feat(ci): cache CMake deps (sources and build)

.github/workflows/ci.yml

@@ -20,12 +20,6 @@ jobs:
     env:
       build_type: Release # possible options: MinSizeRel Release, Debug, RelWithDebInfo
     steps:
-      - name: Git recursive checkout
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-          submodules: true
-
       - name: Install dependencies (Linux)
         if: runner.os == 'Linux' # see https://docs.github.com/en/actions/learn-github-actions/contexts#runner-context
         run: sudo apt-get update && sudo apt-get install libegl1-mesa-dev libdbus-1-dev libgtk-3-dev
@@ -34,6 +28,34 @@ jobs:
         if: runner.os == 'macOS' # see https://docs.github.com/en/actions/learn-github-actions/contexts#runner-context
         run: brew install mesalib-glw
 
+      - name: Git recursive checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+          submodules: true
+
+      - name: Cache CMake dependency source code
+        uses: actions/cache@v4
+        env:
+          cache-name: cache-cmake-dependency-sources
+        with:
+          path: ${{github.workspace}}/build/_deps/*-src
+          key: ${{ env.cache-name }}-${{ hashFiles('**/CMakeLists.txt', 'cmake/**') }}
+          restore-keys: |
+            ${{ env.cache-name }}-
+
+      - name: Cache CMake dependency build objects
+        uses: actions/cache@v4
+        env:
+          cache-name: cache-cmake-dependency-builds
+        with:
+          path: |
+            ${{github.workspace}}/build/_deps/*-build
+            ${{github.workspace}}/build/_deps/*-subbuild
+          key: ${{ env.cache-name }}-${{ matrix.os }}-${{ hashFiles('**/CMakeLists.txt', 'cmake/**') }}
+          restore-keys: |
+            ${{ env.cache-name }}-${{ matrix.os }}
+
       - name: Create Build Environment
         # Some projects don't allow in-source building, so create a separate build directory
         # We'll use this as our working directory for all subsequent commands