cmake HAVE_SSE2_INTRIN examples

HDFGroup/hdf5 config/cmake/ZLIBNG/CMakeLists.txt :610 

cmake_dependent_option(FORCE_SSE2 "Always assume CPU is SSE2 capable" OFF "HAVE_SSE2_INTRIN" OFF)

InsightSoftwareConsortium/ITK Modules/ThirdParty/HDF5/src/itkhdf5/config/cmake/ZLIBNG/CMakeLists.txt :529 

cmake_dependent_option(FORCE_SSE2 "Always assume CPU is SSE2 capable" OFF "HAVE_SSE2_INTRIN" OFF)

InsightSoftwareConsortium/ITK Modules/ThirdParty/ZLIB/src/itkzlib-ng/CMakeLists.txt :935 

cmake_dependent_option(FORCE_SSE2 "Always assume CPU is SSE2 capable" OFF "HAVE_SSE2_INTRIN" OFF)

InsightSoftwareConsortium/ITK Modules/ThirdParty/ZLIB/src/itkzlib-ng/cmake/detect-intrinsics.cmake :509 

check_c_source_compiles(
        "#include <immintrin.h>
        __m128i f(__m128i x, __m128i y) { return _mm_sad_epu8(x, y); }
        int main(void) { return 0; }"
        HAVE_SSE2_INTRIN
    )