Installation of qt using objprelink
export QTDIR=$PWD &&
cd mkspecs/linux-g++ &&
cp qmake.conf qmake.conf.bak &&
sed '/^QMAKE_LINK/s/g++/objprelink $(OBJECTS) $(OBJMOC) \&\& g++/' \
qmake.conf.bak > qmake.conf &&
cd ../.. &&
./configure -prefix /opt/qt-&qt-version; -qt-gif -system-libpng \
-system-libmng -system-zlib -system-libjpeg -no-g++-exceptions \
-thread &&
make &&
make install &&
ln -sf /opt/qt-&qt-version; /opt/qt &&
cp -r doc/man /opt/qt/doc