diff -r 56cda23f48d4 -r bb7a1f5a8b48 src/server/util/io.c
--- a/src/server/util/io.c	Mon Dec 31 00:07:52 2012 +0100
+++ b/src/server/util/io.c	Tue Jan 01 13:32:04 2013 +0100
@@ -26,6 +26,10 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#ifdef __gnu_linux__
+#define _GNU_SOURCE
+#endif
+
 #include <unistd.h>
 #include <stdlib.h>
 #include <sys/uio.h>