diff options
authorSimon Hausmann <>2017-07-26 12:13:03 +0200
committerSimon Hausmann <>2017-07-26 14:31:11 +0000
commited90226834f8d4ef76149e995e2aecff68e4df43 (patch)
parent5952cb93cc93702124aaa5dec938581b0312761a (diff)
Fix loading of QML plugins with old IID in static builds
After commit 709f6370884b110def2e4665df8fa7bbf5fae734 we required the use of QQmlExtensionInterface_iid in qml plugins for static linkage. This mean that plugins using the "/1.0" variant would also continue to load, but those not would fail to load. This is annoying when porting apps from older Qt versions. To make the upgrade path easier, let's just support both IIDs. [ChangeLog][Qml] Fix loading of static qml plugins using the old plugin interface id Change-Id: I1c662b1fedad3f32b7dea1eddc32838d2eb9f3be Reviewed-by: J-P Nurmi <>
2 files changed, 5 insertions, 2 deletions
diff --git a/src/qml/qml/qqmlextensioninterface.h b/src/qml/qml/qqmlextensioninterface.h
index ef56d5e312..62b9b26569 100644
--- a/src/qml/qml/qqmlextensioninterface.h
+++ b/src/qml/qml/qqmlextensioninterface.h
@@ -66,7 +66,10 @@ public:
Q_DECLARE_INTERFACE(QQmlTypesExtensionInterface, "org.qt-project.Qt.QQmlTypesExtensionInterface/1.0")
+// NOTE: When changing this to a new version and deciding to add backup code to
+// continue to support the previous version, make sure to support both of these iids.
#define QQmlExtensionInterface_iid "org.qt-project.Qt.QQmlExtensionInterface/1.0"
+#define QQmlExtensionInterface_iid_old "org.qt-project.Qt.QQmlExtensionInterface"
Q_DECLARE_INTERFACE(QQmlExtensionInterface, QQmlExtensionInterface_iid)
diff --git a/src/qml/qml/qqmlimport.cpp b/src/qml/qml/qqmlimport.cpp
index ee5b38717b..ec748d1ca9 100644
--- a/src/qml/qml/qqmlimport.cpp
+++ b/src/qml/qml/qqmlimport.cpp
@@ -966,8 +966,8 @@ static QVector<QStaticPlugin> makePlugins()
// the list the first time called to only contain QML plugins:
const auto staticPlugins = QPluginLoader::staticPlugins();
for (const QStaticPlugin &plugin : staticPlugins) {
- if (plugin.metaData().value(QLatin1String("IID")).toString()
- == QLatin1String(QQmlExtensionInterface_iid)) {
+ const QString iid = plugin.metaData().value(QLatin1String("IID")).toString();
+ if (iid == QLatin1String(QQmlExtensionInterface_iid) || iid == QLatin1String(QQmlExtensionInterface_iid_old)) {