After this commit you should re-configure qgis, make clean in qgis/helpviewer then build as normal.
git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@4266 c8812cc2-4d05-0410-92ff-de0c093fc19c
Changes to helpviewer classes to allow compilation under Qt 4.0.1
Works on Linux; untested on other platforms.
git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@4252 c8812cc2-4d05-0410-92ff-de0c093fc19c