[SciPy-user] SciPy with gcc4 and gfortran on OS X
Zachary Pincus
zpincus at stanford.edu
Fri Apr 7 17:31:00 EDT 2006
Hi folks,
Emboldened by the some reported successes with compiling SciPy with
gfortran and gcc4 on OSX/Intel machines, I thought I'd give it a try
on my powerbook.
Unfortunately, it did not work -- but hopefully it's close, because
the problems I saw are all things that various people on this list
have seen and solved.
VITALS
OS X 10.4.6, on a PPC G4
gcc: powerpc-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer,
Inc. build 5250)
gfortran: GNU Fortran 95 (GCC) 4.2.0 20060218 (experimental)
(gfortran binary downloaded from hpc.sf.net today.)
SVN checkout of numpy and scipy from today.
BUILD PROBLEM
I only had one problem during the build -- there were errors like:
/usr/bin/ld: can't locate file for: -lcc_dynamic
I fixed this by modifying numpy/distutils/fcompiler/gnu.py so that
the Gnu95FCompiler class had a method like:
def get_libraries(self):
opt = GnuFCompiler.get_libraries(self)
if sys.platform=='darwin':
opt.remove('cc_dynamic')
return opt
so that the unnecessary cc_dynamic library was not included.
RUNTIME PROBLEMS
> In [1]: import scipy
> import linsolve.umfpack -> failed: No module named _umfpack
I think that people had seen this problem before, but using a more
recent gfortran solved it for them on intel macs. I'm using the most
recent gfortran from hpc.sf.net on my G4, so this problem still
persists.
> In [2]: scipy.test()
> import linsolve.umfpack -> failed: No module named _umfpack
> Overwriting fft=<function fft at 0x284f570> from
> scipy.fftpack.basic (was <function fft at 0x1395930> from
> numpy.dft.fftpack)
> Overwriting ifft=<function ifft at 0x284f5f0> from
> scipy.fftpack.basic (was <function inverse_fft at 0x1395970> from
> numpy.dft.fftpack)
...
> Adjust D1MACH by uncommenting data statements
> appropriate for your machine.
> STOP 779
Also a problem people had seen with gfortran, but one that I thought
had been patched.
For the time being, I'll just switch back to gcc3/g77. Hopefully this
information will help, though.
Zach
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