error

giancarlo@kubuntu:~$ cd be-shell
giancarlo@kubuntu:~/be-shell$ ./configure
Configuring... please wait
-- The C compiler identification is GNU 4.7.2
-- The CXX compiler identification is GNU 4.7.2
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Looking for Q_WS_X11
-- Looking for Q_WS_X11 - found
-- Looking for Q_WS_WIN
-- Looking for Q_WS_WIN - not found.
-- Looking for Q_WS_QWS
-- Looking for Q_WS_QWS - not found.
-- Looking for Q_WS_MAC
-- Looking for Q_WS_MAC - not found.
-- Found Qt-Version 4.8.3 (using /usr/bin/qmake)
-- Looking for XOpenDisplay in /usr/lib/i386-linux-gnu/libX11.so;/usr/lib/i386-linux-gnu/libXext.so;/usr/lib/i386-linux-gnu/libXau.so;/usr/lib/i386-linux-gnu/libXdmcp.so
-- Looking for XOpenDisplay in /usr/lib/i386-linux-gnu/libX11.so;/usr/lib/i386-linux-gnu/libXext.so;/usr/lib/i386-linux-gnu/libXau.so;/usr/lib/i386-linux-gnu/libXdmcp.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Found X11: /usr/lib/i386-linux-gnu/libX11.so
-- Looking for include file pthread.h
-- Looking for include file pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found.
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Looking for _POSIX_TIMERS
-- Looking for _POSIX_TIMERS - found
-- Found Automoc4: /usr/bin/automoc4
-- Found Perl: /usr/bin/perl (found version "5.14.2")
-- Found Phonon: /usr/include
-- Performing Test _OFFT_IS_64BIT
-- Performing Test _OFFT_IS_64BIT - Failed
-- Performing Test HAVE_FPIE_SUPPORT
-- Performing Test HAVE_FPIE_SUPPORT - Success
-- Performing Test __KDE_HAVE_W_OVERLOADED_VIRTUAL
-- Performing Test __KDE_HAVE_W_OVERLOADED_VIRTUAL - Success
-- Performing Test __KDE_HAVE_GCC_VISIBILITY
-- Performing Test __KDE_HAVE_GCC_VISIBILITY - Success
-- Found KDE 4.9 include dir: /usr/include
-- Found KDE 4.9 library dir: /usr/lib
-- Found the KDE4 kconfig_compiler preprocessor: /usr/bin/kconfig_compiler
-- Found automoc4: /usr/bin/automoc4
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
X11_Xcomposite_LIB (ADVANCED)
linked by target "be.shell" in directory /home/giancarlo/be-shell