$ cmake -DCMAKE_BUILD_TYPE=Release .. -- The C compiler identification is GNU 4.6.3 -- The CXX compiler identification is GNU 4.6.3 -- 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 -- Found libusb: /usr/lib/x86_64-linux-gnu/libusb-1.0.so -- Checking if large (64-bit) file support is available... -- Checking if large (64-bit) file support is available - yes CMake Error at heimdall-frontend/CMakeLists.txt:11 (find_package): By not providing "FindQt5Widgets.cmake" in CMAKE_MODULE_PATH this project has asked CMake to find a package configuration file provided by "Qt5Widgets", but CMake did not find one. Could not find a package configuration file provided by "Qt5Widgets" with any of the following names: Qt5WidgetsConfig.cmake qt5widgets-config.cmake Add the installation prefix of "Qt5Widgets" to CMAKE_PREFIX_PATH or set "Qt5Widgets_DIR" to a directory containing one of the above files. If "Qt5Widgets" provides a separate development package or SDK, be sure it has been installed. -- Configuring incomplete, errors occurred!