__USE_GNU shall not be defined by application

diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index d9c7d682365c5e2f8697e65000f28f1f0e4c6615..b17a8da7091852b4c19de47b6f8d8c1b72e9b36b 100644 (file)
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -25,7 +25,6 @@
 
 #if HAVE_FOPENCOOKIE 
 #define _GNU_SOURCE
-#define __USE_GNU
 #include <stdio.h>
 #endif