dnl Define ourselves
AC_INIT(tcl-nano, 0)
dnl Checks for programs.
AC_PROG_CC
AC_PROG_MAKE_SET
AC_PROG_INSTALL
AC_GNU_SOURCE
dnl Determine system information
DC_CHK_OS_INFO
dnl Look for appropriate headers
AC_CHECK_HEADERS(stdint.h limits.h unistd.h stdlib.h string.h sys/stat.h sys/types.h fcntl.h sys/random.h)
dnl Perform Tcl Extension required stuff
TCLEXT_INIT
if test "$TCLEXT_BUILD" != 'static'; then
dnl Determine how to make shared objects
DC_GET_SHOBJFLAGS
EXTENSION_TARGET="nano.${SHOBJEXT}"
else
AC_CHECK_TOOL([AR], [ar], [false])
AC_CHECK_TOOL([RANLIB], [ranlib], [:])
EXTENSION_TARGET="nano.${AREXT}"
fi
AC_SUBST(EXTENSION_TARGET)
AC_SUBST(TCLEXT_BUILD)
dnl Enable support for a debugging build
tcl_nano_debug='false'
AC_ARG_ENABLE([debug], AS_HELP_STRING([--enable-debug], [enable debugging parameters]), [
if test "$enableval" = "yes"; then
tcl_nano_debug='true'
fi
])
if test "$tcl_nano_debug" = 'true'; then
AC_DEFINE(TCLEXT_TCL_NANO_DEBUG, [1], [Enable debugging build])
AX_CHECK_COMPILE_FLAG([-fcheck-pointer-bounds], [CFLAGS="$CFLAGS -fcheck-pointer-bounds"])
AX_CHECK_COMPILE_FLAG([-g3], [CFLAGS="$CFLAGS -g3"])
AX_CHECK_COMPILE_FLAG([-ggdb3], [CFLAGS="$CFLAGS -ggdb3"])
else
dnl If we are not doing debugging disable some of the more annoying warnings
AX_CHECK_COMPILE_FLAG([-Wno-unused-value], [CFLAGS="$CFLAGS -Wno-unused-value"])
AX_CHECK_COMPILE_FLAG([-Wno-unused-parameter], [CFLAGS="$CFLAGS -Wno-unused-parameter"])
AX_CHECK_COMPILE_FLAG([-Wno-deprecated-declarations], [CFLAGS="$CFLAGS -Wno-deprecated-declarations"])
fi
AX_CHECK_COMPILE_FLAG([-Wno-sign-compare], [CFLAGS="$CFLAGS -Wno-sign-compare"])
dnl Enable compiler warnings
AX_CHECK_COMPILE_FLAG([-Wall], [CFLAGS="-Wall $CFLAGS"])
AX_CHECK_COMPILE_FLAG([-W], [
CFLAGS="-W $CFLAGS"
AX_CHECK_COMPILE_FLAG([-Wno-self-assign], [CFLAGS="$CFLAGS -Wno-self-assign"])
])
dnl Enable hardening
AX_CHECK_COMPILE_FLAG([-fstack-protector-all], [CFLAGS="$CFLAGS -fstack-protector-all"])
AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CFLAGS="$CFLAGS -fno-strict-overflow"])
AC_DEFINE([_FORTIFY_SOURCE], [2], [Enable fortification])
dnl Random number generation mechanisms
AC_CHECK_FUNC(getrandom,, [
AC_CHECK_FUNC(getentropy,, [
AC_CHECK_FUNC(CryptGenRandom)
])
])
dnl Sync the RPATH if requested
if test "$TCLEXT_BUILD" != 'static'; then
if test "$TCLEXT_TLS_STATIC_SSL" = 'yes'; then
DC_SYNC_RPATH([no])
else
DC_SYNC_RPATH([yes])
fi
fi
dnl Setup a stable ABI
DC_SETUP_STABLE_API([${srcdir}/nano.vers], nano.syms)
if test "$tcl_nano_debug" = 'true'; then
WEAKENSYMS=':'
REMOVESYMS=':'
fi
dnl Produce output
AC_OUTPUT(Makefile pkgIndex.tcl-${TCLEXT_BUILD} nano.syms)