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