%bcond_with system_sqlite # system sqlite WebSQL (http://www.w3.org/TR/webdatabase/) will not work
%bcond_without system_libsrtp # system srtp (can be used if using bundled libjingle), http://bugs.gentoo.org/459932
%bcond_with system_v8 # system v8
-%bcond_without system_libvpx # system libvpx, http://crbug.com/494939
+%bcond_with system_libvpx # system libvpx, http://crbug.com/494939
%bcond_without system_yasm # system yasm
%bcond_without system_zlib # system zlib
%bcond_with tcmalloc # use tcmalloc