When compiling the .config into the kernel image. gentoo supply scripts to get the config back out, but not the binoffset binary, required to do the job. the .c or the binary itself should ideally already be supplied.
Created attachment 2408 [details] binoffset source
Created attachment 2409 [details] binoffset binary, compiled with -vomit-frame-pointer and -march=athlon-xp
got it.
mjc: should we make an ebuild for binoffset, or add the source to the kernel tree or what?
ebuild.
done for gentoo-sources-2.4.20