yenten  Check-in [9efa7d2d99]

sudo: required
dist: trusty
os: linux
language: minimal
cache:
  directories:
  - depends/built
  - depends/sdk-sources
  - $HOME/.ccache
env:
  global:
    - MAKEJOBS=-j3
    - RUN_TESTS=false
    - CHECK_DOC=0
    - BOOST_TEST_RANDOM=1$TRAVIS_BUILD_ID
    - CCACHE_SIZE=100M
    - CCACHE_TEMPDIR=/tmp/.ccache-temp
    - CCACHE_COMPRESS=1
    - BASE_OUTDIR=$TRAVIS_BUILD_DIR/out
    - SDK_URL=https://bitcoincore.org/depends-sources/sdks
    - PYTHON_DEBUG=1
    - WINEDEBUG=fixme-all
  matrix:
# ARM
    - HOST=arm-linux-gnueabihf PACKAGES="g++-arm-linux-gnueabihf" DEP_OPTS="NO_QT=1" CHECK_DOC=1 GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
# Win32
    - HOST=i686-w64-mingw32 DPKG_ADD_ARCH="i386" DEP_OPTS="NO_QT=1" PACKAGES="python3 nsis g++-mingw-w64-i686 wine1.6 bc" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-reduce-exports"
# 32-bit + dash
    - HOST=i686-pc-linux-gnu PACKAGES="g++-multilib bc python3-zmq" DEP_OPTS="NO_QT=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports LDFLAGS=-static-libstdc++" USE_SHELL="/bin/dash"
# Win64
    - HOST=x86_64-w64-mingw32 DPKG_ADD_ARCH="i386" DEP_OPTS="NO_QT=1" PACKAGES="python3 nsis g++-mingw-w64-x86-64 wine1.6 bc" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-reduce-exports"
# x86_64 Linux (uses qt5 dev package instead of depends Qt to speed up build and avoid timeout)
    - HOST=x86_64-unknown-linux-gnu PACKAGES="python3-zmq qtbase5-dev qttools5-dev-tools protobuf-compiler libdbus-1-dev libharfbuzz-dev" DEP_OPTS="NO_QT=1 NO_UPNP=1 DEBUG=1 ALLOW_HOST_PACKAGES=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --with-gui=qt5 --enable-glibc-back-compat --enable-reduce-exports CPPFLAGS=-DDEBUG_LOCKORDER"
# x86_64 Linux, No wallet
    - HOST=x86_64-unknown-linux-gnu PACKAGES="python3" DEP_OPTS="NO_WALLET=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
# Cross-Mac
    - HOST=x86_64-apple-darwin11 PACKAGES="cmake imagemagick libcap-dev librsvg2-bin libz-dev libbz2-dev libtiff-tools python-dev" BITCOIN_CONFIG="--enable-gui --enable-reduce-exports" OSX_SDK=10.11 GOAL="deploy"

before_install:
    - export PATH=$(echo $PATH | tr ':' "\n" | sed '/\/opt\/python/d' | tr "\n" ":" | sed "s|::|:|g")
install:
    - if [ -n "$DPKG_ADD_ARCH" ]; then sudo dpkg --add-architecture "$DPKG_ADD_ARCH" ; fi
    - if [ -n "$PACKAGES" ]; then travis_retry sudo apt-get update; fi
    - if [ -n "$PACKAGES" ]; then travis_retry sudo apt-get install --no-install-recommends --no-upgrade -qq $PACKAGES; fi
before_script:
    - if [ "$TRAVIS_EVENT_TYPE" = "pull_request" ]; then contrib/devtools/commit-script-check.sh $TRAVIS_COMMIT_RANGE; fi
    - unset CC; unset CXX
    - if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/check-doc.py; fi
    - mkdir -p depends/SDKs depends/sdk-sources
    - if [ -n "$OSX_SDK" -a ! -f depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz ]; then curl --location --fail $SDK_URL/MacOSX${OSX_SDK}.sdk.tar.gz -o depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz; fi
    - if [ -n "$OSX_SDK" -a -f depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz ]; then tar -C depends/SDKs -xf depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz; fi
    - make $MAKEJOBS -C depends HOST=$HOST $DEP_OPTS
script:
    - if [ "$CHECK_DOC" = 1 -a "$TRAVIS_REPO_SLUG" = "bitcoin/bitcoin" -a "$TRAVIS_PULL_REQUEST" = "false" ]; then while read LINE; do travis_retry gpg --keyserver hkp://subset.pool.sks-keyservers.net --recv-keys $LINE; done < contrib/verify-commits/trusted-keys; fi
    - if [ "$CHECK_DOC" = 1 -a "$TRAVIS_REPO_SLUG" = "bitcoin/bitcoin" -a "$TRAVIS_PULL_REQUEST" = "false" ]; then git fetch --unshallow; fi
    - if [ "$CHECK_DOC" = 1 -a "$TRAVIS_REPO_SLUG" = "bitcoin/bitcoin" -a "$TRAVIS_PULL_REQUEST" = "false" ]; then contrib/verify-commits/verify-commits.sh; fi
    - export TRAVIS_COMMIT_LOG=`git log --format=fuller -1`
    - if [ -n "$USE_SHELL" ]; then export CONFIG_SHELL="$USE_SHELL"; fi
    - OUTDIR=$BASE_OUTDIR/$TRAVIS_PULL_REQUEST/$TRAVIS_JOB_NUMBER-$HOST
    - BITCOIN_CONFIG_ALL="--disable-dependency-tracking --prefix=$TRAVIS_BUILD_DIR/depends/$HOST --bindir=$OUTDIR/bin --libdir=$OUTDIR/lib"
    - depends/$HOST/native/bin/ccache --max-size=$CCACHE_SIZE
    - test -n "$USE_SHELL" && eval '"$USE_SHELL" -c "./autogen.sh"' || ./autogen.sh
    - mkdir build && cd build
    - ../configure --cache-file=config.cache $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG || ( cat config.log && false)
    - make distdir VERSION=$HOST
    - cd yenten-$HOST
    - ./configure --cache-file=../config.cache $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG || ( cat config.log && false)
    - make $MAKEJOBS $GOAL || ( echo "Build failure. Verbose build follows." && make $GOAL V=1 ; false )
    - export LD_LIBRARY_PATH=$TRAVIS_BUILD_DIR/depends/$HOST/lib
    - export RUN_TESTS=false # TODO: remove this line if broken tests are fixed
    - if [ "$RUN_TESTS" = "true" ]; then travis_wait 30 make $MAKEJOBS check VERBOSE=1; fi
    - if [ "$TRAVIS_EVENT_TYPE" = "cron" ]; then extended="--extended --exclude pruning,dbcrash"; fi
    - if [ "$RUN_TESTS" = "true" ]; then test/functional/test_runner.py --coverage --quiet ${extended}; fi
after_success:
    - AUTHOR=`git log -1 | grep 'Author:' | awk '{$1="";$NF="";print $0}' | sed -e 's/^[ ]*//g'`
    - test -n $DISCORD_WEBHOOK_URL && echo '{"embeds":[{"title":"['$TRAVIS_JOB_NUMBER':'$HOST'] Build '$TRAVIS_BUILD_NUMBER' succeeded","type":"rich","description":"[`'${TRAVIS_COMMIT:0:7}'`](https://github.com/'$TRAVIS_REPO_SLUG'/commit/'$TRAVIS_COMMIT') '$TRAVIS_COMMIT_MESSAGE' - '$AUTHOR'","url":"https://travis-ci.org/'$TRAVIS_REPO_SLUG'/builds/'$TRAVIS_BUILD_ID'","timestamp":"'`date --utc +%FT%TZ`'","color":2932302,"footer":{"text":"Travis CI"}}]}' | curl -A 'Travis CI' -H 'Content-Type:application/json' -d @- $DISCORD_WEBHOOK_URL
after_failure:
    - AUTHOR=`git log -1 | grep 'Author:' | awk '{$1="";$NF="";print $0}' | sed -e 's/^[ ]*//g'`
    - test -n $DISCORD_WEBHOOK_URL && echo '{"embeds":[{"title":"['$TRAVIS_JOB_NUMBER':'$HOST'] Build '$TRAVIS_BUILD_NUMBER' failed","type":"rich","description":"[`'${TRAVIS_COMMIT:0:7}'`](https://github.com/'$TRAVIS_REPO_SLUG'/commit/'$TRAVIS_COMMIT') '$TRAVIS_COMMIT_MESSAGE' - '$AUTHOR'","url":"https://travis-ci.org/'$TRAVIS_REPO_SLUG'/builds/'$TRAVIS_BUILD_ID'","timestamp":"'`date --utc +%FT%TZ`'","color":13313073,"footer":{"text":"Travis CI"}}]}' | curl -A 'Travis CI' -H 'Content-Type:application/json' -d @- $DISCORD_WEBHOOK_URL
after_script:
    - echo $TRAVIS_COMMIT_RANGE
    - echo $TRAVIS_COMMIT_LOG

[main]
host = https://www.transifex.com

[bitcoin.tx]
file_filter = src/qt/locale/bitcoin_<lang>.ts
source_file = src/qt/locale/bitcoin_en.ts
source_lang = en

Contributing to Bitcoin Core
============================

The Bitcoin Core project operates an open contributor model where anyone is
welcome to contribute towards development in the form of peer review, testing
and patches. This document explains the practical process and guidelines for
contributing.

Firstly in terms of structure, there is no particular concept of "Core
developers" in the sense of privileged people. Open source often naturally
revolves around meritocracy where longer term contributors gain more trust from
the developer community. However, some hierarchy is necessary for practical
purposes. As such there are repository "maintainers" who are responsible for
merging pull requests as well as a "lead maintainer" who is responsible for the
release cycle, overall merging, moderation and appointment of maintainers.


Contributor Workflow
--------------------

The codebase is maintained using the "contributor workflow" where everyone
without exception contributes patch proposals using "pull requests". This
facilitates social contribution, easy testing and peer review.

To contribute a patch, the workflow is as follows:

  - Fork repository
  - Create topic branch
  - Commit patches

The project coding conventions in the [developer notes](doc/developer-notes.md)
must be adhered to.

In general [commits should be atomic](https://en.wikipedia.org/wiki/Atomic_commit#Atomic_commit_convention)
and diffs should be easy to read. For this reason do not mix any formatting
fixes or code moves with actual code changes.

Commit messages should be verbose by default consisting of a short subject line
(50 chars max), a blank line and detailed explanatory text as separate
paragraph(s), unless the title alone is self-explanatory (like "Corrected typo
in init.cpp") in which case a single title line is sufficient. Commit messages should be
helpful to people reading your code in the future, so explain the reasoning for
your decisions. Further explanation [here](http://chris.beams.io/posts/git-commit/).

If a particular commit references another issue, please add the reference, for
example `refs #1234`, or `fixes #4321`. Using the `fixes` or `closes` keywords
will cause the corresponding issue to be closed when the pull request is merged.

Please refer to the [Git manual](https://git-scm.com/doc) for more information
about Git.

  - Push changes to your fork
  - Create pull request

The title of the pull request should be prefixed by the component or area that
the pull request affects. Valid areas as:

  - *Consensus* for changes to consensus critical code
  - *Docs* for changes to the documentation
  - *Qt* for changes to bitcoin-qt
  - *Mining* for changes to the mining code
  - *Net* or *P2P* for changes to the peer-to-peer network code
  - *RPC/REST/ZMQ* for changes to the RPC, REST or ZMQ APIs
  - *Scripts and tools* for changes to the scripts and tools
  - *Tests* for changes to the bitcoin unit tests or QA tests
  - *Trivial* should **only** be used for PRs that do not change generated
    executable code. Notably, refactors (change of function arguments and code
    reorganization) and changes in behavior should **not** be marked as trivial.
    Examples of trivial PRs are changes to:
    - comments
    - whitespace
    - variable names
    - logging and messages
  - *Utils and libraries* for changes to the utils and libraries
  - *Wallet* for changes to the wallet code

Examples:

    Consensus: Add new opcode for BIP-XXXX OP_CHECKAWESOMESIG
    Net: Automatically create hidden service, listen on Tor
    Qt: Add feed bump button
    Trivial: Fix typo in init.cpp

If a pull request is specifically not to be considered for merging (yet) please
prefix the title with [WIP] or use [Tasks Lists](https://help.github.com/articles/basic-writing-and-formatting-syntax/#task-lists)
in the body of the pull request to indicate tasks are pending.

The body of the pull request should contain enough description about what the
patch does together with any justification/reasoning. You should include
references to any discussions (for example other tickets or mailing list
discussions).

At this stage one should expect comments and review from other contributors. You
can add more commits to your pull request by committing them locally and pushing
to your fork until you have satisfied all feedback.

Squashing Commits
---------------------------
If your pull request is accepted for merging, you may be asked by a maintainer
to squash and or [rebase](https://git-scm.com/docs/git-rebase) your commits
before it will be merged. The basic squashing workflow is shown below.

    git checkout your_branch_name
    git rebase -i HEAD~n
    # n is normally the number of commits in the pull
    # set commits from 'pick' to 'squash', save and quit
    # on the next screen, edit/refine commit messages
    # save and quit
    git push -f # (force push to GitHub)

If you have problems with squashing (or other workflows with `git`), you can
alternatively enable "Allow edits from maintainers" in the right GitHub
sidebar and ask for help in the pull request.

Please refrain from creating several pull requests for the same change.
Use the pull request that is already open (or was created earlier) to amend
changes. This preserves the discussion and review that happened earlier for
the respective change set.

The length of time required for peer review is unpredictable and will vary from
pull request to pull request.


Pull Request Philosophy
-----------------------

Patchsets should always be focused. For example, a pull request could add a
feature, fix a bug, or refactor code; but not a mixture. Please also avoid super
pull requests which attempt to do too much, are overly large, or overly complex
as this makes review difficult.


### Features

When adding a new feature, thought must be given to the long term technical debt
and maintenance that feature may require after inclusion. Before proposing a new
feature that will require maintenance, please consider if you are willing to
maintain it (including bug fixing). If features get orphaned with no maintainer
in the future, they may be removed by the Repository Maintainer.


### Refactoring

Refactoring is a necessary part of any software project's evolution. The
following guidelines cover refactoring pull requests for the project.

There are three categories of refactoring, code only moves, code style fixes,
code refactoring. In general refactoring pull requests should not mix these
three kinds of activity in order to make refactoring pull requests easy to
review and uncontroversial. In all cases, refactoring PRs must not change the
behaviour of code within the pull request (bugs must be preserved as is).

Project maintainers aim for a quick turnaround on refactoring pull requests, so
where possible keep them short, uncomplex and easy to verify.


"Decision Making" Process
-------------------------

The following applies to code changes to the Bitcoin Core project (and related
projects such as libsecp256k1), and is not to be confused with overall Bitcoin
Network Protocol consensus changes.

Whether a pull request is merged into Bitcoin Core rests with the project merge
maintainers and ultimately the project lead.

Maintainers will take into consideration if a patch is in line with the general
principles of the project; meets the minimum standards for inclusion; and will
judge the general consensus of contributors.

In general, all pull requests must:

  - Have a clear use case, fix a demonstrable bug or serve the greater good of
    the project (for example refactoring for modularisation);
  - Be well peer reviewed;
  - Have unit tests and functional tests where appropriate;
  - Follow code style guidelines;
  - Not break the existing test suite;
  - Where bugs are fixed, where possible, there should be unit tests
    demonstrating the bug and also proving the fix. This helps prevent regression.

Patches that change Bitcoin consensus rules are considerably more involved than
normal because they affect the entire ecosystem and so must be preceded by
extensive mailing list discussions and have a numbered BIP. While each case will
be different, one should be prepared to expend more time and effort than for
other kinds of patches because of increased peer review and consensus building
requirements.


### Peer Review

Anyone may participate in peer review which is expressed by comments in the pull
request. Typically reviewers will review the code for obvious errors, as well as
test out the patch set and opine on the technical merits of the patch. Project
maintainers take into account the peer review when determining if there is
consensus to merge a pull request (remember that discussions may have been
spread out over GitHub, mailing list and IRC discussions). The following
language is used within pull-request comments:

  - ACK means "I have tested the code and I agree it should be merged";
  - NACK means "I disagree this should be merged", and must be accompanied by
    sound technical justification (or in certain cases of copyright/patent/licensing
    issues, legal justification). NACKs without accompanying reasoning may be
    disregarded;
  - utACK means "I have not tested the code, but I have reviewed it and it looks
    OK, I agree it can be merged";
  - Concept ACK means "I agree in the general principle of this pull request";
  - Nit refers to trivial, often non-blocking issues.

Reviewers should include the commit hash which they reviewed in their comments.

Project maintainers reserve the right to weigh the opinions of peer reviewers
using common sense judgement and also may weight based on meritocracy: Those
that have demonstrated a deeper commitment and understanding towards the project
(over time) or have clear domain expertise may naturally have more weight, as
one would expect in all walks of life.

Where a patch set affects consensus critical code, the bar will be set much
higher in terms of discussion and peer review requirements, keeping in mind that
mistakes could be very costly to the wider community. This includes refactoring
of consensus critical code.

Where a patch set proposes to change the Bitcoin consensus, it must have been
discussed extensively on the mailing list and IRC, be accompanied by a widely
discussed BIP and have a generally widely perceived technical consensus of being
a worthwhile change based on the judgement of the maintainers.

### Finding Reviewers

As most reviewers are themselves developers with their own projects, the review
process can be quite lengthy, and some amount of patience is required. If you find
that you've been waiting for a pull request to be given attention for several
months, there may be a number of reasons for this, some of which you can do something
about:

  - It may be because of a feature freeze due to an upcoming release. During this time,
    only bug fixes are taken into consideration. If your pull request is a new feature,
    it will not be prioritized until the release is over. Wait for release.
  - It may be because the changes you are suggesting do not appeal to people. Rather than
    nits and critique, which require effort and means they care enough to spend time on your
    contribution, thundering silence is a good sign of widespread (mild) dislike of a given change
    (because people don't assume *others* won't actually like the proposal). Don't take
    that personally, though! Instead, take another critical look at what you are suggesting
    and see if it: changes too much, is too broad, doesn't adhere to the
    [developer notes](doc/developer-notes.md), is dangerous or insecure, is messily written, etc.
    Identify and address any of the issues you find. Then ask e.g. on IRC if someone could give
    their opinion on the concept itself.
  - It may be because your code is too complex for all but a few people. And those people
    may not have realized your pull request even exists. A great way to find people who
    are qualified and care about the code you are touching is the
    [Git Blame feature](https://help.github.com/articles/tracing-changes-in-a-file/). Simply
    find the person touching the code you are touching before you and see if you can find
    them and give them a nudge. Don't be incessant about the nudging though.
  - Finally, if all else fails, ask on IRC or elsewhere for someone to give your pull request
    a look. If you think you've been waiting an unreasonably long amount of time (month+) for
    no particular reason (few lines changed, etc), this is totally fine. Try to return the favor
    when someone else is asking for feedback on their code, and universe balances out.


Release Policy
--------------

The project leader is the release manager for each Bitcoin Core release.

Copyright
---------

By contributing to this repository, you agree to license your work under the 
MIT license unless specified otherwise in `contrib/debian/copyright` or at 
the top of the file itself. Any work contributed where you are not the original 
author must contain its license header with the original author(s) and source.

The MIT License (MIT)

Copyright (c) 2009-2017 The Bitcoin Core developers
Copyright (c) 2009-2017 Bitcoin Developers

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

Building Yenten
================

See doc/build-*.md for instructions on building the various
elements of the Yenten Core reference implementation of Yenten.

# Copyright (c) 2013-2016 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.

ACLOCAL_AMFLAGS = -I build-aux/m4
SUBDIRS = src
if ENABLE_MAN
SUBDIRS += doc/man
endif
.PHONY: deploy FORCE

GZIP_ENV="-9n"
export PYTHONPATH

if BUILD_BITCOIN_LIBS
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = libbitcoinconsensus.pc
endif

BITCOIND_BIN=$(top_builddir)/src/$(BITCOIN_DAEMON_NAME)$(EXEEXT)
BITCOIN_QT_BIN=$(top_builddir)/src/qt/$(BITCOIN_GUI_NAME)$(EXEEXT)
BITCOIN_CLI_BIN=$(top_builddir)/src/$(BITCOIN_CLI_NAME)$(EXEEXT)
BITCOIN_WIN_INSTALLER=$(PACKAGE)-$(PACKAGE_VERSION)-win$(WINDOWS_BITS)-setup$(EXEEXT)

empty :=
space := $(empty) $(empty)

OSX_APP=Yenten-Qt.app
OSX_VOLNAME = $(subst $(space),-,$(PACKAGE_NAME))
OSX_DMG = $(OSX_VOLNAME).dmg
OSX_BACKGROUND_SVG=background.svg
OSX_BACKGROUND_IMAGE=background.tiff
OSX_BACKGROUND_IMAGE_DPIS=36 72
OSX_DSSTORE_GEN=$(top_srcdir)/contrib/macdeploy/custom_dsstore.py
OSX_DEPLOY_SCRIPT=$(top_srcdir)/contrib/macdeploy/macdeployqtplus
OSX_FANCY_PLIST=$(top_srcdir)/contrib/macdeploy/fancy.plist
OSX_INSTALLER_ICONS=$(top_srcdir)/src/qt/res/icons/bitcoin.icns
OSX_PLIST=$(top_builddir)/share/qt/Info.plist #not installed
OSX_QT_TRANSLATIONS = da,de,es,hu,ru,uk,zh_CN,zh_TW

DIST_DOCS = $(wildcard doc/*.md) $(wildcard doc/release-notes/*.md)
DIST_CONTRIB = $(top_srcdir)/contrib/yenten-cli.bash-completion \
	       $(top_srcdir)/contrib/yenten-tx.bash-completion \
	       $(top_srcdir)/contrib/yentend.bash-completion \
	       $(top_srcdir)/contrib/init \
	       $(top_srcdir)/contrib/rpm
DIST_SHARE = \
  $(top_srcdir)/share/genbuild.sh \
  $(top_srcdir)/share/rpcuser

BIN_CHECKS=$(top_srcdir)/contrib/devtools/symbol-check.py \
           $(top_srcdir)/contrib/devtools/security-check.py

WINDOWS_PACKAGING = $(top_srcdir)/share/pixmaps/bitcoin.ico \
  $(top_srcdir)/share/pixmaps/nsis-header.bmp \
  $(top_srcdir)/share/pixmaps/nsis-wizard.bmp \
  $(top_srcdir)/doc/README_windows.txt

OSX_PACKAGING = $(OSX_DEPLOY_SCRIPT) $(OSX_FANCY_PLIST) $(OSX_INSTALLER_ICONS) \
  $(top_srcdir)/contrib/macdeploy/$(OSX_BACKGROUND_SVG) \
  $(OSX_DSSTORE_GEN) \
  $(top_srcdir)/contrib/macdeploy/detached-sig-apply.sh \
  $(top_srcdir)/contrib/macdeploy/detached-sig-create.sh

COVERAGE_INFO = baseline.info \
  test_bitcoin_filtered.info total_coverage.info \
  baseline_filtered.info functional_test.info functional_test_filtered.info \
  test_bitcoin_coverage.info test_bitcoin.info

dist-hook:
	-$(GIT) archive --format=tar HEAD -- src/clientversion.cpp | $(AMTAR) -C $(top_distdir) -xf -

$(BITCOIN_WIN_INSTALLER): all-recursive
	$(MKDIR_P) $(top_builddir)/release
	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIND_BIN) $(top_builddir)/release
	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIN_QT_BIN) $(top_builddir)/release
	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIN_CLI_BIN) $(top_builddir)/release
	@test -f $(MAKENSIS) && $(MAKENSIS) -V2 $(top_builddir)/share/setup.nsi || \
	  echo error: could not build $@
	@echo built $@

$(OSX_APP)/Contents/PkgInfo:
	$(MKDIR_P) $(@D)
	@echo "APPL????" > $@

$(OSX_APP)/Contents/Resources/empty.lproj:
	$(MKDIR_P) $(@D)
	@touch $@

$(OSX_APP)/Contents/Info.plist: $(OSX_PLIST)
	$(MKDIR_P) $(@D)
	$(INSTALL_DATA) $< $@

$(OSX_APP)/Contents/Resources/bitcoin.icns: $(OSX_INSTALLER_ICONS)
	$(MKDIR_P) $(@D)
	$(INSTALL_DATA) $< $@

$(OSX_APP)/Contents/MacOS/Yenten-Qt: $(BITCOIN_QT_BIN)
	$(MKDIR_P) $(@D)
	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM)  $< $@

$(OSX_APP)/Contents/Resources/Base.lproj/InfoPlist.strings:
	$(MKDIR_P) $(@D)
	echo '{	CFBundleDisplayName = "$(PACKAGE_NAME)"; CFBundleName = "$(PACKAGE_NAME)"; }' > $@

OSX_APP_BUILT=$(OSX_APP)/Contents/PkgInfo $(OSX_APP)/Contents/Resources/empty.lproj \
  $(OSX_APP)/Contents/Resources/bitcoin.icns $(OSX_APP)/Contents/Info.plist \
  $(OSX_APP)/Contents/MacOS/Yenten-Qt $(OSX_APP)/Contents/Resources/Base.lproj/InfoPlist.strings

osx_volname:
	echo $(OSX_VOLNAME) >$@

if BUILD_DARWIN
$(OSX_DMG): $(OSX_APP_BUILT) $(OSX_PACKAGING) $(OSX_BACKGROUND_IMAGE)
	$(PYTHON) $(OSX_DEPLOY_SCRIPT) $(OSX_APP) -add-qt-tr $(OSX_QT_TRANSLATIONS) -translations-dir=$(QT_TRANSLATION_DIR) -dmg -fancy $(OSX_FANCY_PLIST) -verbose 2 -volname $(OSX_VOLNAME)

$(OSX_BACKGROUND_IMAGE).png: contrib/macdeploy/$(OSX_BACKGROUND_SVG)
	sed 's/PACKAGE_NAME/$(PACKAGE_NAME)/' < "$<" | $(RSVG_CONVERT) -f png -d 36 -p 36 -o $@
$(OSX_BACKGROUND_IMAGE)@2x.png: contrib/macdeploy/$(OSX_BACKGROUND_SVG)
	sed 's/PACKAGE_NAME/$(PACKAGE_NAME)/' < "$<" | $(RSVG_CONVERT) -f png -d 72 -p 72 -o $@
$(OSX_BACKGROUND_IMAGE): $(OSX_BACKGROUND_IMAGE).png $(OSX_BACKGROUND_IMAGE)@2x.png
	tiffutil -cathidpicheck $^ -out $@

deploydir: $(OSX_DMG)
else
APP_DIST_DIR=$(top_builddir)/dist
APP_DIST_EXTRAS=$(APP_DIST_DIR)/.background/$(OSX_BACKGROUND_IMAGE) $(APP_DIST_DIR)/.DS_Store $(APP_DIST_DIR)/Applications

$(APP_DIST_DIR)/Applications:
	@rm -f $@
	@cd $(@D); $(LN_S) /Applications $(@F)

$(APP_DIST_EXTRAS): $(APP_DIST_DIR)/$(OSX_APP)/Contents/MacOS/Yenten-Qt

$(OSX_DMG): $(APP_DIST_EXTRAS)
	$(GENISOIMAGE) -no-cache-inodes -D -l -probe -V "$(OSX_VOLNAME)" -no-pad -r -dir-mode 0755 -apple -o $@ dist

dpi%.$(OSX_BACKGROUND_IMAGE): contrib/macdeploy/$(OSX_BACKGROUND_SVG)
	sed 's/PACKAGE_NAME/$(PACKAGE_NAME)/' < "$<" | $(RSVG_CONVERT) -f png -d $* -p $* | $(IMAGEMAGICK_CONVERT) - $@
OSX_BACKGROUND_IMAGE_DPIFILES := $(foreach dpi,$(OSX_BACKGROUND_IMAGE_DPIS),dpi$(dpi).$(OSX_BACKGROUND_IMAGE))
$(APP_DIST_DIR)/.background/$(OSX_BACKGROUND_IMAGE): $(OSX_BACKGROUND_IMAGE_DPIFILES)
	$(MKDIR_P) $(@D)
	$(TIFFCP) -c none $(OSX_BACKGROUND_IMAGE_DPIFILES) $@

$(APP_DIST_DIR)/.DS_Store: $(OSX_DSSTORE_GEN)
	$(PYTHON) $< "$@" "$(OSX_VOLNAME)"

$(APP_DIST_DIR)/$(OSX_APP)/Contents/MacOS/Yenten-Qt: $(OSX_APP_BUILT) $(OSX_PACKAGING)
	INSTALLNAMETOOL=$(INSTALLNAMETOOL)  OTOOL=$(OTOOL) STRIP=$(STRIP) $(PYTHON) $(OSX_DEPLOY_SCRIPT) $(OSX_APP) -translations-dir=$(QT_TRANSLATION_DIR) -add-qt-tr $(OSX_QT_TRANSLATIONS) -verbose 2

deploydir: $(APP_DIST_EXTRAS)
endif

if TARGET_DARWIN
appbundle: $(OSX_APP_BUILT)
deploy: $(OSX_DMG)
endif
if TARGET_WINDOWS
deploy: $(BITCOIN_WIN_INSTALLER)
endif

$(BITCOIN_QT_BIN): FORCE
	$(MAKE) -C src qt/$(@F)

$(BITCOIND_BIN): FORCE
	$(MAKE) -C src $(@F)

$(BITCOIN_CLI_BIN): FORCE
	$(MAKE) -C src $(@F)

if USE_LCOV
LCOV_FILTER_PATTERN=-p "/usr/include/" -p "src/leveldb/" -p "src/bench/" -p "src/univalue" -p "src/crypto/ctaes" -p "src/secp256k1"

baseline.info:
	$(LCOV) -c -i -d $(abs_builddir)/src -o $@

baseline_filtered.info: baseline.info
	$(abs_builddir)/contrib/filter-lcov.py $(LCOV_FILTER_PATTERN) $< $@
	$(LCOV) -a $@ $(LCOV_OPTS) -o $@

test_bitcoin.info: baseline_filtered.info
	$(MAKE) -C src/ check
	$(LCOV) -c $(LCOV_OPTS) -d $(abs_builddir)/src -t test_bitcoin -o $@
	$(LCOV) -z $(LCOV_OPTS) -d $(abs_builddir)/src

test_bitcoin_filtered.info: test_bitcoin.info
	$(abs_builddir)/contrib/filter-lcov.py $(LCOV_FILTER_PATTERN) $< $@
	$(LCOV) -a $@ $(LCOV_OPTS) -o $@

functional_test.info: test_bitcoin_filtered.info
	-@TIMEOUT=15 test/functional/test_runner.py $(EXTENDED_FUNCTIONAL_TESTS)
	$(LCOV) -c $(LCOV_OPTS) -d $(abs_builddir)/src --t functional-tests -o $@
	$(LCOV) -z $(LCOV_OPTS) -d $(abs_builddir)/src

functional_test_filtered.info: functional_test.info
	$(abs_builddir)/contrib/filter-lcov.py $(LCOV_FILTER_PATTERN) $< $@
	$(LCOV) -a $@ $(LCOV_OPTS) -o $@

test_bitcoin_coverage.info: baseline_filtered.info test_bitcoin_filtered.info
	$(LCOV) -a $(LCOV_OPTS) baseline_filtered.info -a test_bitcoin_filtered.info -o $@

total_coverage.info: test_bitcoin_filtered.info functional_test_filtered.info
	$(LCOV) -a $(LCOV_OPTS) baseline_filtered.info -a test_bitcoin_filtered.info -a functional_test_filtered.info -o $@ | $(GREP) "\%" | $(AWK) '{ print substr($$3,2,50) "/" $$5 }' > coverage_percent.txt

test_bitcoin.coverage/.dirstamp:  test_bitcoin_coverage.info
	$(GENHTML) -s $(LCOV_OPTS) $< -o $(@D)
	@touch $@

total.coverage/.dirstamp: total_coverage.info
	$(GENHTML) -s $(LCOV_OPTS) $< -o $(@D)
	@touch $@

cov: test_bitcoin.coverage/.dirstamp total.coverage/.dirstamp

endif

dist_noinst_SCRIPTS = autogen.sh

EXTRA_DIST = $(DIST_SHARE) test/functional/test_runner.py test/functional $(DIST_CONTRIB) $(DIST_DOCS) $(WINDOWS_PACKAGING) $(OSX_PACKAGING) $(BIN_CHECKS)

EXTRA_DIST += \
    test/util/bitcoin-util-test.py \
    test/util/data/bitcoin-util-test.json \
    test/util/data/blanktxv1.hex \
    test/util/data/blanktxv1.json \
    test/util/data/blanktxv2.hex \
    test/util/data/blanktxv2.json \
    test/util/data/tt-delin1-out.hex \
    test/util/data/tt-delin1-out.json \
    test/util/data/tt-delout1-out.hex \
    test/util/data/tt-delout1-out.json \
    test/util/data/tt-locktime317000-out.hex \
    test/util/data/tt-locktime317000-out.json \
    test/util/data/tx394b54bb.hex \
    test/util/data/txcreate1.hex \
    test/util/data/txcreate1.json \
    test/util/data/txcreate2.hex \
    test/util/data/txcreate2.json \
    test/util/data/txcreatedata1.hex \
    test/util/data/txcreatedata1.json \
    test/util/data/txcreatedata2.hex \
    test/util/data/txcreatedata2.json \
    test/util/data/txcreatedata_seq0.hex \
    test/util/data/txcreatedata_seq0.json \
    test/util/data/txcreatedata_seq1.hex \
    test/util/data/txcreatedata_seq1.json \
    test/util/data/txcreatemultisig1.hex \
    test/util/data/txcreatemultisig1.json \
    test/util/data/txcreatemultisig2.hex \
    test/util/data/txcreatemultisig2.json \
    test/util/data/txcreatemultisig3.hex \
    test/util/data/txcreatemultisig3.json \
    test/util/data/txcreatemultisig4.hex \
    test/util/data/txcreatemultisig4.json \
    test/util/data/txcreatemultisig5.json \
    test/util/data/txcreateoutpubkey1.hex \
    test/util/data/txcreateoutpubkey1.json \
    test/util/data/txcreateoutpubkey2.hex \
    test/util/data/txcreateoutpubkey2.json \
    test/util/data/txcreateoutpubkey3.hex \
    test/util/data/txcreateoutpubkey3.json \
    test/util/data/txcreatescript1.hex \
    test/util/data/txcreatescript1.json \
    test/util/data/txcreatescript2.hex \
    test/util/data/txcreatescript2.json \
    test/util/data/txcreatescript3.hex \
    test/util/data/txcreatescript3.json \
    test/util/data/txcreatescript4.hex \
    test/util/data/txcreatescript4.json \
    test/util/data/txcreatesignv1.hex \
    test/util/data/txcreatesignv1.json \
    test/util/data/txcreatesignv2.hex

CLEANFILES = $(OSX_DMG) $(BITCOIN_WIN_INSTALLER)

.INTERMEDIATE: $(COVERAGE_INFO)

DISTCHECK_CONFIGURE_FLAGS = --enable-man

clean-local:
	rm -rf coverage_percent.txt test_bitcoin.coverage/ total.coverage/ test/tmp/ cache/ $(OSX_APP)
	rm -rf test/functional/__pycache__

Yenten Core integration/staging tree
=====================================

original site
----------------
http://conan-equal-newone.github.io/yenten/

Developer GitHub
----------------
https://github.com/conan-equal-newone/

Discussion forum
----------------
https://bitcointalk.org/

What is Yenten?
----------------

Yenten is an experimental digital currency that enables instant payments to
anyone, anywhere in the world. Yenten uses peer-to-peer technology to operate
with no central authority: managing transactions and issuing money are carried
out collectively by the network. Yenten Core is the name of open source
software which enables the use of this currency.

