Re: [XaraXtreme-dev] Xcode link problem

["Ben Fowler" <ben.the.mole@xxxxxxxxx>]

On 24/04/06, Phil Martin <phil@xxxxxxxx> wrote:
> Ben Fowler wrote:
> >On 24/04/06, Phil Martin <phil@xxxxxxxx> wrote:
> >>
> >>I've got a few remaining unresolved symbols in the Xcode build of XaraLX
> >>which are related to libiconv and zlib:
> >>
> >>[ snip ]
>
> Thanks for the suggestions: I have fixed the libiconv problem by adding
> a reference to the "External frameworks and libraries" group as suggested.

Good to hear

> Zlib is still a problem though: Zlib is compiled inside Camelot and so
> the symbols really should be found during linking. __cplusplus is
> defined and zlib.h detects that to wrap it's interface with extern "C" {}.
>
> My next attack on this problem will be to try to find the difference
> between those symbols and others in zlib that apparently do link up.

Curious. Mac OS X provides otool to examine symbol tables (you might find a
GUI for it called Timmy O'Tool) and there is also nm . The latter
should clear up
any question of name mangling. There is also a very good page somewhere
under the general heading of migrating from BSD to Mac OS X which deals with
just these points.

Do the symbols needed for linking need to declared as extern as well
as extern "C"?

Ben