can you try linking against libatlas manually? that should do it. then i'll to
fix the setup.py
Andrew Godbehere <[email protected]> schrieb:
>Hi Andy,
>
>I found _ATL_drotg defined in /opt/local/lib/libatlas.a.
>_ATL_drotg is listed as an undefined reference in libcblas.a,
>libf77blas.a, and libptcblas.a.
>
>That said, I'm mystified as to why these symbols cannot be located.
>Does this hint at a potential problem in linking?
>
>Thanks again,
>Andrew
>
>On Oct 16, 2012, at 3:26 PM, Andrew Godbehere
><[email protected]> wrote:
>
>> Also, for some reason, scikit-learn tries to build for posix on my
>system, rather than mac osx.
>>
>> On Oct 16, 2012, at 3:07 PM, Andrew Godbehere
><[email protected]> wrote:
>>
>>> Hi Andy,
>>>
>>> I was suspicious of clang, I'd rather this build with gcc. I'll look
>into changing that.
>>>
>>>
>>> Here's the output from distutils on blas_opt:
>>> {'extra_link_args': ['-Wl,-framework', '-Wl,Accelerate'],
>'extra_compile_args': ['-msse3',
>'-I/System/Library/Frameworks/vecLib.framework/Headers'],
>'define_macros': [('NO_ATLAS_INFO', 3)]}
>>>
>>> Do you see anything suspicious there?
>>>
>>> I'm trying to find _ATL_drotg, but I'm first having trouble locating
>the appropriate .so files on my system. I'll have more info once I
>track them down. I'll check cblas and atlas.
>>>
>>> Thanks for the help!
>>>
>>> Best,
>>> Andrew
>>>
>>> On Oct 16, 2012, at 1:11 PM, Andreas Mueller
><[email protected]> wrote:
>>>
>>>> Hi Andrew.
>>>> Let's see if we can get to the bottom of this.
>>>> I'm really no expert here.
>>>>
>>>> On 10/16/2012 09:01 PM, Andrew Godbehere wrote:
>>>>> otools (as opposed to ldd) on arrayfuncs.so yields:
>>>>> (1) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0,
>current version 169.3.0)
>>>>> (2)
>/System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
>(compatibility version 1.0.0, current version 4.0.0)
>>>>>
>>>>> I'm hoping this isn't an issue with OSX Accelerate.
>>>>>
>>>>> arrayfuncs.so was built as follows:
>>>>>
>>>>> /usr/bin/clang -bundle -undefined dynamic_lookup -L/opt/local/lib
>build/temp.macosx-10.8-x86_64-2.7/sklearn/utils/arrayfuncs.o
>-Lbuild/temp.macosx-10.8-x86_64-2.7 -lcblas -lm -o
>sklearn/utils/arrayfuncs.so -Wl,-framework -Wl,Accelerate
>>>>>
>>>> Err. Has any one tried building with clang yet? But I guess that's
>not the problem ;)
>>>> I would have expected some atlas linker flags.
>>>> Do you by any chance know where
>>>> _ATL_drotg is defined? I have drotg from cblas and it is defined in
>cblas.so. So I would guess some linker flag is missing.
>>>>
>>>> Also, could you please run:
>>>>
>>>> from numpy.distutils.system_info import get_info; print
>get_info('blas_opt', 0)
>>>>
>>>> This should tell us what numpy things are good compiler flags.
>>>>
>>>> Andy
>>>>
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