-# getline.m4 serial 16
+# getline.m4 serial 18
dnl Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006, 2007 Free
dnl Software Foundation, Inc.
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
-AC_PREREQ([2.60])
+AC_PREREQ([2.59])
dnl See if there's a working, system-supplied version of the getline function.
dnl We can't just do AC_REPLACE_FUNCS(getline) because some systems
AC_REQUIRE([gl_STDIO_H_DEFAULTS])
dnl Persuade glibc <stdio.h> to declare getline().
- AC_REQUIRE([AC_GNU_SOURCE])
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
AC_CHECK_DECLS_ONCE([getline])