[Webkit-unassigned] [Bug 88223] New: [Qt] Fix -Werror for the buildbots

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=88223

           Summary: [Qt] Fix -Werror for the buildbots
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: Qt, QtTriaged
          Severity: Critical
          Priority: P1
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ossy at webkit.org
                CC: hausmann at webkit.org, vestbo at webkit.org


After http://trac.webkit.org/changeset/119269 
none of our buildbot uses -Werror. :-/

The problem is that qt_developer_build doesn't exist for Qt 4.8 build at all,
and our build script doesn't use -developer-build for Qt 5 builds:
https://github.com/ossy-szeged/qt5-tools (Because nobody asked we should use it.)

I tried to build a new Qt5 with -developer-build option and then build Webkit with it,
but unfortunately the WebKit build faild with the following error message:
cp: cannot create regular file `/usr/local/Trolltech/Qt5/Qt-5.0.0-r33/mkspecs/modules/qt_webkit.pri': Permission denied

I have no idea why WebKit build wants copy anything into Qt install directory,
but it isn't a good idea to let build-webkit write anything into Qt install dir.

Any idea how can we enable Werror on the bots again?
What if we enable -Werror for 4.8 builds until proper fix?

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