tests: include config.h in weston-test-runner
diff --git a/tests/weston-test-runner.c b/tests/weston-test-runner.c
index 27ea9e4..7cc1cbe 100644
--- a/tests/weston-test-runner.c
+++ b/tests/weston-test-runner.c
@@ -20,6 +20,7 @@
  * OF THIS SOFTWARE.
  */
 
+#include "config.h"
 #include <unistd.h>
 #include <stdio.h>
 #include <stdlib.h>