Index: xmms2-0.8DrO_o/src/xmms/visualization/unixshm.c
===================================================================
--- xmms2-0.8DrO_o.orig/src/xmms/visualization/unixshm.c
+++ xmms2-0.8DrO_o/src/xmms/visualization/unixshm.c
@@ -14,6 +14,7 @@
  *  Lesser General Public License for more details.
  */
 
+#define _GNU_SOURCE
 #include <sys/shm.h>
 #include <sys/sem.h>
 #include <sys/stat.h>