+else ifdef SPLIT_TO_SLICES
+POSTFIXES := $(foreach file, $(SPLIT_TO_SLICES), $(addsuffix $(file), _part_))
+POSTFIXES := $(foreach file, $(POSTFIXES), $(addprefix $(file), .cc))
+GENERATED_SOURCES2 := $(foreach file, $(GENERATED_SOURCES:.cc=), $(addprefix $(file), $(POSTFIXES)))
+GENERATED_SOURCES += $(GENERATED_SOURCES2)