On Fri, 02 Sep 2011 21:22:24 +0100 Michael Meeks <michael.me...@novell.com> wrote:
> Hi there, > > Being generally irritated by the apparent hang when running > make (I know, I know it is all faster in real terms than it used to > be ;-) I was poking at the dependency files in: > > core/workdir/unxlngi6.pro/Dep/LinkTarget/Library > > And - being of an ignorant nature, I was amazed to see them > packed half-full of a great mass of dummy / empty dependency rules > like these: > > /data/opt/libreoffice/core/solver/unxlngi6.pro/inc/tools/string.hxx: > > /data/opt/libreoffice/core/solver/unxlngi6.pro/inc/osl/thread.h: > > .. > > Using the attached perl script to remove these [ and I assume > they are truly redundant ;-] we get some quite interesting shrinkage > (gnumake profiles show most of its time parsing and hashing strings > interestingly): > > core/workdir/unxlngi6.pro/Dep/LinkTarget/Library> du -k -c *.d.orig | > tail > 12748 vbaobj.uno.so.d.orig > 9720 vbaswobj.uno.so.d.orig > 2096 vclcanvas.uno.so.d.orig > 372 writerfilter_uno.uno.so.d.orig > 603924 total > > core/workdir/unxlngi6.pro/Dep/LinkTarget/Library> du -k -c *.d | tail > 6424 vbaobj.uno.so.d > 4904 vbaswobj.uno.so.d > 1060 vclcanvas.uno.so.d > 192 writerfilter_uno.uno.so.d > 324084 total > > ie. around 50% of the byte size is gone. That translates into: > > * tail_build (clean make -sr / secs) > + before: 33.964 33.842 34.902 > + after: 21.858 21.202 21.090 > * sc (clean make -sr / secs) > + before: 5.238 5.729 5.802 > + after: 4.195 4.184 4.195 > > Of course when using cvs gnumake (which has the other > globbing win in it - without which everything is far slower). > > So - my question is: how are those library .d files created / > concatenated - and is there some existing script we could piggy-back > on to get rid of these. > > Or are they there in fact there for some good purpose that I > just failed to spot ? :-) Yes, please read Caolans comments on: https://bugs.freedesktop.org/show_bug.cgi?id=40099 Best, Bjoern -- https://launchpad.net/~bjoern-michaelsen _______________________________________________ LibreOffice mailing list LibreOffice@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/libreoffice
