[webkit-qt] WebKit, Qt and V8

[Subs Vin]

Hi,
I am evaluating the use of QtWebKit for one of our projects.

Since I read on the webkit-qt forum that QtWebkit could also be built 
using the V8 engine, I wanted to give it a try.

So, I downloaded the latest revision (Rev - 86741) from svn (svn 
checkout http://svn.webkit.org/repository/webkit/trunk) and tried 
building it with V8 on Ubuntu 10.10 - 32 bit.

(I had already built the latest version of V8 and copied the include 
files into $QTDIR/src/3rdparty/v8/include and the libv8.so to $QTDIR/lib)

I setup the environmental variables as follows -

$ export QTDIR=/usr/local/Trolltech/Qt-4.7.3
$ export PATH=$QTDIR/bin:$PATH

$ ./Tools/Scripts/build-webkit --qt --v8

The build failed with the following errors -

Project MESSAGE: Using gold linker
Project MESSAGE: Using V8 with QtScript
Project MESSAGE: Using gold linker
Project MESSAGE: Using gold linker
Project MESSAGE: Using gold linker
Project MESSAGE: Using V8 with QtScript
Project MESSAGE: Using gold linker
Project MESSAGE: Using gold linker
WARNING: DESTDIR: Cannot access directory 
'/usr/local/Trolltech/Qt-4.7.3/plugins/webkit'
../../../Source/WebCore/bindings/v8/NPV8Object.cpp: In function 
‘WebCore::WrapperTypeInfo* WebCore::npObjectTypeInfo()’:
../../../Source/WebCore/bindings/v8/NPV8Object.cpp:61: warning: missing 
initializer for member ‘WebCore::WrapperTypeInfo::parentClass’
../../../Source/WebCore/bindings/v8/ScriptControllerQt.cpp: In member 
function ‘QScriptEngine* WebCore::ScriptController::qtScriptEngine()’:
../../../Source/WebCore/bindings/v8/ScriptControllerQt.cpp:43: error: no 
match for ‘operator=’ in 
‘((WebCore::ScriptController*)this)->WebCore::ScriptController::m_qtScriptEngine 
= (operator new(8u), (<statement>, ((QScriptEngine*)<anonymous>)))’
../../../Source/JavaScriptCore/wtf/OwnPtr.h:131: note: candidates are: 
WTF::OwnPtr<T>& WTF::OwnPtr<T>::operator=(const WTF::PassOwnPtr<T>&) 
[with T = QScriptEngine]
../../../Source/JavaScriptCore/wtf/OwnPtr.h:72: note: WTF::OwnPtr<T>& 
WTF::OwnPtr<T>::operator=(std::nullptr_t) [with T = QScriptEngine]
../../../Source/JavaScriptCore/wtf/OwnPtr.h:83: note: WTF::OwnPtr<T>& 
WTF::OwnPtr<T>::operator=(const WTF::OwnPtr<T>&) [with T = QScriptEngine]
make[1]: *** [obj/release/ScriptControllerQt.o] Error 1
make: *** [sub-WebCore-make_default-ordered] Error 2

Also, the buildbot for x86-32 Linux Qt V8 
(http://www.sed.hu/webkit/qtbuildbot/builders/x86-32%20Linux%20Qt%20V8) 
has been offline since Mar 8, 2011.

I have few questions - Please could somebody answer them for me
a) How do I build QtWebkit with V8? Is there any alternative other than 
the build-webkit --qt --v8 script?
b) I see that the QtWebkit 2.2 release is coming up during June 2011, is 
V8 supported on that?
c) Is the Qt bridge working with V8 engine?

Thanks,
Vin