we need _GNU_SOURCE for popen

[r18417]

diff --git a/main.c b/main.c
index 0f04c77..7beaea6 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,5 +1,7 @@
 #include <config.h>
 
+#define _GNU_SOURCE
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <errno.h>