[Dune] Dune on cygwin

[Christoph Grüninger]

Hi Ganesh,
great match, I don't know much about Cygwin and Fortran. My ideas are:

- Update the file in dune-common cmake/modules/LanguageSupport.cmake to
the latest version. If you use Git, updating the releases/2.3 is enough
as I just backported the file update. If you use the tarball, download
the file from [1] and replace it in your dune-common.

- Try disabling Fortan. Maybe this can be done with a CMake flag, but I
am not aware of the actual flag. Simply comment the relevant lines (all
these lines should have a # at the beginning of the line):

# optional Fortran support
  include(LanguageSupport)
  workaround_9220(Fortran Fortran_Works)
  if(Fortran_Works)
    enable_language(Fortran OPTIONAL)
  endif(Fortran_Works)

in dune-common's file cmake/modules/DuneMacros.cmake. This will also
disable some linear solver libraries, but should be good enough to work
with Dune anyway.

Bye
Christoph

[1]
> http://cgit.dune-project.org/repositories/dune-common/plain/cmake/modules/LanguageSupport.cmake?h=releases/2.3



-- 
GDB does hate your application, expresses its contempt through the
design of its command-line interface.   -- Tom Tromey, FOSDEM 2014

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