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Hi, |
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I have to sadly report that currently the new blas infrastructure from the |
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science overlay is broken on at least OS X prefix. For example sage doesn't |
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start with the following message: |
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sage |
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---------------------------------------------------------------------- |
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| Sage Version 4.7.2.alpha2, Release Date: 2011-08-24 | |
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| Type notebook() for the GUI, and license() for information. | |
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---------------------------------------------------------------------- |
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********************************************************************** |
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* * |
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* Warning: this is a prerelease version, and it may be unstable. * |
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* * |
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********************************************************************** |
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--------------------------------------------------------------------------- |
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ImportError Traceback (most recent call last) |
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|
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/Users/frb15/Desktop/Gentoo/usr/lib/python2.7/site-packages/IPython/ipmaker.pyc |
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in force_import(modname, force_reload) |
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61 reload(sys.modules[modname]) |
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62 else: |
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---> 63 __import__(modname) |
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64 |
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65 |
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|
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/Users/frb15/Desktop/Gentoo/usr/bin/ipy_profile_sage.py in () |
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5 preparser(True) |
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6 |
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----> 7 import sage.all_cmdline |
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8 sage.all_cmdline._init_cmdline(globals()) |
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9 |
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|
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/Users/frb15/Desktop/Gentoo/usr/lib/python2.7/site-packages/sage/all_cmdline.py |
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in () |
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12 try: |
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13 |
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---> 14 from sage.all import * |
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15 from sage.calculus.predefined import x |
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16 preparser(on=True) |
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|
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/Users/frb15/Desktop/Gentoo/usr/lib/python2.7/site-packages/sage/all.py in () |
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73 from time import sleep |
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74 |
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---> 75 from sage.misc.all import * # takes a while |
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76 |
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77 from sage.misc.sh import sh |
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|
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/Users/frb15/Desktop/Gentoo/usr/lib/python2.7/site-packages/sage/misc/all.py |
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in |
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() |
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79 from func_persist import func_persist |
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80 |
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---> 81 from functional import (additive_order, |
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82 sqrt as numerical_sqrt, |
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83 arg, |
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|
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/Users/frb15/Desktop/Gentoo/usr/lib/python2.7/site-packages/sage/misc/functional.py |
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in () |
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36 |
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37 |
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---> 38 from sage.rings.complex_double import CDF |
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39 from sage.rings.real_double import RDF, RealDoubleElement |
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40 |
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|
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ImportError: |
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dlopen(/Users/frb15/Desktop/Gentoo/usr/lib/python2.7/site-packages/sage/rings/complex_double.bundle, |
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2): Symbol not found: _cblas_caxpy |
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Referenced from: /Users/frb15/Desktop/Gentoo/usr/lib/libgsl.0.dylib |
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Expected in: dynamic lookup |
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|
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The key word is dynamic lookup. On OS X most library have an install_name that |
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is losely speaking similar to a rpath. Library declare their install_name and |
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the install_name of all the libraries they depend on. But you can use "dynamic |
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look up" to get the kind of behavior you would expect on linux. For |
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some reason |
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switching to the new infrastructure break the dynamic look up of cblas |
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for gsl, |
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and probably scipy and other. I don't know if it is limited to python |
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extension |
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(in OS X speak bundles, on linux they appear as .so but in fact they may have |
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more in common with plugins). |
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|
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I also don't know if it is broken on other prefix, I suspect linux |
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prefixes are |
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OK. |
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|
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Francois |
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