[Webkit-unassigned] [Bug 138840] New: Incorrect detection of toolchain support for Cortex-A53 erratum 835769 workaround

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=138840

            Bug ID: 138840
           Summary: Incorrect detection of toolchain support for
                    Cortex-A53 erratum 835769 workaround
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: akiss at inf.u-szeged.hu
                CC: ossy at webkit.org

If the compiler already implements the workaround for the erratum but the linker still does not, the build fails with 
/usr/bin/ld: unrecognized option '--fix-cortex-a53-835769'

The current code in OptionsCommon.cmake only checks for the compilation to work but does not try to link.

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