[Mono-list] Xbuild losing project reference

[Charlie Poole]

Hi All,

I have a project with a single project reference, in addition to
various references to system assemblies. It builds without any
problems under VS, MsBuild and MonoDevelop.

When I use xbuild, the generated command line doesn't include that
reference at all.

You can see the output of a build at
https://travis-ci.org/nunit/nunit-framework/jobs/35073320  I have
reproduced the same issue on my local Ubuntu system.

The project reference in nunit.engine.csproj looks like this:

    <ProjectReference Include="..\nunit.engine.api\
nunit.engine.api.csproj">
      <Project>{775FAD50-3623-4922-97C4-DFB29A8BE4C7}</Project>
      <Name>nunit.engine.api</Name>
    </ProjectReference>

Any hints welcome!

Charlie