find_package(glfw3 3.4 QUIET) if(NOT glfw3_FOUND) include(FetchContent) set(GLFW_INSTALL OFF CACHE BOOL "" FORCE) set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE) set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE) set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE) FetchContent_Declare(glfw GIT_REPOSITORY https://github.com/glfw/glfw.git GIT_TAG 3.4) FetchContent_MakeAvailable(glfw) #add_library(glfw3 ALIAS glfw) endif()