1 # Copyright (c) 2015 Lucas De Marchi <lucas.de.marchi@gmail.com>
3 # This program is free software: you can redistribute it and/or modify it
4 # under the terms of the GNU General Public License as published by the
5 # Free Software Foundation, either version 2 of the License, or (at your
6 # option) any later version.
8 # This program is distributed in the hope that it will be useful, but
9 # WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
11 # Public License for more details.
13 # You should have received a copy of the GNU General Public License along
14 # with this program. If not, see <http://www.gnu.org/licenses/>.
16 # As a special exception, the respective Autoconf Macro's copyright owner
17 # gives unlimited permission to copy, distribute and modify the configure
18 # scripts that are the output of Autoconf when processing the Macro. You
19 # need not follow the terms of the GNU General Public License when using
20 # or distributing such scripts, even though portions of the text of the
21 # Macro appear in them. The GNU General Public License (GPL) does govern
22 # all other use of the material that constitutes the Autoconf Macro.
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29 # CC_FEATURE_APPEND([FLAGS], [ENV-TO-CHECK], [FLAG-NAME])
30 AC_DEFUN([CC_FEATURE_APPEND], [
31 AS_VAR_PUSHDEF([FLAGS], [$1])dnl
32 AS_VAR_PUSHDEF([ENV_CHECK], [$2])dnl
33 AS_VAR_PUSHDEF([FLAG_NAME], [$3])dnl
35 AS_CASE([" AS_VAR_GET(FLAGS) " ],
36 [*" FLAG_NAME "*], [AC_RUN_LOG([: FLAGS already contains FLAG_NAME])],
38 AS_IF([test "x$FLAGS" != "x"], [AS_VAR_APPEND(FLAGS, " ")])
39 AS_IF([test "x$ENV_CHECK" = "xyes"],
40 [AS_VAR_APPEND(FLAGS, "+FLAG_NAME")],
41 [AS_VAR_APPEND(FLAGS, "-FLAG_NAME")])
45 AS_VAR_POPDEF([FLAG_NAME])dnl
46 AS_VAR_POPDEF([ENV_CHECK])dnl
47 AS_VAR_POPDEF([FLAGS])dnl