Fix building Python3 on linux

[ardovm]

These commits should allow to compile Python 3.11.15 on Linux.

However, after applying them, Python macros do not seem to work. But at least, we can get to compile trunk again.

[ardovm]

Requesting @jimjag's review in particular for the name of the sysconfigdata file in b0bc83f.

[DamjanJovanovic]

Why don't we use the system Python on Linux? Do macros work with it?

[ardovm]

I suppose we are not using system-provided Python (and also other additional dependencies) due to the possible age difference between the distro of the build system and the distro of the actual systems on which AOO will run.
I'll see if I can build with system Python.

[leginee]

main\pyuno\source\module\pyuno_dlopenwrapper.c
links against
#include <Python.h>

Isnt that an issue?

what we need is a dialog similar or same that lists as with java, so we can point python to a sandbox.
That would be cool and not that difficult i think.

[ardovm]

main\pyuno\source\module\pyuno_dlopenwrapper.c links against #include <Python.h>

Isnt that an issue?

I suppose not. The build system should take care of indicating the proper include file paths: either local to the AOO build tree, or at system level.

[leginee]

I suppose not. The build system should take care of indicating the proper include file paths: either local to the AOO build tree, or at system level.
But we do not build for a specific distro, but in general. And if you build against the distros python, is it compatible to other distros python?

[ardovm]

Why don't we use the system Python on Linux? Do macros work with it?

I just built on openSUSE Leap 16.0, that ships Python 3.13.13. Macros are accessible when using system Python.
Macros are not accessible when using the "bundled" Python 3.11.5.

[ardovm]

I suppose not. The build system should take care of indicating the proper include file paths: either local to the AOO build tree, or at system level.

But we do not build for a specific distro, but in general. And if you build against the distros python, is it compatible to other distros python?

I am afraid that using system level Python would make the AOO binary incompatible, or would raise compatibility issues, with other distributions having other system Python versions.