[cmake-developers] Patch: Don't emit warning when config file not found

[Christoph Grüninger]

Hi Brad,
please find attached a first attempt to implement OPTIONAL for
find_package. It is supposed to suppress all warnings and indicate the
negative result by a single line of output. Unfortunately, I still get a
warning and I could figure out how to simply print a message without the
warning. Could you give me some hints and comment on my patch?

Thanks
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]

Am 10.10.2016 um 14:51 schrieb Brad King:
> On 10/09/2016 03:24 PM, Christoph Grüninger wrote:
>> * or loosing the output of tests and feature summary, as both tests are QUIET.
>>
>> I'd prefer to write the error message to the CMakeError.log and reduce
>> the output to one line. I think, the current behavior must be considered
>> a bug.
> 
> The default behavior evolved over many years to satisfy many use cases and
> give people the information they need to resolve real problems.  It is not
> going to change.  However, if you'd like to propose additional options to
> these interfaces to get the behavior you want then that would be fine.
> Perhaps find_package could gain an ``OPTIONAL`` switch.  I'm not very
> familiar with feature_summary so I'm not sure what that would need off the
> top of my head.
> 
> -Brad
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