-# if defined(__i386) || defined(__i386__) || defined(_M_IX86) || defined(__INTEL__)
-# define sha1_block_host_order sha1_block_asm_host_order
-# define DONT_IMPLEMENT_BLOCK_HOST_ORDER
-# define sha1_block_data_order sha1_block_asm_data_order
-# define DONT_IMPLEMENT_BLOCK_DATA_ORDER
-# define HASH_BLOCK_DATA_ORDER_ALIGNED sha1_block_asm_data_order
-# elif defined(__ia64) || defined(__ia64__) || defined(_M_IA64)
-# define sha1_block_host_order sha1_block_asm_host_order
-# define DONT_IMPLEMENT_BLOCK_HOST_ORDER
-# define sha1_block_data_order sha1_block_asm_data_order
-# define DONT_IMPLEMENT_BLOCK_DATA_ORDER
+# if !defined(B_ENDIAN)
+# if defined(__i386) || defined(__i386__) || defined(_M_IX86) || defined(__INTEL__)
+# define sha1_block_host_order sha1_block_asm_host_order
+# define DONT_IMPLEMENT_BLOCK_HOST_ORDER
+# define sha1_block_data_order sha1_block_asm_data_order
+# define DONT_IMPLEMENT_BLOCK_DATA_ORDER
+# define HASH_BLOCK_DATA_ORDER_ALIGNED sha1_block_asm_data_order
+# elif defined(__ia64) || defined(__ia64__) || defined(_M_IA64)
+# define sha1_block_host_order sha1_block_asm_host_order
+# define DONT_IMPLEMENT_BLOCK_HOST_ORDER
+# define sha1_block_data_order sha1_block_asm_data_order
+# define DONT_IMPLEMENT_BLOCK_DATA_ORDER
+# endif