# =========================================================================== # http://autoconf-archive.cryp.to/ax_gxx_version.html # =========================================================================== # # SYNOPSIS # # AX_GXX_VERSION # # DESCRIPTION # # This macro retrieves the g++ version and returns it in the GXX_VERSION # variable if available, an empty string otherwise. # # LAST MODIFICATION # # 2008-04-12 # # COPYLEFT # # Copyright (c) 2008 Francesco Salvestrini <salvestrini@users.sourceforge.net> # # This program is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the # Free Software Foundation; either version 2 of the License, or (at your # option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General # Public License for more details. # # You should have received a copy of the GNU General Public License along # with this program. If not, see <http://www.gnu.org/licenses/>. # # As a special exception, the respective Autoconf Macro's copyright owner # gives unlimited permission to copy, distribute and modify the configure # scripts that are the output of Autoconf when processing the Macro. You # need not follow the terms of the GNU General Public License when using # or distributing such scripts, even though portions of the text of the # Macro appear in them. The GNU General Public License (GPL) does govern # all other use of the material that constitutes the Autoconf Macro. # # This special exception to the GPL applies to versions of the Autoconf # Macro released by the Autoconf Macro Archive. When you make and # distribute a modified version of the Autoconf Macro, you may extend this # special exception to the GPL to apply to your modified version as well. AC_DEFUN([AX_GXX_VERSION], [ GXX_VERSION="" AX_GCC_OPTION([-dumpversion],[],[],[ ax_gcc_version_option=yes ],[ ax_gcc_version_option=no ]) AS_IF([test "x$GXX" = "xyes"],[ AS_IF([test "x$ax_gxx_version_option" != "no"],[ AC_CACHE_CHECK([gxx version],[ax_cv_gxx_version],[ ax_cv_gxx_version="`$CXX -dumpversion`" AS_IF([test "x$ax_cv_gxx_version" = "x"],[ ax_cv_gxx_version="" ]) ]) GXX_VERSION=$ax_cv_gxx_version ]) ]) AC_SUBST([GXX_VERSION]) ])