I have built atlas against gcc6, but have never bothered to build it against gcc7. For the reason: see https://trac.macports.org/ticket/52606
Using atlas is sub-optimal for macOS 10.11+, because of the way the OS kernel handles timing. Never mind, the new file system under High Sierra… I no longer choose atlas variants for any ports. > On Mar 15, 2018, at 11:56 AM, pagani laurent via macports-users > <macports-users@lists.macports.org> wrote: > > In fact, by using the +gcc5 as Craig suggested, I got the compiled libraries > straight away without the building. > Perhaps it is not tuned exactly to my machine but for my purpose, it seems to > be fast enough. > > Laurent > >> Le 15 mars 2018 à 17:37, David Strubbe <dstru...@macports.org >> <mailto:dstru...@macports.org>> a écrit : >> >> ATLAS just always takes a long time to build. It stands for "Automatically >> Tuned Linear Algebra System," so all that time is the automatic tuning. If >> you want a quicker build, use OpenBLAS or the built-in Accelerate framework. >> >> David >> >> On Thu, Mar 15, 2018 at 8:21 AM, Joshua Kordani <jkord...@lsa2.com >> <mailto:jkord...@lsa2.com>> wrote: >> This package will take a long time to build, although don't be surprised if >> it fails on the first try. I can never get it to work on the first try with >> default settings. >> >> >> >> On 3/15/18 9:45 AM, Craig Treleaven wrote: >> On Mar 15, 2018, at 8:29 AM, pagani laurent via macports-users >> <macports-users@lists.macports.org >> <mailto:macports-users@lists.macports.org>> wrote: >> >> I reinstalled gcc5, both gcc5 and 7 are active but the result is the same. >> I desactivate gcc7 but Xcode gcc takes precedence upon Macports/gcc5 even >> when I deactivate/reactivate the later. >> >> I’m not familiar with ATLAS but I think you need to choose one of the >> variants in order to build it with another compiler: >> >> $ port variants atlas >> atlas has the variants: >> gcc49: build using macports-gcc-4.9 >> * conflicts with gcc5 mpclang37 perf >> gcc5: build using macports-gcc-5 >> * conflicts with gcc49 mpclang37 perf >> mpclang37: use mp-clang-3.7 and gfortran >> * conflicts with gcc49 gcc5 perf >> nofortran: Forgo use of fortran compiler >> universal: Build for multiple architectures >> >> Perhaps try >> >> sudo port install atlas +gcc5 >> >> Also, some packages can take a very long time to build. Adding the verbose >> flag can give you more feedback as the build progresses: >> >> sudo port -v install atlas +gcc5 >> >> Craig >> >> > > "S'il n'y a pas de solution, c'est qu'il n'y a pas de problème" (devise > Shadok) > Marius -- Marius Schamschula
