i noticed my kernel fails to build without smp support i am running gcc 3.1 others have noticed this also and someone pointed me to a resolution in an old kernel that worked for them. it can be found here http://www.van-dijk.net/linuxkernel/200218/0044.html
Created attachment 1638 [details] compile error forgot to attach my error from compile.
you didn't mention what kernel version, test in latest kernel gentoo-sources-2.4.19-r9 if still a bug, re-open this.