Building with a static map tiles plugin in QML

[QtQueries]

Hi

I have created a custom map tiles engine in C++, which works well when compiled as a dynamic library and imported into a QML app on the simulator.

I wish however to have it as a static library, and bundle it in with my app... I can't get this to work.

My plugin's .pro file has the following lines

TARGET = MyMaps
CONFIG += staticlib mobility
MOBILITY += location

I also have the following line in one of the .cpp files:

Q_EXPORT_PLUGIN2(MyMaps, QMyMappingProvider)

Building this seems to work OK, a libMyMaps.a file is produced.

However I am having difficulty using it in my QML app.

My QML app's .pro file has the following lines

LIBS += \QtWorkspace\MyMaps-build-simulator\debug\libMyMaps.a

It builds OK, but when I run it, it crashes when loading my QML file. It contains the following:

Map {
    plugin: Plugin {
        name: "mymaps"
    }
}

I have tried including the line

Q_IMPORT_PLUGIN(MyMaps)

in my application's main.cpp, however this will not build, I get the error:

undefined reference to `qt_plugin_instance_MyMaps()'

Again, the plugin works well when included as a dynamic library!

How can I bundle this static library with my app? Must I have it as a separate plugin? It would be much cleaner for me to have it all as one project.

Help appreciated.

[divanov]

Plugin is a shared object (library) by definition. In case you compile it as a static library then just add it to QML context.

[QtQueries]

Plugin is a shared object (library) by definition.

Which plugin? The one I'm writing?

In case you compile it as a static library

I think I'm already doing that bit OK...

then just add it to QML context.

Sorry I don't understand this part, how exactly do I do that?

Thanks

[divanov]

Which plugin? The one I'm writing?

Like every plugin.

I think I'm already doing that bit OK...

If it's going so smoothly, why does this thead exist?

Sorry I don't understand this part, how exactly do I do that?

http://doc.qt.nokia.com/4.7/qdeclara...t.html#details

[QtQueries]

If it's going so smoothly, why does this thead exist?

Because I couldn't work out how to statically link it with my Qt application.

My problem went away when changing

LIBS += \QtWorkspace\MyMaps-build-simulator\debug\libMyMaps.a

to

LIBS += -L\QtWorkspace\MyMaps-build-simulator\debug -lMyMaps

That works well for the simulator, but I now have a new problem in that I can't link it statically for a Symbian build. I will take that to a new thread.

Thanks for the help anyway.