py: Move frozen bytecode Makefile rules from ports to common mk files.

Now, to use frozen bytecode all a port needs to do is define
FROZEN_MPY_DIR to the directory containing the .py files to freeze, and
define MICROPY_MODULE_FROZEN_MPY and MICROPY_QSTR_EXTRA_POOL.

1 files changed, 6 insertions, 0 deletions

diff --git a/py/py.mk b/py/py.mk
index 767fcac52..c71ab7a0c 100644
--- a/py/py.mk
+++ b/py/py.mk
@@ -237,10 +237,16 @@ PY_O_BASENAME = \
 # prepend the build destination prefix to the py object files
 PY_O = $(addprefix $(PY_BUILD)/, $(PY_O_BASENAME))
 
+# object file for frozen files
 ifneq ($(FROZEN_DIR),)
 PY_O += $(BUILD)/$(BUILD)/frozen.o
 endif
 
+# object file for frozen bytecode (frozen .mpy files)
+ifneq ($(FROZEN_MPY_DIR),)
+PY_O += $(BUILD)/$(BUILD)/frozen_mpy.o
+endif
+
 # Sources that may contain qstrings
 SRC_QSTR_IGNORE = nlr% emitnx% emitnthumb% emitnarm%
 SRC_QSTR = $(SRC_MOD) $(addprefix py/,$(filter-out $(SRC_QSTR_IGNORE),$(PY_O_BASENAME:.o=.c)) emitnative.c)