1*7c568831SAndroid Build Coastguard Worker# =========================================================================== 2*7c568831SAndroid Build Coastguard Worker# https://www.gnu.org/software/autoconf-archive/ax_append_flag.html 3*7c568831SAndroid Build Coastguard Worker# =========================================================================== 4*7c568831SAndroid Build Coastguard Worker# 5*7c568831SAndroid Build Coastguard Worker# SYNOPSIS 6*7c568831SAndroid Build Coastguard Worker# 7*7c568831SAndroid Build Coastguard Worker# AX_APPEND_FLAG(FLAG, [FLAGS-VARIABLE]) 8*7c568831SAndroid Build Coastguard Worker# 9*7c568831SAndroid Build Coastguard Worker# DESCRIPTION 10*7c568831SAndroid Build Coastguard Worker# 11*7c568831SAndroid Build Coastguard Worker# FLAG is appended to the FLAGS-VARIABLE shell variable, with a space 12*7c568831SAndroid Build Coastguard Worker# added in between. 13*7c568831SAndroid Build Coastguard Worker# 14*7c568831SAndroid Build Coastguard Worker# If FLAGS-VARIABLE is not specified, the current language's flags (e.g. 15*7c568831SAndroid Build Coastguard Worker# CFLAGS) is used. FLAGS-VARIABLE is not changed if it already contains 16*7c568831SAndroid Build Coastguard Worker# FLAG. If FLAGS-VARIABLE is unset in the shell, it is set to exactly 17*7c568831SAndroid Build Coastguard Worker# FLAG. 18*7c568831SAndroid Build Coastguard Worker# 19*7c568831SAndroid Build Coastguard Worker# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. 20*7c568831SAndroid Build Coastguard Worker# 21*7c568831SAndroid Build Coastguard Worker# LICENSE 22*7c568831SAndroid Build Coastguard Worker# 23*7c568831SAndroid Build Coastguard Worker# Copyright (c) 2008 Guido U. Draheim <[email protected]> 24*7c568831SAndroid Build Coastguard Worker# Copyright (c) 2011 Maarten Bosmans <[email protected]> 25*7c568831SAndroid Build Coastguard Worker# 26*7c568831SAndroid Build Coastguard Worker# Copying and distribution of this file, with or without modification, are 27*7c568831SAndroid Build Coastguard Worker# permitted in any medium without royalty provided the copyright notice 28*7c568831SAndroid Build Coastguard Worker# and this notice are preserved. This file is offered as-is, without any 29*7c568831SAndroid Build Coastguard Worker# warranty. 30*7c568831SAndroid Build Coastguard Worker 31*7c568831SAndroid Build Coastguard Worker#serial 8 32*7c568831SAndroid Build Coastguard Worker 33*7c568831SAndroid Build Coastguard WorkerAC_DEFUN([AX_APPEND_FLAG], 34*7c568831SAndroid Build Coastguard Worker[dnl 35*7c568831SAndroid Build Coastguard WorkerAC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_SET_IF 36*7c568831SAndroid Build Coastguard WorkerAS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])]) 37*7c568831SAndroid Build Coastguard WorkerAS_VAR_SET_IF(FLAGS,[ 38*7c568831SAndroid Build Coastguard Worker AS_CASE([" AS_VAR_GET(FLAGS) "], 39*7c568831SAndroid Build Coastguard Worker [*" $1 "*], [AC_RUN_LOG([: FLAGS already contains $1])], 40*7c568831SAndroid Build Coastguard Worker [ 41*7c568831SAndroid Build Coastguard Worker AS_VAR_APPEND(FLAGS,[" $1"]) 42*7c568831SAndroid Build Coastguard Worker AC_RUN_LOG([: FLAGS="$FLAGS"]) 43*7c568831SAndroid Build Coastguard Worker ]) 44*7c568831SAndroid Build Coastguard Worker ], 45*7c568831SAndroid Build Coastguard Worker [ 46*7c568831SAndroid Build Coastguard Worker AS_VAR_SET(FLAGS,[$1]) 47*7c568831SAndroid Build Coastguard Worker AC_RUN_LOG([: FLAGS="$FLAGS"]) 48*7c568831SAndroid Build Coastguard Worker ]) 49*7c568831SAndroid Build Coastguard WorkerAS_VAR_POPDEF([FLAGS])dnl 50*7c568831SAndroid Build Coastguard Worker])dnl AX_APPEND_FLAG 51