System.Drawing单声道故障调试

Question

根据有关mono-test-install结果失败的答案 ，我将以下内容放在test.cs ：

using System;
using System.Drawing;

class X { 
    static void Main ()
    {
        Bitmap b = new Bitmap (100, 100);
    }
}

然后跑了

mcs -pkg:dotnet test.cs

输出：

test.cs（7,16）：警告CS0219：变量“b”已分配，但其值从未使用编译成功 - 1个警告

然后运行生成的exe：

mono test.exe

输出：

Unhandled Exception:
System.TypeInitializationException: An exception was thrown by the type initializer for System.Drawing.GDIPlus ---> System.DllNotFoundException: /usr/local/lib/libgdiplus.so
  at (wrapper managed-to-native) System.Drawing.GDIPlus:GdiplusStartup (ulong&,System.Drawing.GdiplusStartupInput&,System.Drawing.GdiplusStartupOutput&)
  at System.Drawing.GDIPlus..cctor () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Drawing.Bitmap..ctor (Int32 width, Int32 height, PixelFormat format) [0x00000] in <filename unknown>:0 
  at System.Drawing.Bitmap..ctor (Int32 width, Int32 height) [0x00000] in <filename unknown>:0 
  at (wrapper remoting-invoke-with-check) System.Drawing.Bitmap:.ctor (int,int)
  at X.Main () [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeInitializationException: An exception was thrown by the type initializer for System.Drawing.GDIPlus ---> System.DllNotFoundException: /usr/local/lib/libgdiplus.so
  at (wrapper managed-to-native) System.Drawing.GDIPlus:GdiplusStartup (ulong&,System.Drawing.GdiplusStartupInput&,System.Drawing.GdiplusStartupOutput&)
  at System.Drawing.GDIPlus..cctor () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Drawing.Bitmap..ctor (Int32 width, Int32 height, PixelFormat format) [0x00000] in <filename unknown>:0 
  at System.Drawing.Bitmap..ctor (Int32 width, Int32 height) [0x00000] in <filename unknown>:0 
  at (wrapper remoting-invoke-with-check) System.Drawing.Bitmap:.ctor (int,int)
  at X.Main () [0x00000] in <filename unknown>:0 

忽略这个是安全的还是我应该调试NotFoundException: /usr/local/lib/libgdiplus.so行NotFoundException: /usr/local/lib/libgdiplus.so next？

Answer 1

谢谢Jon，我刚刚找到那个页面，虽然我没有逐字逐句，但我把符号链接放在：

sudo ln -s /usr/lib/libgdiplus.so /usr/local/lib/libgdiplus.so

这解决了错误，现在mono-test-install返回：

你有一个工作System.Drawing设置

除语法问题外，还应该解决。