MSBuild无法从导入的项目中运行BuildDependsOn任务

我有一个导入的MSBuild项目(appconfig.transformation.targets)，该项目定义了一些任务并将其放在BuildDependsOn属性中.我已将此文件放在解决方案的*文件夹中(Projects \ LibrariesSolution \ appconfig.transformation.targets):

I have an imported MSBuild project (appconfig.transformation.targets) that defines some tasks and puts them in the BuildDependsOn property. I've placed this file in the top level folder for a solution (Projects\LibrariesSolution\appconfig.transformation.targets):

<PropertyGroup>
  <BuildDependsOn>
    TransformWebConfig;
    OverrideAppConfigWithTargetPath;
    $(BuildDependsOn);
    CopyTransformedConfig
  </BuildDependsOn>
</PropertyGroup>
<Import Project="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v10.0\Web\Microsoft.Web.Publishing.targets" />

我将此项目导入子文件夹中解决方案内的每个csproj文件.因此，Projects \ LibrariesSolution \ Project1 \ Project1.csproj具有以下内容:

I import this project in each csproj file inside the solution in subfolders. So Projects\LibrariesSolution\Project1\Project1.csproj has something like this:

<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="$(MSBuildExtensionsPath)\MSBuildCommunityTasks\MSBuild.Community.Tasks.Targets"/>
  <Import Project="..\appconfig.transformation.targets" />
  ... the rest of the csproj stuff ...

我像这样启动构建:

cd LibrariesSolution
c:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /t:Clean /p:Configuration=Release Project1\Project1.csproj
c:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /t:Build /p:Configuration=Release Project1\Project1.csproj

但是BuildDependsOn中列出的目标似乎没有被调用.当然，输出太冗长而无法在此处显示，但是"TransformWebConfig"不会出现在输出中的任何位置.没有显示错误.有什么事吗我应该怎么做才能进一步排除故障?

But the targets listed in BuildDependsOn do not appear to be called. Of course the output is way too verbose to show here, but "TransformWebConfig" does not appear anywhere in the output. No errors are shown. What could be wrong? What should I do to troubleshoot the process further?