Hello, I have an external project glfw that I added to my project like this:
========== include(ExternalProject) ExternalProject_Add(glfw GIT_REPOSITORY "https://github.com/glfw/glfw.git"; GIT_TAG "master" SOURCE_DIR "${CMAKE_SOURCE_DIR}/dep/glfw" CMAKE_ARGS -DGLFW_BUILD_DOCS=OFF -DGLFW_BUILD_TESTS=OFF -DGLFW_BUILD_EXAMPLES=OFF -DCMAKE_INSTALL_PREFIX=${CMAKE_SOURCE_DIR}/install/glfw/ -DCMAKE_DEBUG_POSTFIX=_d TEST_COMMAND "" ) set(GLFW_INCLUDE_DIR "${CMAKE_SOURCE_DIR}/install/glfw/include/") set(GLFW_LIBRARY_DIR "${CMAKE_SOURCE_DIR}/install/glfw/lib/") ========== Then I include it in my project like so: ========== find_library(GLFW_LIB_D glfw3_d ${GLFW_LIBRARY_DIR}) find_library(GLFW_LIB glfw3 ${GLFW_LIBRARY_DIR}) include_directories(${GLFW_INCLUDE_DIR}) add_executable(vk_test src/vulkan_test.cpp ) target_link_libraries(vk_test debug ${GLFW_LIB_D} optimized ${GLFW_LIB}) add_dependencies(vk_test glfw) ========== As you can see, I depend on the libraries compiled by the external project glfw. Unfortunately, when I first configure the project, CMake complains that it cannot find the libraries specified by ${GLFW_LIB_D} and ${GLFW_LIB} variables. Of course, this is because CMake did not begin cloning, configuring and building the glfw project. That only happens AFTER my project has been configured and starts building. This becomes a chicken and the egg problem. Currently, my solution is to add dummy .lib files so that I can at least configure and generate my project. My question is, am I approaching this problem in the wrong way? If yes, what is the correct way to add a dependency to an external project and have it clone/configure/build BEFORE the "find_library" call?
-- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake
