diff options
Diffstat (limited to 'include/compiler.h')
| -rw-r--r-- | include/compiler.h | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/include/compiler.h b/include/compiler.h index 47d8595b..3bdd9ee2 100644 --- a/include/compiler.h +++ b/include/compiler.h @@ -96,11 +96,20 @@ #endif /* - * If we have BYTE_ORDER defined, trust it over what autoconf came up - * with, especially since autoconf obviously can't figure things out - * for a universal compiler. + * If we have BYTE_ORDER defined, or the compiler provides + * __BIG_ENDIAN__ or __LITTLE_ENDIAN__, trust it over what autoconf + * came up with, especially since autoconf obviously can't figure + * things out for a universal compiler. */ -#if defined(BYTE_ORDER) && defined(LITTLE_ENDIAN) && defined(BIG_ENDIAN) +#if defined(__BIG_ENDIAN__) && !defined(__LITTLE_ENDIAN__) +# undef WORDS_LITTLEENDIAN +# undef WORDS_BIGENDIAN +# define WORDS_BIGENDIAN 1 +#elif defined(__LITTLE_ENDIAN__) && !defined(__BIG_ENDIAN__) +# undef WORDS_LITTLEENDIAN +# undef WORDS_BIGENDIAN +# define WORDS_LITTLEENDIAN 1 +#elif defined(BYTE_ORDER) && defined(LITTLE_ENDIAN) && defined(BIG_ENDIAN) # undef WORDS_LITTLEENDIAN # undef WORDS_BIGENDIAN # if BYTE_ORDER == LITTLE_ENDIAN @@ -112,15 +121,15 @@ /* * Define this to 1 for faster performance if this is a littleendian - * platform which can do unaligned memory references. It is safe - * to leave it defined to 0 even if that is true. + * platform *and* it can do arbitrary unaligned memory references. It + * is safe to leave it defined to 0 even if that is true. */ #if defined(__386__) || defined(__i386__) || defined(__x86_64__) \ || defined(_M_IX86) || defined(_M_X64) # define X86_MEMORY 1 -# ifndef WORDS_LITTLEENDIAN -# define WORDS_LITTLEENDIAN 1 -# endif +# undef WORDS_BIGENDIAN +# undef WORDS_LITTLEENDIAN +# define WORDS_LITTLEENDIAN 1 #else # define X86_MEMORY 0 #endif |