Thank you for clarify all this for me. If I understand correctly. I can build R from scratch with any compilers support required language features (like F95 or partial C99). And use those compilers to install packages from source. In this way I can take any advantaged may provid by those compilers or library like MKL.
However, if I want to use the distributed binary version of R, I have to use the same compiler configuration to build package or use the binary version package distributed from CRAN. Hope I get the right idea. On 28 Apr 2010, at 22:39, Simon Urbanek wrote: > > On Apr 28, 2010, at 4:26 PM, Yan Zhou wrote: > >> I have a some sort silly question. Which fortran compiler is usable with R, >> e.g., building package from source. >> >> I intended to install the gfortran from CRAN. But noticed that it will >> install cc1 and the text in installer stated that it is not recommended to >> install it with Xcode later than 3.2. I have 3.2.2 installed right now. >> > > Apple has not released Xcode 3.2.2 sources yet so we cannot build the > corresponding version. What you can do (if you want) is to save the cc1 from > Xcode and install the Fortran anyway. > > That said, you don't have to. You can equally well use the separate Fortran > from CRAN > http://cran.us.r-project.org/bin/macosx/tools/ > if you want. (It's not how we build R anymore but it also works - at least > with R 2.11.0) > > >> Besides I find on the website that gfortran from HPC will not work. >> >> So my question is that, what is the problem with the HPC version of >> gfortran. What is the criteria for a fortran compiler to be usable with R. > > It must support Apple driver's driver (for things like -arch ppc -arch i386 > etc.) and have the corresponding cross-compilers included so you can build > universal binaries. The HPC fortran is typically a single-host same-target > compiler so it won't be able to do that (and has no Apple driver). In > addition HPC compilers used to be a mess - they mostly didn't work at all due > to library issues and cross-OS pollution, but I didn't test them lately, so > may be things have improved in the meantime. > > >> I have intel fortran compiler installed. I managed to use it to compile a >> usable R-devel build from source. However, successful compiling doesn't >> imply that the generated code has no problem. >> > > If you build R from scratch from sources, there is no issue - you can use > almost anything. What we are talking about is CRAN R binary - and by > definition you can only use compilers that are compatible to the compilers > used to compile that binary. That's what the recommended compilers are about. > If you build your own R, you can use whatever flags you wish, so you can get > different compilers to work -- but you won't be able to install package > binaries from CRAN (in general). > I hope it helps. > > Cheers, > Simon > _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-mac
