[SciPy-user] Plea: Installing SciPy on Mac 10.4.9: _fftpack.so problems?

[Nick Fotopoulos]

> Message: 5
> Date: Thu, 15 Mar 2007 15:07:26 -0400
> From: Lawrence David <ldavid at MIT.EDU>
> Subject: Re: [SciPy-user] Plea: Installing SciPy on Mac 10.4.9:
>         _fftpack.so     problems?
> To: SciPy Users List <scipy-user at scipy.org>
> Message-ID: <77114BB9-AB85-4BB2-85F5-DE324676EC3C at mit.edu>
> Content-Type: text/plain; charset="us-ascii"
>
> Hot darn Batman - you nailed it!!
>
> Much thanks,
> - lawrence
>
> http://www.stinkpot.org
>
>
> On Mar 15, 2007, at 12:58 PM, Robert Kern wrote:
>
> > Lawrence David wrote:
> >> Hi there,
> >>
> >> I'm pulling the little hair I have out trying to install SciPy on
> >> my G4
> >> PPC running OS 10.4.9.
> >>
> >> I've followed the instructions on the SciPy.org
> >> website: http://www.scipy.org/Installing_SciPy/Mac_OS_X.  I've got
> >> gcc
> >> 4.0.1 and gfortran (gnu95 -> 4.3).
> >>
> >> Running build: "python setup.py build_src build_clib --
> >> fcompiler=gnu95
> >> build_ext --fcompiler=gnu95 build", yields a long error message that
> >> terminates with a litany of "Undefined symbols" and this last
> >> message:
> >>
> >> collect2: ld returned 1 exit status
> >> error: Command "/usr/local/bin/gfortran -L/sw/lib
> >> build/temp.macosx-10.3-fat-2.5/build/src.macosx-10.3-fat-2.5/Lib/
> >> fftpack/_fftpackmodule.o
> >> build/temp.macosx-10.3-fat-2.5/Lib/fftpack/src/zfft.o
> >> build/temp.macosx-10.3-fat-2.5/Lib/fftpack/src/drfft.o
> >> build/temp.macosx-10.3-fat-2.5/Lib/fftpack/src/zrfft.o
> >> build/temp.macosx-10.3-fat-2.5/Lib/fftpack/src/zfftnd.o
> >> build/temp.macosx-10.3-fat-2.5/build/src.macosx-10.3-fat-2.5/
> >> fortranobject.o
> >> -L/usr/local/lib -L/usr/local/lib/gcc/powerpc-apple-darwin8.8.0/4.3.0
> >> -Lbuild/temp.macosx-10.3-fat-2.5 -ldfftpack -lfftw3 -lgfortran -o
> >> build/lib.macosx-10.3-fat-2.5/scipy/fftpack/_fftpack.so" failed with
> >> exit status 1
> >>
> >> I've noticed several other folks have had similar error messages
> >> on this
> >> board, but none of the posted solutions worked for me.  If anyone
> >> could
> >> offer any suggestions on what to try, I'd love to hear them!
> >
> > It looks like you have LDFLAGS defined (thus, the -L/sw/lib). That
> > *replaces*
> > all of the Python-specific linker flags that distutils provides.

The symptoms sound exactly like mine, except that in my case LDFLAGS
is definitely not defined, so the solution does not apply to me.  The
big thread http://groups.google.com/group/comp.lang.python/browse_thread/thread/1fadaffda3a768a7/9a76e6cb3482d4a7?lnk=st&q=distutils+build+flags+problems&rnum=14&hl=en#9a76e6cb3482d4a7
says more or less the same thing.

nvf at dirac:~$ echo $LD<tab><tab>
$LDG_DIRECTORY          $LDG_LOCATION           $LD_LIBRARY_PATH
$LDG_INSTALL_LOG        $LDG_SOFTWARE_LOCATION

Is there anything else that could cause missing flags?  Scipy builds for the
Apple-supplied Python 2.3, but does not build for MacPython 2.4 or
2.5.

I eventually got it to build using "python setup.py build_src
build_clib --fcompiler=gnu95 build_ext -lpython --fcompiler=gnu95
build", but unsurprisingly, it doesn't work.  I think it's picking up
the system python's libpython:

nvf at dirac:~$ python -c "import scipy; scipy.test(10,10)"
Fatal Python error: Interpreter not initialized (version mismatch?)
Abort trap
nvf at dirac:~$ locate libpython
/Developer/SDKs/MacOSX10.4u.sdk/usr/lib/libpython.dylib
/Developer/SDKs/MacOSX10.4u.sdk/usr/lib/libpython2.3.dylib
/Developer/SDKs/MacOSX10.4u.sdk/usr/lib/libpython2.dylib
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/config/libpython2.4.a
/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/config/libpython2.5.a
/usr/lib/libpython.dylib
/usr/lib/libpython2.3.dylib
/usr/lib/libpython2.dylib

Those libpython.dylibs just simlink to the libpython2.3.dylib.  I
would have thought that the MacPython installer would provide dynamic
libraries in addition to the static libraries.

I would appreciate any help on this, as my previous pleas have gone
unanswered.  If there's any other information I can provide, just let
me know.

Many thanks,
Nick