For more information, as well as an immediately useable, binary version of
the Yenten Core software, see https://github.com/conan-equal-newone/yenten/releases.

License
-------

Yenten Core is released under the terms of the MIT license. See [COPYING](COPYING) for more
information or see https://opensource.org/licenses/MIT.

Development Process
-------------------

The `master` branch is regularly built and tested, but is not guaranteed to be
completely stable. [Tags](https://github.com/conan-equal-newone/yenten/tags) are created
regularly to indicate new official, stable release versions of Yenten Core.

The contribution workflow is described in [CONTRIBUTING.md](CONTRIBUTING.md).

The developer [Discussion forum](https://bitcointalk.org/)
should be used to discuss complicated or controversial changes before working
on a patch set.

Testing
-------

Testing and code review is the bottleneck for development; we get more pull
requests than we can review and test on short notice. Please be patient and help out by testing
other people's pull requests, and remember this is a security-critical project where any mistake might cost people
lots of money.

### Automated Testing

Developers are strongly encouraged to write [unit tests](src/test/README.md) for new code, and to
submit new unit tests for old code. Unit tests can be compiled and run
(assuming they weren't disabled in configure) with: `make check`. Further details on running
and extending unit tests can be found in [/src/test/README.md](/src/test/README.md).

There are also [regression and integration tests](/test), written
in Python, that are run automatically on the build server.
These tests can be run (if the [test dependencies](/test) are installed) with: `test/functional/test_runner.py`

The Travis CI system makes sure that every pull request is built for Windows, Linux, and OS X, and that unit/sanity tests are run automatically.

### Manual Quality Assurance (QA) Testing

Changes should be tested by somebody other than the developer who wrote the
code. This is especially important for large or high-risk changes. It is useful
to add a test plan to the pull request description if testing the changes is
not straightforward.

Translations
------------

Changes to translations as well as new translations can be submitted to
[Bitcoin Core's Transifex page](https://www.transifex.com/projects/p/bitcoin/).

Translations are periodically pulled from Transifex and merged into the git repository. See the
[translation process](doc/translation_process.md) for details on how this works.

**Important**: We do not accept translation changes as GitHub pull requests because the next
pull from Transifex would automatically overwrite them again.

#!/bin/sh
# Copyright (c) 2013-2016 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.

set -e
srcdir="$(dirname $0)"
cd "$srcdir"
if [ -z ${LIBTOOLIZE} ] && GLIBTOOLIZE="`which glibtoolize 2>/dev/null`"; then
  LIBTOOLIZE="${GLIBTOOLIZE}"
  export LIBTOOLIZE
fi
which autoreconf >/dev/null || \
  (echo "configuration failed, please install autoconf first" && exit 1)
autoreconf --install --force --warnings=all

# ===========================================================================
#       http://www.gnu.org/software/autoconf-archive/ax_boost_base.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_BOOST_BASE([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
#
# DESCRIPTION
#
#   Test for the Boost C++ libraries of a particular version (or newer)
#
#   If no path to the installed boost library is given the macro searchs
#   under /usr, /usr/local, /opt and /opt/local and evaluates the
#   $BOOST_ROOT environment variable. Further documentation is available at
#   <http://randspringer.de/boost/index.html>.
#
#   This macro calls:
#
#     AC_SUBST(BOOST_CPPFLAGS) / AC_SUBST(BOOST_LDFLAGS)
#
#   And sets:
#
#     HAVE_BOOST
#
# LICENSE
#
#   Copyright (c) 2008 Thomas Porschberg <thomas@randspringer.de>
#   Copyright (c) 2009 Peter Adolphs
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 27

AC_DEFUN([AX_BOOST_BASE],
[
AC_ARG_WITH([boost],
  [AS_HELP_STRING([--with-boost@<:@=ARG@:>@],
    [use Boost library from a standard location (ARG=yes),
     from the specified location (ARG=<path>),
     or disable it (ARG=no)
     @<:@ARG=yes@:>@ ])],
    [
    if test "$withval" = "no"; then
        want_boost="no"
    elif test "$withval" = "yes"; then
        want_boost="yes"
        ac_boost_path=""
    else
        want_boost="yes"
        ac_boost_path="$withval"
    fi
    ],
    [want_boost="yes"])


AC_ARG_WITH([boost-libdir],
        AS_HELP_STRING([--with-boost-libdir=LIB_DIR],
        [Force given directory for boost libraries. Note that this will override library path detection, so use this parameter only if default library detection fails and you know exactly where your boost libraries are located.]),
        [
        if test -d "$withval"
        then
                ac_boost_lib_path="$withval"
        else
                AC_MSG_ERROR(--with-boost-libdir expected directory name)
        fi
        ],
        [ac_boost_lib_path=""]
)

if test "x$want_boost" = "xyes"; then
    boost_lib_version_req=ifelse([$1], ,1.20.0,$1)
    boost_lib_version_req_shorten=`expr $boost_lib_version_req : '\([[0-9]]*\.[[0-9]]*\)'`
    boost_lib_version_req_major=`expr $boost_lib_version_req : '\([[0-9]]*\)'`
    boost_lib_version_req_minor=`expr $boost_lib_version_req : '[[0-9]]*\.\([[0-9]]*\)'`
    boost_lib_version_req_sub_minor=`expr $boost_lib_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
    if test "x$boost_lib_version_req_sub_minor" = "x" ; then
        boost_lib_version_req_sub_minor="0"
        fi
    WANT_BOOST_VERSION=`expr $boost_lib_version_req_major \* 100000 \+  $boost_lib_version_req_minor \* 100 \+ $boost_lib_version_req_sub_minor`
    AC_MSG_CHECKING(for boostlib >= $boost_lib_version_req)
    succeeded=no

    dnl On 64-bit systems check for system libraries in both lib64 and lib.
    dnl The former is specified by FHS, but e.g. Debian does not adhere to
    dnl this (as it rises problems for generic multi-arch support).
    dnl The last entry in the list is chosen by default when no libraries
    dnl are found, e.g. when only header-only libraries are installed!
    libsubdirs="lib"
    ax_arch=`uname -m`
    case $ax_arch in
      x86_64)
        libsubdirs="lib64 libx32 lib lib64"
        ;;
      ppc64|s390x|sparc64|aarch64|ppc64le)
        libsubdirs="lib64 lib lib64"
        ;;
    esac

    dnl allow for real multi-arch paths e.g. /usr/lib/x86_64-linux-gnu. Give
    dnl them priority over the other paths since, if libs are found there, they
    dnl are almost assuredly the ones desired.
    AC_REQUIRE([AC_CANONICAL_HOST])
    libsubdirs="lib/${host_cpu}-${host_os} $libsubdirs"

    case ${host_cpu} in
      i?86)
        libsubdirs="lib/i386-${host_os} $libsubdirs"
        ;;
    esac

    dnl some arches may advertise a cpu type that doesn't line up with their
    dnl prefix's cpu type. For example, uname may report armv7l while libs are
    dnl installed to /usr/lib/arm-linux-gnueabihf. Try getting the compiler's
    dnl value for an extra chance of finding the correct path.
    libsubdirs="lib/`$CXX -dumpmachine 2>/dev/null` $libsubdirs"

    dnl first we check the system location for boost libraries
    dnl this location ist chosen if boost libraries are installed with the --layout=system option
    dnl or if you install boost with RPM
    if test "$ac_boost_path" != ""; then
        BOOST_CPPFLAGS="-I$ac_boost_path/include"
        for ac_boost_path_tmp in $libsubdirs; do
                if test -d "$ac_boost_path"/"$ac_boost_path_tmp" ; then
                        BOOST_LDFLAGS="-L$ac_boost_path/$ac_boost_path_tmp"
                        break
                fi
        done
    elif test "$cross_compiling" != yes; then
        for ac_boost_path_tmp in /usr /usr/local /opt /opt/local ; do
            if test -d "$ac_boost_path_tmp/include/boost" && test -r "$ac_boost_path_tmp/include/boost"; then
                for libsubdir in $libsubdirs ; do
                    if ls "$ac_boost_path_tmp/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
                done
                BOOST_LDFLAGS="-L$ac_boost_path_tmp/$libsubdir"
                BOOST_CPPFLAGS="-I$ac_boost_path_tmp/include"
                break;
            fi
        done
    fi

    dnl overwrite ld flags if we have required special directory with
    dnl --with-boost-libdir parameter
    if test "$ac_boost_lib_path" != ""; then
       BOOST_LDFLAGS="-L$ac_boost_lib_path"
    fi

    CPPFLAGS_SAVED="$CPPFLAGS"
    CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
    export CPPFLAGS

    LDFLAGS_SAVED="$LDFLAGS"
    LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
    export LDFLAGS

    AC_REQUIRE([AC_PROG_CXX])
    AC_LANG_PUSH(C++)
        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
    @%:@include <boost/version.hpp>
    ]], [[
    #if BOOST_VERSION >= $WANT_BOOST_VERSION
    // Everything is okay
    #else
    #  error Boost version is too old
    #endif
    ]])],[
        AC_MSG_RESULT(yes)
    succeeded=yes
    found_system=yes
        ],[
        ])
    AC_LANG_POP([C++])



    dnl if we found no boost with system layout we search for boost libraries
    dnl built and installed without the --layout=system option or for a staged(not installed) version
    if test "x$succeeded" != "xyes"; then
        CPPFLAGS="$CPPFLAGS_SAVED"
        LDFLAGS="$LDFLAGS_SAVED"
        BOOST_CPPFLAGS=
        BOOST_LDFLAGS=
        _version=0
        if test "$ac_boost_path" != ""; then
            if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
                for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do
                    _version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
                    V_CHECK=`expr $_version_tmp \> $_version`
                    if test "$V_CHECK" = "1" ; then
                        _version=$_version_tmp
                    fi
                    VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
                    BOOST_CPPFLAGS="-I$ac_boost_path/include/boost-$VERSION_UNDERSCORE"
                done
                dnl if nothing found search for layout used in Windows distributions
                if test -z "$BOOST_CPPFLAGS"; then
                    if test -d "$ac_boost_path/boost" && test -r "$ac_boost_path/boost"; then
                        BOOST_CPPFLAGS="-I$ac_boost_path"
                    fi
                fi
            fi
        else
            if test "$cross_compiling" != yes; then
                for ac_boost_path in /usr /usr/local /opt /opt/local ; do
                    if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
                        for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do
                            _version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
                            V_CHECK=`expr $_version_tmp \> $_version`
                            if test "$V_CHECK" = "1" ; then
                                _version=$_version_tmp
                                best_path=$ac_boost_path
                            fi
                        done
                    fi
                done

                VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
                BOOST_CPPFLAGS="-I$best_path/include/boost-$VERSION_UNDERSCORE"
                if test "$ac_boost_lib_path" = ""; then
                    for libsubdir in $libsubdirs ; do
                        if ls "$best_path/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
                    done
                    BOOST_LDFLAGS="-L$best_path/$libsubdir"
                fi
            fi

            if test "x$BOOST_ROOT" != "x"; then
                for libsubdir in $libsubdirs ; do
                    if ls "$BOOST_ROOT/stage/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
                done
                if test -d "$BOOST_ROOT" && test -r "$BOOST_ROOT" && test -d "$BOOST_ROOT/stage/$libsubdir" && test -r "$BOOST_ROOT/stage/$libsubdir"; then
                    version_dir=`expr //$BOOST_ROOT : '.*/\(.*\)'`
                    stage_version=`echo $version_dir | sed 's/boost_//' | sed 's/_/./g'`
                        stage_version_shorten=`expr $stage_version : '\([[0-9]]*\.[[0-9]]*\)'`
                    V_CHECK=`expr $stage_version_shorten \>\= $_version`
                    if test "$V_CHECK" = "1" -a "$ac_boost_lib_path" = "" ; then
                        AC_MSG_NOTICE(We will use a staged boost library from $BOOST_ROOT)
                        BOOST_CPPFLAGS="-I$BOOST_ROOT"
                        BOOST_LDFLAGS="-L$BOOST_ROOT/stage/$libsubdir"
                    fi
                fi
            fi
        fi

        CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
        export CPPFLAGS
        LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
        export LDFLAGS

        AC_LANG_PUSH(C++)
            AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
        @%:@include <boost/version.hpp>
        ]], [[
        #if BOOST_VERSION >= $WANT_BOOST_VERSION
        // Everything is okay
        #else
        #  error Boost version is too old
        #endif
        ]])],[
            AC_MSG_RESULT(yes)
        succeeded=yes
        found_system=yes
            ],[
            ])
        AC_LANG_POP([C++])
    fi

    if test "$succeeded" != "yes" ; then
        if test "$_version" = "0" ; then
            AC_MSG_NOTICE([[We could not detect the boost libraries (version $boost_lib_version_req_shorten or higher). If you have a staged boost library (still not installed) please specify \$BOOST_ROOT in your environment and do not give a PATH to --with-boost option.  If you are sure you have boost installed, then check your version number looking in <boost/version.hpp>. See http://randspringer.de/boost for more documentation.]])
        else
            AC_MSG_NOTICE([Your boost libraries seems to old (version $_version).])
        fi
        # execute ACTION-IF-NOT-FOUND (if present):
        ifelse([$3], , :, [$3])
    else
        AC_SUBST(BOOST_CPPFLAGS)
        AC_SUBST(BOOST_LDFLAGS)
        AC_DEFINE(HAVE_BOOST,,[define if the Boost library is available])
        # execute ACTION-IF-FOUND (if present):
        ifelse([$2], , :, [$2])
    fi

    CPPFLAGS="$CPPFLAGS_SAVED"
    LDFLAGS="$LDFLAGS_SAVED"
fi

])

# ===========================================================================
#      http://www.gnu.org/software/autoconf-archive/ax_boost_chrono.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_BOOST_CHRONO
#
# DESCRIPTION
#
#   Test for System library from the Boost C++ libraries. The macro requires
#   a preceding call to AX_BOOST_BASE. Further documentation is available at
#   <http://randspringer.de/boost/index.html>.
#
#   This macro calls:
#
#     AC_SUBST(BOOST_CHRONO_LIB)
#
#   And sets:
#
#     HAVE_BOOST_CHRONO
#
# LICENSE
#
#   Copyright (c) 2012 Xiyue Deng <manphiz@gmail.com>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 1

AC_DEFUN([AX_BOOST_CHRONO],
[
	AC_ARG_WITH([boost-chrono],
	AS_HELP_STRING([--with-boost-chrono@<:@=special-lib@:>@],
                   [use the Chrono library from boost - it is possible to specify a certain library for the linker
                        e.g. --with-boost-chrono=boost_chrono-gcc-mt ]),
        [
        if test "$withval" = "no"; then
			want_boost="no"
        elif test "$withval" = "yes"; then
            want_boost="yes"
            ax_boost_user_chrono_lib=""
        else
		    want_boost="yes"
		ax_boost_user_chrono_lib="$withval"
		fi
        ],
        [want_boost="yes"]
	)

	if test "x$want_boost" = "xyes"; then
        AC_REQUIRE([AC_PROG_CC])
        AC_REQUIRE([AC_CANONICAL_BUILD])
		CPPFLAGS_SAVED="$CPPFLAGS"
		CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
		export CPPFLAGS

		LDFLAGS_SAVED="$LDFLAGS"
		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
		export LDFLAGS

        AC_CACHE_CHECK(whether the Boost::Chrono library is available,
					   ax_cv_boost_chrono,
        [AC_LANG_PUSH([C++])
			 CXXFLAGS_SAVE=$CXXFLAGS

			 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/chrono.hpp>]],
                                   [[boost::chrono::system_clock::time_point time;]])],
                   ax_cv_boost_chrono=yes, ax_cv_boost_chrono=no)
			 CXXFLAGS=$CXXFLAGS_SAVE
             AC_LANG_POP([C++])
		])
		if test "x$ax_cv_boost_chrono" = "xyes"; then
			AC_SUBST(BOOST_CPPFLAGS)

			AC_DEFINE(HAVE_BOOST_CHRONO,,[define if the Boost::Chrono library is available])
            BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`

			LDFLAGS_SAVE=$LDFLAGS
            if test "x$ax_boost_user_chrono_lib" = "x"; then
                ax_lib=
                for libextension in `ls $BOOSTLIBDIR/libboost_chrono*.so* $BOOSTLIBDIR/libboost_chrono*.dylib* $BOOSTLIBDIR/libboost_chrono*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_chrono.*\)\.so.*$;\1;' -e 's;^lib\(boost_chrono.*\)\.dylib.*$;\1;' -e 's;^lib\(boost_chrono.*\)\.a.*$;\1;'` ; do
                     ax_lib=${libextension}
				    AC_CHECK_LIB($ax_lib, exit,
                                 [BOOST_CHRONO_LIB="-l$ax_lib"; AC_SUBST(BOOST_CHRONO_LIB) link_chrono="yes"; break],
                                 [link_chrono="no"])
				done
                if test "x$link_chrono" != "xyes"; then
                for libextension in `ls $BOOSTLIBDIR/boost_chrono*.dll* $BOOSTLIBDIR/boost_chrono*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^\(boost_chrono.*\)\.dll.*$;\1;' -e 's;^\(boost_chrono.*\)\.a.*$;\1;'` ; do
                     ax_lib=${libextension}
				    AC_CHECK_LIB($ax_lib, exit,
                                 [BOOST_CHRONO_LIB="-l$ax_lib"; AC_SUBST(BOOST_CHRONO_LIB) link_chrono="yes"; break],
                                 [link_chrono="no"])
				done
                fi

            else
               for ax_lib in $ax_boost_user_chrono_lib boost_chrono-$ax_boost_user_chrono_lib; do
				      AC_CHECK_LIB($ax_lib, exit,
                                   [BOOST_CHRONO_LIB="-l$ax_lib"; AC_SUBST(BOOST_CHRONO_LIB) link_chrono="yes"; break],
                                   [link_chrono="no"])
                  done

            fi
            if test "x$ax_lib" = "x"; then
                AC_MSG_ERROR(Could not find a version of the boost_chrono library!)
            fi
			if test "x$link_chrono" = "xno"; then
				AC_MSG_ERROR(Could not link against $ax_lib !)
			fi
		fi

		CPPFLAGS="$CPPFLAGS_SAVED"
	LDFLAGS="$LDFLAGS_SAVED"
	fi
])

# ===========================================================================
#    http://www.gnu.org/software/autoconf-archive/ax_boost_filesystem.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_BOOST_FILESYSTEM
#
# DESCRIPTION
#
#   Test for Filesystem library from the Boost C++ libraries. The macro
#   requires a preceding call to AX_BOOST_BASE. Further documentation is
#   available at <http://randspringer.de/boost/index.html>.
#
#   This macro calls:
#
#     AC_SUBST(BOOST_FILESYSTEM_LIB)
#
#   And sets:
#
#     HAVE_BOOST_FILESYSTEM
#
# LICENSE
#
#   Copyright (c) 2009 Thomas Porschberg <thomas@randspringer.de>
#   Copyright (c) 2009 Michael Tindal
#   Copyright (c) 2009 Roman Rybalko <libtorrent@romanr.info>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 26

AC_DEFUN([AX_BOOST_FILESYSTEM],
[
	AC_ARG_WITH([boost-filesystem],
	AS_HELP_STRING([--with-boost-filesystem@<:@=special-lib@:>@],
                   [use the Filesystem library from boost - it is possible to specify a certain library for the linker
                        e.g. --with-boost-filesystem=boost_filesystem-gcc-mt ]),
        [
        if test "$withval" = "no"; then
			want_boost="no"
        elif test "$withval" = "yes"; then
            want_boost="yes"
            ax_boost_user_filesystem_lib=""
        else
		    want_boost="yes"
		ax_boost_user_filesystem_lib="$withval"
		fi
        ],
        [want_boost="yes"]
	)

	if test "x$want_boost" = "xyes"; then
        AC_REQUIRE([AC_PROG_CC])
		CPPFLAGS_SAVED="$CPPFLAGS"
		CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
		export CPPFLAGS

		LDFLAGS_SAVED="$LDFLAGS"
		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
		export LDFLAGS

		LIBS_SAVED=$LIBS
		LIBS="$LIBS $BOOST_SYSTEM_LIB"
		export LIBS

        AC_CACHE_CHECK(whether the Boost::Filesystem library is available,
					   ax_cv_boost_filesystem,
        [AC_LANG_PUSH([C++])
         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/filesystem/path.hpp>]],
                                   [[using namespace boost::filesystem;
                                   path my_path( "foo/bar/data.txt" );
                                   return 0;]])],
					       ax_cv_boost_filesystem=yes, ax_cv_boost_filesystem=no)
         AC_LANG_POP([C++])
		])
		if test "x$ax_cv_boost_filesystem" = "xyes"; then
			AC_DEFINE(HAVE_BOOST_FILESYSTEM,,[define if the Boost::Filesystem library is available])
            BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`
            ax_lib=
            if test "x$ax_boost_user_filesystem_lib" = "x"; then
                for libextension in `ls -r $BOOSTLIBDIR/libboost_filesystem* 2>/dev/null | sed 's,.*/lib,,' | sed 's,\..*,,'` ; do
                     ax_lib=${libextension}
				    AC_CHECK_LIB($ax_lib, exit,
                                 [BOOST_FILESYSTEM_LIB="-l$ax_lib"; AC_SUBST(BOOST_FILESYSTEM_LIB) link_filesystem="yes"; break],
                                 [link_filesystem="no"])
				done
                if test "x$link_filesystem" != "xyes"; then
                for libextension in `ls -r $BOOSTLIBDIR/boost_filesystem* 2>/dev/null | sed 's,.*/,,' | sed -e 's,\..*,,'` ; do
                     ax_lib=${libextension}
				    AC_CHECK_LIB($ax_lib, exit,
                                 [BOOST_FILESYSTEM_LIB="-l$ax_lib"; AC_SUBST(BOOST_FILESYSTEM_LIB) link_filesystem="yes"; break],
                                 [link_filesystem="no"])
				done
		    fi
            else
               for ax_lib in $ax_boost_user_filesystem_lib boost_filesystem-$ax_boost_user_filesystem_lib; do
				      AC_CHECK_LIB($ax_lib, exit,
                                   [BOOST_FILESYSTEM_LIB="-l$ax_lib"; AC_SUBST(BOOST_FILESYSTEM_LIB) link_filesystem="yes"; break],
                                   [link_filesystem="no"])
                  done

            fi
            if test "x$ax_lib" = "x"; then
                AC_MSG_ERROR(Could not find a version of the boost_filesystem library!)
            fi
			if test "x$link_filesystem" != "xyes"; then
				AC_MSG_ERROR(Could not link against $ax_lib !)
			fi
		fi

		CPPFLAGS="$CPPFLAGS_SAVED"
		LDFLAGS="$LDFLAGS_SAVED"
		LIBS="$LIBS_SAVED"
	fi
])

# ============================================================================
#  http://www.gnu.org/software/autoconf-archive/ax_boost_program_options.html
# ============================================================================
#
# SYNOPSIS
#
#   AX_BOOST_PROGRAM_OPTIONS
#
# DESCRIPTION
#
#   Test for program options library from the Boost C++ libraries. The macro
#   requires a preceding call to AX_BOOST_BASE. Further documentation is
#   available at <http://randspringer.de/boost/index.html>.
#
#   This macro calls:
#
#     AC_SUBST(BOOST_PROGRAM_OPTIONS_LIB)
#
#   And sets:
#
#     HAVE_BOOST_PROGRAM_OPTIONS
#
# LICENSE
#
#   Copyright (c) 2009 Thomas Porschberg <thomas@randspringer.de>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 24

AC_DEFUN([AX_BOOST_PROGRAM_OPTIONS],
[
	AC_ARG_WITH([boost-program-options],
		AS_HELP_STRING([--with-boost-program-options@<:@=special-lib@:>@],
                       [use the program options library from boost - it is possible to specify a certain library for the linker
                        e.g. --with-boost-program-options=boost_program_options-gcc-mt-1_33_1 ]),
        [
        if test "$withval" = "no"; then
			want_boost="no"
        elif test "$withval" = "yes"; then
            want_boost="yes"
            ax_boost_user_program_options_lib=""
        else
		    want_boost="yes"
		ax_boost_user_program_options_lib="$withval"
		fi
        ],
        [want_boost="yes"]
	)

	if test "x$want_boost" = "xyes"; then
        AC_REQUIRE([AC_PROG_CC])
	    export want_boost
		CPPFLAGS_SAVED="$CPPFLAGS"
		CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
		export CPPFLAGS
		LDFLAGS_SAVED="$LDFLAGS"
		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
		export LDFLAGS
		AC_CACHE_CHECK([whether the Boost::Program_Options library is available],
					   ax_cv_boost_program_options,
					   [AC_LANG_PUSH(C++)
				AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/program_options/errors.hpp>
                                                          ]],
                                  [[boost::program_options::error err("Error message");
                                   return 0;]])],
                           ax_cv_boost_program_options=yes, ax_cv_boost_program_options=no)
					AC_LANG_POP([C++])
		])
		if test "$ax_cv_boost_program_options" = yes; then
				AC_DEFINE(HAVE_BOOST_PROGRAM_OPTIONS,,[define if the Boost::PROGRAM_OPTIONS library is available])
                  BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`
                if test "x$ax_boost_user_program_options_lib" = "x"; then
                for libextension in `ls $BOOSTLIBDIR/libboost_program_options*.so* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_program_options.*\)\.so.*$;\1;'` `ls $BOOSTLIBDIR/libboost_program_options*.dylib* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_program_options.*\)\.dylib.*$;\1;'` `ls $BOOSTLIBDIR/libboost_program_options*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_program_options.*\)\.a.*$;\1;'` ; do
                     ax_lib=${libextension}
				    AC_CHECK_LIB($ax_lib, exit,
                                 [BOOST_PROGRAM_OPTIONS_LIB="-l$ax_lib"; AC_SUBST(BOOST_PROGRAM_OPTIONS_LIB) link_program_options="yes"; break],
                                 [link_program_options="no"])
				done
                if test "x$link_program_options" != "xyes"; then
                for libextension in `ls $BOOSTLIBDIR/boost_program_options*.dll* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^\(boost_program_options.*\)\.dll.*$;\1;'` `ls $BOOSTLIBDIR/boost_program_options*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^\(boost_program_options.*\)\.a.*$;\1;'` ; do
                     ax_lib=${libextension}
				    AC_CHECK_LIB($ax_lib, exit,
                                 [BOOST_PROGRAM_OPTIONS_LIB="-l$ax_lib"; AC_SUBST(BOOST_PROGRAM_OPTIONS_LIB) link_program_options="yes"; break],
                                 [link_program_options="no"])
				done
                fi
                else
                  for ax_lib in $ax_boost_user_program_options_lib boost_program_options-$ax_boost_user_program_options_lib; do
				      AC_CHECK_LIB($ax_lib, main,
                                   [BOOST_PROGRAM_OPTIONS_LIB="-l$ax_lib"; AC_SUBST(BOOST_PROGRAM_OPTIONS_LIB) link_program_options="yes"; break],
                                   [link_program_options="no"])
                  done
                fi
            if test "x$ax_lib" = "x"; then
                AC_MSG_ERROR(Could not find a version of the boost_program_options library!)
            fi
				if test "x$link_program_options" != "xyes"; then
					AC_MSG_ERROR([Could not link against [$ax_lib] !])
				fi
		fi
		CPPFLAGS="$CPPFLAGS_SAVED"
	LDFLAGS="$LDFLAGS_SAVED"
	fi
])

# ===========================================================================
#      http://www.gnu.org/software/autoconf-archive/ax_boost_system.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_BOOST_SYSTEM
#
# DESCRIPTION
#
#   Test for System library from the Boost C++ libraries. The macro requires
#   a preceding call to AX_BOOST_BASE. Further documentation is available at
#   <http://randspringer.de/boost/index.html>.
#
#   This macro calls:
#
#     AC_SUBST(BOOST_SYSTEM_LIB)
#
#   And sets:
#
#     HAVE_BOOST_SYSTEM
#
# LICENSE
#
#   Copyright (c) 2008 Thomas Porschberg <thomas@randspringer.de>
#   Copyright (c) 2008 Michael Tindal
#   Copyright (c) 2008 Daniel Casimiro <dan.casimiro@gmail.com>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 18

AC_DEFUN([AX_BOOST_SYSTEM],
[
	AC_ARG_WITH([boost-system],
	AS_HELP_STRING([--with-boost-system@<:@=special-lib@:>@],
                   [use the System library from boost - it is possible to specify a certain library for the linker
                        e.g. --with-boost-system=boost_system-gcc-mt ]),
        [
        if test "$withval" = "no"; then
			want_boost="no"
        elif test "$withval" = "yes"; then
            want_boost="yes"
            ax_boost_user_system_lib=""
        else
		    want_boost="yes"
		ax_boost_user_system_lib="$withval"
		fi
        ],
        [want_boost="yes"]
	)

	if test "x$want_boost" = "xyes"; then
        AC_REQUIRE([AC_PROG_CC])
        AC_REQUIRE([AC_CANONICAL_BUILD])
		CPPFLAGS_SAVED="$CPPFLAGS"
		CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
		export CPPFLAGS

		LDFLAGS_SAVED="$LDFLAGS"
		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
		export LDFLAGS

        AC_CACHE_CHECK(whether the Boost::System library is available,
					   ax_cv_boost_system,
        [AC_LANG_PUSH([C++])
			 CXXFLAGS_SAVE=$CXXFLAGS
			 CXXFLAGS=

			 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/system/error_code.hpp>]],
				    [[boost::system::error_category *a = 0;]])],
                   ax_cv_boost_system=yes, ax_cv_boost_system=no)
			 CXXFLAGS=$CXXFLAGS_SAVE
             AC_LANG_POP([C++])
		])
		if test "x$ax_cv_boost_system" = "xyes"; then
			AC_SUBST(BOOST_CPPFLAGS)

			AC_DEFINE(HAVE_BOOST_SYSTEM,,[define if the Boost::System library is available])
            BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`

			LDFLAGS_SAVE=$LDFLAGS
            if test "x$ax_boost_user_system_lib" = "x"; then
                ax_lib=
                for libextension in `ls -r $BOOSTLIBDIR/libboost_system* 2>/dev/null | sed 's,.*/lib,,' | sed 's,\..*,,'` ; do
                     ax_lib=${libextension}
				    AC_CHECK_LIB($ax_lib, exit,
                                 [BOOST_SYSTEM_LIB="-l$ax_lib"; AC_SUBST(BOOST_SYSTEM_LIB) link_system="yes"; break],
                                 [link_system="no"])
				done
                if test "x$link_system" != "xyes"; then
                for libextension in `ls -r $BOOSTLIBDIR/boost_system* 2>/dev/null | sed 's,.*/,,' | sed -e 's,\..*,,'` ; do
                     ax_lib=${libextension}
				    AC_CHECK_LIB($ax_lib, exit,
                                 [BOOST_SYSTEM_LIB="-l$ax_lib"; AC_SUBST(BOOST_SYSTEM_LIB) link_system="yes"; break],
                                 [link_system="no"])
				done
                fi

            else
               for ax_lib in $ax_boost_user_system_lib boost_system-$ax_boost_user_system_lib; do
				      AC_CHECK_LIB($ax_lib, exit,
                                   [BOOST_SYSTEM_LIB="-l$ax_lib"; AC_SUBST(BOOST_SYSTEM_LIB) link_system="yes"; break],
                                   [link_system="no"])
                  done

            fi
            if test "x$ax_lib" = "x"; then
                AC_MSG_ERROR(Could not find a version of the boost_system library!)
            fi
			if test "x$link_system" = "xno"; then
				AC_MSG_ERROR(Could not link against $ax_lib !)
			fi
		fi

		CPPFLAGS="$CPPFLAGS_SAVED"
	LDFLAGS="$LDFLAGS_SAVED"
	fi
])

# ===========================================================================
#      http://www.gnu.org/software/autoconf-archive/ax_boost_thread.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_BOOST_THREAD
#
# DESCRIPTION
#
#   Test for Thread library from the Boost C++ libraries. The macro requires
#   a preceding call to AX_BOOST_BASE. Further documentation is available at
#   <http://randspringer.de/boost/index.html>.
#
#   This macro calls:
#
#     AC_SUBST(BOOST_THREAD_LIB)
#
#   And sets:
#
#     HAVE_BOOST_THREAD
#
# LICENSE
#
#   Copyright (c) 2009 Thomas Porschberg <thomas@randspringer.de>
#   Copyright (c) 2009 Michael Tindal
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 27

