Add Posix build checker to git actions (#489)

* Add Posix build checker to git actions

* fix checker path

* Fix script, checkout recursively

* fix build check script return value

* clone submodules as well with posix checker

* Add quotes to true for submodules

* Fix Submodules

* Remove pcap dependency from Makefile

* install libpcap for build check

* Add networking build to posix

* Separate network build from normal build

* add libpcap after building normal posix

.github/workflows/core-checks.yml

@@ -43,4 +43,23 @@ jobs:
           export PYTHONPATH=tools/.github/scripts:${PYTHONPATH}
           .github/scripts/core_checker.py --json ${HOME}/files_modified.json ${HOME}/files_added.json ${HOME}/files_renamed.json
           exit $?
+  build-checker:
+    name: FreeRTOS Posix Build Check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone This Repo
+        uses: actions/checkout@v2
+        with:
+            path: ./workspace
+            submodules: 'recursive'
+            fetch-depth: 1
+      - name: Posix Build Checker
+        run: | 
+            bash workspace/.github/scripts/posix_build_checker.sh workspace
+      - name: Install lib pcap dev
+        run: |
+          sudo apt-get install libpcap-dev
+      - name: Posix Network Build Checker
+        run: | 
+            bash workspace/.github/scripts/posix_network_build_checker.sh workspace