unittests/displaytest: fix #includes to allow out-of-tree builds
gtk3: Add menu_data.ui to the GResource file
Get rid of UTILS_AUXILIARY_GTK
gtk3: Add menu_data.ui to the GResource file
In any case, no strong preference from my side!
I understand that the GTK4 build would happen in a different directory with a different value of $UI in configure.ac. In that case you would still get information about what symbols are deprecated in the GTK4 build, because there you probably want to have that information in order to update them.
gtk3 is in maintenance mode and those flags only disable deprecation warnings for the gtk / glib code. Any other types of warnings (about deprecated functions or otherwise) are still visible. Here's my proposed alternative: https://sourceforge.net/p/fuse-emulator/fuse/merge-requests/39/
Fix #includes to allow out-of-tree builds