[Lazarus] Lazarus GTK project dependencies
nc-gaertnma at netcologne.de
Thu Apr 14 09:56:47 CEST 2011
On Thu, 14 Apr 2011 09:47:57 +0200 (CEST)
michael.vancanneyt at wisa.be wrote:
> On Thu, 14 Apr 2011, zeljko wrote:
> > On Thursday 14 of April 2011 09:33:03 Michael Van Canneyt wrote:
> >> Hi,
> >> due to some other topic discussed on the mailing list, I thought I'd check
> >> the dependencies of a simple lazarus project. The result is shown below.
> >> I did this similar exercise a year or two ago, and the result has more than
> >> tripled !
> >> I wonder, why all these dependencies ??
> >> I mean, libselinux, libcairo, libexpat, libdirectfb, libfusion, libdirect
> >> (to name but a few), why do I need those ?
> > You don't but gtk does (or cairo or some xlib).
> Hm. I did a quick check:
> fsb: >ldd /usr/lib/libgdk-x11-2.0.so.0 | wc -l
> fsb: >ldd /usr/lib/libqt-mt.so.3.3.8 | wc -l
> So Qt needs 31 libs, GTK uses 44. Many of the extra ones related to direct framebuffer
> access, which is total nonsense in a X environment.
The gnome projects likes to split libs in smaller modules.
The number of libs is not that important. The size is more important:
A gtk2 program:
ldd testgtk2 | cut -d' ' -f 3 | grep lib | xargs cat | wc -c
A qt program:
ldd testqt | cut -d' ' -f 3 | grep lib | xargs cat | wc -c
So Qt uses about 50MB, GTK uses 15MB.
> Well, this reminds me why I use KDE and not Gnome.
> How complete/stable is the Qt version of the LCL, and what version of Qt is needed ?
It is quite stable. It works well under KDE, not so well under Gnome.
But this is not the fault of the LCL qt interface, but of QT.
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