on Mon Nov 21 2016, Brad King <brad.king-AT-kitware.com> wrote: > On 11/21/2016 11:06 AM, Dave Abrahams wrote: >> the documentation for JOB_POOLS is sparse > > Yes, it is bare-bones reference documentation for someone that already > knows how Ninja job pools work.
I know perfectly well how Ninja job pools work. The docs in CMake are inadequate for understanding how CMake interacts with them. > A sufficiently motivated contributor could add more to the > `Help/generator/Ninja.rst` document in a new "Job Pools" section. I do appreciate the hint, Brad, but I'm currently unable to make contributions to arbitrary open-source projects. >> I understand the principle at work, but it's really unclear >> how JOB_POOL_LINK and JOB_POOL_COMPILE are supposed to work when set >> per-target. > > They assign link rules and compile rules for that target to the > named pool. Each pool can have a different size assigned in the > global JOB_POOLS property. Different targets could be in different > pools, though typically the global settings are sufficient. Ah. >> I presume means compilation of languages that CMake knows about? > > Yes. It is for the compilation and linking commands that CMake > generates. > >> what about custom targets? > > We currently have no interface to assign custom commands or > custom targets to any pool, simply because no one implemented > such support. It would have to be a new optional argument to > the add_custom_command and add_custom_target commands. Wow, that's too bad. It gets kinda awkward when my Swift build, which uses distcc over 100 cpus for C++ compilation, tries to do 100 parallel swift compilations (not supported by distcc) on my poor local 4-core machine. I may have to resort to postprocessing the generated Ninja files if I can't modify CMake. -- -Dave -- 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
