guile.m4
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dnl This file is part of GNU mailutils.
dnl Copyright (C) 2001, 2006, 2007, 2010 Free Software Foundation, Inc.
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 3 of the License, or
dnl (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 Foundation,
dnl Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
dnl
dnl MU_CHECK_GUILE(minversion, [act-if-found], [ac-if-not-found])
dnl $1 $2 $3
AC_DEFUN([MU_CHECK_GUILE],
[
AS_VAR_SET([mu_cv_guile], [no])
AC_PATH_PROG(GUILE_CONFIG, guile-config, no, $PATH)
if test "$GUILE_CONFIG" = no; then
m4_if($3,,[AC_MSG_ERROR(cannot find Guile)], [$3])
else
AC_SUBST(GUILE_INCLUDES)
AC_SUBST(GUILE_LIBS)
AC_SUBST(GUILE_VERSION)
AC_SUBST(GUILE_VERSION_NUMBER)
GUILE_INCLUDES=`$GUILE_CONFIG compile`
GUILE_LIBS=`$GUILE_CONFIG link`
GUILE_VERSION=`($GUILE_CONFIG --version 2>&1; echo '')|sed 's/guile-config [[^0-9]]* \([[0-9]][[0-9.]]*\)$/\1/'`
VEX=`echo $GUILE_VERSION | sed 's/\./ \\\\* 1000 + /;s/\./ \\\\* 100 + /'`
GUILE_VERSION_NUMBER=`eval expr "$VEX"`
ifelse($1,,,[
VEX=`echo $1 | sed 's/\./ \\\\* 1000 + /;s/\./ \\\\* 100 + /'`
min=`eval expr "$VEX"`
if test $GUILE_VERSION_NUMBER -lt $min; then
m4_if($3,,
[AC_MSG_ERROR([Guile version too old; required is at least ]$1)],
[$3])
fi])
save_LIBS=$LIBS
save_CFLAGS=$CFLAGS
LIBS="$LIBS $GUILE_LIBS"
CFLAGS="$CFLAGS $GUILE_INCLUDES"
AC_TRY_LINK([#include <libguile.h>],
m4_if([$1], , scm_shell(0, NULL);, [$1]),
[AS_VAR_SET([mu_cv_guile], $GUILE_VERSION)])
LIBS=$save_LIBS
CFLAGS=$save_CFLAGS
fi
if test $mu_cv_guile = no; then
GUILE_INCLUDES=
GUILE_LIBS=
GUILE_VERSION=
GUILE_VERSION_NUMBER=
m4_if($3,,[AC_MSG_ERROR(required library libguile not found)], [$3])
else
AC_DEFINE_UNQUOTED(GUILE_VERSION, "$GUILE_VERSION",
[Guile version number])
AC_DEFINE_UNQUOTED(GUILE_VERSION_NUMBER, $GUILE_VERSION_NUMBER,
[Guile version number: MAX*10 + MIN])
m4_if($2,,,[$2])
fi
])