I am trying to use the Armadillo matrix library to do matrix calcualtions and it needs BLAS and LAPACK. The Armadillo documentation recommended getting the precompiled versions from http://www.stanford.edu/~vkl/code/libs.html
There are .lib and .dll files in there. The only problem is I don't know how to get Visual Studio (Express Edition 2008) to recognize these files. I try to copy them to the Visual C++ include and lib directories C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include\ and C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\lib\, but it doesn't seem to do anything because when I try to compile my program, I get lots of "unresolved external symbol" errors that say it can't find LAPACK functions.
EDIT:
Here are the error messages:
1>Linking... 1>LINK : warning LNK4076: invalid incremental status file 'C:\Users\User\Documents\Visual Studio 2008\Projects\TentPitcher\Debug\TentPitcher.ilk'; linking nonincrementally 1> Creating library C:\Users\User\Documents\Visual Studio 2008\Projects\TentPitcher\Debug\TentPitcher.lib and object C:\Users\User\Documents\Visual Studio 2008\Projects\TentPitcher\Debug\TentPitcher.exp 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _zgetrf_ referenced in function "void __cdecl arma::lapack::getrf_(int *,int *,double *,int *,int *,int *)" (??$getrf_@N@lapack@arma@@YAXPAH0PAN000@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _zgetrf_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _cgetrf_ referenced in function "void __cdecl arma::lapack::getrf_(int *,int *,double *,int *,int *,int *)" (??$getrf_@N@lapack@arma@@YAXPAH0PAN000@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _cgetrf_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _dgetrf_ referenced in function "void __cdecl arma::lapack::getrf_(int *,int *,double *,int *,int *,int *)" (??$getrf_@N@lapack@arma@@YAXPAH0PAN000@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _dgetrf_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _sgetrf_ referenced in function "void __cdecl arma::lapack::getrf_(int *,int *,double *,int *,int *,int *)" (??$getrf_@N@lapack@arma@@YAXPAH0PAN000@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _sgetrf_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _zgemv_ referenced in function "void __cdecl arma::blas::gemv_(char const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemv_@N@blas@arma@@YAXPBDPBH1PBN21212PAN1@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _zgemv_ 1>TwoCell3DXT.obj : error LNK2001: unresolved external symbol _zgemv_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _cgemv_ referenced in function "void __cdecl arma::blas::gemv_(char const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemv_@N@blas@arma@@YAXPBDPBH1PBN21212PAN1@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _cgemv_ 1>TwoCell3DXT.obj : error LNK2001: unresolved external symbol _cgemv_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _dgemv_ referenced in function "void __cdecl arma::blas::gemv_(char const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemv_@N@blas@arma@@YAXPBDPBH1PBN21212PAN1@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _dgemv_ 1>TwoCell3DXT.obj : error LNK2001: unresolved external symbol _dgemv_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _sgemv_ referenced in function "void __cdecl arma::blas::gemv_(char const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemv_@N@blas@arma@@YAXPBDPBH1PBN21212PAN1@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _sgemv_ 1>TwoCell3DXT.obj : error LNK2001: unresolved external symbol _sgemv_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _zgemm_ referenced in function "void __cdecl arma::blas::gemm_(char const *,char const *,int const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemm_@N@blas@arma@@YAXPBD0PBH11PBN21212PAN1@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _zgemm_ 1>TwoCell3DXT.obj : error LNK2001: unresolved external symbol _zgemm_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _cgemm_ referenced in function "void __cdecl arma::blas::gemm_(char const *,char const *,int const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemm_@N@blas@arma@@YAXPBD0PBH11PBN21212PAN1@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _cgemm_ 1>TwoCell3DXT.obj : error LNK2001: unresolved external symbol _cgemm_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _dgemm_ referenced in function "void __cdecl arma::blas::gemm_(char const *,char const *,int const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemm_@N@blas@arma@@YAXPBD0PBH11PBN21212PAN1@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _dgemm_ 1>TwoCell3DXT.obj : error LNK2001: unresolved external symbol _dgemm_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _sgemm_ referenced in function "void __cdecl arma::blas::gemm_(char const *,char const *,int const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemm_@N@blas@arma@@YAXPBD0PBH11PBN21212PAN1@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _sgemm_ 1>TwoCell3DXT.obj : error LNK2001: unresolved external symbol _sgemm_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _zgetri_ referenced in function "void __cdecl arma::lapack::getri_(int *,double *,int *,int *,double *,int *,int *)" (??$getri_@N@lapack@arma@@YAXPAHPAN00100@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _zgetri_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _cgetri_ referenced in function "void __cdecl arma::lapack::getri_(int *,double *,int *,int *,double *,int *,int *)" (??$getri_@N@lapack@arma@@YAXPAHPAN00100@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _cgetri_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _dgetri_ referenced in function "void __cdecl arma::lapack::getri_(int *,double *,int *,int *,double *,int *,int *)" (??$getri_@N@lapack@arma@@YAXPAHPAN00100@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _dgetri_ 1>Cell3DXT.obj : error LNK2019: unresolved external symbol _sgetri_ referenced in function "void __cdecl arma::lapack::getri_(int *,double *,int *,int *,double *,int *,int *)" (??$getri_@N@lapack@arma@@YAXPAHPAN00100@Z) 1>ThreeCell3DXT.obj : error LNK2001: unresolved external symbol _sgetri_ 1>TwoCell3DXT.obj : error LNK2019: unresolved external symbol _dgesvd_ referenced in function "void __cdecl arma::lapack::gesvd_(char *,char *,int *,int *,double *,int *,double *,double *,int *,double *,int *,double *,int *,int *)" (??$gesvd_@N@lapack@arma@@YAXPAD0PAH1PAN122121211@Z) 1>TwoCell3DXT.obj : error LNK2019: unresolved external symbol _sgesvd_ referenced in function "void __cdecl arma::lapack::gesvd_(char *,char *,int *,int *,double *,int *,double *,double *,int *,double *,int *,double *,int *,int *)" (??$gesvd_@N@lapack@arma@@YAXPAD0PAH1PAN122121211@Z) 1>C:\Users\User\Documents\Visual Studio 2008\Projects\TentPitcher\Debug\TentPitcher.exe : fatal error LNK1120: 18 unresolved externals 1>Build log was saved at "file://c:\Users\User\Documents\Visual Studio 2008\Projects\TentPitcher\TentPitcher\Debug\BuildLog.htm" 1>TentPitcher - 43 error(s), 1 warning(s)
"Cell3DXT", "TwoCell3DXT", and "ThreeCell3DXT" are classes in my own code. Also in the LAPACK and BLAS files above, there are ".exp files" - what are those and do those have something to do with the problem?
I figured out the answer to my problem. The problem was that I knew I had to put the directory containing the LAPACK .lib file in the list of library directories (Tools -> Options -> Projects and Solutions -> VC++ Directories -> Library Files) but forgot that I also had to add it to the "Additional Dependencies" under Project -> (Project Name) Properties -> Linker -> Input.
I had the same problem, but I solved it as follows:
- download and extract the LAPACK (LIB+DLL) and BLASS (LIB+DLL)from victor's site,
- Add the LAPACK and BLASS paths to linker search directories for example `Project->Build Options->Search Directories->Linker' in Code::Blocks,
- Add lapack_win32.lib to Linker Settings,
- Uncomment `#define ARMA_USE_LAPACK' in [Armadillo PATH]/include/armadillo_bits/config.hpp
来源：https://stackoverflow.com/questions/2324362/why-do-i-get-errors-installing-precompiled-versions-of-lapack-on-windows