[Buildroot] [PATCH] graphs: add option to remove transitive dependencies in dependency graph
Yann E. MORIN
yann.morin.1998 at free.fr
Fri May 9 10:20:29 UTC 2014
Peter, All,
On 2014-05-09 12:00 +0200, Peter Korsgaard spake thusly:
> >>>>> "Yann" == Yann E MORIN <yann.morin.1998 at free.fr> writes:
> > On 2014-05-07 00:44 +0200, Yann E. MORIN spake thusly:
> >> From: "Yann E. MORIN" <yann.morin.1998 at free.fr>
> >>
> >> Currently, all the dependencies of a package are drawn on the dependency
> >> graph, including transitive dependencies (e.g. A->B->C and A->C).
> >>
> >> Very big graphs, with lots of packages with lots of dependencies, the
> >> dependency graph can be very dense, and transitive dependencies are
> >> cluttering the graph.
> >>
> >> In some cases, only getting the "build-order" dependencies is enough (e.g.
> >> to see what impact a package rebuild would have).
> >>
> >> Add a new environment variable to disable drawing transitive dependencies.
>
> > I've marked it as Changes Requested in PAtchwork, since I have a cleaner
> > patch to come soon, with other cleanups in the graph-depends script.
>
> Thanks. Like I mentioned on IRC I do like the looks of the graphs, but
> I'm not really happy with the use of environment variables to control
> it, as it isn't intuitive.
>
> Perhaps we should simply have kconfig options for these things?
As I said on IRC, I doubt this would be usefull, For example:
- for depth: someone might want a 3-level deep graph for some package,
and a 4-level deep graph for another,
- for transitive deps: someone would like the complete dependencies
graphed for some package, and only the 'build-order' deps for some
another.
This means the user would have to go back to the menuconfig between each
graph, and this could not be made automatic (eg. called from within a
script that generates the graphs for the documentation of the project.)
What we could do, however, would be something like:
make BR2_GRAPH_OPTS='--depth 4 --no-transitive' graph-depends
(the existing BR2_GRPAH_DEPS would disapear).
Thoughts?
Regards,
Yann E. MORIN.
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