I am please to provide:
-------------------------------------------------------------------------------
<root@u2: 388> diff -u os.hpp.dist os.hpp
--- os.hpp.dist Sun May  1 17:08:50 2005
+++ os.hpp      Wed Aug  3 16:44:33 2005
@@ -131,7 +131,8 @@
 
 #endif
 
-#ifdef _UNIX
+/*#ifdef _UNIX */
+#if defined(__unix) || defined(__unix__) || defined(_UNIX)
 
 #define  NM  1024
 
@@ -205,6 +206,12 @@
      #define BIG_ENDIAN
   #endif
 #endif
+
+#if defined(__i386) || defined(i386) || defined(__i386__)
+  #ifndef LITTLE_ENDIAN
+     #define LITTLE_ENDIAN
+  #endif
+#endif
 
 #endif
-----------------------------------------------------------------------------
> From: wiz@NetBSD.org
> 
> Synopsis: archivers/unrar solaris x86 gcc
> 
> Responsible-Changed-From-To: pkg-manager->wiz
> Responsible-Changed-By: wiz@netbsd.org
> Responsible-Changed-When: Wed, 03 Aug 2005 10:48:59 +0000
> Responsible-Changed-Why:
> I'll take this.
> 
> 
> State-Changed-From-To: open->feedback
> State-Changed-By: wiz@netbsd.org
> State-Changed-When: Wed, 03 Aug 2005 10:48:59 +0000
> State-Changed-Why:
> It looks like the correct place to fix this in the unrar sources
> would be os.hpp.
> Or we make use of the pkgsrc/mk/endian.mk file and pass down
> the proper -D option in CPPFLAGS.
> Could you please provide a patch for either of these?
> Thanks.
> 
>