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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: ANN: GCC 4.9.1 for Mac OS X Mavericks and Yosemite
Date: Tue, 21 Oct 2014 18:15:05 +0100
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Date: 2014-10-21T18:15:05+01:00
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David Botton <david@botton.com> writes:

> I got the following error trying to build:
>
> dyld: lazy symbol binding failed: Symbol not found: ___emutls_get_address
>   Referenced from:
> /usr/local/gnat-fsf/bin/../libexec/gcc/x86_64-apple-darwin13/4.9.1/gnat1
>   Expected in: /usr/lib/libSystem.B.dylib

I saw something like this before, which happened after I tried to
install a new (changed) build of the compiler over an old build.

Which I why I started from scratch for this release (and why it took a
day longer than it otherwise might have done!)

But, I wonder whether you saw this in the release note ..

   Install by
   =======

   $ cd /
   $ sudo tar jxvf ~/Downloads/gcc-4.9.1-x86_64-apple-darwin13.tar.bz2

   and put /opt/gcc-4.9.1/bin first on your PATH.

I know that GCC doesn't care whether it's on your path: that is,
/opt/gcc-4.9.1/bin/gnatmake will do The Right Thing (not so sure about
gprbuild, mind, haven't tried). But I do think the compiler expects to
find its components in the place it was built for.

I rebuilt gnoga with this compiler on Mavericks and Yosemite, no errors.