使用 Visual Studio 时犰狳 lapack linker 错误

Question

下面的简单程序调用 polyfit 以找到通过数据点的最佳直线。

#include <iostream>
#include <vector>
#include <armadillo>


using arma::vec;
using std::vector;

int main()
{
    vector <double> xcoords = { 7,8,9,10,11,12,13,14,15,16,17 };
    vector <double> ycoords = { 32,35,29,34,30,24,32,24,23,28,21 };
    vec x = vec(xcoords);
    vec y = vec(ycoords);
    vec p = polyfit(x, y, 2);
}


`

`` 程序编译，但失败并出现 32 linker 错误。 它们似乎都与 lapack 或 blas 有关。 现在，自述文件似乎表明预编译库 libopenblas.dll 和 libopenblas.lib 包含 BLAS 和 LAPACK，所以我应该在那里拥有我需要的所有库代码。 编译器是 Visual Studio C++ 2022 v143。

1>pf3.obj : error LNK2019: unresolved external symbol sdot_ referenced in function "double __cdecl arma::blas::dot<double>(unsigned __int64,double const *,double const *)" (??$dot@N@blas@arma@@YAN_KPEBN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol ddot_ referenced in function "double __cdecl arma::blas::dot<double>(unsigned __int64,double const *,double const *)" (??$dot@N@blas@arma@@YAN_KPEBN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol sgemv_ referenced in function "void __cdecl arma::blas::gemv<double>(char const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemv@N@blas@arma@@YAXPEBDPEBH1PEBN21212PEAN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol dgemv_ referenced in function "void __cdecl arma::blas::gemv<double>(char const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemv@N@blas@arma@@YAXPEBDPEBH1PEBN21212PEAN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol cgemv_ referenced in function "void __cdecl arma::blas::gemv<double>(char const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemv@N@blas@arma@@YAXPEBDPEBH1PEBN21212PEAN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol zgemv_ referenced in function "void __cdecl arma::blas::gemv<double>(char const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemv@N@blas@arma@@YAXPEBDPEBH1PEBN21212PEAN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol sgemm_ referenced in function "void __cdecl arma::blas::gemm<double>(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 *)" (??$gemm@N@blas@arma@@YAXPEBD0PEBH11PEBN21212PEAN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol dgemm_ referenced in function "void __cdecl arma::blas::gemm<double>(char const *,char const *,int const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemm@N@blas@arma@@YAXPEBD0PEBH11PEBN21212PEAN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol cgemm_ referenced in function "void __cdecl arma::blas::gemm<double>(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 *)" (??$gemm@N@blas@arma@@YAXPEBD0PEBH11PEBN21212PEAN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol zgemm_ referenced in function "void __cdecl arma::blas::gemm<double>(char const *,char const *,int const *,int const *,int const *,double const *,double const *,int const *,double const *,int const *,double const *,double *,int const *)" (??$gemm@N@blas@arma@@YAXPEBD0PEBH11PEBN21212PEAN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol ssyrk_ referenced in function "void __cdecl arma::blas::syrk<double>(char const *,char const *,int const *,int const *,double const *,double const *,int const *,double const *,double *,int const *)" (??$syrk@N@blas@arma@@YAXPEBD0PEBH1PEBN212PEAN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol dsyrk_ referenced in function "void __cdecl arma::blas::syrk<double>(char const *,char const *,int const *,int const *,double const *,double const *,int const *,double const *,double *,int const *)" (??$syrk@N@blas@arma@@YAXPEBD0PEBH1PEBN212PEAN1@Z)
1>pf3.obj : error LNK2019: unresolved external symbol sgeqrf_ referenced in function "void __cdecl arma::lapack::geqrf<double>(int *,int *,double *,int *,double *,double *,int *,int *)" (??$geqrf@N@lapack@arma@@YAXPEAH0PEAN01100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol dgeqrf_ referenced in function "void __cdecl arma::lapack::geqrf<double>(int *,int *,double *,int *,double *,double *,int *,int *)" (??$geqrf@N@lapack@arma@@YAXPEAH0PEAN01100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol cgeqrf_ referenced in function "void __cdecl arma::lapack::geqrf<double>(int *,int *,double *,int *,double *,double *,int *,int *)" (??$geqrf@N@lapack@arma@@YAXPEAH0PEAN01100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol zgeqrf_ referenced in function "void __cdecl arma::lapack::geqrf<double>(int *,int *,double *,int *,double *,double *,int *,int *)" (??