Hi,
[An earl=ier version of this mail did not go through, perhaps
because of the embedded images. I have now pulled the images out
on to my blog server]
On Mon, 8 Oct 2007 06:53:05 -0400, Daniel Schepler
<[EMAIL PROTECTED]> said:
> Inspired by today's new upload of dpkg, I'm going to try doing a
> rebuild of the archive using "dpkg-buildpackage -j3" and submit bugs
> as I find them. The bugs will be wishlist for now, and I'll assign
> usertag [EMAIL PROTECTED]:ftbfs-parallel to those bug reports for
> those interested in tracking the issue. -- Daniel Schepler
Hmm. My build system builds packages in stages -- this is
designed to work with multiple binary packages from the same
source as well. However, until now, I had never considered the ordering
of the targets in detail with a view to parallel execution, so thanks
for making me look at this in depth.
In my current packages, the order that a build happens is shown
at [1]; and you can see that the build common target can be executed
before the configure targets are done. This is not good, and lead to
the bug filed against cvs-buildpackage.
The dependency tree can be greatly simplified just by observing
the simple rules that *all* configuration is done before any
of the build targets are started, and that the building is done before
the install targets happen, and the install is done before we start
with any binary package creation targets. You can see the target
dependency graph at [2].
It is kinda scary that my typical ./debian/rules has a minimum of
61 targets, and that is just the base number. But it sure makes for
pretty pictures :)
manoj
In the figures below, filled ovals represent targets in which package
specific work is done in ./debian/rules; the other targets are either
required by policy, or used to do work only once, by using a stamp file
as a guard.
1: http://www.golden-gryphon.com/media/images/oldtargets.png
2: http://www.golden-gryphon.com/media/images/newtargets.png
--
My friend has a baby. I'm writing down all the noises he makes so later
I can ask him what he meant. -- Steven Wright
Manoj Srivastava <[EMAIL PROTECTED]> <http://www.debian.org/~srivasta/>
1024D/BF24424C print 4966 F272 D093 B493 410B 924B 21BA DABB BF24 424C
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