Meson build

[arteymix]

This PR migrate the build system to Meson.

There's a few blockers:

• [x] pkg-config is not generating the Requires (in progress...)
• [x] add_global_arguments is broken for Vala (fix in progress...)
• [x] CLI arguments to enable the docs and examples
• [x] RPM packaging
• [x] building on 12.04 (might not be possible at all) (way too impossible!)
• [ ] find a replacement for ./waf dist
• [x] --debug with coverage (see https://github.com/mesonbuild/meson/pull/500)
• [ ] support for Genie
• [x] install VAPI and GIR (see https://github.com/mesonbuild/meson/issues/505)
• [x] generate
• [x] feature detection (eg. test dependency version)

Upstream details here: https://github.com/mesonbuild/meson/issues/487

[arteymix]

Since Meson require Python 3.4+, we cannot build on Ubuntu 12.04.

• glib-2.0 pass from 2.32 to 2.40
• libsoup-2.4 pass from 2.38 to 2.44

Ubuntu 12.04 is still supported until late 2017 (details here).

[jpakkane]

Some minor issues:

add_global_arguments(['-Wall',

You don't need this, Meson will add it for you (except when buildtype is plain, but this usually only happens on distro package builds where -Wall comes in from CFLAGS). Depending on your needs you might also want to increase the default warning level instead of adding extra warnings by hand.

The current spec file does not work the way you expect it to. You might want to swipe a working configure stanza from the sample rpmmacro we have.

[arteymix]

@jpakkane actually, I suppress warnings that cannot be addressed in Vala

I did not see the RPM macros, it's always nice to have :+1: and for the flags, I simply copied what I had in the wscript.

Now, I'm wondering how I will be able to build on the Copr. Do you backport fixes?

On the other hand, I think I will abandon the idea of running Meson on 12.04, because it just seem very difficult to overcome the dependencies.

[arteymix]

The CI is kind of stuck at "Waiting for status to be reported", so I'll reopen the ticket..

[codecov-io]

Current coverage is 54.66%

Merging #179 into master will decrease coverage by 6.59%

@@             master    #179   diff @@
=======================================
  Files            27      23     -4   
  Lines          1027     986    -41   
  Methods           0       0          
  Branches          0       0          
=======================================
- Hits            629     539    -90   
- Misses          398     447    +49   
  Partials          0       0          

1. 3 files (not in diff) in src/valum were deleted. more
2. 1 files (not in diff) in src were deleted. more
3. 7 files (not in diff) in src/vsgi were modified. more
   • Misses +63
   • Hits -55
4. 1 files (not in diff) in src were modified. more
   • Misses +9
   • Hits +49

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[arteymix]

I added a custom script for installing bindings and dependency files.

[arteymix]

The 0.32 will introduce helpers to test dependency version and fix feature detection. This should cover the lua example as well.

[arteymix]

From now on, we have to be careful because we are not building on minimal dependencies and there should be some check before releases.

The Docker build still have to be updated.