[cmake] FEXConfig: use one qrc

[crueter]

Rather than manually creating a Qt 5 and Qt 6 QRC, instead we create a
single qrc that references a flattened directory. Then, we copy each of
its dependents (main, dialogs, icon) into the binary directory as-is,
resulting in just one qrc rather than having to maintain one for each.

Signed-off-by: crueter [email protected]

[crueter]

So Qt 5 doesn't support QML modules from CMake. I guess qmldir it is 😵‍💫

[crueter]

Note for self: Qt 5 supports only old var style https://doc.qt.io/archives/qt-5.15/qtcore-cmake-qt5-add-resources.html

No idea what to do at this point. The evil part of me says "drop Qt 5" but the 3 Ubuntu 20.04 users will impale me with pitchforks. The evil but slightly less pitchfork-risky solution is to just write the file manually. The slightly less evil idea is to do configure_file or something

[Sonicadvance1]

Note for self: Qt 5 supports only old var style https://doc.qt.io/archives/qt-5.15/qtcore-cmake-qt5-add-resources.html

No idea what to do at this point. The evil part of me says "drop Qt 5" but the 3 Ubuntu 20.04 users will impale me with pitchforks. The evil but slightly less pitchfork-risky solution is to just write the file manually. The slightly less evil idea is to do configure_file or something

Well, we only support back to Ubuntu 22.04, but it also doesn't have QT6 in the base packages (It's in backports I think?) which means the PPA builder can't rely on it.

[crueter]

Actually the package search indicates 6.2 is just in Universe https://packages.ubuntu.com/search?suite=jammy&arch=any&searchon=names&keywords=qt6-declarative

[crueter]

Okay so at this point there are two options:

1. Drop Qt 5 support since 22.04 has Qt 6 in base, and just use qt_add_qml_module
2. Use a single qrc, but flatten things in the CMAKE_CURRENT_BINARY_DIR

Final decision is not up to me, but option 1 should probably be done in a more formal manner where the deprecation/dropping is warned to users and developers + via the wiki. So my vote is for option 2 even though it somewhat pains me.

[crueter]

I forgot to git add