build: run compliance checks

This change ensures that code changes satisfy a number of
criteria before being considered for submission.

The compliance checks are similar to those in Zephyr.

Fixes #57

Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>

.github/workflows/compliance.yml

@@ -0,0 +1,80 @@
+name: Compliance
+
+on: pull_request
+
+jobs:
+  compliance_job:
+    runs-on: ubuntu-latest
+    name: Run compliance checks on patch series (PR)
+    env:
+      ZEPHYR_BASE: ${{ github.workspace }}/zephyr
+      ZEPHYR_TOOLCHAIN_VARIANT: zephyr
+      ZEPHYR_SDK_INSTALL_DIR: /opt/sdk/zephyr-sdk-0.11.4
+      WS: ${{ github.workspace }}
+      GB: ${{ github.workspace }}/greybus
+      PATH: ${{ github.workspace  }}/zephyr/scripts:${{ github.workspace  }}/tools/net-tools:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+    steps:
+    - name: Checkout the code
+      uses: actions/checkout@v2
+      with:
+        path: greybus
+
+    - name: cache-pip
+      uses: actions/cache@v1
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-doc-pip
+
+    - name: Install python dependencies
+      run: |
+        export PATH=$PATH:~/.local/bin
+        pip3 install setuptools
+        pip3 install wheel
+        pip3 install python-magic junitparser gitlint pylint pykwalify
+        pip3 install west
+
+    - name: Setup Environment
+      run: |
+        export PATH=$PATH:~/.local/bin
+        west init -l greybus
+        west update
+        cd ${ZEPHYR_BASE}
+        git apply ${GB}/zephyr-sys-byteorder-posix.patch
+        git apply ${GB}/zephyr-gpio-get-direction.patch
+        git apply ${GB}/zephyr-dynamic-pthread-stacks.patch
+
+    - name: Run Compliance Tests
+      id: compliance
+      env:
+        BASE_REF: ${{ github.base_ref }}
+      run: |
+        export PATH=$PATH:~/.local/bin
+        cd ${GB}
+        git config --global user.email "you@example.com"
+        git config --global user.name "Your Name"
+        git rebase origin/${BASE_REF}
+        ${ZEPHYR_BASE}/scripts/ci/check_compliance.py -m Codeowners -m Devicetree -m Gitlint -m Identity -m Nits -m pylint -m checkpatch -m Kconfig -c origin/${BASE_REF}.. || true
+
+    - name: upload-results
+      uses: actions/upload-artifact@master
+      continue-on-error: True
+      with:
+        name: compliance.xml
+        path: compliance.xml
+
+    - name: check-warns
+      run: |
+        for file in Nits.txt checkpatch.txt Identity.txt Gitlint.txt pylint.txt Devicetree.txt Kconfig.txt Codeowners.txt; do
+          if [[ -s $file ]]; then
+            errors=$(cat $file)
+            errors="${errors//'%'/'%25'}"
+            errors="${errors//$'\n'/'%0A'}"
+            errors="${errors//$'\r'/'%0D'}"
+            echo "::error file=${file}::$errors"
+            exit=1
+          fi
+        done
+
+        if [ ${exit} == 1 ]; then
+          exit 1;
+        fi