On Tue, Aug 29, 2017 at 12:12 PM, Rolf Eike Beer <e...@sf-mail.de> wrote: > Am Dienstag, 29. August 2017, 11:21:42 schrieb Robert Dailey: >> Ok I debugged find_path() code in CMake and I determined the problem. >> First, let me explain what I'm doing a little more... >> >> I build third party libraries on demand during configure step in >> CMake. I do so via execute_process() to invoke another CMake instance, >> that builds and installs a library. This is similar to how >> ExternalProject_Add() works, but forces it to happen at configure time >> so I can use find_package() afterwards to find the library I just >> built. > > The trick with ExternalProject_Add is to also build your project with it, and > not with add_subdirectory, i.e. the CMakeLists.txt that drives the build needs > to be one level above your actual project. This way all things are done in > order, so the dependencies are build before your main project.
That's not going to work since for multi-configuration generators you want to be able to edit and build your code through the IDE, not via command line. Regarding find modules: it seems simpler at this point to just redo the install logic of upstream libraries using configuration packages instead, that way I can have finer control over how packages are found. Plus it's good for upstream repositories to be able to contribute this back. Thanks to everyone for their feedback. I have a much better understanding of this now, although I still strongly feel this is crazy complex. But nothing we can do about that I guess... it's just the nature of things. -- 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-developers
