[R-SIG-Mac] "gsl" does not seem to find installed GSL

[Marius Hofert]

On Wed, Oct 21, 2015 at 7:02 PM, Marius Hofert wrote:
> What fails? I did the exact same thing an another MacBook Pro a couple
> of months ago and it worked there (also under OS X 10.11)... this is
> strange.
>

I just tried to install "gsl" on the other machine again... and it
also failed. I must have installed it under OS X 10.10 then (before
the upgrade). Is this a known issue? (how can it be solved?)