In Qt 5, qmake generates CMake Config files which expose the plugins
as imported libraries. The name of these libraries are derived from
the plugin class name. So QCocoaIntegrationPlugin, and not qcocoa.
To keep compatibility between Qt5 and Qt6 CMake target names,
the pro2cmake script should generate plugin target names based on the
plugin class names.
To avoid passing the same name in qt_add_plugin (target and CLASS_NAME),
derive the class name from the target if the class name is
not explicitly specified.
Also add a new OUTPUT_NAME parameter which is used to change the
final file name of the plugin, so that it's compatible with Qt5.
For example to generate a qcocoa.dylib file, instead of
QCocoaIntegrationPlugin.dylib file.
The same OUTPUT_NAME value will be used for generation of plugin .prl
files for qmake consumption.
Change-Id: I4d53e680d7beb62befecd359cdf6bba60a34ff0d
Reviewed-by: Qt CMake Build Bot
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
f67d8ae2d4