AC_DEFUN([AX_BOOST_THREAD],
[
	AC_ARG_WITH([boost-thread],
	AS_HELP_STRING([--with-boost-thread@<:@=special-lib@:>@],
                   [use the Thread library from boost - it is possible to specify a certain library for the linker
                        e.g. --with-boost-thread=boost_thread-gcc-mt ]),
        [
        if test "$withval" = "no"; then
			want_boost="no"
        elif test "$withval" = "yes"; then
            want_boost="yes"
            ax_boost_user_thread_lib=""
        else
		    want_boost="yes"
		ax_boost_user_thread_lib="$withval"
		fi
        ],
        [want_boost="yes"]
	)

	if test "x$want_boost" = "xyes"; then
        AC_REQUIRE([AC_PROG_CC])
        AC_REQUIRE([AC_CANONICAL_BUILD])
		CPPFLAGS_SAVED="$CPPFLAGS"
		CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
		export CPPFLAGS

		LDFLAGS_SAVED="$LDFLAGS"
		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
		export LDFLAGS

        AC_CACHE_CHECK(whether the Boost::Thread library is available,
					   ax_cv_boost_thread,
        [AC_LANG_PUSH([C++])
			 CXXFLAGS_SAVE=$CXXFLAGS

			 if test "x$host_os" = "xsolaris" ; then
				 CXXFLAGS="-pthreads $CXXFLAGS"
			 elif test "x$host_os" = "xmingw32" ; then
				 CXXFLAGS="-mthreads $CXXFLAGS"
			 else
				CXXFLAGS="-pthread $CXXFLAGS"
			 fi
			 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/thread/thread.hpp>]],
                                   [[boost::thread_group thrds;
                                   return 0;]])],
                   ax_cv_boost_thread=yes, ax_cv_boost_thread=no)
			 CXXFLAGS=$CXXFLAGS_SAVE
             AC_LANG_POP([C++])
		])
		if test "x$ax_cv_boost_thread" = "xyes"; then
           if test "x$host_os" = "xsolaris" ; then
			  BOOST_CPPFLAGS="-pthreads $BOOST_CPPFLAGS"
		   elif test "x$host_os" = "xmingw32" ; then
			  BOOST_CPPFLAGS="-mthreads $BOOST_CPPFLAGS"
		   else
			  BOOST_CPPFLAGS="-pthread $BOOST_CPPFLAGS"
		   fi

			AC_SUBST(BOOST_CPPFLAGS)

			AC_DEFINE(HAVE_BOOST_THREAD,,[define if the Boost::Thread library is available])
            BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`

			LDFLAGS_SAVE=$LDFLAGS
                        case "x$host_os" in
                          *bsd* )
                               LDFLAGS="-pthread $LDFLAGS"
                          break;
                          ;;
                        esac
            if test "x$ax_boost_user_thread_lib" = "x"; then
                ax_lib=
                for libextension in `ls -r $BOOSTLIBDIR/libboost_thread* 2>/dev/null | sed 's,.*/lib,,' | sed 's,\..*,,'`; do
                     ax_lib=${libextension}
				    AC_CHECK_LIB($ax_lib, exit,
                                 [BOOST_THREAD_LIB="-l$ax_lib"; AC_SUBST(BOOST_THREAD_LIB) link_thread="yes"; break],
                                 [link_thread="no"])
				done
                if test "x$link_thread" != "xyes"; then
                for libextension in `ls -r $BOOSTLIBDIR/boost_thread* 2>/dev/null | sed 's,.*/,,' | sed 's,\..*,,'`; do
                     ax_lib=${libextension}
				    AC_CHECK_LIB($ax_lib, exit,
                                 [BOOST_THREAD_LIB="-l$ax_lib"; AC_SUBST(BOOST_THREAD_LIB) link_thread="yes"; break],
                                 [link_thread="no"])
				done
                fi

            else
               for ax_lib in $ax_boost_user_thread_lib boost_thread-$ax_boost_user_thread_lib; do
				      AC_CHECK_LIB($ax_lib, exit,
                                   [BOOST_THREAD_LIB="-l$ax_lib"; AC_SUBST(BOOST_THREAD_LIB) link_thread="yes"; break],
                                   [link_thread="no"])
                  done

            fi
            if test "x$ax_lib" = "x"; then
                AC_MSG_ERROR(Could not find a version of the boost_thread library!)
            fi
			if test "x$link_thread" = "xno"; then
				AC_MSG_ERROR(Could not link against $ax_lib !)
                        else
                           case "x$host_os" in
                              *bsd* )
				BOOST_LDFLAGS="-pthread $BOOST_LDFLAGS"
                              break;
                              ;;
                           esac

			fi
		fi

		CPPFLAGS="$CPPFLAGS_SAVED"
	LDFLAGS="$LDFLAGS_SAVED"
	fi
])

# ================================================================================
#  http://www.gnu.org/software/autoconf-archive/ax_boost_unit_test_framework.html
# ================================================================================
#
# SYNOPSIS
#
#   AX_BOOST_UNIT_TEST_FRAMEWORK
#
# DESCRIPTION
#
#   Test for Unit_Test_Framework library from the Boost C++ libraries. The
#   macro requires a preceding call to AX_BOOST_BASE. Further documentation
#   is available at <http://randspringer.de/boost/index.html>.
#
#   This macro calls:
#
#     AC_SUBST(BOOST_UNIT_TEST_FRAMEWORK_LIB)
#
#   And sets:
#
#     HAVE_BOOST_UNIT_TEST_FRAMEWORK
#
# LICENSE
#
#   Copyright (c) 2008 Thomas Porschberg <thomas@randspringer.de>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 19

AC_DEFUN([AX_BOOST_UNIT_TEST_FRAMEWORK],
[
	AC_ARG_WITH([boost-unit-test-framework],
	AS_HELP_STRING([--with-boost-unit-test-framework@<:@=special-lib@:>@],
                   [use the Unit_Test_Framework library from boost - it is possible to specify a certain library for the linker
                        e.g. --with-boost-unit-test-framework=boost_unit_test_framework-gcc ]),
        [
        if test "$withval" = "no"; then
			want_boost="no"
        elif test "$withval" = "yes"; then
            want_boost="yes"
            ax_boost_user_unit_test_framework_lib=""
        else
		    want_boost="yes"
		ax_boost_user_unit_test_framework_lib="$withval"
		fi
        ],
        [want_boost="yes"]
	)

	if test "x$want_boost" = "xyes"; then
        AC_REQUIRE([AC_PROG_CC])
		CPPFLAGS_SAVED="$CPPFLAGS"
		CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
		export CPPFLAGS

		LDFLAGS_SAVED="$LDFLAGS"
		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
		export LDFLAGS

        AC_CACHE_CHECK(whether the Boost::Unit_Test_Framework library is available,
					   ax_cv_boost_unit_test_framework,
        [AC_LANG_PUSH([C++])
			 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/test/unit_test.hpp>]],
                                    [[using boost::unit_test::test_suite;
							 test_suite* test= BOOST_TEST_SUITE( "Unit test example 1" ); return 0;]])],
                   ax_cv_boost_unit_test_framework=yes, ax_cv_boost_unit_test_framework=no)
         AC_LANG_POP([C++])
		])
		if test "x$ax_cv_boost_unit_test_framework" = "xyes"; then
			AC_DEFINE(HAVE_BOOST_UNIT_TEST_FRAMEWORK,,[define if the Boost::Unit_Test_Framework library is available])
            BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`

            if test "x$ax_boost_user_unit_test_framework_lib" = "x"; then
			saved_ldflags="${LDFLAGS}"
                ax_lib=
                for monitor_library in `ls $BOOSTLIBDIR/libboost_unit_test_framework*.so* $BOOSTLIBDIR/libboost_unit_test_framework*.dylib* $BOOSTLIBDIR/libboost_unit_test_framework*.a* 2>/dev/null` ; do
                    if test -r $monitor_library ; then
                       libextension=`echo $monitor_library | sed 's,.*/,,' | sed -e 's;^lib\(boost_unit_test_framework.*\)\.so.*$;\1;' -e 's;^lib\(boost_unit_test_framework.*\)\.dylib.*$;\1;' -e 's;^lib\(boost_unit_test_framework.*\)\.a.*$;\1;'`
                       ax_lib=${libextension}
                       link_unit_test_framework="yes"
                    else
                       link_unit_test_framework="no"
                    fi

			    if test "x$link_unit_test_framework" = "xyes"; then
                      BOOST_UNIT_TEST_FRAMEWORK_LIB="-l$ax_lib"
                      AC_SUBST(BOOST_UNIT_TEST_FRAMEWORK_LIB)
					  break
				    fi
                done
                if test "x$link_unit_test_framework" != "xyes"; then
                for libextension in `ls $BOOSTLIBDIR/boost_unit_test_framework*.dll* $BOOSTLIBDIR/boost_unit_test_framework*.a* 2>/dev/null  | sed 's,.*/,,' | sed -e 's;^\(boost_unit_test_framework.*\)\.dll.*$;\1;' -e 's;^\(boost_unit_test_framework.*\)\.a.*$;\1;'` ; do
                     ax_lib=${libextension}
				    AC_CHECK_LIB($ax_lib, exit,
                                 [BOOST_UNIT_TEST_FRAMEWORK_LIB="-l$ax_lib"; AC_SUBST(BOOST_UNIT_TEST_FRAMEWORK_LIB) link_unit_test_framework="yes"; break],
                                 [link_unit_test_framework="no"])
				done
                fi
            else
                link_unit_test_framework="no"
			saved_ldflags="${LDFLAGS}"
                for ax_lib in boost_unit_test_framework-$ax_boost_user_unit_test_framework_lib $ax_boost_user_unit_test_framework_lib ; do
                   if test "x$link_unit_test_framework" = "xyes"; then
                      break;
                   fi
                   for unittest_library in `ls $BOOSTLIBDIR/lib${ax_lib}.so* $BOOSTLIBDIR/lib${ax_lib}.a* 2>/dev/null` ; do
                   if test -r $unittest_library ; then
                       libextension=`echo $unittest_library | sed 's,.*/,,' | sed -e 's;^lib\(boost_unit_test_framework.*\)\.so.*$;\1;' -e 's;^lib\(boost_unit_test_framework.*\)\.a*$;\1;'`
                       ax_lib=${libextension}
                       link_unit_test_framework="yes"
                    else
                       link_unit_test_framework="no"
                    fi

				if test "x$link_unit_test_framework" = "xyes"; then
                        BOOST_UNIT_TEST_FRAMEWORK_LIB="-l$ax_lib"
                        AC_SUBST(BOOST_UNIT_TEST_FRAMEWORK_LIB)
					    break
				    fi
                  done
               done
            fi
            if test "x$ax_lib" = "x"; then
                AC_MSG_ERROR(Could not find a version of the boost_unit_test_framework library!)
            fi
			if test "x$link_unit_test_framework" != "xyes"; then
				AC_MSG_ERROR(Could not link against $ax_lib !)
			fi
		fi

		CPPFLAGS="$CPPFLAGS_SAVED"
	LDFLAGS="$LDFLAGS_SAVED"
	fi
])

# ===========================================================================
#   http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
#
# DESCRIPTION
#
#   Check whether the given FLAG works with the current language's compiler
#   or gives an error.  (Warnings, however, are ignored)
#
#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
#   success/failure.
#
#   If EXTRA-FLAGS is defined, it is added to the current language's default
#   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
#   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
#   force the compiler to issue an error when a bad flag is given.
#
#   INPUT gives an alternative input source to AC_COMPILE_IFELSE.
#
#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
#   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
#
# LICENSE
#
#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
#   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
#
#   This program is free software: you can redistribute it and/or modify it
#   under the terms of the GNU General Public License as published by the
#   Free Software Foundation, either version 3 of the License, or (at your
#   option) any later version.
#
#   This program is distributed in the hope that it will be useful, but
#   WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
#   Public License for more details.
#
#   You should have received a copy of the GNU General Public License along
#   with this program. If not, see <http://www.gnu.org/licenses/>.
#
#   As a special exception, the respective Autoconf Macro's copyright owner
#   gives unlimited permission to copy, distribute and modify the configure
#   scripts that are the output of Autoconf when processing the Macro. You
#   need not follow the terms of the GNU General Public License when using
#   or distributing such scripts, even though portions of the text of the
#   Macro appear in them. The GNU General Public License (GPL) does govern
#   all other use of the material that constitutes the Autoconf Macro.
#
#   This special exception to the GPL applies to versions of the Autoconf
#   Macro released by the Autoconf Archive. When you make and distribute a
#   modified version of the Autoconf Macro, you may extend this special
#   exception to the GPL to apply to your modified version as well.

#serial 4

AC_DEFUN([AX_CHECK_COMPILE_FLAG],
[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
  AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
    [AS_VAR_SET(CACHEVAR,[yes])],
    [AS_VAR_SET(CACHEVAR,[no])])
  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
AS_VAR_IF(CACHEVAR,yes,
  [m4_default([$2], :)],
  [m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
])dnl AX_CHECK_COMPILE_FLAGS

# ===========================================================================
#    http://www.gnu.org/software/autoconf-archive/ax_check_link_flag.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CHECK_LINK_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
#
# DESCRIPTION
#
#   Check whether the given FLAG works with the linker or gives an error.
#   (Warnings, however, are ignored)
#
#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
#   success/failure.
#
#   If EXTRA-FLAGS is defined, it is added to the linker's default flags
#   when the check is done.  The check is thus made with the flags: "LDFLAGS
#   EXTRA-FLAGS FLAG".  This can for example be used to force the linker to
#   issue an error when a bad flag is given.
#
#   INPUT gives an alternative input source to AC_LINK_IFELSE.
#
#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
#   macro in sync with AX_CHECK_{PREPROC,COMPILE}_FLAG.
#
# LICENSE
#
#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
#   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
#
#   This program is free software: you can redistribute it and/or modify it
#   under the terms of the GNU General Public License as published by the
#   Free Software Foundation, either version 3 of the License, or (at your
#   option) any later version.
#
#   This program is distributed in the hope that it will be useful, but
#   WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
#   Public License for more details.
#
#   You should have received a copy of the GNU General Public License along
#   with this program. If not, see <http://www.gnu.org/licenses/>.
#
#   As a special exception, the respective Autoconf Macro's copyright owner
#   gives unlimited permission to copy, distribute and modify the configure
#   scripts that are the output of Autoconf when processing the Macro. You
#   need not follow the terms of the GNU General Public License when using
#   or distributing such scripts, even though portions of the text of the
#   Macro appear in them. The GNU General Public License (GPL) does govern
#   all other use of the material that constitutes the Autoconf Macro.
#
#   This special exception to the GPL applies to versions of the Autoconf
#   Macro released by the Autoconf Archive. When you make and distribute a
#   modified version of the Autoconf Macro, you may extend this special
#   exception to the GPL to apply to your modified version as well.

#serial 4

AC_DEFUN([AX_CHECK_LINK_FLAG],
[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl
AC_CACHE_CHECK([whether the linker accepts $1], CACHEVAR, [
  ax_check_save_flags=$LDFLAGS
  LDFLAGS="$LDFLAGS $4 $1"
  AC_LINK_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
    [AS_VAR_SET(CACHEVAR,[yes])],
    [AS_VAR_SET(CACHEVAR,[no])])
  LDFLAGS=$ax_check_save_flags])
AS_VAR_IF(CACHEVAR,yes,
  [m4_default([$2], :)],
  [m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
])dnl AX_CHECK_LINK_FLAGS

# ===========================================================================
#   http://www.gnu.org/software/autoconf-archive/ax_check_preproc_flag.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CHECK_PREPROC_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
#
# DESCRIPTION
#
#   Check whether the given FLAG works with the current language's
#   preprocessor or gives an error.  (Warnings, however, are ignored)
#
#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
#   success/failure.
#
#   If EXTRA-FLAGS is defined, it is added to the preprocessor's default
#   flags when the check is done.  The check is thus made with the flags:
#   "CPPFLAGS EXTRA-FLAGS FLAG".  This can for example be used to force the
#   preprocessor to issue an error when a bad flag is given.
#
#   INPUT gives an alternative input source to AC_PREPROC_IFELSE.
#
#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
#   macro in sync with AX_CHECK_{COMPILE,LINK}_FLAG.
#
# LICENSE
#
#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
#   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
#
#   This program is free software: you can redistribute it and/or modify it
#   under the terms of the GNU General Public License as published by the
#   Free Software Foundation, either version 3 of the License, or (at your
#   option) any later version.
#
#   This program is distributed in the hope that it will be useful, but
#   WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
#   Public License for more details.
#
#   You should have received a copy of the GNU General Public License along
#   with this program. If not, see <http://www.gnu.org/licenses/>.
#
#   As a special exception, the respective Autoconf Macro's copyright owner
#   gives unlimited permission to copy, distribute and modify the configure
#   scripts that are the output of Autoconf when processing the Macro. You
#   need not follow the terms of the GNU General Public License when using
#   or distributing such scripts, even though portions of the text of the
#   Macro appear in them. The GNU General Public License (GPL) does govern
#   all other use of the material that constitutes the Autoconf Macro.
#
#   This special exception to the GPL applies to versions of the Autoconf
#   Macro released by the Autoconf Archive. When you make and distribute a
#   modified version of the Autoconf Macro, you may extend this special
#   exception to the GPL to apply to your modified version as well.

#serial 4

AC_DEFUN([AX_CHECK_PREPROC_FLAG],
[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]cppflags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG preprocessor accepts $1], CACHEVAR, [
  ax_check_save_flags=$CPPFLAGS
  CPPFLAGS="$CPPFLAGS $4 $1"
  AC_PREPROC_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
    [AS_VAR_SET(CACHEVAR,[yes])],
    [AS_VAR_SET(CACHEVAR,[no])])
  CPPFLAGS=$ax_check_save_flags])
AS_VAR_IF(CACHEVAR,yes,
  [m4_default([$2], :)],
  [m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
])dnl AX_CHECK_PREPROC_FLAGS

# ===========================================================================
#   http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
#
# DESCRIPTION
#
#   Check for baseline language coverage in the compiler for the specified
#   version of the C++ standard.  If necessary, add switches to CXX and
#   CXXCPP to enable support.  VERSION may be '11' (for the C++11 standard)
#   or '14' (for the C++14 standard).
#
#   The second argument, if specified, indicates whether you insist on an
#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
#   -std=c++11).  If neither is specified, you get whatever works, with
#   preference for an extended mode.
#
#   The third argument, if specified 'mandatory' or if left unspecified,
#   indicates that baseline support for the specified C++ standard is
#   required and that the macro should error out if no mode with that
#   support is found.  If specified 'optional', then configuration proceeds
#   regardless, after defining HAVE_CXX${VERSION} if and only if a
#   supporting mode is found.
#
# LICENSE
#
#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
#   Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
#   Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
#   Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
#   Copyright (c) 2015 Paul Norman <penorman@mac.com>
#   Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved.  This file is offered as-is, without any
#   warranty.

#serial 4

dnl  This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
dnl  (serial version number 13).

AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
  m4_if([$1], [11], [],
        [$1], [14], [],
        [$1], [17], [m4_fatal([support for C++17 not yet implemented in AX_CXX_COMPILE_STDCXX])],
        [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
  m4_if([$2], [], [],
        [$2], [ext], [],
        [$2], [noext], [],
        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl
  m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true],
        [$3], [mandatory], [ax_cxx_compile_cxx$1_required=true],
        [$3], [optional], [ax_cxx_compile_cxx$1_required=false],
        [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])])
  m4_if([$4], [], [ax_cxx_compile_cxx$1_try_default=true],
        [$4], [default], [ax_cxx_compile_cxx$1_try_default=true],
        [$4], [nodefault], [ax_cxx_compile_cxx$1_try_default=false],
        [m4_fatal([invalid fourth argument `$4' to AX_CXX_COMPILE_STDCXX])])
  AC_LANG_PUSH([C++])dnl
  ac_success=no

  m4_if([$4], [nodefault], [], [dnl
  AC_CACHE_CHECK(whether $CXX supports C++$1 features by default,
  ax_cv_cxx_compile_cxx$1,
  [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
    [ax_cv_cxx_compile_cxx$1=yes],
    [ax_cv_cxx_compile_cxx$1=no])])
  if test x$ax_cv_cxx_compile_cxx$1 = xyes; then
    ac_success=yes
  fi])

  m4_if([$2], [noext], [], [dnl
  if test x$ac_success = xno; then
    for switch in -std=gnu++$1 -std=gnu++0x; do
      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
                     $cachevar,
        [ac_save_CXX="$CXX"
         CXX="$CXX $switch"
         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
          [eval $cachevar=yes],
          [eval $cachevar=no])
         CXX="$ac_save_CXX"])
      if eval test x\$$cachevar = xyes; then
        CXX="$CXX $switch"
        if test -n "$CXXCPP" ; then
          CXXCPP="$CXXCPP $switch"
        fi
        ac_success=yes
        break
      fi
    done
  fi])

  m4_if([$2], [ext], [], [dnl
  if test x$ac_success = xno; then
    dnl HP's aCC needs +std=c++11 according to:
    dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf
    dnl Cray's crayCC needs "-h std=c++11"
    for switch in -std=c++$1 -std=c++0x +std=c++$1 "-h std=c++$1"; do
      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
                     $cachevar,
        [ac_save_CXX="$CXX"
         CXX="$CXX $switch"
         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
          [eval $cachevar=yes],
          [eval $cachevar=no])
         CXX="$ac_save_CXX"])
      if eval test x\$$cachevar = xyes; then
        CXX="$CXX $switch"
        if test -n "$CXXCPP" ; then
          CXXCPP="$CXXCPP $switch"
        fi
        ac_success=yes
        break
      fi
    done
  fi])
  AC_LANG_POP([C++])
  if test x$ax_cxx_compile_cxx$1_required = xtrue; then
    if test x$ac_success = xno; then
      AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
    fi
  fi
  if test x$ac_success = xno; then
    HAVE_CXX$1=0
    AC_MSG_NOTICE([No compiler with C++$1 support was found])
  else
    HAVE_CXX$1=1
    AC_DEFINE(HAVE_CXX$1,1,
              [define if the compiler supports basic C++$1 syntax])
  fi
  AC_SUBST(HAVE_CXX$1)
])


dnl  Test body for checking C++11 support

m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11],
  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
)


dnl  Test body for checking C++14 support

m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
)


dnl  Tests for new features in C++11

m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[

// If the compiler admits that it is not ready for C++11, why torture it?
// Hopefully, this will speed up the test.

#ifndef __cplusplus

#error "This is not a C++ compiler"

#elif __cplusplus < 201103L

#error "This is not a C++11 compiler"

#else

namespace cxx11
{

  namespace test_static_assert
  {

    template <typename T>
    struct check
    {
      static_assert(sizeof(int) <= sizeof(T), "not big enough");
    };

  }

  namespace test_final_override
  {

    struct Base
    {
      virtual void f() {}
    };

    struct Derived : public Base
    {
      virtual void f() override {}
    };

  }

  namespace test_double_right_angle_brackets
  {

    template < typename T >
    struct check {};

    typedef check<void> single_type;
    typedef check<check<void>> double_type;
    typedef check<check<check<void>>> triple_type;
    typedef check<check<check<check<void>>>> quadruple_type;

  }

  namespace test_decltype
  {

    int
    f()
    {
      int a = 1;
      decltype(a) b = 2;
      return a + b;
    }

  }

  namespace test_type_deduction
  {

    template < typename T1, typename T2 >
    struct is_same
    {
      static const bool value = false;
    };

    template < typename T >
    struct is_same<T, T>
    {
      static const bool value = true;
    };

    template < typename T1, typename T2 >
    auto
    add(T1 a1, T2 a2) -> decltype(a1 + a2)
    {
      return a1 + a2;
    }

    int
    test(const int c, volatile int v)
    {
      static_assert(is_same<int, decltype(0)>::value == true, "");
      static_assert(is_same<int, decltype(c)>::value == false, "");
      static_assert(is_same<int, decltype(v)>::value == false, "");
      auto ac = c;
      auto av = v;
      auto sumi = ac + av + 'x';
      auto sumf = ac + av + 1.0;
      static_assert(is_same<int, decltype(ac)>::value == true, "");
      static_assert(is_same<int, decltype(av)>::value == true, "");
      static_assert(is_same<int, decltype(sumi)>::value == true, "");
      static_assert(is_same<int, decltype(sumf)>::value == false, "");
      static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
      return (sumf > 0.0) ? sumi : add(c, v);
    }

  }

  namespace test_noexcept
  {

    int f() { return 0; }
    int g() noexcept { return 0; }

    static_assert(noexcept(f()) == false, "");
    static_assert(noexcept(g()) == true, "");

  }

  namespace test_constexpr
  {

    template < typename CharT >
    unsigned long constexpr
    strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
    {
      return *s ? strlen_c_r(s + 1, acc + 1) : acc;
    }

    template < typename CharT >
    unsigned long constexpr
    strlen_c(const CharT *const s) noexcept
    {
      return strlen_c_r(s, 0UL);
    }

    static_assert(strlen_c("") == 0UL, "");
    static_assert(strlen_c("1") == 1UL, "");
    static_assert(strlen_c("example") == 7UL, "");
    static_assert(strlen_c("another\0example") == 7UL, "");

  }

  namespace test_rvalue_references
  {

    template < int N >
    struct answer
    {
      static constexpr int value = N;
    };

    answer<1> f(int&)       { return answer<1>(); }
    answer<2> f(const int&) { return answer<2>(); }
    answer<3> f(int&&)      { return answer<3>(); }

    void
    test()
    {
      int i = 0;
      const int c = 0;
      static_assert(decltype(f(i))::value == 1, "");
      static_assert(decltype(f(c))::value == 2, "");
      static_assert(decltype(f(0))::value == 3, "");
    }

  }

  namespace test_uniform_initialization
  {

    struct test
    {
      static const int zero {};
      static const int one {1};
    };

    static_assert(test::zero == 0, "");
    static_assert(test::one == 1, "");

  }

  namespace test_lambdas
  {

    void
    test1()
    {
      auto lambda1 = [](){};
      auto lambda2 = lambda1;
      lambda1();
      lambda2();
    }

    int
    test2()
    {
      auto a = [](int i, int j){ return i + j; }(1, 2);
      auto b = []() -> int { return '0'; }();
      auto c = [=](){ return a + b; }();
      auto d = [&](){ return c; }();
      auto e = [a, &b](int x) mutable {
        const auto identity = [](int y){ return y; };
        for (auto i = 0; i < a; ++i)
          a += b--;
        return x + identity(a + b);
      }(0);
      return a + b + c + d + e;
    }

    int
    test3()
    {
      const auto nullary = [](){ return 0; };
      const auto unary = [](int x){ return x; };
      using nullary_t = decltype(nullary);
      using unary_t = decltype(unary);
      const auto higher1st = [](nullary_t f){ return f(); };
      const auto higher2nd = [unary](nullary_t f1){
        return [unary, f1](unary_t f2){ return f2(unary(f1())); };
      };
      return higher1st(nullary) + higher2nd(nullary)(unary);
    }

  }

  namespace test_variadic_templates
  {

    template <int...>
    struct sum;

    template <int N0, int... N1toN>
    struct sum<N0, N1toN...>
    {
      static constexpr auto value = N0 + sum<N1toN...>::value;
    };

    template <>
    struct sum<>
    {
      static constexpr auto value = 0;
    };

    static_assert(sum<>::value == 0, "");
    static_assert(sum<1>::value == 1, "");
    static_assert(sum<23>::value == 23, "");
    static_assert(sum<1, 2>::value == 3, "");
    static_assert(sum<5, 5, 11>::value == 21, "");
    static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");

  }

  // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
  // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
  // because of this.
  namespace test_template_alias_sfinae
  {

    struct foo {};

    template<typename T>
    using member = typename T::member_type;

    template<typename T>
    void func(...) {}

    template<typename T>
    void func(member<T>*) {}

    void test();

    void test() { func<foo>(0); }

  }

}  // namespace cxx11

#endif  // __cplusplus >= 201103L

]])


dnl  Tests for new features in C++14

m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[

// If the compiler admits that it is not ready for C++14, why torture it?
// Hopefully, this will speed up the test.

#ifndef __cplusplus

#error "This is not a C++ compiler"

#elif __cplusplus < 201402L

#error "This is not a C++14 compiler"

#else

namespace cxx14
{

  namespace test_polymorphic_lambdas
  {

    int
    test()
    {
      const auto lambda = [](auto&&... args){
        const auto istiny = [](auto x){
          return (sizeof(x) == 1UL) ? 1 : 0;
        };
        const int aretiny[] = { istiny(args)... };
        return aretiny[0];
      };
      return lambda(1, 1L, 1.0f, '1');
    }

  }

  namespace test_binary_literals
  {

    constexpr auto ivii = 0b0000000000101010;
    static_assert(ivii == 42, "wrong value");

  }

  namespace test_generalized_constexpr
  {

    template < typename CharT >
    constexpr unsigned long
    strlen_c(const CharT *const s) noexcept
    {
      auto length = 0UL;
      for (auto p = s; *p; ++p)
        ++length;
      return length;
    }

    static_assert(strlen_c("") == 0UL, "");
    static_assert(strlen_c("x") == 1UL, "");
    static_assert(strlen_c("test") == 4UL, "");
    static_assert(strlen_c("another\0test") == 7UL, "");

  }

  namespace test_lambda_init_capture
  {

    int
    test()
    {
      auto x = 0;
      const auto lambda1 = [a = x](int b){ return a + b; };
      const auto lambda2 = [a = lambda1(x)](){ return a; };
      return lambda2();
    }

  }

  namespace test_digit_seperators
  {

    constexpr auto ten_million = 100'000'000;
    static_assert(ten_million == 100000000, "");

  }

  namespace test_return_type_deduction
  {

    auto f(int& x) { return x; }
    decltype(auto) g(int& x) { return x; }

    template < typename T1, typename T2 >
    struct is_same
    {
      static constexpr auto value = false;
    };

    template < typename T >
    struct is_same<T, T>
    {
      static constexpr auto value = true;
    };

    int
    test()
    {
      auto x = 0;
      static_assert(is_same<int, decltype(f(x))>::value, "");
      static_assert(is_same<int&, decltype(g(x))>::value, "");
      return x;
    }

  }

}  // namespace cxx14

#endif  // __cplusplus >= 201402L

]])

# ===========================================================================
#   http://www.gnu.org/software/autoconf-archive/ax_gcc_func_attribute.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_GCC_FUNC_ATTRIBUTE(ATTRIBUTE)
#
# DESCRIPTION
#
#   This macro checks if the compiler supports one of GCC's function
#   attributes; many other compilers also provide function attributes with
#   the same syntax. Compiler warnings are used to detect supported
#   attributes as unsupported ones are ignored by default so quieting
#   warnings when using this macro will yield false positives.
#
#   The ATTRIBUTE parameter holds the name of the attribute to be checked.
#
#   If ATTRIBUTE is supported define HAVE_FUNC_ATTRIBUTE_<ATTRIBUTE>.
#
#   The macro caches its result in the ax_cv_have_func_attribute_<attribute>
#   variable.
#
#   The macro currently supports the following function attributes:
#
#    alias
#    aligned
#    alloc_size
#    always_inline
#    artificial
#    cold
#    const
#    constructor
#    constructor_priority for constructor attribute with priority
#    deprecated
#    destructor
#    dllexport
#    dllimport
#    error
#    externally_visible
#    flatten
#    format
#    format_arg
#    gnu_inline
#    hot
#    ifunc
#    leaf
#    malloc
#    noclone
#    noinline
#    nonnull
#    noreturn
#    nothrow
#    optimize
#    pure
#    unused
#    used
#    visibility
#    warning
#    warn_unused_result
#    weak
#    weakref
#
#   Unsuppored function attributes will be tested with a prototype returning
#   an int and not accepting any arguments and the result of the check might
#   be wrong or meaningless so use with care.
#
# LICENSE
#
#   Copyright (c) 2013 Gabriele Svelto <gabriele.svelto@gmail.com>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved.  This file is offered as-is, without any
#   warranty.

