phantomjs : errors when trying to upgrade to 1.6

Please help if someone knows how to deal with following class of errors:

webpage.h:49:1: error: expected class-name before '{' token

Portion of file around where above error comes:

 41 class Config;
 42 class CustomPage;
 43 class WebpageCallbacks;
 44 class NetworkAccessManager;
 45 class QWebInspector;
 46 class Phantom;
 47 
 48 class WebPage: public REPLCompletable, public QWebFrame::PrintCallback
 49 {
 50     Q_OBJECT


Complete trace:

libtool --silent --mode=compile c++ -c -O2 -I/usr/pkg/include
-I/usr/include -I/usr/pkg/qt4/include -I/usr/pkg/include/freetype2
-DQ_TRAILING_DIR_SEP -D_REENTRANT -DHAVE_CONFIG_H -DHAVE_FCNTL_H
-DHAVE_STDARG_H -DHAVE_STDINT_H -DHAVE_UNISTD_H -DUSE_UTF8 -DQT_NO_DEBUG
-DQT_WEBKIT_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB
-I/usr/pkg/qt4/mkspecs/netbsd-g++ -I. -I/usr/pkg/qt4/include/QtCore
-I/usr/pkg/qt4/include/QtNetwork -I/usr/pkg/qt4/include/QtGui
-I/usr/pkg/qt4/include/QtWebKit -I/usr/pkg/qt4/include -Igif -Imongoose
-Ilinenoise/src -I. -I/usr/pkg/include -o phantom.lo phantom.cpp
In file included from phantom.cpp:42:0:
webpage.h:49:1: error: expected class-name before '{' token
phantom.cpp: In member function 'void Phantom::onInitialized()':
phantom.cpp:318:5: error: no matching function for call to
'QWebFrame::evaluateJavaScript(QString, QString)'
/usr/pkgsrc/wip/phantomjs/work/.buildlink/qt4/include/QtWebKit/qwebframe.h:203:14:
note: candidate is: QVariant QWebFrame::evaluateJavaScript(const QString&)
*** [phantom.lo] Error code 1


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