Prebuilt of fltk/fltk: FLTK - Fast Light Tool Kit - https://github.com/fltk/fltk - cross platform GUI development
- Modify
CMake/FLTKConfig.cmake
, setFLTK_INCLUDE_DIRS
to relative path:set (FLTK_INCLUDE_DIRS "${CMAKE_CURRENT_LIST_DIR}/../include")