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enc.cc,msvc: add clang_rt.builtins for __builtin_cpu_* #185

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Merged
jzern merged 1 commit into from
Sep 3, 2026
+7 −0
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enc.cc,msvc: add clang_rt.builtins for __builtin_cpu_* #185

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7 changes: 7 additions & 0 deletions src/enc.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -203,6 +203,13 @@ bool SupportsNEON() {
bool SupportsAVX2() {
if (ForceSlowCImplementation) return false;
#if defined(SJPEG_HAVE_AVX2) && (defined(__i386__) || defined(__x86_64__))
#if defined(__clang__) && defined(_MSC_VER)
#if defined(__x86_64__)
#pragma comment(lib, "clang_rt.builtins-x86_64.lib")
#else
#pragma comment(lib, "clang_rt.builtins-i386.lib")
#endif
#endif
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__builtin_cpu_init();
return __builtin_cpu_supports("avx2") != 0;
#else
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