OK, I understand that. But there seems to be a catch: * arpack does offer a +gcc5 variant, yet “sudo port info arpack” lists a build dependency on gcc6.
And as you’ve noticed and as I was already aware: * atlas has no +gcc6 variant. Will that be a problem in installing both arpack and atlas (before installing octave)? > On Nov 6, 2016, at 2:31 PM, Marius Schamschula <li...@schamschula.com> wrote: > > Murray, > > The version of gfortran depends on the version of gcc chosen by the compilers > port group (currently gcc5). > > On Nov 6, 2016, at 12:50 PM, Murray Eisenberg <murrayeisenb...@gmail.com > <mailto:murrayeisenb...@gmail.com>> wrote: > >>> >>> On Nov 6, 2016, at 1:27 PM, Marius Schamschula <li...@schamschula.com >>> <mailto:li...@schamschula.com>> wrote: >>> >>> >>> On Nov 6, 2016, at 12:19 PM, Murray Eisenberg <murrayeisenb...@gmail.com >>> <mailto:murrayeisenb...@gmail.com>> wrote: >>> >>>> I’m reinstalling arpack, atlas, and octave during completion of MacPorts >>>> migration to macOS Sierra. >>>> >>>> On El Capitan, my installed ports included: >>>> >>>> arpack @3.3.0_3+atlas+gfortran >>>> atlas @3.10.2_2 >>>> octave >>>> @4.0.3_1+app+atlas+docs+fltk+gfortran+graphicsmagick+qt4gui+sound-accelerate-java >>>> >>>> >>>> I began now with: >>>> >>>> sudo port install arpack -accelerate+atlas >>>> >>>> (1) Should I have added +gfortran there, since for octave I’m going to be >>>> including variant +gfortran ? >>>> >>>> (2) Is there any particular reason to use a +gccxx variant with atlas? >>> >>> The choice of which version of gfortran is used for arpack should be the >>> same as the version used to build atlas (and for that matter octave). >>> >>> Unfortunately, atlas currently only supports gcc5, not gcc6. See >>> https://trac.macports.org/ticket/52606 >>> <https://trac.macports.org/ticket/52606> >> >> >> I don’t understand about “which version of gfortran”: arpack, like octave, >> offers +gfortran but without any indication of version of gfortran. >> And atlas does not offer any variant (at least directly) of fortran. >> > --- Murray Eisenberg murrayeisenb...@gmail.com 503 King Farm Blvd #101 Home (240)-246-7240 Rockville, MD 20850-6667 Mobile (413)-427-5334
