How to suppress specific MSBuild warning

问题:

Is there any way to disable specific MSBuild warning (e.g. MSB3253) when running MSBuild from command line? My build script calls msbuild.exe much the following way:

msbuild.exe MySolution.sln /t:Rebuild /p:Configuration=Release

I've found out that I can suppress C# warnings (e.g. CS0618) using another parameter for msbuild.exe:

msbuild.exe MySolution.sln /t:Rebuild /p:Configuration=Release /p:NoWarn=0618

However, this approach doesn't work for MSBuild warnings. Maybe there is another magic property to set?

I'm using .NET 3.5 and VS2008.

回答1:

I've managed to supress the warning level with /p:WarningLevel=X

msbuild.exe MySolution.sln /t:Rebuild /p:WarningLevel=0 /p:Configuration=Release
                                      ^^^^^^^^^^^^^^^^^
Warning  
Level    Meaning
-------- -------------------------------------------
      0  Turns off emission of all warning messages.

      1  Displays severe warning messages

      2  Displays level 1 warnings plus certain, less-severe warnings, such
         as warnings about hiding class members

      3  Displays level 2 warnings plus certain, less-severe warnings, such 
         as warnings about expressions that always evaluate to true or false

      4  (the default) Displays all level 3 warnings plus informational warnings

回答2:

According to this thread in the MSDN Forum MSBuild warnings can't be suppressed.

回答3:

For MSB3253 you can just set in project file (*.csproj) that cause such warning.

  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <!-- some code goes here -->
    <ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>
        None
    </ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>
    <!-- some code goes here -->
  </PropertyGroup>

回答4:

For those Googling this now (like me): the upcoming MSBuild 15.0 (to be released with Visual Studio 2017, I presume) will finally implement the /NoWarn option to suppress specific warnings (as well as /WarnAsError to treat either specific warnings or all warnings as errors).