Patch to remove zlib.

[Ira Cooper]

On Wed, Jul 9, 2014 at 11:01 AM, Jelmer Vernooij <jelmer at samba.org> wrote:

> On Mon, Jul 07, 2014 at 12:46:47PM -0400, Ira Cooper wrote:
> > Note: To apply it  unxz it then use git am --ignore-whitespace ,
> otherwise
> > you may have issues.  (xz was used to save the list a good bit of
> space...
> > it's over 500k gzipped.)
> >
> > As far as why: I listened to metze/vl.  I disagree with them.
> >
> > I believe that third party (non Samba Team developed) libraries do not
> > belong in the tree.  They are asking for trouble long term, IMHO.
> >
> > Consider this patch the first step down the path to cleaning up these
> > libraries.
> Thanks for working on this.  It'd be great to always rely on the system
> zlib.
> It reduces some overhead on us to support two configurations in waf (one
> with
> the bundled zlib and one with the system zlib), and keeping the zlib copy
> up to
> date. This is not a huge burden, but all the little bits help. :-)
>
> You probably want to use something other than CHECK_BUNDLED_SYSTEM() to
> detect zlib, since zlib is no longer bundled. CHECK_BUNDLED_SYSTEM() also
> relies exclusively on pkg-config (at least so its docstring claims) to find
> zlib; are we ready to make pkg-config a mandatory dependency?
>

As far as pkg-config goes, I debated that myself.  I submitted this version
with the lockdown in it.  If there is a waf check I can use instead I'm all
ears.

-Ira