--- a/make/lib/Lib-jdk.attach.gmk	Thu Apr 26 15:37:22 2018 +0200
+++ b/make/lib/Lib-jdk.attach.gmk	Thu Apr 26 15:52:17 2018 +0200
@@ -39,8 +39,6 @@
     OPTIMIZATION := LOW, \
     CFLAGS := $(CFLAGS_JDKLIB) $(LIBATTACH_CFLAGS), \
     CFLAGS_windows := /Gy, \
-    HEADER_FLAGS := \
-        -I$(call FindHeaderDirForModule, $(MODULE)), \
     LDFLAGS := $(LDFLAGS_JDKLIB) \
         $(call SET_SHARED_LIBRARY_ORIGIN), \
     LIBS := $(JDKLIB_LIBS), \