1*1b481fc3SMaciej Żenczykowski# =========================================================================== 2*1b481fc3SMaciej Żenczykowski# https://www.gnu.org/software/autoconf-archive/ax_append_flag.html 3*1b481fc3SMaciej Żenczykowski# =========================================================================== 4*1b481fc3SMaciej Żenczykowski# 5*1b481fc3SMaciej Żenczykowski# SYNOPSIS 6*1b481fc3SMaciej Żenczykowski# 7*1b481fc3SMaciej Żenczykowski# AX_APPEND_FLAG(FLAG, [FLAGS-VARIABLE]) 8*1b481fc3SMaciej Żenczykowski# 9*1b481fc3SMaciej Żenczykowski# DESCRIPTION 10*1b481fc3SMaciej Żenczykowski# 11*1b481fc3SMaciej Żenczykowski# FLAG is appended to the FLAGS-VARIABLE shell variable, with a space 12*1b481fc3SMaciej Żenczykowski# added in between. 13*1b481fc3SMaciej Żenczykowski# 14*1b481fc3SMaciej Żenczykowski# If FLAGS-VARIABLE is not specified, the current language's flags (e.g. 15*1b481fc3SMaciej Żenczykowski# CFLAGS) is used. FLAGS-VARIABLE is not changed if it already contains 16*1b481fc3SMaciej Żenczykowski# FLAG. If FLAGS-VARIABLE is unset in the shell, it is set to exactly 17*1b481fc3SMaciej Żenczykowski# FLAG. 18*1b481fc3SMaciej Żenczykowski# 19*1b481fc3SMaciej Żenczykowski# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. 20*1b481fc3SMaciej Żenczykowski# 21*1b481fc3SMaciej Żenczykowski# LICENSE 22*1b481fc3SMaciej Żenczykowski# 23*1b481fc3SMaciej Żenczykowski# Copyright (c) 2008 Guido U. Draheim <[email protected]> 24*1b481fc3SMaciej Żenczykowski# Copyright (c) 2011 Maarten Bosmans <[email protected]> 25*1b481fc3SMaciej Żenczykowski# 26*1b481fc3SMaciej Żenczykowski# This program is free software: you can redistribute it and/or modify it 27*1b481fc3SMaciej Żenczykowski# under the terms of the GNU General Public License as published by the 28*1b481fc3SMaciej Żenczykowski# Free Software Foundation, either version 3 of the License, or (at your 29*1b481fc3SMaciej Żenczykowski# option) any later version. 30*1b481fc3SMaciej Żenczykowski# 31*1b481fc3SMaciej Żenczykowski# This program is distributed in the hope that it will be useful, but 32*1b481fc3SMaciej Żenczykowski# WITHOUT ANY WARRANTY; without even the implied warranty of 33*1b481fc3SMaciej Żenczykowski# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 34*1b481fc3SMaciej Żenczykowski# Public License for more details. 35*1b481fc3SMaciej Żenczykowski# 36*1b481fc3SMaciej Żenczykowski# You should have received a copy of the GNU General Public License along 37*1b481fc3SMaciej Żenczykowski# with this program. If not, see <https://www.gnu.org/licenses/>. 38*1b481fc3SMaciej Żenczykowski# 39*1b481fc3SMaciej Żenczykowski# As a special exception, the respective Autoconf Macro's copyright owner 40*1b481fc3SMaciej Żenczykowski# gives unlimited permission to copy, distribute and modify the configure 41*1b481fc3SMaciej Żenczykowski# scripts that are the output of Autoconf when processing the Macro. You 42*1b481fc3SMaciej Żenczykowski# need not follow the terms of the GNU General Public License when using 43*1b481fc3SMaciej Żenczykowski# or distributing such scripts, even though portions of the text of the 44*1b481fc3SMaciej Żenczykowski# Macro appear in them. The GNU General Public License (GPL) does govern 45*1b481fc3SMaciej Żenczykowski# all other use of the material that constitutes the Autoconf Macro. 46*1b481fc3SMaciej Żenczykowski# 47*1b481fc3SMaciej Żenczykowski# This special exception to the GPL applies to versions of the Autoconf 48*1b481fc3SMaciej Żenczykowski# Macro released by the Autoconf Archive. When you make and distribute a 49*1b481fc3SMaciej Żenczykowski# modified version of the Autoconf Macro, you may extend this special 50*1b481fc3SMaciej Żenczykowski# exception to the GPL to apply to your modified version as well. 51*1b481fc3SMaciej Żenczykowski 52*1b481fc3SMaciej Żenczykowski#serial 7 53*1b481fc3SMaciej Żenczykowski 54*1b481fc3SMaciej ŻenczykowskiAC_DEFUN([AX_APPEND_FLAG], 55*1b481fc3SMaciej Żenczykowski[dnl 56*1b481fc3SMaciej ŻenczykowskiAC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_SET_IF 57*1b481fc3SMaciej ŻenczykowskiAS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])]) 58*1b481fc3SMaciej ŻenczykowskiAS_VAR_SET_IF(FLAGS,[ 59*1b481fc3SMaciej Żenczykowski AS_CASE([" AS_VAR_GET(FLAGS) "], 60*1b481fc3SMaciej Żenczykowski [*" $1 "*], [AC_RUN_LOG([: FLAGS already contains $1])], 61*1b481fc3SMaciej Żenczykowski [ 62*1b481fc3SMaciej Żenczykowski AS_VAR_APPEND(FLAGS,[" $1"]) 63*1b481fc3SMaciej Żenczykowski AC_RUN_LOG([: FLAGS="$FLAGS"]) 64*1b481fc3SMaciej Żenczykowski ]) 65*1b481fc3SMaciej Żenczykowski ], 66*1b481fc3SMaciej Żenczykowski [ 67*1b481fc3SMaciej Żenczykowski AS_VAR_SET(FLAGS,[$1]) 68*1b481fc3SMaciej Żenczykowski AC_RUN_LOG([: FLAGS="$FLAGS"]) 69*1b481fc3SMaciej Żenczykowski ]) 70*1b481fc3SMaciej ŻenczykowskiAS_VAR_POPDEF([FLAGS])dnl 71*1b481fc3SMaciej Żenczykowski])dnl AX_APPEND_FLAG 72