| 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 | |
| 70 | AC_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 | ]) |