Apple's gcc can't handle deprecated attribute

[Jack Howarth]

On Thu, Oct 04, 2012 at 07:20:50PM +0200, Rainer Müller wrote:
> On 2012-10-04 15:16, MK-MacPorts at techno.ms wrote:
> > And here is another invalid attribute:
> > ---
> > lib/result.c:882:53: error: only weak aliases are supported on darwin
> > void result_free(result_t *r) __attribute__ ((weak, alias ("csvdb_free_result")));
> >                                                     ^
> > 1 error generated.
> 
> AFAIK this is not supported due to limitations in the Mach-O format, in
> contrast to ELF used on Linux and *BSD, where this combination is
> possible. I tried to find some document explaining the issues with this,
> however my search engine did not turn up anything useful besides lots of
> similar build errors in other projects...
> 
> Rainer

Note this issue is described in http://llvm.org/bugs/show_bug.cgi?id=11116.
The alternative of using weakref's apparently requires these be static...

http://www.lsd.ic.unicamp.br/~oliva/writeups/weakref/weakref.txt

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