#serial 3

AC_DEFUN([AX_GCC_FUNC_ATTRIBUTE], [
    AS_VAR_PUSHDEF([ac_var], [ax_cv_have_func_attribute_$1])

    AC_CACHE_CHECK([for __attribute__(($1))], [ac_var], [
        AC_LINK_IFELSE([AC_LANG_PROGRAM([
            m4_case([$1],
                [alias], [
                    int foo( void ) { return 0; }
                    int bar( void ) __attribute__(($1("foo")));
                ],
                [aligned], [
                    int foo( void ) __attribute__(($1(32)));
                ],
                [alloc_size], [
                    void *foo(int a) __attribute__(($1(1)));
                ],
                [always_inline], [
                    inline __attribute__(($1)) int foo( void ) { return 0; }
                ],
                [artificial], [
                    inline __attribute__(($1)) int foo( void ) { return 0; }
                ],
                [cold], [
                    int foo( void ) __attribute__(($1));
                ],
                [const], [
                    int foo( void ) __attribute__(($1));
                ],
                [constructor_priority], [
                    int foo( void ) __attribute__((__constructor__(65535/2)));
                ],
                [constructor], [
                    int foo( void ) __attribute__(($1));
                ],
                [deprecated], [
                    int foo( void ) __attribute__(($1("")));
                ],
                [destructor], [
                    int foo( void ) __attribute__(($1));
                ],
                [dllexport], [
                    __attribute__(($1)) int foo( void ) { return 0; }
                ],
                [dllimport], [
                    int foo( void ) __attribute__(($1));
                ],
                [error], [
                    int foo( void ) __attribute__(($1("")));
                ],
                [externally_visible], [
                    int foo( void ) __attribute__(($1));
                ],
                [flatten], [
                    int foo( void ) __attribute__(($1));
                ],
                [format], [
                    int foo(const char *p, ...) __attribute__(($1(printf, 1, 2)));
                ],
                [format_arg], [
                    char *foo(const char *p) __attribute__(($1(1)));
                ],
                [gnu_inline], [
                    inline __attribute__(($1)) int foo( void ) { return 0; }
                ],
                [hot], [
                    int foo( void ) __attribute__(($1));
                ],
                [ifunc], [
                    int my_foo( void ) { return 0; }
                    static int (*resolve_foo(void))(void) { return my_foo; }
                    int foo( void ) __attribute__(($1("resolve_foo")));
                ],
                [leaf], [
                    __attribute__(($1)) int foo( void ) { return 0; }
                ],
                [malloc], [
                    void *foo( void ) __attribute__(($1));
                ],
                [noclone], [
                    int foo( void ) __attribute__(($1));
                ],
                [noinline], [
                    __attribute__(($1)) int foo( void ) { return 0; }
                ],
                [nonnull], [
                    int foo(char *p) __attribute__(($1(1)));
                ],
                [noreturn], [
                    void foo( void ) __attribute__(($1));
                ],
                [nothrow], [
                    int foo( void ) __attribute__(($1));
                ],
                [optimize], [
                    __attribute__(($1(3))) int foo( void ) { return 0; }
                ],
                [pure], [
                    int foo( void ) __attribute__(($1));
                ],
                [unused], [
                    int foo( void ) __attribute__(($1));
                ],
                [used], [
                    int foo( void ) __attribute__(($1));
                ],
                [visibility], [
                    int foo_def( void ) __attribute__(($1("default")));
                    int foo_hid( void ) __attribute__(($1("hidden")));
                    int foo_int( void ) __attribute__(($1("internal")));
                    int foo_pro( void ) __attribute__(($1("protected")));
                ],
                [warning], [
                    int foo( void ) __attribute__(($1("")));
                ],
                [warn_unused_result], [
                    int foo( void ) __attribute__(($1));
                ],
                [weak], [
                    int foo( void ) __attribute__(($1));
                ],
                [weakref], [
                    static int foo( void ) { return 0; }
                    static int bar( void ) __attribute__(($1("foo")));
                ],
                [
                 m4_warn([syntax], [Unsupported attribute $1, the test may fail])
                 int foo( void ) __attribute__(($1));
                ]
            )], [])
            ],
            dnl GCC doesn't exit with an error if an unknown attribute is
            dnl provided but only outputs a warning, so accept the attribute
            dnl only if no warning were issued.
            [AS_IF([test -s conftest.err],
                [AS_VAR_SET([ac_var], [no])],
                [AS_VAR_SET([ac_var], [yes])])],
            [AS_VAR_SET([ac_var], [no])])
    ])

    AS_IF([test yes = AS_VAR_GET([ac_var])],
        [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_FUNC_ATTRIBUTE_$1), 1,
            [Define to 1 if the system has the `$1' function attribute])], [])

    AS_VAR_POPDEF([ac_var])
])

# ===========================================================================
#        http://www.gnu.org/software/autoconf-archive/ax_pthread.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
#
# DESCRIPTION
#
#   This macro figures out how to build C programs using POSIX threads. It
#   sets the PTHREAD_LIBS output variable to the threads library and linker
#   flags, and the PTHREAD_CFLAGS output variable to any special C compiler
#   flags that are needed. (The user can also force certain compiler
#   flags/libs to be tested by setting these environment variables.)
#
#   Also sets PTHREAD_CC to any special C compiler that is needed for
#   multi-threaded programs (defaults to the value of CC otherwise). (This
#   is necessary on AIX to use the special cc_r compiler alias.)
#
#   NOTE: You are assumed to not only compile your program with these flags,
#   but also to link with them as well. For example, you might link with
#   $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
#
#   If you are only building threaded programs, you may wish to use these
#   variables in your default LIBS, CFLAGS, and CC:
#
#     LIBS="$PTHREAD_LIBS $LIBS"
#     CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
#     CC="$PTHREAD_CC"
#
#   In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
#   has a nonstandard name, this macro defines PTHREAD_CREATE_JOINABLE to
#   that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
#
#   Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the
#   PTHREAD_PRIO_INHERIT symbol is defined when compiling with
#   PTHREAD_CFLAGS.
#
#   ACTION-IF-FOUND is a list of shell commands to run if a threads library
#   is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it
#   is not found. If ACTION-IF-FOUND is not specified, the default action
#   will define HAVE_PTHREAD.
#
#   Please let the authors know if this macro fails on any platform, or if
#   you have any other suggestions or comments. This macro was based on work
#   by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help
#   from M. Frigo), as well as ac_pthread and hb_pthread macros posted by
#   Alejandro Forero Cuervo to the autoconf macro repository. We are also
#   grateful for the helpful feedback of numerous users.
#
#   Updated for Autoconf 2.68 by Daniel Richard G.
#
# LICENSE
#
#   Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
#   Copyright (c) 2011 Daniel Richard G. <skunk@iSKUNK.ORG>
#
#   This program is free software: you can redistribute it and/or modify it
#   under the terms of the GNU General Public License as published by the
#   Free Software Foundation, either version 3 of the License, or (at your
#   option) any later version.
#
#   This program is distributed in the hope that it will be useful, but
#   WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
#   Public License for more details.
#
#   You should have received a copy of the GNU General Public License along
#   with this program. If not, see <http://www.gnu.org/licenses/>.
#
#   As a special exception, the respective Autoconf Macro's copyright owner
#   gives unlimited permission to copy, distribute and modify the configure
#   scripts that are the output of Autoconf when processing the Macro. You
#   need not follow the terms of the GNU General Public License when using
#   or distributing such scripts, even though portions of the text of the
#   Macro appear in them. The GNU General Public License (GPL) does govern
#   all other use of the material that constitutes the Autoconf Macro.
#
#   This special exception to the GPL applies to versions of the Autoconf
#   Macro released by the Autoconf Archive. When you make and distribute a
#   modified version of the Autoconf Macro, you may extend this special
#   exception to the GPL to apply to your modified version as well.

#serial 23

AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
AC_DEFUN([AX_PTHREAD], [
AC_REQUIRE([AC_CANONICAL_HOST])
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_PROG_SED])
AC_LANG_PUSH([C])
ax_pthread_ok=no

# We used to check for pthread.h first, but this fails if pthread.h
# requires special compiler flags (e.g. on Tru64 or Sequent).
# It gets checked for in the link test anyway.

# First of all, check if the user has set any of the PTHREAD_LIBS,
# etcetera environment variables, and if threads linking works using
# them:
if test "x$PTHREAD_CFLAGS$PTHREAD_LIBS" != "x"; then
        ax_pthread_save_CC="$CC"
        ax_pthread_save_CFLAGS="$CFLAGS"
        ax_pthread_save_LIBS="$LIBS"
        AS_IF([test "x$PTHREAD_CC" != "x"], [CC="$PTHREAD_CC"])
        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
        LIBS="$PTHREAD_LIBS $LIBS"
        AC_MSG_CHECKING([for pthread_join using $CC $PTHREAD_CFLAGS $PTHREAD_LIBS])
        AC_LINK_IFELSE([AC_LANG_CALL([], [pthread_join])], [ax_pthread_ok=yes])
        AC_MSG_RESULT([$ax_pthread_ok])
        if test "x$ax_pthread_ok" = "xno"; then
                PTHREAD_LIBS=""
                PTHREAD_CFLAGS=""
        fi
        CC="$ax_pthread_save_CC"
        CFLAGS="$ax_pthread_save_CFLAGS"
        LIBS="$ax_pthread_save_LIBS"
fi

# We must check for the threads library under a number of different
# names; the ordering is very important because some systems
# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
# libraries is broken (non-POSIX).

# Create a list of thread flags to try.  Items starting with a "-" are
# C compiler flags, and other items are library names, except for "none"
# which indicates that we try without any flags at all, and "pthread-config"
# which is a program returning the flags for the Pth emulation library.

ax_pthread_flags="pthreads none -Kthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"

# The ordering *is* (sometimes) important.  Some notes on the
# individual items follow:

# pthreads: AIX (must check this before -lpthread)
# none: in case threads are in libc; should be tried before -Kthread and
#       other compiler flags to prevent continual compiler warnings
# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads), Tru64
#           (Note: HP C rejects this with "bad form for `-t' option")
# -pthreads: Solaris/gcc (Note: HP C also rejects)
# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
#      doesn't hurt to check since this sometimes defines pthreads and
#      -D_REENTRANT too), HP C (must be checked before -lpthread, which
#      is present but should not be used directly; and before -mthreads,
#      because the compiler interprets this as "-mt" + "-hreads")
# -mthreads: Mingw32/gcc, Lynx/gcc
# pthread: Linux, etcetera
# --thread-safe: KAI C++
# pthread-config: use pthread-config program (for GNU Pth library)

case $host_os in

        freebsd*)

        # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
        # lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)

        ax_pthread_flags="-kthread lthread $ax_pthread_flags"
        ;;

        hpux*)

        # From the cc(1) man page: "[-mt] Sets various -D flags to enable
        # multi-threading and also sets -lpthread."

        ax_pthread_flags="-mt -pthread pthread $ax_pthread_flags"
        ;;

        openedition*)

        # IBM z/OS requires a feature-test macro to be defined in order to
        # enable POSIX threads at all, so give the user a hint if this is
        # not set. (We don't define these ourselves, as they can affect
        # other portions of the system API in unpredictable ways.)

        AC_EGREP_CPP([AX_PTHREAD_ZOS_MISSING],
            [
#            if !defined(_OPEN_THREADS) && !defined(_UNIX03_THREADS)
             AX_PTHREAD_ZOS_MISSING
#            endif
            ],
            [AC_MSG_WARN([IBM z/OS requires -D_OPEN_THREADS or -D_UNIX03_THREADS to enable pthreads support.])])
        ;;

        solaris*)

        # On Solaris (at least, for some versions), libc contains stubbed
        # (non-functional) versions of the pthreads routines, so link-based
        # tests will erroneously succeed. (N.B.: The stubs are missing
        # pthread_cleanup_push, or rather a function called by this macro,
        # so we could check for that, but who knows whether they'll stub
        # that too in a future libc.)  So we'll check first for the
        # standard Solaris way of linking pthreads (-mt -lpthread).

        ax_pthread_flags="-mt,pthread pthread $ax_pthread_flags"
        ;;
esac

# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC)

AS_IF([test "x$GCC" = "xyes"],
      [ax_pthread_flags="-pthread -pthreads $ax_pthread_flags"])

# The presence of a feature test macro requesting re-entrant function
# definitions is, on some systems, a strong hint that pthreads support is
# correctly enabled

case $host_os in
        darwin* | hpux* | linux* | osf* | solaris*)
        ax_pthread_check_macro="_REENTRANT"
        ;;

        aix*)
        ax_pthread_check_macro="_THREAD_SAFE"
        ;;

        *)
        ax_pthread_check_macro="--"
        ;;
esac
AS_IF([test "x$ax_pthread_check_macro" = "x--"],
      [ax_pthread_check_cond=0],
      [ax_pthread_check_cond="!defined($ax_pthread_check_macro)"])

# Are we compiling with Clang?

AC_CACHE_CHECK([whether $CC is Clang],
    [ax_cv_PTHREAD_CLANG],
    [ax_cv_PTHREAD_CLANG=no
     # Note that Autoconf sets GCC=yes for Clang as well as GCC
     if test "x$GCC" = "xyes"; then
        AC_EGREP_CPP([AX_PTHREAD_CC_IS_CLANG],
            [/* Note: Clang 2.7 lacks __clang_[a-z]+__ */
#            if defined(__clang__) && defined(__llvm__)
             AX_PTHREAD_CC_IS_CLANG
#            endif
            ],
            [ax_cv_PTHREAD_CLANG=yes])
     fi
    ])
ax_pthread_clang="$ax_cv_PTHREAD_CLANG"

ax_pthread_clang_warning=no

# Clang needs special handling, because older versions handle the -pthread
# option in a rather... idiosyncratic way

if test "x$ax_pthread_clang" = "xyes"; then

        # Clang takes -pthread; it has never supported any other flag

        # (Note 1: This will need to be revisited if a system that Clang
        # supports has POSIX threads in a separate library.  This tends not
        # to be the way of modern systems, but it's conceivable.)

        # (Note 2: On some systems, notably Darwin, -pthread is not needed
        # to get POSIX threads support; the API is always present and
        # active.  We could reasonably leave PTHREAD_CFLAGS empty.  But
        # -pthread does define _REENTRANT, and while the Darwin headers
        # ignore this macro, third-party headers might not.)

        PTHREAD_CFLAGS="-pthread"
        PTHREAD_LIBS=

        ax_pthread_ok=yes

        # However, older versions of Clang make a point of warning the user
        # that, in an invocation where only linking and no compilation is
        # taking place, the -pthread option has no effect ("argument unused
        # during compilation").  They expect -pthread to be passed in only
        # when source code is being compiled.
        #
        # Problem is, this is at odds with the way Automake and most other
        # C build frameworks function, which is that the same flags used in
        # compilation (CFLAGS) are also used in linking.  Many systems
        # supported by AX_PTHREAD require exactly this for POSIX threads
        # support, and in fact it is often not straightforward to specify a
        # flag that is used only in the compilation phase and not in
        # linking.  Such a scenario is extremely rare in practice.
        #
        # Even though use of the -pthread flag in linking would only print
        # a warning, this can be a nuisance for well-run software projects
        # that build with -Werror.  So if the active version of Clang has
        # this misfeature, we search for an option to squash it.

        AC_CACHE_CHECK([whether Clang needs flag to prevent "argument unused" warning when linking with -pthread],
            [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG],
            [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG=unknown
             # Create an alternate version of $ac_link that compiles and
             # links in two steps (.c -> .o, .o -> exe) instead of one
             # (.c -> exe), because the warning occurs only in the second
             # step
             ax_pthread_save_ac_link="$ac_link"
             ax_pthread_sed='s/conftest\.\$ac_ext/conftest.$ac_objext/g'
             ax_pthread_link_step=`$as_echo "$ac_link" | sed "$ax_pthread_sed"`
             ax_pthread_2step_ac_link="($ac_compile) && (echo ==== >&5) && ($ax_pthread_link_step)"
             ax_pthread_save_CFLAGS="$CFLAGS"
             for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do
                AS_IF([test "x$ax_pthread_try" = "xunknown"], [break])
                CFLAGS="-Werror -Wunknown-warning-option $ax_pthread_try -pthread $ax_pthread_save_CFLAGS"
                ac_link="$ax_pthread_save_ac_link"
                AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
                    [ac_link="$ax_pthread_2step_ac_link"
                     AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
                         [break])
                    ])
             done
             ac_link="$ax_pthread_save_ac_link"
             CFLAGS="$ax_pthread_save_CFLAGS"
             AS_IF([test "x$ax_pthread_try" = "x"], [ax_pthread_try=no])
             ax_cv_PTHREAD_CLANG_NO_WARN_FLAG="$ax_pthread_try"
            ])

        case "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" in
                no | unknown) ;;
                *) PTHREAD_CFLAGS="$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG $PTHREAD_CFLAGS" ;;
        esac

fi # $ax_pthread_clang = yes

if test "x$ax_pthread_ok" = "xno"; then
for ax_pthread_try_flag in $ax_pthread_flags; do

        case $ax_pthread_try_flag in
                none)
                AC_MSG_CHECKING([whether pthreads work without any flags])
                ;;

                -mt,pthread)
                AC_MSG_CHECKING([whether pthreads work with -mt -lpthread])
                PTHREAD_CFLAGS="-mt"
                PTHREAD_LIBS="-lpthread"
                ;;

                -*)
                AC_MSG_CHECKING([whether pthreads work with $ax_pthread_try_flag])
                PTHREAD_CFLAGS="$ax_pthread_try_flag"
                ;;

                pthread-config)
                AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no])
                AS_IF([test "x$ax_pthread_config" = "xno"], [continue])
                PTHREAD_CFLAGS="`pthread-config --cflags`"
                PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
                ;;

                *)
                AC_MSG_CHECKING([for the pthreads library -l$ax_pthread_try_flag])
                PTHREAD_LIBS="-l$ax_pthread_try_flag"
                ;;
        esac

        ax_pthread_save_CFLAGS="$CFLAGS"
        ax_pthread_save_LIBS="$LIBS"
        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
        LIBS="$PTHREAD_LIBS $LIBS"

        # Check for various functions.  We must include pthread.h,
        # since some functions may be macros.  (On the Sequent, we
        # need a special flag -Kthread to make this header compile.)
        # We check for pthread_join because it is in -lpthread on IRIX
        # while pthread_create is in libc.  We check for pthread_attr_init
        # due to DEC craziness with -lpthreads.  We check for
        # pthread_cleanup_push because it is one of the few pthread
        # functions on Solaris that doesn't have a non-functional libc stub.
        # We try pthread_create on general principles.

        AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>
#                       if $ax_pthread_check_cond
#                        error "$ax_pthread_check_macro must be defined"
#                       endif
                        static void routine(void *a) { a = 0; }
                        static void *start_routine(void *a) { return a; }],
                       [pthread_t th; pthread_attr_t attr;
                        pthread_create(&th, 0, start_routine, 0);
                        pthread_join(th, 0);
                        pthread_attr_init(&attr);
                        pthread_cleanup_push(routine, 0);
                        pthread_cleanup_pop(0) /* ; */])],
            [ax_pthread_ok=yes],
            [])

        CFLAGS="$ax_pthread_save_CFLAGS"
        LIBS="$ax_pthread_save_LIBS"

        AC_MSG_RESULT([$ax_pthread_ok])
        AS_IF([test "x$ax_pthread_ok" = "xyes"], [break])

        PTHREAD_LIBS=""
        PTHREAD_CFLAGS=""
done
fi

# Various other checks:
if test "x$ax_pthread_ok" = "xyes"; then
        ax_pthread_save_CFLAGS="$CFLAGS"
        ax_pthread_save_LIBS="$LIBS"
        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
        LIBS="$PTHREAD_LIBS $LIBS"

        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
        AC_CACHE_CHECK([for joinable pthread attribute],
            [ax_cv_PTHREAD_JOINABLE_ATTR],
            [ax_cv_PTHREAD_JOINABLE_ATTR=unknown
             for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
                 AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
                                                 [int attr = $ax_pthread_attr; return attr /* ; */])],
                                [ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break],
                                [])
             done
            ])
        AS_IF([test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xunknown" && \
               test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xPTHREAD_CREATE_JOINABLE" && \
               test "x$ax_pthread_joinable_attr_defined" != "xyes"],
              [AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE],
                                  [$ax_cv_PTHREAD_JOINABLE_ATTR],
                                  [Define to necessary symbol if this constant
                                   uses a non-standard name on your system.])
               ax_pthread_joinable_attr_defined=yes
              ])

        AC_CACHE_CHECK([whether more special flags are required for pthreads],
            [ax_cv_PTHREAD_SPECIAL_FLAGS],
            [ax_cv_PTHREAD_SPECIAL_FLAGS=no
             case $host_os in
             solaris*)
             ax_cv_PTHREAD_SPECIAL_FLAGS="-D_POSIX_PTHREAD_SEMANTICS"
             ;;
             esac
            ])
        AS_IF([test "x$ax_cv_PTHREAD_SPECIAL_FLAGS" != "xno" && \
               test "x$ax_pthread_special_flags_added" != "xyes"],
              [PTHREAD_CFLAGS="$ax_cv_PTHREAD_SPECIAL_FLAGS $PTHREAD_CFLAGS"
               ax_pthread_special_flags_added=yes])

        AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT],
            [ax_cv_PTHREAD_PRIO_INHERIT],
            [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]],
                                             [[int i = PTHREAD_PRIO_INHERIT;]])],
                            [ax_cv_PTHREAD_PRIO_INHERIT=yes],
                            [ax_cv_PTHREAD_PRIO_INHERIT=no])
            ])
        AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \
               test "x$ax_pthread_prio_inherit_defined" != "xyes"],
              [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])
               ax_pthread_prio_inherit_defined=yes
              ])

        CFLAGS="$ax_pthread_save_CFLAGS"
        LIBS="$ax_pthread_save_LIBS"

        # More AIX lossage: compile with *_r variant
        if test "x$GCC" != "xyes"; then
            case $host_os in
                aix*)
                AS_CASE(["x/$CC"],
                    [x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6],
                    [#handle absolute path differently from PATH based program lookup
                     AS_CASE(["x$CC"],
                         [x/*],
                         [AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])],
                         [AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])])
                ;;
            esac
        fi
fi

test -n "$PTHREAD_CC" || PTHREAD_CC="$CC"

AC_SUBST([PTHREAD_LIBS])
AC_SUBST([PTHREAD_CFLAGS])
AC_SUBST([PTHREAD_CC])

# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
if test "x$ax_pthread_ok" = "xyes"; then
        ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1])
        :
else
        ax_pthread_ok=no
        $2
fi
AC_LANG_POP
])dnl AX_PTHREAD

dnl Copyright (c) 2013-2015 The Bitcoin Core developers
dnl Distributed under the MIT software license, see the accompanying
dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.

AC_DEFUN([BITCOIN_FIND_BDB48],[
  AC_ARG_VAR(BDB_CFLAGS, [C compiler flags for BerkeleyDB, bypasses autodetection])
  AC_ARG_VAR(BDB_LIBS, [Linker flags for BerkeleyDB, bypasses autodetection])

  if test "x$BDB_CFLAGS" = "x"; then
    AC_MSG_CHECKING([for Berkeley DB C++ headers])
    BDB_CPPFLAGS=
    bdbpath=X
    bdb48path=X
    bdbdirlist=
    for _vn in 4.8 48 4 5 5.3 ''; do
      for _pfx in b lib ''; do
        bdbdirlist="$bdbdirlist ${_pfx}db${_vn}"
      done
    done
    for searchpath in $bdbdirlist ''; do
      test -n "${searchpath}" && searchpath="${searchpath}/"
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
        #include <${searchpath}db_cxx.h>
      ]],[[
        #if !((DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 8) || DB_VERSION_MAJOR > 4)
          #error "failed to find bdb 4.8+"
        #endif
      ]])],[
        if test "x$bdbpath" = "xX"; then
          bdbpath="${searchpath}"
        fi
      ],[
        continue
      ])
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
        #include <${searchpath}db_cxx.h>
      ]],[[
        #if !(DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR == 8)
          #error "failed to find bdb 4.8"
        #endif
      ]])],[
        bdb48path="${searchpath}"
        break
      ],[])
    done
    if test "x$bdbpath" = "xX"; then
      AC_MSG_RESULT([no])
      AC_MSG_ERROR([libdb_cxx headers missing, ]AC_PACKAGE_NAME[ requires this library for wallet functionality (--disable-wallet to disable wallet functionality)])
    elif test "x$bdb48path" = "xX"; then
      BITCOIN_SUBDIR_TO_INCLUDE(BDB_CPPFLAGS,[${bdbpath}],db_cxx)
      AC_ARG_WITH([incompatible-bdb],[AS_HELP_STRING([--with-incompatible-bdb], [allow using a bdb version other than 4.8])],[
        AC_MSG_WARN([Found Berkeley DB other than 4.8; wallets opened by this build will not be portable!])
      ],[
        AC_MSG_ERROR([Found Berkeley DB other than 4.8, required for portable wallets (--with-incompatible-bdb to ignore or --disable-wallet to disable wallet functionality)])
      ])
    else
      BITCOIN_SUBDIR_TO_INCLUDE(BDB_CPPFLAGS,[${bdb48path}],db_cxx)
      bdbpath="${bdb48path}"
    fi
  else
    BDB_CPPFLAGS=${BDB_CFLAGS}
  fi
  AC_SUBST(BDB_CPPFLAGS)
  
  if test "x$BDB_LIBS" = "x"; then
    # TODO: Ideally this could find the library version and make sure it matches the headers being used
    for searchlib in db_cxx-4.8 db_cxx; do
      AC_CHECK_LIB([$searchlib],[main],[
        BDB_LIBS="-l${searchlib}"
        break
      ])
    done
    if test "x$BDB_LIBS" = "x"; then
        AC_MSG_ERROR([libdb_cxx missing, ]AC_PACKAGE_NAME[ requires this library for wallet functionality (--disable-wallet to disable wallet functionality)])
    fi
  fi
  AC_SUBST(BDB_LIBS)
])

dnl Copyright (c) 2013-2016 The Bitcoin Core developers
dnl Distributed under the MIT software license, see the accompanying
dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.

dnl Helper for cases where a qt dependency is not met.
dnl Output: If qt version is auto, set bitcoin_enable_qt to false. Else, exit.
AC_DEFUN([BITCOIN_QT_FAIL],[
  if test "x$bitcoin_qt_want_version" = "xauto" && test x$bitcoin_qt_force != xyes; then
    if test x$bitcoin_enable_qt != xno; then
      AC_MSG_WARN([$1; bitcoin-qt frontend will not be built])
    fi
    bitcoin_enable_qt=no
    bitcoin_enable_qt_test=no
  else
    AC_MSG_ERROR([$1])
  fi
])

AC_DEFUN([BITCOIN_QT_CHECK],[
  if test "x$bitcoin_enable_qt" != "xno" && test x$bitcoin_qt_want_version != xno; then
    true
    $1
  else
    true
    $2
  fi
])

dnl BITCOIN_QT_PATH_PROGS([FOO], [foo foo2], [/path/to/search/first], [continue if missing])
dnl Helper for finding the path of programs needed for Qt.
dnl Inputs: $1: Variable to be set
dnl Inputs: $2: List of programs to search for
dnl Inputs: $3: Look for $2 here before $PATH
dnl Inputs: $4: If "yes", don't fail if $2 is not found.
dnl Output: $1 is set to the path of $2 if found. $2 are searched in order.
AC_DEFUN([BITCOIN_QT_PATH_PROGS],[
  BITCOIN_QT_CHECK([
    if test "x$3" != "x"; then
      AC_PATH_PROGS($1,$2,,$3)
    else
      AC_PATH_PROGS($1,$2)
    fi
    if test "x$$1" = "x" && test "x$4" != "xyes"; then
      BITCOIN_QT_FAIL([$1 not found])
    fi
  ])
])

dnl Initialize qt input.
dnl This must be called before any other BITCOIN_QT* macros to ensure that
dnl input variables are set correctly.
dnl CAUTION: Do not use this inside of a conditional.
AC_DEFUN([BITCOIN_QT_INIT],[
  dnl enable qt support
  AC_ARG_WITH([gui],
    [AS_HELP_STRING([--with-gui@<:@=no|qt4|qt5|auto@:>@],
    [build bitcoin-qt GUI (default=auto, qt5 tried first)])],
    [
     bitcoin_qt_want_version=$withval
     if test x$bitcoin_qt_want_version = xyes; then
       bitcoin_qt_force=yes
       bitcoin_qt_want_version=auto
     fi
    ],
    [bitcoin_qt_want_version=auto])

  AC_ARG_WITH([qt-incdir],[AS_HELP_STRING([--with-qt-incdir=INC_DIR],[specify qt include path (overridden by pkgconfig)])], [qt_include_path=$withval], [])
  AC_ARG_WITH([qt-libdir],[AS_HELP_STRING([--with-qt-libdir=LIB_DIR],[specify qt lib path (overridden by pkgconfig)])], [qt_lib_path=$withval], [])
  AC_ARG_WITH([qt-plugindir],[AS_HELP_STRING([--with-qt-plugindir=PLUGIN_DIR],[specify qt plugin path (overridden by pkgconfig)])], [qt_plugin_path=$withval], [])
  AC_ARG_WITH([qt-translationdir],[AS_HELP_STRING([--with-qt-translationdir=PLUGIN_DIR],[specify qt translation path (overridden by pkgconfig)])], [qt_translation_path=$withval], [])
  AC_ARG_WITH([qt-bindir],[AS_HELP_STRING([--with-qt-bindir=BIN_DIR],[specify qt bin path])], [qt_bin_path=$withval], [])

  AC_ARG_WITH([qtdbus],
    [AS_HELP_STRING([--with-qtdbus],
    [enable DBus support (default is yes if qt is enabled and QtDBus is found)])],
    [use_dbus=$withval],
    [use_dbus=auto])

  AC_SUBST(QT_TRANSLATION_DIR,$qt_translation_path)
])

dnl Find the appropriate version of Qt libraries and includes.
dnl Inputs: $1: Whether or not pkg-config should be used. yes|no. Default: yes.
dnl Inputs: $2: If $1 is "yes" and --with-gui=auto, which qt version should be
dnl         tried first.
dnl Outputs: See _BITCOIN_QT_FIND_LIBS_*
dnl Outputs: Sets variables for all qt-related tools.
dnl Outputs: bitcoin_enable_qt, bitcoin_enable_qt_dbus, bitcoin_enable_qt_test
AC_DEFUN([BITCOIN_QT_CONFIGURE],[
  use_pkgconfig=$1

  if test x$use_pkgconfig = x; then
    use_pkgconfig=yes
  fi

  if test x$use_pkgconfig = xyes; then
    BITCOIN_QT_CHECK([_BITCOIN_QT_FIND_LIBS_WITH_PKGCONFIG([$2])])
  else
    BITCOIN_QT_CHECK([_BITCOIN_QT_FIND_LIBS_WITHOUT_PKGCONFIG])
  fi

  dnl This is ugly and complicated. Yuck. Works as follows:
  dnl We can't discern whether Qt4 builds are static or not. For Qt5, we can
  dnl check a header to find out. When Qt is built statically, some plugins must
  dnl be linked into the final binary as well. These plugins have changed between
  dnl Qt4 and Qt5. With Qt5, languages moved into core and the WindowsIntegration
  dnl plugin was added. Since we can't tell if Qt4 is static or not, it is
  dnl assumed for windows builds.
  dnl _BITCOIN_QT_CHECK_STATIC_PLUGINS does a quick link-check and appends the
  dnl results to QT_LIBS.
  BITCOIN_QT_CHECK([
  TEMP_CPPFLAGS=$CPPFLAGS
  TEMP_CXXFLAGS=$CXXFLAGS
  CPPFLAGS="$QT_INCLUDES $CPPFLAGS"
  CXXFLAGS="$PIC_FLAGS $CXXFLAGS"
  if test x$bitcoin_qt_got_major_vers = x5; then
    _BITCOIN_QT_IS_STATIC
    if test x$bitcoin_cv_static_qt = xyes; then
      _BITCOIN_QT_FIND_STATIC_PLUGINS
      AC_DEFINE(QT_STATICPLUGIN, 1, [Define this symbol if qt plugins are static])
      AC_CACHE_CHECK(for Qt < 5.4, bitcoin_cv_need_acc_widget,[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
          [[#include <QtCore>]],[[
          #if QT_VERSION >= 0x050400
          choke;
          #endif
          ]])],
        [bitcoin_cv_need_acc_widget=yes],
        [bitcoin_cv_need_acc_widget=no])
      ])
      if test "x$bitcoin_cv_need_acc_widget" = "xyes"; then
        _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(AccessibleFactory)], [-lqtaccessiblewidgets])
      fi
      _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(QMinimalIntegrationPlugin)],[-lqminimal])
      AC_DEFINE(QT_QPA_PLATFORM_MINIMAL, 1, [Define this symbol if the minimal qt platform exists])
      if test x$TARGET_OS = xwindows; then
        _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(QWindowsIntegrationPlugin)],[-lqwindows])
        AC_DEFINE(QT_QPA_PLATFORM_WINDOWS, 1, [Define this symbol if the qt platform is windows])
      elif test x$TARGET_OS = xlinux; then
        _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(QXcbIntegrationPlugin)],[-lqxcb -lxcb-static])
        AC_DEFINE(QT_QPA_PLATFORM_XCB, 1, [Define this symbol if the qt platform is xcb])
      elif test x$TARGET_OS = xdarwin; then
        AX_CHECK_LINK_FLAG([[-framework IOKit]],[QT_LIBS="$QT_LIBS -framework IOKit"],[AC_MSG_ERROR(could not iokit framework)])
        _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(QCocoaIntegrationPlugin)],[-lqcocoa])
        AC_DEFINE(QT_QPA_PLATFORM_COCOA, 1, [Define this symbol if the qt platform is cocoa])
      fi
    fi
  else
    if test x$TARGET_OS = xwindows; then
      AC_DEFINE(QT_STATICPLUGIN, 1, [Define this symbol if qt plugins are static])
      _BITCOIN_QT_CHECK_STATIC_PLUGINS([
         Q_IMPORT_PLUGIN(qcncodecs)
         Q_IMPORT_PLUGIN(qjpcodecs)
         Q_IMPORT_PLUGIN(qtwcodecs)
         Q_IMPORT_PLUGIN(qkrcodecs)
         Q_IMPORT_PLUGIN(AccessibleFactory)],
         [-lqcncodecs -lqjpcodecs -lqtwcodecs -lqkrcodecs -lqtaccessiblewidgets])
    fi
  fi
  CPPFLAGS=$TEMP_CPPFLAGS
  CXXFLAGS=$TEMP_CXXFLAGS
  ])

  if test x$use_pkgconfig$qt_bin_path = xyes; then
    if test x$bitcoin_qt_got_major_vers = x5; then
      qt_bin_path="`$PKG_CONFIG --variable=host_bins Qt5Core 2>/dev/null`"
    fi
  fi

  if test x$use_hardening != xno; then
    BITCOIN_QT_CHECK([
    AC_MSG_CHECKING(whether -fPIE can be used with this Qt config)
    TEMP_CPPFLAGS=$CPPFLAGS
    TEMP_CXXFLAGS=$CXXFLAGS
    CPPFLAGS="$QT_INCLUDES $CPPFLAGS"
    CXXFLAGS="$PIE_FLAGS $CXXFLAGS"
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <QtCore/qconfig.h>]],
      [[
          #if defined(QT_REDUCE_RELOCATIONS)
              choke;
          #endif
      ]])],
      [ AC_MSG_RESULT(yes); QT_PIE_FLAGS=$PIE_FLAGS ],
      [ AC_MSG_RESULT(no); QT_PIE_FLAGS=$PIC_FLAGS]
    )
    CPPFLAGS=$TEMP_CPPFLAGS
    CXXFLAGS=$TEMP_CXXFLAGS
    ])
  else
    BITCOIN_QT_CHECK([
    AC_MSG_CHECKING(whether -fPIC is needed with this Qt config)
    TEMP_CPPFLAGS=$CPPFLAGS
    CPPFLAGS="$QT_INCLUDES $CPPFLAGS"
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <QtCore/qconfig.h>]],
      [[
          #if defined(QT_REDUCE_RELOCATIONS)
              choke;
          #endif
      ]])],
      [ AC_MSG_RESULT(no)],
      [ AC_MSG_RESULT(yes); QT_PIE_FLAGS=$PIC_FLAGS]
    )
    CPPFLAGS=$TEMP_CPPFLAGS
    ])
  fi

  BITCOIN_QT_PATH_PROGS([MOC], [moc-qt${bitcoin_qt_got_major_vers} moc${bitcoin_qt_got_major_vers} moc], $qt_bin_path)
  BITCOIN_QT_PATH_PROGS([UIC], [uic-qt${bitcoin_qt_got_major_vers} uic${bitcoin_qt_got_major_vers} uic], $qt_bin_path)
  BITCOIN_QT_PATH_PROGS([RCC], [rcc-qt${bitcoin_qt_got_major_vers} rcc${bitcoin_qt_got_major_vers} rcc], $qt_bin_path)
  BITCOIN_QT_PATH_PROGS([LRELEASE], [lrelease-qt${bitcoin_qt_got_major_vers} lrelease${bitcoin_qt_got_major_vers} lrelease], $qt_bin_path)
  BITCOIN_QT_PATH_PROGS([LUPDATE], [lupdate-qt${bitcoin_qt_got_major_vers} lupdate${bitcoin_qt_got_major_vers} lupdate],$qt_bin_path, yes)

