#18437: Switch from PolyBoRi to BRiAl
-------------------------------------+-------------------------------------
Reporter: ohanar | Owner:
Type: task | Status: needs_review
Priority: major | Milestone: sage-6.8
Component: packages: | Resolution:
standard | Merged in:
Keywords: | Reviewers:
Authors: R. Andrew Ohana | Work issues:
Report Upstream: N/A | Commit:
Branch: u/ohanar/brial | fdff73302359b87ab524b5a7f3722e36a550ca7f
Dependencies: | Stopgaps:
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Comment (by fbissey):
Do I understand well that `libgd` is looked for if `libpng` is not there?
It is all a bit strange. If `m4ri` doesn't have support for `png` I guess
`have_libpng` will be empty and then `libgd` will be checked. The line
{{{
AC_DEFINE([PBORI_HAVE_GD],[],[has gd png support])
}}}
is a bit misleading as if you arrive there, you have `libgd` support which
may or may not have `png` included in it.
Also why shouldn't the compilation abort if `m4ri_png=yes` but you cannot
find `libpng`? As far as I can tell `m4ri` won't use `libgd` for libpng
unless you abuse the configuration options, so that whole structure looks
very strange.
I guess on closer look I have an issue with the way m4ri/m4rie/polybory
deal with some of their optional dependencies, and that may be something
to look into in the future. For starter if `m4ri` is compiled with `png`
support, the used `libpng` should be included in output of `pkg-config
m4ri --libs`.
--
Ticket URL: <http://trac.sagemath.org/ticket/18437#comment:39>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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