actions: CodeQL scanner

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,40 @@
+name: "Code scanning - action"
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 23 * * 5'
+
+jobs:
+  CodeQL-Build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        # We must fetch at least the immediate parents so that if this is
+        # a pull request then we can checkout the head.
+        fetch-depth: 2
+
+    # If this run was triggered by a pull request event, then checkout
+    # the head of the pull request instead of the merge commit.
+    - run: git checkout HEAD^2
+      if: ${{ github.event_name == 'pull_request' }}
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+
+    - name: Build yubico-pam
+      run: |
+        sudo apt install -y libykclient-dev libykpers-1-dev libyubikey-dev \
+          libpam-dev help2man asciidoc-base
+        autoreconf --install
+        ./configure
+        make
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1