I have a T4 template that processes several .tt files in my project. I also have some custom classes I've defined to help with the code transformation process.
<#@ template language="C#" hostspecific="True" debug="True" #> <#@ output extension="cs" #> <#@ assembly name="System.Core.dll" #> <#@ assembly name="$(TargetDir)\MyDependency.dll" #>
This works in Visual Studio, I have a VS Macro which defines $(TargetDir) correctly.
Now, I want to perform the code generation process during my build process. I added:
<TransformOnBuild>true</TransformOnBuild> <OverwriteReadOnlyOutputFiles>true</OverwriteReadOnlyOutputFiles> <IncludeDslT4Settings>true</IncludeDslT4Settings> <ItemGroup> <T4ReferencePath Include="$(OutputPath)" /> </ItemGroup> <Import Project="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\TextTemplating\v10.0\Microsoft.TextTemplating.targets" />
My build runs, but I get:
C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\TextTemplating\v10.0\Microsoft.TextTemplating.targets (407): The host threw an exception while trying to resolve the assembly reference '$(TargetDir)\MyDependency.dll'. The transformation will not be run. The following Exception was thrown: System.IO.FileLoadException: The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047) at System.Reflection.AssemblyName.nInit(RuntimeAssembly& assembly, Boolean forIntrospection, Boolean raiseResolveEvent) at System.Reflection.AssemblyName.nInit() at Microsoft.VisualStudio.TextTemplating.GlobalAssemblyCacheHelper.GetLocation(String strongName) at Microsoft.VisualStudio.TextTemplating.Sdk.Host.GenericTextTemplatingHost.ResolveAssemblyReference(String assemblyReference) at Microsoft.VisualStudio.TextTemplating.Engine.ResolveAssemblyReferences(ITextTemplatingEngineHost host, TemplateProcessingSession session). Line=-1, Column=-1
Obviously it won't resolve
$(TargetDir) in Team build context.
I tried adding TargetDir to my build configuration's property group, to no avail. This value doens't pass through to the context of the T4 Code Generator.
I don't want to use an environment variable.
How can I set
$(TargetDir) correctly in Team Build context?
I don't see where $(OutputPath) is defined by visual studio. did you try $(TargetDir) in your item w/in your project? Then you can remove the $(TargetDir)\ from your Assembly declaration in the T4 file.
I just worked through a slew of possibilities to get something similar to work, will be doing a blog post today or tomorrow.
<ItemGroup> <T4ReferencePath Include="$(TargetDir)" /> </ItemGroup>
in your csproj, and
<#@ assembly name="MyDependency.dll" #>
in your T4 file
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