On 30.05.2014 23:59, Adam Strzelecki wrote: > Moreover it takes more to build qt-creator with Qbs (20min) than Qmake+make > (18min). Also it doesn't support precompiled headers, at least not for > qt-creator, where Qmake+make+PCH goes down to 9min.
Strange, I thought qbs improves build times. > >> Neither cmake nor qmake build anything, they just generate makefiles or >> project files. In that respect qmake and cmake are quite alike. Qbs is a >> full-featured build tool: it takes care of generating the DAG *and* >> executing it. It’s like qmake and ninja in one. > > Qbs doing both configure & build isn't really advantage to me. Once Qbs have > similar feature coverage as CMake and (re)builds faster than ninja, or maybe > generates less bloated ninja/Makefile/Xcode projects, supports some caching, > or distributed build and finally has decent documentation, then it may be > considered as new promising alternative. > > Opposite, I take as advantage ninja being little independent build only tool, > because anyone can decide how to generate build files for Ninja. > >> In the long run I think Qt either need Qbs as the default build system, or >> ninja support in qmake. > > Agreed. > >> Ninja makes all the difference when building llvm. On a modern system I can >> get null llvm rebuild times on the order of 100ms with ninja, and under a >> second with a single changed .cpp file - and that’s a big project. The 1 >> second single-file rebuilds on fairly small make-based projects (like >> examples bundled with Qt) are really bad. With cmake+ninja, a single changed >> .cpp rebuild of a small Qt example on OS X takes about 250ms. > > Yes, this was whole point starting this thread. Working on big project with > ninja is awesome if you rebuild and run many times. > > Also I wish to express my thanks to Qt developers for great CMake+ninja > support in Qt Creator, as IMHO Qt Creator is best C++ editor (IDE) around the > globe. Working with such huge codebase like LLVM/Clang is a pleasure in QtC. > > Regards, > _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
