Implement Meson build system.

[yegorich]

This PR is my first attempt to convert the build system to meson based on @kaechele's work. One can compile the library but there is a lot of work to do as all dependencies are marked as required and needed to be converted to the auto type.

[yegorich]

c++ wraper is now optional.

[yegorich]

@cminyard is it possible to build gensio without libpam?

setup_user doesn't seem to be protected with HAVE_LIBPAM.

[cminyard]

@cminyard is it possible to build gensio without libpam?

setup_user doesn't seem to be protected with HAVE_LIBPAM.

It doesn't need to be protected in the code, gtlsshd.c won't be compiled if libpam isn't present (on unix). So it is possible to compile without libpam, but gtlsshd.c won't be compiled then.

[cminyard]

I'm guessing one of the hardest things you will run into is the ability to exclude a gensio, compile it into the main library, or create a module for it. On an individual gensio basis. Have you thought about this?

Everything else should be doable, I had most of it working with cmake at one point in time.

[yegorich]

Do you mean this feature? Will have to look at this.

[cminyard]

Do you mean this feature? Will have to look at this.

Yes, that's the feature. I was confused at first, the link in the email I got was something completely different. But the link here is right. Strange.

[yegorich]

My fault. The other link was in the buffer :-) It was an interesting TV series, though you cannot watch it without a subscription now :-(

ModemManager seems to have the similar plugin architecture: https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/blob/main/meson_options.txt?ref_type=heads#L21

[cminyard]

On Wed, May 15, 2024 at 12:07 AM Yegor Yefremov ***@***.***> wrote: My fault. The other link was in the buffer :-) It was an interesting TV series, though you cannot watch it without a subscription now :-(

Ah, that's what happened. And I probably wouldn't understand it even if I could watch it :-)

ModemManager seems to have the similar plugin architecture: https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/blob/main/meson_options.txt?ref_type=heads#L21

Ah, good, you have something to steal from. That's always nice.

…

Message ID: ***@***.***>

[cminyard]

For the record, I started using meson on another project, and it's really an improvement over autotools and make. I'm all for this conversion with what I have learned. I won't have time to work on it in the near future, but if you are willing, I would be happy to take changes for this.

[yegorich]

Great to hear this. I'm also busy now. But I'll try to continue my porting effort. The best way would be to merge a minimally wokring set of meson files and then extend it step-by-step. But I still have basic stuff to implement.

[yegorich]

Fix SYSCONFDIR compiler option handling.

[yegorich]

Set compiler warning level.

[yegorich]

@cminyard I have implemented a concept of all-gensios for a subset of gensios. Let me know if it is woriking as expected. Then, I can complete it for other gensios.

[yegorich]

@cminyard forget about it. I thought too complicated :-) Stay tuned.