[PyQt] More recent g++ slows build time immensely

[Phil Thompson]

On Mon, 20 Oct 2008 10:48:00 -0500, "Jim Crowell" <jaclists at mailbolt.com>
wrote:
> Hi all,
> 
> I've been using SIP to generate bindings for Syzygy
> <http://www.isl.uiuc.edu/syzygy.htm>. Since we've been using GNU Make
> for everything, I've been running SIP with "-j 1" to generate a single
> .cpp file, which up til now has worked fine (with MinGW g++ 3.4.2 on
> Windows and whatever g++ comes with Ubuntu 7.10).
> 
> However, I'm trying to upgrade to Ubuntu 8.04, which includes g++ 4.2.3.
> Building the bindings on my Windows machine takes about 35 seconds. On a
> fairly similar ubuntu machine, I gave up after about _half an hour_. On
> a blazing-fast, high-end, chock-full-o-RAM graphics machine it completed
> after 15 minutes or so, I wasn't timing.
> 
> Has anyone else run into this problem?

Yes. Ubuntu also includes gcc-4.1 which is what I use for all development
for exactly that reason.

> Anyway, I'm looking into using sipconfig so I'll end up with lots of
> little files instead of one big one. I'm scanning through the pyqt
> sources to see how one uses it in a more complex case than the minimal
> one in the docs. Can anyone point me toward a simpler example of how to
> do things like add include paths, libraries, flags, and so on to the
> compile and link options?

Phil