source: filezilla/trunk/fuentes/m4/ax_check_define.m4 @ 130

Last change on this file since 130 was 130, checked in by jrpelegrina, 4 years ago

First release to xenial

File size: 3.4 KB
Line 
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
49AU_ALIAS([AC_CHECK_DEFINED], [AC_CHECK_DEFINE])
50AC_DEFUN([AC_CHECK_DEFINE],[
51AS_VAR_PUSHDEF([ac_var],[ac_cv_defined_$1])dnl
52AC_CACHE_CHECK([for $1 defined], ac_var,
53AC_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)]))
60AS_IF([test AS_VAR_GET(ac_var) != "no"], [$2], [$3])dnl
61AS_VAR_POPDEF([ac_var])dnl
62])
63
64AU_ALIAS([AX_CHECK_DEFINED], [AX_CHECK_DEFINE])
65AC_DEFUN([AX_CHECK_DEFINE],[
66AS_VAR_PUSHDEF([ac_var],[ac_cv_defined_$2_$1])dnl
67AC_CACHE_CHECK([for $2 defined in $1], ac_var,
68AC_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)]))
75AS_IF([test AS_VAR_GET(ac_var) != "no"], [$3], [$4])dnl
76AS_VAR_POPDEF([ac_var])dnl
77])
78
79AC_DEFUN([AX_CHECK_FUNC],
80[AS_VAR_PUSHDEF([ac_var], [ac_cv_func_$2])dnl
81AC_CACHE_CHECK([for $2], ac_var,
82dnl 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)])])
90AS_IF([test AS_VAR_GET(ac_var) = yes], [$3], [$4])dnl
91AS_VAR_POPDEF([ac_var])dnl
92])# AC_CHECK_FUNC
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