Index: solenv/gbuild/JavaClassSet.mk
===================================================================
--- solenv/gbuild/JavaClassSet.mk.orig
+++ solenv/gbuild/JavaClassSet.mk
@@ -47,6 +47,8 @@ $(call gb_Helper_abbreviate_dirs,\
 		$(if $(3),$(gb_JavaClassSet_JAVACCOMMAND) \
 			$(gb_JavaClassSet_JAVACDEBUG) \
 			$(gb_JavaClassSet_XBOOTCLASSPATH) \
+			-source $(JAVA_SOURCE_VER) \
+			-target $(JAVA_TARGET_VER) \
 			-Xbootclasspath/p:$(XBOOT_CP_P) \
 			-cp "$(T_CP)$(gb_CLASSPATHSEP)$(call gb_JavaClassSet_get_classdir,$(2))" \
 			-d $(call gb_JavaClassSet_get_classdir,$(2)) \