.net - 尝试在 Linux 上将 Mpir.NET 与 F# 一起使用

Question

我想在 Ubuntu 18.04 上使用 Mpir.NET 和 F# (4.5)，在命令行上使用 dotnet。不成功。如果有更简单的方法在 F# linux 上使用 Mpir.NET，请告知。

遵循 dotnet 说明
https://docs.microsoft.com/en-us/dotnet/fsharp/get-started/get-started-command-line .
使用 Newtonsoft.Json 包的示例项目运行良好
当我构建一个项目来测试 Mpir.NET 时，我收到如下所述的错误。

dotnet new sln -o MpirProj
dotnet new console -lang F# -o src/App

将 src/App/Program.fs 替换为 Mpir.NET 文档中的程序:

open Mpir.NET

let a = 756749075976907490175905790287846502134Z
let b = 529134916478965674697197076070175107505Z
let c = a*b 
printfn "%O" c

 dotnet add src/App/App.fsproj package Mpir.NET

我收到以下信息/警告消息:

warn : Package 'Mpir.NET 0.4.0' was restored using '.NETFramework,Version=v4.6.1' instead of the project target framework '.NETCoreApp,Version=v2.1'. This package may not be fully compatible with your project. info : Package 'Mpir.NET' is compatible with all the specified frameworks in project 'src/App/App.fsproj'. info : PackageReference for package 'Mpir.NET' version '0.4.0' added to file '/home/doug/f#favs/MpirProj/src/App/App.fsproj'.

dotnet sln add src/App/App.fsproj

生成的 App.fsproj 文件是:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp2.1</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <Compile Include="Program.fs" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Mpir.NET" Version="0.4.0" />
  </ItemGroup>

</Project>

做构建

dotnet build

消息

/home/doug/f#favs/MpirProj/src/App/App.fsproj : warning NU1701: Package 'Mpir.NET 0.4.0' was restored using '.NETFramework,Version=v4.6.1' instead of the project target framework '.NETCoreApp,Version=v2.1'. This package may not be fully compatible with your project. App -> /home/doug/f#favs/MpirProj/src/App/bin/Debug/netcoreapp2.1/App.dll

Build succeeded.

当我运行时，请参阅下面的错误消息

~/f#favs/MpirProj/src/App$ dotnet run

消息

/home/doug/f#favs/MpirProj/src/App/App.fsproj : warning NU1701: Package 'Mpir.NET 0.4.0' was restored using '.NETFramework,Version=v4.6.1' instead of the project target framework '.NETCoreApp,Version=v2.1'. This package may not be fully compatible with your project. /home/doug/f#favs/MpirProj/src/App/App.fsproj : warning NU1701: Package 'Mpir.NET 0.4.0' was restored using '.NETFramework,Version=v4.6.1' instead of the project target framework '.NETCoreApp,Version=v2.1'. This package may not be fully compatible with your project.

Unhandled Exception: System.TypeInitializationException: The type initializer for 'Mpir.NET.mpir' threw an exception. ---> System.Exception: MPIR: can't determine path to the xmpir.so at Mpir.NET.mpir.LocateLibrary(String name) at Mpir.NET.mpir.GetXMPIRLibraryPath() at Mpir.NET.mpir.initialize_hxmpir() at Mpir.NET.mpir..cctor() --- End of inner exception stack trace --- at Mpir.NET.mpir.mpz_init_set_str(String str, UInt32 _base) at Mpir.NET.NumericLiteralZ.FromString(String s) at .$Program.main@() in /home/doug/f#favs/MpirProj/src/App/Program.fs:line 3

Answer 1

您看到此问题是因为该程序包适用于 .NET Framework，但您是在 Ubuntu 上的 .NET Core 上构建和运行的。引用 .NET Framework .dll 以实现兼容性仅适用于 Windows(如果它在其他地方也适用，那基本上只是巧合)。

我建议请求更新包以支持 .NET Core，或者找到与 .NET Core 兼容的替代方案。