Add Portenta boards to Compile Examples CI workflow

.github/workflows/compile-examples.yml

@@ -27,6 +27,8 @@ jobs:
         - name: ArduinoMqttClient
       # sketch paths to compile (recursive) for all boards
       UNIVERSAL_SKETCH_PATHS: '"examples/ArduinoIoTCloud-Advanced" "examples/ArduinoIoTCloud-Basic" "examples/utility/ArduinoIoTCloud_Travis_CI"'
+      ARDUINOCORE_MBED_STAGING_PATH: extras/ArduinoCore-mbed
+      ARDUINOCORE_API_STAGING_PATH: extras/ArduinoCore-API
 
     strategy:
       fail-fast: false
@@ -39,6 +41,8 @@ jobs:
           {"fqbn": "arduino:samd:mkrwan1300", "type": "wan"},
           {"fqbn": "arduino:samd:mkrgsm1400", "type": "gsm"},
           {"fqbn": "arduino:samd:mkrnb1500", "type": "nb"},
+          {"fqbn": "arduino-beta:mbed:envie_m4", "type": "mbed"},
+          {"fqbn": "arduino-beta:mbed:envie_m7", "type": "mbed"},
           {"fqbn": "esp8266:esp8266:huzzah", "type": "esp8266"}
         ]
 
@@ -96,6 +100,18 @@ jobs:
               - name: RTCZero
               - name: MKRNB
             sketch-paths: '"examples/utility/Provisioning"'
+          # Portenta
+          - board:
+              type: "mbed"
+            platforms: |
+              # Install Arduino mbed-Enabled Boards via Boards Manager for the toolchain
+              - name: arduino-beta:mbed
+              # Overwrite the Arduino mbed-Enabled Boards release version with version from the tip of the master branch (located in local path because of the need to first install ArduinoCore-API)
+              - source-path: extras/ArduinoCore-mbed
+                name: arduino-beta:mbed
+            libraries: |
+              - name: ArduinoECCX08
+            sketch-paths: '"examples/utility/Provisioning"'
           # ESP8266 boards
           - board:
               type: "esp8266"
@@ -110,6 +126,37 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
+      # it's necessary to checkout the platform before installing it so that the ArduinoCore-API dependency can be added
+      - name: Checkout ArduinoCore-mbed
+        # this step only needed when the Arduino mbed-Enabled Boards platform sourced from the repository is being used
+        if: matrix.board.type == 'mbed'
+        uses: actions/checkout@v2
+        with:
+          repository: arduino/ArduinoCore-mbed
+          # the arduino/actions/libraries/compile-examples action will install the platform from this path
+          path: ${{ env.ARDUINOCORE_MBED_STAGING_PATH }}
+
+      - name: Remove ArduinoCore-API symlink from Arduino mbed-Enabled Boards platform
+        # this step only needed when the Arduino mbed-Enabled Boards platform sourced from the repository is being used
+        if: matrix.board.type == 'mbed'
+        run: rm "${{ env.ARDUINOCORE_MBED_STAGING_PATH }}/cores/arduino/api"
+
+      - name: Checkout ArduinoCore-API
+        # this step only needed when the Arduino mbed-Enabled Boards platform sourced from the repository is being used
+        if: matrix.board.type == 'mbed'
+        uses: actions/checkout@v2
+        with:
+          repository: arduino/ArduinoCore-API
+          # as specified at https://github.com/arduino/ArduinoCore-mbed/blob/master/README.md#installation
+          ref: namespace_arduino
+          path: ${{ env.ARDUINOCORE_API_STAGING_PATH }}
+
+      - name: Install ArduinoCore-API
+        # this step only needed when the Arduino mbed-Enabled Boards platform sourced from the repository is being used
+        if: matrix.board.type == 'mbed'
+        run: |
+          mv "${{ env.ARDUINOCORE_API_STAGING_PATH }}/api" "${{ env.ARDUINOCORE_MBED_STAGING_PATH }}/cores/arduino"
+
       - name: Compile examples
         uses: arduino/actions/libraries/compile-examples@master
         with: