cvs commit: src Makefile README

[M. Warner Losh]

In message: <20060621.123456.232930587.imp at bsdimp.com>
            "M. Warner Losh" <imp at bsdimp.com> writes:
: In message: <200606211306.36770.jhb at freebsd.org>
:             John Baldwin <jhb at freebsd.org> writes:
: : The nature of the compromise over 'make world' was that rather than removing 
: : the knob we'd leave it undocumented so that new users aren't tempted to use 
: : it, but instead will revert to using buildworld/installworld as they ought to 
: : if they get a failure running 'make world'.  If we are going to document the 
: : knob and thus make it user-supported, we might as well remove it and just 
: : make 'make world' user-supported.
: 
: The problem with making it 'user-supported' is that it really is a
: dangerous tool for the normal user.  Sure, it mostly works, most of
: the time, for most situations.  However, when it fails, it fails in an
: unsafe way.  It fails in a way that can't be backed out from easily,
: meaning someone will have to boot distribution media to back out to a
: known good state.  These events are rare, but totally #@$@!!@@#$ the
: user.
: 
: And we're back to the compromise that we had before...

Unless we want to require I_KNOW_WORLD_CAN_HURT_ME instead of
HISTORICAL_MAKE_WORLD :-)

Warner