...yeah https://github.com/webrtc-sdk/libwebrtc?tab=readme-ov-file#modify-webrtcs-srcbuildgn-file-and-add-libwebrtc-to-groupdefault
diff --git a/BUILD.gn b/BUILD.gn
index e60d7dd0bd..b9b6acab8b 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -29,7 +29,7 @@ if (!build_with_chromium) {
   # 'ninja default' and then 'ninja all', the second build should do no work.
   group("default") {
     testonly = true
-    deps = [ ":webrtc" ]
+    deps = [ ":webrtc", "//libwebrtc" ]
     if (rtc_build_examples) {
       deps += [ "examples" ]
     }