Fixed warning re defining GNU_SOURCE. Can probably just remove it since it's defined...

diff --git a/gnuradio-core/src/lib/filter/gr_sincos.c b/gnuradio-core/src/lib/filter/gr_sincos.c
index 240a84852606fd6bad1d663fa9d3639c211b0a77..3543ebfde7208d8ebaf45f795d10f76e91f648cf 100644 (file)
--- a/gnuradio-core/src/lib/filter/gr_sincos.c
+++ b/gnuradio-core/src/lib/filter/gr_sincos.c
@@ -24,7 +24,9 @@
 #include "config.h"
 #endif
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE            // ask for GNU extensions if available
+#endif
 
 #include <gr_sincos.h>
 #include <math.h>