--- openssl-0.9.6b/crypto/bn/bn.h.orig	Tue Feb 27 17:00:40 2001
+++ openssl-0.9.6b/crypto/bn/bn.h	Sat Sep 29 16:30:04 2001
@@ -90,7 +90,9 @@
  * be on.  Again this in only really a problem on machines
  * using "long long's", are 32bit, and are not using my assembler code. */
 #if defined(MSDOS) || defined(WINDOWS) || defined(WIN32) || defined(linux)
+#ifndef BN_DIV2W
 #define BN_DIV2W
+#endif
 #endif
 
 /* assuming long is 64bit - this is the DEC Alpha