Explain the need for _GNU_SOURCE

diff --git a/src/daemon/plugin.c b/src/daemon/plugin.c
index 987f40aaf431c030de6cff4b3b4007b72c806d72..08c5199566a6a0134f1bf39a0042205d7ecdd588 100644 (file)
--- a/src/daemon/plugin.c
+++ b/src/daemon/plugin.c
@@ -25,7 +25,9 @@
  *   Sebastian Harl <sh at tokkee.org>
  **/
 
-#define _GNU_SOURCE 
+/* _GNU_SOURCE is needed in Linux to use pthread_setname_np */
+#define _GNU_SOURCE
+
 #include "collectd.h"
 
 #include "common.h"