On Wed, Dec 9, 2015 at 5:32 AM, Igor Sobinov <sl...@mail.ru> wrote: > Hello, > > I compiled cmake based project with -jN option, but failed: I got the > following error: > > make[4]: warning: jobserver unavailable: using -j1. Add `+' to parent make > rule. >
That is actually only a warning.... ‘warning: jobserver unavailable: using -j1. Add `+' to parent make rule.’ In order for make processes to communicate, the parent will pass information to the child. Since this could result in problems if the child process isn’t actually a make, the parent will only do this if it thinks the child is a make. The parent uses the normal algorithms to determine this (see How the MAKE Variable Works). If the makefile is constructed such that the parent doesn’t know the child is a make process, then the child will receive only part of the information necessary. In this case, the child will generate this warning message and proceed with its build in a sequential manner. Probably you're building on windows; which doesn't do 'fork' so it's not possible to parallel make, and you'll have to suffer with single-target makes. It's slower but doesn't cause 'issues'. Maybe grab Visual Studio community edition target that instead which is able to parallel make... I think Ninja handles parallel makes also(?). > How to make cmake to compile with multiple targets? > > Bye, Igor > > -- > > 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 -- 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
