add example build pipeline

Author: tatsuya-ogawa

.github/workflows/ci.yml

@@ -46,3 +46,13 @@ jobs:
               RUNTIME_PLATFORM="${{ matrix.platform }}" \
               DEVICE_NAME="${{ matrix.device_name }}" | xcbeautify
           fi
+
+  build-examples:
+    name: Build examples (iOS/visionOS)
+    runs-on: macos-26
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build VRMExample + VisionExample
+        run: |
+          set -o pipefail
+          make build-examples | xcbeautify

Makefile

@@ -3,6 +3,24 @@ PLATFORM_MATRIX ?= \
 	"watchOS,watchOS Simulator,Watch" \
 	"xrOS,visionOS Simulator,Apple Vision Pro"
 
+.PHONY: test test-package-platform build-examples build-example-ios build-example-vision
+
+EXAMPLE_PROJECT ?= Example/Example.xcodeproj
+IOS_SIM_DEST ?= generic/platform=iOS Simulator
+VISIONOS_SIM_DEST ?= generic/platform=visionOS Simulator
+
+build-examples: build-example-ios build-example-vision
+
+build-example-ios:
+	@set -e; \
+	echo "==> Building VRMExample (iOS Simulator)"; \
+	xcodebuild -project "$(EXAMPLE_PROJECT)" -scheme VRMExample -destination "$(IOS_SIM_DEST)" build
+
+build-example-vision:
+	@set -e; \
+	echo "==> Building VisionExample (visionOS Simulator)"; \
+	xcodebuild -project "$(EXAMPLE_PROJECT)" -scheme VisionExample -destination "$(VISIONOS_SIM_DEST)" build
+
 test:
 	@set -e; \
 	for entry in $(PLATFORM_MATRIX); do \