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). 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@breakpoint.cc> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Sebastian Andrzej Siewior committed
Jul 15, 2025 at 21:12 UTC
f1b85243034a690691d34af0576e6d3cb1a08743
1 file changed
+6
compat/bswap.h
+6
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