1# =========================================================================== 2# http://www.gnu.org/software/autoconf-archive/ax_append_link_flags.html 3# =========================================================================== 4# 5# SYNOPSIS 6# 7# AX_APPEND_LINK_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS]) 8# 9# DESCRIPTION 10# 11# For every FLAG1, FLAG2 it is checked whether the linker works with the 12# flag. If it does, the flag is added FLAGS-VARIABLE 13# 14# If FLAGS-VARIABLE is not specified, the linker's flags (LDFLAGS) is 15# used. During the check the flag is always added to the linker's flags. 16# 17# If EXTRA-FLAGS is defined, it is added to the linker's default flags 18# when the check is done. The check is thus made with the flags: "LDFLAGS 19# EXTRA-FLAGS FLAG". This can for example be used to force the linker to 20# issue an error when a bad flag is given. 21# 22# NOTE: This macro depends on the AX_APPEND_FLAG and AX_CHECK_LINK_FLAG. 23# Please keep this macro in sync with AX_APPEND_COMPILE_FLAGS. 24# 25# LICENSE 26# 27# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> 28# 29# This program is free software: you can redistribute it and/or modify it 30# under the terms of the GNU General Public License as published by the 31# Free Software Foundation, either version 3 of the License, or (at your 32# option) any later version. 33# 34# This program is distributed in the hope that it will be useful, but 35# WITHOUT ANY WARRANTY; without even the implied warranty of 36# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 37# Public License for more details. 38# 39# You should have received a copy of the GNU General Public License along 40# with this program. If not, see <http://www.gnu.org/licenses/>. 41# 42# As a special exception, the respective Autoconf Macro's copyright owner 43# gives unlimited permission to copy, distribute and modify the configure 44# scripts that are the output of Autoconf when processing the Macro. You 45# need not follow the terms of the GNU General Public License when using 46# or distributing such scripts, even though portions of the text of the 47# Macro appear in them. The GNU General Public License (GPL) does govern 48# all other use of the material that constitutes the Autoconf Macro. 49# 50# This special exception to the GPL applies to versions of the Autoconf 51# Macro released by the Autoconf Archive. When you make and distribute a 52# modified version of the Autoconf Macro, you may extend this special 53# exception to the GPL to apply to your modified version as well. 54 55#serial 4 56 57AC_DEFUN([AX_APPEND_LINK_FLAGS], 58[AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) 59AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) 60for flag in $1; do 61 AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3]) 62done 63])dnl AX_APPEND_LINK_FLAGS 64