Kefu Chai beb1a62492 cmake/modules/BuildRocksDB.cmake: inherit parent's CMAKE_CXX_FLAGS ... CMake allows us to customize `CMAKE_CXX_FLAGS` by setting CXXFLAGS environmental variable. and Debian's debhelper also sets CXXFLAGS when it builds cmake projects for customizing the building flags. but we fail to populate this setting down when building external projects. this is important when it comes to the projects which is critical to the performance. RocksDB is one of them. in this change, we pass the `CMAKE_CXX_FLAGS` down in `BuildRocksDB.cmake` so that its `CMAKE_CXX_FLAGS` contains the same set of `CMAKE_CXX_FLAGS` used by its parent project. this should help with the performance in the bluestore, where RocksDB is used. Signed-off-by: Kefu Chai <tchaikov@gmail.com>		2023-12-15 19:11:54 +08:00
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modules	cmake/modules/BuildRocksDB.cmake: inherit parent's CMAKE_CXX_FLAGS	2023-12-15 19:11:54 +08:00