Delphi MSBuild Build Configurations From Command Line

I tried this with Delphi XE. It didn't work until I figured out I needed to set the environment variables referenced by the .dproj file:

SET BDS=C:\Program Files (x86)\Embarcadero\RAD Studio\8.0
SET BDSBIN=C:\Program Files (x86)\Embarcadero\RAD Studio\8.0\bin
SET BDSAPPDATABASEDIR=BDS
msbuild myproject.dproj /target:Build /p:config=Release

Now, if you want to change the build configuration you have to add the parameter
/p:config=<BUILD_CONFIG_NAME>

For example:

C:\Projects\TestDelphiApp001>msbuild /target:Build /p:config=Release

or

C:\Projects\TestDelphiApp001>msbuild /target:Build /p:config=Debug

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Copied from original "question"; note community wiki.