> On 31 Jul 2015, at 21:36 , Berend Hasselman <[email protected]> wrote: > >> >> On 31-07-2015, at 20:46, peter dalgaard <[email protected]> wrote: >> >>> >>> On 31 Jul 2015, at 12:33 , Timothy Bates <[email protected]> wrote: >>> >>> This happened for me too: that Intel Core 2 is just too old for the >>> compiler. >>> >>> I used it as a stimulus to buy a new laptop… As a bonus, everything is ~10x >>> faster >>> Best, tim >> >> Hum, well, I wasn't actually planning to switch out my MB Air just now. >> >> I'm actually baffled that I haven't bumped into this before. Both my laptop >> and my office desktop are Core 2 Duo machines (and the latter is the one >> that builds the R source releases!). >> > > If you use gfortran: which version? > If you are not using any floating point then gfortran-4.8 will probably work > without problems. > I think. >
It's 4.2.1 and 4.2.3, it seems. That's for the local builds; for the CRAN binaries, it seems that I just never tried building a package with Fortran in it. Not sure whether I have used any Fortran binaries (is there an easy way to check whether a package contains Fortran?) >> Anyone have some harder info on this? Is it the case that gfortran-4.8 >> cannot compile code for the C2D architecture, or is it just that the >> compiler binaries on Simon's site were built for later architectures and are >> not backwards compatible. The latter could be fixed by rebuilding the >> compiler. >> > > As far I know the compiler binaries use/generate floating point instructions > directly or indirectly that cannot be handled by a C2D. > See this reply by Simon to my original post: > https://stat.ethz.ch/pipermail/r-sig-mac/2014-May/010895.html > Probably more than just the compiler binaries would have to be recompiled. > Yes, but "use/generate" is exactly the question. As far as I can tell, the invalid instruction is from f951 itself rather than the code that it generates. > Berend -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: [email protected] Priv: [email protected] _______________________________________________ R-SIG-Mac mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-mac
