From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-466744-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 23724 invoked by alias); 14 Nov 2014 11:19:40 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Received: (qmail 23635 invoked by uid 48); 14 Nov 2014 11:19:31 -0000
From: "howarth at bromo dot med.uc.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/63610] Fixing the libtool bug for Yosemite (darwin14)
Date: Fri, 14 Nov 2014 11:19:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: target
X-Bugzilla-Version: 4.9.1
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: howarth at bromo dot med.uc.edu
X-Bugzilla-Status: RESOLVED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 5.0
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-63610-4-4vLaE3kxzK@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-63610-4@http.gcc.gnu.org/bugzilla/>
References: <bug-63610-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2014-11/txt/msg01216.txt.bz2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63610

--- Comment #18 from howarth at bromo dot med.uc.edu ---
(In reply to Francois-Xavier Coudert from comment #17)
> (In reply to Iain Sandoe from comment #16)
> > Hmm the patch for __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ has been
> > applied to 4.9 (AFAICT)
> 
> Yes it has.
> 
> 
> > although not to 4.8
> 
> You're right. Provided that the patches are simple, maybe it's good enough
> to document them (as I have in the
> __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ patch for 4.8) and let
> distributors apply them.

There is nothing in the gcc build that *needs* to have MACOSX_DEPLOYMENT_TARGET
set, however some packaging environments, like fink and MacPorts, happen to set
MACOSX_DEPLOYMENT_TARGET by default and thus triggers the configure/libtool.m4
bug...

https://trac.macports.org/ticket/44596#comment:35

The Apple programmers told of the libtool.m4 bug so far all are of the view
that configure/libtool.m4 shouldn't really be defaulting to "-undefined
dynamic_lookup" as that can mask undefined symbols in release code (but should
be default "-undefined error").

https://trac.macports.org/ticket/44596#comment:48

However that is a really libtool bug.