$OpenBSD$

Index: examples/multiprocess_c/multi.c
--- examples/multiprocess_c/multi.c.orig
+++ examples/multiprocess_c/multi.c
@@ -21,6 +21,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/types.h>
+#include <sys/time.h>
 #include <sys/wait.h>
 
 #define FORKS 5