  MOC_DEFS='-DHAVE_CONFIG_H -I$(srcdir)'
  case $host in
    *darwin*)
     BITCOIN_QT_CHECK([
       MOC_DEFS="${MOC_DEFS} -DQ_OS_MAC"
       base_frameworks="-framework Foundation -framework ApplicationServices -framework AppKit"
       AX_CHECK_LINK_FLAG([[$base_frameworks]],[QT_LIBS="$QT_LIBS $base_frameworks"],[AC_MSG_ERROR(could not find base frameworks)])
     ])
    ;;
    *mingw*)
       BITCOIN_QT_CHECK([
         AX_CHECK_LINK_FLAG([[-mwindows]],[QT_LDFLAGS="$QT_LDFLAGS -mwindows"],[AC_MSG_WARN(-mwindows linker support not detected)])
       ])
  esac


  dnl enable qt support
  AC_MSG_CHECKING(whether to build ]AC_PACKAGE_NAME[ GUI)
  BITCOIN_QT_CHECK([
    bitcoin_enable_qt=yes
    bitcoin_enable_qt_test=yes
    if test x$have_qt_test = xno; then
      bitcoin_enable_qt_test=no
    fi
    bitcoin_enable_qt_dbus=no
    if test x$use_dbus != xno && test x$have_qt_dbus = xyes; then
      bitcoin_enable_qt_dbus=yes
    fi
    if test x$use_dbus = xyes && test x$have_qt_dbus = xno; then
      AC_MSG_ERROR("libQtDBus not found. Install libQtDBus or remove --with-qtdbus.")
    fi
    if test x$LUPDATE = x; then
      AC_MSG_WARN("lupdate is required to update qt translations")
    fi
  ],[
    bitcoin_enable_qt=no
  ])
  AC_MSG_RESULT([$bitcoin_enable_qt (Qt${bitcoin_qt_got_major_vers})])

  AC_SUBST(QT_PIE_FLAGS)
  AC_SUBST(QT_INCLUDES)
  AC_SUBST(QT_LIBS)
  AC_SUBST(QT_LDFLAGS)
  AC_SUBST(QT_DBUS_INCLUDES)
  AC_SUBST(QT_DBUS_LIBS)
  AC_SUBST(QT_TEST_INCLUDES)
  AC_SUBST(QT_TEST_LIBS)
  AC_SUBST(QT_SELECT, qt${bitcoin_qt_got_major_vers})
  AC_SUBST(MOC_DEFS)
])

dnl All macros below are internal and should _not_ be used from the main
dnl configure.ac.
dnl ----

dnl Internal. Check if the included version of Qt is Qt5.
dnl Requires: INCLUDES must be populated as necessary.
dnl Output: bitcoin_cv_qt5=yes|no
AC_DEFUN([_BITCOIN_QT_CHECK_QT5],[
  AC_CACHE_CHECK(for Qt 5, bitcoin_cv_qt5,[
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
    [[#include <QtCore>]],
    [[
      #if QT_VERSION < 0x050000
      choke me
      #else
      return 0;
      #endif
    ]])],
    [bitcoin_cv_qt5=yes],
    [bitcoin_cv_qt5=no])
])])

dnl Internal. Check if the linked version of Qt was built as static libs.
dnl Requires: Qt5. This check cannot determine if Qt4 is static.
dnl Requires: INCLUDES and LIBS must be populated as necessary.
dnl Output: bitcoin_cv_static_qt=yes|no
dnl Output: Defines QT_STATICPLUGIN if plugins are static.
AC_DEFUN([_BITCOIN_QT_IS_STATIC],[
  AC_CACHE_CHECK(for static Qt, bitcoin_cv_static_qt,[
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
    [[#include <QtCore>]],
    [[
      #if defined(QT_STATIC)
      return 0;
      #else
      choke me
      #endif
    ]])],
    [bitcoin_cv_static_qt=yes],
    [bitcoin_cv_static_qt=no])
  ])
  if test xbitcoin_cv_static_qt = xyes; then
    AC_DEFINE(QT_STATICPLUGIN, 1, [Define this symbol for static Qt plugins])
  fi
])

dnl Internal. Check if the link-requirements for static plugins are met.
dnl Requires: INCLUDES and LIBS must be populated as necessary.
dnl Inputs: $1: A series of Q_IMPORT_PLUGIN().
dnl Inputs: $2: The libraries that resolve $1.
dnl Output: QT_LIBS is prepended or configure exits.
AC_DEFUN([_BITCOIN_QT_CHECK_STATIC_PLUGINS],[
  AC_MSG_CHECKING(for static Qt plugins: $2)
  CHECK_STATIC_PLUGINS_TEMP_LIBS="$LIBS"
  LIBS="$2 $QT_LIBS $LIBS"
  AC_LINK_IFELSE([AC_LANG_PROGRAM([[
    #define QT_STATICPLUGIN
    #include <QtPlugin>
    $1]],
    [[return 0;]])],
    [AC_MSG_RESULT(yes); QT_LIBS="$2 $QT_LIBS"],
    [AC_MSG_RESULT(no); BITCOIN_QT_FAIL(Could not resolve: $2)])
  LIBS="$CHECK_STATIC_PLUGINS_TEMP_LIBS"
])

dnl Internal. Find paths necessary for linking qt static plugins
dnl Inputs: bitcoin_qt_got_major_vers. 4 or 5.
dnl Inputs: qt_plugin_path. optional.
dnl Outputs: QT_LIBS is appended
AC_DEFUN([_BITCOIN_QT_FIND_STATIC_PLUGINS],[
  if test x$bitcoin_qt_got_major_vers = x5; then
      if test x$qt_plugin_path != x; then
        QT_LIBS="$QT_LIBS -L$qt_plugin_path/platforms"
        if test -d "$qt_plugin_path/accessible"; then
          QT_LIBS="$QT_LIBS -L$qt_plugin_path/accessible"
        fi
      fi
     if test x$use_pkgconfig = xyes; then
     : dnl
     m4_ifdef([PKG_CHECK_MODULES],[
       PKG_CHECK_MODULES([QTPLATFORM], [Qt5PlatformSupport], [QT_LIBS="$QTPLATFORM_LIBS $QT_LIBS"])
       if test x$TARGET_OS = xlinux; then
         PKG_CHECK_MODULES([X11XCB], [x11-xcb], [QT_LIBS="$X11XCB_LIBS $QT_LIBS"])
         if ${PKG_CONFIG} --exists "Qt5Core >= 5.5" 2>/dev/null; then
           PKG_CHECK_MODULES([QTXCBQPA], [Qt5XcbQpa], [QT_LIBS="$QTXCBQPA_LIBS $QT_LIBS"])
         fi
       elif test x$TARGET_OS = xdarwin; then
         PKG_CHECK_MODULES([QTPRINT], [Qt5PrintSupport], [QT_LIBS="$QTPRINT_LIBS $QT_LIBS"])
       fi
     ])
     else
       if test x$TARGET_OS = xwindows; then
         AC_CACHE_CHECK(for Qt >= 5.6, bitcoin_cv_need_platformsupport,[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
             [[#include <QtCore>]],[[
             #if QT_VERSION < 0x050600
             choke;
             #endif
             ]])],
           [bitcoin_cv_need_platformsupport=yes],
           [bitcoin_cv_need_platformsupport=no])
         ])
         if test x$bitcoin_cv_need_platformsupport = xyes; then
           BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}PlatformSupport],[main],,BITCOIN_QT_FAIL(lib$QT_LIB_PREFIXPlatformSupport not found)))
         fi
       fi
     fi
  else
    if test x$qt_plugin_path != x; then
      QT_LIBS="$QT_LIBS -L$qt_plugin_path/accessible"
      QT_LIBS="$QT_LIBS -L$qt_plugin_path/codecs"
    fi
  fi
])

dnl Internal. Find Qt libraries using pkg-config.
dnl Inputs: bitcoin_qt_want_version (from --with-gui=). The version to check
dnl         first.
dnl Inputs: $1: If bitcoin_qt_want_version is "auto", check for this version
dnl         first.
dnl Outputs: All necessary QT_* variables are set.
dnl Outputs: bitcoin_qt_got_major_vers is set to "4" or "5".
dnl Outputs: have_qt_test and have_qt_dbus are set (if applicable) to yes|no.
AC_DEFUN([_BITCOIN_QT_FIND_LIBS_WITH_PKGCONFIG],[
  m4_ifdef([PKG_CHECK_MODULES],[
  auto_priority_version=$1
  if test x$auto_priority_version = x; then
    auto_priority_version=qt5
  fi
    if test x$bitcoin_qt_want_version = xqt5 ||  ( test x$bitcoin_qt_want_version = xauto && test x$auto_priority_version = xqt5 ); then
      QT_LIB_PREFIX=Qt5
      bitcoin_qt_got_major_vers=5
    else
      QT_LIB_PREFIX=Qt
      bitcoin_qt_got_major_vers=4
    fi
    qt5_modules="Qt5Core Qt5Gui Qt5Network Qt5Widgets"
    qt4_modules="QtCore QtGui QtNetwork"
    BITCOIN_QT_CHECK([
      if test x$bitcoin_qt_want_version = xqt5 || ( test x$bitcoin_qt_want_version = xauto && test x$auto_priority_version = xqt5 ); then
        PKG_CHECK_MODULES([QT5], [$qt5_modules], [QT_INCLUDES="$QT5_CFLAGS"; QT_LIBS="$QT5_LIBS" have_qt=yes],[have_qt=no])
      elif test x$bitcoin_qt_want_version = xqt4 || ( test x$bitcoin_qt_want_version = xauto && test x$auto_priority_version = xqt4 ); then
        PKG_CHECK_MODULES([QT4], [$qt4_modules], [QT_INCLUDES="$QT4_CFLAGS"; QT_LIBS="$QT4_LIBS" ; have_qt=yes], [have_qt=no])
      fi

      dnl qt version is set to 'auto' and the preferred version wasn't found. Now try the other.
      if test x$have_qt = xno && test x$bitcoin_qt_want_version = xauto; then
        if test x$auto_priority_version = xqt5; then
          PKG_CHECK_MODULES([QT4], [$qt4_modules], [QT_INCLUDES="$QT4_CFLAGS"; QT_LIBS="$QT4_LIBS" ; have_qt=yes; QT_LIB_PREFIX=Qt; bitcoin_qt_got_major_vers=4], [have_qt=no])
        else
          PKG_CHECK_MODULES([QT5], [$qt5_modules], [QT_INCLUDES="$QT5_CFLAGS"; QT_LIBS="$QT5_LIBS" ; have_qt=yes; QT_LIB_PREFIX=Qt5; bitcoin_qt_got_major_vers=5], [have_qt=no])
        fi
      fi
      if test x$have_qt != xyes; then
        have_qt=no
        BITCOIN_QT_FAIL([Qt dependencies not found])
      fi
    ])
    BITCOIN_QT_CHECK([
      PKG_CHECK_MODULES([QT_TEST], [${QT_LIB_PREFIX}Test], [QT_TEST_INCLUDES="$QT_TEST_CFLAGS"; have_qt_test=yes], [have_qt_test=no])
      if test x$use_dbus != xno; then
        PKG_CHECK_MODULES([QT_DBUS], [${QT_LIB_PREFIX}DBus], [QT_DBUS_INCLUDES="$QT_DBUS_CFLAGS"; have_qt_dbus=yes], [have_qt_dbus=no])
      fi
    ])
  ])
  true; dnl
])

dnl Internal. Find Qt libraries without using pkg-config. Version is deduced
dnl from the discovered headers.
dnl Inputs: bitcoin_qt_want_version (from --with-gui=). The version to use.
dnl         If "auto", the version will be discovered by _BITCOIN_QT_CHECK_QT5.
dnl Outputs: All necessary QT_* variables are set.
dnl Outputs: bitcoin_qt_got_major_vers is set to "4" or "5".
dnl Outputs: have_qt_test and have_qt_dbus are set (if applicable) to yes|no.
AC_DEFUN([_BITCOIN_QT_FIND_LIBS_WITHOUT_PKGCONFIG],[
  TEMP_CPPFLAGS="$CPPFLAGS"
  TEMP_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$PIC_FLAGS $CXXFLAGS"
  TEMP_LIBS="$LIBS"
  BITCOIN_QT_CHECK([
    if test x$qt_include_path != x; then
      QT_INCLUDES="-I$qt_include_path -I$qt_include_path/QtCore -I$qt_include_path/QtGui -I$qt_include_path/QtWidgets -I$qt_include_path/QtNetwork -I$qt_include_path/QtTest -I$qt_include_path/QtDBus"
      CPPFLAGS="$QT_INCLUDES $CPPFLAGS"
    fi
  ])

  BITCOIN_QT_CHECK([AC_CHECK_HEADER([QtPlugin],,BITCOIN_QT_FAIL(QtCore headers missing))])
  BITCOIN_QT_CHECK([AC_CHECK_HEADER([QApplication],, BITCOIN_QT_FAIL(QtGui headers missing))])
  BITCOIN_QT_CHECK([AC_CHECK_HEADER([QLocalSocket],, BITCOIN_QT_FAIL(QtNetwork headers missing))])

  BITCOIN_QT_CHECK([
    if test x$bitcoin_qt_want_version = xauto; then
      _BITCOIN_QT_CHECK_QT5
    fi
    if test x$bitcoin_cv_qt5 = xyes || test x$bitcoin_qt_want_version = xqt5; then
      QT_LIB_PREFIX=Qt5
      bitcoin_qt_got_major_vers=5
    else
      QT_LIB_PREFIX=Qt
      bitcoin_qt_got_major_vers=4
    fi
  ])

  BITCOIN_QT_CHECK([
    LIBS=
    if test x$qt_lib_path != x; then
      LIBS="$LIBS -L$qt_lib_path"
    fi

    if test x$TARGET_OS = xwindows; then
      AC_CHECK_LIB([imm32],      [main],, BITCOIN_QT_FAIL(libimm32 not found))
    fi
  ])

  BITCOIN_QT_CHECK(AC_CHECK_LIB([z] ,[main],,AC_MSG_WARN([zlib not found. Assuming qt has it built-in])))
  BITCOIN_QT_CHECK(AC_SEARCH_LIBS([png_error] ,[qtpng png],,AC_MSG_WARN([libpng not found. Assuming qt has it built-in])))
  BITCOIN_QT_CHECK(AC_SEARCH_LIBS([jpeg_create_decompress] ,[qtjpeg jpeg],,AC_MSG_WARN([libjpeg not found. Assuming qt has it built-in])))
  BITCOIN_QT_CHECK(AC_SEARCH_LIBS([pcre16_exec], [qtpcre pcre16],,AC_MSG_WARN([libpcre16 not found. Assuming qt has it built-in])))
  BITCOIN_QT_CHECK(AC_SEARCH_LIBS([hb_ot_tags_from_script] ,[qtharfbuzzng harfbuzz],,AC_MSG_WARN([libharfbuzz not found. Assuming qt has it built-in or support is disabled])))
  BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Core]   ,[main],,BITCOIN_QT_FAIL(lib$QT_LIB_PREFIXCore not found)))
  BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Gui]    ,[main],,BITCOIN_QT_FAIL(lib$QT_LIB_PREFIXGui not found)))
  BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Network],[main],,BITCOIN_QT_FAIL(lib$QT_LIB_PREFIXNetwork not found)))
  if test x$bitcoin_qt_got_major_vers = x5; then
    BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Widgets],[main],,BITCOIN_QT_FAIL(lib$QT_LIB_PREFIXWidgets not found)))
  fi
  QT_LIBS="$LIBS"
  LIBS="$TEMP_LIBS"

  BITCOIN_QT_CHECK([
    LIBS=
    if test x$qt_lib_path != x; then
      LIBS="-L$qt_lib_path"
    fi
    AC_CHECK_LIB([${QT_LIB_PREFIX}Test],      [main],, have_qt_test=no)
    AC_CHECK_HEADER([QTest],, have_qt_test=no)
    QT_TEST_LIBS="$LIBS"
    if test x$use_dbus != xno; then
      LIBS=
      if test x$qt_lib_path != x; then
        LIBS="-L$qt_lib_path"
      fi
      AC_CHECK_LIB([${QT_LIB_PREFIX}DBus],      [main],, have_qt_dbus=no)
      AC_CHECK_HEADER([QtDBus],, have_qt_dbus=no)
      QT_DBUS_LIBS="$LIBS"
    fi
  ])
  CPPFLAGS="$TEMP_CPPFLAGS"
  CXXFLAGS="$TEMP_CXXFLAGS"
  LIBS="$TEMP_LIBS"
])

dnl Copyright (c) 2013-2014 The Bitcoin Core developers
dnl Distributed under the MIT software license, see the accompanying
dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.

dnl BITCOIN_SUBDIR_TO_INCLUDE([CPPFLAGS-VARIABLE-NAME],[SUBDIRECTORY-NAME],[HEADER-FILE])
dnl SUBDIRECTORY-NAME must end with a path separator
AC_DEFUN([BITCOIN_SUBDIR_TO_INCLUDE],[
  if test "x$2" = "x"; then
    AC_MSG_RESULT([default])
  else
    echo "#include <$2$3.h>" >conftest.cpp
    newinclpath=`${CXXCPP} ${CPPFLAGS} -M conftest.cpp 2>/dev/null | [ tr -d '\\n\\r\\\\' | sed -e 's/^.*[[:space:]:]\(\/[^[:space:]]*\)]$3[\.h[[:space:]].*$/\1/' -e t -e d`]
    AC_MSG_RESULT([${newinclpath}])
    if test "x${newinclpath}" != "x"; then
      eval "$1=\"\$$1\"' -I${newinclpath}'"
    fi
  fi
])

dnl Copyright (c) 2015 Tim Kosse <tim.kosse@filezilla-project.org>
dnl Copying and distribution of this file, with or without modification, are
dnl permitted in any medium without royalty provided the copyright notice
dnl and this notice are preserved. This file is offered as-is, without any
dnl warranty.

# Some versions of gcc/libstdc++ require linking with -latomic if
# using the C++ atomic library.
#
# Sourced from http://bugs.debian.org/797228

m4_define([_CHECK_ATOMIC_testbody], [[
  #include <atomic>
  #include <cstdint>

  int main() {
    std::atomic<int64_t> a{};

    int64_t v = 5;
    int64_t r = a.fetch_add(v);
    return static_cast<int>(r);
  }
]])

AC_DEFUN([CHECK_ATOMIC], [

  AC_LANG_PUSH(C++)

  AC_MSG_CHECKING([whether std::atomic can be used without link library])

  AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_ATOMIC_testbody])],[
      AC_MSG_RESULT([yes])
    ],[
      AC_MSG_RESULT([no])
      LIBS="$LIBS -latomic"
      AC_MSG_CHECKING([whether std::atomic needs -latomic])
      AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_ATOMIC_testbody])],[
          AC_MSG_RESULT([yes])
        ],[
          AC_MSG_RESULT([no])
          AC_MSG_FAILURE([cannot figure out how to use std::atomic])
        ])
    ])

  AC_LANG_POP
])

dnl require autoconf 2.60 (AS_ECHO/AS_ECHO_N)
AC_PREREQ([2.60])
define(_CLIENT_VERSION_MAJOR, 2)
define(_CLIENT_VERSION_MINOR, 0)
define(_CLIENT_VERSION_REVISION, 1)
define(_CLIENT_VERSION_BUILD, 0)
define(_CLIENT_VERSION_IS_RELEASE, true)
define(_COPYRIGHT_YEAR, 2018)
define(_COPYRIGHT_HOLDERS,[The %s developers])
define(_COPYRIGHT_HOLDERS_SUBSTITUTION,[[Yenten Core]])
AC_INIT([Yenten Core],[_CLIENT_VERSION_MAJOR._CLIENT_VERSION_MINOR._CLIENT_VERSION_REVISION],[https://github.com/conan-equal-newone/yenten/issues],[yenten],[http://conan-equal-newone.github.io/yenten/])
AC_CONFIG_SRCDIR([src/validation.cpp])
AC_CONFIG_HEADERS([src/config/bitcoin-config.h])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([build-aux/m4])

BITCOIN_DAEMON_NAME=yentend
BITCOIN_GUI_NAME=yenten-qt
BITCOIN_CLI_NAME=yenten-cli
BITCOIN_TX_NAME=yenten-tx

dnl Unless the user specified ARFLAGS, force it to be cr
AC_ARG_VAR(ARFLAGS, [Flags for the archiver, defaults to <cr> if not set])
if test "x${ARFLAGS+set}" != "xset"; then
  ARFLAGS="cr"
fi

AC_CANONICAL_HOST

AH_TOP([#ifndef BITCOIN_CONFIG_H])
AH_TOP([#define BITCOIN_CONFIG_H])
AH_BOTTOM([#endif //BITCOIN_CONFIG_H])

dnl faketime breaks configure and is only needed for make. Disable it here.
unset FAKETIME

dnl Automake init set-up and checks
AM_INIT_AUTOMAKE([no-define subdir-objects foreign])

dnl faketime messes with timestamps and causes configure to be re-run.
dnl --disable-maintainer-mode can be used to bypass this.
AM_MAINTAINER_MODE([enable])

dnl make the compilation flags quiet unless V=1 is used
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

dnl Compiler checks (here before libtool).
if test "x${CXXFLAGS+set}" = "xset"; then
  CXXFLAGS_overridden=yes
else
  CXXFLAGS_overridden=no
fi
AC_PROG_CXX

dnl By default, libtool for mingw refuses to link static libs into a dll for
dnl fear of mixing pic/non-pic objects, and import/export complications. Since
dnl we have those under control, re-enable that functionality.
case $host in
  *mingw*)
     lt_cv_deplibs_check_method="pass_all"
  ;;
esac
dnl Require C++11 compiler (no GNU extensions)
AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory], [nodefault])
dnl Check if -latomic is required for <std::atomic>
CHECK_ATOMIC

dnl Unless the user specified OBJCXX, force it to be the same as CXX. This ensures
dnl that we get the same -std flags for both.
m4_ifdef([AC_PROG_OBJCXX],[
if test "x${OBJCXX+set}" = "x"; then
  OBJCXX="${CXX}"
fi
AC_PROG_OBJCXX
])

dnl Libtool init checks.
LT_INIT([pic-only])

dnl Check/return PATH for base programs.
AC_PATH_TOOL(AR, ar)
AC_PATH_TOOL(RANLIB, ranlib)
AC_PATH_TOOL(STRIP, strip)
AC_PATH_TOOL(GCOV, gcov)
AC_PATH_PROG(LCOV, lcov)
dnl Python 3.x is supported from 3.4 on (see https://github.com/bitcoin/bitcoin/issues/7893)
AC_PATH_PROGS([PYTHON], [python3.6 python3.5 python3.4 python3 python2.7 python2 python])
AC_PATH_PROG(GENHTML, genhtml)
AC_PATH_PROG([GIT], [git])
AC_PATH_PROG(CCACHE,ccache)
AC_PATH_PROG(XGETTEXT,xgettext)
AC_PATH_PROG(HEXDUMP,hexdump)
AC_PATH_TOOL(READELF, readelf)
AC_PATH_TOOL(CPPFILT, c++filt)
AC_PATH_TOOL(OBJCOPY, objcopy)

AC_ARG_VAR(PYTHONPATH, Augments the default search path for python module files)

# Enable wallet
AC_ARG_ENABLE([wallet],
  [AS_HELP_STRING([--disable-wallet],
  [disable wallet (enabled by default)])],
  [enable_wallet=$enableval],
  [enable_wallet=yes])

AC_ARG_WITH([miniupnpc],
  [AS_HELP_STRING([--with-miniupnpc],
  [enable UPNP (default is yes if libminiupnpc is found)])],
  [use_upnp=$withval],
  [use_upnp=auto])

AC_ARG_ENABLE([upnp-default],
  [AS_HELP_STRING([--enable-upnp-default],
  [if UPNP is enabled, turn it on at startup (default is no)])],
  [use_upnp_default=$enableval],
  [use_upnp_default=no])

AC_ARG_ENABLE(tests,
    AS_HELP_STRING([--disable-tests],[do not compile tests (default is to compile)]),
    [use_tests=$enableval],
    [use_tests=yes])

AC_ARG_ENABLE(gui-tests,
    AS_HELP_STRING([--disable-gui-tests],[do not compile GUI tests (default is to compile if GUI and tests enabled)]),
    [use_gui_tests=$enableval],
    [use_gui_tests=$use_tests])

AC_ARG_ENABLE(bench,
    AS_HELP_STRING([--disable-bench],[do not compile benchmarks (default is to compile)]),
    [use_bench=$enableval],
    [use_bench=yes])

AC_ARG_ENABLE([extended-functional-tests],
    AS_HELP_STRING([--enable-extended-functional-tests],[enable expensive functional tests when using lcov (default no)]),
    [use_extended_functional_tests=$enableval],
    [use_extended_functional_tests=no])

AC_ARG_WITH([qrencode],
  [AS_HELP_STRING([--with-qrencode],
  [enable QR code support (default is yes if qt is enabled and libqrencode is found)])],
  [use_qr=$withval],
  [use_qr=auto])

AC_ARG_ENABLE([hardening],
  [AS_HELP_STRING([--disable-hardening],
  [do not attempt to harden the resulting executables (default is to harden)])],
  [use_hardening=$enableval],
  [use_hardening=yes])

AC_ARG_ENABLE([reduce-exports],
  [AS_HELP_STRING([--enable-reduce-exports],
  [attempt to reduce exported symbols in the resulting executables (default is no)])],
  [use_reduce_exports=$enableval],
  [use_reduce_exports=no])

AC_ARG_ENABLE([ccache],
  [AS_HELP_STRING([--disable-ccache],
  [do not use ccache for building (default is to use if found)])],
  [use_ccache=$enableval],
  [use_ccache=auto])

AC_ARG_ENABLE([lcov],
  [AS_HELP_STRING([--enable-lcov],
  [enable lcov testing (default is no)])],
  [use_lcov=yes],
  [use_lcov=no])
  
AC_ARG_ENABLE([lcov-branch-coverage],
  [AS_HELP_STRING([--enable-lcov-branch-coverage],
  [enable lcov testing branch coverage (default is no)])],
  [use_lcov_branch=yes],
  [use_lcov_branch=no])

AC_ARG_ENABLE([glibc-back-compat],
  [AS_HELP_STRING([--enable-glibc-back-compat],
  [enable backwards compatibility with glibc])],
  [use_glibc_compat=$enableval],
  [use_glibc_compat=no])

AC_ARG_ENABLE([experimental-asm],
  [AS_HELP_STRING([--enable-experimental-asm],
  [Enable experimental assembly routines (default is no)])],
  [experimental_asm=$enableval],
  [experimental_asm=no])

if test "x$experimental_asm" = xyes; then
  AC_DEFINE(EXPERIMENTAL_ASM, 1, [Define this symbol to build in experimental assembly routines])
fi

AC_ARG_WITH([system-univalue],
  [AS_HELP_STRING([--with-system-univalue],
  [Build with system UniValue (default is no)])],
  [system_univalue=$withval],
  [system_univalue=no]
)
AC_ARG_ENABLE([zmq],
  [AS_HELP_STRING([--disable-zmq],
  [disable ZMQ notifications])],
  [use_zmq=$enableval],
  [use_zmq=yes])

AC_ARG_WITH([protoc-bindir],[AS_HELP_STRING([--with-protoc-bindir=BIN_DIR],[specify protoc bin path])], [protoc_bin_path=$withval], [])

AC_ARG_ENABLE(man,
    [AS_HELP_STRING([--disable-man],
                    [do not install man pages (default is to install)])],,
    enable_man=yes)
AM_CONDITIONAL(ENABLE_MAN, test "$enable_man" != no)

# Enable debug
AC_ARG_ENABLE([debug],
    [AS_HELP_STRING([--enable-debug],
                    [use debug compiler flags and macros (default is no)])],
    [enable_debug=$enableval],
    [enable_debug=no])

# Turn warnings into errors
AC_ARG_ENABLE([werror],
    [AS_HELP_STRING([--enable-werror],
                    [Treat certain compiler warnings as errors (default is no)])],
    [enable_werror=$enableval],
    [enable_werror=no])

AC_LANG_PUSH([C++])
AX_CHECK_COMPILE_FLAG([-Werror],[CXXFLAG_WERROR="-Werror"],[CXXFLAG_WERROR=""])

if test "x$enable_debug" = xyes; then
    CPPFLAGS="$CPPFLAGS -DDEBUG -DDEBUG_LOCKORDER"
    if test "x$GCC" = xyes; then
        CFLAGS="$CFLAGS -g3 -O0"
    fi

    if test "x$GXX" = xyes; then
        CXXFLAGS="$CXXFLAGS -g3 -O0"
    fi
fi

ERROR_CXXFLAGS=
if test "x$enable_werror" = "xyes"; then
  if test "x$CXXFLAG_WERROR" = "x"; then
    AC_MSG_ERROR("enable-werror set but -Werror is not usable")
  fi
  AX_CHECK_COMPILE_FLAG([-Werror=vla],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=vla"],,[[$CXXFLAG_WERROR]])
fi

if test "x$CXXFLAGS_overridden" = "xno"; then
  AX_CHECK_COMPILE_FLAG([-Wall],[CXXFLAGS="$CXXFLAGS -Wall"],,[[$CXXFLAG_WERROR]])
  AX_CHECK_COMPILE_FLAG([-Wextra],[CXXFLAGS="$CXXFLAGS -Wextra"],,[[$CXXFLAG_WERROR]])
  AX_CHECK_COMPILE_FLAG([-Wformat],[CXXFLAGS="$CXXFLAGS -Wformat"],,[[$CXXFLAG_WERROR]])
  AX_CHECK_COMPILE_FLAG([-Wvla],[CXXFLAGS="$CXXFLAGS -Wvla"],,[[$CXXFLAG_WERROR]])
  AX_CHECK_COMPILE_FLAG([-Wformat-security],[CXXFLAGS="$CXXFLAGS -Wformat-security"],,[[$CXXFLAG_WERROR]])

  ## Some compilers (gcc) ignore unknown -Wno-* options, but warn about all
  ## unknown options if any other warning is produced. Test the -Wfoo case, and
  ## set the -Wno-foo case if it works.
  AX_CHECK_COMPILE_FLAG([-Wunused-parameter],[CXXFLAGS="$CXXFLAGS -Wno-unused-parameter"],,[[$CXXFLAG_WERROR]])
  AX_CHECK_COMPILE_FLAG([-Wself-assign],[CXXFLAGS="$CXXFLAGS -Wno-self-assign"],,[[$CXXFLAG_WERROR]])
  AX_CHECK_COMPILE_FLAG([-Wunused-local-typedef],[CXXFLAGS="$CXXFLAGS -Wno-unused-local-typedef"],,[[$CXXFLAG_WERROR]])
  AX_CHECK_COMPILE_FLAG([-Wdeprecated-register],[CXXFLAGS="$CXXFLAGS -Wno-deprecated-register"],,[[$CXXFLAG_WERROR]])
  AX_CHECK_COMPILE_FLAG([-Wimplicit-fallthrough],[CXXFLAGS="$CXXFLAGS -Wno-implicit-fallthrough"],,[[$CXXFLAG_WERROR]])
fi

# Check for optional instruction set support. Enabling these does _not_ imply that all code will
# be compiled with them, rather that specific objects/libs may use them after checking for runtime
# compatibility.
AX_CHECK_COMPILE_FLAG([-msse4.2],[[SSE42_CXXFLAGS="-msse4.2"]],,[[$CXXFLAG_WERROR]])

TEMP_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS $SSE42_CXXFLAGS"
AC_MSG_CHECKING(for assembler crc32 support)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
    #include <stdint.h>
    #if defined(_MSC_VER)
    #include <intrin.h>
    #elif defined(__GNUC__) && defined(__SSE4_2__)
    #include <nmmintrin.h>
    #endif
  ]],[[
    uint64_t l = 0;
    l = _mm_crc32_u8(l, 0);
    l = _mm_crc32_u32(l, 0);
    l = _mm_crc32_u64(l, 0);
    return l;
  ]])],
 [ AC_MSG_RESULT(yes); enable_hwcrc32=yes],
 [ AC_MSG_RESULT(no)]
)
CXXFLAGS="$TEMP_CXXFLAGS"

CPPFLAGS="$CPPFLAGS -DHAVE_BUILD_INFO -D__STDC_FORMAT_MACROS"

AC_ARG_WITH([utils],
  [AS_HELP_STRING([--with-utils],
  [build bitcoin-cli bitcoin-tx (default=yes)])],
  [build_bitcoin_utils=$withval],
  [build_bitcoin_utils=yes])

AC_ARG_WITH([libs],
  [AS_HELP_STRING([--with-libs],
  [build libraries (default=yes)])],
  [build_bitcoin_libs=$withval],
  [build_bitcoin_libs=yes])

AC_ARG_WITH([daemon],
  [AS_HELP_STRING([--with-daemon],
  [build bitcoind daemon (default=yes)])],
  [build_bitcoind=$withval],
  [build_bitcoind=yes])

use_pkgconfig=yes
case $host in
  *mingw*)

     #pkgconfig does more harm than good with MinGW
     use_pkgconfig=no

     TARGET_OS=windows
     AC_CHECK_LIB([mingwthrd],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([kernel32],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([user32],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([gdi32],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([comdlg32],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([winspool],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([winmm],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([shell32],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([comctl32],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([ole32],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([oleaut32],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([uuid],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([rpcrt4],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([advapi32],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([ws2_32],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([mswsock],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([shlwapi],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([iphlpapi],      [main],, AC_MSG_ERROR(lib missing))
     AC_CHECK_LIB([crypt32],      [main],, AC_MSG_ERROR(lib missing))

     # -static is interpreted by libtool, where it has a different meaning.
     # In libtool-speak, it's -all-static.
     AX_CHECK_LINK_FLAG([[-static]],[LIBTOOL_APP_LDFLAGS="$LIBTOOL_APP_LDFLAGS -all-static"])

