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Do not assume little endian when detection fail, add more detections

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miloyip 2014-07-14 13:54:15 +08:00
parent 2e0b3de8d6
commit 065e3b1628
1 changed files with 23 additions and 10 deletions
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33
include/rapidjson/rapidjson.h
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@ -55,20 +55,33 @@
/*! GCC provided macro for detecting endianness of the target machine. But other
compilers may not have this. User can define RAPIDJSON_ENDIAN to either
\ref RAPIDJSON_LITTLEENDIAN or \ref RAPIDJSON_BIGENDIAN.
Implemented with reference to
https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html
http://www.boost.org/doc/libs/1_42_0/boost/detail/endian.hpp
*/
#ifndef RAPIDJSON_ENDIAN
#ifdef __BYTE_ORDER__
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define RAPIDJSON_ENDIAN RAPIDJSON_LITTLEENDIAN
#else
#define RAPIDJSON_ENDIAN RAPIDJSON_BIGENDIAN
#endif // __BYTE_ORDER__
#else
#define RAPIDJSON_ENDIAN RAPIDJSON_LITTLEENDIAN // Assumes little endian otherwise.
#endif
# ifdef __BYTE_ORDER__
# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
# define RAPIDJSON_ENDIAN RAPIDJSON_LITTLEENDIAN
# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
# define RAPIDJSON_ENDIAN RAPIDJSON_BIGENDIAN
# else
# error Unknown machine endianess detected. User needs to define RAPIDJSON_ENDIAN.
# endif // __BYTE_ORDER__
# elif defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN)
# define RAPIDJSON_ENDIAN RAPIDJSON_LITTLEENDIAN
# elif defined(_BIG_ENDIAN) && !defined(_LITTLE_ENDIAN)
# define RAPIDJSON_ENDIAN RAPIDJSON_BIGENDIAN
# elif defined(__sparc) || defined(__sparc__) || defined(_POWER) || defined(__powerpc__) || defined(__ppc__) || defined(__hpux) || defined(__hppa) || defined(_MIPSEB) || defined(_POWER) || defined(__s390__)
# define RAPIDJSON_ENDIAN RAPIDJSON_BIGENDIAN
# elif defined(__i386__) || defined(__alpha__) || defined(__ia64) || defined(__ia64__) || defined(_M_IX86) || defined(_M_IA64) || defined(_M_ALPHA) || defined(__amd64) || defined(__amd64__) || defined(_M_AMD64) || defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || defined(__bfin__)
# define RAPIDJSON_ENDIAN RAPIDJSON_LITTLEENDIAN
# else
# error Unknown machine endianess detected. User needs to define RAPIDJSON_ENDIAN.
# endif
#endif // RAPIDJSON_ENDIAN
///////////////////////////////////////////////////////////////////////////////
// RAPIDJSON_ALIGNSIZE