From a post on the OpenModelica forum, I learned that the trouble was that I did not have the lapack port installed, and so the openmodelica-devel configure was attempting to use libatlas from atlas instead.
Subsequently, after cleaning everything, I did install lapack @3.8.0_0+gfortran. However, the configure still fails. Undoubtedly this is due to the fact that the following both involve atlas: octave @4.2.2_1+app+atlas+docs+fltk+gfortran+graphicsmagick+qt5+sound SuiteSparse @4.2.1_4+atlas [NB: octave depends on SuiteSparse] I wonder if the following ploy might work (this is the MacPorts part of the question): (1) uninstalling the +atlas variants of SuiteSparse and octave; (2) install openmodelica-devel (assuming that the presence of atlas and libatlas was the sole issue); then finally (3) reinstalling the +atlas variants of octave and SuiteSparse. Note that openmodelica _seems_ to use SuiteSparse as well as lapack. And sundials has a library dependency on SuiteSparse. Further information: [me:~]$ sp dependent atlas SuiteSparse depends on atlas arpack depends on atlas octave depends on atlas qrupdate depends on atlas [me:~]$ sp deps octave Full Name: octave @4.2.2_1+accelerate+app+docs+fltk+gfortran+graphicsmagick+qt5+sound Build Dependencies: gawk, icoutils, librsvg, grep, findutils, gsed, flex, bison, gperf, perl5, pkgconfig, gcc7, pkgconfig, librsvg, texinfo, texlive-basic, texlive-latex, texlive-fonts-recommended Library Dependencies: python27, ghostscript, gnuplot, less, ncurses, readline, pcre, SuiteSparse, qhull, zlib, hdf5, fftw-3, fftw-3-single, glpk, curl, qrupdate, arpack, fontconfig, freetype, gl2ps, vecLibFort, libgcc, qscintilla-qt5, fltk, libsndfile, portaudio, GraphicsMagick, qt5-qtbase, qt5-qttools Runtime Dependencies: epstool, ghostscript, fig2dev, pstoedit [me:~]$ sp deps openmodelica-devel Full Name: openmodelica-devel @1.13.0~dev-895-g0365526_0+gfortran5+omnotebook+qt+sundials Build Dependencies: gtime, gsed, cmake, pkgconfig, autoconf, automake, libtool Library Dependencies: lp_solve, gettext, omniorb, readline, qjson, libgcc, gcc5, sundials, qt4-mac, qwt52 Runtime Dependencies: omlib-modelica-3.2.1 > On 7 Apr2018, at 4:34 PM, Ken Cunningham <ken.cunningham.web...@gmail.com> > wrote: > > > >> On Apr 7, 2018, at 1:13 PM, Murray Eisenberg <murrayeisenb...@gmail.com> >> wrote: > > With a small change in the openmodelica-devel Portfile that I did prior to > starting the build (so it would use gcc7 for fortran), all of > openmodelica-devel built through to completion for me on a current Xcode and > 10.13 system, using no compiler variants, and only +libraries. > > set gfortran_versions {4.3 4.4 4.5 4.6 4.7 4.8 4.9 5 6 7} > set default_fortran_variant +gfortran7 > > > Ken --- Murray Eisenberg murrayeisenb...@gmail.com 503 King Farm Blvd #101 Home (240)-246-7240 Rockville, MD 20850-6667 Mobile (413)-427-5334