Add OS matrix for Ubuntu, Windows and macOS

.github/workflows/bld.yml

@@ -1,20 +1,20 @@
 name: bld-ci
 
-on: [push, pull_request, workflow_dispatch]
+on: [ push, pull_request, workflow_dispatch ]
 
 env:
   COVERAGE_JDK: "21"
-  COVERAGE_KOTLIN: "2.0.0"
+  COVERAGE_KOTLIN: "2.1.20"
-  KOTLIN_HOME: /usr/share/kotlinc
 
 jobs:
   build-bld-project:
-    runs-on: ubuntu-latest
-
     strategy:
       matrix:
-        java-version: [17, 21, 24]
+        java-version: [ 17, 21, 24 ]
-        kotlin-version: [1.9.25, 2.1.20]
+        kotlin-version: [ 1.9.25, 2.0.21, 2.1.20 ]
+        os: [ ubuntu-latest, windows-latest, macos-latest ]
+
+    runs-on: ${{ matrix.os }}
 
     steps:
       - name: Checkout source repository
@@ -28,6 +28,24 @@ jobs:
           distribution: "zulu"
           java-version: ${{ matrix.java-version }}
 
+      - name: Download dependencies [bld example]
+        working-directory: examples/bld
+        run: ./bld download
+
+      - name: Compile and run [bld examples]
+        working-directory: examples/bld
+        run: |
+          ./bld compile
+          ./bld run --args="example.html"
+          ./bld run-java --args="example.html"
+
+      - name: Run example [gradle examples]
+        working-directory: examples/gradle
+        if: matrix.java-version != '24'
+        run: |
+          ./gradlew run --args="example.html"
+          ./gradlew run --args="example.html"
+
       - name: Download dependencies
         run: ./bld download
 
@@ -39,11 +57,13 @@ jobs:
 
       - name: Remove pom.xml
         if: success() && matrix.java-version == env.COVERAGE_JDK && matrix.kotlin-version == env.COVERAGE_KOTLIN
+          && matrix.os == 'ubuntu-latest'
         run: rm -rf pom.xml
 
       - name: SonarCloud Scan
         uses: sonarsource/sonarcloud-github-action@master
         if: success() && matrix.java-version == env.COVERAGE_JDK && matrix.kotlin-version == env.COVERAGE_KOTLIN
+          && matrix.os == 'ubuntu-latest'
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}