[SciPy-Dev] installation of scipy on Mac OS X 10.7

[Samuel John]

Hey Ben, hey scipy community!

great description. Helped a lot.
I wonder why "pip install scipy" does not do this. 
Who feels responsible for the pip install? 
What is the suggested (default) way of installing scipy?
There is (not yet) a homebrew script. Do we want one?

Opinions?

cheers, 
 Samuel

On 09.08.2011, at 18:09, Ben Willmore wrote:

> I have spent a day attempting to get a version of scipy that passes unit tests on Mac OS X 10.7. I hope the results of my investigations (below) are useful to others trying to do the same thing.
> 
> Ben
> 
> 
> == Introduction
> 
> I have attempted to obtain a version of scipy on Mac OS X 10.7 that passes 
> unit tests, both by downloading it, or by compiling against the system's
> python, using the three C compilers available, and various compile flags.
> 
> 
> == Conclusions
> 
> 1. Both Enthought Python 7.1 and the scipy superpack crash during scipy unit 
> tests.
> 
> 2. Compilation with the default C compiler (llvm-gcc-4.2) also leads to a
> crash during unit tests.
> 
> 3. Compilation using either of the other C compilers (gcc-4.2 or clang) 
> allows scipy to complete unit tests, only if the fortran flag --ff2c is used.
> In both cases, scipy passes almost all tests -- producing errors on one, and
> failing two more. With gcc-4.2, numpy passes all tests. With clang, numpy 
> fails one test.
> 
> 4. The following recipe was most successful for me:
> 
> * Remove everything in /usr/local and /Library/Python/2.7/site-packages
>  (BEWARE! These directories may well contain stuff you care about)
> 
> * Install gfortran from here:
>  http://r.research.att.com/gfortran-lion-5666-3.pkg
> 
> mkdir ~/tmp
> cd ~/tmp
> git clone git://github.com/numpy/numpy.git
> cd numpy
> export CC=gcc-4.2
> export CXX=g++-4.2
> export FFLAGS=-ff2c
> python setupegg.py build --fcompiler=gfortran
> sudo python setupegg.py install
> 
> cd ~/tmp
> git clone git://github.com/scipy/scipy.git
> cd scipy
> export CC=gcc-4.2
> export CXX=g++-4.2
> export FFLAGS=-ff2c
> python setupegg.py build --fcompiler=gfortran
> sudo python setupegg.py install
> 
> (repeat for matplotlib, ipython ...)
> 
> 
> == Details of test results
> 
> = Enthought python 7.1
> numpy.test(): OK
> scipy.test(): Crash (Segmentation fault)
> 
> 
> = Scipy superpack
> numpy.test(): 3 failures:
> FAIL: test_umath_complex.TestCsqrt.test_special_values(<ufunc 'sqrt'>, 1, 
> inf, inf, inf)
> FAIL: test_umath_complex.TestCsqrt.test_special_values(<ufunc 'sqrt'>, -1, 
> inf, inf, inf)
> FAIL: test_umath_complex.TestCsqrt.test_special_values(<ufunc 'sqrt'>, 0.0, 
> inf, inf, inf)
> FAIL: test_umath_complex.TestCsqrt.test_special_values(<ufunc 'sqrt'>, -0.0, 
> inf, inf, inf)
> FAIL: test_umath_complex.TestCsqrt.test_special_values(<ufunc 'sqrt'>, inf, 
> inf, inf, inf)
> FAIL: test_umath_complex.TestCsqrt.test_special_values(<ufunc 'sqrt'>, -inf, 
> inf, inf, inf)
> FAIL: test_umath_complex.TestCsqrt.test_special_values(<ufunc 'sqrt'>, nan, 
> inf, inf, inf)
> FAIL: test_umath_complex.TestCsqrt.test_special_values(<ufunc 'sqrt'>, -inf, 
> 1, 0.0, inf)
> scipy.test(): Crash (Abort trap)
> 
> 
> = Compilation from scratch (see above for recipe)
> 
> = llvm-gcc-4.2
> = (no compiler flags)
> numpy.test(): OK
> scipy.test(): Crash (Segmentation fault: 11)
> 
> 
> = gcc-4.2
> = CC=gcc-4.2 CXX=g++-4.2
> numpy.test(): OK
> scipy.test(): Hang (during ARPACK tests)
> 
> 
> = clang
> = CC=clang CXX=clang++
> numpy.test(): 1 failure:
> FAIL: Test basic arithmetic function errors
> AssertionError: Type <type 'numpy.complex64'> did not raise fpe error ''.
> scipy.test(): Hang (during ARPACK tests)
> 
> 
> = llvm-gcc-4.2 and -ff2c
> = FFLAGS=-ff2c
> numpy.test(): OK
> scipy.test(): Crash (Segmentation fault: 11)
> 
> 
> = gcc-4.2 and -ff2c
> = CC=gcc-4.2 CXX=g++-4.2 FFLAGS=-ff2c
> numpy.test(): OK
> scipy.test(): 1 error, 2 failures:
> ERROR: test_arpack.test_hermitian_modes(True, <gen-hermitian>, 'F', 2, 'SA', 
> None, None, <function aslinearoperator at 0x1098cd500>)
> FAIL: test_iterative.test_convergence(<function bicg at 0x1098cdd70>, 
> <nonsymposdef>)
> FAIL: test_expon (test_morestats.TestAnderson)
> 
> 
> = clang and -ff2c
> = CC=clang CXX=clang++ FFLAGS=-ff2c
> numpy.test(): 1 failure:
> FAIL: Test basic arithmetic function errors
> AssertionError: Type <type 'numpy.complex64'> did not raise fpe error ''.
> scipy.test(): 1 error, 2 failures:
> ERROR: test_arpack.test_hermitian_modes(True, <gen-hermitian>, 'F', 2, 'SA', 
> None, None, <function aslinearoperator at 0x1098cd500>)
> FAIL: test_iterative.test_convergence(<function bicg at 0x1098cdd70>, 
> <nonsymposdef>)
> FAIL: test_expon (test_morestats.TestAnderson)
> 
> 
> 
> 
> 
> 
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