+
+/* FreeBSD, Watcom and DMars require this, CW doesn't have nor need it. */
+/* Others also don't seem to need it. If you have an error related to */
+/* (not) including <sys/types.h> please report details to */
+/* wx-dev@lists.wxwindows.org */
+#if defined(__UNIX__) || defined(__WATCOMC__) || defined(__DIGITALMARS__)
+# include <sys/types.h>
+#endif
+