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-rw-r--r--ports/javascript/Makefile7
1 files changed, 7 insertions, 0 deletions
diff --git a/ports/javascript/Makefile b/ports/javascript/Makefile
index 7309dfa48..384253e54 100644
--- a/ports/javascript/Makefile
+++ b/ports/javascript/Makefile
@@ -25,6 +25,13 @@ LDFLAGS = -m32 -Wl,-Map=$@.map,--cref -Wl,--gc-sections
CFLAGS += -O0 -DNDEBUG
CFLAGS += -fdata-sections -ffunction-sections
+ifneq ($(FROZEN_MPY_DIR),)
+# To use frozen bytecode, put your .py files in a subdirectory (eg frozen/) and
+# then invoke make with FROZEN_MPY_DIR=frozen (be sure to build from scratch).
+CFLAGS += -DMICROPY_QSTR_EXTRA_POOL=mp_qstr_frozen_const_pool
+CFLAGS += -DMICROPY_MODULE_FROZEN_MPY
+endif
+
SRC_LIB = $(addprefix lib/,\
utils/interrupt_char.c \
utils/stdout_helpers.c \