qt6

ashwin@ashwin-Lenovo-Z51-70:~/build$ cmake -DCMAKE_PREFIX_PATH=/home/ashwin/build ../gcompris
-- The C compiler identification is GNU 5.4.0
-- The CXX compiler identification is GNU 5.4.0
-- 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
-- Detecting C compile features
-- Detecting C compile features - 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
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test COMPILER_SUPPORTS_CXX11
-- Performing Test COMPILER_SUPPORTS_CXX11 - Success
-- Performing Test COMPILER_SUPPORTS_CXX0X
-- Performing Test COMPILER_SUPPORTS_CXX0X - Success
CMake Error at CMakeLists.txt:89 (find_package):
  Could not find a configuration file for package "Qt5" that is compatible
  with requested version "5.6.0".

  The following configuration files were considered but not accepted:

    /home/ashwin/Qt5Config.cmake, version: unknown
    /usr/local/Qt5Config.cmake, version: unknown



-- Configuring incomplete, errors occurred!
See also "/home/ashwin/build/CMakeFiles/CMakeOutput.log".