Hi every body

I tried to compile the last* version of lyx2 ( beta), I always got the error :

* The following problems have been detected by configure.

**** Please check the messages below before running 'make'.

**** (see the section 'Problems' in the INSTALL file)

** qt 4 library not found !


I am using debian 6.0,* I have installed almost all packages relate to qt4 ,
here is the list ( sorry it is long)




dpkg* -S** libqt4 | awk '{print $1}'
*
libqt4-assistant
libqt4-core
libqt4-dbus
libqt4-designer
libqt4-dev
libqt4-gui
libqt4-help
libqt4-multimedia
libqt4-network
libqt4-opengl


libqt4-opengl-dev
libqt4-qt3support
libqt4-script
libqt4-scripttools
libqt4-sql
libqt4-sql-mysql
libqt4-sql-sqlite
libqt4-svg
libqt4-test
libqt4-webkit
libqt4-xml
libqt4-xmlpatterns




what is missing
thanks for help
regards