Make QT5_ADD_RESOURCES usable with build time generated qrc file

I'd like to create the qrc file on the fly during the build process. (e.g. with all qml files which are in one directory)

I use a shell script to compose the qrc file and leave it untouched if nothing has changed. Since the command has no file dependencies I have to use add_custom_target for the execution of that script. (add_custom_command would work dependency-wise, but would not be executed every build run unless I'd add a bogus dependency to some file which changes every time e.g. /proc/cpuinfo)

In order to be executed before the call of rcc it would be necessary to add a DEPENDS option to the function. Therefore i suggest the attached path.

But there is still a problem if one file from that folder got deleted: There would be an Make-error because on dependency to the rcc call would be missing. Then the next make call would work like a charm, because the qrc file was updated the last time (just before the error was produced))