--- buildtools/third_party/libc++/BUILD.gn.orig	2020-07-22 17:57:09 UTC
+++ buildtools/third_party/libc++/BUILD.gn
@@ -14,7 +14,7 @@ config("config") {
     # its implementation.
     cflags += [ "-Wno-macro-redefined" ]
   } else {
-    cflags += [ "-fPIC" ]
+    cflags += [ "-fPIC", "-I%%LOCALBASE%%/include" ]
   }
 }