[Webkit-unassigned] [Bug 100844] New: [Qt] Reduce the number of clean builds

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=100844

           Summary: [Qt] Reduce the number of clean builds
           Product: WebKit
           Version: 420+
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: Qt, QtTriaged
          Severity: Normal
          Priority: P2
         Component: New Bugs
        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/131445 build-webkit always trigger 
clean build if any Qt project file changed after the latest successful build.

I checked the history on one of our buildbot. There were 622 builds in this
2 weeks and 60 was clean build because of this change. I think clean build in
~10% of cases is too high and unnecessary.

I suggest we should do clean build if any project file changed _and_ incremental build failed.
Patch is coming soon.

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