errors during make xconfig

[Kamaraju Kusumanchi <kk288@cornell.edu>]

Hi all
   I am trying to compile a kernel 2.6.3 and whenever I do make 
xconfig, I am getting the following error. I am running debian testing. 
could you please tell me what I should do? If I do make menuconfig, then 
everything is fine.

scripts/kconfig/qconf.o(.gnu.linkonce.t._ZN16ConfigMainWindowD0Ev+0x1d): 
In function `ConfigMainWindow::~ConfigMainWindow [in-charge deleting]()':
: undefined reference to `QMainWindow::~QMainWindow [not-in-charge]()'
scripts/kconfig/qconf.o(.gnu.linkonce.r._ZTI6QGList+0x8): undefined 
reference to `typeinfo for QCollection'
scripts/kconfig/qconf.o(.gnu.linkonce.r._ZTI10ConfigView+0x8): undefined 
reference to `typeinfo for QVBox'
scripts/kconfig/qconf.o(.gnu.linkonce.r._ZTI10ConfigList+0x8): undefined 
reference to `typeinfo for QListView'
scripts/kconfig/qconf.o(.gnu.linkonce.r._ZTI10ConfigItem+0x8): undefined 
reference to `typeinfo for QListViewItem'
scripts/kconfig/qconf.o(.gnu.linkonce.r._ZTI14ConfigLineEdit+0x8): 
undefined reference to `typeinfo for QLineEdit'
scripts/kconfig/qconf.o(.gnu.linkonce.r._ZTI16ConfigMainWindow+0x8): 
undefined reference to `typeinfo for QMainWindow'
collect2: ld returned 1 exit status
make[1]: *** [scripts/kconfig/qconf] Error 1
make: *** [xconfig] Error 2

thanks in advance
raju