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Fix MSVCBuilder so it can pass an alternate make command to the Builder
[wxWidgets.git] / build / aclocal / ax_gxx_version.m4
1 # ===========================================================================
2 # http://autoconf-archive.cryp.to/ax_gxx_version.html
3 # ===========================================================================
4 #
5 # SYNOPSIS
6 #
7 # AX_GXX_VERSION
8 #
9 # DESCRIPTION
10 #
11 # This macro retrieves the g++ version and returns it in the GXX_VERSION
12 # variable if available, an empty string otherwise.
13 #
14 # LAST MODIFICATION
15 #
16 # 2008-04-12
17 #
18 # COPYLEFT
19 #
20 # Copyright (c) 2008 Francesco Salvestrini <salvestrini@users.sourceforge.net>
21 #
22 # This program is free software; you can redistribute it and/or modify it
23 # under the terms of the GNU General Public License as published by the
24 # Free Software Foundation; either version 2 of the License, or (at your
25 # option) any later version.
26 #
27 # This program is distributed in the hope that it will be useful, but
28 # WITHOUT ANY WARRANTY; without even the implied warranty of
29 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
30 # Public License for more details.
31 #
32 # You should have received a copy of the GNU General Public License along
33 # with this program. If not, see <http://www.gnu.org/licenses/>.
34 #
35 # As a special exception, the respective Autoconf Macro's copyright owner
36 # gives unlimited permission to copy, distribute and modify the configure
37 # scripts that are the output of Autoconf when processing the Macro. You
38 # need not follow the terms of the GNU General Public License when using
39 # or distributing such scripts, even though portions of the text of the
40 # Macro appear in them. The GNU General Public License (GPL) does govern
41 # all other use of the material that constitutes the Autoconf Macro.
42 #
43 # This special exception to the GPL applies to versions of the Autoconf
44 # Macro released by the Autoconf Macro Archive. When you make and
45 # distribute a modified version of the Autoconf Macro, you may extend this
46 # special exception to the GPL to apply to your modified version as well.
47
48 AC_DEFUN([AX_GXX_VERSION], [
49 GXX_VERSION=""
50 AX_GCC_OPTION([-dumpversion],[],[],[
51 ax_gcc_version_option=yes
52 ],[
53 ax_gcc_version_option=no
54 ])
55 AS_IF([test "x$GXX" = "xyes"],[
56 AS_IF([test "x$ax_gxx_version_option" != "no"],[
57 AC_CACHE_CHECK([gxx version],[ax_cv_gxx_version],[
58 ax_cv_gxx_version="`$CXX -dumpversion`"
59 AS_IF([test "x$ax_cv_gxx_version" = "x"],[
60 ax_cv_gxx_version=""
61 ])
62 ])
63 GXX_VERSION=$ax_cv_gxx_version
64 ])
65 ])
66 AC_SUBST([GXX_VERSION])
67 ])