1# wmempcpy.m4 serial 1
2dnl Copyright (C) 2020-2021 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_FUNC_WMEMPCPY],
8[
9  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
10
11  dnl Persuade glibc <wchar.h> to declare wmempcpy().
12  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
13
14  dnl The wmempcpy() declaration in lib/wchar.in.h uses 'restrict'.
15  AC_REQUIRE([AC_C_RESTRICT])
16
17  AC_CHECK_FUNCS_ONCE([wmempcpy])
18  if test $ac_cv_func_wmempcpy = no; then
19    HAVE_WMEMPCPY=0
20  fi
21])
22