Re: Library for matrix operations? (eigenvalues, pseudoinverse)

Thank you very much Vasil for your response.

I already had that. But I keep getting the same problemI was looking at module as an example

https://github.com/kit-cel/gr-specest/blob/master/lib/CMakeLists.txt

However, in this example I need to remove this line; otherwise I get error. But I still can use Armadillo without having this line.

https://github.com/kit-cel/gr-specest/blob/fe599836c38e2a858c1ae0703ebd006a2fe9edae/CMakeLists.txt#L149

I do have some undefined symbols. Any advice of how to fix that?

ldd -r build/lib/lib*.so

undefined symbol: wrapper2_dgesdd_ (build/lib/libgnuradio-bcsi.so)
undefined symbol: wrapper2_dgesvd_ (build/lib/libgnuradio-bcsi.so)

ldd -r build/swig/*_swig.so

undefined symbol: wrapper2_dgesdd_ (/home/laura/Documents/BCSI/ASK-FM0/gr-bcsi/build/lib/libgnuradio-bcsi-1.0.0git.so.0.0.0)
undefined symbol: wrapper2_dgesvd_ (/home/laura/Documents/BCSI/ASK-FM0/gr-bcsi/build/lib/libgnuradio-bcsi-1.0.0git.so.0.0.0)

target_link_libraries(gnuradio-bcsi

${ARMADILLO_LIBRARIES}
${LAPACK_LIBRARIES}
${BLAS_LIBRARIES}
)

On Thu, Feb 6, 2020 at 10:38 AM Vasil Velichkov <address@hidden> wrote:

Hi Laura,

On 06/02/2020 20.16, Laura Arjona wrote:
> Whenever I try to use the *pinv* function inside my OOT block, I get the
> error : *AttributeError: 'module' object has no attribute 'cca_update'*
> I just comment the line about the pinv, and no error appears.

One of the possible reasons for this error is that you are not linking the library where the pinv function is implemented.

> *CMakeLists.txt file in my OOT Module*
> ########################################################################
> # Find gnuradio build dependencies
> ########################################################################
> find_package(BLAS REQUIRED)
> find_package(LAPACK REQUIRED)
> message(STATUS "LAPACK libraries: ${LAPACK_LIBRARIES}")
> message(STATUS "BLAS libraries: ${BLAS_LIBRARIES}")
> find_package(Armadillo)

You need to link the LAPACK and/or BLAS libraries to your OOT module. In lib/CMakeLists.txt you should have something like

target_link_libraries(<oot_module_name> ${LAPACK_LIBRARIES} ${BLAS_LIBRARIES} ...)

Replace <oot_module_name> with the name of your OOT module.

And after rebuilding make sure there are not undefined symbols in the shared objects

ldd -r build/lib/lib*.so
ldd -r build/swig/*_swig.so

Regards,
Vasil

From:	Laura Arjona
Subject:	Re: Library for matrix operations? (eigenvalues, pseudoinverse)
Date:	Thu, 6 Feb 2020 11:27:36 -0800