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 (a] 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 3 58 59 AC_DEFUN([AX_APPEND_COMPILE_FLAGS], 60 [AC_REQUIRE([AX_CHECK_COMPILE_FLAG]) 61 AC_REQUIRE([AX_APPEND_FLAG]) 62 for flag in $1; do 63 AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3]) 64 done 65 ])dnl AX_APPEND_COMPILE_FLAGS 66
