[SciPy-User] Problem installing scipy on 10.6.4, python 2.7

[Ralf Gommers]

On Fri, Oct 15, 2010 at 11:25 PM, Alex Luso <tapadamocho at yahoo.com> wrote:

>
>   Hi,
>
>   I am trying to install Scipy from source on Python 2.7, Mac OS X 10.6.4
>
>   Despite following the instructions on the install page (i.e. use
> gcc++-4.0, etc, gfortran install), the install fails as follows:
>
> -- snip --
> many warnings
> ...
> ld: in /usr/lib/libSystem.B.dylib, missing required architecture ppc64 in
> file for architecture ppc64
> collect2: ld returned 1 exit status
> ld: warning: object file compiled with -mlong-branch which is no longer
> needed. To remove this warning, recompile without -mlong-branch:
> /usr/local/lib/gcc/powerpc-apple-darwin8/4.2.3/crt3.o
> lipo: can't open input file:
> /var/folders/4F/4F3fgpofFGSlvDrh+OmSHE+++TI/-Tmp-//cco4e1PE.out (No such
> file or directory)
> error: Command "/usr/local/bin/gfortran -Wall -arch ppc -arch i686 -arch
> x86_64 -arch ppc64 -Wall -undefined dynamic_lookup -bundle
> build/temp.macosx-10.5-fat3-2.7/build/src.macosx-10.5-fat3-2.7/scipy/fftpack/_fftpackmodule.o
> build/temp.macosx-10.5-fat3-2.7/scipy/fftpack/src/zfft.o
> build/temp.macosx-10.5-fat3-2.7/scipy/fftpack/src/drfft.o
> build/temp.macosx-10.5-fat3-2.7/scipy/fftpack/src/zrfft.o
> build/temp.macosx-10.5-fat3-2.7/scipy/fftpack/src/zfftnd.o
> build/temp.macosx-10.5-fat3-2.7/build/src.macosx-10.5-fat3-2.7/scipy/fftpack/src/dct.o
> build/temp.macosx-10.5-fat3-2.7/build/src.macosx-10.5-fat3-2.7/fortranobject.o
> -Lbuild/temp.macosx-10.5-fat3-2.7 -ldfftpack -lfftpack -lgfortran -o
> build/lib.macosx-10.5-fat3-2.7/scipy/fftpack/_fftpack.so" failed with exit
> status 1
> -- snip --
>
>   As a test, I tried to manually re-run that last offending command (the
> gfortran one) after manually removing -arch ppc64, no error is reported. Is
> that a clue?
>

It is, see http://projects.scipy.org/numpy/ticket/1399. The fix at
http://github.com/matthew-brett/numpy/compare/numpy:master...farchs-from-cshould
fix this problem.

Cheers,
Ralf


> Info:
> Mac OS 10.6.4
> I am using Python binary from python.org (the 64-bit version of it):
> $ python --version
> Python 2.7
>
> $ gcc --version
> i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5664)
>
> $ gfortran --version
> GNU Fortran (GCC) 4.2.3
>
>
>
>
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>
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