check_cxx_source_compiles(
"
int main()
{
#if defined(__SSE2__)
    int n   = 0;
    int eax = 0;
    int edx = 0;
    __asm__(
        \"xgetbv     ;\"
        \"vzeroupper  \"
        : \"=a\"(eax), \"=d\"(edx) : \"c\"(n) : );
#else
#    error No SSE support enabled to query AVX support
#endif
}
" OPENEXR_IMF_HAVE_GCC_INLINE_ASM_AVX
)