On 28 October 2014 09:34, Jakub Zakrzewski <[email protected]> wrote:
> > I have a situation where I need to prefer a custom-build of a library > over any system-installed versions. I understand that the paths in the > HINTS variable will be searched before the > system ones, but the > documentation discourages its use with hard-coded paths. > > > If I do hard-code a HINTed path, what problems would that cause? > > It's "just" a best practise. Someone smarter has come up with the right > order and it looks sensible to me. I'd suggest, that you do your search in > two steps: > > > > find_path( MY_FILE > > NAMES "my_file.txt" > > PATHS > > "/the/file/is/here" > > "/or/maybe/here" > > NO_DEFAULT_PATH > > NO_CMAKE_ENVIRONMENT_PATH > > NO_CMAKE_PATH > > NO_SYSTEM_ENVIRONMENT_PATH > > NO_CMAKE_SYSTEM_PATH > > NO_CMAKE_FIND_ROOT_PATH > > ) > > > > find_path( MY_FILE > > NAMES "my_file.txt" > > ) > > > > If the file is found wit the first call, then CMake won't try to find it > again. Otherwise it'll proceed with standard search (second call). > > > > -- > > Gruesse, > > Jakub > > > > > I would very much like to know the actual technical reason behind the practice. On the surface, it appears there is no reason for having two searches if HINTS works in the way that it says. This posting http://mail.kde.org/pipermail/kde-buildsystem/2008-June/004762.html appears to indicate that HINTS was created for exactly the purpose I need: HINTS ${SOMEPLACE_I_WANT_TO_LOOK_FIRST} George
-- 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
