python: define _BaseObject._ptr property
[babeltrace.git] / m4 / ax_pkg_swig.m4
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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])
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