--- src/unix/qsh_unix.c.orig 2011-10-22 17:46:37.665993357 -0500 +++ src/unix/qsh_unix.c 2011-10-22 17:46:40.965972209 -0500 @@ -17,6 +17,9 @@ * Temple Place - Suite 330, Boston, MA 02111-1307, USA. * */ +#if !defined(_GNU_SOURCE) + #define _GNU_SOURCE +#endif #include #include #include