clang+libc++ using missing powl

[David Chisnall]

On 5 Sep 2013, at 22:09, Steve Kargl <sgk at troutmask.apl.washington.edu> wrote:

> On Thu, Sep 05, 2013 at 09:52:13AM +0100, David Chisnall wrote:
>> On 4 Sep 2013, at 23:38, Baptiste Daroussin <bapt at freebsd.org> wrote:
>> 
>>> As a result we have a lot of fallouts of ports complaining about:
>>> undefined reference to `powl'
>>> 
>>> It seems like libc++ is relying on a function we don't have yet
>>> in libm, am I missing something?
>> 
>> I've attached a diff that I'd like to commit to msun
> 
> Why not disable libc++ from exposing these functions?

Because they're in the C++ spec and they should work.  I consider this a placeholder until we have the real versions in the tree (the wiki says you have coshl, sinhl, and tanhl, in progress, any idea of an ETA for them)?  

David