$geqrf@N@lapack@arma@@YAXPEAH0PEAN01100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol sorgqr_ referenced in function "void __cdecl arma::lapack::orgqr<double>(int *,int *,int *,double *,int *,double *,double *,int *,int *)" (??$orgqr@N@lapack@arma@@YAXPEAH00PEAN01100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol dorgqr_ referenced in function "void __cdecl arma::lapack::orgqr<double>(int *,int *,int *,double *,int *,double *,double *,int *,int *)" (??$orgqr@N@lapack@arma@@YAXPEAH00PEAN01100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol cungqr_ referenced in function "void __cdecl arma::lapack::ungqr<double>(int *,int *,int *,double *,int *,double *,double *,int *,int *)" (??$ungqr@N@lapack@arma@@YAXPEAH00PEAN01100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol zungqr_ referenced in function "void __cdecl arma::lapack::ungqr<double>(int *,int *,int *,double *,int *,double *,double *,int *,int *)" (??$ungqr@N@lapack@arma@@YAXPEAH00PEAN01100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol sgesv_ referenced in function "void __cdecl arma::lapack::gesv<double>(int *,int *,double *,int *,int *,double *,int *,int *)" (??$gesv@N@lapack@arma@@YAXPEAH0PEAN00100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol dgesv_ referenced in function "void __cdecl arma::lapack::gesv<double>(int *,int *,double *,int *,int *,double *,int *,int *)" (??$gesv@N@lapack@arma@@YAXPEAH0PEAN00100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol cgesv_ referenced in function "void __cdecl arma::lapack::gesv<double>(int *,int *,double *,int *,int *,double *,int *,int *)" (??$gesv@N@lapack@arma@@YAXPEAH0PEAN00100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol zgesv_ referenced in function "void __cdecl arma::lapack::gesv<double>(int *,int *,double *,int *,int *,double *,int *,int *)" (??$gesv@N@lapack@arma@@YAXPEAH0PEAN00100@Z)
1>pf3.obj : error LNK2019: unresolved external symbol sposv_ referenced in function "void __cdecl arma::lapack::posv<double>(char *,int *,int *,double *,int *,double *,int *,int *)" (??$posv@N@lapack@arma@@YAXPEADPEAH1PEAN1211@Z)
1>pf3.obj : error LNK2019: unresolved external symbol dposv_ referenced in function "void __cdecl arma::lapack::posv<double>(char *,int *,int *,double *,int *,double *,int *,int *)" (??$posv@N@lapack@arma@@YAXPEADPEAH1PEAN1211@Z)
1>pf3.obj : error LNK2019: unresolved external symbol cposv_ referenced in function "void __cdecl arma::lapack::posv<double>(char *,int *,int *,double *,int *,double *,int *,int *)" (??$posv@N@lapack@arma@@YAXPEADPEAH1PEAN1211@Z)
1>pf3.obj : error LNK2019: unresolved external symbol zposv_ referenced in function "void __cdecl arma::lapack::posv<double>(char *,int *,int *,double *,int *,double *,int *,int *)" (??$posv@N@lapack@arma@@YAXPEADPEAH1PEAN1211@Z)
1>pf3.obj : error LNK2019: unresolved external symbol strtrs_ referenced in function "void __cdecl arma::lapack::trtrs<double>(char *,char *,char *,int *,int *,double const *,int *,double *,int *,int *)" (??$trtrs@N@lapack@arma@@YAXPEAD00PEAH1PEBN1PEAN11@Z)
1>pf3.obj : error LNK2019: unresolved external symbol dtrtrs_ referenced in function "void __cdecl arma::lapack::trtrs<double>(char *,char *,char *,int *,int *,double const *,int *,double *,int *,int *)" (??$trtrs@N@lapack@arma@@YAXPEAD00PEAH1PEBN1PEAN11@Z)
1>pf3.obj : error LNK2019: unresolved external symbol ctrtrs_ referenced in function "void __cdecl arma::lapack::trtrs<double>(char *,char *,char *,int *,int *,double const *,int *,double *,int *,int *)" (??$trtrs@N@lapack@arma@@YAXPEAD00PEAH1PEBN1PEAN11@Z)
1>pf3.obj : error LNK2019: unresolved external symbol ztrtrs_ referenced in function "void __cdecl arma::lapack::trtrs<double>(char *,char *,char *,int *,int *,double const *,int *,double *,int *,int *)" (??$trtrs@N@lapack@arma@@YAXPEAD00PEAH1PEBN1PEAN11@Z)
1>C:\Users\James\source\repos\pf3\x64\Debug\pf3.exe : fatal error LNK1120: 32 unresolved externals

Windows 10 中的 Visual Studio 2022 设置了以下包含和库声明：

C:\armadillo-11.2.4\include
C:\armadillo-11.2.4\examples\lib_win64

现在，令人费解的是，如果我在 example1 中插入相同的代码，这是一个调用大多数函数的工作 Visual Studio 项目，代码工作正常。 所以这意味着我的小程序设置不正确。 example1 的属性没有给我任何线索，因为一切都隐藏在一个巨大的外部依赖列表中。

我做错了什么？

我试图添加相同的外部依赖项，但无法全部找到。 当然必须有一个更直接的解决方案。

Answer 1

确保您正在使用 x64 平台进行构建。 就我而言，我正在（错误地）使用 x86 平台进行编译/链接。