On 07/25/2011 12:00 PM, Daniel Pfeifer wrote: > what is your opinion on the $<> syntax I originally proposed? > This would not require creating virtual targets for header only libraries.
The implementation is just doing delayed variable evaluation and is not a true generator expression in the same sense as is used by add_test and add_custom_command. The latter support only generator-defined specific expressions with very specific syntax that can be validated. The FinalPass of commands is an ancient implementation detail which exists only in a few commands for historical reasons and should not be used in new commands. The proposed solution is to use delayed evaluation to work around lack of dependency-sorted ordering. The topological sort already used by the Boost CMake solves this problem in a better way. The ITK project already does CMake-time module dependency detection and sorting using a similar approach. It correctly handles the generation of include directories for each module. It also handles header-only modules. Unfortunately the implementation is embedded in ITK's CMake code and is not (yet) easily generalizable. -Brad _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
