--- old/make/autoconf/buildjdk-spec.gmk.in	2018-06-04 22:08:23.519388227 +0200
+++ new/make/autoconf/buildjdk-spec.gmk.in	2018-06-04 22:08:23.091373111 +0200
@@ -75,6 +75,8 @@
 JVM_ASFLAGS := @OPENJDK_BUILD_JVM_ASFLAGS@
 JVM_LIBS := @OPENJDK_BUILD_JVM_LIBS@
 
+NO_SPECULATIVE_CTI_CFLAGS := @OPENJDK_BUILD_NO_SPECULATIVE_CTI_CFLAGS@
+
 # The compiler for the build platform is likely not warning compatible with the official
 # compiler.
 WARNINGS_AS_ERRORS := false