4.5-> 5.2 upgrade path issues

[M. Warner Losh]

In message: <20031222233606.GL82802 at elvis.mu.org>
            Bill Fumerola <billf at freebsd.org> writes:
: On Tue, Dec 23, 2003 at 01:21:29AM +1030, Benjamin Close wrote:
: > 	Found an old box running FreeBSD 4.5 quite happily on our network.
: > Due to security issues (now I know the box exists), I've asked the admin
: > to update to 4.9 or Freebsd 5.2. He tried upgrading to FreeBSD 5.2 however
: > the build world failed with:
: 
: 4.X-ANYTHINGBUTSTABLE -> 5.X-ANYTHING is not a supported upgrade path.

Well, it does work.  You just need to define ALWAYS_CHECK_MAKE and it
will work.

Warner