meta-qt5 fails yocto-check-layer for compatibility status

[denix0]

yocto-check-layer fails when testing meta-qt5 for Yocto Compatible status

AssertionError: Adding layer meta-qt5 changed signatures.
17 signatures changed, initial differences (first hash before, second after):
gdb:do_prepare_recipe_sysroot: 6544695b6748d8f6c37f21a4f67047b1115435e8e9d28893f846e28a39be7710 -> e911a9a9a21cf264de5a339cb9e6edcae7a3d07e85e7998d3865dff1d8660924
bitbake-diffsigs --task gdb do_prepare_recipe_sysroot --signature 6544695b6748d8f6c37f21a4f67047b1115435e8e9d28893f846e28a39be7710 e911a9a9a21cf264de5a339cb9e6edcae7a3d07e85e7998d3865dff1d8660924

This is due to this unconditional bbappend:
https://github.com/meta-qt5/meta-qt5/blob/master/recipes-devtools/gdb/gdb_%25.bbappend

Apparently meta-qt5 hasn't met Yocto Compatible requirements since 2015, when this bbappend was initially added...

[shr-project]

Please send patches if you're still using this.