e6cefb60f8
This makes the build more flexible when linking against prebuilt external libraries. Use existing build_* variables for libyuv and json in talk/ (already in use in webrtc/). Also make it possible to avoid building the GTK parts of the Linux build. BUG=4242 R=andrew@webrtc.org, tommi@webrtc.org Review URL: https://webrtc-codereview.appspot.com/44179005 Cr-Commit-Position: refs/heads/master@{#9087}