Add the following line in sgp4's root CMakeLists.txt
target_include_directories(sgp4 PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/libsgp4)Export CXX_INSTALL_DIR env
export CXX_INSTALL_DIR=$HOME/.local
export PATH="$CXX_INSTALL_DIR/bin:$PATH"Build
cmake -S . -B build
cmake --build "build" -j2Run
./build/src/satpos