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