[R-SIG-Mac] How to get a Fortran compiler compatible to Xcode?

[Kevin Ushey]

Hi Marius,

I've had success compiling (the latest versions of) R from source
using Apple's command line tools (shipped with Xcode), alongside
gfortran 4.8.2 installed from here (as hosted by Simon Urbanek):

    http://r.research.att.com/libs/gfortran-4.8.2-darwin13.tar.bz2

Alternatively, (and what I tend to do by default on OS X), you can get
the latest release of `gfortran` using one of the custom Apple
'package managers', e.g. with homebrew (http://brew.sh/), you can use

    brew install gcc

which will get you an up-to-date copy of `gcc` (not really needed
since you'll have Apple clang), but also `gfortran` (which is needed
as it's no longer shipped with the Apple command line tools).

After this, as long as `gfortran` is on your PATH (e.g. by symlinking
the binary into /usr/local/bin), you should be good to go for building
R from source -- it will then be able to automatically discover where
the Fortran libraries live, and so on.

Kevin

On Sun, May 10, 2015 at 11:00 AM, peter dalgaard <pdalgd at gmail.com> wrote:
> You do need to read this:
>
> http://cran.r-project.org/doc/manuals/r-release/R-admin.html
>
> People are not inclined to write significant amounts of the same information to the list...
>
> -Peter D
>
>
>> On 10 May 2015, at 19:27 , Marius Hofert <marius.hofert at uwaterloo.ca> wrote:
>>
>> Dear Peter,
>>
>> Thanks for your quick help.
>>
>> I'm not so familiar with the technicalities (and try to learn): Where
>> is the file 'config.site' located in your system? Is this supposed to
>> be a file which provides settings for 'configure'?
>>
>> Thanks & cheers,
>> Marius
>>
>> PS: Also thanks for the hint towards r.research... I'll look into that
>> once everything else is running. I already have some things running,
>> e.g., texinfo, not sure if the 'texinfo' you mentioned is a specific
>> one (but I'll see then).
>>
>>
>>
>> On Sun, May 10, 2015 at 1:04 PM, peter dalgaard <pdalgd at gmail.com> wrote:
>>>
>>>> On 10 May 2015, at 17:13 , Marius Hofert <marius.hofert at uwaterloo.ca> wrote:
>>>>
>>>> Hi,
>>>>
>>>> I'm running Mac OS X Yosemite 10.10.3 on a MacBook Pro (Retina,
>>>> 13", 2015). I would like to install R from source (various
>>>> versions etc.) and thus installed Xcode (latest version:
>>>> 6.3.1). How can I get a Fortran compiler which is compatible with Xcode 6.3.1?
>>>>
>>>> Here is what I tried:
>>>> 1) I used to download and install gfortran-lion-5666-3.pkg from
>>>> http://r.research.att.com/tools but I now obtain "... can't be
>>>> installed on this disk. This package requires Xcode 4.1 with
>>>> gcc-4.2 (build 5666.3)". It seems that my (newer) Xcode version
>>>> is not recognized.
>>>> 2) I then installed gfortran-4.2.3.dmg from CRAN -> Download R
>>>> for (Mac) OS X -> tools. This worked fine, but then I ran into this issue:
>>>> I wanted to install MPI and thus downloaded and unpacked
>>>> openmpi-1.8.5.tar.gz from http://www.open-mpi.org/software/ompi/
>>>> but ./configure leads to an error:
>>>>
>>>> ...
>>>> checking if C and Fortran are link compatible... no
>>>> **********************************************************************
>>>> It appears that your Fortran compiler is unable to link against
>>>> object files created by your C compiler.  This typically indicates
>>>> one of a few possibilities:
>>>>
>>>> - A conflict between CFLAGS and FCFLAGS
>>>> - A problem with your compiler installation(s)
>>>> - Different default build options between compilers (e.g., C
>>>>   building for 32 bit and Fortran building for 64 bit)
>>>> - Incompatible compilers
>>>>
>>>> Such problems can usually be solved by picking compatible compilers
>>>> and/or CFLAGS and FCFLAGS.  More information (including exactly what
>>>> command was given to the compilers and what error resulted when the
>>>> commands were executed) is available in the config.log file in this
>>>> directory.
>>>> **********************************************************************
>>>> configure: error: C and Fortran compilers are not link compatible.
>>>> Can not continue.
>>>> sklar-2:openmpi-1.8.5 mhofert$
>>>>
>>>> I found this post
>>>> (http://grokbase.com/t/r/r-sig-mac/14awnd0341/compiling-r-3-1-1-sources-under-os-x-yosemite)
>>>> which seems to be related, but since there are no clear
>>>> instructions/scripts given, I still don't have a solution.
>>>>
>>>> How can I get a suitable/compatible Fortran compiler?
>>>>
>>>
>>> I think you already have one, you just need to set flags properly - the typical problem is that, with default settings, you get C compiled for 64 bits and Fortran for 32 bit.
>>>
>>> I have this:
>>>
>>> $ more config.site
>>> r_arch=${r_arch:=x86_64}
>>> CC="gcc -arch $r_arch"
>>> CXX="g++ -arch $r_arch"
>>> F77="gfortran -arch $r_arch"
>>> FC="gfortran -arch $r_arch"
>>> OBJC="gcc -arch $r_arch"
>>> with_blas="-framework vecLib"
>>> with_lapack=yes
>>> CURL_CONFIG=/usr/bin/curl-config
>>>
>>> Notice also, that with the newer sources, you need to install some stuff from http://r.research.att.com/libs/ : pcre, xz, texinfo, plus maybe some more that I have forgotten.
>>>
>>>
>>>
>>>> Thanks & cheers,
>>>> Marius
>>>>
>>>> _______________________________________________
>>>> R-SIG-Mac mailing list
>>>> R-SIG-Mac at r-project.org
>>>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac
>>>
>>> --
>>> Peter Dalgaard, Professor,
>>> Center for Statistics, Copenhagen Business School
>>> Solbjerg Plads 3, 2000 Frederiksberg, Denmark
>>> Phone: (+45)38153501
>>> Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com
>
> --
> Peter Dalgaard, Professor,
> Center for Statistics, Copenhagen Business School
> Solbjerg Plads 3, 2000 Frederiksberg, Denmark
> Phone: (+45)38153501
> Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com
>
> _______________________________________________
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