[Dune] alugrid+ug with cmake

[Carsten Gräser]

Am 09.05.2014 10:44, schrieb Carsten Gräser:
[...]

>> I fixed the summary for UG.
>> Please give the current master another try.
> I also found out that removing QUIET fixes this at the price of
> the warning if ug is not found. This seems to be the reason
> why you added the QUIET flag in 25f3e04.
> 
> As far as I understand (as cmake novice) after reading
> the cmake docs, the reason for the warning is that we
> don't follow the cmake philosophy when testing for ug:
> 
> If we just call find_package(FOO, 3.9.1) it would normaly
> invoke the MODULE-mode that calls FindFoo.cmake and will
> not warn if foo is not found. If there is not FindFoo.cmake
> it goes to CONFIG-mode that uses foo-config.cmake of an
> _existing_ foo. Since foo-config.cmake is part of that
> check it emits a warning if the latter is not found.
> 
> The clean solution seems to be to provide a FindUG.cmake
> that checks for presence of ug. If ug is found this one
> can use find_package(... CONFIG) do get the details from
> ug-config.cmake.
On the other hand this answer on the cmake list indicates
that this is not the desired ways (neglecting the error
if the config file is missing)

  http://www.cmake.org/pipermail/cmake/2011-April/043737.html

Carsten

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