reed_solomon.c:707: Warning: ignoring changed section attributes for
.text
kern/i386/pc/startup.S:161: Error: attempt to move .org backwards
make[3]: *** [kern/i386/pc/kernel_exec-startup.o] Error 1
Your earlier email suggests that you are using Gentoo, which has a recent compiler. Try using GCC 4.5 instead like this:
# ./configure CC=gcc-4.5 TARGET_CC=gcc-4.5
You might get more help if you provide more information about your system -- like version numbers for distro, compiler, and dependencies -- and make it clear that you are trying to build the bzr trunk or a supported branch.