pextlib: Add _GNU_SOURCE define for vasprintf on Linux
--- trunk/base/src/pextlib1.0/Pextlib.c 2015-07-25 11:13:18 UTC (rev 138965)
+++ trunk/base/src/pextlib1.0/Pextlib.c 2015-07-25 11:25:54 UTC (rev 138966)
@@ -43,6 +43,8 @@
#define _BSD_SOURCE
/* required for clearenv(3)/setenv(3)/unsetenv(3) on OS X */
#define _DARWIN_C_SOURCE
+/* required for vasprintf(3) on Linux */
+#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/socket.h>