[Dune] problem compiling dune-grid from git repository

[Christoph Grüninger]

Hi Ed,
can you please share your version of Dune and how you invoke
dunecontrol (opts file).
I have never looked into flags.make myself, I use make 
VERBOSE=ON
but that shouldn't change your diagnostics. Actually, from 
your
email I have no clue what's going wrong.

Bye
Christoph

-- 
[..] Mathematicians are like theologians: we regard
existence as the prime attribute of what we study.
But unlike theologians, we need not always rely upon
faith alone.                      [Lawrence Evans]