-#ifndef DES_DEFAULT_OPTIONS
-/* the following is tweaked from a config script, that is why it is a
- * protected undef/define */
-#ifndef DES_PTR
-#undef DES_PTR
-#endif
-
-/* This helps C compiler generate the correct code for multiple functional
- * units. It reduces register dependancies at the expense of 2 more
- * registers */
-#ifndef DES_RISC1
-#undef DES_RISC1
-#endif
-
-#ifndef DES_RISC2
-#undef DES_RISC2
-#endif
-
-#if defined(DES_RISC1) && defined(DES_RISC2)
-YOU SHOULD NOT HAVE BOTH DES_RISC1 AND DES_RISC2 DEFINED!!!!!
-#endif
-
-/* Unroll the inner loop, this sometimes helps, sometimes hinders.
- * Very mucy CPU dependant */
-#ifndef DES_UNROLL
-#undef DES_UNROLL
-#endif
-
-/* These default values were supplied by
- * Peter Gutman <pgut001@cs.auckland.ac.nz>
- * They are only used if nothing else has been defined */
-#if !defined(DES_PTR) && !defined(DES_RISC1) && !defined(DES_RISC2) && !defined(DES_UNROLL)
-/* Special defines which change the way the code is built depending on the
- CPU and OS. For SGI machines you can use _MIPS_SZLONG (32 or 64) to find
- even newer MIPS CPU's, but at the moment one size fits all for
- optimization options. Older Sparc's work better with only UNROLL, but
- there's no way to tell at compile time what it is you're running on */
-
-#if defined( sun ) /* Newer Sparc's */
-# define DES_PTR
-# define DES_RISC1
-# define DES_UNROLL
-#elif defined( __ultrix ) /* Older MIPS */
-# define DES_PTR
-# define DES_RISC2
-# define DES_UNROLL
-#elif defined( __osf1__ ) /* Alpha */
-# define DES_PTR
-# define DES_RISC2
-#elif defined ( _AIX ) /* RS6000 */
- /* Unknown */
-#elif defined( __hpux ) /* HP-PA */
- /* Unknown */
-#elif defined( __aux ) /* 68K */
- /* Unknown */
-#elif defined( __dgux ) /* 88K (but P6 in latest boxes) */
-# define DES_UNROLL
-#elif defined( __sgi ) /* Newer MIPS */
-# define DES_PTR
-# define DES_RISC2
-# define DES_UNROLL
-#elif defined( i386 ) /* x86 boxes, should be gcc */
-# define DES_PTR
-# define DES_RISC1
-# define DES_UNROLL
-#endif /* Systems-specific speed defines */
-#endif
-
-#endif /* DES_DEFAULT_OPTIONS */