cmake ARM_HWCAP_HAS_CRC32 examples

HDFGroup/hdf5 config/cmake/ZLIBNG/CMakeLists.txt :696 

check_c_source_compiles(
                        "#include <sys/auxv.h>
                        #include <asm/hwcap.h>
                        int main() {
                            return (getauxval(AT_HWCAP2) & HWCAP2_CRC32);
                        }"
                        ARM_HWCAP_HAS_CRC32
                    )

InsightSoftwareConsortium/ITK Modules/ThirdParty/HDF5/src/itkhdf5/config/cmake/ZLIBNG/CMakeLists.txt :613 

check_c_source_compiles(
                        "#include <sys/auxv.h>
                        #include <asm/hwcap.h>
                        int main() {
                            return (getauxval(AT_HWCAP2) & HWCAP2_CRC32);
                        }"
                        ARM_HWCAP_HAS_CRC32
                    )

InsightSoftwareConsortium/ITK Modules/ThirdParty/ZLIB/src/itkzlib-ng/CMakeLists.txt :697 

check_c_source_compiles(
                        "#include <sys/auxv.h>
                        #include <asm/hwcap.h>
                        int main() {
                            return (getauxval(AT_HWCAP2) & HWCAP2_CRC32);
                        }"
                        ARM_HWCAP_HAS_CRC32
                    )