I think the implicit question was: "Do we guys have to build cross compilers now for every new platform LinuxBIOS supports before we can contribute?"
And probably the question should be no, without having to check code in ;-)
So I guess you will have to have a "patch master" for each arch who will sign off that the patch did not break thier compile(s)? That or the developer would have to install the cross compiler for all the archs.
Or possibly a system like Debian has for source packages where auto builders go and try to build everything and only after it passes all archs does it get accepted. You would e-mail your patch to the autobuilder and it would spit you back a log file.
-- Richard A. Smith