[Webkit-unassigned] [Bug 144747] New: [CMake] Ignore warnings in system headers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=144747

            Bug ID: 144747
           Summary: [CMake] Ignore warnings in system headers
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: PC
                OS: All
            Status: NEW
          Severity: Enhancement
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcatanzaro at igalia.com

To be able to see any warnings in our code when compiling with Clang, which gives tons of warnings for problems in other projects' header files, we need to mark them as SYSTEM headers. The first parameter to include_directories() should be SYSTEM, then all warnings from headers in those directories will be suppressed, using -isystem instead of -I.

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