1# =========================================================================== 2# http://www.gnu.org/software/autoconf-archive/ax_append_compile_flags.html 3# =========================================================================== 4# 5# SYNOPSIS 6# 7# AX_APPEND_COMPILE_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS]) 8# 9# DESCRIPTION 10# 11# For every FLAG1, FLAG2 it is checked whether the compiler works with the 12# flag. If it does, the flag is added FLAGS-VARIABLE 13# 14# If FLAGS-VARIABLE is not specified, the current language's flags (e.g. 15# CFLAGS) is used. During the check the flag is always added to the 16# current language's flags. 17# 18# If EXTRA-FLAGS is defined, it is added to the current language's default 19# flags (e.g. CFLAGS) when the check is done. The check is thus made with 20# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to 21# force the compiler to issue an error when a bad flag is given. 22# 23# NOTE: This macro depends on the AX_APPEND_FLAG and 24# AX_CHECK_COMPILE_FLAG. Please keep this macro in sync with 25# AX_APPEND_LINK_FLAGS. 26# 27# LICENSE 28# 29# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> 30# 31# This program is free software: you can redistribute it and/or modify it 32# under the terms of the GNU General Public License as published by the 33# Free Software Foundation, either version 3 of the License, or (at your 34# option) any later version. 35# 36# This program is distributed in the hope that it will be useful, but 37# WITHOUT ANY WARRANTY; without even the implied warranty of 38# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 39# Public License for more details. 40# 41# You should have received a copy of the GNU General Public License along 42# with this program. If not, see <http://www.gnu.org/licenses/>. 43# 44# As a special exception, the respective Autoconf Macro's copyright owner 45# gives unlimited permission to copy, distribute and modify the configure 46# scripts that are the output of Autoconf when processing the Macro. You 47# need not follow the terms of the GNU General Public License when using 48# or distributing such scripts, even though portions of the text of the 49# Macro appear in them. The GNU General Public License (GPL) does govern 50# all other use of the material that constitutes the Autoconf Macro. 51# 52# This special exception to the GPL applies to versions of the Autoconf 53# Macro released by the Autoconf Archive. When you make and distribute a 54# modified version of the Autoconf Macro, you may extend this special 55# exception to the GPL to apply to your modified version as well. 56 57#serial 4 58 59AC_DEFUN([AX_APPEND_COMPILE_FLAGS], 60[AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) 61AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) 62for flag in $1; do 63 AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3]) 64done 65])dnl AX_APPEND_COMPILE_FLAGS 66