Overriding -Werror in buildworld/buildkernel

OK, I understand the developers' desire to catch errors, but didn't we
at one time have a means of overriding the -Werror flag?  I'm seeing a
lot of build failures lately due to warnings, not errors.

I thought adding WERROR=-Wno-error would do the trick, but it doesn't.

Any ideas?

-- 
Conrad J. Sabatier <conrads_at_cox.net> -- "In Unix veritas"