also please post the output of

libpng-config --prefix


On Wed, Nov 20, 2019 at 10:05 PM Dima Pasechnik <dimp...@gmail.com> wrote:
>
> hmm, strange. So it is found somewhere, not clear where. One way to
> see is  to check linking of libgd
>
> otool -L local/lib/libgd.dylib
>
> or perhaps in
>
> logs/pkgs/libgd*
>
> On Wed, Nov 20, 2019 at 9:49 PM Paul Masson <paulmas...@comcast.net> wrote:
> >
> > Here it is
> >
> > On Wednesday, November 20, 2019 at 1:39:19 PM UTC-8, Dima Pasechnik wrote:
> >>
> >> please post config.log
> >> you have a mysterious copy of libpng somewhere...
> >>
> >> On Wed, Nov 20, 2019 at 9:36 PM Paul Masson <paulm...@comcast.net> wrote:
> >> >
> >> > I do not have anaconda installed. Building from the git repository with 
> >> > no package managers.
> >> >
> >> > On Wednesday, November 20, 2019 at 1:31:10 PM UTC-8, Dima Pasechnik 
> >> > wrote:
> >> >>
> >> >> Probably anaconda conflict, do you have pkg-config installed, so that
> >> >>
> >> >> pkg-config --libs libpng
> >> >>
> >> >> outputs a path to anaconda?
> >> >>
> >> >> I guess matplotlib does not use pkg-config, so it can't find libpng in
> >> >> an unusual location.
> >> >>
> >> >> On Wed, Nov 20, 2019 at 7:57 PM Paul Masson <paulm...@comcast.net> 
> >> >> wrote:
> >> >> >
> >> >> > On macOS 10.15.1, after "make distclean" I get
> >> >> >
> >> >> > The following package(s) may have failed to build (not necessarily
> >> >> >
> >> >> > during this run of 'make all-start'):
> >> >> >
> >> >> >
> >> >> > * package: matplotlib-2.2.4.p0
> >> >> >
> >> >> >   log file: 
> >> >> > /Users/Masson/Downloads/GitHub/sage/logs/pkgs/matplotlib-2.2.4.p0.log
> >> >> >
> >> >> >   build directory: 
> >> >> > /Users/Masson/Downloads/GitHub/sage/local/var/tmp/sage/build/matplotlib-2.2.4.p0
> >> >> >
> >> >> >
> >> >> > In the attached log, it says that libpng is not installed. I've never 
> >> >> > seen this error before, but I didn't think I'd have to install 
> >> >> > anything manually that was mandatory for the build. Thoughts?
> >> >> >
> >> >> >
> >> >> > On Sunday, November 17, 2019 at 4:42:15 PM UTC-8, Volker Braun wrote:
> >> >> >>
> >> >> >> As always, you can get the latest beta version from the "develop" 
> >> >> >> git branch. Alternatively, the self-contained source tarball is at 
> >> >> >> http://www.sagemath.org/download-latest.html
> >> >> >>
> >> >> >> This is the first Python 3 beta, so incremental builds probably 
> >> >> >> aren't going to work. Use "make distclean" or the appropriate 
> >> >> >> configure flag to keep using Python 2 (noooo)
> >> >> >>
> >> >> >>
> >> >> >> 232ae1bddc (tag: 9.0.beta6) Updated SageMath version to 9.0.beta6
> >> >> >> 026a216fa4 Trac #28104: Openblas build failure
> >> >> >> 1e7795c1f2 Trac #28726: py3: cysignals fails its test suite
> >> >> >> c53e82c055 Trac #28734: a few miscellanous details
> >> >> >> a55e518077 Trac #28721: Document sage-dist-helpers
> >> >> >> c87212c10b Trac #28715: remove some deprecated stuff in combinat 
> >> >> >> after 23319 and 15597
> >> >> >> 2adaf8bc28 Trac #28686: Demote some optional packages to experimental
> >> >> >> 381ddacd15 Trac #15077: Inconsistency in polynomial .reverse(n)
> >> >> >> af4d15a8e1 Trac #28725: fix lawrence_extension and lawrence_polytope 
> >> >> >> for backend field
> >> >> >> a8e457e711 Trac #28719: remove deprecated function aliases
> >> >> >> e46f2a5383 Trac #28717: some cleanup in __init__ files
> >> >> >> 9101b22829 Trac #28709: Python executable in doctest/control.py
> >> >> >> 6544bf8e40 Trac #28707: More control on the numerical ODE solver for 
> >> >> >> integrated curves and geodesics
> >> >> >> 50034a0ae9 Trac #28652: Rework the constructor of 
> >> >> >> PermutationGroupElement
> >> >> >> edc1360355 Trac #28606: CombinatorialPolyhedron: unbounded -> 
> >> >> >> is_bounded
> >> >> >> 3a35510660 Trac #28605: CombinatorialPolyhedron: replace attributes 
> >> >> >> by methods
> >> >> >> 133435b38d Trac #27302: Cubic Braid Groups
> >> >> >> 8d41eaeed4 Trac #27089: CPLEXBackend.solver_parameter: Handle 
> >> >> >> CPX_PARAMTYPE_LONG
> >> >> >> eb5d0df260 Trac #25183: Bug in the associahedron object
> >> >> >> 94b6adde10 Trac #24108: quadratic_form_from_invariants()
> >> >> >> e9e14ad864 Trac #28730: cvxopt fails its test suite
> >> >> >> a9146cd62b Trac #28714: clarify docstring of 
> >> >> >> plot.colors.float_to_integer
> >> >> >> f94189b015 Trac #28708: 5 cplex doctests failed in cplex_backend.pyx
> >> >> >> 92a0045e31 Trac #28700: Fixing missing optional flag in base_QQ.py
> >> >> >> 6c5f93dfb4 Trac #28689: py3: fix doctests with cbc
> >> >> >> 3dd1d44175 Trac #28660: Make Python 3 the default
> >> >> >> 0a86718461 Trac #28382: Correct types in cplex backend
> >> >> >> 82b36b2ead Trac #27761: DES Block Cipher
> >> >> >> 93db4cc438 (tag: 9.0.beta5) Updated SageMath version to 9.0.beta5
> >> >> >>
> >> >> > --
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