Fix the macOS app not finding librtcheck.dylib, and smoke test the release zips

.github/workflows/build.yaml

@@ -166,6 +166,24 @@ jobs:
         working-directory: ${{ env.APP_DIR }}
         run: 7z a -aoa -tzip ${{ env.ZIP_FILE_NAME }} ${{ matrix.app }}
 
+      # Run the packaged app away from the build tree, as a user would, so anything
+      # that only resolves on the build machine (e.g. a dylib rpath) fails here
+      # rather than in a published release.
+      - name: Smoke test the zip
+        shell: bash
+        run: |
+          # The macOS binary also has the build tree's rtcheck directory as an rpath,
+          # which exists on this runner but not on a user's machine, so hide it to
+          # make sure the dylib bundled in the app is the one that's found.
+          rtcheck_build="$PWD/${{ env.BUILD_DIR }}/_deps/rtcheck-build"
+          if [ -d "$rtcheck_build" ]; then mv "$rtcheck_build" "$rtcheck_build.hidden"; fi
+
+          mkdir -p "$RUNNER_TEMP/smoke"
+          7z x -y -o"$RUNNER_TEMP/smoke" "${{ env.APP_DIR }}/${{ env.ZIP_FILE_NAME }}" > /dev/null
+          cd "$RUNNER_TEMP/smoke"
+          chmod +x ${{ matrix.test-binary }}
+          ${{ matrix.test-binary }} --version
+
       - name: Upload zip files
         uses: actions/upload-artifact@v4
         with:

CHANGELIST.md

@@ -21,6 +21,7 @@
 - Fixed false failures in the "Plugin state restoration" test where the first parameter was compared against the last value sent by a previous test rather than the plugin's own value
 - Below strictness level 8, two-step (on/off) parameters are now only sent 0 or 1 when tests randomise parameter values. Arbitrary values are still sent to them at level 8 and above, and to all other parameters at every level
 - Fixed the "Plugin state restoration" test's exact binary state comparison never running. It was documented as running at strictness level 8 and above but checked the test's own level instead of the run's
+- Fixed the macOS app failing to start on any machine other than the one that built it ("Library not loaded: @rpath/librtcheck.dylib"); this affected the `v2.0.0-beta1` and `v2.0.0-beta2` releases
 - Enabled the editor stress and extreme (real-time allocation / oversized block) tests that were present in the source tree but had not been compiled into the build
 
 ### 1.0.5

CMakeLists.txt

@@ -238,6 +238,11 @@ if (PLUGINVAL_ENABLE_RTCHECK)
         rtcheck)
 
     if (APPLE)
+        # The dylib is copied into the app bundle (below), so also look for it there.
+        # Otherwise the only rpath is the build tree's, and the app only starts on the
+        # machine that built it.
+        set_target_properties(pluginval PROPERTIES BUILD_RPATH "@executable_path/../Libraries")
+
         add_custom_command(TARGET pluginval POST_BUILD
                 COMMAND ${CMAKE_COMMAND} -E echo "Executable path: $<TARGET_FILE_DIR:pluginval>")
         add_custom_command(TARGET pluginval POST_BUILD