Msbuild: A property set in a target before CallTarget isn't set at the called target

[rainersigwald]

Example:

<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Target Name="Echo">
    <Message Importance="High"
             Text="Property Prop: $(Prop)" />
  </Target>

  <Target Name="Build">
    <PropertyGroup>
      <Prop>defined</Prop>
    </PropertyGroup>
    <CallTarget Targets="Echo" />
  </Target>
</Project>

d:\work>msbuild calltarget-property-setting.proj
Microsoft (R) Build Engine version 14.0.25420.1
Copyright (C) Microsoft Corporation. All rights reserved.

Build started 9/8/2016 4:38:12 PM.
Project "d:\work\calltarget-property-setting.proj" on node 1 (default targets).
Echo:
  Property Prop:
Done Building Project "d:\work\calltarget-property-setting.proj" (default targets).


Build succeeded.
    0 Warning(s)
    0 Error(s)

Time Elapsed 00:00:00.02

That's surprising! It certainly _seems_ to have been set correctly (and a diag log indicates that too), but it's not available in the other target.

This was pointed out by @rohit21agrawal over IM.

[jeffkl]

This has been a limitation for a while as far as I know

http://stackoverflow.com/questions/1373162/passing-property-group-value-from-one-msbuild-task-to-another

[rainersigwald]

bugs_more_than_a_decade_old++

https://blogs.msdn.microsoft.com/msbuild/2006/01/02/well-known-limitation-dynamic-items-and-properties-not-emitted-until-target-execution-completes/