add cxx_flags for linux
add cxx_flags for linux


Former-commit-id: e7dbe9d54cb00f3691608eec03997143a52778c7
Former-commit-id: a2df3d41808008a8424d7903b6f5f4df06341d01
ArkGame/ArkGameFrame,ArkGame/ArkGameFrame,ArkGame/ArkGameFrame,ArkGame/ArkGameFrame,ArkGame/ArkGameFrame,ArkGame/ArkGameFrame,ArkGame/ArkGameFrame