cmake_minimum_required(VERSION 2.8.2) project(box2d-download NONE) include(ExternalProject) ExternalProject_Add(box2d GIT_REPOSITORY https://github.com/erincatto/box2d.git GIT_TAG main SOURCE_DIR "${CMAKE_BINARY_DIR}/box2d-src" BINARY_DIR "${CMAKE_BINARY_DIR}/box2d-build" CONFIGURE_COMMAND "" BUILD_COMMAND "" INSTALL_COMMAND "" TEST_COMMAND "" )