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- # 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
- ])
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