Where to find xtensa-lx106-elf-standalone.tar.gz

[iv3wjr]

Hi to all,
I'm trying to build the current version of micropyhton (from https://github.com/micropython/micropython/) for the esp8266. Unfortunately my old version of the xtensa toolchain (x86_64-linux-gnu.xtensa-lx106-elf-c791b74.230224.tar.gz) does not work anymore. The error is:

xtensa-lx106-elf-gcc: error: unrecognized command line option '-mforce-l32'

I searched for an updated version of the compiler with no luck. Can someone help me?

[scruss]

The MicroPython port to ESP8266 instructions look out of date. The jepler/esp-open-sdk repo referenced there no longer exists. There's an archived copy of xtensa-lx106-elf-standalone.tar.gz from January 2020, but I haven't tested to see if it works.

[shariltumin]

You can find link for the xtensa-lx106-elf here:

https://docs.espressif.com/projects/esp8266-rtos-sdk/en/latest/get-started/linux-setup.html

[iv3wjr]

Thanks for the link but following the instructions the problem is always the same making BOARD=ESP8266_GENERIC:

xtensa-lx106-elf-gcc: error: unrecognized command line option '-mforce-l32'

It looks like the developers used a different compiler or should I add some more options when building? I'm building on Ubuntu 24.04.3 LTS, x86_64.

[shariltumin]

I am using version 485. You can find the link to the toolchain at https://github.com/shariltumin/xtensa-lx106-elf-v485
Hope it will work for you.

[iv3wjr]

Great! It works for me, thank you so much but please tell us how you found it. I cannot understand why Espressif hides their toolchain but... "c'est la vie"

[shariltumin]

Toolchain v485 is an older version that may no longer be supported by Espressif. I created the tar file using the toolchain installed on my PC. It seems that newer toolchain versions do not currently work with the ESP8266 port of MicroPython.

[iv3wjr]

Thanks again to shariltumin, for me the issue is solved.