add macro for some GNU externsion

SpongeBab · Sep 5, 2019 · c3b06d0 · c3b06d0
1 parent d6e443a
commit c3b06d0
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/image.c b/src/image.c
@@ -1,3 +1,6 @@
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
 #include "image.h"
 #include "utils.h"
 #include "blas.h"