[mpich-discuss] g95 and mpich2 on new i686 MacOS 10.6 machine

[Dave Goodell]

I just ran into a similar problem yesterday on my new 10.6 machine.  I passed FFLAGS="-arch x86_64" F90FLAGS="-arch x86_64" to configure in order to solve the problem.  Anthony's suggestion of "-m64" may also solve the problem.

-Dave

On May 28, 2010 , at 9:11 AM CDT, Anthony Chan wrote:

> 
> Try setting FFLAGS=-m64 and F90FLAGS=-m64 as part of configure command.
> 
> A.Chan
> 
> ----- "Robert Kerr" <Robert.Kerr at warwick.ac.uk> wrote:
> 
>> I am working to install Fortran 90 and mpich2 on my new
>> Apple MacBook Pro with an Intel Core 2 Duo processor running
>> MacOS 10.6 machine.  I am moving from the Suse-Linux world.
>> 
>> I have downloaded and installed the Xcode package from
>> Apple Developer Tools.
>> 
>> I have downloaded and installed the 10.6 version of fink.
>> 
>> I have gone to the website http://www.g95.org/
>> and downloaded the x86 OSX version.  The
>> executable worked immediately after I untarred it.
>> 
>>> From the error message from mpich2, this might not
>> be the version of Fortran 90 that will work with mpich2.
>> 
>> The question now is what mpich2 to download and
>> any modifications to make it work.
>> 
>> I have downloaded: mpich2-1.2.1p1
>> 
>> I run ./configure
>> 
>> ERROR: in c.txt at the end I get:configure: error: ****  Incompatible
>> Fortran and C Object File Types!  ****
>> F77 Object File Type produced by "gfortran  -O2" is : : Mach-O object
>> i386.
>> C  Object File Type produced by "gcc  -O2" is : : Mach-O 64-bit
>> object
>> x86-64
>> 
>>> From what I can tell this is saying the fortran I got is for the
>> i386
>> processor, which I assume is the old 32-bit processor, even though it
>> runs on my machine, which I assume is 64-bit.  But mpich2 needs a
>> C-compiler and the version I got through Xcode supplies a 64-bit
>> version.
>> 
>> At what stage in this process have I made a mistake?
>> 
>> To get a reply do I need to login somewhere or is it sent to me?
>> 
>> Robert Kerr
>> Robert M. Kerr     email: Robert.Kerr at warwick.ac.uk
>> School of Engineering
>> University of Warwick
>> Coventry CV4 7AL, United Kingdom
>> 
>> 
>> 
>> 
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