Use cache

.github/workflows/codeql-analysis.yml

@@ -18,7 +18,7 @@ on:
     # The branches below must be a subset of the branches above
     branches: [master]
   schedule:
-    - cron: '38 23 * * 6'
+    - cron: "38 23 * * 6"
 
 jobs:
   analyze:
@@ -28,7 +28,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        language: [ 'cpp', 'javascript', 'python' ]
+        language: ["cpp", "javascript", "python"]
         # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
         # Learn more:
         # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
@@ -49,10 +49,21 @@ jobs:
 
       # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
 
-    - run: |
-       chmod +x setup.sh && chmod +x source/build.sh && sudo mkdir -p /build/cache && sudo chmod -R 777 /build
-       ./setup.sh
-       cd source && ./build.sh
+      - name: chmod
+        run: chmod +x setup.sh && chmod +x source/build.sh && sudo mkdir -p /build/cache && sudo chmod -R 777 /build
+
+      - name: Cached compiler source files
+        uses: actions/cache@v2.1.4
+        env:
+          cache-name: cache-compilers
+        with:
+          path: /build/cache
+          key: ${{ runner.os }}-build-${{ env.cache-name }}
+          restore-keys: |
+            ${{ runner.os }}-
+
+      - name: setup
+        run: ./setup.sh && cd source && ./build.sh
 
       - name: Perform CodeQL Analysis
         uses: github/codeql-action/analyze@v1