Re: Using a static library in a C extension for Python

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Date	Thu, 23 Jan 2014 13:33:16 +1100
Subject	Re: Using a static library in a C extension for Python
From	Chris Angelico <rosuav@gmail.com>
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On Thu, Jan 23, 2014 at 10:00 AM, Christian Gollwitzer <auriocus@gmx.de> wrote:
> There might be another issue with the license of the library. Cairo is both
> LGPL and MPL. For LGPL, only dynamic linking is without doubt, for MPL it
> seems to be accepted to link statically. It all depends on whether you plan
> to pass on the binary to another person.
> To circumvent this problem, it might be feasable to just install libcairo
> along with you extension.
>
> Then, the exact same version of python must be used on both computers. Since
> the extension loading mechanism completely relies on the OS dynamic linker,
> it is not possible to load an extension into a different version of python
> than it was built for.

If you can tie in with your OS's package manager, that would solve all
of these problems. You get the OS-supplied Pythom and the OS-supplied
libcairo; grabbing libcairo-dev (or, on my Debian system,
libcairo2-dev to go with libcairo2) gets you what you need to build
your extension; you then might even package your extension the same
way, and then simply declare dependencies. Can save a HUGE amount of
trouble.

ChrisA

Thread

Using a static library in a C extension for Python lgabiot <lgabiot@hotmail.com> - 2014-01-22 12:01 +0100
  Re: Using a static library in a C extension for Python 88888 Dihedral <dihedral88888@gmail.com> - 2014-01-22 09:31 -0800
    Re: Using a static library in a C extension for Python lgabiot <lgabiot@hotmail.com> - 2014-01-22 20:22 +0100
      Re: Using a static library in a C extension for Python Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-01-23 11:09 +1300
        Re: Using a static library in a C extension for Python lgabiot <lgabiot@hotmail.com> - 2014-01-23 03:12 +0100
      Re: Using a static library in a C extension for Python 88888 Dihedral <dihedral88888@gmail.com> - 2014-01-23 04:21 -0800
  Re: Using a static library in a C extension for Python Christian Gollwitzer <auriocus@gmx.de> - 2014-01-23 00:00 +0100
    Re: Using a static library in a C extension for Python lgabiot <lgabiot@hotmail.com> - 2014-01-23 03:17 +0100
    Re: Using a static library in a C extension for Python Chris Angelico <rosuav@gmail.com> - 2014-01-23 13:33 +1100
      Re: Using a static library in a C extension for Python lgabiot <lgabiot@hotmail.com> - 2014-01-23 08:41 +0100
      Re: Using a static library in a C extension for Python lgabiot <laurent.gabiot@gmail.com> - 2014-01-23 08:41 +0100

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