feat(examples): Add build/host tests to examples

.github/workflows/examples_build-host-test.yml

@@ -0,0 +1,48 @@
+name: "examples: build/host-tests"
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    types: [opened, synchronize, reopened, labeled]
+
+jobs:
+  build_all_examples:
+    if: contains(github.event.pull_request.labels.*.name, 'examples') || github.event_name == 'push'
+    name: Build examples
+    strategy:
+      matrix:
+        idf_ver: ["latest", "release-v5.1"]
+    runs-on: ubuntu-20.04
+    container: espressif/idf:${{ matrix.idf_ver }}
+    steps:
+      - name: Checkout esp-protocols
+        uses: actions/checkout@v3
+      - name: Build with IDF-${{ matrix.idf_ver }}
+        shell: bash
+        run: |
+          . ${IDF_PATH}/export.sh
+          python -m pip install idf-build-apps
+          # Build default configs for all targets
+          python ./ci/build_apps.py examples -m examples/.build-test-rules.yml -d -c
+
+  build_and_run_on_host:
+    if: contains(github.event.pull_request.labels.*.name, 'examples') || github.event_name == 'push'
+    name: Build and run examples on linux
+    strategy:
+      matrix:
+        idf_ver: ["latest"]
+    runs-on: ubuntu-20.04
+    container: espressif/idf:${{ matrix.idf_ver }}
+    steps:
+      - name: Checkout esp-protocols
+        uses: actions/checkout@v3
+      - name: Build with IDF-${{ matrix.idf_ver }}
+        shell: bash
+        run: |
+          . ${IDF_PATH}/export.sh
+          python -m pip install idf-build-apps
+          python ./ci/build_apps.py examples/mqtt -l -t linux
+          timeout 5 ./examples/mqtt/build_linux_default/esp_mqtt_demo.elf | tee test.log  || true
+          grep 'MQTT_EVENT_DATA' test.log

ci/build_apps.py

@@ -26,20 +26,25 @@ if __name__ == '__main__':
     parser.add_argument('-r', '--rules', nargs='*', default=['sdkconfig.ci=default', 'sdkconfig.ci.*=', '=default'], help='Rules how to treat configs')
     parser.add_argument('-m', '--manifests', nargs='*', default=[], help='list of manifest files')
     parser.add_argument('-d', '--delete', action='store_true', help='Delete build artifacts')
+    parser.add_argument('-c', '--recursive', action='store_true', help='Build recursively')
+    parser.add_argument('-l', '--linux', action='store_true', help='Include linux build (dont check warnings)')
     args = parser.parse_args()
 
     IDF_PATH = os.environ['IDF_PATH']
 
-    print(args.paths)
+    ignore_warning = os.environ['EXPECTED_WARNING'] if 'EXPECTED_WARNING' in os.environ else None
+    if args.linux:
+        SUPPORTED_TARGETS.append('linux')
+        ignore_warning = 'warning: '  # Ignore all common warnings on linux builds
     setup_logging(2)
     apps = find_apps(
         args.paths,
-        recursive=False,
+        recursive=args.recursive,
         target=args.target,
         build_dir='build_@t_@w',
         config_rules_str=args.rules,
         build_log_path='build_log.txt',
-        size_json_path='size.json',
+        size_json_path='size.json' if not args.linux else None,
         check_warnings=True,
         preserve=not args.delete,
         manifest_files=args.manifests,
@@ -54,5 +59,5 @@ if __name__ == '__main__':
         build_apps(apps,
                    dry_run=False,
                    keep_going=False,
-                   ignore_warning_strs=os.environ['EXPECTED_WARNING']
-                   if 'EXPECTED_WARNING' in os.environ else None))
+                   ignore_warning_strs=ignore_warning)
+    )

examples/.build-test-rules.yml

@@ -0,0 +1,3 @@
+examples/esp_netif/multiple_netifs:
+  disable:
+    - if: IDF_TARGET != "esp32"

examples/mqtt/CMakeLists.txt

@@ -4,7 +4,7 @@ cmake_minimum_required(VERSION 3.16)
 # For ESP32 platform target
 set(EXTRA_COMPONENT_DIRS $ENV{IDF_PATH}/examples/common_components/protocol_examples_common)
 
-if(${IDF_TARGET} STREQUAL "linux")
+if("${IDF_TARGET}" STREQUAL "linux")
 # For linux-target we have two options:
 # - With lwIP (must be defined on command line, e.g. idf.py -DWITH_LWIP=1)
 #     access networking from linux `tap` interface (TAP networking mode)

examples/mqtt/sdkconfig.defaults

@@ -1,2 +0,0 @@
-CONFIG_IDF_TARGET="linux"
-# CONFIG_ESP_EVENT_POST_FROM_ISR is not set

examples/mqtt/sdkconfig.defaults.esp32h2

@@ -0,0 +1,3 @@
+CONFIG_IDF_TARGET="esp32h2"
+CONFIG_EXAMPLE_CONNECT_WIFI=n
+CONFIG_EXAMPLE_CONNECT_ETHERNET=y

examples/mqtt/sdkconfig.defaults.linux

@@ -0,0 +1,2 @@
+CONFIG_IDF_TARGET="linux"
+# CONFIG_ESP_EVENT_POST_FROM_ISR is not set