Replace Autotools by Meson build system

[markuspg]

This pull request replaces the Autotools build system by Meson. This is mostly done for convenient integration with modern IDEs. I'm not very knowledgeable with Meson (I'm more from the CMake/Qt side of things), but since this project is based on GTK Meson seemed the logical choice for me. Basically I checked a few GNOME projects for their practices and tried to follow along these examples as close as possible.

[markuspg]

The GitHub workflow needs to be adjusted too, but I'm not allowed to push this change (even to my own branch).

Below you find the diff that should do the trick:

--- a/.github/workflows/compile.yml
+++ b/.github/workflows/compile.yml
@@ -16,9 +16,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Install requirements
-        run: sudo apt-get install automake intltool libgtk2.0-dev libtool-bin
+        run: sudo apt-get install intltool libgtk2.0-dev libtool-bin meson
 
       - name: Build
         env:
           CC: ${{ matrix.compiler }}
-        run: ./autogen.sh && make
+        run: meson setup builddir && meson compile -C builddir

[TobiX]

I'm not familiar with Meson myself, but saying that I have probably forgotten more about Autotools then most people know about it 😅 - So I'm fine with this change.

I thought about moving this tool to SDL once or twice, but that would mean basically rewriting it completely... And I didn't have the motivation to even start that anyways... If you have more modernization ideas, keep the PRs coming 😛

[TobiX]

PS: I had to reduce the required Meson version a bit, since I try to be compatible with current stable (LTS) versions of Ubuntu (Meson 0.61.2 on LTS 22.04, which is also used for GitHub Actions) and Debian (Meson 1.0.1 in Debian 12) - I left the one option which didn't exist in those versions commented out "for later".