     AC_PATH_PROG([MAKENSIS], [makensis], none)
     if test x$MAKENSIS = xnone; then
       AC_MSG_WARN("makensis not found. Cannot create installer.")
     fi

     AC_PATH_TOOL(WINDRES, windres, none)
     if test x$WINDRES = xnone; then
       AC_MSG_ERROR("windres not found")
     fi

     CPPFLAGS="$CPPFLAGS -D_MT -DWIN32 -D_WINDOWS -DBOOST_THREAD_USE_LIB"
     LEVELDB_TARGET_FLAGS="-DOS_WINDOWS"
     if test "x$CXXFLAGS_overridden" = "xno"; then
       CXXFLAGS="$CXXFLAGS -w"
     fi
     case $host in
       i?86-*) WINDOWS_BITS=32 ;;
       x86_64-*) WINDOWS_BITS=64 ;;
       *) AC_MSG_ERROR("Could not determine win32/win64 for installer") ;;
     esac
     AC_SUBST(WINDOWS_BITS)

     dnl libtool insists upon adding -nostdlib and a list of objects/libs to link against.
     dnl That breaks our ability to build dll's with static libgcc/libstdc++/libssp. Override
     dnl its command here, with the predeps/postdeps removed, and -static inserted. Postdeps are
     dnl also overridden to prevent their insertion later.
     dnl This should only affect dll's.
     archive_cmds_CXX="\$CC -shared \$libobjs \$deplibs \$compiler_flags -static -o \$output_objdir/\$soname \${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker \$lib"
     postdeps_CXX=

     ;;
  *darwin*)
     TARGET_OS=darwin
     LEVELDB_TARGET_FLAGS="-DOS_MACOSX"
     if  test x$cross_compiling != xyes; then
       BUILD_OS=darwin
       AC_CHECK_PROG([PORT],port, port)
       if test x$PORT = xport; then
         dnl add default macports paths
         CPPFLAGS="$CPPFLAGS -isystem /opt/local/include"
         LIBS="$LIBS -L/opt/local/lib"
         if test -d /opt/local/include/db48; then
           CPPFLAGS="$CPPFLAGS -I/opt/local/include/db48"
           LIBS="$LIBS -L/opt/local/lib/db48"
         fi
       fi

       AC_PATH_PROGS([RSVG_CONVERT], [rsvg-convert rsvg],rsvg-convert)
       AC_CHECK_PROG([BREW],brew, brew)
       if test x$BREW = xbrew; then
         dnl These Homebrew packages may be keg-only, meaning that they won't be found
         dnl in expected paths because they may conflict with system files. Ask
         dnl Homebrew where each one is located, then adjust paths accordingly.
         dnl It's safe to add these paths even if the functionality is disabled by
         dnl the user (--without-wallet or --without-gui for example).

         openssl_prefix=`$BREW --prefix openssl 2>/dev/null`
         bdb_prefix=`$BREW --prefix berkeley-db4 2>/dev/null`
         qt5_prefix=`$BREW --prefix qt5 2>/dev/null`
         if test x$openssl_prefix != x; then
           PKG_CONFIG_PATH="$openssl_prefix/lib/pkgconfig:$PKG_CONFIG_PATH"
           export PKG_CONFIG_PATH
         fi
         if test x$bdb_prefix != x; then
           CPPFLAGS="$CPPFLAGS -I$bdb_prefix/include"
           LIBS="$LIBS -L$bdb_prefix/lib"
         fi
         if test x$qt5_prefix != x; then
           PKG_CONFIG_PATH="$qt5_prefix/lib/pkgconfig:$PKG_CONFIG_PATH"
           export PKG_CONFIG_PATH
         fi
       fi
     else
       case $build_os in
         *darwin*)
           BUILD_OS=darwin
           ;;
         *)
           AC_PATH_TOOL([INSTALLNAMETOOL], [install_name_tool], install_name_tool)
           AC_PATH_TOOL([OTOOL], [otool], otool)
           AC_PATH_PROGS([GENISOIMAGE], [genisoimage mkisofs],genisoimage)
           AC_PATH_PROGS([RSVG_CONVERT], [rsvg-convert rsvg],rsvg-convert)
           AC_PATH_PROGS([IMAGEMAGICK_CONVERT], [convert],convert)
           AC_PATH_PROGS([TIFFCP], [tiffcp],tiffcp)

           dnl libtool will try to strip the static lib, which is a problem for
           dnl cross-builds because strip attempts to call a hard-coded ld,
           dnl which may not exist in the path. Stripping the .a is not
           dnl necessary, so just disable it.
           old_striplib=
           ;;
       esac
     fi

     AX_CHECK_LINK_FLAG([[-Wl,-headerpad_max_install_names]], [LDFLAGS="$LDFLAGS -Wl,-headerpad_max_install_names"])
     CPPFLAGS="$CPPFLAGS -DMAC_OSX"
     OBJCXXFLAGS="$CXXFLAGS"
     ;;
   *linux*)
     TARGET_OS=linux
     LEVELDB_TARGET_FLAGS="-DOS_LINUX"
     ;;
   *freebsd*)
     LEVELDB_TARGET_FLAGS="-DOS_FREEBSD"
     ;;
   *openbsd*)
     LEVELDB_TARGET_FLAGS="-DOS_OPENBSD"
     ;;
   *)
     OTHER_OS=`echo ${host_os} | awk '{print toupper($0)}'`
     AC_MSG_WARN([Guessing LevelDB OS as OS_${OTHER_OS}, please check whether this is correct, if not add an entry to configure.ac.])
     LEVELDB_TARGET_FLAGS="-DOS_${OTHER_OS}"
     ;;
esac

if test x$use_pkgconfig = xyes; then
  m4_ifndef([PKG_PROG_PKG_CONFIG], [AC_MSG_ERROR(PKG_PROG_PKG_CONFIG macro not found. Please install pkg-config and re-run autogen.sh.)])
  m4_ifdef([PKG_PROG_PKG_CONFIG], [
  PKG_PROG_PKG_CONFIG
  if test x"$PKG_CONFIG" = "x"; then
    AC_MSG_ERROR(pkg-config not found.)
  fi
  ])
fi

if test x$use_extended_functional_tests != xno; then
  AC_SUBST(EXTENDED_FUNCTIONAL_TESTS, --extended)
fi

if test x$use_lcov = xyes; then
  if test x$LCOV = x; then
    AC_MSG_ERROR("lcov testing requested but lcov not found")
  fi
  if test x$GCOV = x; then
    AC_MSG_ERROR("lcov testing requested but gcov not found")
  fi
  if test x$PYTHON = x; then
    AC_MSG_ERROR("lcov testing requested but python not found")
  fi
  if test x$GENHTML = x; then
    AC_MSG_ERROR("lcov testing requested but genhtml not found")
  fi
  LCOV="$LCOV --gcov-tool=$GCOV"
  AX_CHECK_LINK_FLAG([[--coverage]], [LDFLAGS="$LDFLAGS --coverage"],
    [AC_MSG_ERROR("lcov testing requested but --coverage linker flag does not work")])
  AX_CHECK_COMPILE_FLAG([--coverage],[CXXFLAGS="$CXXFLAGS --coverage"],
    [AC_MSG_ERROR("lcov testing requested but --coverage flag does not work")])
  AC_DEFINE(USE_COVERAGE, 1, [Define this symbol if coverage is enabled])
  CXXFLAGS="$CXXFLAGS -Og"
fi

if test x$use_lcov_branch != xno; then
  AC_SUBST(LCOV_OPTS, "$LCOV_OPTS --rc lcov_branch_coverage=1")
fi

dnl Check for endianness
AC_C_BIGENDIAN

dnl Check for pthread compile/link requirements
AX_PTHREAD

# The following macro will add the necessary defines to bitcoin-config.h, but
# they also need to be passed down to any subprojects. Pull the results out of
# the cache and add them to CPPFLAGS.
AC_SYS_LARGEFILE
# detect POSIX or GNU variant of strerror_r
AC_FUNC_STRERROR_R

if test x$ac_cv_sys_file_offset_bits != x &&
   test x$ac_cv_sys_file_offset_bits != xno &&
   test x$ac_cv_sys_file_offset_bits != xunknown; then
  CPPFLAGS="$CPPFLAGS -D_FILE_OFFSET_BITS=$ac_cv_sys_file_offset_bits"
fi

if test x$ac_cv_sys_large_files != x &&
   test x$ac_cv_sys_large_files != xno &&
   test x$ac_cv_sys_large_files != xunknown; then
  CPPFLAGS="$CPPFLAGS -D_LARGE_FILES=$ac_cv_sys_large_files"
fi

AX_CHECK_LINK_FLAG([[-Wl,--large-address-aware]], [LDFLAGS="$LDFLAGS -Wl,--large-address-aware"])

AX_GCC_FUNC_ATTRIBUTE([visibility])
AX_GCC_FUNC_ATTRIBUTE([dllexport])
AX_GCC_FUNC_ATTRIBUTE([dllimport])

if test x$use_glibc_compat != xno; then

  #glibc absorbed clock_gettime in 2.17. librt (its previous location) is safe to link
  #in anyway for back-compat.
  AC_CHECK_LIB([rt],[clock_gettime],, AC_MSG_ERROR(lib missing))

  #__fdelt_chk's params and return type have changed from long unsigned int to long int.
  # See which one is present here.
  AC_MSG_CHECKING(__fdelt_chk type)
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#ifdef _FORTIFY_SOURCE
                    #undef _FORTIFY_SOURCE
                  #endif
                  #define _FORTIFY_SOURCE 2
                  #include <sys/select.h>
     extern "C" long unsigned int __fdelt_warn(long unsigned int);]],[[]])],
    [ fdelt_type="long unsigned int"],
    [ fdelt_type="long int"])
  AC_MSG_RESULT($fdelt_type)
  AC_DEFINE_UNQUOTED(FDELT_TYPE, $fdelt_type,[parameter and return value type for __fdelt_chk])
else
  AC_SEARCH_LIBS([clock_gettime],[rt])
fi

if test x$TARGET_OS != xwindows; then
  # All windows code is PIC, forcing it on just adds useless compile warnings
  AX_CHECK_COMPILE_FLAG([-fPIC],[PIC_FLAGS="-fPIC"])
fi

if test x$use_hardening != xno; then
  AX_CHECK_COMPILE_FLAG([-Wstack-protector],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -Wstack-protector"])
  AX_CHECK_COMPILE_FLAG([-fstack-protector-all],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fstack-protector-all"])

  AX_CHECK_PREPROC_FLAG([-D_FORTIFY_SOURCE=2],[
    AX_CHECK_PREPROC_FLAG([-U_FORTIFY_SOURCE],[
      HARDENED_CPPFLAGS="$HARDENED_CPPFLAGS -U_FORTIFY_SOURCE"
    ])
    HARDENED_CPPFLAGS="$HARDENED_CPPFLAGS -D_FORTIFY_SOURCE=2"
  ])

  AX_CHECK_LINK_FLAG([[-Wl,--dynamicbase]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,--dynamicbase"])
  AX_CHECK_LINK_FLAG([[-Wl,--nxcompat]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,--nxcompat"])
  AX_CHECK_LINK_FLAG([[-Wl,--high-entropy-va]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,--high-entropy-va"])
  AX_CHECK_LINK_FLAG([[-Wl,-z,relro]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,-z,relro"])
  AX_CHECK_LINK_FLAG([[-Wl,-z,now]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,-z,now"])

  if test x$TARGET_OS != xwindows; then
    AX_CHECK_COMPILE_FLAG([-fPIE],[PIE_FLAGS="-fPIE"])
    AX_CHECK_LINK_FLAG([[-pie]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -pie"])
  fi

  case $host in
    *mingw*)
       AC_CHECK_LIB([ssp],      [main],, AC_MSG_ERROR(lib missing))
    ;;
  esac
fi

dnl this flag screws up non-darwin gcc even when the check fails. special-case it.
if test x$TARGET_OS = xdarwin; then
  AX_CHECK_LINK_FLAG([[-Wl,-dead_strip]], [LDFLAGS="$LDFLAGS -Wl,-dead_strip"])
fi

AC_CHECK_HEADERS([endian.h sys/endian.h byteswap.h stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h sys/prctl.h])

AC_CHECK_DECLS([strnlen])

# Check for daemon(3), unrelated to --with-daemon (although used by it)
AC_CHECK_DECLS([daemon])

AC_CHECK_DECLS([le16toh, le32toh, le64toh, htole16, htole32, htole64, be16toh, be32toh, be64toh, htobe16, htobe32, htobe64],,,
		[#if HAVE_ENDIAN_H
                 #include <endian.h>
                 #elif HAVE_SYS_ENDIAN_H
                 #include <sys/endian.h>
                 #endif])

AC_CHECK_DECLS([bswap_16, bswap_32, bswap_64],,,
		[#if HAVE_BYTESWAP_H
                 #include <byteswap.h>
                 #endif])

AC_CHECK_DECLS([__builtin_clz, __builtin_clzl, __builtin_clzll])

dnl Check for MSG_NOSIGNAL
AC_MSG_CHECKING(for MSG_NOSIGNAL)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
 [[ int f = MSG_NOSIGNAL; ]])],
 [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_MSG_NOSIGNAL, 1,[Define this symbol if you have MSG_NOSIGNAL]) ],
 [ AC_MSG_RESULT(no)]
)

dnl Check for MSG_DONTWAIT
AC_MSG_CHECKING(for MSG_DONTWAIT)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
 [[ int f = MSG_DONTWAIT; ]])],
 [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_MSG_DONTWAIT, 1,[Define this symbol if you have MSG_DONTWAIT]) ],
 [ AC_MSG_RESULT(no)]
)

dnl Check for malloc_info (for memory statistics information in getmemoryinfo)
AC_MSG_CHECKING(for getmemoryinfo)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <malloc.h>]],
 [[ int f = malloc_info(0, NULL); ]])],
 [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_MALLOC_INFO, 1,[Define this symbol if you have malloc_info]) ],
 [ AC_MSG_RESULT(no)]
)

dnl Check for mallopt(M_ARENA_MAX) (to set glibc arenas)
AC_MSG_CHECKING(for mallopt M_ARENA_MAX)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <malloc.h>]],
 [[ mallopt(M_ARENA_MAX, 1); ]])],
 [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_MALLOPT_ARENA_MAX, 1,[Define this symbol if you have mallopt with M_ARENA_MAX]) ],
 [ AC_MSG_RESULT(no)]
)

AC_MSG_CHECKING([for visibility attribute])
AC_LINK_IFELSE([AC_LANG_SOURCE([
  int foo_def( void ) __attribute__((visibility("default")));
  int main(){}
  ])],
  [
    AC_DEFINE(HAVE_VISIBILITY_ATTRIBUTE,1,[Define if the visibility attribute is supported.])
    AC_MSG_RESULT(yes)
  ],
  [
    AC_MSG_RESULT(no)
    if test x$use_reduce_exports = xyes; then
      AC_MSG_ERROR([Cannot find a working visibility attribute. Use --disable-reduce-exports.])
    fi
  ]
)

# Check for different ways of gathering OS randomness
AC_MSG_CHECKING(for Linux getrandom syscall)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
  #include <sys/syscall.h>
  #include <linux/random.h>]],
 [[ syscall(SYS_getrandom, nullptr, 32, 0); ]])],
 [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SYS_GETRANDOM, 1,[Define this symbol if the Linux getrandom system call is available]) ],
 [ AC_MSG_RESULT(no)]
)

AC_MSG_CHECKING(for getentropy)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>]],
 [[ getentropy(nullptr, 32) ]])],
 [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_GETENTROPY, 1,[Define this symbol if the BSD getentropy system call is available]) ],
 [ AC_MSG_RESULT(no)]
)

AC_MSG_CHECKING(for getentropy via random.h)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
 #include <sys/random.h>]],
 [[ getentropy(nullptr, 32) ]])],
 [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_GETENTROPY_RAND, 1,[Define this symbol if the BSD getentropy system call is available with sys/random.h]) ],
 [ AC_MSG_RESULT(no)]
)

AC_MSG_CHECKING(for sysctl KERN_ARND)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
  #include <sys/sysctl.h>]],
 [[ static const int name[2] = {CTL_KERN, KERN_ARND};
    sysctl(name, 2, nullptr, nullptr, nullptr, 0); ]])],
 [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SYSCTL_ARND, 1,[Define this symbol if the BSD sysctl(KERN_ARND) is available]) ],
 [ AC_MSG_RESULT(no)]
)

# Check for reduced exports
if test x$use_reduce_exports = xyes; then
  AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],[RE_CXXFLAGS="-fvisibility=hidden"],
  [AC_MSG_ERROR([Cannot set default symbol visibility. Use --disable-reduce-exports.])])
fi

LEVELDB_CPPFLAGS=
LIBLEVELDB=
LIBMEMENV=
AM_CONDITIONAL([EMBEDDED_LEVELDB],[true])
AC_SUBST(LEVELDB_CPPFLAGS)
AC_SUBST(LIBLEVELDB)
AC_SUBST(LIBMEMENV)

if test x$enable_wallet != xno; then
    dnl Check for libdb_cxx only if wallet enabled
    BITCOIN_FIND_BDB48
fi

dnl Check for libminiupnpc (optional)
if test x$use_upnp != xno; then
  AC_CHECK_HEADERS(
    [miniupnpc/miniwget.h miniupnpc/miniupnpc.h miniupnpc/upnpcommands.h miniupnpc/upnperrors.h],
    [AC_CHECK_LIB([miniupnpc], [main],[MINIUPNPC_LIBS=-lminiupnpc], [have_miniupnpc=no])],
    [have_miniupnpc=no]
  )
fi

BITCOIN_QT_INIT

dnl sets $bitcoin_enable_qt, $bitcoin_enable_qt_test, $bitcoin_enable_qt_dbus
BITCOIN_QT_CONFIGURE([$use_pkgconfig], [qt5])

if test x$build_bitcoin_utils$build_bitcoind$bitcoin_enable_qt$use_tests$use_bench = xnonononono; then
    use_boost=no
else
    use_boost=yes
fi

if test x$use_boost = xyes; then

dnl Minimum required Boost version
define(MINIMUM_REQUIRED_BOOST, 1.47.0)

dnl Check for boost libs
AX_BOOST_BASE([MINIMUM_REQUIRED_BOOST])
AX_BOOST_SYSTEM
AX_BOOST_FILESYSTEM
AX_BOOST_PROGRAM_OPTIONS
AX_BOOST_THREAD
AX_BOOST_CHRONO

dnl Boost 1.56 through 1.62 allow using std::atomic instead of its own atomic
dnl counter implementations. In 1.63 and later the std::atomic approach is default.
m4_pattern_allow(DBOOST_AC_USE_STD_ATOMIC) dnl otherwise it's treated like a macro
BOOST_CPPFLAGS="-DBOOST_SP_USE_STD_ATOMIC -DBOOST_AC_USE_STD_ATOMIC $BOOST_CPPFLAGS"

if test x$use_reduce_exports = xyes; then
  AC_MSG_CHECKING([for working boost reduced exports])
  TEMP_CPPFLAGS="$CPPFLAGS"
  CPPFLAGS="$BOOST_CPPFLAGS $CPPFLAGS"
  AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
      @%:@include <boost/version.hpp>
    ]], [[
      #if BOOST_VERSION >= 104900
      // Everything is okay
      #else
      #  error Boost version is too old
      #endif
    ]])],[
      AC_MSG_RESULT(yes)
    ],[
    AC_MSG_ERROR([boost versions < 1.49 are known to be broken with reduced exports. Use --disable-reduce-exports.])
  ])
  CPPFLAGS="$TEMP_CPPFLAGS"
fi
fi

if test x$use_reduce_exports = xyes; then
    CXXFLAGS="$CXXFLAGS $RE_CXXFLAGS"
    AX_CHECK_LINK_FLAG([[-Wl,--exclude-libs,ALL]], [RELDFLAGS="-Wl,--exclude-libs,ALL"])
fi

if test x$use_tests = xyes; then

  if test x$HEXDUMP = x; then
    AC_MSG_ERROR(hexdump is required for tests)
  fi


  if test x$use_boost = xyes; then

  AX_BOOST_UNIT_TEST_FRAMEWORK

  dnl Determine if -DBOOST_TEST_DYN_LINK is needed
  AC_MSG_CHECKING([for dynamic linked boost test])
  TEMP_LIBS="$LIBS"
  LIBS="$LIBS $BOOST_LDFLAGS $BOOST_UNIT_TEST_FRAMEWORK_LIB"
  TEMP_CPPFLAGS="$CPPFLAGS"
  CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
  AC_LINK_IFELSE([AC_LANG_SOURCE([
       #define BOOST_TEST_DYN_LINK
       #define BOOST_TEST_MAIN
        #include <boost/test/unit_test.hpp>

       ])],
    [AC_MSG_RESULT(yes)]
    [TESTDEFS="$TESTDEFS -DBOOST_TEST_DYN_LINK"],
    [AC_MSG_RESULT(no)])
  LIBS="$TEMP_LIBS"
  CPPFLAGS="$TEMP_CPPFLAGS"

  fi
fi

if test x$use_boost = xyes; then

BOOST_LIBS="$BOOST_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_FILESYSTEM_LIB $BOOST_PROGRAM_OPTIONS_LIB $BOOST_THREAD_LIB $BOOST_CHRONO_LIB"


dnl If boost (prior to 1.57) was built without c++11, it emulated scoped enums
dnl using c++98 constructs. Unfortunately, this implementation detail leaked into
dnl the abi. This was fixed in 1.57.

dnl When building against that installed version using c++11, the headers pick up
dnl on the native c++11 scoped enum support and enable it, however it will fail to
dnl link. This can be worked around by disabling c++11 scoped enums if linking will
dnl fail.
dnl BOOST_NO_SCOPED_ENUMS was changed to BOOST_NO_CXX11_SCOPED_ENUMS in 1.51.

TEMP_LIBS="$LIBS"
LIBS="$BOOST_LIBS $LIBS"
TEMP_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
AC_MSG_CHECKING([for mismatched boost c++11 scoped enums])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
  #include "boost/config.hpp"
  #include "boost/version.hpp"
  #if !defined(BOOST_NO_SCOPED_ENUMS) && !defined(BOOST_NO_CXX11_SCOPED_ENUMS) && BOOST_VERSION < 105700
  #define BOOST_NO_SCOPED_ENUMS
  #define BOOST_NO_CXX11_SCOPED_ENUMS
  #define CHECK
  #endif
  #include "boost/filesystem.hpp"
  ]],[[
  #if defined(CHECK)
    boost::filesystem::copy_file("foo", "bar");
  #else
    choke;
  #endif
  ]])],
  [AC_MSG_RESULT(mismatched); BOOST_CPPFLAGS="$BOOST_CPPFLAGS -DBOOST_NO_SCOPED_ENUMS -DBOOST_NO_CXX11_SCOPED_ENUMS"], [AC_MSG_RESULT(ok)])
LIBS="$TEMP_LIBS"
CPPFLAGS="$TEMP_CPPFLAGS"

dnl Boost >= 1.50 uses sleep_for rather than the now-deprecated sleep, however
dnl it was broken from 1.50 to 1.52 when backed by nanosleep. Use sleep_for if
dnl a working version is available, else fall back to sleep. sleep was removed
dnl after 1.56.
dnl If neither is available, abort.
TEMP_LIBS="$LIBS"
LIBS="$BOOST_LIBS $LIBS"
TEMP_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
  #include <boost/thread/thread.hpp>
  #include <boost/version.hpp>
  ]],[[
  #if BOOST_VERSION >= 105000 && (!defined(BOOST_HAS_NANOSLEEP) || BOOST_VERSION >= 105200)
      boost::this_thread::sleep_for(boost::chrono::milliseconds(0));
  #else
   choke me
  #endif
  ]])],
  [boost_sleep=yes;
     AC_DEFINE(HAVE_WORKING_BOOST_SLEEP_FOR, 1, [Define this symbol if boost sleep_for works])],
  [boost_sleep=no])
LIBS="$TEMP_LIBS"
CPPFLAGS="$TEMP_CPPFLAGS"

if test x$boost_sleep != xyes; then
TEMP_LIBS="$LIBS"
LIBS="$BOOST_LIBS $LIBS"
TEMP_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
  #include <boost/version.hpp>
  #include <boost/thread.hpp>
  #include <boost/date_time/posix_time/posix_time_types.hpp>
  ]],[[
  #if BOOST_VERSION <= 105600
      boost::this_thread::sleep(boost::posix_time::milliseconds(0));
  #else
   choke me
  #endif
  ]])],
  [boost_sleep=yes; AC_DEFINE(HAVE_WORKING_BOOST_SLEEP, 1, [Define this symbol if boost sleep works])],
  [boost_sleep=no])
LIBS="$TEMP_LIBS"
CPPFLAGS="$TEMP_CPPFLAGS"
fi

if test x$boost_sleep != xyes; then
  AC_MSG_ERROR(No working boost sleep implementation found.)
fi

fi

if test x$use_pkgconfig = xyes; then
  : dnl
  m4_ifdef(
    [PKG_CHECK_MODULES],
    [
      PKG_CHECK_MODULES([SSL], [libssl],, [AC_MSG_ERROR(openssl  not found.)])
      PKG_CHECK_MODULES([CRYPTO], [libcrypto],,[AC_MSG_ERROR(libcrypto  not found.)])
      BITCOIN_QT_CHECK([PKG_CHECK_MODULES([PROTOBUF], [protobuf], [have_protobuf=yes], [BITCOIN_QT_FAIL(libprotobuf not found)])])
      if test x$use_qr != xno; then
        BITCOIN_QT_CHECK([PKG_CHECK_MODULES([QR], [libqrencode], [have_qrencode=yes], [have_qrencode=no])])
      fi
      if test x$build_bitcoin_utils$build_bitcoind$bitcoin_enable_qt$use_tests != xnononono; then
        PKG_CHECK_MODULES([EVENT], [libevent],, [AC_MSG_ERROR(libevent not found.)])
        if test x$TARGET_OS != xwindows; then
          PKG_CHECK_MODULES([EVENT_PTHREADS], [libevent_pthreads],, [AC_MSG_ERROR(libevent_pthreads not found.)])
        fi
      fi

      if test "x$use_zmq" = "xyes"; then
        PKG_CHECK_MODULES([ZMQ],[libzmq >= 4],
          [AC_DEFINE([ENABLE_ZMQ],[1],[Define to 1 to enable ZMQ functions])],
          [AC_DEFINE([ENABLE_ZMQ],[0],[Define to 1 to enable ZMQ functions])
           AC_MSG_WARN([libzmq version 4.x or greater not found, disabling])
           use_zmq=no])
      else
          AC_DEFINE_UNQUOTED([ENABLE_ZMQ],[0],[Define to 1 to enable ZMQ functions])
      fi
    ]
  )
else
  AC_CHECK_HEADER([openssl/crypto.h],,AC_MSG_ERROR(libcrypto headers missing))
  AC_CHECK_LIB([crypto],      [main],CRYPTO_LIBS=-lcrypto, AC_MSG_ERROR(libcrypto missing))

  AC_CHECK_HEADER([openssl/ssl.h],, AC_MSG_ERROR(libssl headers missing),)
  AC_CHECK_LIB([ssl],         [main],SSL_LIBS=-lssl, AC_MSG_ERROR(libssl missing))

  if test x$build_bitcoin_utils$build_bitcoind$bitcoin_enable_qt$use_tests != xnononono; then
    AC_CHECK_HEADER([event2/event.h],, AC_MSG_ERROR(libevent headers missing),)
    AC_CHECK_LIB([event],[main],EVENT_LIBS=-levent,AC_MSG_ERROR(libevent missing))
    if test x$TARGET_OS != xwindows; then
      AC_CHECK_LIB([event_pthreads],[main],EVENT_PTHREADS_LIBS=-levent_pthreads,AC_MSG_ERROR(libevent_pthreads missing))
    fi
  fi

  if test "x$use_zmq" = "xyes"; then
     AC_CHECK_HEADER([zmq.h],
       [AC_DEFINE([ENABLE_ZMQ],[1],[Define to 1 to enable ZMQ functions])],
       [AC_MSG_WARN([zmq.h not found, disabling zmq support])
        use_zmq=no
        AC_DEFINE([ENABLE_ZMQ],[0],[Define to 1 to enable ZMQ functions])])
     AC_CHECK_LIB([zmq],[zmq_ctx_shutdown],ZMQ_LIBS=-lzmq,
       [AC_MSG_WARN([libzmq >= 4.0 not found, disabling zmq support])
        use_zmq=no
        AC_DEFINE([ENABLE_ZMQ],[0],[Define to 1 to enable ZMQ functions])])
  else
    AC_DEFINE_UNQUOTED([ENABLE_ZMQ],[0],[Define to 1 to enable ZMQ functions])
  fi

  if test "x$use_zmq" = "xyes"; then
    dnl Assume libzmq was built for static linking
    case $host in
      *mingw*)
        ZMQ_CFLAGS="$ZMQ_CFLAGS -DZMQ_STATIC"
      ;;
    esac
  fi

  BITCOIN_QT_CHECK(AC_CHECK_LIB([protobuf] ,[main],[PROTOBUF_LIBS=-lprotobuf], BITCOIN_QT_FAIL(libprotobuf not found)))
  if test x$use_qr != xno; then
    BITCOIN_QT_CHECK([AC_CHECK_LIB([qrencode], [main],[QR_LIBS=-lqrencode], [have_qrencode=no])])
    BITCOIN_QT_CHECK([AC_CHECK_HEADER([qrencode.h],, have_qrencode=no)])
  fi
fi

save_CXXFLAGS="${CXXFLAGS}"
CXXFLAGS="${CXXFLAGS} ${CRYPTO_CFLAGS} ${SSL_CFLAGS}"
AC_CHECK_DECLS([EVP_MD_CTX_new],,,[AC_INCLUDES_DEFAULT
#include <openssl/x509_vfy.h>
])
CXXFLAGS="${save_CXXFLAGS}"

dnl univalue check

need_bundled_univalue=yes

if test x$build_bitcoin_utils$build_bitcoind$bitcoin_enable_qt$use_tests$use_bench = xnonononono; then
  need_bundled_univalue=no
else

if test x$system_univalue != xno ; then
  found_univalue=no
  if test x$use_pkgconfig = xyes; then
    : #NOP
    m4_ifdef(
      [PKG_CHECK_MODULES],
      [
        PKG_CHECK_MODULES([UNIVALUE],[libunivalue],[found_univalue=yes],[true])
      ]
    )
  else
    AC_CHECK_HEADER([univalue.h],[
      AC_CHECK_LIB([univalue],  [main],[
        UNIVALUE_LIBS=-lunivalue
        found_univalue=yes
      ],[true])
    ],[true])
  fi

  if test x$found_univalue = xyes ; then
    system_univalue=yes
    need_bundled_univalue=no
  elif test x$system_univalue = xyes ; then
    AC_MSG_ERROR([univalue not found])
  else
    system_univalue=no
  fi
fi

if test x$need_bundled_univalue = xyes ; then
  UNIVALUE_CFLAGS='-I$(srcdir)/univalue/include'
  UNIVALUE_LIBS='univalue/libunivalue.la'
fi

fi

AM_CONDITIONAL([EMBEDDED_UNIVALUE],[test x$need_bundled_univalue = xyes])
AC_SUBST(UNIVALUE_CFLAGS)
AC_SUBST(UNIVALUE_LIBS)

BITCOIN_QT_PATH_PROGS([PROTOC], [protoc],$protoc_bin_path)

AC_MSG_CHECKING([whether to build bitcoind])
AM_CONDITIONAL([BUILD_BITCOIND], [test x$build_bitcoind = xyes])
AC_MSG_RESULT($build_bitcoind)

AC_MSG_CHECKING([whether to build utils (bitcoin-cli bitcoin-tx)])
AM_CONDITIONAL([BUILD_BITCOIN_UTILS], [test x$build_bitcoin_utils = xyes])
AC_MSG_RESULT($build_bitcoin_utils)

AC_MSG_CHECKING([whether to build libraries])
AM_CONDITIONAL([BUILD_BITCOIN_LIBS], [test x$build_bitcoin_libs = xyes])
if test x$build_bitcoin_libs = xyes; then
  AC_DEFINE(HAVE_CONSENSUS_LIB, 1, [Define this symbol if the consensus lib has been built])
  AC_CONFIG_FILES([libbitcoinconsensus.pc:libbitcoinconsensus.pc.in])
fi
AC_MSG_RESULT($build_bitcoin_libs)

AC_LANG_POP

if test "x$use_ccache" != "xno"; then
  AC_MSG_CHECKING(if ccache should be used)
  if test x$CCACHE = x; then
    if test "x$use_ccache" = "xyes"; then
      AC_MSG_ERROR([ccache not found.]);
    else
      use_ccache=no
    fi
  else
    use_ccache=yes
    CC="$ac_cv_path_CCACHE $CC"
    CXX="$ac_cv_path_CCACHE $CXX"
  fi
  AC_MSG_RESULT($use_ccache)
fi
if test "x$use_ccache" = "xyes"; then
    AX_CHECK_PREPROC_FLAG([-Qunused-arguments],[CPPFLAGS="-Qunused-arguments $CPPFLAGS"])
fi

dnl enable wallet
AC_MSG_CHECKING([if wallet should be enabled])
if test x$enable_wallet != xno; then
  AC_MSG_RESULT(yes)
  AC_DEFINE_UNQUOTED([ENABLE_WALLET],[1],[Define to 1 to enable wallet functions])

else
  AC_MSG_RESULT(no)
fi

dnl enable upnp support
AC_MSG_CHECKING([whether to build with support for UPnP])
if test x$have_miniupnpc = xno; then
  if test x$use_upnp = xyes; then
     AC_MSG_ERROR("UPnP requested but cannot be built. use --without-miniupnpc")
  fi
  AC_MSG_RESULT(no)
else
  if test x$use_upnp != xno; then
    AC_MSG_RESULT(yes)
    AC_MSG_CHECKING([whether to build with UPnP enabled by default])
    use_upnp=yes
    upnp_setting=0
    if test x$use_upnp_default != xno; then
      use_upnp_default=yes
      upnp_setting=1
    fi
    AC_MSG_RESULT($use_upnp_default)
    AC_DEFINE_UNQUOTED([USE_UPNP],[$upnp_setting],[UPnP support not compiled if undefined, otherwise value (0 or 1) determines default state])
    if test x$TARGET_OS = xwindows; then
      MINIUPNPC_CPPFLAGS="-DSTATICLIB -DMINIUPNP_STATICLIB"
    fi
  else
    AC_MSG_RESULT(no)
  fi
fi

dnl these are only used when qt is enabled
BUILD_TEST_QT=""
if test x$bitcoin_enable_qt != xno; then
  dnl enable dbus support
  AC_MSG_CHECKING([whether to build GUI with support for D-Bus])
  if test x$bitcoin_enable_qt_dbus != xno; then
    AC_DEFINE([USE_DBUS],[1],[Define if dbus support should be compiled in])
  fi
  AC_MSG_RESULT($bitcoin_enable_qt_dbus)

  dnl enable qr support
  AC_MSG_CHECKING([whether to build GUI with support for QR codes])
  if test x$have_qrencode = xno; then
    if test x$use_qr = xyes; then
     AC_MSG_ERROR("QR support requested but cannot be built. use --without-qrencode")
    fi
    AC_MSG_RESULT(no)
  else
    if test x$use_qr != xno; then
      AC_MSG_RESULT(yes)
      AC_DEFINE([USE_QRCODE],[1],[Define if QR support should be compiled in])
      use_qr=yes
    else
      AC_MSG_RESULT(no)
    fi
  fi

  if test x$XGETTEXT = x; then
    AC_MSG_WARN("xgettext is required to update qt translations")
  fi

