> > It's up to users to use generator expressions instead of if(WIN32) or > whatever: > > add_library(foo > foo.cpp > $<$<PLATFORM_ID:Windows>:foo_win.cpp> > ) > > This has been possible for years and was designed with IDEs in mind:
Sure, it’s possible, but it’s not very user friendly or declarative (you need to parse and interpret the generator expression). > > http://public.kitware.com/pipermail/cmake-developers/2014-September/023042.html > >> I find that most of the conditionals are just to create the list of >> sources per platform and then the list of dependencies. It’s certainly >> possible to use generator expressions for some cases, but they don’t have >> the prettiest syntax around, and maybe also not access to all the local >> variables that you need to pick the right files. > > You should be able to put any configure-time variable through the generator > expressions $<BOOL> or $<STREQUAL> to make them genex-compatible. Same, it’s not user friendly or a great syntax. I’ve rarely seen any advanced usage in projects in the wild, I think for that very reason. One thing that I dislike in genex is that there is no “else” clause. So you have to duplicate the whole condition and add a $<NOT> around it. Having something close to a ternary operator would be nice. /Florent -- 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
