Set QT_HOST_PATH for parallel desktop installations

.github/workflows/test-android.yml

@@ -52,6 +52,22 @@ jobs:
           example-archives: ${{ matrix.qt.example-archives }}
           example-modules:  ${{ matrix.qt.example-modules }}
 
+      - name: Test QT_HOST_PATH
+        if: ${{ startsWith(matrix.qt.version, '6.') }}
+        shell: pwsh
+        run: |
+          $qmakeHostPrefix = [string](Resolve-Path -Path (qmake -query QT_HOST_PREFIX))
+          if ($env:QT_HOST_PATH -ne $qmakeHostPrefix) {
+            throw "QT_HOST_PATH should match qmake's QT_HOST_PREFIX."
+          }
+          if ($env:QT_HOST_PATH -eq $env:QT_ROOT_DIR) {
+            throw "QT_HOST_PATH and QT_ROOT_DIR should be different."
+          }
+          if ((Split-Path -Path $env:QT_HOST_PATH -Parent) -ne (Split-Path -Path $env:QT_ROOT_DIR -Parent)) {
+            throw "QT_HOST_PATH and QT_ROOT_DIR should have the same parent directory."
+          }
+          Write-Host "All tests passed!"
+
       - name: Install Android NDK
         shell: bash
         # Links to NDK are at https://github.com/android/ndk/wiki/Unsupported-Downloads

.github/workflows/test.yml

@@ -146,17 +146,14 @@ jobs:
           ls "${QT_ROOT_DIR}/bin/" | grep qmake
 
       - name: Switch macOS Xcode version with older Qt versions
-        if: ${{ matrix.qt.version && (startsWith(matrix.os, 'macos-13') || startsWith(matrix.os, 'macos-14')) }}
+        if: ${{ matrix.qt.version && startsWith(matrix.os, 'macos-13') }}
         shell: pwsh
         env:
           QT_VERSION: ${{ matrix.qt.version }}
         run: |
-          if ([version]$env:QT_VERSION -ge [version]"6.5.3") {
-              # GitHub macOS 13/14 runners use Xcode 15.0.x by default which has a known linker issue causing crashes if the artifact is run on macOS <= 12
-              sudo xcode-select --switch /Applications/Xcode_15.2.app
-          } else {
-              # Keep older Qt versions on Xcode 14 due to concern over QTBUG-117484
-              sudo xcode-select --switch /Applications/Xcode_14.3.1.app
+          if ([version]$env:QT_VERSION -lt [version]'6.5.3') {
+            # Workaround for QTBUG-117225
+            sudo xcode-select --switch /Applications/Xcode_14.3.1.app
           }
 
       - name: Configure test project on windows

action/src/main.ts

@@ -71,7 +71,7 @@ const flaggedList = (flag: string, listArgs: readonly string[]): string[] => {
   return listArgs.length ? [flag, ...listArgs] : [];
 };
 
-const locateQtArchDir = (installDir: string): string => {
+const locateQtArchDir = (installDir: string): [string, boolean] => {
   // For 6.4.2/gcc, qmake is at 'installDir/6.4.2/gcc_64/bin/qmake'.
   // This makes a list of all the viable arch directories that contain a qmake file.
   const qtArchDirs = glob
@@ -84,16 +84,18 @@ const locateQtArchDir = (installDir: string): string => {
   const requiresParallelDesktop = qtArchDirs.filter((archPath) => {
     const archDir = path.basename(archPath);
     const versionDir = path.basename(path.join(archPath, ".."));
-    return versionDir.match(/^6\.\d+\.\d+$/) && archDir.match(/^(android*|ios|wasm*|msvc*_arm64)$/);
+    return (
+      versionDir.match(/^6\.\d+\.\d+$/) && archDir.match(/^(android.*|ios|wasm.*|msvc.*_arm64)$/)
+    );
   });
   if (requiresParallelDesktop.length) {
     // NOTE: if multiple mobile/wasm installations coexist, this may not select the desired directory
-    return requiresParallelDesktop[0];
+    return [requiresParallelDesktop[0], true];
   } else if (!qtArchDirs.length) {
     throw Error(`Failed to locate a Qt installation directory in  ${installDir}`);
   } else {
     // NOTE: if multiple Qt installations exist, this may not select the desired directory
-    return qtArchDirs[0];
+    return [qtArchDirs[0], false];
   }
 };
 
@@ -455,7 +457,7 @@ const run = async (): Promise<void> => {
   }
   // Set environment variables/outputs for binaries
   if (inputs.isInstallQtBinaries) {
-    const qtPath = locateQtArchDir(inputs.dir);
+    const [qtPath, requiresParallelDesktop] = locateQtArchDir(inputs.dir);
     // Set outputs
     core.setOutput("qtPath", qtPath);
 
@@ -474,6 +476,15 @@ const run = async (): Promise<void> => {
       core.exportVariable("QT_ROOT_DIR", qtPath);
       core.exportVariable("QT_PLUGIN_PATH", path.resolve(qtPath, "plugins"));
       core.exportVariable("QML2_IMPORT_PATH", path.resolve(qtPath, "qml"));
+      if (requiresParallelDesktop) {
+        const hostPrefix = await fs.promises
+          .readFile(path.join(qtPath, "bin", "target_qt.conf"), "utf8")
+          .then((data) => data.match(/^HostPrefix=(.*)$/m)?.[1].trim() ?? "")
+          .catch(() => "");
+        if (hostPrefix) {
+          core.exportVariable("QT_HOST_PATH", path.resolve(qtPath, "bin", hostPrefix));
+        }
+      }
       core.addPath(path.resolve(qtPath, "bin"));
     }
   }