Question

我是编程新手，但不是Linux新手。我最近在C＃中开始编程，我们使用Visual Studio 2015来编写应用程序，因此使用MSbuild来编译它们。但是，在家里我想用mono编译所有东西，但是当我尝试时我得到了几个错误并且它拒绝编译。这是我运行的程序：

$ xbuild Dice_Game.sln

这是stderr：

Errors:

/home/dj/programs/c#_programs/Dice_Game/Dice_Game.sln (default targets)  ->
(Build target) ->
/home/dj/programs/c#_programs/Dice_Game/Dice_Game.csproj (default     targets) ->
/usr/local/lib/mono/xbuild/12.0/bin/Microsoft.CSharp.targets     (CoreCompile target) ->

CSC: error CS0518: The predefined type `System.Object' is not defined or imported
CSC: error CS0518: The predefined type `System.ValueType' is not defined or imported
CSC: error CS0518: The predefined type `System.Attribute' is not defined or imported
CSC: error CS0518: The predefined type `System.Int32' is not defined or imported
CSC: error CS0518: The predefined type `System.UInt32' is not defined or imported
CSC: error CS0518: The predefined type `System.Int64' is not defined or imported
CSC: error CS0518: The predefined type `System.UInt64' is not defined or imported
CSC: error CS0518: The predefined type `System.Single' is not defined or imported
CSC: error CS0518: The predefined type `System.Double' is not defined or imported
CSC: error CS0518: The predefined type `System.Char' is not defined or imported
CSC: error CS0518: The predefined type `System.Int16' is not defined or imported
CSC: error CS0518: The predefined type `System.Decimal' is not defined or imported
CSC: error CS0518: The predefined type `System.Boolean' is not defined or imported
CSC: error CS0518: The predefined type `System.SByte' is not defined or imported
CSC: error CS0518: The predefined type `System.Byte' is not defined or imported
CSC: error CS0518: The predefined type `System.UInt16' is not defined or imported
CSC: error CS0518: The predefined type `System.String' is not defined or imported
CSC: error CS0518: The predefined type `System.Enum' is not defined or imported
CSC: error CS0518: The predefined type `System.Delegate' is not defined or imported
CSC: error CS0518: The predefined type `System.MulticastDelegate' is not defined or imported
CSC: error CS0518: The predefined type `System.Void' is not defined or imported
CSC: error CS0518: The predefined type `System.Array' is not defined or imported
CSC: error CS0518: The predefined type `System.Type' is not defined or imported
CSC: error CS0518: The predefined type `System.Collections.IEnumerator' is not defined or imported
CSC: error CS0518: The predefined type `System.Collections.IEnumerable' is not defined or imported
CSC: error CS0518: The predefined type `System.IDisposable' is not defined or imported
CSC: error CS0518: The predefined type `System.IntPtr' is not defined or imported
CSC: error CS0518: The predefined type `System.UIntPtr' is not defined or imported
CSC: error CS0518: The predefined type `System.RuntimeFieldHandle' is not defined or imported
CSC: error CS0518: The predefined type `System.RuntimeTypeHandle' is not defined or imported
CSC: error CS0518: The predefined type `System.Exception' is not defined or imported

 4 Warning(s)
 31 Error(s)

Time Elapsed 00:00:01.2374970

似乎我可以完成这项工作......我对Mono的经验不足以使其发挥作用。任何帮助将不胜感激。

Answer 1

请将项目的目标框架更改为.NET 4.5。

目前，Mono不支持.NET 4.5.1及更高版本。

Answer 2

把一半的头发拉到这上面。有许多方法可以安装Mono，有些方法会安装过时的版本。我记得遵循VS Code和Omnisharp的一些说明。

因此，要获得最新安装，请按照download page of mono上的说明设置apt源，然后执行：

sudo apt install --reinstall mono-complete
sudo apt upgrade

xbuild已开始工作，但表示已弃用，因此请使用msbuild。

Answer 3

在我的Ubuntu Bionic设置中，此问题已通过安装mono-reference-assemblies-*软件包进行了修复。（由于某些原因，它们未与mono-devel一起安装）

使用mono / xbuild编译VS2015应用程序时出现问题

3 个答案: