dnl -*- autoconf -*-
dnl FILE: "/home/joze/src/tclreadline/configure.in"
dnl LAST MODIFICATION: "Thu Dec 16 22:01:33 1999 (joze)"
dnl (C) 1998, 1999 by Johannes Zellner, <johannes@zellner.org>
dnl $Id$
dnl ---

dnl
dnl tclreadline -- gnu readline for tcl
dnl Copyright (C) 1999  Johannes Zellner

dnl
dnl This program is free software; you can redistribute it and/or
dnl modify it under the terms of the GNU General Public License
dnl as published by the Free Software Foundation; either version 2
dnl of the License, or (at your option) any later version.

dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl GNU General Public License for more details.

dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

dnl
dnl johannes@zellner.org
dnl http://www.zellner.org/tclreadline/

dnl
dnl ================================================================== */  

dnl	This file is an input file used by the GNU "autoconf" program to
dnl	generate the file "configure", which is run during Tk installation
dnl	to configure the system for the local environment.



AC_INIT(tclreadline.c)
AC_CONFIG_HEADER(config.h)
AC_PREREQ(2.13)
AC_REVISION($Revision$)
AC_CONFIG_AUX_DIR(./aux)

TCLREADLINE_MAJOR_VERSION=1
TCLREADLINE_MINOR_VERSION=0
TCLREADLINE_PATCHLEVEL=5
TCLREADLINE_VERSION=$TCLREADLINE_MAJOR_VERSION.$TCLREADLINE_MINOR_VERSION
TCLREADLINE_PATCHLEVEL_STR=${TCLREADLINE_VERSION}.${TCLREADLINE_PATCHLEVEL}
VERSION=$TCLREADLINE_VERSION

dnl AM_INIT_AUTOMAKE(tclreadline, $VERSION)



AC_CANONICAL_HOST


TCLREADLINE_LPATH=`echo $LD_LIBRARY_PATH $LD_RUN_PATH $LPATH | sed 's/:/ /g'`
TCLREADLINE_LPATH="$TCLREADLINE_LPATH /usr/local/lib /lib /usr/lib /usr/shlib"

    AC_MSG_ERROR(Can't find Tcl libraries.  Use --with-tcl to specify the directory containing tclConfig.sh on your system.)
else
    . $TCL_LIB_DIR/tclConfig.sh
    AC_MSG_RESULT($TCL_LIB_DIR/tclConfig.sh)
    AC_MSG_CHECKING([for your tcl version])
    AC_MSG_RESULT([$TCL_VERSION, patchlevel $TCL_PATCH_LEVEL])
fi

#--------------------------------------------------------------------
#    eventually check for tkConfig.sh
#--------------------------------------------------------------------

tk_search="no"
AC_ARG_WITH(
    tk,
    [  --with-tk=DIR           where to look for tclConfig.sh],
    tk_search=$withval,
    tk_search="yes"
)

if test "$tk_search" != "no"; then
    AC_MSG_CHECKING([which tkConfig.sh to use])
    TK_LIB_DIR=""
    for dir in $tk_search /usr/lib /usr/local/lib $exec_prefix/lib /usr/local/lib/unix /opt/tcl/lib; do
	if test -r $dir/tkConfig.sh; then
	    TK_LIB_DIR=$dir
	    break
	fi
    done

    if test -z "$TK_LIB_DIR"; then
	AC_MSG_ERROR(Can't find Tk libraries.)
    else
	. $TK_LIB_DIR/tkConfig.sh
	AC_MSG_RESULT($TK_LIB_DIR/tkConfig.sh)
	AC_MSG_CHECKING([for your tk version])
	AC_MSG_RESULT([$TK_VERSION, patchlevel $TK_PATCH_LEVEL])
    fi
    AC_SUBST(TK_LIB_SPEC)
fi

#--------------------------------------------------------------------
#   Read in configuration information generated by Tcl for shared
#   libraries, and arrange for it to be substituted into our
#   Makefile.
#--------------------------------------------------------------------

#--------------------------------------------------------------------
#   The statements below define a collection of symbols related to
#   building libtclreadline as a shared library instead of a static library.
#   (static is not implemented yet anyway).
#--------------------------------------------------------------------

AC_ARG_ENABLE(shared,
    [  --disable-shared        don't build libtclreadline as a shared library.],

    [ok=$enableval], [ok=yes])
if test "$ok" = "yes"; then
    if test ${TCL_SHARED_BUILD} = 0; then
        AC_MSG_ERROR(Tcl was not built with --enable-shared, so you can't use shared libraries.)
    fi
    SHLIB_CFLAGS="${SHLIB_CFLAGS}"
    eval "TCLREADLINE_LIB_FILE=libtclreadline${VERSION}${SHLIB_SUFFIX}"
    TCLREADLINE_PKG_FILE="[[file join [file dirname \$dir] ${TCLREADLINE_LIB_FILE}]]"
    MAKE_LIB="\$(SHLIB_LD) -o ${TCLREADLINE_LIB_FILE} \$(OBJS) ${SHLIB_LD_LIBS}"
    RANLIB=":"
else

    SHLIB_CFLAGS=""
    eval "TCLREADLINE_LIB_FILE=libtclreadline${VERSION}.a"
    TCLREADLINE_PKG_FILE="[[file join [file dirname \$dir] ${TCLREADLINE_LIB_FILE}]]"
    MAKE_LIB="ar cr ${TCLREADLINE_LIB_FILE} \${OBJS}"
fi

# Note:  in the following variable, it's important to use the absolute
# path name of the Tcl directory rather than "..":  this is because
# AIX remembers this path and will attempt to use it at run-time to look
# up the Tcl library.

  Can't find readline.h.
  Use --with-readline-includes to specify the directory
  containing readline.h on your system.])
else
    AC_MSG_RESULT($READLINE_INCLUDE_DIR/readline.h)
	base="`(basename ${READLINE_INCLUDE_DIR}) 2>/dev/null`"
	if test "x${base}" != "xreadline"; then
		AC_DEFINE_UNQUOTED(READLINE_LIBRARY, 1, [ Define if we have libreadline. ])
	fi
fi



#--------------------------------------------------------------------
#   Check for libreadline

# _rl_executing_macro.

AC_MSG_CHECKING([for _rl_executing_macro in -lreadline])
AC_TRY_LINK(,[
	extern char* _rl_executing_macro;
	_rl_executing_macro = (char*) 0;
],
    AC_MSG_RESULT(yes); AC_DEFINE_UNQUOTED(EXECUTING_MACRO_HACK, 1, [define, if _rl_executing_macro is resolved in libreadline]),
    AC_MSG_RESULT(no))

# check for readline's rl_cleanup_after_signal

AC_MSG_CHECKING([for rl_cleanup_after_signal() in -lreadline])
AC_TRY_LINK(,[
    extern void rl_cleanup_after_signal();
	rl_cleanup_after_signal();
],
    AC_MSG_RESULT(yes); AC_DEFINE_UNQUOTED(CLEANUP_AFER_SIGNAL, 1, [define, if rl_cleanup_after_signal is resolved in libreadline]),
    AC_MSG_RESULT(no))


AC_MSG_CHECKING([for the readline version number])
AC_TRY_RUN([
#include <stdio.h>
int main () {

AC_SUBST(TCLREADLINE_VERSION)
AC_SUBST(TCLREADLINE_PATCHLEVEL)
AC_SUBST(TCLREADLINE_LIBRARY)
AC_SUBST(TCLREADLINE_PATCHLEVEL_STR)


AC_SUBST(TCL_LIB_DIR)
AC_SUBST(TCL_LIB_SPEC)
AC_SUBST(TCL_INCLUDE_DIR)
AC_SUBST(READLINE_INCLUDE_DIR)

AC_SUBST(CFLAGS)
AC_SUBST(DL_LIBS)
AC_SUBST(LD_FLAGS)
AC_SUBST(RANLIB)