Change Details

``` cmake .. -GNinja ninja rm -Rf * cmake .. -GNinja -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ ninja ```

``` cmake .. -GNinja -DCMAKE_CXX_FLAGS=-Werror -DCMAKE_C_FLAGS=-Werror ninja rm -Rf * cmake .. -GNinja -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_CXX_FLAGS=-Werror -DCMAKE_C_FLAGS=-Werror ninja ```

``` cmake .. -GNinja -DCMAKE_CXX_FLAGS=-Werror -DCMAKE_C_FLAGS=-Werror ninja rm -Rf * cmake .. -GNinja -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_CXX_FLAGS=-Werror -DCMAKE_C_FLAGS=-Werror ninja ```