py: Add further autodetection of endianess in mpconfig.h.
This patch was needed for gcc 4.4.
diff --git a/py/mpconfig.h b/py/mpconfig.h
index 5065e36..2d9288f 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -711,7 +711,16 @@
#elif defined(__BIG_ENDIAN__) || defined(__BIG_ENDIAN) || defined (_BIG_ENDIAN)
#define MP_ENDIANNESS_LITTLE (0)
#else
- #error endianness not defined and cannot detect it
+ #include <endian.h>
+ #if defined(__BYTE_ORDER)
+ #if __BYTE_ORDER == __LITTLE_ENDIAN
+ #define MP_ENDIANNESS_LITTLE (1)
+ #else
+ #define MP_ENDIANNESS_LITTLE (0)
+ #endif
+ #else
+ #error endianness not defined and cannot detect it
+ #endif
#endif
#define MP_ENDIANNESS_BIG (!MP_ENDIANNESS_LITTLE)
#endif