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

[Marius Hofert]

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
>>
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>
> --
> 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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