+_FILTER_OUT = $(foreach x,$(2),$(if $(findstring $(1),$(x)),,$(x)))
+
+LIB_REFS_FULL = $(call _FILTER_OUT,=, $(LIB_REFS))
+LIB_REFS_ALIAS = $(filter-out $(LIB_REFS_FULL),$(LIB_REFS))
+
+LIB_MCS_FLAGS += $(patsubst %,-r:$(topdir)/class/lib/$(PROFILE)/%.dll,$(LIB_REFS_FULL))
+LIB_MCS_FLAGS += $(patsubst %,-r:%.dll, $(subst =,=$(topdir)/class/lib/$(PROFILE)/,$(LIB_REFS_ALIAS)))