buildroot/package/libvpx/Config.in

config BR2_PACKAGE_LIBVPX
	bool "libvpx"
	depends on BR2_TOOLCHAIN_HAS_THREADS
	help
	  A high-quality, open video format that's freely available to
	  everyone. Supports the VP8 and VP9 formats.

	  http://webmproject.org

comment "libvpx needs a toolchain w/ threads"
	depends on !BR2_TOOLCHAIN_HAS_THREADS