https://github.com/trahay/Generic-Trace-Generator/pull/8
---
 src/C/gtg_compress.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/src/C/gtg_compress.c
+++ b/src/C/gtg_compress.c
@@ -1,4 +1,4 @@
-
+#define _GNU_SOURCE
 #include <stdlib.h>
 #include <stdint.h>
 #include <stdio.h>
