error compilation lightdm-kde-git

┌─[helq]─[myArch]
└──[lightdm-kde-git %]> makepkg                                                  [2] - [Fri 1]
==> Determining latest git revision...
  -> Version found: 20130301
==> Making package: lightdm-kde-git 20130301-1 (Fri  1 Mar 22:35:41 COT 2013)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving Sources...
==> Extracting Sources...
==> Removing existing pkg/ directory...
==> Starting build()...
==> Connecting to GIT server....
Already up-to-date.
==> The local files are updated.
==> GIT checkout done or server timeout
==> Starting build...
Cloning into '/home/helq/Downloads/AUR/lightdm-kde-git/src/lightdm-kde-build'...
done.
-- 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/cc
-- Check for working C compiler: /usr/bin/cc -- 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 - not 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 5.0.1 (using /usr/bin/qmake)
-- 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
-- Found Automoc4: /usr/bin/automoc4
-- Found Perl: /usr/bin/perl (found version "5.16.2")
-- Found Phonon: /usr/include (Required is at least version "4.3.80")
-- Performing Test _OFFT_IS_64BIT
-- Performing Test _OFFT_IS_64BIT - Success
-- 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
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:
QT_QT_INCLUDE_DIR
   used as include directory in directory /home/helq/Downloads/AUR/lightdm-kde-git/src/lightdm-kde-build/build/CMakeFiles/CMakeTmp

CMake Error: Internal CMake error, TryCompile configure of cmake failed

CMake Error at /usr/share/apps/cmake/modules/FindKDE4Internal.cmake:1294 (message):
  Qt compiled without support for -fvisibility=hidden.  This will break
  plugins and linking of some applications.  Please fix your Qt installation
  (try passing --reduce-exports to configure).
Call Stack (most recent call first):
  /usr/share/cmake-2.8/Modules/FindKDE4.cmake:95 (find_package)
  CMakeLists.txt:34 (find_package)


-- Configuring incomplete, errors occurred!
==> ERROR: A failure occurred in build().
    Aborting...