Can you make cmake use standard configuration mechanism?
use fltk-config for complete paths and dependencies
Currently the path to the OpenEXR and lqt includes must
be explicitly specified, which is not needed.
Environment variables are not used such as:
CFLAGS CXXFLAGS LDFLAGS
You specify GLEW as dependency, but do not check for.
It took me a while to see how cmake accepts a variable
to point it properly to my local library path.
Otherwise the compilation run well.