[Bug] The item "obj\Debug\GitVersionInformation.g.cs" was specified more than once in the "Sources" parameter

[riksking]

Hello.

Describe the bug
I have C# project on .Net Framework 4.7.2.
I upgrade nuget from
<package id="GitVersionTask" version="5.0.1" targetFramework="net472" developmentDependency="true" />
to
<package id="GitVersionTask" version="5.2.4" targetFramework="net472" developmentDependency="true" />

When build I got this error:

The item "obj\Debug\GitVersionInformation.g.cs" was specified more than once in the "Sources" parameter. Duplicate items are not supported by the "Sources" parameter.
C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Current\Bin\Roslyn\Microsoft.CSharp.Core.targets 59

I have another 33 projects (.Net Framework and .Net Core and .Net Standard) in this solution and all other projects build OK.

Any suggesions what's happen and how fix this?

My Environment

Operating System Windows 10
Visual Studio 16.5.3

[prantzos]

I am having the same issue as well. I tried to figure out what is different about this one project and the "CoreCompile" task fails with this error. Maybe resource files are to blame. On line 119 in "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\Roslyn\Microsoft.CSharp.Core.targets" the "Sources" parameter take a "Compile" parameter, and the "Csc" task (which fails too) has a condition "_CoreCompileResourceInputs.WithCulture != true".. I removed the resources and the condition, but I got the same error..

[marcus-sonestedt]

FWIW, I get the same on the ServoPidControl project in my repo here: marcus-sonestedt/ArduinoServoPID@a169142

1>C:\dev\ArduinoServoPID\packages\GitVersionTask.5.2.4\build\GitVersionTask.targets(19,9): warning : File contains assembly version attributes which conflict with the attributes generated by GitVersion obj\Release\AssemblyInfo.g.cs
1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Current\Bin\Roslyn\Microsoft.CSharp.Core.targets(59,5): error MSB3105: The item "obj\Release\GitVersionInformation.g.cs" was specified more than once in the "Sources" parameter.  Duplicate items are not supported by the "Sources" parameter.

[arturcic]

@riksking I have tried to reproduce this issue like this:
I created a brand new console project targeting .net framework 4.7.2, added GitVersionTask version 5.0.1 as you described to packages.config (the old way of referencing nuget packages).

I performed several times build and in teh obj\Debug folder I saw several AssemblyInfo{random}.cs files basically on every build it was generating one. Also there was GitVersionInformation{random}.cs

The build was successful

Then I upgraded to latest 5.3.2 verison and it was still building, but now there is only one AssemblyInfo.g.s and one GitVersionInformation.g.s file that keeps changing if there are more commits. The old files were there (with {random}) but build was still succesful.

I then remove obj and bin folder and tried again to build, and still no issues to build.

As far as I know we recently changed the way AssemblyInfo and GitVersionInformation is created, no random names so I would suggest cleaning up obj and bin folder and see if this helps. There was no way for me to repro this issue. If you can provide more details we can see what is the issue, for now closing the issue as I was not able to reproduce.

[riksking]

That's what I see in "obj\Debug"

I'm remove "bin" and "obj" and rebuild project several times, but got same error.

Can you tell me what information to provide for error localization?

Some details about my projects:
I have two project (only these two relate to the problem in my opinion) "Common" and "Common.UI".
Both in .net Framework 4.7.2, and Class Library type

"Common.UI" have ProjectReference to "Common". And both have GitversionTask nuget package.

Also, I have AssemblyInfo.cs in each project and SharedAssemblyInfo.cs reference as a link

<Link>Properties\SharedAssemblyInfo.cs</Link>

AssemblyInfo.cs
[assembly: AssemblyTitle("Common.UI")]

SharedAssemblyInfo.cs

[assembly: AssemblyCompany("asdasdasd")]
[assembly: AssemblyProduct("asdasd")]
[assembly: AssemblyCopyright("Copyright ")]
[assembly: ComVisible(false)]

"Common" builds fine, but "Common.UI" build with error.

P.S. I try reproduce in new solution with same structure, but everything went well.
I do not know what could lead to such an error, but it is((

[arturcic]

I tried myself to reproduce the same structure - 2 projects with AssemblyInfo containing only the AssemblyTitle, and each using a SharedAssemblyInfo that is included as link wi the same content as you provided.

Initially install version 5.0.1 - build ok, then 5.3.2 - build ok. So I can't reproduce unfortunatelly. SO I will not continue working on this bug as I don't have a way to reproduce.

[prantzos]

I can verify that version 5.2.4 and the latest 5.3.2 that I just tried today, still have the same issue. BUT I tried 5.0.1 that was mentioned here and in my case it works and does not produce this error.
In my case too the project that is not building is a class library targeting 4.7.2

It has dependencies on WPF though which all the other projects that DO successfully build do not. I believe in both @riksking and in my case the UI projects have the issue and not the rest. Maybe this is a clue that can help @arturcic ? In your test you created an empty project. All of the library projects work just fine in our case as well, except when the library has WPF dependencies and in my case some resource files too.

I will be more than glad to answer question so you can pinpoint the problem!

PS: In all my tests I delete bin and obj folders from the whole solution.

[arturcic]

@prantzos do you think you can create a sample project/repo with the issue you described having a dependency on WPF and share it with us?

[prantzos]

Sure @arturcic I will create a new sample project with the same dependencies as the one that is not building and will share it.

[prantzos]

I copied 2 projects from the solution, removing all code but keeping as many dependencies possible. Sadly by doing so and trying both versions 5.0.1 and 5.3.2 in the new solution, it does not break anymore and it builds successfully. Which means I need to spend some more time to pinpoint where this breaks. :-)

Something that I did notice when updating from 5.0.1 to a newer 5.3.2, is that I get this error:

The result "" of evaluating the value "$(GitVersionAssemblyFile)" of the "AssemblyFile" attribute in element <UsingTask> is not valid. C:\My\Workspaces\zivver\zivver-officeplugin\packages\GitVersionTask.5.0.1\build\GitVersionTask.targets

GitVersionAssemblyFile seems to be set as an empty string, which appears that none of the conditions were met in GitVersionTask.props, which is weird..

Condition="$(GitVersionAssemblyFile) == '' And '$(MSBuildRuntimeType)' != 'Core'" Condition="$(GitVersionAssemblyFile) == '' And '$(MSBuildRuntimeType)' == 'Core'"