[CMake] Linking error after having found a package

[Eric Noulard]

2015-07-22 14:24 GMT+02:00 Cedric Doucet <cedric.doucet at inria.fr>:

>
> Hello,
>
> I try to use the find_package function to find BLAS and LAPACK libraries
> which are required in my code.
>
> To do that, I do the following:
>
> ======================
> FIND_PACKAGE(BLAS)
> FIND_PACKAGE(LAPACK)
>
> # I should test with BLAS_FOUND and LAPACK_FOUND here but that's not the
> problem
> LIST(GET BLAS_LIBRARIES 0 BLAS_LIB)
> LIST(GET LAPACK_LIBRARIES 0 LAPACK_LIB)
>
> TARGET_LINK_LIBRARY(myexe ${LAPACK_LIB}$ ${BLAS_LIB}$)
>


You have extraneous '$' at the end of your variables reference

${LAPACK_LIB}$
should be
${LAPACK_LIB}


> =======================
>
> I have manually checked that BLAS and LAPACK are actually found.
> As explained in FindBLAS.cmake and Find.LAPACK.cmake, BLAS_LIBRARIES and
> LAPACK_LIBRARIES are lists containing paths to these libraries.
> I get the first entry in each of these lists and try to link with these
> entries (/usr/lib/libf77blas.so, /usr/lib/liblapack.so).
> But I obtain the following error message:
>
> ==================================================
>
> g++: error: /usr/lib/liblapack.so$: No such file or directory
> g++: error: /usr/lib/libf77blas.so$: No such file or directory
>
> ==================================================
>

so g++ is indeed right, look at the dollar sign at the end of .so files.



>
> But these files exist in my computer.
>
>
> Do you know where the problem come from?
>
>
> Cheers,
>
>
> Cédric
>
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-- 
Eric
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