check for __cpuidex in intrin.h #757
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This is what is actually used, rather than __cpuid. Due to what I assume is a bug in mingw-w64, __cpuid is prototyped on ARM64, even though there is no definition, which caused this check to succeed and compilation to later fail due to missing __cpuidex (it would have failed at link time if __cpuid was used instead)
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I have separately reported the most likely erroneous presence of |
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I think mingw-w64/mingw-w64@69846cf would fix the build error on arm64, but I also think it would be more correct to check for |
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This is what is actually used, rather than __cpuid. Due to what I assume is a bug in mingw-w64, __cpuid is prototyped on ARM64, even though there is no definition, which caused this check to succeed and compilation to later fail due to missing __cpuidex (it would have failed at link time if __cpuid was used instead)