# Copyright (c) 2008 Rafael Laboissiere <rafael@laboissiere.net>
# Copyright (c) 2008 Andrew Collier
# Copyright (c) 2011 Murray Cumming <murrayc@openismus.com>
+# Copyright (c) 2018 Reini Urban <rurban@cpan.org>
+# Copyright (c) 2021 Vincent Danjean <Vincent.Danjean@ens-lyon.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
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 13
+#serial 15
AC_DEFUN([AX_PKG_SWIG],[
# Find path to the "swig" executable.
AC_PATH_PROGS([SWIG],[swig swig3.0 swig2.0])
if test -z "$SWIG" ; then
m4_ifval([$3],[$3],[:])
- elif test -n "$1" ; then
+ elif test -z "$1" ; then
+ m4_ifval([$2],[$2],[:])
+ else
AC_MSG_CHECKING([SWIG version])
[swig_version=`$SWIG -version 2>&1 | grep 'SWIG Version' | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`]
AC_MSG_RESULT([$swig_version])
if test -z "$required_major" ; then
[required_major=0]
fi
- [required=`echo $required | sed 's/[0-9]*[^0-9]//'`]
+ [required=`echo $required. | sed 's/[0-9]*[^0-9]//'`]
[required_minor=`echo $required | sed 's/[^0-9].*//'`]
if test -z "$required_minor" ; then
[required_minor=0]
fi
- [required=`echo $required | sed 's/[0-9]*[^0-9]//'`]
+ [required=`echo $required. | sed 's/[0-9]*[^0-9]//'`]
[required_patch=`echo $required | sed 's/[^0-9].*//'`]
if test -z "$required_patch" ; then
[required_patch=0]
m4_ifval([$3],[$3],[])
else
AC_MSG_CHECKING([for SWIG library])
- SWIG_LIB=`$SWIG -swiglib`
+ SWIG_LIB=`$SWIG -swiglib | tr '\r\n' ' '`
AC_MSG_RESULT([$SWIG_LIB])
m4_ifval([$2],[$2],[])
fi