EGL demos not installed
install: true
is not specified for all EGL-OpenGL demos except eglinfo
.
Arch Linux works around this by manually copying the demos:
# add missing egl files
install -m 0755 build/src/egl/opengl/{eglgears_wayland,eglgears_x11,eglkms,egltri_wayland,egltri_x11,peglgears,xeglgears,xeglthreads} "${pkgdir}/usr/bin/" |