Qt4ProjectManager: Do not offer invalid qt versions

src/plugins/qt4projectmanager/qt-desktop/qt4desktoptargetfactory.cpp

@@ -121,6 +121,8 @@ QList<BuildConfigurationInfo> Qt4DesktopTargetFactory::availableBuildConfigurati
     QList<QtVersion *> knownVersions = QtVersionManager::instance()->versionsForTargetId(Constants::DESKTOP_TARGET_ID);
 
     foreach (QtVersion *version, knownVersions) {
+        if (!version->isValid())
+            continue;
         bool buildAll = version->defaultBuildConfig() & QtVersion::BuildAll;
         QtVersion::QmakeBuildConfigs config = buildAll ? QtVersion::BuildAll : QtVersion::QmakeBuildConfig(0);
 

src/plugins/qt4projectmanager/qt-desktop/qt4simulatortargetfactory.cpp

@@ -123,6 +123,8 @@ QList<BuildConfigurationInfo> Qt4SimulatorTargetFactory::availableBuildConfigura
     QList<QtVersion *> knownVersions = QtVersionManager::instance()->versionsForTargetId(Constants::QT_SIMULATOR_TARGET_ID);
 
     foreach (QtVersion *version, knownVersions) {
+        if (!version->isValid())
+            continue;
         bool buildAll = version->defaultBuildConfig() & QtVersion::BuildAll;
         QtVersion::QmakeBuildConfigs config = buildAll ? QtVersion::BuildAll : QtVersion::QmakeBuildConfig(0);
         QString dir = defaultShadowBuildDirectory(Qt4Project::defaultTopLevelBuildDirectory(proFilePath), Constants::QT_SIMULATOR_TARGET_ID);

src/plugins/qt4projectmanager/qt-maemo/qt4maemotargetfactory.cpp

@@ -147,6 +147,8 @@ QList<BuildConfigurationInfo> Qt4MaemoTargetFactory::availableBuildConfiguration
     QList<QtVersion *> knownVersions = QtVersionManager::instance()->versionsForTargetId(id);
 
     foreach (QtVersion *version, knownVersions) {
+        if (!version->isValid())
+            continue;
         bool buildAll = version->defaultBuildConfig() & QtVersion::BuildAll;
         QtVersion::QmakeBuildConfigs config = buildAll ? QtVersion::BuildAll : QtVersion::QmakeBuildConfig(0);
         QString dir = defaultShadowBuildDirectory(Qt4Project::defaultTopLevelBuildDirectory(proFilePath), id);

src/plugins/qt4projectmanager/qt-s60/qt4symbiantargetfactory.cpp

@@ -132,6 +132,8 @@ QList<BuildConfigurationInfo> Qt4SymbianTargetFactory::availableBuildConfigurati
     QList<QtVersion *> knownVersions = QtVersionManager::instance()->versionsForTargetId(Constants::S60_EMULATOR_TARGET_ID);
 
     foreach (QtVersion *version, knownVersions) {
+        if (!version->isValid())
+            continue;
         bool buildAll = version->defaultBuildConfig() & QtVersion::BuildAll;
         QtVersion::QmakeBuildConfigs config = buildAll ? QtVersion::BuildAll : QtVersion::QmakeBuildConfig(0);
         QString dir = defaultShadowBuildDirectory(Qt4Project::defaultTopLevelBuildDirectory(proFilePath), Constants::S60_EMULATOR_TARGET_ID);
@@ -140,6 +142,8 @@ QList<BuildConfigurationInfo> Qt4SymbianTargetFactory::availableBuildConfigurati
 
     knownVersions = QtVersionManager::instance()->versionsForTargetId(Constants::S60_DEVICE_TARGET_ID);
     foreach (QtVersion *version, knownVersions) {
+        if (!version->isValid())
+            continue;
         bool buildAll = version->defaultBuildConfig() & QtVersion::BuildAll;
         QtVersion::QmakeBuildConfigs config = buildAll ? QtVersion::BuildAll : QtVersion::QmakeBuildConfig(0);
         QString dir = defaultShadowBuildDirectory(Qt4Project::defaultTopLevelBuildDirectory(proFilePath), Constants::S60_DEVICE_TARGET_ID);