Created attachment 440430 [details] build.log check_extra_config in pkg_pretend() of the ebuild fails compiling mono in a prefix (RAP). See build.log When I delete this line in pkg_pretend() the compilation works fine. Should this check could be disabled with prefix or changed into a warning? Or something similar?
Created attachment 440432 [details] die.env
Created attachment 440434 [details] output of emerge --info
It is caused by linux-info.eclass. It should look into ${EROOT}usr/src/linux, not ${ROOT}usr/src/linux.
fixing linux-info.eclass is disputable (we don't provide the kernel), the check could be non-fatal on Prefix though. I guess it needs revisiting in any case.