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author | Evgeny Grin (Karlson2k) <k2k@narod.ru> | 2014-02-26 17:55:00 +0000 |
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committer | Evgeny Grin (Karlson2k) <k2k@narod.ru> | 2014-02-26 17:55:00 +0000 |
commit | 10885877079c17e5108037df03f7c22ef8e68b89 (patch) | |
tree | 86bfd0a876a7246c8593f6cff03bbfa63ed62e27 /m4/ax_append_compile_flags.m4 | |
parent | 756e2da3811719b8142813a48e3da4a0e2ffcb9e (diff) | |
download | libmicrohttpd-10885877079c17e5108037df03f7c22ef8e68b89.tar.gz libmicrohttpd-10885877079c17e5108037df03f7c22ef8e68b89.zip |
Correctly check compiler flags with autoconf archive macros, add compiler flag before other compiler checks
Diffstat (limited to 'm4/ax_append_compile_flags.m4')
-rw-r--r-- | m4/ax_append_compile_flags.m4 | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/m4/ax_append_compile_flags.m4 b/m4/ax_append_compile_flags.m4 new file mode 100644 index 00000000..dc7b8660 --- /dev/null +++ b/m4/ax_append_compile_flags.m4 | |||
@@ -0,0 +1,65 @@ | |||
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@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 4 | ||
58 | |||
59 | AC_DEFUN([AX_APPEND_COMPILE_FLAGS], | ||
60 | [AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) | ||
61 | AX_REQUIRE_DEFINED([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 | ||