QT5.0 Build is failing in QTwebKit build : Python Self-test Failed

[blaisesegbeaya]

While building QT 5.0, the build stops with the message:

    (set "PATH=C:\Qt\5.0.0\qtbase\..\gnuwin32\bin;%PATH%") && python C:/Qt/5

.0.0/qtwebkit/Source/WebCore/inspector/generate-inspector-protocol-version -o
generated\InspectorProtocolVersion.h inspector\Inspector.json
Self-test failedNMAKE : fatal error U1077: '(set' : return code '0x1'
Stop.
NMAKE : fatal error U1077: '(' : return code '0x2'
Stop.
NMAKE : fatal error U1077: 'cd' : return code '0x2'
Stop.
NMAKE : fatal error U1077: 'cd' : return code '0x2'
Stop.

================================
Does anybody have an idea of how to fix this?

Thank you.