1# =========================================================================== 2# https://www.gnu.org/software/autoconf-archive/ax_pkg_swig.html 3# =========================================================================== 4# 5# SYNOPSIS 6# 7# AX_PKG_SWIG([major.minor.micro], [action-if-found], [action-if-not-found]) 8# 9# DESCRIPTION 10# 11# This macro searches for a SWIG installation on your system. If found, 12# then SWIG is AC_SUBST'd; if not found, then $SWIG is empty. If SWIG is 13# found, then SWIG_LIB is set to the SWIG library path, and AC_SUBST'd. 14# 15# You can use the optional first argument to check if the version of the 16# available SWIG is greater than or equal to the value of the argument. It 17# should have the format: N[.N[.N]] (N is a number between 0 and 999. Only 18# the first N is mandatory.) If the version argument is given (e.g. 19# 1.3.17), AX_PKG_SWIG checks that the swig package is this version number 20# or higher. 21# 22# As usual, action-if-found is executed if SWIG is found, otherwise 23# action-if-not-found is executed. 24# 25# In configure.in, use as: 26# 27# AX_PKG_SWIG(1.3.17, [], [ AC_MSG_ERROR([SWIG is required to build..]) ]) 28# AX_SWIG_ENABLE_CXX 29# AX_SWIG_MULTI_MODULE_SUPPORT 30# AX_SWIG_PYTHON 31# 32# LICENSE 33# 34# Copyright (c) 2008 Sebastian Huber <sebastian-huber@web.de> 35# Copyright (c) 2008 Alan W. Irwin 36# Copyright (c) 2008 Rafael Laboissiere <rafael@laboissiere.net> 37# Copyright (c) 2008 Andrew Collier 38# Copyright (c) 2011 Murray Cumming <murrayc@openismus.com> 39# Copyright (c) 2018 Reini Urban <rurban@cpan.org> 40# Copyright (c) 2021 Vincent Danjean <Vincent.Danjean@ens-lyon.org> 41# 42# This program is free software; you can redistribute it and/or modify it 43# under the terms of the GNU General Public License as published by the 44# Free Software Foundation; either version 2 of the License, or (at your 45# option) any later version. 46# 47# This program is distributed in the hope that it will be useful, but 48# WITHOUT ANY WARRANTY; without even the implied warranty of 49# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 50# Public License for more details. 51# 52# You should have received a copy of the GNU General Public License along 53# with this program. If not, see <https://www.gnu.org/licenses/>. 54# 55# As a special exception, the respective Autoconf Macro's copyright owner 56# gives unlimited permission to copy, distribute and modify the configure 57# scripts that are the output of Autoconf when processing the Macro. You 58# need not follow the terms of the GNU General Public License when using 59# or distributing such scripts, even though portions of the text of the 60# Macro appear in them. The GNU General Public License (GPL) does govern 61# all other use of the material that constitutes the Autoconf Macro. 62# 63# This special exception to the GPL applies to versions of the Autoconf 64# Macro released by the Autoconf Archive. When you make and distribute a 65# modified version of the Autoconf Macro, you may extend this special 66# exception to the GPL to apply to your modified version as well. 67 68#serial 15 69 70AC_DEFUN([AX_PKG_SWIG],[ 71 # Find path to the "swig" executable. 72 AC_PATH_PROGS([SWIG],[swig swig3.0 swig2.0]) 73 if test -z "$SWIG" ; then 74 m4_ifval([$3],[$3],[:]) 75 elif test -z "$1" ; then 76 m4_ifval([$2],[$2],[:]) 77 else 78 AC_MSG_CHECKING([SWIG version]) 79 [swig_version=`$SWIG -version 2>&1 | grep 'SWIG Version' | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`] 80 AC_MSG_RESULT([$swig_version]) 81 if test -n "$swig_version" ; then 82 # Calculate the required version number components 83 [required=$1] 84 [required_major=`echo $required | sed 's/[^0-9].*//'`] 85 if test -z "$required_major" ; then 86 [required_major=0] 87 fi 88 [required=`echo $required. | sed 's/[0-9]*[^0-9]//'`] 89 [required_minor=`echo $required | sed 's/[^0-9].*//'`] 90 if test -z "$required_minor" ; then 91 [required_minor=0] 92 fi 93 [required=`echo $required. | sed 's/[0-9]*[^0-9]//'`] 94 [required_patch=`echo $required | sed 's/[^0-9].*//'`] 95 if test -z "$required_patch" ; then 96 [required_patch=0] 97 fi 98 # Calculate the available version number components 99 [available=$swig_version] 100 [available_major=`echo $available | sed 's/[^0-9].*//'`] 101 if test -z "$available_major" ; then 102 [available_major=0] 103 fi 104 [available=`echo $available | sed 's/[0-9]*[^0-9]//'`] 105 [available_minor=`echo $available | sed 's/[^0-9].*//'`] 106 if test -z "$available_minor" ; then 107 [available_minor=0] 108 fi 109 [available=`echo $available | sed 's/[0-9]*[^0-9]//'`] 110 [available_patch=`echo $available | sed 's/[^0-9].*//'`] 111 if test -z "$available_patch" ; then 112 [available_patch=0] 113 fi 114 # Convert the version tuple into a single number for easier comparison. 115 # Using base 100 should be safe since SWIG internally uses BCD values 116 # to encode its version number. 117 required_swig_vernum=`expr $required_major \* 10000 \ 118 \+ $required_minor \* 100 \+ $required_patch` 119 available_swig_vernum=`expr $available_major \* 10000 \ 120 \+ $available_minor \* 100 \+ $available_patch` 121 122 if test $available_swig_vernum -lt $required_swig_vernum; then 123 AC_MSG_WARN([SWIG version >= $1 is required. You have $swig_version.]) 124 SWIG='' 125 m4_ifval([$3],[$3],[]) 126 else 127 AC_MSG_CHECKING([for SWIG library]) 128 SWIG_LIB=`$SWIG -swiglib | tr '\r\n' ' '` 129 AC_MSG_RESULT([$SWIG_LIB]) 130 m4_ifval([$2],[$2],[]) 131 fi 132 else 133 AC_MSG_WARN([cannot determine SWIG version]) 134 SWIG='' 135 m4_ifval([$3],[$3],[]) 136 fi 137 fi 138 AC_SUBST([SWIG_LIB]) 139]) 140