Cannot enable direct mode while using Shapes API

QtQuick.Shapes API cannot be found by the QML compiler when QT_QMLCACHEGEN_DIRECT_CALLS is enabled.

Compilation fails with `error: private/qquickshape_p.h: No such file or directory`.

/test/build/Desktop_Qt_6_7_2-Debug/.rcc/qmlcache/apptest_Main_qml.cpp:19:10: fatal error: private/qquickshape_p.h: No such file or directory
   19 | #include <private/qquickshape_p.h>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~`

Edit:

It worked.

The interface is a bit odd because one needs to specify QuickShapesPrivate in find_package, which breaks the usual pattern of finding packages that are not explicitly private and then linking to their private libraries in them via target_link_libraries. Nevertheless it worked, so thank you!

The resulting code looks like this:

find_package(Qt6 6.5 REQUIRED COMPONENTS Quick QuickShapesPrivate)

target_link_libraries(apptest
    PRIVATE Qt6::Quick
            Qt6::QuickPrivate
            Qt6::QuickShapesPrivate
)