Re: [f2py] Problem compiling with F2PY using intel Fortran 64-bit compiler on OS X 10.6

  I found the problem (a pretty silly one!).  My $DYLD_LIBRARY_PATH did 
not include the $INTEL_ROOT library paths.  After adding these paths, I 
can now import 'fib1.so' compiled using the 64-bit intel fortran 
compiler without any error messages.

Apologies for the spam.   Just wanted to post in case anyone else runs 
into this issue.

Regards,
Ravi.
---------------------------------------

On 2/11/11 5:22 PM, Ravi Kanda wrote:
> Hi,
>
> I have been using F2PY for over 2 years now, primarily on Linux 
> (32-bit).  I recently moved my python computations to a MacPro 
> workstation (12-core, Intel Mac, 64-bit, with OS X 10.6.6; Python 
> 2.6.1, Numpy 2.0.0.dev-799179d).  Just to be safe, I am doing some 
> basic tests (compilers, speed, etc) before moving on to compiling more 
> complex f90 modules. I am able to compile the default test fortran 
> scripts (Fib1_Quick, Fib1_Smart: from the F2PY website) without any 
> problems using gfortran (4.2.1). However, with the intel 64-bit 
> compiler, IFORT, I get a "Library not loaded ... Image not found" 
> error message in the Python interpreter when I try to import the 
> shared library 'fib1.so' created using f2py.  I want to use the Intel 
> compiler for optimized performance of my f90 codes (I found 
> f2py/intel-compiled codes to be much faster when working on Linux).  
> The source, wrap-script, and diagnostics are in the attached ZIP file.
>
> ----------------------------
> INTEL COMPILER ISSUE DETAILS:
> ----------------------------
> I installed intel's 64-bit Fortran compiler (ifort 12.0.0 20101006 for 
> OS X) in INTEL_ROOT='/opt/intel'.  My $PATH contains $INTEL_ROOT/bin & 
> $LD_LIBRARY_PATH contains $INTEL_ROOT/lib.  I can compile native f90 
> programs from the Terminal.  Also, I store all my '*.so' libraries 
> under: $USER_ROOT/dv/products/modules, which is in $PYTHONPATH.  When 
> I compile Fib1_Quick example using the ifort compiler, I find that 
> 'fib1.so' is generated in the current working directory, and copied to 
> the above modules directory as well (see attached wrap script and 
> logfile) - and this works for the gfortran generated 'fib1.so' 
> library.  I also don't see any error/warning messages during the 
> wrapping process (see logfile).  Now, when I try to import the intel 
> 'fib1' from the python interpreter, I obtain the following error message:
> ---------------------------------------------------
> >>> import fib1
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> ImportError: dlopen(/Users/rkanda/dv/products/modules/fib1.so, 2): 
> Library not loaded: libifport.dylib
>   Referenced from: /Users/rkanda/dv/products/modules/fib1.so
>   Reason: image not found
> ---------------------------------------------------
>
> 'libifport.dylib' does exist under $INTEL_ROOT/lib, and hence, visible 
> via my $LD_LIBRARY_PATH.  I tried using f2py with and without the 
> '-L$LIB_DIR' as well as '-l$lib1 -l$lib2 ...' options but each time, I 
> get an identical error message in the python interpreter that the 
> library was not found.   Looking online, I found suggestions for using 
> 'otool' on the library to determine its dependencies.  This output is 
> also included in the attachment.  However, from the 'otool' log, I 
> can't figure out where python is looking for the '*.dylib' files.  In 
> desparation, I created soft links to the intel libraries in the above 
> modules directory, which is in my $PTYTHONPATH, as well as in the 
> system Python site-packages (where I instal all my public and private 
> Python packages).  That does not work either.
>
> I am probably doing something really stupid, but at a loss as to 
> what.  I will really appreciate any suggestions/ideas.
>
> Thanks in advance.
>
> Regards,
> Ravi Kanda.
> ------------------
>
>
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Ravi Kanda
PhD, California Institute of Technology, 2010
Currently, Post-Doctoral Fellow
Department of Geological Sciences
Global Change Research Center
National Taiwan University
Taipei, 10617
Taiwan.

Web Page: http://www.gps.caltech.edu/~rkanda

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For a human being, the unexamined life is not worth living - SOCRATES

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