1 # ===========================================================================
2 # http://www.gnu.org/software/autoconf-archive/ax_append_compile_flags.html
3 # ===========================================================================
7 # AX_APPEND_COMPILE_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT])
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
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.
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.
23 # INPUT gives an alternative input source to AC_COMPILE_IFELSE.
25 # NOTE: This macro depends on the AX_APPEND_FLAG and
26 # AX_CHECK_COMPILE_FLAG. Please keep this macro in sync with
27 # AX_APPEND_LINK_FLAGS.
31 # Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
33 # This program is free software: you can redistribute it and/or modify it
34 # under the terms of the GNU General Public License as published by the
35 # Free Software Foundation, either version 3 of the License, or (at your
36 # option) any later version.
38 # This program is distributed in the hope that it will be useful, but
39 # WITHOUT ANY WARRANTY; without even the implied warranty of
40 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
41 # Public License for more details.
43 # You should have received a copy of the GNU General Public License along
44 # with this program. If not, see <http://www.gnu.org/licenses/>.
46 # As a special exception, the respective Autoconf Macro's copyright owner
47 # gives unlimited permission to copy, distribute and modify the configure
48 # scripts that are the output of Autoconf when processing the Macro. You
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50 # or distributing such scripts, even though portions of the text of the
51 # Macro appear in them. The GNU General Public License (GPL) does govern
52 # all other use of the material that constitutes the Autoconf Macro.
54 # This special exception to the GPL applies to versions of the Autoconf
55 # Macro released by the Autoconf Archive. When you make and distribute a
56 # modified version of the Autoconf Macro, you may extend this special
57 # exception to the GPL to apply to your modified version as well.
61 AC_DEFUN([AX_APPEND_COMPILE_FLAGS],
62 [AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
63 AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
65 AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3], [$4])
67 ])dnl AX_APPEND_COMPILE_FLAGS