svn commit: r248352 - in stable/9: etc share/mk

[Brooks Davis]

On Wed, Mar 20, 2013 at 09:18:08AM -0400, John Baldwin wrote:
> On Tuesday, March 19, 2013 4:06:31 pm Brooks Davis wrote:
> > On Tue, Mar 19, 2013 at 09:49:47PM +0400, Dmitry Morozovsky wrote:
> > > On Tue, 19 Mar 2013, Brooks Davis wrote:
> > > 
> > > > > >   Replace all known uses of ln in the build process with appropriate
> > > > > >   install -l invocations via new INSTALL_LINK and INSTALL_SYMLINK
> > > > > >   variables.
> > > > > 
> > > > > It seems this merge breaks ``make distribution'' and hence mergemaster if your 
> > > > > base system is not updated yet (for example, while updating jail):
> > > > 
> > > > Sorry for the delay in responding.  I missed this yesterday.
> > > > 
> > > > It works for me on a older 9.0-STABLE system where the base install
> > > > doesn't support -l.  Did you build world or run "make toolchain" in that
> > > > source tree to build the bootstrap copy of install?
> > > 
> > > Yes, this is after full ``make buildworld buildkernel'' process.
> > 
> > I've found the problem thanks to misc/177055.  It is that mergemaster
> > (and etcupdate) set MAKEOBJDIRPREFIX to something in their
> > temporary directory and thus deprive themselves of bootstrap tools.
> > Unfortunately, I don't see a trivial fix so I've backed this out for
> > now and will work on this in HEAD.
> 
> Hummmm.  In the case of etcupdate you can use 'etcupdate -B'.  That is actually safe
> to do in the common case where you've just updated /usr/src and built the corresponding
> world in /usr/obj.  It should possibly even by the default for etcupdate if a DESTDIR
> is not specified.

Finally getting back to this...

etcupdate -B would correct the immediate problem for etcupdate.  I do
think that making it the default if the tree exists makes sense.  It
won't be more broken than a cross installworld is.

I did a quick test when I first found this issue and it would be easy to
reuse the existing MAKEOBJDIRPREFIX in mergemaster as well.

I think we'll want to update UPDATING to recommend that the
mergemaster -p stage (and the equivalent for etcupdate) be run using the
version in the source tree, not the installed one.  I do wonder if it
would make sense for them to attempt to find and invoke that version so
simplify bootstrapping.

-- Brooks

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