New error

ponchale@easylabs:~/polkit-qt-1/build$ cmake -DCMAKE_INSTALL_PREFIX=$KF5 -DCMAKE_PREFIX_PATH=$KF5 ..
-- Autodetecting Qt version to use
-- Using Qt 4
qmake: could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qmake': No such file or directory
CMake Error at /usr/share/cmake-3.2/Modules/FindQt4.cmake:1326 (message):
  Found unsuitable Qt version "" from NOTFOUND, this code requires Qt 4.x
Call Stack (most recent call first):
  CMakeLists.txt:71 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/ponchale/polkit-qt-1/build/CMakeFiles/CMakeOutput.log".
CMake Error: Cannot open file for write: /home/ponchale/polkit-qt-1/build/CMakeCache.txt.tmp
CMake Error: : System Error: Permission denied
CMake Error: Unable to open cache file for save. /home/ponchale/polkit-qt-1/build/CMakeCache.txt
CMake Error: : System Error: Permission denied
ponchale@easylabs:~/polkit-qt-1/build$ sudo cmake -DCMAKE_INSTALL_PREFIX=$KF5 -DCMAKE_PREFIX_PATH=$KF5 ..
-- Autodetecting Qt version to use
-- Using Qt 4
qmake: could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qmake': No such file or directory
CMake Error at /usr/share/cmake-3.2/Modules/FindQt4.cmake:1326 (message):
  Found unsuitable Qt version "" from NOTFOUND, this code requires Qt 4.x
Call Stack (most recent call first):
  CMakeLists.txt:71 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/ponchale/polkit-qt-1/build/CMakeFiles/CMakeOutput.log".