Dag Sverre Seljebotn <da...@...> writes:
>
> Max wrote:
> > Hi,
> > I'm trying to run testlapack example from cython-notur09 on OS X 10.6.
> > First, while compiling I faced with following error
> > gcc -L/sw64/lib -bundle -L/sw64/lib/python2.6/config -lpython2.6
> > build/temp.macosx-10.4-i386-2.6/lapack.o
> > -L/Applications/development/sage//local/lib -llapack -lf77blas -lcblas
> > -latlas -o lapack.so -g
> > Undefined symbols:
> > "_clapack_dgesv", referenced from:
> > _dgesv in lapack.o
> > _dsolve in lapack.o
> > ld: symbol(s) not found
> > So I changed clapack_dgesw in lapack.pxd to dgesw and successfully
> > build it against SAGE (sage-4.2.1-OSX10.6-Intel-64bit-i386-Darwin.dmg)
> > but when I run testlapack.test() python froze, using 100% of CPU,
> > below is debuging info.
> >
> >>>> tl.test()
> > test start
> > ^C
> > Program received signal SIGINT, Interrupt.
> > 0x00000001005280a4 in dgesv (__pyx_v_Order=CblasRowMajor, __pyx_v_N=3,
> > __pyx_v_NRHS=1, __pyx_v_A=0x7fff5fbfdda0, __pyx_v_lda=3,
> > __pyx_v_ipiv=0x7fff5fbfde10, __pyx_v_B=0x7fff5fbfddf0, __pyx_v_ldb=3)
> > at lapack.c:775
> > 775 static int dgesv(enum CBLAS_ORDER __pyx_v_Order, int __pyx_v_N,
> > int __pyx_v_NRHS, double *__pyx_v_A, int __pyx_v_lda, int
> > *__pyx_v_ipiv, double *__pyx_v_B, int __pyx_v_ldb) {
> > (gdb) exit
> >
> > I was also tried to build it against Mac OS X accelerated framework
> > and the result is the same, while on linux this example works fine.
> > Any suggestions what's wrong?
>
> Your change likely caused calling the Fortran dgesv instead. Fortran
> functions must be called in a different manner, which explains the crash.
>
> As to getting it working, what does
>
> import numpy
> numpy.show_config()
>
> say? Also, I'm worried that -L/sw64/lib comes before the Sage
> include...perhaps some libraries come from that directory and some from
> Sage and they don't match... *shrug*
>
Hi Dag, thanks for answer.
Here is a numpy config.
In [3]: numpy.show_config()
lapack_opt_info:
extra_link_args = ['-Wl,-framework', '-Wl,Accelerate']
extra_compile_args = ['-msse3']
define_macros = [('NO_ATLAS_INFO', 3)]
blas_opt_info:
extra_link_args = ['-Wl,-framework', '-Wl,Accelerate']
extra_compile_args = ['-msse3',
'-I/System/Library/Frameworks/vecLib.framework/Headers']
define_macros = [('NO_ATLAS_INFO', 3)]
I tried to remove -L/sw64/lib, but gcc didn't found libf77blas; moving
-L/sw64/lib after -L/Applications/development/sage//local/lib still gave
Undefined symbols:
"_clapack_dgesv", referenced from:
_dgesv in lapack.o
_dsolve in lapack.o
ld: symbol(s) not found
Regards,
Max
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