nunyer@CPU1:~/linux-2.6.22-rc3$ make xconfig
  CHECK   qt
*
* Unable to find the QT3 installation. Please make sure that
* the QT3 development package is correctly installed and
* either install pkg-config or set the QTDIR environment
* variable to the correct location.
*
sed < scripts/kconfig/lkc_proto.h > scripts/kconfig/lkc_defs.h 's/P(\([^,]*\),.*/#define \1 (\*\1_p)/'
  HOSTCC  scripts/kconfig/kconfig_load.o
make[1]: *** No rule to make target `scripts/kconfig/.tmp_qtcheck', needed by `scripts/kconfig/qconf.o'.  Stop.
make: *** [xconfig] Error 2
nunyer@CPU1:~/linux-2.6.22-rc3$