You'd don't have to have glfw, qt and wx all at once, you can select
which variant you want built.
Python support is also make fully optional
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
It's split into:
- A generic "base" sink that handles pretty much everything except
managing a GL context and getting the UI interaction for it
- The GLFW specific part
This is preparation for for WX and QT widget implementations of a
fosphor sink.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>