##### http://autoconf-archive.cryp.to/ac_pkg_swig.html
#
# SYNOPSIS
#
# AC_PROG_SWIG([major.minor.micro])
#
# DESCRIPTION
#
# 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
#
# LAST MODIFICATION
#
# 2006-10-22
#
# COPYLEFT
#
# Copyright (c) 2006 Sebastian Huber <sebastian-huber@web.de>
# Copyright (c) 2006 Alan W. Irwin <irwin@beluga.phys.uvic.ca>
# Copyright (c) 2006 Rafael Laboissiere <rafael@laboissiere.net>
# Copyright (c) 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.
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])
])
# SWIG_ENABLE_CXX()
#
# Enable SWIG C++ support. This affects all invocations of $(SWIG).
AC_DEFUN([SWIG_ENABLE_CXX],[
AC_REQUIRE([AC_PROG_SWIG])
AC_REQUIRE([AC_PROG_CXX])
SWIG="$SWIG -c++"
])
# SWIG_MULTI_MODULE_SUPPORT()
#
# Enable support for multiple modules. This effects all invocations
# of $(SWIG). You have to link all generated modules against the
# appropriate SWIG runtime library. If you want to build Python
# modules for example, use the SWIG_PYTHON() macro and link the
# modules against $(SWIG_PYTHON_LIBS).
AC_DEFUN([SWIG_MULTI_MODULE_SUPPORT],[
AC_REQUIRE([AC_PROG_SWIG])
SWIG="$SWIG -c"
])
# SWIG_PYTHON([use-shadow-classes = {no, yes}])
#
# Checks for Python and provides the $(SWIG_PYTHON_CPPFLAGS),
# $(SWIG_PYTHON_LIBS) and $(SWIG_PYTHON_OPT) output variables.
# $(SWIG_PYTHON_OPT) contains all necessary SWIG options to generate
# code for Python. Shadow classes are enabled unless the value of the
# optional first argument is exactly 'no'. If you need multi module
# support (provided by the SWIG_MULTI_MODULE_SUPPORT() macro) use
# $(SWIG_PYTHON_LIBS) to link against the appropriate library. It
# contains the SWIG Python runtime library that is needed by the type
# check system for example.
AC_DEFUN([SWIG_PYTHON],[
AC_REQUIRE([AC_PROG_SWIG])
AC_REQUIRE([AC_PYTHON_DEVEL])
test "x$1" != "xno" || swig_shadow=" -noproxy"
AC_SUBST([SWIG_PYTHON_OPT],[-python$swig_shadow])
AC_SUBST([SWIG_PYTHON_CPPFLAGS],[$PYTHON_CPPFLAGS])
AC_SUBST([SWIG_PYTHON_LIBS],["-L$SWIG_LIB -lswigpy"])
])
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