is enabled on in base; except for gcc 3.3, which does not have PIE support and
therefore needs to pass -nopie to the linker.
Also, sync powerpc pthread specs with base. From Brad.
ok naddy@
meant to be used on archs that have gcc4 in base, this doesn't require a
full gcc build from ports, and provides libgfortran as a subpackage.
idea from espie some months ago.