From: Sebastian Andrzej Siewior Date: Wed, 11 Jun 2025 22:14:38 +0000 (+0200) Subject: bswap.h: add support for __BYTE_ORDER__ X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=228273bd523d535b93f694497aca70db6bb7513c;p=thirdparty%2Fgit.git bswap.h: add support for __BYTE_ORDER__ The __BYTE_ORDER__ define is provided by gcc (since ~v4.6), clang (since ~v3.2) and icc (since ~16.0.3). It is not provided by msvc as of v19.43 / 17.13.6, which will be dealt with in later steps in this series. 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 Signed-off-by: Junio C Hamano --- diff --git a/compat/bswap.h b/compat/bswap.h index b34054f2bd..0a457542dd 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