8196896: Use SYSROOT_CFLAGS in dtrace gensrc

Reviewed-by: erikj

Author: magicus

make/hotspot/gensrc/GensrcDtrace.gmk

@@ -47,7 +47,7 @@ ifeq ($(call check-jvm-feature, dtrace), true)
 	$(call LogInfo, Generating dtrace header file $(@F))
 	$(call MakeDir, $(@D) $(DTRACE_SUPPORT_DIR))
 	$(call ExecuteWithLog, $(DTRACE_SUPPORT_DIR)/$(@F).d, \
-	    ($(CPP) $(DTRACE_CPP_FLAGS) $< > $(DTRACE_SUPPORT_DIR)/$(@F).d))
+	    ($(CPP) $(DTRACE_CPP_FLAGS) $(SYSROOT_CFLAGS) $< > $(DTRACE_SUPPORT_DIR)/$(@F).d))
 	$(call ExecuteWithLog, $@, $(DTRACE) $(DTRACE_FLAGS) -h -o $@ -s $(DTRACE_SUPPORT_DIR)/$(@F).d)
 
   # Process all .d files in DTRACE_SOURCE_DIR. They are: