How do I disable warnings for a static framework in Xcode?

How do I disable warnings for a static framework in Xcode?

I'd like to build my Xcode project with -Weverything.  Unfortunately my project uses the opencv2.framework (built as a static framework for iOS), and the header files for that framework are not -Weverything clean.
When using clang from the command line, I can use the -isystem flag to specify system header files that should be ignored for compiler warnings.  Is there a similar feature for frameworks?  And if so, how do access it from Xcode?

Solutions/Answers:

Answer 1:

As for me most of warnings occurred by documentation comments. So I go Project -> Build Settings and set Documentation Comments value to No. It hides all warnings also from static frameworks.

References

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