Allow building on Ubuntu LTS & derivatives

CMakeLists.txt

@@ -51,7 +51,7 @@ include(ECMAddAppIcon)
 include(ECMQtDeclareLoggingCategory)
 include(ECMEnableSanitizers)
 add_definitions(-DTRANSLATION_DOMAIN=\"kdenlive\")
-find_package(KF5 5.45.0 REQUIRED COMPONENTS Archive Bookmarks CoreAddons Config ConfigWidgets
+find_package(KF5 REQUIRED COMPONENTS Archive Bookmarks CoreAddons Config ConfigWidgets
                             DBusAddons KIO WidgetsAddons NotifyConfig NewStuff XmlGui Notifications GuiAddons TextWidgets IconThemes Declarative Solid
                  OPTIONAL_COMPONENTS DocTools FileMetaData Crash Purpose)
 

src/dialogs/splash.cpp

@@ -34,8 +34,12 @@ Splash::Splash(QObject *parent)
 {
     KDeclarative::KDeclarative kdeclarative;
     kdeclarative.setDeclarativeEngine(m_engine);
+#if KDECLARATIVE_VERSION >= QT_VERSION_CHECK(5, 45, 0)
     kdeclarative.setupEngine(m_engine);
     kdeclarative.setupContext();
+#else
+    kdeclarative.setupBindings();
+#endif
     component = new QQmlComponent(m_engine);
     QQuickWindow::setDefaultAlphaBuffer(true);
     component->loadUrl(QUrl(QStringLiteral("qrc:/qml/splash.qml")));

src/effects/effectstack/view/builtstack.cpp

@@ -36,8 +36,12 @@ BuiltStack::BuiltStack(AssetPanel *parent)
     KDeclarative::KDeclarative kdeclarative;
     QQmlEngine *eng = engine();
     kdeclarative.setDeclarativeEngine(eng);
-    kdeclarative.setupContext();
+#if KDECLARATIVE_VERSION >= QT_VERSION_CHECK(5, 45, 0)
     kdeclarative.setupEngine(eng);
+    kdeclarative.setupContext();
+#else
+    kdeclarative.setupBindings();
+#endif
     // qmlRegisterType<ColorWheelItem>("Kdenlive.Controls", 1, 0, "ColorWheelItem");
     setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
     setMinimumHeight(300);