-obj/charset/libcharset.a: $(addsuffix .o,$(addprefix obj/charset/,$(LIBCHARSET_MODS)))
-obj/charset/libcharset.so: $(addsuffix .oo,$(addprefix obj/charset/,$(LIBCHARSET_MODS)))
+$(o)/charset/libcharset.a: $(addsuffix .o,$(addprefix $(o)/charset/,$(LIBCHARSET_MODS)))
+$(o)/charset/libcharset.so: $(addsuffix .oo,$(addprefix $(o)/charset/,$(LIBCHARSET_MODS)))
+
+INCLUDES+=$(o)/charset/.include-stamp
+$(o)/charset/.include-stamp: $(addprefix $(s)/charset/,$(LIBCHARSET_INCLUDES))
+ $(s)/build/install-includes $(s)/charset run/include/charset $(?F)
+ touch $(o)/charset/.include-stamp