Thanks Matthew,
Understood. Good job I asked before I started hacking around too much!
M
-----Original Message-----
From: Matthew Brett <matthew.br...@gmail.com>
Date: Wednesday, 23 January 2019 at 14:50
To: "Clarkson, Matt" <m.clark...@ucl.ac.uk>
Cc: "wheel-builders@python.org" <wheel-builders@python.org>
Subject: Re: [Wheel-builders] Problem with finding python library via CMake
Hi,
On Wed, Jan 23, 2019 at 2:41 PM Clarkson, Matt <m.clark...@ucl.ac.uk> wrote:
>
> Hi there,
>
> If someone could help me, I would be eternally grateful.
>
> I'm currently creating:
> https://github.com/MattClarkson/CMakeCatchTemplate
>
> as a template project, from which others can generate their own C++
CMake, Catch, CTest project, and I'm providing support for building
Boost.Python, PyBind11, and hence wheels, via Appveyor, and Travis, via
manylinux.
>
> I'm currently on Issue #45, and branch: 45-pypi, and the Travis log looks
like it's working:
> https://travis-ci.com/MattClarkson/CMakeCatchTemplate/builds/98215507
>
> However, if you look at a Linux build, for example:
> https://travis-ci.com/MattClarkson/CMakeCatchTemplate/jobs/172197399
>
> and line 599, we see that CMake is finding the right python executable,
and the right python include dir, but picking up /usr/lib64/libpython2.4
instead of the required version 3.5.5. This means, when I pip install on
another independent machine, downloading the wheel from pypi, I get a library
not found error. I should say at this point, that I'm actually using the
opencv-python docker image provided here: quay.io/skvark/manylinux, but this is
essentially the same as manylinux, with these additions:
https://github.com/skvark/opencv-python/tree/master/docker, but from a python
perspective, its the same.
>
> So, my question (as I currently know almost nothing about docker):
>
> a) Does the docker image have all python libraries installed? If so,
where are they? Is it worth trying to coax cmake 3.9 to find the right one? At
the moment I do not yet know (and have limited time today), if I can run or log
into the docker container to find the libraries.
>
> b) Or do we just create our own docker image, with a more up to date
version of cmake?
>
> If you have any advice, I'd be grateful, as I'm new to wheel building.
I think CMake is particularly prone to requiring the libpython
library, which is deliberately not part of the Manylinux spec. See
the discussion here:
https://www.python.org/dev/peps/pep-0513/#libpythonx-y-so-1
Cheers,
Matthew
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