Some AIX version failed to compile if this was redefined.

diff --git a/ext/sockets/sockets.c b/ext/sockets/sockets.c
index c84d0bcd0707545339a78e9c87aba29ea4964bd3..f39b97566b5c5b6c06867704e65742ee021f9e42 100644 (file)
--- a/ext/sockets/sockets.c
+++ b/ext/sockets/sockets.c
@@ -29,7 +29,10 @@
 
 #if HAVE_SOCKETS
 
+#ifndef _XOPEN_SOURCE_EXTENDED
 #define _XOPEN_SOURCE_EXTENDED
+#endif
+
 #define _XPG4_2
 #define __EXTENSIONS__