=== modified file 'libs/vos/vos/vosapp.cc'
--- old/libs/vos/vos/vosapp.cc	2007-04-12 03:18:14 +0000
+++ new/libs/vos/vos/vosapp.cc	2007-04-13 05:56:47 +0000
@@ -15,7 +15,9 @@
 #include <list>
 #include <string.h>
 #include <sys/types.h> // fork()
-#include <unistd.h> // fork()
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
 
 using namespace VOS;
 using namespace VUtil;