DLL iOS Xamarin project doesn't build without any error in Visual Studio-CodePudding

Here is the log

Rebuild started...
1>------ Rebuild All started: Project: OxyPlot.Xamarin.iOS, Configuration: Debug Any CPU ------
2>------ Rebuild All started: Project: OxyPlot.Xamarin.Forms, Configuration: Debug Any CPU ------
Restored D:\...\MyApp\MyApp\Autofac\Autofac.csproj (in 108 ms).
1>  Executing SayHello Task to establish a connection to a Remote Server. 
1>              Properties: 
1>                  SessionId=b2c2c29378abf7c944566f76ca68a6dc43fad4b8538dd7c4bd39fd2d30164eb5, 
1>                  Addresss=192.168.10.224, 
1>                  SshPort=22, 
1>                  TcpPort=57058, 
1>                  User=dims, 
1>                  AppName=OxyPlot.Xamarin.iOS,
1>                  VisualStudioProcessId=2364,
1>                  ContinueOnDisconnected=False
2>D:\...\MyApp\OxyPlot\OxyPlot.Xamarin.Forms\PlotView.cs(42,25,42,34): warning CS0618: 'Device.OS' is obsolete: 'TargetPlatform is obsolete as of version 2.3.4. Please use RuntimePlatform instead.'
2>D:\...\MyApp\OxyPlot\OxyPlot.Xamarin.Forms\PlotView.cs(44,26,44,40): warning CS0612: 'TargetPlatform' is obsolete
2>D:\...\MyApp\OxyPlot\OxyPlot.Xamarin.Forms\PlotView.cs(48,26,48,40): warning CS0612: 'TargetPlatform' is obsolete
2>D:\...\MyApp\OxyPlot\OxyPlot.Xamarin.Forms\PlotView.cs(52,26,52,40): warning CS0612: 'TargetPlatform' is obsolete
2>D:\...\MyApp\OxyPlot\OxyPlot.Xamarin.Forms\PlotView.cs(56,26,56,40): warning CS0612: 'TargetPlatform' is obsolete
2>  OxyPlot.Xamarin.Forms -> D:\...\MyApp\OxyPlot\OxyPlot.Xamarin.Forms\bin\Debug\OxyPlot.Xamarin.Forms.dll
1>  OxyPlot.Xamarin.iOS -> D:\...\MyApp\OxyPlot\OxyPlot.Xamarin.iOS\bin\Debug\OxyPlot.Xamarin.iOS.dll
3>------ Rebuild All started: Project: OxyPlot.Xamarin.Forms.Platform.iOS, Configuration: Debug Any CPU ------
========== Rebuild All: 2 succeeded, 1 failed, 0 skipped ==========

First DLL is created, second one is not. Failed counts confirms this, but no any error reported.

How to investigate?

CodePudding user response：

Diagnostic MSBuild can contain additional information relating to package building and may contain some package deployment information.

To enable diagnostic MSBuild output within Visual Studio:

Click Tools > Options... In the left-hand tree view, select Projects and Solutions > Build and Run In the right-hand panel, set the MSBuild build output verbosity dropdown to Diagnostic Click OK Clean and rebuild your package. Diagnostic output is visible within the Output panel. To enable diagnostic MSBuild output within Visual Studio for Mac/OS X:

Click Visual Studio for Mac > Preferences... In the left-hand tree view, select Projects > Build In the right-hand panel, set the Log verbosity drop-down to Diagnostic Click OK Restart Visual Studio for Mac Clean and rebuild your package. Diagnostic output is visible within the Errors Pad (View > Pads > Errors ), by clicking the Build Output button.