shared libs for OSX

[Jacob Carlborg via Digitalmars-d]

On 2015-05-21 07:06, Joakim wrote:

> Actually, TLS works on OS X: dmd emulates it, while ldc has native TLS
> using undocumented OS X APIs.

The emulated TLS won't work with dynamic libraries. The runtime can only 
fetch the TLS data from one source, which will be the executable itself.

> I'm unsure of how full-fledged the
> support is on those other issues, but I believe the big issue is that
> loading multiple shared libraries is not supported, as that will take
> more work:
>
> https://github.com/D-Programming-Language/druntime/blob/master/src/rt/sections_osx.d#L198

No, that issue is loading dynamic libraries regardless if it's one or 
several. As you can see in the comment, it will pick the sections from 
the executable.

> If you want to talk to someone about getting more of shared libraries
> working, I believe Martin is your man.

Yeah, but I'm not sure how familiar he is with the OS X specific things. 
And native TLS is a requirement, which requires changes in the compiler 
and the runtime. Alternatively we need to reimplement the TLS handling 
from the dynamic linker.

-- 
/Jacob Carlborg