[Mono-list] How to build against NUnit?

[Jason Perkins]

Apologies if this has been answered before -- I was able to find other
people asking in the archives, but no one answering.

I am trying to make the switch from MS .NET to Linux and Mono. I have
created a simple project and a Makefile, all good. But I can't figure
out how to add a reference to the NUnit assemblies. I thought adding
`-r:nunit.framework.dll` would do it, but I get the "CS0006: Cannot
find assembly" error.

The nunit.framework assembly is in the GAC. I realize that you can't
build against the GAC, but how should I set up my makefile so it will
build against the right NUnit if I distribute my sources? Do I have to
include a copy of NUnit in the source tree? Shouldn't this assembly be
stored with all the other Mono assemblies so they can be referenced
normally?

Help much appreciated,

Jason