System.DllNotFoundException: libc

qqq-tech commented 4 years ago

Installed product versions

Visual Studio: 2017 community
This extension: 1.5.2

Description

when i run remote debuuger, i can't run program. because of the error below.

System.DllNotFoundException: libc

Steps to recreate

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Current behavior

Explain what it's doing and why it's wrong

Expected behavior

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techcap commented 4 years ago

Please check with the Hello World.

qqq-tech commented 4 years ago

I found out that we need to set the DISPLAY environment variable in the gui program. How can I set it up?

techcap commented 4 years ago

I tested only on Console Application. Could you share the detail information for UI application?

qqq-tech commented 4 years ago

It is a common winform program with one text label(.NET 4.6) and I run it on Raspberry Pi 3 B+.

I checked th same error from remote debugger when there was no DISPLAY environment in the ssh terminal. so I want to test it by applying the DISPLAY environment.

nub1604 commented 4 years ago

Today, I've got this problem too, but in a Display Environment.

Hardware

Raspberry Pi 3 B+

Installed product versions

Ubuntu Mate
Visual Studio: 2017 community
Extension: 1.5.2
Remote Server: 1.4 - 1.5.2 (see workaround below)

Project Information

WinForms Project

Exception on remote debugging:

Unhandled Exception: System.TypeInitializationException: The type initializer for 'System.Windows.Forms.WindowsFormsSynchronizationContext' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Windows.Forms.ThemeEngine' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Windows.Forms.ThemeWin32Classic' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Drawing.KnownColors' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Drawing.GDIPlus' threw an exception. ---> System.DllNotFoundException: libc at (wrapper managed-to-native) System.Drawing.GDIPlus.uname(intptr) at System.Drawing.GDIPlus..cctor () [0x0006e] in <2bb3052119444fb7807d658e27511cb1>:0 --- End of inner exception stack trace --- at System.Drawing.KnownColors..cctor () [0x0001a] in <2bb3052119444fb7807d658e27511cb1>:0 --- End of inner exception stack trace ---

Workaround I've tried some older releases and I found that the Server Release 1.30 works fine in this case

techcap commented 4 years ago

I found reproducing step. It looks like the problem related to linux terminal or mono. I need to figure out.

BryanCrotaz commented 4 years ago

You can reproduce with

using System;

namespace TestConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World");
        }
    }
}

It can't find System.Native

mono 6.8.0.123 on Pi 3B apt-get install mono-complete

R10Rasmus commented 4 years ago

I get "System.DllNotFoundException: libc..." if I remote debug my program on raspberry pi zero. I do not get this error when I run it local on the raspberry pi zero.

I get the error, when I use System.Device.Gpio functions, which needs libc installed.

karpatidaniel commented 2 years ago

I think I had similar issue:

MonoRemoteDebugger.Server v1.5.2
2022-01-24 20:47:56.1172|TRACE|MonoRemoteDebugger.SharedLib.Server.MonoUtils|Platform=Unix, GetMonoPath=mono, GetMonoXsp4=xsp4, GetPdb2MdbPath=pdb2mdb
Mono pdb to mdb debug symbol store converter
Usage: pdb2mdb assembly
2022-01-24 20:47:56.3011|TRACE|MonoRemoteDebugger.SharedLib.Server.MonoDebugServer|Start announcing
2022-01-24 20:47:56.4050|INFO|MonoRemoteDebugger.SharedLib.Server.MonoDebugServer|Waiting for client
2022-01-24 20:48:06.1496|INFO|MonoRemoteDebugger.SharedLib.Server.MonoDebugServer|Accepted client: ****:****
2022-01-24 20:48:06.1828|TRACE|MonoRemoteDebugger.SharedLib.Server.ClientSession|New Session from ****
2022-01-24 20:48:06.5476|INFO|MonoRemoteDebugger.SharedLib.Server.ClientSession|DebugLastContent-Message received
2022-01-24 20:48:06.5499|TRACE|MonoRemoteDebugger.SharedLib.Server.ClientSession|Check if content is already available from ****: /home/pi/MonoRemoteDebugger.Server/Temp/F8B93E30DFBF651B1499EA03ADF73919F3820CA9DAF20374DA24B92FBAA9A92D

Unhandled Exception:
System.TypeInitializationException: The type initializer for 'System.Windows.Forms.XplatUI' threw an exception. ---> System.DllNotFoundException: libc assembly:<unknown assembly> type:<unknown type> member:(null)
  at (wrapper managed-to-native) System.Windows.Forms.XplatUI.uname(intptr)
  at System.Windows.Forms.XplatUI..cctor () [0x0008e] in <6d635ac3dc1c4424ad385ded79f1e868>:0 
   --- End of inner exception stack trace ---
  at System.Windows.Forms.Application.EnableVisualStyles () [0x00006] in <6d635ac3dc1c4424ad385ded79f1e868>:0

Then I rolled back to version 1.3.0 and no issues further.

techl / MonoRemoteDebugger