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building numpy20 on native blas/lapack

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[Posted and mailed]In article <3AE608A8.755DEEE5 at pacific.jpl.nasa.gov>,Benyang Tang <btang at pacific.jpl.nasa.gov> writes:>> Hi,>> I am trying to build the new numpy20 on the linux native blas/lapack libraries. But by doing so I cannot import LinearAlgebra. Here is the import error message:>>>>> import Numeric>>>> import LinearAlgebra> Traceback (most recent call last):>   File "<stdin>", line 1, in ?>   File "/usr/local/lib/python2.1/site-packages/Numeric/LinearAlgebra.py", line 8, in ?>     import lapack_lite> ImportError: /usr/local/lib/python2.1/site-packages/Numeric/lapack_lite.so: undefined symbol: dgesvd_>>> I have changed the relenvant section of setup.py to>> sourcelist = ['Src/lapack_litemodule.c',]> # set these to use your own BLAS> library_dirs_list = ['/usr/lib','/usr/local/lib','/usr/lib/gcc-lib/i386-redhat-linux/egcs-2.91.66']> libraries_list = ['blas','g2c']dgesvd is a LAPACK function, not a BLAS function. You need a LAPACK library,and not just a BLAS. If you don't have an optimized version, then go tohttp://netlib.org/lapack to get the FORTRAN version. Compile it per the instructions and link it in before the BLAS library in the library_list.I don't know where to get convenient RPMs.> and have tried many other variants; none of them worked.>> During the setup process, there were messages:> Src/lapack_litemodule.c:11: warning: function declaration isn't a prototype> Src/lapack_litemodule.c:16: warning: function declaration isn't a prototype> Src/lapack_litemodule.c: In function `lapack_lite_dgeev':> Src/lapack_litemodule.c:93: warning: implicit declaration of function `dgeev_'[etc]Those are just warnings from gcc -Wall . No need for you to heed them (thoughperhaps the Nummies should, if only to prevent newbie-surprise).-- Robert Kernkern at caltech.edu"In the fields of hell where the grass grows high Are the graves of dreams allowed to die."  -- Richard Harter

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