--- a/src/libgo/go/syscall/wait.c
+++ b/src/libgo/go/syscall/wait.c
@@ -8,6 +8,9 @@
    OS-independent.  */
 
 #include <stdint.h>
+#ifndef WCONTINUED
+#define WCONTINUED 0
+#endif
 #include <sys/wait.h>
 
 #include "runtime.h"