The macOS GUI app needs the same OTHER_LDFLAGS as the iOS app to link the iroh staticlib: Network (netwatch nw_* symbols) + CoreFoundation/Foundation/objc (objc2 bindings) + iconv. With this it builds against the iroh core like the agent and the iOS app do. Verified: BUILD SUCCEEDED for macOS arm64. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>