Ensure that cmake and clang are installed

.gitea/workflows/ci_meson.yaml

@@ -17,12 +17,13 @@ on:
 
 jobs:
     build:
-        name: Build on ${{ matrix.os }} with Meson v${{ matrix.meson_version }}
+        name: Build on ${{ matrix.os }} with Meson v${{ matrix.meson_version }} and ${{ matrix.comp }}
         runs-on: ${{ matrix.os }}
         strategy:
             matrix:
-                os: [ubuntu-latest, ubuntu-22.04, ubuntu-20.04, ubuntu-18.04]
+                os: [ubuntu-latest, ubuntu-22.04, ubuntu-20.04]
                 meson_version: ["1.4.0"]
+                comp: [gcc, clang]
         steps:
             - name: Checkout Code
               uses: https://gitea.com/ScMi1/checkout@v1
@@ -31,11 +32,13 @@ jobs:
               with:
                 python-version: '3.x'
             - name: Install Dependencies
-              run: python -m pip install meson==${{ matrix.meson_version }} ninja
+              run: |
+                python -m pip install meson==${{ matrix.meson_version }} ninja
+                apt-install -y cmake clang build-essential
             - name: Configure Project
               run: meson setup build
               env:
-                CC: gcc
+                CC: ${{ matrix.comp }}
             - name: Compile
               run: meson compile -C build
             - name: Run Tests