[llvm-dev] Availability of "-export_dynamic" when compiling with support for older OS X releases

[Bruce Hoult via llvm-dev]

Thanks for your progress messages. I still have 10.6.8 machines that I
might one day want a modern LLVM on, ranging from a Core Solo Mac Mini, to
an alternative boot partition on my main quad core i7 17" MBP (take it from
my cold dead hands etc etc).

Do you now have LLVM 3.8 working?

On Wed, Apr 13, 2016 at 10:57 PM, ardi via llvm-dev <llvm-dev at lists.llvm.org
> wrote:

> On Tue, Apr 12, 2016 at 3:48 PM, ardi <ardillasdelmonte at gmail.com> wrote:
> [...]
> >
> > Is there any way I can build LLVM 3.4.2 in El Capitan, specifying that
> > the linker will be the one from 10.6.8?
>
> In case anybody else faces this problem, if you build LLVM on a recent
> OS X release but specifying the deployment target to an older OS X
> version, when you run such build on the older OS X version, you need
> to specify -mlinker-version=97.17 as an option to clang/clang++ if the
> -rdynamic flag is also used. Otherwise, it will call the linker
> supposing it's a newer one, and it will fail because of unsupported
> options.
>
> It's somewhat uncomfortable to specify -mlinker-version=97.17 on each
> clang/clang++ invocation, but at least it fixes this problem and it
> works.
>
> ardi.
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