[Dune] CMAKE_GUARD for Dune modules

[Oliver Sander]

Dear masters of CMake,

I want a unit test to only build and run when dune-functions is present.  Please, what is the
appropriate CMAKE_GUARD clause for this?

Thanks,
Oliver



-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 473 bytes
Desc: OpenPGP digital signature
URL: <https://lists.dune-project.org/pipermail/dune/attachments/20160823/6ca23f3e/attachment.sig>