make/common/shared/Defs-java.gmk

@@ -199,11 +199,14 @@
   BOOT_JAVACFLAGS  += -Xlint:all
 endif
 ifeq ($(JAVAC_WARNINGS_FATAL), true)
   BOOT_JAVACFLAGS  += -Werror
 endif
-BOOT_JAVACFLAGS  += -encoding ascii
+
+BOOT_SOURCE_LANGUAGE_VERSION = 6
+BOOT_TARGET_CLASS_VERSION = 6
+BOOT_JAVACFLAGS  += -encoding ascii -source $(BOOT_SOURCE_LANGUAGE_VERSION) -target $(BOOT_TARGET_CLASS_VERSION)
 BOOT_JAR_JFLAGS += $(JAR_JFLAGS)
 
 BOOT_JAVACFLAGS  += $(NO_PROPRIETARY_API_WARNINGS)
 
 BOOT_JAVA_CMD      = $(BOOTDIR)/bin/java $(JAVA_TOOLS_FLAGS)