cvs's version of uclibc -- 08072004 -- has been bumped out of downloads/snapshots as its over a month old.
newer snapshots of uclibc appear to comment out the sigaction.c include, which probably make the sigaction patch in the buildroot no longer necessary. (it also fails to apply to newer snaps)
i assume these things are already known by cvs maintainers. just thought it might avoid questions by those trying to compile.