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1 | # wmemchr.m4 serial 5 |
2 | dnl Copyright (C) 2011-2021 Free Software Foundation, Inc. | |
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3 | dnl This file is free software; the Free Software Foundation |
4 | dnl gives unlimited permission to copy and/or distribute it, | |
5 | dnl with or without modifications, as long as this notice is preserved. | |
6 | ||
7 | AC_DEFUN([gl_FUNC_WMEMCHR], | |
8 | [ | |
9 | AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) | |
10 | dnl We cannot use AC_CHECK_FUNCS here, because the MSVC 9 header files | |
11 | dnl provide this function as an inline function definition. | |
12 | AC_CACHE_CHECK([for wmemchr], [gl_cv_func_wmemchr], | |
13 | [AC_LINK_IFELSE( | |
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14 | [AC_LANG_PROGRAM( |
15 | [[#include <wchar.h> | |
16 | ]], | |
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17 | [[return ! wmemchr ((const wchar_t *) 0, (wchar_t) ' ', 0);]]) |
18 | ], | |
19 | [gl_cv_func_wmemchr=yes], | |
20 | [gl_cv_func_wmemchr=no]) | |
21 | ]) | |
22 | if test $gl_cv_func_wmemchr = no; then | |
23 | HAVE_WMEMCHR=0 | |
24 | fi | |
25 | ]) |