On 25 Aug., 15:04, leif <not.rea...@online.de> wrote:
> On 22 Aug., 14:07, Jeroen Demeyer <jdeme...@cage.ugent.be> wrote:
>
> > On 2011-08-22 00:38, MartinX wrote:
>
> > > Graphviz would not install as pkg-config was not reading the
> > > pangocairo.pc in the grphviz configure file in the sage environment so
> > > it was not setting the includes correctly. Cause is a duplication of
> > > SAGE_ROOT definition in sage's local libpng12.pc. This problem with
> > > the libpng.pc file also featured in ticket #11686 on matplotlib.
>
> > With which version of Sage is this?
>
> This is not specific to (or originally caused by) the libpng spkg
> itself, but happens since the "fix exactly once" logic w.r.t. pkg-
> config files is currently broken.
>
> Reinstalling the libpng spkg also fixes the duplicate definition of
> SAGE_ROOT in libpng.pc (which is a symbolic link to libpng12.pc), at
> least until the Sage installation gets moved again.
I've opened a 4.7.2 blocker ticket [1] for this issue, i.e. for
avoiding the creation of duplicate definitions in .pc files.
There's no patch to review yet, but atm trac doesn't work anyway.
-leif
[1] #11760: 'sage-location' shouldn't "initialize" .pc (pkg-config)
files more than
once
http://trac.sagemath.org/sage_trac/ticket/11760
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