-# mmap-anon.m4 serial 3
-dnl Copyright (C) 2005 Free Software Foundation, Inc.
+# mmap-anon.m4 serial 4
+dnl Copyright (C) 2005, 2007 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_REQUIRE([AC_PROG_EGREP])
dnl Persuade glibc <sys/mman.h> to define MAP_ANONYMOUS.
- AC_REQUIRE([AC_GNU_SOURCE])
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
# Check for mmap()
AC_FUNC_MMAP