MSBuild 无法使用 Bcl 相关库构建网站

Question

I have 2 projects (.Net 4.0)

• A class library (DataProvider)
  • Add reference to Bcl.Async library (via nuget)
  • Provide some async methods
• A web site (SampleSite)
  • Reference to "DataProvider"

The problem:

• When I build with Visual studio, everything is fine (I use VS 2017 Community)
• When try with MSBuild (MSBuild /target:rebuild /p:Configuration=Release /m:4), I get this warning "..\\WebSite1_1_.metaproj" (Rebuild target) (2) -> ..\\WebSite1_1_.metaproj : warning MSB3268: The primary reference "...\\WebSite1\\DataProvider\\bin\\Debug\\DataProvider.dll" could not be resolved because it has an indirect dependency on the framework assembly "System.Runtime, Version=1.5.11.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" which could not be resolved in the currently targeted framework. ".NETFramework,Version=v4.0". To resolve this problem, either remove the reference "...\\WebSite1\\DataProvider\\bin\\Debug\\DataProvider.dll" or retarget your application to a framework version which contains "System.Runtime, Version=1.5.11.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"."
• The latest DataProvider dll won't be copied to the Bin folder of "SampleSite", if I use some thing new from DataProvider I will get error (build fail)

I have searched around, including StackOverFlow. But I can't find anything related to my scenario.

I tried:

• Update app.config/web.config
• Copy BCL dlls to .Net 4.0 references assemblies folder
• Read through this ( https://blogs.msdn.microsoft.com/bclteam/p/asynctargetingpackkb/ ) but can't find any way to solve my issue

(no code for this question)

My expectation:

• I can use MSBuild or something automatically to solve this problem (because this issue is happened on my build server, automatically)

Update images

• Solution
• Just added new property to DataProvider:
• Use it normally on Website:
• MSBuild output:
• DataProvider project:

If I Right-Click on "WebSite2" -> Build web site, everything will be fine. But I want to use msbuild for automation job

Answer 1

I can now reproduce same issue in my machine(details see #4594), since it has some difference from #5993 , I report it in msbuild instead of dotnet cli . Issue reported to Msbuild 4594 .

And a workaround which can work in command-line is to use devenv commands.

But it requires us to install VS in build machine, then we can use devenv command like:

Use the -Rebuild switch can works well like what it behaves in VS. See Remark1 .

In my opinion, if we build this specific solution in vs, it may make more actions behind than single msbuild.exe does. And that's why it works well in vs but not msbuild command-line.

So if we need to automatically build this particular website in build server, we can try to use devenv command.(To see build output,it seems using devenv.com is better than using devenv.exe , see this )

Hope it makes some help and let's track the issue in 4594.