Re: FFI on OS X?

[Ludovic Courtès]

Hi,

Hans Aberg <address@hidden> writes:

> On 3 Mar 2011, at 11:40, Ludovic Courtès wrote:
>>>> The crux is that on older MacOS X versions ‘.dylib’ are shared
>>>> libraries (not dlopenable), whereas ‘.so’ are “bundles”
>>>> (dlopenable).  That’s why lt_dlopenext (which is what
>>>> ‘dynamic-link’ uses) doesn’t try to open ‘.dylib’ files.
>>>  The shared libraries (not dynamically loadable, except as when
>>> starting up the program like some web browser plugins) were on the
>>> PPC platform (XCOFF and PEF I think it was).
>>> 
>>> Now (Mac OS 10.5 and later), all is loadable. Haven't seen any .so
>>> files, except as coming from GNU/Linux.
>>  I would recommend discussing this with the Libtool folks, to see
>> how ltdl could adapt to the new situation.
>
> I recommend that too. - I brought it up a year ago, so if somebody
> wants to give it another take, please feel free to do it. :-)

It’d boil down to summarizing the situation and proposing a way to
detect whether .dylib can be dlopen’d.  I don’t have access to OS X,
though, so I won’t look into it.

[...]

>>> UNIX, and the only parts in the UNIX standard recognizing file name
>>  “UNIX standard”, what a funny phrase!  :-)
>
> Do you like "Single UNIX Specification" better?

Sure.  :-)

Ludo’.