cmake_minimum_required(VERSION 3.6) set(lib_name clipper) set(target_name ${lib_name}) project(${lib_name}) add_library(${target_name} STATIC clipper.cpp ) target_include_directories(${target_name} PUBLIC .) set_target_properties(${target_name} PROPERTIES ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib" LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib" FOLDER "External" )