[MacPorts] #38232: Change default compiler variant from +gcc45 to +gcc47

[MacPorts]

#38232: Change default compiler variant from +gcc45 to +gcc47
-------------------------------------------------+-------------------------
  Reporter:  larryv@…                            |      Owner:  larryv@…
      Type:  enhancement                         |     Status:  new
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:
Resolution:                                      |   Keywords:
      Port:  adaptor apbs apbs-mpi ardour2       |
  arpack atlas bali-phy ccpnmr cdf dotwrp ds9    |
  emos eo fftw fftw-single fortrancl ftidy gpp4  |
  hdf5 jags lam lanHEP libctl libxc lua-numlua   |
  magicspp miriad molden ncarg netcdf-fortran    |
  octave octave-devel offlinefs omnixmp openmpi  |
  p5-extutils-f77 pdb2pqr pgplot pure-gen py-    |
  milk py-obspy py-scipy py-usadel1 py25-pymc    |
  py25-pynifti py26-logilab-hmm py26-ngl         |
  py26-nio py26-pymc py26-pymvpa py26-pynifti    |
  py27-pymc qrupdate R scotch shogun snoopy      |
  splash swig whatcheck whizard                  |
-------------------------------------------------+-------------------------

Comment (by larryv@…):

 Regarding variant-less ports:

 * lanHEP: Variants added in r103605.
 * p5-extutils-f77: Updated with variants in r103606.
 * libxc: Variants submitted for consideration in #38260.
 * apbs, ccpnmr, pdb2pqr: Variants submitted for consideration in #38261.
 * lua-numlua: #38247 will remove the dependency on GCC altogether.
 * ds9: Broken as per comment:8; will let maintainer handle it.

 What should we do about offlinefs and apbs-mpi? I don’t want to bother
 adding variants if they don’t need them.

-- 
Ticket URL: <https://trac.macports.org/ticket/38232#comment:13>
MacPorts <http://www.macports.org/>
Ports system for Mac OS