Index: eina/configure.ac
===================================================================
--- eina.orig/configure.ac	2009-11-26 15:58:28.784112802 +0100
+++ eina/configure.ac	2009-11-26 15:59:34.524939842 +0100
@@ -273,6 +273,7 @@
 AC_C_INLINE
 AC_C___ATTRIBUTE__
 AC_PROG_CC_STDC
+AC_GNU_SOURCE
 
 EINA_CPPFLAGS=""
 case "$host_os" in