libyang BUGFIX set feature macro for strdup() on OSX
Since OS X requires different value (600) of _XOPEN_SOURCE feature test macro for
strdup() than linux (500), better use _POSIX_C_SOURCE 200809L. It is available
since glibc 2.12 (released 2010) so it shouldn't be an issue.
diff --git a/tools/lint/main.c b/tools/lint/main.c
index ebbd7f8..44eca9b 100644
--- a/tools/lint/main.c
+++ b/tools/lint/main.c
@@ -13,6 +13,7 @@
*/
#define _GNU_SOURCE
+#define _POSIX_C_SOURCE 200809L /* strdup */
#include <stdint.h>
#include <stdio.h>