The __BYTE_ORDER__ define is provided by gcc (since ~v4.6), clang (since ~v3.2) and icc (since ~16.0.3). The __BYTE_ORDER and BYTE_ORDER macros are libc specific and are not available on all supported platforms such as mingw. Add support for the __BYTE_ORDER__ macro as a fallback. Signed-off-by: Sebastian Andrzej Siewior <sebastian@xxxxxxxxxxxxx> --- compat/bswap.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/compat/bswap.h b/compat/bswap.h index b34054f2bd728..0a457542dd76a 100644 --- a/compat/bswap.h +++ b/compat/bswap.h @@ -116,6 +116,12 @@ static inline uint64_t git_bswap64(uint64_t x) # define GIT_LITTLE_ENDIAN LITTLE_ENDIAN # define GIT_BIG_ENDIAN BIG_ENDIAN +#elif defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && defined(__ORDER_BIG_ENDIAN__) + +# define GIT_BYTE_ORDER __BYTE_ORDER__ +# define GIT_LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__ +# define GIT_BIG_ENDIAN __ORDER_BIG_ENDIAN__ + #else # define GIT_BIG_ENDIAN 4321 -- 2.50.0
