Allow user install

[Dag-Erling Smørgrav]

Warner Losh <wlosh at bsdimp.com> writes:
> Dag-Erling Smørgrav <des at des.no> writes:
> > I've been thinking for a while that some bor^H^H^Henterprising soul
> > should hack install(1) so that if a specific environment variable is
> > set, it writes the file to a tarball instead of writing it to disk.
> > Unfortunately, there would still be a ton of ${LN} etc. that would need
> > to be handled somehow.  Perhaps install(1) should have an option to
> > create symlinks so we could use that instead of ln -s, in the interest
> > of reducing the number of different tools used during installation.
> I'd prefer that to this hack, honestly, but this hack is cool.  NetBSD
> did this years ago, and bringing it and the changes to xtree would be
> a good thing.  There's also a number of mkdirs that also need to be
> updated.  Let's not reinvent the wheel here, when there's a perfectly
> good wheel elsewhere.

We already have install -d for mkdir, and in any case, very few
Makefiles actually create directories.

But if the Makefiles use ${LN} instead of ln, we can easily point LN at
a tool (perhaps even just a shell script) that does whatever is needed
to record the symlink in the tarball instead of creating it on disk.

DES
-- 
Dag-Erling Smørgrav - des at des.no