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Improved little endian byte order detection

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Including <sys/param.h> on Mac/iOS doesn't define __BYTE_ORDER so
PROTOBUF_LITTLE_ENDIAN was never being defined. This commit adds a check
for the __LITTLE_ENDIAN__ macro which is defined by clang and Apple gcc on
little endian architectures.
This commit is contained in:
Kal Conley 2014-12-16 02:30:45 +01:00
parent 59692c3fc0
commit c3e928021f
1 changed files with 2 additions and 1 deletions
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3
src/google/protobuf/io/coded_stream.h
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@ -123,7 +123,8 @@
#endif
#else
#include <sys/param.h> // __BYTE_ORDER
#if defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN && \
#if ((defined(__LITTLE_ENDIAN__) && !defined(__BIG_ENDIAN__)) || \
(defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN)) && \
!defined(PROTOBUF_DISABLE_LITTLE_ENDIAN_OPT_FOR_TEST)
#define PROTOBUF_LITTLE_ENDIAN 1
#endif