3 dnl Copyright (C) 2003-2004, 2006-2007, 2009-2024 Free Software Foundation,
5 dnl This file is free software; the Free Software Foundation
6 dnl gives unlimited permission to copy and/or distribute it,
7 dnl with or without modifications, as long as this notice is preserved.
8 dnl This file is offered as-is, without any warranty.
10 AC_DEFUN([gl_FUNC_MEMPCPY],
12 dnl Persuade glibc <string.h> to declare mempcpy().
13 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
15 dnl The mempcpy() declaration in lib/string.in.h uses 'restrict'.
16 AC_REQUIRE([AC_C_RESTRICT])
18 AC_REQUIRE([gl_STRING_H_DEFAULTS])
19 gl_CHECK_FUNCS_ANDROID([mempcpy], [[#include <string.h>]])
20 if test $ac_cv_func_mempcpy = no; then
22 case "$gl_cv_onwards_func_mempcpy" in
23 future*) REPLACE_MEMPCPY=1 ;;
28 # Prerequisites of lib/mempcpy.c.
29 AC_DEFUN([gl_PREREQ_MEMPCPY], [