rewrote Endianness selection

Author: cr-marcstevens

lib/sha1.c

@@ -35,15 +35,32 @@
 #ifdefSHA1DC_BIGENDIAN
 #undef SHA1DC_BIGENDIAN
 #endif
-#if (!defined SHA1DC_FORCE_LITTLEENDIAN) && \
- ((defined(__BYTE_ORDER) && (__BYTE_ORDER==__BIG_ENDIAN)) || \
- (defined(__BYTE_ORDER__) && (__BYTE_ORDER__==__BIG_ENDIAN__)) || \
- defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN__) || defined(__ARMEB__) || defined(__THUMBEB__) || defined(__AARCH64EB__) || \
- defined(_MIPSEB) || defined(__MIPSEB) || defined(__MIPSEB__) || defined(SHA1DC_FORCE_BIGENDIAN))
 
+#if (defined(_BYTE_ORDER) || defined(__BYTE_ORDER) || defined(__BYTE_ORDER__))
+
+#if ((defined(_BYTE_ORDER) && (_BYTE_ORDER==_BIG_ENDIAN)) || \
+ (defined(__BYTE_ORDER) && (__BYTE_ORDER==__BIG_ENDIAN)) || \
+ (defined(__BYTE_ORDER__) && (__BYTE_ORDER__==__BIG_ENDIAN__)) )
 #defineSHA1DC_BIGENDIAN
+#endif
+
+#else
+
+#if (defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN) || defined(__BIG_ENDIAN__) || \
+ defined(__ARMEB__) || defined(__THUMBEB__) || defined(__AARCH64EB__) || \
+ defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB))
+#defineSHA1DC_BIGENDIAN
+#endif
 
-#endif/*ENDIANNESS SELECTION*/
+#endif
+
+#if (defined(SHA1DC_FORCE_LITTLEENDIAN) && defined(SHA1DC_BIGENDIAN))
+#undef SHA1DC_BIGENDIAN
+#endif
+#if (defined(SHA1DC_FORCE_BIGENDIAN) && !defined(SHA1DC_BIGENDIAN))
+#defineSHA1DC_BIGENDIAN
+#endif
+/*ENDIANNESS SELECTION*/
 
 #if (defined SHA1DC_FORCE_UNALIGNED_ACCESS|| \
  defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__x86_64) || \