Patch to remove zlib.

[Jelmer Vernooij]

On Wed, Jul 09, 2014 at 11:05:38AM -0400, Ira Cooper wrote:
> 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.
Personally I think pkg-config is fine, but I thought it was worth pointing
out that this adds a hard dependency on pkg-config.

To detect zlib without the bundling stuff, see the existing configure step
in lib/zlib/wscript.

Cheers,

Jelmer