Add GitHub Actions workflow.

.github/workflows/main.yml

@@ -0,0 +1,98 @@
+name: main
+
+on: [ push, pull_request, workflow_dispatch ]
+
+jobs:
+  cmake:
+    strategy:
+      matrix:
+        os: [ ubuntu-latest ]
+        profile: [ "Debug", "Release" ]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Get number of CPU cores
+        uses: SimenB/github-actions-cpu-cores@v1
+        id: cpu-cores
+
+      - uses: actions/checkout@v4
+
+      - name: "Install Dependencies"
+        run: |
+          sudo apt-get -qq update
+          sudo apt-get -qq install --no-install-recommends              \
+            gettext                                                     \
+            libasound2-dev                                              \
+            libbullet-dev                                               \
+            libgnutls28-dev                                             \
+            libopenxr-dev                                               \
+            libqscintilla2-qt5-dev                                      \
+            libsdl2-dev                                                 \
+            libvorbis-dev                                               \
+            libvulkan-dev                                               \
+            libwayland-dev                                              \
+            libxcursor-dev                                              \
+            libxkbcommon-dev                                            \
+            libxrandr-dev                                               \
+            qtbase5-dev
+
+            # Disabled due to warnings that break the debug build with -Werror
+            # libode-dev
+            # libavcodec-dev libavformat-dev libavutil-dev libswscale-dev
+
+      - name: "Configure: ${{ matrix.profile }}"
+        run: |
+          cmake -B build_${{ matrix.profile }} -DCMAKE_BUILD_TYPE=${{ matrix.profile }}
+
+      - name: "Build: ${{ matrix.profile }}"
+        run: |
+          cmake --build build_${{ matrix.profile }} --parallel ${{ steps.cpu-cores.outputs.count }}
+
+  wasm:
+    strategy:
+      # Concurrent builds currently broken:
+      #  https://github.com/mymindstorm/setup-emsdk/issues/20
+      matrix:
+        emsdk: [ "2.0.12" ] #, "3.1.8", "3.1.51" ]
+        profile: [ "rel" ] #, "dbg" ]
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Get number of CPU cores
+        uses: SimenB/github-actions-cpu-cores@v1
+        id: cpu-cores
+
+      - uses: actions/checkout@v4
+
+      - uses: mymindstorm/setup-emsdk@v13
+        with:
+          version: ${{ matrix.emsdk }}
+          actions-cache-folder: "emsdk-cache-${{ matrix.emsdk }}"
+
+      - name: Verify emscripten
+        run: emcc -v
+
+      - name: Build dependencies
+        working-directory: engine
+        run: |
+          make -j ${{ steps.cpu-cores.outputs.count }} makelibs FTE_TARGET=web
+
+      - name: Build wasm
+        working-directory: engine
+        run: |
+          # Currently fails to build
+          sed -r -i '/define Q3(CLIENT|SERVER)/d' common/config_fteqw.h
+
+          make -j ${{ steps.cpu-cores.outputs.count }} FTE_TARGET=web web-${{ matrix.profile }}
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: fteqw-web-${{ matrix.profile }}-em${{ matrix.emsdk }}
+          path: |
+            engine/*/ftewebgl.js
+            engine/*/ftewebgl.html
+            engine/*/ftewebgl.wasm
+          compression-level: 9