77 lines
3.2 KiB
Text
77 lines
3.2 KiB
Text
|
# ===========================================================================
|
||
|
|
# http://www.gnu.org/software/autoconf-archive/ax_check_compiler_flags.html
|
||
|
|
# ===========================================================================
|
||
|
|
#
|
||
|
|
# SYNOPSIS
|
||
|
|
#
|
||
|
|
# AX_CHECK_COMPILER_FLAGS(FLAGS, [ACTION-SUCCESS], [ACTION-FAILURE])
|
||
|
|
#
|
||
|
|
# DESCRIPTION
|
||
|
|
#
|
||
|
|
# Check whether the given compiler FLAGS work with the current language's
|
||
|
|
# compiler, or whether they give an error. (Warnings, however, are
|
||
|
|
# ignored.)
|
||
|
|
#
|
||
|
|
# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
|
||
|
|
# success/failure.
|
||
|
|
#
|
||
|
|
# LICENSE
|
||
|
|
#
|
||
|
|
# Copyright (c) 2009 Steven G. Johnson <stevenj@alum.mit.edu>
|
||
|
|
# Copyright (c) 2009 Matteo Frigo
|
||
|
|
#
|
||
|
|
# 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 3 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 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.
|
||
|
|
|
||
|
|
#serial 9
|
||
|
|
|
||
|
|
AC_DEFUN([AX_CHECK_COMPILER_FLAGS],
|
||
|
|
[AC_PREREQ(2.59) dnl for _AC_LANG_PREFIX
|
||
|
|
AC_MSG_CHECKING([whether _AC_LANG compiler accepts $1])
|
||
|
|
dnl Some hackery here since AC_CACHE_VAL can't handle a non-literal varname:
|
||
|
|
AS_LITERAL_IF([$1],
|
||
|
|
[AC_CACHE_VAL(AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1]), [
|
||
|
|
ax_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
|
||
|
|
_AC_LANG_PREFIX[]FLAGS="$1"
|
||
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
|
||
|
|
AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=yes,
|
||
|
|
AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=no)
|
||
|
|
_AC_LANG_PREFIX[]FLAGS=$ax_save_FLAGS])],
|
||
|
|
[ax_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
|
||
|
|
_AC_LANG_PREFIX[]FLAGS="$1"
|
||
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
|
||
|
|
eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=yes,
|
||
|
|
eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=no)
|
||
|
|
_AC_LANG_PREFIX[]FLAGS=$ax_save_FLAGS])
|
||
|
|
eval ax_check_compiler_flags=$AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])
|
||
|
|
AC_MSG_RESULT($ax_check_compiler_flags)
|
||
|
|
if test "x$ax_check_compiler_flags" = xyes; then
|
||
|
|
m4_default([$2], :)
|
||
|
|
else
|
||
|
|
m4_default([$3], :)
|
||
|
|
fi
|
||
|
|
])dnl AX_CHECK_COMPILER_FLAGS
|