$OpenBSD: patch-schroedinger_schroasync-pthread_c,v 1.1.1.1 2009/07/18 08:53:08 sthen Exp $
--- schroedinger/schroasync-pthread.c.orig	Thu Jul  2 15:32:36 2009
+++ schroedinger/schroasync-pthread.c	Thu Jul  2 15:35:33 2009
@@ -20,6 +20,12 @@
 #include <sys/sysctl.h>
 #endif
 
+#if defined(__OpenBSD__)
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <machine/cpu.h>
+#endif
+
 struct _SchroAsync {
   int n_threads;
   int n_threads_running;
@@ -95,7 +101,7 @@ schro_async_new(int n_threads,
       if (s) {
         n_threads = atoi(s);
       }
-#elif defined(__APPLE__)
+#elif defined(__APPLE__) || defined(__OpenBSD__)
       {
         int    mib[]    = {CTL_HW, HW_NCPU};
         size_t dataSize =  sizeof(int);