diff -ur ld64-450.3/src/ld/Options.cpp ld64-450.3+iOS/src/ld/Options.cpp
--- ld64-450.3/src/ld/Options.cpp	2019-04-09 13:33:08.000000000 -1000
+++ ld64-450.3+iOS/src/ld/Options.cpp	2019-12-19 16:59:45.000000000 -1000
@@ -852,6 +852,8 @@
 			fTAPIFiles.emplace_back(interface, path, name.c_str());
 		}
 	}
+#else
+#error WHERE IS MY TAPI!
 #endif
 }