Without a number of important Qt libraries (all of those with a "dev"
derivation) are not included in the bundled package, and qmake can't
find them.
Fixes#110199
Waffle works perfectly well on macOS and Windows. Because the meson
options do proper dependency checking already, we can just leave them
out. This has the additional benefit of allowing gbm, surfaceless_egl
and x11_egl supoort to be built on Linux, which are useful in
conjunction with the piglit test suite.
Dylan Baker