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

Alex Luso tapadamocho@yahoo....
Fri Oct 15 10:25:12 CDT 2010


  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?

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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