--- old/make/CompileJavaModules.gmk	2015-03-03 12:13:42.413313136 +0100
+++ new/make/CompileJavaModules.gmk	2015-03-03 12:13:42.337309965 +0100
@@ -467,6 +467,10 @@
 # space separated list.
 JDK_USER_DEFINED_FILTER := $(strip $(subst $(COMMA),$(SPACE), $(JDK_FILTER)))
 
+# Create an empty directory to set the bootclasspath to.
+EMPTY_BOOTCLASSPATH := $(OUTPUT_ROOT)/tmp/empty-dir
+$(call MakeDir, $(EMPTY_BOOTCLASSPATH))
+
 # This macro sets up compilation of a module and declares dependencies for it.
 # Param 1 - module name
 define SetupModuleCompilation
@@ -485,7 +489,7 @@
     $1_CLASSPATH := $$($1_CLASSPATH) $$(addprefix $(JDK_OUTPUTDIR)/modules/,jdk.hotspot.agent)
   endif
   $1_CLASSPATH := $$(subst $$(SPACE),$$(PATH_SEP),$$($1_CLASSPATH))
-  $1_JAVAC_FLAGS := -bootclasspath "$$($1_CLASSPATH)"
+  $1_JAVAC_FLAGS := -bootclasspath $(EMPTY_BOOTCLASSPATH) -classpath "$$($1_CLASSPATH)"
 
   $$(eval $$(call SetupJavaCompilation,$1, \
       SETUP := $$(if $$($1_SETUP), $$($1_SETUP), GENERATE_JDKBYTECODE), \
--- old/make/common/JavaCompilation.gmk	2015-03-03 12:13:42.757327485 +0100
+++ new/make/common/JavaCompilation.gmk	2015-03-03 12:13:42.673323982 +0100
@@ -577,10 +577,6 @@
 
     $$($1_BIN)/_the.$1_batch: $$($1_SRCS) $$($1_DEPENDS) $$($1_VARDEPS_FILE)
 	$(MKDIR) -p $$(@D) $$(dir $$($1_SJAVAC_PORTFILE))
-        # As a workaround for sjavac not tracking api changed from the classpath, force full
-        # recompile if an external dependency, which is something other than a source
-        # change, triggered this compilation.
-	$$(if $$(filter-out $$($1_SRCS), $$?), $(FIND) $$(@D) -name "*.class" $(FIND_DELETE))
 	$$(call ListPathsSafely,$1_SRCS,\n, >> $$($1_BIN)/_the.$1_batch.tmp)
 	$(ECHO) Compiling $1
 	($$($1_JVM) $$($1_SJAVAC) \