ci: add lint & simple build

JIRA: CI-334

.github/workflows/ci.yml

@@ -0,0 +1,54 @@
+# vim:sw=2:ts=2
+# copy of ci-submodule.yml - but building only host tools on host-generic-pc TARGET
+name: ci
+
+# on events
+on:
+  push:
+    branches:
+      - master
+      - 'feature/*'
+  pull_request:
+    branches:
+      - master
+      - 'feature/*'
+
+jobs:
+  build:
+    name: build
+    runs-on: ubuntu-latest
+    steps:
+      # step 1 : checkout submodule
+      - name: Checkout submodule
+        uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      # step 2: checkout phoenix-rtos-project repository code in .buildroot and symlink submodule name to `workspace`
+      # that way workspace file paths will match submodule paths - making problem matchers work
+      # BUILD_DIRECTORY - absolute path to phoenix-rtos-project
+      # CI_CUSTOM_BUILDROOT - relative path to phoenix-rtos-project (from GH Actions workspace)
+      - name: Checkout phoenix-rtos-project
+        # we need to use relative paths here so they would work in docker env
+        run: |
+          mkdir .buildroot && cd .buildroot
+          git clone https://github.com/phoenix-rtos/phoenix-rtos-project --recurse-submodules
+          cd phoenix-rtos-project
+          echo "BUILD_DIRECTORY=$(pwd)" >> $GITHUB_ENV
+          echo "CI_CUSTOM_BUILDROOT=.buildroot/phoenix-rtos-project" >> $GITHUB_ENV
+          git log -1 --pretty=oneline
+          git submodule
+          rm -rf ${{ github.event.repository.name }}
+          ln -s ../.. ${{ github.event.repository.name }}
+
+      # attach GCC problem matcher - will pin problems to files only in current submodule
+      - uses: ammaraskar/gcc-problem-matcher@master
+
+      # step 3: use our custom action to build the project
+      - name: Build
+        id: build
+        uses: ./.buildroot/phoenix-rtos-project/.github/actions/phoenix-build    # BUILD_DIRECTORY value, but we can't use templates here
+        with:
+          target: 'host-generic-pc'
+          params: host
+          buildroot: ${{env.CI_CUSTOM_BUILDROOT}}

.github/workflows/lint.yml

@@ -0,0 +1,17 @@
+# vim:sw=2:ts=2
+name: lint
+
+# on events
+on:
+  push:
+    branches:
+      - master
+      - 'feature/*'
+  pull_request:
+    branches:
+      - master
+      - 'feature/*'
+
+jobs:
+  call-lint:
+    uses: phoenix-rtos/phoenix-rtos-project/.github/workflows/lint.yml@master