cmake -DCMAKE_C_COMPILER="/usr/bin/gcc" -DCMAKE_CXX_COMPILER="/usr/bin/gcc" -DCMAKE_C_FLAGS="-fPIC" -DCMAKE_CXX_FLAGS="-fPIC" -G 'Unix Makefiles' . make
https://code.visualstudio.com/shortcuts/keyboard-shortcuts-linux.pdf
cmake -DCMAKE_C_COMPILER="/usr/bin/gcc" -DCMAKE_CXX_COMPILER="/usr/bin/gcc" -DCMAKE_C_FLAGS="-fPIC" -DCMAKE_CXX_FLAGS="-fPIC" -G 'Unix Makefiles' . make
https://code.visualstudio.com/shortcuts/keyboard-shortcuts-linux.pdf