diff --git a/core/binary.mk b/core/binary.mk
index cf47374..94e3a0f 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -32,6 +32,12 @@
   endif
 endif
 
+# Third party code has additional no-override flags.
+is_third_party :=
+ifneq ($(filter external/% hardware/% vendor/%,$(LOCAL_PATH)),)
+  is_third_party := true
+endif
+
 my_soong_problems :=
 
 # The following LOCAL_ variables will be modified in this file.
@@ -48,6 +54,10 @@
 my_cppflags := $(LOCAL_CPPFLAGS)
 my_cflags_no_override := $(GLOBAL_CLANG_CFLAGS_NO_OVERRIDE)
 my_cppflags_no_override := $(GLOBAL_CLANG_CPPFLAGS_NO_OVERRIDE)
+ifdef is_third_party
+    my_cflags_no_override += $(GLOBAL_CLANG_EXTERNAL_CFLAGS_NO_OVERRIDE)
+    my_cppflags_no_override += $(GLOBAL_CLANG_EXTERNAL_CFLAGS_NO_OVERRIDE)
+endif
 my_ldflags := $(LOCAL_LDFLAGS)
 my_ldlibs := $(LOCAL_LDLIBS)
 my_asflags := $(LOCAL_ASFLAGS)