In this bug (https://bugs.gentoo.org/276262), the ebuild for grub2 was changed to have --disable-efiemu. I actually want to be able to use EFI emulation. I think this should be a USE flag, so I can --enable-efiemu, and others could keep it off. Reproducible: Always
Useflag efiemu added. Thanks for the report.
Thanks for adding this! :-)