1 files changed, 5 insertions, 0 deletions
diff --git a/py/py.mk b/py/py.mk
index dacfa1bd0..8aac460b4 100644
--- a/py/py.mk
+++ b/py/py.mk
@@ -218,6 +218,11 @@ $(HEADER_BUILD)/moduledefs.h: $(HEADER_BUILD)/moduledefs.collected
 	@$(ECHO) "GEN $@"
 	$(Q)$(PYTHON) $(PY_SRC)/makemoduledefs.py $< > $@
 
+# build a list of registered root pointers for py/mpstate.h.
+$(HEADER_BUILD)/root_pointers.h: $(HEADER_BUILD)/root_pointers.collected $(PY_SRC)/make_root_pointers.py
+	@$(ECHO) "GEN $@"
+	$(Q)$(PYTHON) $(PY_SRC)/make_root_pointers.py $< > $@
+
 # Standard C functions like memset need to be compiled with special flags so
 # the compiler does not optimise these functions in terms of themselves.
 CFLAGS_BUILTIN ?= -ffreestanding -fno-builtin -fno-lto