The attached patch makes sure that the no-libs-for-startfile.patch (for Solaris?) is not applied on amd64-linux multilib systems. Otherwise the 32 bit parts can not be built. <http://thread.gmane.org/gmane.linux.gentoo.alt/3754>
Created attachment 155535 [details, diff] gcc-multilib.patch
ehm... that looks no good, as that patch is quite necessary on linux as well iirc.
can you post your emerge --info and describe the system you build on?
and that USE-flags are you using when emerging gcc? (emerge -av gcc)
WORKSFORME on no-multilib profile.. Installed versions: 4.2.4(4.2)(11:06:22 AM 06/05/2008) Multi-lib is such a headache that I don't want to touch it, sorry.
Since amd64 is all 64bits now..WONTFIX. Thanks for reporting and looking into it.