cmake HAVE_POWER8 examples

ceph/ceph cmake/modules/SIMDExt.cmake :108

CHECK_C_COMPILER_FLAG("-mcpu=power8" HAVE_POWER8)

ceph/ceph cmake/modules/SIMDExt.cmake :110

message(STATUS " HAVE_POWER8 yes")

ceph/ceph src/common/CMakeLists.txt :231

elseif(HAVE_POWER8)

bytedance/terarkdb CMakeLists.txt :834

endif(HAVE_POWER8)

SpanDB/SpanDB CMakeLists.txt :751

endif(HAVE_POWER8)

steemit/steem libraries/vendor/rocksdb/CMakeLists.txt :699

endif(HAVE_POWER8)

Tencent/Tendis src/thirdparty/rocksdb-5.13.4/rocksdb/CMakeLists.txt :658

endif(HAVE_POWER8)

Tencent/wwsearch deps/rocksdb/CMakeLists.txt :689

endif(HAVE_POWER8)

soedinglab/hh-suite src/CMakeLists.txt :32

elseif (HAVE_POWER8)