find_package(Qt6 REQUIRED COMPONENTS Widgets)
if (NOT Qt6_FOUND)
    message(FATAL_ERROR "Qt 6 is unavailable. To compile with Qt 5 use -DWITH_QT6=OFF.")
endif()
message(STATUS "Building with Qt 6.")

include_directories(${Qt6Gui_PRIVATE_INCLUDE_DIRS})
target_link_libraries(${bin} Qt6::Widgets)

qt6_wrap_cpp(${bin}_mocced ${${bin}_moc})
target_sources(${bin} PRIVATE ${${bin}_mocced})

set(${bin}_pkg_config_requires ${${bin}_pkg_config_requires} Qt6)