environment settings

[Mark Brethen]

> On Nov 26, 2018, at 10:39 AM, Ryan Schmidt <ryandesign at macports.org> wrote:
> 
> For example, I see here that they make a copy of the configured source directory so that they can build libtaucs.a "normally" in the first directory and then with position-independent code in the second directory so that a shared library can be created from it.

You are referring to the $(PICFLAG) variable in the second build? I wondered about that, and had read that it wasn’t necessary for Mac OSX?