|
111
|
1 # ===========================================================================
|
|
|
2 # http://www.gnu.org/software/autoconf-archive/ax_check_define.html
|
|
|
3 # ===========================================================================
|
|
|
4 #
|
|
|
5 # SYNOPSIS
|
|
|
6 #
|
|
|
7 # AC_CHECK_DEFINE([symbol], [ACTION-IF-FOUND], [ACTION-IF-NOT])
|
|
|
8 # AX_CHECK_DEFINE([includes],[symbol], [ACTION-IF-FOUND], [ACTION-IF-NOT])
|
|
|
9 #
|
|
|
10 # DESCRIPTION
|
|
|
11 #
|
|
|
12 # Complements AC_CHECK_FUNC but it does not check for a function but for a
|
|
|
13 # define to exist. Consider a usage like:
|
|
|
14 #
|
|
|
15 # AC_CHECK_DEFINE(__STRICT_ANSI__, CFLAGS="$CFLAGS -D_XOPEN_SOURCE=500")
|
|
|
16 #
|
|
|
17 # LICENSE
|
|
|
18 #
|
|
|
19 # Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
|
|
|
20 #
|
|
|
21 # This program is free software; you can redistribute it and/or modify it
|
|
|
22 # under the terms of the GNU General Public License as published by the
|
|
|
23 # Free Software Foundation; either version 3 of the License, or (at your
|
|
|
24 # option) any later version.
|
|
|
25 #
|
|
|
26 # This program is distributed in the hope that it will be useful, but
|
|
|
27 # WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
28 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
|
|
|
29 # Public License for more details.
|
|
|
30 #
|
|
|
31 # You should have received a copy of the GNU General Public License along
|
|
|
32 # with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
33 #
|
|
|
34 # As a special exception, the respective Autoconf Macro's copyright owner
|
|
|
35 # gives unlimited permission to copy, distribute and modify the configure
|
|
|
36 # scripts that are the output of Autoconf when processing the Macro. You
|
|
|
37 # need not follow the terms of the GNU General Public License when using
|
|
|
38 # or distributing such scripts, even though portions of the text of the
|
|
|
39 # Macro appear in them. The GNU General Public License (GPL) does govern
|
|
|
40 # all other use of the material that constitutes the Autoconf Macro.
|
|
|
41 #
|
|
|
42 # This special exception to the GPL applies to versions of the Autoconf
|
|
|
43 # Macro released by the Autoconf Archive. When you make and distribute a
|
|
|
44 # modified version of the Autoconf Macro, you may extend this special
|
|
|
45 # exception to the GPL to apply to your modified version as well.
|
|
|
46
|
|
|
47 #serial 8
|
|
|
48
|
|
|
49 AU_ALIAS([AC_CHECK_DEFINED], [AC_CHECK_DEFINE])
|
|
|
50 AC_DEFUN([AC_CHECK_DEFINE],[
|
|
|
51 AS_VAR_PUSHDEF([ac_var],[ac_cv_defined_$1])dnl
|
|
|
52 AC_CACHE_CHECK([for $1 defined], ac_var,
|
|
|
53 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
|
|
|
54 #ifdef $1
|
|
|
55 int ok;
|
|
|
56 #else
|
|
|
57 choke me
|
|
|
58 #endif
|
|
|
59 ]])],[AS_VAR_SET(ac_var, yes)],[AS_VAR_SET(ac_var, no)]))
|
|
|
60 AS_IF([test AS_VAR_GET(ac_var) != "no"], [$2], [$3])dnl
|
|
|
61 AS_VAR_POPDEF([ac_var])dnl
|
|
|
62 ])
|
|
|
63
|
|
|
64 AU_ALIAS([AX_CHECK_DEFINED], [AX_CHECK_DEFINE])
|
|
|
65 AC_DEFUN([AX_CHECK_DEFINE],[
|
|
|
66 AS_VAR_PUSHDEF([ac_var],[ac_cv_defined_$2_$1])dnl
|
|
|
67 AC_CACHE_CHECK([for $2 defined in $1], ac_var,
|
|
|
68 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <$1>]], [[
|
|
|
69 #ifdef $2
|
|
|
70 int ok;
|
|
|
71 #else
|
|
|
72 choke me
|
|
|
73 #endif
|
|
|
74 ]])],[AS_VAR_SET(ac_var, yes)],[AS_VAR_SET(ac_var, no)]))
|
|
|
75 AS_IF([test AS_VAR_GET(ac_var) != "no"], [$3], [$4])dnl
|
|
|
76 AS_VAR_POPDEF([ac_var])dnl
|
|
|
77 ])
|
|
|
78
|
|
|
79 AC_DEFUN([AX_CHECK_FUNC],
|
|
|
80 [AS_VAR_PUSHDEF([ac_var], [ac_cv_func_$2])dnl
|
|
|
81 AC_CACHE_CHECK([for $2], ac_var,
|
|
|
82 dnl AC_LANG_FUNC_LINK_TRY
|
|
|
83 [AC_LINK_IFELSE([AC_LANG_PROGRAM([$1
|
|
|
84 #undef $2
|
|
|
85 char $2 ();],[
|
|
|
86 char (*f) () = $2;
|
|
|
87 return f != $2; ])],
|
|
|
88 [AS_VAR_SET(ac_var, yes)],
|
|
|
89 [AS_VAR_SET(ac_var, no)])])
|
|
|
90 AS_IF([test AS_VAR_GET(ac_var) = yes], [$3], [$4])dnl
|
|
|
91 AS_VAR_POPDEF([ac_var])dnl
|
|
|
92 ])# AC_CHECK_FUNC
|
