Trolltech has just released qt4.3.4.
This solved 1/2 of the problems I have experienced. The remainder of
the problems building and installing Qwt were caused by following the
QWT directions.
Do not just type qmake as told to do in the INSTALL file. It picks
the one done for Windows.
Type qmake qwt.pro.
This reads qwtconfig.pri as an include file and then all is okay. Of
course, your PATH and QTDIR, QTINC, QTLIB variables need to point to
the correct installation directory.
I believe armed with this release and recent upgrades to both Qt and
Qwt, this will make this usable at last.
Bob