idf Build failed with LWIP_IRAM_OPTIMIZATION (IDFGH-3823)

[LXY1226]

Environment

Development Kit	other [WT32-SC01]
Kit version	N/A
Module or chip used	[ESP32-WROVER-B]
IDF version	v4.1-rc
Build System	idf.py
Compiler version	(crosstool-NG esp-2020r2) 8.2.0
Operating System	Windows
(Windows only) environment type	Plain Command Prompt.
Using an IDE?	Yes [CLion with ESP Plugin]
Power Supply	USB

Problem Description

esp-idf/tools/ldgen/ldgen.py Fails while LWIP_IRAM_OPTIMIZATION = y;

Build Log

FAILED: esp-idf/esp32/ld/esp32.project.ld

cmdline

cmd.exe /C "cd /D C:\Users*User*\CLionProjects\esp\build\esp-idf\esp32 && C:\Users*User*.espressif\python_env\idf4.1_py3.8_env\Scripts\python.exe C:/Users/User/Code/esp-idf/tools/ldgen/ldgen.py --config C:/Users/User/CLionProjects/esp/sdkconfig --fragments C:/Users/User/Code/esp-idf/components/xtensa/linker.lf C:/Users/User/Code/esp-idf/components/esp_ringbuf/linker.lf C:/Users/User/Code/esp-idf/components/spi_flash/linker.lf C:/Users/User/Code/esp-idf/components/espcoredump/linker.lf C:/Users/User/Code/esp-idf/components/esp32/linker.lf C:/Users/User/Code/esp-idf/components/esp32/ld/esp32_fragments.lf C:/Users/User/Code/esp-idf/components/soc/linker.lf C:/Users/User/Code/esp-idf/components/esp_event/linker.lf C:/Users/User/Code/esp-idf/components/esp_wifi/linker.lf C:/Users/User/Code/esp-idf/components/lwip/linker.lf C:/Users/User/Code/esp-idf/components/log/linker.lf C:/Users/User/Code/esp-idf/components/heap/linker.lf C:/Users/User/Code/esp-idf/components/freertos/linker.lf C:/Users/User/Code/esp-idf/components/newlib/esp32-spiram-rom-functions-c.lf C:/Users/User/Code/esp-idf/components/newlib/newlib.lf C:/Users/User/Code/esp-idf/components/app_trace/linker.lf C:/Users/User/Code/esp-idf/components/esp_gdbstub/linker.lf --input C:/Users/User/Code/esp-idf/components/esp32/ld/esp32.project.ld.in --output C:/Users/User/CLionProjects/esp/build/esp-idf/esp32/ld/esp32.project.ld --kconfig C:/Users/User/Code/esp-idf/Kconfig --env-file C:/Users/User/CLionProjects/esp/build/config.env --libraries-file C:/Users/User/CLionProjects/esp/build/ldgen_libraries --objdump C:/Users/User/.espressif/tools/xtensa-esp32-elf/esp-2019r2-8.2.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-objdump.exe"

Traceback (most recent call last):
File "C:/Users/User/Code/esp-idf/tools/ldgen/ldgen.py", line 158, in
main()
File "C:/Users/User/Code/esp-idf/tools/ldgen/ldgen.py", line 134, in main
mapping_rules = generation_model.generate_rules(sections_infos)
File "C:/Users/User/Code/esp-idf/tools/ldgen/generation.py", line 352, in generate_rules
self._create_exclusions(mapping_rules, default_rules, sections_infos)
File "C:/Users/User/Code/esp-idf/tools/ldgen/generation.py", line 451, in _create_exclusions
general_rule.add_exclusion(specific_rule, sections_info)
File "C:/Users/User/Code/esp-idf/tools/ldgen/generation.py", line 100, in add_exclusion
expansions = do_section_expansion(self, section)
File "C:/Users/User/Code/esp-idf/tools/ldgen/generation.py", line 84, in do_section_expansion
expansions = fnmatch.filter(sections_in_obj, section) [Debugger Screenshot]
File "C:/Users/User/AppData/Local/Programs/Python/Python38/lib/fnmatch.py", line 59, in filter
for name in names:
TypeError: 'NoneType' object is not iterable
ninja: build stopped: subcommand failed.
ninja failed with exit code 1

Steps to reproduce

1. make a copy of Helloworld
2. Tagged (Top) → Component config → LWIP → Enable LWIP IRAM optimization

sdkconfig

sdkconfig

Python Debugger Screenshot

[renzbagaporo]

In this case it seems that ethernetif.c is not being compiled with your application, since CONFIG_ETH_ENABLED is missing from your config. To enable, you have to enable one of the three:

CONFIG_ETH_USE_ESP32_EMAC
CONFIG_ETH_USE_SPI_ETHERNET
CONFIG_ETH_USE_OPENETH

These seem to be undefined in the config you posted.

[m-bruck]

But for a WiFi only device this includes unnecessary drivers just to allow the LWIP IRAM optimization?

In this case it seems that ethernetif.c is not being compiled with your application, since CONFIG_ETH_ENABLED is missing from your config. To enable, you have to enable one of the three:

CONFIG_ETH_USE_ESP32_EMAC
CONFIG_ETH_USE_SPI_ETHERNET
CONFIG_ETH_USE_OPENETH

These seem to be undefined in the config you posted.

[ESP-Marius]

Closing the issue as this does not seem to be a problem anymore on the latest IDF master.