ffmpeg3 "x11" option vs "vaapi", "vdpau" options

["John D. Baker" <jdbaker%mylinuxisp.com@localhost>]

Back in ffmpeg3/options.mk r1.7, an "x11" option was added and the
"vaapi" and "vdpau" options made conditional on the "x11" option.

I have one machine on which I do not install any X11 (neither native
nor pkgsrc/modular Xorg).  In my "/etc/mk.conf" I define:

PKG_DEFAULT_OPTIONS+= -x11

but ffmpeg3 still enables "vaapi" and "vdpau" unless I explicitly
disable them with:

PKG_OPTIONS.ffmpeg3+=-vaapi -vdpau

Even using:

PKG_OPTIONS.ffmpeg3+=-x11

doesn't disable "vaapi" or "vdpau".  I must still explicitly disable
these options to build on an X-less system.

Has anyone gotten "-x11" to turn off "vaapi" and "vdpau" for ffmpeg3
on a machine w/o any X11?

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