It looks that precompiled headers should help here. 2011/1/17 David Cole <david.c...@kitware.com>: > See this command: > http://cmake.org/cmake/help/cmake-2-8-docs.html#command:include_regular_expression > > If you can match many of the "header files that rarely, if ever, change" > with a regular expression based on directory and file name patterns, then > you can reduce the number of entries in the generated makefiles > significantly. > > > HTH, > David > > > On Sat, Jan 15, 2011 at 7:57 AM, Dieter Oberkofler > <doberkofler.li...@gmail.com> wrote: >> >> I'm using CMake 2.8.3 using makefiles for the OSX and Windows platform. >> >> I very much like CMake but unfortunately the build performance >> consistently >> causes some problems. >> >> And the main performance problem is the absolutely correct but painfully >> slow dependency checking. >> In a large (Qt/C++) project a single source file has over 1500 include >> dependencies summing up to a "depend.make" file with several million >> lines. >> Almost all (typically 99%) of the include dependencies are not needed in >> real life because they come from Qt or other static frameworks but >> dramatically slow down the build process. >> >> I do know that CMake offers the /fast option but this removes all >> dependencies and although it is 3-5 times faster, manually "optimizing" >> the >> content of "depend.make" makes the build up to 20 times faster. >> Why is the /fast option not (at least) as fast as a manually "optimized" >> "depend.make"? >> >> Is there a way to: >> - customize what includes should be parsed? >> - exclude dependency trees? >> - limit the recursion level? >> >> or any other option to solve this problem? >> >> Thank you! >> >> >> _______________________________________________ >> 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 > > > _______________________________________________ > 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 >
-- BG, Alexey _______________________________________________ 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