Frozen content not ending up in firmware

[barnslig]

Hello!

I am trying to freeze some bytecode into a firmware for the ESP32-S3. However, the bytecode seems not to end up in the firmware.

What I have tried:

cd ports/esp32
make submodules
make -j8 BOARD=ESP32_GENERIC_S3 FROZEN_MANIFEST=$HOME/Code/myproject/manifest.py

The manifest.py looks like this:

include("$(PORT_DIR)/boards/manifest.py")
require("logging")

When I flash the resulting micropython.bin onto the ESP, the logging library cannot be used using import logging on the REPL. Also, when I search for strings used by the logging library inside the firmware binary, e.g. "CRITICAL", there are no results.

The ports/esp32/build-ESP32_GENERIC_S3/frozen_content.c file seems to contain the logging library, and it also ends up inside ports/esp32/build-ESP32_GENERIC_S3/frozen_mpy/logging.mpy.

It seems as if frozen_content.c is not part of the firmware binary.

Does anyone have an idea how to resolve the issue so that frozen bytecode gets included in the firmware binary?

My environment:

• ESP-IDF v5.2.2, inside Docker using espressif/idf:v5.2.2.
• Checked out Micropython v1.24.1

[ThinkTransit]

Have you tried doing a clean build, completely removing the directory "ports/esp32/build-ESP32_GENERIC_S3"?

[barnslig]

Yes, did not change the problem

[ThinkTransit]

This definitely isn't the correct solution but to help narrow down the problem it might be worthwhile editing ports/esp32/boards/manifest.py directly and seeing if that includes the logging module.

[barnslig]

I discovered that additional frozen modules do not end up in the micropython.map linker map file. Only the following modules get included. Maybe someone has an idea why the linker is not including all modules from frozen_content.c?

.rodata.frozen_module_upysh
.rodata.frozen_module_umqtt_simple
.rodata.frozen_module_umqtt_robust
.rodata.frozen_module_neopixel
.rodata.frozen_module_ds18x20
.rodata.frozen_module_onewire
.rodata.frozen_module_dht
.rodata.frozen_module_aioespnow
.rodata.frozen_module_urequests
.rodata.frozen_module_webrepl_setup
.rodata.frozen_module_webrepl
.rodata.frozen_module_ssl
.rodata.frozen_module_ntptime
.rodata.frozen_module_mip___init__
.rodata.frozen_module_requests___init__
.rodata.frozen_module_uasyncio
.rodata.frozen_module_asyncio_stream
.rodata.frozen_module_asyncio_lock
.rodata.frozen_module_asyncio_funcs
.rodata.frozen_module_asyncio_event
.rodata.frozen_module_asyncio_core
.rodata.frozen_module_asyncio___init__
.rodata.frozen_module_espnow
.rodata.frozen_module__boot
.rodata.frozen_module_inisetup
.rodata.frozen_module_flashbdev
.rodata.frozen_module_apa106

[shariltumin]

Suppose your project has these files:

$ ls
logging.py  manifest.py

then your manifest.py should have these lines in it:

$ cat manifest.py
include("$(PORT_DIR)/boards/manifest.py")
freeze("./", "logging.py")