diff -rupN mksh491/mksh/sh.h mksh491_fix2a/mksh/sh.h
--- mksh491/mksh/sh.h	2014-01-12 05:10:07.000000000 +1100
+++ mksh491_fix2a/mksh/sh.h	2014-12-05 11:12:08.587647700 +1100
@@ -401,9 +401,9 @@ extern int __cdecl setegid(gid_t);
 #endif
 #endif
 
-#ifndef O_BINARY
+//#ifndef O_BINARY
 #define O_BINARY	0
-#endif
+//#endif
 
 #ifdef MKSH__NO_SYMLINK
 #undef S_ISLNK