Comments on: Parallel builds with qmake http://delta.affinix.com/2007/06/09/parallel-builds-with-qmake/ Building an XMPP/Jabber Platform Wed, 16 Nov 2011 14:43:45 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Project Gus» Blog Archive » Developing Qt apps for Windows, using Linux & wine http://delta.affinix.com/2007/06/09/parallel-builds-with-qmake/#comment-36245 Project Gus» Blog Archive » Developing Qt apps for Windows, using Linux & wine Sun, 04 Sep 2011 07:55:52 +0000 http://delta.affinix.com/2007/06/09/parallel-builds-with-qmake/#comment-36245 [...] Parallel building makes a massive improvement though, with modern multicore CPUs. If you're running with Qt Creator, you can force your whole project to build in parallel by going to Projects -> Build Settings -> expanding the 'Make:' build step and setting Make arguments to -j3 MAKE="mingw32-make -j3" (where 3 is your number of parallel steps.) YMMV on that, though. You may need to better specify dependencies, as described here. [...] [...] Parallel building makes a massive improvement though, with modern multicore CPUs. If you're running with Qt Creator, you can force your whole project to build in parallel by going to Projects -> Build Settings -> expanding the 'Make:' build step and setting Make arguments to -j3 MAKE="mingw32-make -j3" (where 3 is your number of parallel steps.) YMMV on that, though. You may need to better specify dependencies, as described here. [...]

]]> By: Tyler Mace http://delta.affinix.com/2007/06/09/parallel-builds-with-qmake/#comment-30592 Tyler Mace Fri, 20 Jun 2008 14:06:51 +0000 http://delta.affinix.com/2007/06/09/parallel-builds-with-qmake/#comment-30592 At least in QT4, when you change the name of the SUBDIRS value, you change the name of the directory that it uses to "cd ___" For example, my Makefile would have said in it "cd sub_library" and "qmake sub_library.pro" I believe in my version of qmake, 2.01a, the ".subdir" direction didn't work. My solution, when using your example, was to leave SUBDIRS alone and just call out the depends... SUBDIRS += library unittest examples unittest.depends = library examples.depends = library At least in QT4, when you change the name of the SUBDIRS value, you change the name of the directory that it uses to “cd ___” For example, my Makefile would have said in it “cd sub_library” and “qmake sub_library.pro”

I believe in my version of qmake, 2.01a, the “.subdir” direction didn’t work.

My solution, when using your example, was to leave SUBDIRS alone and just call out the depends…

SUBDIRS += library unittest examples

unittest.depends = library
examples.depends = library

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