Move feature test macros to config.mk

1 files changed, 0 insertions, 1 deletions

diff --git a/window.c b/window.c
index 43bae70..82178ec 100644
--- a/window.c
+++ b/window.c
@@ -13,7 +13,6 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
-#define _XOPEN_SOURCE
 #include <string.h>
 #include <stdlib.h>
 #include <wchar.h>