  AC_MSG_CHECKING([whether to build test_bitcoin-qt])
  if test x$use_gui_tests$bitcoin_enable_qt_test = xyesyes; then
    AC_MSG_RESULT([yes])
    BUILD_TEST_QT="yes"
  else
    AC_MSG_RESULT([no])
  fi
fi

AM_CONDITIONAL([ENABLE_ZMQ], [test "x$use_zmq" = "xyes"])

AC_MSG_CHECKING([whether to build test_bitcoin])
if test x$use_tests = xyes; then
  AC_MSG_RESULT([yes])
  BUILD_TEST="yes"
else
  AC_MSG_RESULT([no])
  BUILD_TEST=""
fi

AC_MSG_CHECKING([whether to reduce exports])
if test x$use_reduce_exports = xyes; then
  AC_MSG_RESULT([yes])
else
  AC_MSG_RESULT([no])
fi

if test x$build_bitcoin_utils$build_bitcoin_libs$build_bitcoind$bitcoin_enable_qt$use_bench$use_tests = xnononononono; then
  AC_MSG_ERROR([No targets! Please specify at least one of: --with-utils --with-libs --with-daemon --with-gui --enable-bench or --enable-tests])
fi

AM_CONDITIONAL([TARGET_DARWIN], [test x$TARGET_OS = xdarwin])
AM_CONDITIONAL([BUILD_DARWIN], [test x$BUILD_OS = xdarwin])
AM_CONDITIONAL([TARGET_WINDOWS], [test x$TARGET_OS = xwindows])
AM_CONDITIONAL([ENABLE_WALLET],[test x$enable_wallet = xyes])
AM_CONDITIONAL([ENABLE_TESTS],[test x$BUILD_TEST = xyes])
AM_CONDITIONAL([ENABLE_QT],[test x$bitcoin_enable_qt = xyes])
AM_CONDITIONAL([ENABLE_QT_TESTS],[test x$BUILD_TEST_QT = xyes])
AM_CONDITIONAL([ENABLE_BENCH],[test x$use_bench = xyes])
AM_CONDITIONAL([USE_QRCODE], [test x$use_qr = xyes])
AM_CONDITIONAL([USE_LCOV],[test x$use_lcov = xyes])
AM_CONDITIONAL([GLIBC_BACK_COMPAT],[test x$use_glibc_compat = xyes])
AM_CONDITIONAL([HARDEN],[test x$use_hardening = xyes])
AM_CONDITIONAL([ENABLE_HWCRC32],[test x$enable_hwcrc32 = xyes])
AM_CONDITIONAL([EXPERIMENTAL_ASM],[test x$experimental_asm = xyes])

AC_DEFINE(CLIENT_VERSION_MAJOR, _CLIENT_VERSION_MAJOR, [Major version])
AC_DEFINE(CLIENT_VERSION_MINOR, _CLIENT_VERSION_MINOR, [Minor version])
AC_DEFINE(CLIENT_VERSION_REVISION, _CLIENT_VERSION_REVISION, [Build revision])
AC_DEFINE(CLIENT_VERSION_BUILD, _CLIENT_VERSION_BUILD, [Version Build])
AC_DEFINE(CLIENT_VERSION_IS_RELEASE, _CLIENT_VERSION_IS_RELEASE, [Version is release])
AC_DEFINE(COPYRIGHT_YEAR, _COPYRIGHT_YEAR, [Copyright year])
AC_DEFINE(COPYRIGHT_HOLDERS, "_COPYRIGHT_HOLDERS", [Copyright holder(s) before %s replacement])
AC_DEFINE(COPYRIGHT_HOLDERS_SUBSTITUTION, "_COPYRIGHT_HOLDERS_SUBSTITUTION", [Replacement for %s in copyright holders string])
define(_COPYRIGHT_HOLDERS_FINAL, [patsubst(_COPYRIGHT_HOLDERS, [%s], [_COPYRIGHT_HOLDERS_SUBSTITUTION])])
AC_DEFINE(COPYRIGHT_HOLDERS_FINAL, "_COPYRIGHT_HOLDERS_FINAL", [Copyright holder(s)])
AC_SUBST(CLIENT_VERSION_MAJOR, _CLIENT_VERSION_MAJOR)
AC_SUBST(CLIENT_VERSION_MINOR, _CLIENT_VERSION_MINOR)
AC_SUBST(CLIENT_VERSION_REVISION, _CLIENT_VERSION_REVISION)
AC_SUBST(CLIENT_VERSION_BUILD, _CLIENT_VERSION_BUILD)
AC_SUBST(CLIENT_VERSION_IS_RELEASE, _CLIENT_VERSION_IS_RELEASE)
AC_SUBST(COPYRIGHT_YEAR, _COPYRIGHT_YEAR)
AC_SUBST(COPYRIGHT_HOLDERS, "_COPYRIGHT_HOLDERS")
AC_SUBST(COPYRIGHT_HOLDERS_SUBSTITUTION, "_COPYRIGHT_HOLDERS_SUBSTITUTION")
AC_SUBST(COPYRIGHT_HOLDERS_FINAL, "_COPYRIGHT_HOLDERS_FINAL")
AC_SUBST(BITCOIN_DAEMON_NAME)
AC_SUBST(BITCOIN_GUI_NAME)
AC_SUBST(BITCOIN_CLI_NAME)
AC_SUBST(BITCOIN_TX_NAME)

AC_SUBST(RELDFLAGS)
AC_SUBST(ERROR_CXXFLAGS)
AC_SUBST(HARDENED_CXXFLAGS)
AC_SUBST(HARDENED_CPPFLAGS)
AC_SUBST(HARDENED_LDFLAGS)
AC_SUBST(PIC_FLAGS)
AC_SUBST(PIE_FLAGS)
AC_SUBST(SSE42_CXXFLAGS)
AC_SUBST(LIBTOOL_APP_LDFLAGS)
AC_SUBST(USE_UPNP)
AC_SUBST(USE_QRCODE)
AC_SUBST(BOOST_LIBS)
AC_SUBST(TESTDEFS)
AC_SUBST(LEVELDB_TARGET_FLAGS)
AC_SUBST(MINIUPNPC_CPPFLAGS)
AC_SUBST(MINIUPNPC_LIBS)
AC_SUBST(CRYPTO_LIBS)
AC_SUBST(SSL_LIBS)
AC_SUBST(EVENT_LIBS)
AC_SUBST(EVENT_PTHREADS_LIBS)
AC_SUBST(ZMQ_LIBS)
AC_SUBST(PROTOBUF_LIBS)
AC_SUBST(QR_LIBS)
AC_CONFIG_FILES([Makefile src/Makefile doc/man/Makefile share/setup.nsi share/qt/Info.plist test/config.ini])
AC_CONFIG_FILES([contrib/devtools/split-debug.sh],[chmod +x contrib/devtools/split-debug.sh])
AC_CONFIG_FILES([doc/Doxyfile])
AC_CONFIG_LINKS([contrib/filter-lcov.py:contrib/filter-lcov.py])
AC_CONFIG_LINKS([test/functional/test_runner.py:test/functional/test_runner.py])
AC_CONFIG_LINKS([test/util/bitcoin-util-test.py:test/util/bitcoin-util-test.py])

dnl boost's m4 checks do something really nasty: they export these vars. As a
dnl result, they leak into secp256k1's configure and crazy things happen.
dnl Until this is fixed upstream and we've synced, we'll just un-export them.
CPPFLAGS_TEMP="$CPPFLAGS"
unset CPPFLAGS
CPPFLAGS="$CPPFLAGS_TEMP"

LDFLAGS_TEMP="$LDFLAGS"
unset LDFLAGS
LDFLAGS="$LDFLAGS_TEMP"

LIBS_TEMP="$LIBS"
unset LIBS
LIBS="$LIBS_TEMP"

PKGCONFIG_PATH_TEMP="$PKG_CONFIG_PATH"
unset PKG_CONFIG_PATH
PKG_CONFIG_PATH="$PKGCONFIG_PATH_TEMP"

PKGCONFIG_LIBDIR_TEMP="$PKG_CONFIG_LIBDIR"
unset PKG_CONFIG_LIBDIR
PKG_CONFIG_LIBDIR="$PKGCONFIG_LIBDIR_TEMP"

if test x$need_bundled_univalue = xyes; then
  AC_CONFIG_SUBDIRS([src/univalue])
fi

ac_configure_args="${ac_configure_args} --disable-shared --with-pic --with-bignum=no --enable-module-recovery --disable-jni"
AC_CONFIG_SUBDIRS([src/secp256k1])

AC_OUTPUT

dnl Taken from https://wiki.debian.org/RpathIssue
case $host in
   *-*-linux-gnu)
     AC_MSG_RESULT([Fixing libtool for -rpath problems.])
     sed < libtool > libtool-2 \
     's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" -D__LIBTOOL_IS_A_FOOL__ "/'
     mv libtool-2 libtool
     chmod 755 libtool
   ;;
esac

dnl Replace the BUILDDIR path with the correct Windows path if compiling on Native Windows
case ${OS} in
   *Windows*)
     sed  's/BUILDDIR="\/\([[a-z]]\)/BUILDDIR="\1:/'  test/config.ini > test/config-2.ini
     mv test/config-2.ini test/config.ini
   ;;
esac

echo 
echo "Options used to compile and link:"
echo "  with wallet   = $enable_wallet"
echo "  with gui / qt = $bitcoin_enable_qt"
if test x$bitcoin_enable_qt != xno; then
    echo "    qt version  = $bitcoin_qt_got_major_vers"
    echo "    with qr     = $use_qr"
fi
echo "  with zmq      = $use_zmq"
echo "  with test     = $use_tests"
echo "  with bench    = $use_bench"
echo "  with upnp     = $use_upnp"
echo "  debug enabled = $enable_debug"
echo "  werror        = $enable_werror"
echo 
echo "  target os     = $TARGET_OS"
echo "  build os      = $BUILD_OS"
echo
echo "  CC            = $CC"
echo "  CFLAGS        = $CFLAGS"
echo "  CPPFLAGS      = $CPPFLAGS"
echo "  CXX           = $CXX"
echo "  CXXFLAGS      = $CXXFLAGS"
echo "  LDFLAGS       = $LDFLAGS"
echo "  ARFLAGS       = $ARFLAGS"
echo 

Repository Tools
---------------------

### [Developer tools](/contrib/devtools) ###
Specific tools for developers working on this repository.
Contains the script `github-merge.py` for merging GitHub pull requests securely and signing them using GPG.

### [Verify-Commits](/contrib/verify-commits) ###
Tool to verify that every merge commit was signed by a developer using the above `github-merge.py` script.

### [Linearize](/contrib/linearize) ###
Construct a linear, no-fork, best version of the blockchain.

### [Qos](/contrib/qos) ###

A Linux bash script that will set up traffic control (tc) to limit the outgoing bandwidth for connections to the Bitcoin network. This means one can have an always-on bitcoind instance running, and another local bitcoind/bitcoin-qt instance which connects to this node and receives blocks from it.

### [Seeds](/contrib/seeds) ###
Utility to generate the pnSeed[] array that is compiled into the client.

Build Tools and Keys
---------------------

### [Debian](/contrib/debian) ###
Contains files used to package bitcoind/bitcoin-qt
for Debian-based Linux systems. If you compile bitcoind/bitcoin-qt yourself, there are some useful files here.

### [Gitian-descriptors](/contrib/gitian-descriptors) ###
Notes on getting Gitian builds up and running using KVM.

### [Gitian-keys](/contrib/gitian-keys)
PGP keys used for signing Bitcoin Core [Gitian release](/doc/release-process.md) results.

### [MacDeploy](/contrib/macdeploy) ###
Scripts and notes for Mac builds. 

### [RPM](/contrib/rpm) ###
RPM spec file for building bitcoin-core on RPM based distributions

### [Gitian-build](/contrib/gitian-build.sh) ###
Script for running full Gitian builds.

Test and Verify Tools 
---------------------

### [TestGen](/contrib/testgen) ###
Utilities to generate test vectors for the data-driven Bitcoin tests.

### [Verify Binaries](/contrib/verifybinaries) ###
This script attempts to download and verify the signature file SHA256SUMS.asc from bitcoin.org.

Debian
====================
This directory contains files used to package bitcoind/bitcoin-qt
for Debian-based Linux systems. If you compile bitcoind/bitcoin-qt yourself, there are some useful files here.

## bitcoin: URI support ##


bitcoin-qt.desktop  (Gnome / Open Desktop)
To install:

	sudo desktop-file-install bitcoin-qt.desktop
	sudo update-desktop-database

If you build yourself, you will either need to modify the paths in
the .desktop file or copy or symlink your bitcoin-qt binary to `/usr/bin`
and the `../../share/pixmaps/bitcoin128.png` to `/usr/share/pixmaps`

bitcoin-qt.protocol (KDE)

[Desktop Entry]
Encoding=UTF-8
Name=Yenten Core
Comment=Connect to the Yenten P2P Network
Comment[de]=Verbinde mit dem Yenten peer-to-peer Netzwerk
Comment[fr]=Yenten, monnaie virtuelle cryptographique pair à pair
Comment[tr]=Yenten, eşten eşe kriptografik sanal para birimi
Exec=yenten-qt %u
Terminal=false
Type=Application
Icon=yenten128
MimeType=x-scheme-handler/yenten;
Categories=Office;Finance;

yenten (2.0.0-trusty1) trusty; urgency=medium

  * Release Yenten 2.0.0.

 -- onokatio <onokatio@gmail.com>  Fri, 05 May 2017 13:28:00 -0400

7

Source: yenten
Section: utils
Priority: optional
Maintainer: onokatio <onokatio@gmail.com>
Uploaders: onokatio <onokatio@gmail.com>
Build-Depends: debhelper,
 devscripts,
 automake,
 libtool,
 bash-completion,
 libdb4.8++-dev,
 libssl-dev,
 pkg-config,
 libevent-dev,
 libboost-system1.48-dev | libboost-system-dev (>> 1.47),
 libboost-filesystem1.48-dev | libboost-filesystem-dev (>> 1.47),
 libboost-program-options1.48-dev | libboost-program-options-dev (>> 1.47),
 libboost-thread1.48-dev | libboost-thread-dev (>> 1.47),
 libboost-test1.48-dev | libboost-test-dev (>> 1.47),
 libboost-chrono1.48-dev | libboost-chrono-dev (>> 1.47),
 libminiupnpc8-dev | libminiupnpc-dev,
 qt4-qmake, libqt4-dev,
 qttools5-dev-tools, qttools5-dev,
 libqrencode-dev,
 libprotobuf-dev, protobuf-compiler,
 python,
 libzmq3-dev
Standards-Version: 3.9.2
Homepage: https://conan-equal-newone.github.io/yenten/
Vcs-Git: git://github.com/conan-equal-newone/yenten.git
Vcs-Browser: https://github.com/conan-equal-newone/yenten

Package: yentend
Architecture: any
Depends: ${shlibs:Depends}, ${misc:Depends}
Description: peer-to-peer network based digital currency - daemon
 Yenten is a free open source peer-to-peer electronic cash system that
 is completely decentralized, without the need for a central server or
 trusted parties.  Users hold the crypto keys to their own money and
 transact directly with each other, with the help of a P2P network to
 check for double-spending.
 .
 This package provides the daemon, bitcoind, and the CLI tool
 yenten-cli to interact with the daemon.

Package: yenten-qt
Architecture: any
Depends: ${shlibs:Depends}, ${misc:Depends}
Description: peer-to-peer network based digital currency - Qt GUI
 Yenten is a free open source peer-to-peer electronic cash system that
 is completely decentralized, without the need for a central server or
 trusted parties.  Users hold the crypto keys to their own money and
 transact directly with each other, with the help of a P2P network to
 check for double-spending.
 .
 This package provides Yenten-Qt, a GUI for Bitcoin based on Qt.

Package: yenten-tx
Architecture: any
Depends: ${shlibs:Depends}, ${misc:Depends}
Description: peer-to-peer digital currency - standalone transaction tool
 Yenten is a free open source peer-to-peer electronic cash system that
 is completely decentralized, without the need for a central server or
 trusted parties.  Users hold the crypto keys to their own money and
 transact directly with each other, with the help of a P2P network to
 check for double-spending.
 .
 This package provides yenten-tx, a command-line transaction creation
 tool which can be used without a bitcoin daemon.  Some means of
 exchanging minimal transaction data with peers is still required.

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Yenten
Upstream-Contact: onokatio <onokatio@gmail.com>
Source: https://github.com/conan-equal-newone/yenten

Files: *
Copyright: 2009-2017, Bitcoin Core Developers & 2018, Yenten Core Developers
License: Expat
Comment: The Yenten Core Developers encompasses the current developers listed on yenten.info,
         as well as the numerous contributors to the project.

Files: debian/*
Copyright: 2010-2011, Jonas Smedegaard <dr@jones.dk>
           2011, Matt Corallo <matt@bluematt.me>
					 2018, 2018, Yenten Core Developers
License: GPL-2+

Files: src/qt/res/icons/add.png
       src/qt/res/icons/address-book.png
       src/qt/res/icons/chevron.png
       src/qt/res/icons/configure.png
       src/qt/res/icons/debugwindow.png
       src/qt/res/icons/edit.png
       src/qt/res/icons/editcopy.png
       src/qt/res/icons/editpaste.png
       src/qt/res/icons/export.png
       src/qt/res/icons/eye.png
       src/qt/res/icons/filesave.png
       src/qt/res/icons/history.png
       src/qt/res/icons/info.png
       src/qt/res/icons/key.png
       src/qt/res/icons/lock_*.png
       src/qt/res/icons/open.png
       src/qt/res/icons/overview.png
       src/qt/res/icons/quit.png
       src/qt/res/icons/receive.png
       src/qt/res/icons/remove.png
       src/qt/res/icons/send.png
       src/qt/res/icons/synced.png
       src/qt/res/icons/transaction*.png
       src/qt/res/icons/tx_output.png
       src/qt/res/icons/warning.png
Copyright: Stephen Hutchings (and more)
           http://typicons.com
License: Expat
Comment: Site: https://github.com/stephenhutchings/typicons.font

Files: src/qt/res/icons/connect*.png
       src/qt/res/src/connect-*.svg
       src/qt/res/icons/network_disabled.png
       src/qt/res/src/network_disabled.svg
Copyright: Marco Falke
           Luke Dashjr
License: Expat
Comment: Inspired by Stephan Hutchings Typicons

Files: src/qt/res/icons/tx_mined.png
       src/qt/res/src/mine.svg
       src/qt/res/icons/fontbigger.png
       src/qt/res/icons/fontsmaller.png
       src/qt/res/icons/hd_disabled.png
       src/qt/res/src/hd_disabled.svg
       src/qt/res/icons/hd_enabled.png
       src/qt/res/src/hd_enabled.svg
Copyright: Jonas Schnelli
License: Expat
Comment:

Files: src/qt/res/icons/clock*.png
       src/qt/res/icons/eye_*.png
       src/qt/res/icons/verify.png
       src/qt/res/icons/tx_in*.png
       src/qt/res/src/clock_*.svg
       src/qt/res/src/tx_*.svg
       src/qt/res/src/verify.svg
Copyright: Stephan Hutching, Jonas Schnelli
License: Expat
Comment: Modifications of Stephan Hutchings Typicons

Files: src/qt/res/icons/about.png
       src/qt/res/icons/bitcoin.*
       share/pixmaps/bitcoin*
       src/qt/res/src/bitcoin.svg
Copyright: Bitboy, Jonas Schnelli
License: public-domain
Comment: Site: https://bitcointalk.org/?topic=1756.0


License: Expat
 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including
 without limitation the rights to use, copy, modify, merge, publish,
 distribute, sublicense, and/or sell copies of the Software, and to
 permit persons to whom the Software is furnished to do so, subject to
 the following conditions:
 .
 The above copyright notice and this permission notice shall be included
 in all copies or substantial portions of the Software.
 .
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

License: GPL-2+
 This program is free software; you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
 Free Software Foundation; either version 2, or (at your option) any
 later version.
 .
 This program is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 General Public License for more details.
Comment:
 On Debian systems the GNU General Public License (GPL) version 2 is
 located in '/usr/share/common-licenses/GPL-2'.
 .
 You should have received a copy of the GNU General Public License along
 with this program.  If not, see <http://www.gnu.org/licenses/>.

License: GPL-3+
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU General Public License, Version 3 or any
 later version published by the Free Software Foundation.
Comment:
 On Debian systems the GNU General Public License (GPL) version 3 is
 located in '/usr/share/common-licenses/GPL-3'.
 .
 You should have received a copy of the GNU General Public License along
 with this program.  If not, see <http://www.gnu.org/licenses/>.

License: public-domain
 This work is in the public domain.

##
## yenten.conf configuration file. Lines beginning with # are comments.
##
 
# Network-related settings:

# Run on the test network instead of the real yenten network.
#testnet=0

# Run a regression test network
#regtest=0

# Connect via a SOCKS5 proxy
#proxy=127.0.0.1:9050

# Bind to given address and always listen on it. Use [host]:port notation for IPv6
#bind=<addr>

# Bind to given address and whitelist peers connecting to it. Use [host]:port notation for IPv6
#whitebind=<addr>

##############################################################
##            Quick Primer on addnode vs connect            ##
##  Let's say for instance you use addnode=4.2.2.4          ##
##  addnode will connect you to and tell you about the      ##
##    nodes connected to 4.2.2.4.  In addition it will tell ##
##    the other nodes connected to it that you exist so     ##
##    they can connect to you.                              ##
##  connect will not do the above when you 'connect' to it. ##
##    It will *only* connect you to 4.2.2.4 and no one else.##
##                                                          ##
##  So if you're behind a firewall, or have other problems  ##
##  finding nodes, add some using 'addnode'.                ##
##                                                          ##
##  If you want to stay private, use 'connect' to only      ##
##  connect to "trusted" nodes.                             ##
##                                                          ##
##  If you run multiple nodes on a LAN, there's no need for ##
##  all of them to open lots of connections.  Instead       ##
##  'connect' them all to one node that is port forwarded   ##
##  and has lots of connections.                            ##
##       Thanks goes to [Noodle] on Freenode.               ##
##############################################################

# Use as many addnode= settings as you like to connect to specific peers
#addnode=69.164.218.197
#addnode=10.0.0.2:8333

# Alternatively use as many connect= settings as you like to connect ONLY to specific peers
#connect=69.164.218.197
#connect=10.0.0.1:8333

# Listening mode, enabled by default except when 'connect' is being used
#listen=1

# Maximum number of inbound+outbound connections.
#maxconnections=

#
# JSON-RPC options (for controlling a running Yenten/yentend process)
#

# server=1 tells Yenten-Qt and yentend to accept JSON-RPC commands
#server=0

# Bind to given address to listen for JSON-RPC connections. Use [host]:port notation for IPv6.
# This option can be specified multiple times (default: bind to all interfaces)
#rpcbind=<addr>

# If no rpcpassword is set, rpc cookie auth is sought. The default `-rpccookiefile` name
# is .cookie and found in the `-datadir` being used for yentend. This option is typically used
# when the server and client are run as the same user.
#
# If not, you must set rpcuser and rpcpassword to secure the JSON-RPC api. The first
# method(DEPRECATED) is to set this pair for the server and client:
#rpcuser=Ulysseys
#rpcpassword=YourSuperGreatPasswordNumber_DO_NOT_USE_THIS_OR_YOU_WILL_GET_ROBBED_385593
#
# The second method `rpcauth` can be added to server startup argument. It is set at intialization time
# using the output from the script in share/rpcuser/rpcuser.py after providing a username:
#
# ./share/rpcuser/rpcuser.py alice
# String to be appended to yenten.conf:
# rpcauth=alice:f7efda5c189b999524f151318c0c86$d5b51b3beffbc02b724e5d095828e0bc8b2456e9ac8757ae3211a5d9b16a22ae
# Your password:
# DONT_USE_THIS_YOU_WILL_GET_ROBBED_8ak1gI25KFTvjovL3gAM967mies3E=
#
# On client-side, you add the normal user/password pair to send commands:
#rpcuser=alice
#rpcpassword=DONT_USE_THIS_YOU_WILL_GET_ROBBED_8ak1gI25KFTvjovL3gAM967mies3E=
#
# You can even add multiple entries of these to the server conf file, and client can use any of them:
# rpcauth=bob:b2dd077cb54591a2f3139e69a897ac$4e71f08d48b4347cf8eff3815c0e25ae2e9a4340474079f55705f40574f4ec99

# How many seconds yenten will wait for a complete RPC HTTP request.
# after the HTTP connection is established. 
#rpcclienttimeout=30

# By default, only RPC connections from localhost are allowed.
# Specify as many rpcallowip= settings as you like to allow connections from other hosts,
# either as a single IPv4/IPv6 or with a subnet specification.

# NOTE: opening up the RPC port to hosts outside your local trusted network is NOT RECOMMENDED,
# because the rpcpassword is transmitted over the network unencrypted.

# server=1 tells Yenten-Qt to accept JSON-RPC commands.
# it is also read by yentend to determine if RPC should be enabled 
#rpcallowip=10.1.1.34/255.255.255.0
#rpcallowip=1.2.3.4/24
#rpcallowip=2001:db8:85a3:0:0:8a2e:370:7334/96

# Listen for RPC connections on this TCP port:
#rpcport=8332

# You can use Yenten or yentend to send commands to Yenten/yentend
# running on another host using this option:
#rpcconnect=127.0.0.1

# Create transactions that have enough fees so they are likely to begin confirmation within n blocks (default: 6).
# This setting is over-ridden by the -paytxfee option.
#txconfirmtarget=n

# Miscellaneous options

# Pre-generate this many public/private key pairs, so wallet backups will be valid for
# both prior transactions and several dozen future transactions.
#keypool=100

# Pay an optional transaction fee every time you send yentens.  Transactions with fees
# are more likely than free transactions to be included in generated blocks, so may
# be validated sooner.
#paytxfee=0.00

# Enable pruning to reduce storage requirements by deleting old blocks. 
# This mode is incompatible with -txindex and -rescan.
# 0 = default (no pruning).
# 1 = allows manual pruning via RPC.
# >=550 = target to stay under in MiB. 
#prune=550

# User interface options

# Start Yenten minimized
#min=1

# Minimize to the system tray
#minimizetotray=1

# Configuration file for git-buildpackage and friends

[DEFAULT]
pristine-tar = True
sign-tags = True

0xxx: Grabbed from upstream development.
1xxx: Possibly relevant for upstream adoption.
2xxx: Only relevant for official Debian release.

#!/usr/bin/make -f
# -*- mode: makefile; coding: utf-8 -*-

#DEB_MAKE_CHECK_TARGET = test_bitcoin
#build/bitcoind::
#	$(if $(filter nocheck,$(DEB_BUILD_OPTIONS)),,src/test_bitcoin)

%:
	dh --with bash-completion $@

override_dh_auto_clean:
	if [ -f Makefile ]; then $(MAKE) distclean; fi
	rm -rf Makefile.in aclocal.m4 configure src/Makefile.in src/bitcoin-config.h.in src/build-aux src/qt/Makefile.in src/qt/test/Makefile.in src/test/Makefile.in

QT=$(shell dpkg-vendor --derives-from Ubuntu && echo qt4 || echo qt5)

# Yea, autogen should be run on the source archive, but I like doing git archive
override_dh_auto_configure:
	./autogen.sh
	./configure --with-gui=$(QT)

override_dh_auto_test:
	make check

3.0 (quilt)

# Run the "uscan" command to check for upstream updates and more.
version=3
# use qa.debian.org redirector; see man uscan
opts=uversionmangle=s/(\d)(alpha|beta|rc)/$1~$2/,dversionmangle=s/~dfsg\d*// \
 http://githubredir.debian.net/github/conan-equal-newone/yenten v(.*).tar.gz

usr/local/bin/yenten-qt usr/bin
share/pixmaps/yenten32.xpm usr/share/pixmaps
share/pixmaps/yenten16.xpm usr/share/pixmaps
share/pixmaps/yenten128.png usr/share/pixmaps
debian/yenten-qt.desktop usr/share/applications
debian/yenten-qt.protocol usr/share/kde4/services/

# Linked code is Expat - only Debian packaging is GPL-2+
yenten-qt: possible-gpl-code-linked-with-openssl

doc/man/yenten-qt.1

[Protocol]
exec=yenten-qt '%u'
protocol=yenten
input=none
output=none
helper=true
listing=
reading=false
writing=false
makedir=false
deleting=false

contrib/yenten-tx.bash-completion	yenten-tx

usr/local/bin/yenten-tx usr/bin

doc/man/yenten-tx.1

contrib/yentend.bash-completion	yentend
contrib/yenten-cli.bash-completion	yenten-cli

debian/examples/yenten.conf

usr/local/bin/yentend usr/bin
usr/local/bin/yenten-cli usr/bin

# Linked code is Expat - only Debian packaging is GPL-2+
yentend: possible-gpl-code-linked-with-openssl

doc/man/yentend.1
doc/man/yenten-cli.1

Contents
========
This directory contains tools for developers working on this repository.

check-doc.py
============

Check if all command line args are documented. The return value indicates the
number of undocumented args.

clang-format-diff.py
===================

A script to format unified git diffs according to [.clang-format](../../src/.clang-format).

For instance, to format the last commit with 0 lines of context,
the script should be called from the git root folder as follows.

```
git diff -U0 HEAD~1.. | ./contrib/devtools/clang-format-diff.py -p1 -i -v
```

copyright\_header.py
====================

Provides utilities for managing copyright headers of `The Bitcoin Core
developers` in repository source files. It has three subcommands:

```
$ ./copyright_header.py report <base_directory> [verbose]
$ ./copyright_header.py update <base_directory>
$ ./copyright_header.py insert <file>
```
Running these subcommands without arguments displays a usage string.

copyright\_header.py report \<base\_directory\> [verbose]
---------------------------------------------------------

Produces a report of all copyright header notices found inside the source files
of a repository. Useful to quickly visualize the state of the headers.
Specifying `verbose` will list the full filenames of files of each category.

copyright\_header.py update \<base\_directory\> [verbose]
---------------------------------------------------------
Updates all the copyright headers of `The Bitcoin Core developers` which were
changed in a year more recent than is listed. For example:
```
// Copyright (c) <firstYear>-<lastYear> The Bitcoin Core developers
```
will be updated to:
```
// Copyright (c) <firstYear>-<lastModifiedYear> The Bitcoin Core developers
```
where `<lastModifiedYear>` is obtained from the `git log` history.

This subcommand also handles copyright headers that have only a single year. In
those cases:
```
// Copyright (c) <year> The Bitcoin Core developers
```
will be updated to:
```
// Copyright (c) <year>-<lastModifiedYear> The Bitcoin Core developers
```
where the update is appropriate.

copyright\_header.py insert \<file\>
------------------------------------
Inserts a copyright header for `The Bitcoin Core developers` at the top of the
file in either Python or C++ style as determined by the file extension. If the
file is a Python file and it has  `#!` starting the first line, the header is
inserted in the line below it.

The copyright dates will be set to be `<year_introduced>-<current_year>` where
`<year_introduced>` is according to the `git log` history. If
`<year_introduced>` is equal to `<current_year>`, it will be set as a single
year rather than two hyphenated years.

If the file already has a copyright for `The Bitcoin Core developers`, the
script will exit.

gen-manpages.sh
===============

A small script to automatically create manpages in ../../doc/man by running the release binaries with the -help option.
This requires help2man which can be found at: https://www.gnu.org/software/help2man/

git-subtree-check.sh
====================

Run this script from the root of the repository to verify that a subtree matches the contents of
the commit it claims to have been updated to.

To use, make sure that you have fetched the upstream repository branch in which the subtree is
maintained:
* for `src/secp256k1`: https://github.com/bitcoin-core/secp256k1.git (branch master)
* for `src/leveldb`: https://github.com/bitcoin-core/leveldb.git (branch bitcoin-fork)
* for `src/univalue`: https://github.com/bitcoin-core/univalue.git (branch master)
* for `src/crypto/ctaes`: https://github.com/bitcoin-core/ctaes.git (branch master)

Usage: `git-subtree-check.sh DIR (COMMIT)`

`COMMIT` may be omitted, in which case `HEAD` is used.

github-merge.py
===============

A small script to automate merging pull-requests securely and sign them with GPG.

For example:

  ./github-merge.py 3077

(in any git repository) will help you merge pull request #3077 for the
bitcoin/bitcoin repository.

What it does:
* Fetch master and the pull request.
* Locally construct a merge commit.
* Show the diff that merge results in.
* Ask you to verify the resulting source tree (so you can do a make
check or whatever).
* Ask you whether to GPG sign the merge commit.
* Ask you whether to push the result upstream.

This means that there are no potential race conditions (where a
pullreq gets updated while you're reviewing it, but before you click
merge), and when using GPG signatures, that even a compromised GitHub
couldn't mess with the sources.

