$(lib-y:.o=.S) $(extra-y:.o=.c) $(extra-y:.o=.S))
OBJS := $(addprefix $(obj),$(obj-y))
+# $(obj-dirs) is a list of directories that contain object files
+obj-dirs := $(dir $(OBJS))
+
+# Create directories for object files if directory does not exist
+# Needed when obj-y := dir/file.o syntax is used
+_dummy := $(foreach d,$(obj-dirs), $(shell [ -d $(d) ] || mkdir -p $(d)))
+
LGOBJS := $(addprefix $(obj),$(sort $(lib-y)))
all: $(LIB) $(addprefix $(obj),$(extra-y))