2 dnl Copyright (C) 2003-2004, 2006-2007, 2009-2018 Free Software Foundation,
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
8 AC_DEFUN([gl_FUNC_MEMPCPY],
10 dnl Persuade glibc <string.h> to declare mempcpy().
11 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
13 dnl The mempcpy() declaration in lib/string.in.h uses 'restrict'.
14 AC_REQUIRE([AC_C_RESTRICT])
16 AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
17 AC_CHECK_FUNCS([mempcpy])
18 if test $ac_cv_func_mempcpy = no; then
23 # Prerequisites of lib/mempcpy.c.
24 AC_DEFUN([gl_PREREQ_MEMPCPY], [