Catch up with the latest policies on knobs.

This commit is contained in:
David E. O'Brien 2005-02-28 09:42:08 +00:00
parent 30d7f067a4
commit 9146ea4e43
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=142770

View file

@ -209,6 +209,27 @@ or
.Va ${.ALLSRC}
and
.Va ${.TARGET} .
.It
To not build the
.Va foo
part of the base system,
use
.Va NO_FOO ,
not
.Va NOFOO .
.It
To optionally build something in the base system,
spell the knob
.Va WITH_FOO
not
.Va WANT_FOO ,
or
.Va USE_FOO .
The latter are reserved for the FreeBSD Ports Collection.
.It
For variables that are only checked with
.Va defined() ,
don't provide any fake value.
.El
.Pp
The desire to express a logical grouping often means not obeying some of the