--- php-5.2.6/ext/posix/posix.c.orig	2008-06-03 20:39:01.000000000 +0200
+++ php-5.2.6/ext/posix/posix.c	2008-06-03 20:38:26.000000000 +0200
@@ -36,6 +36,12 @@
 #endif
 
 #include <sys/resource.h>
+/* We want domainname instead of __domainname */
+#ifdef _GNU_SOURCE
+#ifndef __USE_GNU
+#define __USE_GNU
+#endif
+#endif
 #include <sys/utsname.h>
 #include <sys/types.h>
 #include <sys/stat.h>