Update CMakeLists and fix build error

[LimingFang]

224

[LimingFang]

-march=native isn't supported on Apple Silicon until llvm@15 if we use clang++.

[LimingFang]

#old CMakeLists.txt
elseif(CMAKE_SYSTEM_NAME MATCHES "Darwin")
  add_definitions(-DOS_MACOSX)
  if(CMAKE_SYSTEM_PROCESSOR MATCHES arm)
    add_definitions(-DIOS_CROSS_COMPILE -DROCKSDB_LITE)
    # no debug info for IOS, that will make our library big
    add_definitions(-DNDEBUG)

If CMAKE_SYSTEM_NAME matches "Darwin", the platforms is either x86_64 OSX or arm64 OSX rather than iOS. So when we cmake on apple-m1, we would get a lite version of RocksDB rather then a non-lite RocksDB. Here is a list of CMAKE_SYSTEM_NAME.

[LimingFang]

@yapple PTAL😬