2 dnl Copyright (C) 2002-2003, 2005-2007, 2009-2016 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_MEMRCHR],
10 dnl Persuade glibc <string.h> to declare memrchr().
11 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
13 AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
14 AC_CHECK_DECLS_ONCE([memrchr])
15 if test $ac_cv_have_decl_memrchr = no; then
19 AC_CHECK_FUNCS([memrchr])
22 # Prerequisites of lib/memrchr.c.
23 AC_DEFUN([gl_PREREQ_MEMRCHR], [:])