Sorry, I forgot to mention that I had downloaded and installed the gfortran
4.2.3 from here

http://r.research.att.com/tools/#gcc42

dhcp151062:R-devel tc$ gfortran --version
> GNU Fortran (GCC) 4.2.3
>

On Thu, Sep 3, 2009 at 3:14 PM, Tony Chiang <tchiang@fhcrc.org> wrote:

> Hi,
>
> So I am trying to configure and build the latest of R-devel on one of the
> new Macbook Pro's running Snow leopard. I have installed the latest X-Code
> tools (downloaded from the Apple Site) and have gcc installed:
>
> gcc --versioni686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build
>> 5646)
>>
>
> So as I am trying to configure, I get this error message:
>
> ...cut...
>
>> checking for Fortran 77 libraries of gfortran...  -L/usr/local/lib
>> -L/usr/local/lib/gcc/i686-apple-darwin8/4.2.3
>> -L/usr/local/lib/gcc/i686-apple-darwin8/4.2.3/../../.. -lgfortranbegin
>> -lgfortran
>> checking how to get verbose linking output from gcc -std=gnu99... -v
>> checking for C libraries of gcc -std=gnu99...  -lcrt1.10.6.o
>> -L/usr/local/lib -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/x86_64
>> -L/usr/lib/i686-apple-darwin10/4.2.1
>> -L/usr/lib/gcc/i686-apple-darwin10/4.2.1
>> -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../../i686-apple-darwin10/4.2.1
>> -L/usr/lib/gcc/i686-apple-darwin10/4.2.1/../../.. -lSystem
>> checking for dummy main to link with Fortran 77 libraries... rm:
>> conftest.dSYM: is a directory
>> none
>> checking for Fortran 77 name-mangling scheme... rm: conftest.dSYM: is a
>> directory
>> unknown
>> configure: WARNING: unknown Fortran name-mangling scheme
>> checking whether gfortran appends underscores to external names... unknown
>> configure: error: cannot use Fortran
>>
>
> I have not seen any messages quite like this on the mailing list. What is
> pretty strange is the conftest.dSYM needs to be removed (?) for some reason
> but is a directory. Any ideas or suggestions on how to resolve this?
>
> Best,
> --Tony
>

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