ac_pkg_swig

This macro searches for a SWIG installation on your system. If found you should call SWIG via $(SWIG). You can use the optional first argument to check if the version of the available SWIG is greater than or equal to the value of the argument. It should have the format: N[.N[.N]] (N is a number between 0 and 999. Only the first N is mandatory.)

If the version argument is given (e.g. 1.3.17), AC_PROG_SWIG checks that the swig package is this version number or higher.

In configure.in, use as:

  AC_PROG_SWIG(1.3.17)
  SWIG_ENABLE_CXX
  SWIG_MULTI_MODULE_SUPPORT
  SWIG_PYTHON

AC_DEFUN([AC_PROG_SWIG],[
        AC_PATH_PROG([SWIG],[swig])
        if test -z "$SWIG" ; then
                AC_MSG_WARN([cannot find 'swig' program. You should look at http://www.swig.org])
                SWIG='echo "Error: SWIG is not installed. You should look at http://www.swig.org" ; false'
        elif test -n "$1" ; then
                AC_MSG_CHECKING([for SWIG version])
                [swig_version=`$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([$swig_version])
                if test -n "$swig_version" ; then
                        # Calculate the required version number components
                        [required=$1]
                        [required_major=`echo $required | sed 's/[^0-9].*//'`]
                        if test -z "$required_major" ; then
                                [required_major=0]
                        fi
                        [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_patch=`echo $required | sed 's/[^0-9].*//'`]
                        if test -z "$required_patch" ; then
                                [required_patch=0]
                        fi
                        # Calculate the available version number components
                        [available=$swig_version]
                        [available_major=`echo $available | sed 's/[^0-9].*//'`]
                        if test -z "$available_major" ; then
                                [available_major=0]
                        fi
                        [available=`echo $available | sed 's/[0-9]*[^0-9]//'`]
                        [available_minor=`echo $available | sed 's/[^0-9].*//'`]
                        if test -z "$available_minor" ; then
                                [available_minor=0]
                        fi
                        [available=`echo $available | sed 's/[0-9]*[^0-9]//'`]
                        [available_patch=`echo $available | sed 's/[^0-9].*//'`]
                        if test -z "$available_patch" ; then
                                [available_patch=0]
                        fi
                        if test $available_major -ne $required_major \
                                -o $available_minor -ne $required_minor \
                                -o $available_patch -lt $required_patch ; then
                                AC_MSG_WARN([SWIG version >= $1 is required.  You have $swig_version.  You should look at http://www.swig.org])
                                SWIG='echo "Error: SWIG version >= $1 is required.  You have '"$swig_version"'.  You should look at http://www.swig.org" ; false'
                        else
                                AC_MSG_NOTICE([SWIG executable is '$SWIG'])
                                SWIG_LIB=`$SWIG -swiglib`
                                AC_MSG_NOTICE([SWIG library directory is '$SWIG_LIB'])
                        fi
                else
                        AC_MSG_WARN([cannot determine SWIG version])
                        SWIG='echo "Error: Cannot determine SWIG version.  You should look at http://www.swig.org" ; false'
                fi
        fi
        AC_SUBST([SWIG_LIB])
])

Copyright © 2006 Sebastian Huber <sebastian-huber@web.de>
Copyright © 2006 Alan W. Irwin <irwin@beluga.phys.uvic.ca>
Copyright © 2006 Rafael Laboissiere <rafael@laboissiere.net>
Copyright © 2006 Andrew Collier <colliera@ukzn.ac.za>

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 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, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

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 Macro 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.