Compile demos during CI builds (#1037)

.azure/azure-pipelines-mac.yml

@@ -47,9 +47,14 @@ jobs:
       displayName: 'Compile fluidsynth'
     - script: |
         set -ex
-        cd build || exit -1
-        make -j3 check || exit -1
+        cd build
+        make -j3 check
       displayName: 'Execute Unittests'
+    - script: |
+        set -ex
+        cd build
+        make -j3 demo
+      displayName: 'Compile demos'
     - script: |
         set -ex
         cd build

.azure/azure-pipelines-vcpkg.yml

@@ -126,6 +126,10 @@ jobs:
         cmake --build build --config $(configuration) --target check --parallel 3
       displayName: 'Execute Unittests'
       condition: and(succeeded(), and(ne(variables['platform'], 'arm'), ne(variables['platform'], 'arm64')))
+    - bash: |
+        set -ex
+        cmake --build build --config $(configuration) --target demo --parallel 3
+      displayName: 'Compile demos'
     - script: |
         @ECHO ON
         cd build

.azure/azure-pipelines-win.yml

@@ -73,6 +73,12 @@ jobs:
         cd build || exit -1
         cmake --build . --config Release --target check || exit -1
       displayName: 'Execute Unittests'
+    - script: |
+        @ECHO ON
+        SET "PATH=d:\deps\bin;%PATH%"
+        cd build || exit -1
+        cmake --build . --config Release --target demo || exit -1
+      displayName: 'Compile demos'
     - script: |
         @ECHO ON
         cd build
@@ -140,6 +146,12 @@ jobs:
         cd build || exit -1
         cmake --build . --config $(CMAKE_CONFIG) --target check || exit -1
       displayName: 'Execute Unittests'
+    - script: |
+        @ECHO ON
+        SET "PATH=d:\deps\bin;%PATH%"
+        cd build || exit -1
+        cmake --build . --config $(CMAKE_CONFIG) --target demo || exit -1
+      displayName: 'Compile demos'
 
 - job: WindowsMinGW
   variables:
@@ -208,6 +220,15 @@ jobs:
         cd build || exit -1
         mingw32-make.exe -j4 check || exit -1
       displayName: 'Execute Unittests'
+    - script: |
+        @ECHO ON
+        SET "PATH=d:\deps\bin;%PATH%"
+        REM remove that path from PATH to make sure sh.exe is not found (cmake will complain otherwise)
+        set PATH=%PATH:C:\Program Files\Git\bin;=%
+        set PATH=%PATH:C:\Program Files\Git\usr\bin;=%
+        cd build || exit -1
+        mingw32-make.exe -j4 demo || exit -1
+      displayName: 'Compile demos'
     - script: |
         @ECHO ON
         cd build

.github/workflows/linux.yml

@@ -93,6 +93,11 @@ jobs:
       # Execute tests defined by the CMake configuration.
       run: make -j`nproc` check
 
+    - name: Demo
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: make -j`nproc` demo
+
     - name: Install
       working-directory: ${{github.workspace}}/build
       run: make install