bswap.h: define GIT_LITTLE_ENDIAN on msvc as little endian
The Microsoft Visual C++ (MSVC) compiler (as of Visual Studio 2022 version 17.13.6) does not define __BYTE_ORDER__ and its C-library does not define __BYTE_ORDER. The compiler is supported only on arm64 and x86 which are all little endian. Define GIT_BYTE_ORDER on msvc as little endian to avoid further checks. 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
30dea7ddf7a10d11818e754deba8120cef8446ca
1 file changed
+5
-1
compat/bswap.h
+5
-1
@@ -81,6 +81,10 @@ static inline uint64_t git_bswap64(uint64_t x)
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#define bswap32(x) _byteswap_ulong(x)
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#define bswap64(x) _byteswap_uint64(x)
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+#define GIT_LITTLE_ENDIAN 1234
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+#define GIT_BIG_ENDIAN 4321
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+#define GIT_BYTE_ORDER GIT_LITTLE_ENDIAN
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+
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#endif
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#if defined(bswap32)
@@ -122,7 +126,7 @@ static inline uint64_t git_bswap64(uint64_t x)
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# define GIT_LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
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# define GIT_BIG_ENDIAN __ORDER_BIG_ENDIAN__
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-#else
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+#elif !defined(GIT_BYTE_ORDER)
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# define GIT_BIG_ENDIAN 4321
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# define GIT_LITTLE_ENDIAN 1234