make buildkernel fails without complete source tree

[Murray Stokely]

On 1/18/07, John Baldwin <jhb at freebsd.org> wrote:
===================================================================
> -      { " sys",                "/usr/src/sys (FreeBSD kernel)",
> +      { " sys",                "/usr/src/sys (FreeBSD kernel; requires 'base'
> to build)",

I think this is a good solution.

         - Murray