Setup
---------
Configuring the github-merge tool for the bitcoin repository is done in the following way:

    git config githubmerge.repository bitcoin/bitcoin
    git config githubmerge.testcmd "make -j4 check" (adapt to whatever you want to use for testing)
    git config --global user.signingkey mykeyid (if you want to GPG sign)

optimize-pngs.py
================

A script to optimize png files in the bitcoin
repository (requires pngcrush).

security-check.py and test-security-check.py
============================================

Perform basic ELF security checks on a series of executables.

symbol-check.py
===============

A script to check that the (Linux) executables produced by gitian only contain
allowed gcc, glibc and libstdc++ version symbols. This makes sure they are
still compatible with the minimum supported Linux distribution versions.

Example usage after a gitian build:

    find ../gitian-builder/build -type f -executable | xargs python contrib/devtools/symbol-check.py 

If only supported symbols are used the return value will be 0 and the output will be empty.

If there are 'unsupported' symbols, the return value will be 1 a list like this will be printed:

    .../64/test_bitcoin: symbol memcpy from unsupported version GLIBC_2.14
    .../64/test_bitcoin: symbol __fdelt_chk from unsupported version GLIBC_2.15
    .../64/test_bitcoin: symbol std::out_of_range::~out_of_range() from unsupported version GLIBCXX_3.4.15
    .../64/test_bitcoin: symbol _ZNSt8__detail15_List_nod from unsupported version GLIBCXX_3.4.15

update-translations.py
======================

Run this script from the root of the repository to update all translations from transifex.
It will do the following automatically:

- fetch all translations
- post-process them into valid and committable format
- add missing translations to the build system (TODO)

See doc/translation-process.md for more information.

#!/usr/bin/env python
# Copyright (c) 2015-2016 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.

'''
This checks if all command line args are documented.
Return value is 0 to indicate no error.

Author: @MarcoFalke
'''

from subprocess import check_output
import re

FOLDER_GREP = 'src'
FOLDER_TEST = 'src/test/'
CMD_ROOT_DIR = '`git rev-parse --show-toplevel`/%s' % FOLDER_GREP
CMD_GREP_ARGS = r"egrep -r -I '(map(Multi)?Args(\.count\(|\[)|Get(Bool)?Arg\()\"\-[^\"]+?\"' %s | grep -v '%s'" % (CMD_ROOT_DIR, FOLDER_TEST)
CMD_GREP_DOCS = r"egrep -r -I 'HelpMessageOpt\(\"\-[^\"=]+?(=|\")' %s" % (CMD_ROOT_DIR)
REGEX_ARG = re.compile(r'(?:map(?:Multi)?Args(?:\.count\(|\[)|Get(?:Bool)?Arg\()\"(\-[^\"]+?)\"')
REGEX_DOC = re.compile(r'HelpMessageOpt\(\"(\-[^\"=]+?)(?:=|\")')
# list unsupported, deprecated and duplicate args as they need no documentation
SET_DOC_OPTIONAL = set(['-rpcssl', '-benchmark', '-h', '-help', '-socks', '-tor', '-debugnet', '-whitelistalwaysrelay', '-prematurewitness', '-walletprematurewitness', '-promiscuousmempoolflags', '-blockminsize', '-dbcrashratio', '-forcecompactdb'])

def main():
  used = check_output(CMD_GREP_ARGS, shell=True)
  docd = check_output(CMD_GREP_DOCS, shell=True)

  args_used = set(re.findall(REGEX_ARG,used))
  args_docd = set(re.findall(REGEX_DOC,docd)).union(SET_DOC_OPTIONAL)
  args_need_doc = args_used.difference(args_docd)
  args_unknown = args_docd.difference(args_used)

  print "Args used        : %s" % len(args_used)
  print "Args documented  : %s" % len(args_docd)
  print "Args undocumented: %s" % len(args_need_doc)
  print args_need_doc
  print "Args unknown     : %s" % len(args_unknown)
  print args_unknown

  exit(len(args_need_doc))

if __name__ == "__main__":
    main()

#!/usr/bin/env python
#
#===- clang-format-diff.py - ClangFormat Diff Reformatter ----*- python -*--===#
#
#                     The LLVM Compiler Infrastructure
#
# This file is distributed under the University of Illinois Open Source
# License.
#
#           ============================================================
#
# University of Illinois/NCSA
# Open Source License
#
# Copyright (c) 2007-2015 University of Illinois at Urbana-Champaign.
# All rights reserved.
#
# Developed by:
#
#     LLVM Team
#
#     University of Illinois at Urbana-Champaign
#
#     http://llvm.org
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal with
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
# of the Software, and to permit persons to whom the Software is furnished to do
# so, subject to the following conditions:
#
#     * Redistributions of source code must retain the above copyright notice,
#       this list of conditions and the following disclaimers.
#
#     * Redistributions in binary form must reproduce the above copyright notice,
#       this list of conditions and the following disclaimers in the
#       documentation and/or other materials provided with the distribution.
#
#     * Neither the names of the LLVM Team, University of Illinois at
#       Urbana-Champaign, nor the names of its contributors may be used to
#       endorse or promote products derived from this Software without specific
#       prior written permission.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
# CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
# SOFTWARE.
#
#           ============================================================
#
#===------------------------------------------------------------------------===#

r"""
ClangFormat Diff Reformatter
============================

This script reads input from a unified diff and reformats all the changed
lines. This is useful to reformat all the lines touched by a specific patch.
Example usage for git/svn users:

  git diff -U0 HEAD^ | clang-format-diff.py -p1 -i
  svn diff --diff-cmd=diff -x-U0 | clang-format-diff.py -i

"""

import argparse
import difflib
import re
import string
import subprocess
import StringIO
import sys


# Change this to the full path if clang-format is not on the path.
binary = 'clang-format'


def main():
  parser = argparse.ArgumentParser(description=
                                   'Reformat changed lines in diff. Without -i '
                                   'option just output the diff that would be '
                                   'introduced.')
  parser.add_argument('-i', action='store_true', default=False,
                      help='apply edits to files instead of displaying a diff')
  parser.add_argument('-p', metavar='NUM', default=0,
                      help='strip the smallest prefix containing P slashes')
  parser.add_argument('-regex', metavar='PATTERN', default=None,
                      help='custom pattern selecting file paths to reformat '
                      '(case sensitive, overrides -iregex)')
  parser.add_argument('-iregex', metavar='PATTERN', default=
                      r'.*\.(cpp|cc|c\+\+|cxx|c|cl|h|hpp|m|mm|inc|js|ts|proto'
                      r'|protodevel|java)',
                      help='custom pattern selecting file paths to reformat '
                      '(case insensitive, overridden by -regex)')
  parser.add_argument('-sort-includes', action='store_true', default=False,
                      help='let clang-format sort include blocks')
  parser.add_argument('-v', '--verbose', action='store_true',
                      help='be more verbose, ineffective without -i')
  args = parser.parse_args()

  # Extract changed lines for each file.
  filename = None
  lines_by_file = {}
  for line in sys.stdin:
    match = re.search('^\+\+\+\ (.*?/){%s}(\S*)' % args.p, line)
    if match:
      filename = match.group(2)
    if filename == None:
      continue

    if args.regex is not None:
      if not re.match('^%s$' % args.regex, filename):
        continue
    else:
      if not re.match('^%s$' % args.iregex, filename, re.IGNORECASE):
        continue

    match = re.search('^@@.*\+(\d+)(,(\d+))?', line)
    if match:
      start_line = int(match.group(1))
      line_count = 1
      if match.group(3):
        line_count = int(match.group(3))
      if line_count == 0:
        continue
      end_line = start_line + line_count - 1
      lines_by_file.setdefault(filename, []).extend(
          ['-lines', str(start_line) + ':' + str(end_line)])

  # Reformat files containing changes in place.
  for filename, lines in lines_by_file.iteritems():
    if args.i and args.verbose:
      print 'Formatting', filename
    command = [binary, filename]
    if args.i:
      command.append('-i')
    if args.sort_includes:
      command.append('-sort-includes')
    command.extend(lines)
    command.extend(['-style=file', '-fallback-style=none'])
    p = subprocess.Popen(command, stdout=subprocess.PIPE,
                         stderr=None, stdin=subprocess.PIPE)
    stdout, stderr = p.communicate()
    if p.returncode != 0:
      sys.exit(p.returncode)

    if not args.i:
      with open(filename) as f:
        code = f.readlines()
      formatted_code = StringIO.StringIO(stdout).readlines()
      diff = difflib.unified_diff(code, formatted_code,
                                  filename, filename,
                                  '(before formatting)', '(after formatting)')
      diff_string = string.join(diff, '')
      if len(diff_string) > 0:
        sys.stdout.write(diff_string)

if __name__ == '__main__':
  main()

#!/bin/sh
# Copyright (c) 2017 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.

# This simple script checks for commits beginning with: scripted-diff:
# If found, looks for a script between the lines -BEGIN VERIFY SCRIPT- and
# -END VERIFY SCRIPT-. If no ending is found, it reads until the end of the
# commit message.

# The resulting script should exactly transform the previous commit into the current
# one. Any remaining diff signals an error.

if test "x$1" = "x"; then
    echo "Usage: $0 <commit>..."
    exit 1
fi

RET=0
PREV_BRANCH=`git name-rev --name-only HEAD`
PREV_HEAD=`git rev-parse HEAD`
for i in `git rev-list --reverse $1`; do
    if git rev-list -n 1 --pretty="%s" $i | grep -q "^scripted-diff:"; then
        git checkout --quiet $i^ || exit
        SCRIPT="`git rev-list --format=%b -n1 $i | sed '/^-BEGIN VERIFY SCRIPT-$/,/^-END VERIFY SCRIPT-$/{//!b};d'`"
        if test "x$SCRIPT" = "x"; then
            echo "Error: missing script for: $i"
            echo "Failed"
            RET=1
        else
            echo "Running script for: $i"
            echo "$SCRIPT"
            eval "$SCRIPT"
            git --no-pager diff --exit-code $i && echo "OK" || (echo "Failed"; false) || RET=1
        fi
        git reset --quiet --hard HEAD
     else
        if git rev-list "--format=%b" -n1 $i | grep -q '^-\(BEGIN\|END\)[ a-zA-Z]*-$'; then
            echo "Error: script block marker but no scripted-diff in title"
            echo "Failed"
            RET=1
        fi
    fi
done
git checkout --quiet $PREV_BRANCH 2>/dev/null || git checkout --quiet $PREV_HEAD
exit $RET

#!/usr/bin/env python3
# Copyright (c) 2016 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.

import re
import fnmatch
import sys
import subprocess
import datetime
import os

################################################################################
# file filtering
################################################################################

EXCLUDE = [
    # libsecp256k1:
    'src/secp256k1/include/secp256k1.h',
    'src/secp256k1/include/secp256k1_ecdh.h',
    'src/secp256k1/include/secp256k1_recovery.h',
    'src/secp256k1/include/secp256k1_schnorr.h',
    'src/secp256k1/src/java/org_bitcoin_NativeSecp256k1.c',
    'src/secp256k1/src/java/org_bitcoin_NativeSecp256k1.h',
    'src/secp256k1/src/java/org_bitcoin_Secp256k1Context.c',
    'src/secp256k1/src/java/org_bitcoin_Secp256k1Context.h',
    # auto generated:
    'src/univalue/lib/univalue_escapes.h',
    'src/qt/bitcoinstrings.cpp',
    'src/chainparamsseeds.h',
    # other external copyrights:
    'src/tinyformat.h',
    'src/leveldb/util/env_win.cc',
    'src/crypto/ctaes/bench.c',
    'test/functional/test_framework/bignum.py',
    # python init:
    '*__init__.py',
]
EXCLUDE_COMPILED = re.compile('|'.join([fnmatch.translate(m) for m in EXCLUDE]))

INCLUDE = ['*.h', '*.cpp', '*.cc', '*.c', '*.py']
INCLUDE_COMPILED = re.compile('|'.join([fnmatch.translate(m) for m in INCLUDE]))

def applies_to_file(filename):
    return ((EXCLUDE_COMPILED.match(filename) is None) and
            (INCLUDE_COMPILED.match(filename) is not None))

################################################################################
# obtain list of files in repo according to INCLUDE and EXCLUDE
################################################################################

GIT_LS_CMD = 'git ls-files'

def call_git_ls():
    out = subprocess.check_output(GIT_LS_CMD.split(' '))
    return [f for f in out.decode("utf-8").split('\n') if f != '']

def get_filenames_to_examine():
    filenames = call_git_ls()
    return sorted([filename for filename in filenames if
                   applies_to_file(filename)])

################################################################################
# define and compile regexes for the patterns we are looking for
################################################################################


COPYRIGHT_WITH_C = 'Copyright \(c\)'
COPYRIGHT_WITHOUT_C = 'Copyright'
ANY_COPYRIGHT_STYLE = '(%s|%s)' % (COPYRIGHT_WITH_C, COPYRIGHT_WITHOUT_C)

YEAR = "20[0-9][0-9]"
YEAR_RANGE = '(%s)(-%s)?' % (YEAR, YEAR)
YEAR_LIST = '(%s)(, %s)+' % (YEAR, YEAR)
ANY_YEAR_STYLE = '(%s|%s)' % (YEAR_RANGE, YEAR_LIST)
ANY_COPYRIGHT_STYLE_OR_YEAR_STYLE = ("%s %s" % (ANY_COPYRIGHT_STYLE,
                                                ANY_YEAR_STYLE))

ANY_COPYRIGHT_COMPILED = re.compile(ANY_COPYRIGHT_STYLE_OR_YEAR_STYLE)

def compile_copyright_regex(copyright_style, year_style, name):
    return re.compile('%s %s %s' % (copyright_style, year_style, name))

EXPECTED_HOLDER_NAMES = [
    "Satoshi Nakamoto\n",
    "The Bitcoin Core developers\n",
    "The Bitcoin Core developers \n",
    "Bitcoin Core Developers\n",
    "the Bitcoin Core developers\n",
    "The Bitcoin developers\n",
    "The LevelDB Authors\. All rights reserved\.\n",
    "BitPay Inc\.\n",
    "BitPay, Inc\.\n",
    "University of Illinois at Urbana-Champaign\.\n",
    "MarcoFalke\n",
    "Pieter Wuille\n",
    "Pieter Wuille +\*\n",
    "Pieter Wuille, Gregory Maxwell +\*\n",
    "Pieter Wuille, Andrew Poelstra +\*\n",
    "Andrew Poelstra +\*\n",
    "Wladimir J. van der Laan\n",
    "Jeff Garzik\n",
    "Diederik Huys, Pieter Wuille +\*\n",
    "Thomas Daede, Cory Fields +\*\n",
    "Jan-Klaas Kollhof\n",
    "Sam Rushing\n",
    "ArtForz -- public domain half-a-node\n",
]

DOMINANT_STYLE_COMPILED = {}
YEAR_LIST_STYLE_COMPILED = {}
WITHOUT_C_STYLE_COMPILED = {}

for holder_name in EXPECTED_HOLDER_NAMES:
    DOMINANT_STYLE_COMPILED[holder_name] = (
        compile_copyright_regex(COPYRIGHT_WITH_C, YEAR_RANGE, holder_name))
    YEAR_LIST_STYLE_COMPILED[holder_name] = (
        compile_copyright_regex(COPYRIGHT_WITH_C, YEAR_LIST, holder_name))
    WITHOUT_C_STYLE_COMPILED[holder_name] = (
        compile_copyright_regex(COPYRIGHT_WITHOUT_C, ANY_YEAR_STYLE,
                                holder_name))

################################################################################
# search file contents for copyright message of particular category
################################################################################

def get_count_of_copyrights_of_any_style_any_holder(contents):
    return len(ANY_COPYRIGHT_COMPILED.findall(contents))

def file_has_dominant_style_copyright_for_holder(contents, holder_name):
    match = DOMINANT_STYLE_COMPILED[holder_name].search(contents)
    return match is not None

def file_has_year_list_style_copyright_for_holder(contents, holder_name):
    match = YEAR_LIST_STYLE_COMPILED[holder_name].search(contents)
    return match is not None

def file_has_without_c_style_copyright_for_holder(contents, holder_name):
    match = WITHOUT_C_STYLE_COMPILED[holder_name].search(contents)
    return match is not None

################################################################################
# get file info
################################################################################

def read_file(filename):
    return open(os.path.abspath(filename), 'r').read()

def gather_file_info(filename):
    info = {}
    info['filename'] = filename
    c = read_file(filename)
    info['contents'] = c

    info['all_copyrights'] = get_count_of_copyrights_of_any_style_any_holder(c)

    info['classified_copyrights'] = 0
    info['dominant_style'] = {}
    info['year_list_style'] = {}
    info['without_c_style'] = {}
    for holder_name in EXPECTED_HOLDER_NAMES:
        has_dominant_style = (
            file_has_dominant_style_copyright_for_holder(c, holder_name))
        has_year_list_style = (
            file_has_year_list_style_copyright_for_holder(c, holder_name))
        has_without_c_style = (
            file_has_without_c_style_copyright_for_holder(c, holder_name))
        info['dominant_style'][holder_name] = has_dominant_style
        info['year_list_style'][holder_name] = has_year_list_style
        info['without_c_style'][holder_name] = has_without_c_style
        if has_dominant_style or has_year_list_style or has_without_c_style:
            info['classified_copyrights'] = info['classified_copyrights'] + 1
    return info

################################################################################
# report execution
################################################################################

SEPARATOR = '-'.join(['' for _ in range(80)])

def print_filenames(filenames, verbose):
    if not verbose:
        return
    for filename in filenames:
        print("\t%s" % filename)

def print_report(file_infos, verbose):
    print(SEPARATOR)
    examined = [i['filename'] for i in file_infos]
    print("%d files examined according to INCLUDE and EXCLUDE fnmatch rules" %
          len(examined))
    print_filenames(examined, verbose)

    print(SEPARATOR)
    print('')
    zero_copyrights = [i['filename'] for i in file_infos if
                       i['all_copyrights'] == 0]
    print("%4d with zero copyrights" % len(zero_copyrights))
    print_filenames(zero_copyrights, verbose)
    one_copyright = [i['filename'] for i in file_infos if
                     i['all_copyrights'] == 1]
    print("%4d with one copyright" % len(one_copyright))
    print_filenames(one_copyright, verbose)
    two_copyrights = [i['filename'] for i in file_infos if
                      i['all_copyrights'] == 2]
    print("%4d with two copyrights" % len(two_copyrights))
    print_filenames(two_copyrights, verbose)
    three_copyrights = [i['filename'] for i in file_infos if
                        i['all_copyrights'] == 3]
    print("%4d with three copyrights" % len(three_copyrights))
    print_filenames(three_copyrights, verbose)
    four_or_more_copyrights = [i['filename'] for i in file_infos if
                               i['all_copyrights'] >= 4]
    print("%4d with four or more copyrights" % len(four_or_more_copyrights))
    print_filenames(four_or_more_copyrights, verbose)
    print('')
    print(SEPARATOR)
    print('Copyrights with dominant style:\ne.g. "Copyright (c)" and '
          '"<year>" or "<startYear>-<endYear>":\n')
    for holder_name in EXPECTED_HOLDER_NAMES:
        dominant_style = [i['filename'] for i in file_infos if
                          i['dominant_style'][holder_name]]
        if len(dominant_style) > 0:
            print("%4d with '%s'" % (len(dominant_style),
                                     holder_name.replace('\n', '\\n')))
            print_filenames(dominant_style, verbose)
    print('')
    print(SEPARATOR)
    print('Copyrights with year list style:\ne.g. "Copyright (c)" and '
          '"<year1>, <year2>, ...":\n')
    for holder_name in EXPECTED_HOLDER_NAMES:
        year_list_style = [i['filename'] for i in file_infos if
                           i['year_list_style'][holder_name]]
        if len(year_list_style) > 0:
            print("%4d with '%s'" % (len(year_list_style),
                                     holder_name.replace('\n', '\\n')))
            print_filenames(year_list_style, verbose)
    print('')
    print(SEPARATOR)
    print('Copyrights with no "(c)" style:\ne.g. "Copyright" and "<year>" or '
          '"<startYear>-<endYear>":\n')
    for holder_name in EXPECTED_HOLDER_NAMES:
        without_c_style = [i['filename'] for i in file_infos if
                           i['without_c_style'][holder_name]]
        if len(without_c_style) > 0:
            print("%4d with '%s'" % (len(without_c_style),
                                     holder_name.replace('\n', '\\n')))
            print_filenames(without_c_style, verbose)

    print('')
    print(SEPARATOR)

    unclassified_copyrights = [i['filename'] for i in file_infos if
                               i['classified_copyrights'] < i['all_copyrights']]
    print("%d with unexpected copyright holder names" %
          len(unclassified_copyrights))
    print_filenames(unclassified_copyrights, verbose)
    print(SEPARATOR)

def exec_report(base_directory, verbose):
    original_cwd = os.getcwd()
    os.chdir(base_directory)
    filenames = get_filenames_to_examine()
    file_infos = [gather_file_info(f) for f in filenames]
    print_report(file_infos, verbose)
    os.chdir(original_cwd)

################################################################################
# report cmd
################################################################################

REPORT_USAGE = """
Produces a report of all copyright header notices found inside the source files
of a repository.

Usage:
    $ ./copyright_header.py report <base_directory> [verbose]

Arguments:
    <base_directory> - The base directory of a bitcoin source code repository.
    [verbose] - Includes a list of every file of each subcategory in the report.
"""

def report_cmd(argv):
    if len(argv) == 2:
        sys.exit(REPORT_USAGE)
        
    base_directory = argv[2]
    if not os.path.exists(base_directory):
        sys.exit("*** bad <base_directory>: %s" % base_directory)

    if len(argv) == 3:
        verbose = False
    elif argv[3] == 'verbose':
        verbose = True
    else:
        sys.exit("*** unknown argument: %s" % argv[2])

    exec_report(base_directory, verbose)

################################################################################
# query git for year of last change
################################################################################

GIT_LOG_CMD = "git log --pretty=format:%%ai %s"

def call_git_log(filename):
    out = subprocess.check_output((GIT_LOG_CMD % filename).split(' '))
    return out.decode("utf-8").split('\n')

def get_git_change_years(filename):
    git_log_lines = call_git_log(filename)
    if len(git_log_lines) == 0:
        return [datetime.date.today().year]
    # timestamp is in ISO 8601 format. e.g. "2016-09-05 14:25:32 -0600"
    return [line.split(' ')[0].split('-')[0] for line in git_log_lines]

def get_most_recent_git_change_year(filename):
    return max(get_git_change_years(filename))

################################################################################
# read and write to file
################################################################################

def read_file_lines(filename):
    f = open(os.path.abspath(filename), 'r')
    file_lines = f.readlines()
    f.close()
    return file_lines

def write_file_lines(filename, file_lines):
    f = open(os.path.abspath(filename), 'w')
    f.write(''.join(file_lines))
    f.close()

################################################################################
# update header years execution
################################################################################

COPYRIGHT = 'Copyright \(c\)'
YEAR = "20[0-9][0-9]"
YEAR_RANGE = '(%s)(-%s)?' % (YEAR, YEAR)
HOLDER = 'The Bitcoin Core developers'
UPDATEABLE_LINE_COMPILED = re.compile(' '.join([COPYRIGHT, YEAR_RANGE, HOLDER]))

def get_updatable_copyright_line(file_lines):
    index = 0
    for line in file_lines:
        if UPDATEABLE_LINE_COMPILED.search(line) is not None:
            return index, line
        index = index + 1
    return None, None

def parse_year_range(year_range):
    year_split = year_range.split('-')
    start_year = year_split[0]
    if len(year_split) == 1:
        return start_year, start_year
    return start_year, year_split[1]

def year_range_to_str(start_year, end_year):
    if start_year == end_year:
        return start_year
    return "%s-%s" % (start_year, end_year)

def create_updated_copyright_line(line, last_git_change_year):
    copyright_splitter = 'Copyright (c) '
    copyright_split = line.split(copyright_splitter)
    # Preserve characters on line that are ahead of the start of the copyright
    # notice - they are part of the comment block and vary from file-to-file.
    before_copyright = copyright_split[0]
    after_copyright = copyright_split[1]

    space_split = after_copyright.split(' ')
    year_range = space_split[0]
    start_year, end_year = parse_year_range(year_range)
    if end_year == last_git_change_year:
        return line
    return (before_copyright + copyright_splitter +
            year_range_to_str(start_year, last_git_change_year) + ' ' +
            ' '.join(space_split[1:]))

def update_updatable_copyright(filename):
    file_lines = read_file_lines(filename)
    index, line = get_updatable_copyright_line(file_lines)
    if not line:
        print_file_action_message(filename, "No updatable copyright.")
        return
    last_git_change_year = get_most_recent_git_change_year(filename)
    new_line = create_updated_copyright_line(line, last_git_change_year)
    if line == new_line:
        print_file_action_message(filename, "Copyright up-to-date.")
        return
    file_lines[index] = new_line
    write_file_lines(filename, file_lines)
    print_file_action_message(filename,
                              "Copyright updated! -> %s" % last_git_change_year)

def exec_update_header_year(base_directory):
    original_cwd = os.getcwd()
    os.chdir(base_directory)
    for filename in get_filenames_to_examine():
        update_updatable_copyright(filename)
    os.chdir(original_cwd)

################################################################################
# update cmd
################################################################################

UPDATE_USAGE = """
Updates all the copyright headers of "The Bitcoin Core developers" which were
changed in a year more recent than is listed. For example:

// Copyright (c) <firstYear>-<lastYear> The Bitcoin Core developers

will be updated to:

// Copyright (c) <firstYear>-<lastModifiedYear> The Bitcoin Core developers

where <lastModifiedYear> is obtained from the 'git log' history.

This subcommand also handles copyright headers that have only a single year. In those cases:

// Copyright (c) <year> The Bitcoin Core developers

will be updated to:

// Copyright (c) <year>-<lastModifiedYear> The Bitcoin Core developers

where the update is appropriate.

Usage:
    $ ./copyright_header.py update <base_directory>

Arguments:
    <base_directory> - The base directory of a bitcoin source code repository.
"""

def print_file_action_message(filename, action):
    print("%-52s %s" % (filename, action))

def update_cmd(argv):
    if len(argv) != 3:
        sys.exit(UPDATE_USAGE)
    
    base_directory = argv[2]
    if not os.path.exists(base_directory):
        sys.exit("*** bad base_directory: %s" % base_directory)
    exec_update_header_year(base_directory)

################################################################################
# inserted copyright header format
################################################################################

def get_header_lines(header, start_year, end_year):
    lines = header.split('\n')[1:-1]
    lines[0] = lines[0] % year_range_to_str(start_year, end_year)
    return [line + '\n' for line in lines]

CPP_HEADER = '''
// Copyright (c) %s The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
'''

def get_cpp_header_lines_to_insert(start_year, end_year):
    return reversed(get_header_lines(CPP_HEADER, start_year, end_year))

PYTHON_HEADER = '''
# Copyright (c) %s The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
'''

def get_python_header_lines_to_insert(start_year, end_year):
    return reversed(get_header_lines(PYTHON_HEADER, start_year, end_year))

################################################################################
# query git for year of last change
################################################################################

def get_git_change_year_range(filename):
    years = get_git_change_years(filename)
    return min(years), max(years)

################################################################################
# check for existing core copyright
################################################################################

def file_already_has_core_copyright(file_lines):
    index, _ = get_updatable_copyright_line(file_lines)
    return index != None

################################################################################
# insert header execution
################################################################################

def file_has_hashbang(file_lines):
    if len(file_lines) < 1:
        return False
    if len(file_lines[0]) <= 2:
        return False
    return file_lines[0][:2] == '#!'

def insert_python_header(filename, file_lines, start_year, end_year):
    if file_has_hashbang(file_lines):
        insert_idx = 1 
    else:
        insert_idx = 0
    header_lines = get_python_header_lines_to_insert(start_year, end_year)
    for line in header_lines:
        file_lines.insert(insert_idx, line)
    write_file_lines(filename, file_lines)

def insert_cpp_header(filename, file_lines, start_year, end_year):
    header_lines = get_cpp_header_lines_to_insert(start_year, end_year)
    for line in header_lines:
        file_lines.insert(0, line)
    write_file_lines(filename, file_lines)

def exec_insert_header(filename, style):
    file_lines = read_file_lines(filename)
    if file_already_has_core_copyright(file_lines):
        sys.exit('*** %s already has a copyright by The Bitcoin Core developers'
                 % (filename))
    start_year, end_year = get_git_change_year_range(filename)
    if style == 'python':
        insert_python_header(filename, file_lines, start_year, end_year)
    else:
        insert_cpp_header(filename, file_lines, start_year, end_year)

################################################################################
# insert cmd
################################################################################

INSERT_USAGE = """
Inserts a copyright header for "The Bitcoin Core developers" at the top of the
file in either Python or C++ style as determined by the file extension. If the
file is a Python file and it has a '#!' starting the first line, the header is
inserted in the line below it.

The copyright dates will be set to be:

"<year_introduced>-<current_year>"

where <year_introduced> is according to the 'git log' history. If
<year_introduced> is equal to <current_year>, the date will be set to be:

"<current_year>"

If the file already has a copyright for "The Bitcoin Core developers", the
script will exit.

Usage:
    $ ./copyright_header.py insert <file>

Arguments:
    <file> - A source file in the bitcoin repository.
"""

def insert_cmd(argv):
    if len(argv) != 3:
        sys.exit(INSERT_USAGE)

    filename = argv[2]
    if not os.path.isfile(filename):
        sys.exit("*** bad filename: %s" % filename)
    _, extension = os.path.splitext(filename)
    if extension not in ['.h', '.cpp', '.cc', '.c', '.py']:
        sys.exit("*** cannot insert for file extension %s" % extension)
   
    if extension == '.py': 
        style = 'python'
    else:
        style = 'cpp'
    exec_insert_header(filename, style)
         
################################################################################
# UI
################################################################################

USAGE = """
copyright_header.py - utilities for managing copyright headers of 'The Bitcoin
Core developers' in repository source files.

Usage:
    $ ./copyright_header <subcommand>

Subcommands:
    report
    update
    insert

To see subcommand usage, run them without arguments.
"""

SUBCOMMANDS = ['report', 'update', 'insert']

if __name__ == "__main__":
    if len(sys.argv) == 1:
        sys.exit(USAGE)
    subcommand = sys.argv[1]
    if subcommand not in SUBCOMMANDS:
        sys.exit(USAGE)
    if subcommand == 'report':
        report_cmd(sys.argv)
    elif subcommand == 'update':
        update_cmd(sys.argv)
    elif subcommand == 'insert':
        insert_cmd(sys.argv)

#!/bin/sh

TOPDIR=${TOPDIR:-$(git rev-parse --show-toplevel)}
SRCDIR=${SRCDIR:-$TOPDIR/src}
MANDIR=${MANDIR:-$TOPDIR/doc/man}

BITCOIND=${BITCOIND:-$SRCDIR/yentend}
BITCOINCLI=${BITCOINCLI:-$SRCDIR/yenten-cli}
BITCOINTX=${BITCOINTX:-$SRCDIR/yenten-tx}
BITCOINQT=${BITCOINQT:-$SRCDIR/qt/yenten-qt}

[ ! -x $BITCOIND ] && echo "$BITCOIND not found or not executable." && exit 1

# The autodetected version git tag can screw up manpage output a little bit
BTCVER=($($BITCOINCLI --version | head -n1 | awk -F'[ -]' '{ print $6, $7 }'))

# Create a footer file with copyright content.
# This gets autodetected fine for yentend if --version-string is not set,
# but has different outcomes for yenten-qt and yenten-cli.
echo "[COPYRIGHT]" > footer.h2m
$BITCOIND --version | sed -n '1!p' >> footer.h2m

for cmd in $BITCOIND $BITCOINCLI $BITCOINTX $BITCOINQT; do
  cmdname="${cmd##*/}"
  help2man -N --version-string=${BTCVER[0]} --include=footer.h2m -o ${MANDIR}/${cmdname}.1 ${cmd}
  sed -i "s/\\\-${BTCVER[1]}//g" ${MANDIR}/${cmdname}.1
done

rm -f footer.h2m

#!/bin/sh
# Copyright (c) 2015 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.

DIR="$1"
COMMIT="$2"
if [ -z "$COMMIT" ]; then
    COMMIT=HEAD
fi

# Taken from git-subtree (Copyright (C) 2009 Avery Pennarun <apenwarr@gmail.com>)
find_latest_squash()
{
	dir="$1"
	sq=
	main=
	sub=
	git log --grep="^git-subtree-dir: $dir/*\$" \
		--pretty=format:'START %H%n%s%n%n%b%nEND%n' "$COMMIT" |
	while read a b junk; do
		case "$a" in
			START) sq="$b" ;;
			git-subtree-mainline:) main="$b" ;;
			git-subtree-split:) sub="$b" ;;
			END)
				if [ -n "$sub" ]; then
					if [ -n "$main" ]; then
						# a rejoin commit?
						# Pretend its sub was a squash.
						sq="$sub"
					fi
					echo "$sq" "$sub"
					break
				fi
				sq=
				main=
				sub=
				;;
		esac
	done
}

latest_squash="$(find_latest_squash "$DIR")"
if [ -z "$latest_squash" ]; then
    echo "ERROR: $DIR is not a subtree" >&2
    exit 2
fi

set $latest_squash
old=$1
rev=$2
if [ "d$(git cat-file -t $rev 2>/dev/null)" != dcommit ]; then
    echo "ERROR: subtree commit $rev unavailable. Fetch/update the subtree repository" >&2
    exit 2
fi
tree_subtree=$(git show -s --format="%T" $rev)
echo "$DIR in $COMMIT was last updated to upstream commit $rev (tree $tree_subtree)"
tree_actual=$(git ls-tree -d "$COMMIT" "$DIR" | head -n 1)
if [ -z "$tree_actual" ]; then
    echo "FAIL: subtree directory $DIR not found in $COMMIT" >&2
    exit 1
fi
set $tree_actual
tree_actual_type=$2
tree_actual_tree=$3
echo "$DIR in $COMMIT currently refers to $tree_actual_type $tree_actual_tree"
if [ "d$tree_actual_type" != "dtree" ]; then
    echo "FAIL: subtree directory $DIR is not a tree in $COMMIT" >&2
    exit 1
fi
if [ "$tree_actual_tree" != "$tree_subtree" ]; then
    git diff-tree $tree_actual_tree $tree_subtree >&2
    echo "FAIL: subtree directory tree doesn't match subtree commit tree" >&2
    exit 1
fi
echo "GOOD"