AppRTCMobile links against framework target.

webrtc/sdk/BUILD.gn

Index: webrtc/sdk/BUILD.gn
diff --git a/webrtc/sdk/BUILD.gn b/webrtc/sdk/BUILD.gn
index 9f3ccc6b7d1f604826894671d6f83378553f5d80..3e44f9b4a33c4a3d569369e970f9a16056e8e707 100644
--- a/webrtc/sdk/BUILD.gn
+++ b/webrtc/sdk/BUILD.gn
@@ -317,7 +317,11 @@ if (is_ios || is_mac) {
         public_headers += [ "objc/Framework/Headers/WebRTC/RTCFileLogger.h" ]
       }
 
-      ldflags = [ "-all_load" ]
+      ldflags = [
+        "-all_load",
+        "-install_name",

[daniela-webrtc, 2017/01/26 07:44:24]

I'm not familiar with this flag. What is it suppose to do?

[kthelgason, 2017/01/26 08:31:48]

In short, it has to do with how macOS loads dynamic libraries. Dylibs have a
load command that specifies their install_name, and this is what the application
that links against them will look for when loading them at runtime. The
application also has a load command specifying it's @rpath, where it will look
for libraries to load.

+        "@rpath/$output_name.framework/$output_name",
+      ]
 
       deps = [
         ":rtc_sdk_peerconnection_objc",