Can't install v2.0.0 on arm64

[urish]

Hardware:

Board: any
Core Installation version: 2.0.0
IDE name: Arduino CLI
Computer OS: Linux-aarch64 (arm64)

Description:

Installation fails with an error:

Error during install: Error downloading tool esp32:riscv32-esp-elf-gcc@gcc8_4_0-esp-2021r1: no versions available for the current OS%!(EXTRA *cores.ToolRelease=esp32:riscv32-esp-elf-gcc@gcc8_4_0-esp-2021r1)

Seems like arm64 support was originally added by #4117, but broke due to the introduction of the riscv32 core support.

[igrr]

Linking espressif/esp-idf#6432 which tracks adding aarch64 host support in ESP-IDF. Once that's released in IDF (planned for esp-2021r2 toolchain release), we can pick these tool releases in arduino-esp32.

It looks like #4117 simply added existing 32-bit ARM (armel) toolchains as ones to install for aarch64, so I'm not quite sure how that worked. Perhaps one can sudo dpkg --add-architecture armhf to install make these 32-bit tools work on a 64-bit system? If that does work, we can try to re-add these armel versions of tools.

[urish]

Thanks for looking into this, @igrr

How can I help with testing this?

Adding dpkg --add-architecture armhf at the top of my container's Dockerfile didn't resolve the error, but I'm pretty sure I'm missing something? Probably need to make some changes to the actual arduino-esp32 package to test this?

[Jason2866]

@igrr Is it planned to release the toolchains for Apple Silicon M1 too?

[igrr]

@urish correct, installing architecture support is likely not sufficient. At least these armel tools need to be listed as downloads for arm64, this has to be done in package.json of the arduino-esp32 release. It is possible that other steps will be necessary, e.g. installing libc or other system libraries for armhf.

You can download the armel toolchain to your arm64 system (link here) and then try to run it. If that fails, check if some additional libraries need to be installed (use ldd to find the dependencies). If all that is successful somehow, then we can update package_esp32_index.template.json and include this change into the next release.

[igrr]

@Jason2866 Yes, espressif/esp-idf#6113 is the tracking issue for M1 toolchain. However it's not going to be part of the next esp-2021r2 toolchain release, maybe will get done in the one after that.

[urish]

Thanks for the direction! I have changed the generated board file and added the armhf binaries for the aarch64-linux-gnu architecture, then installed the new package and voila - it works like a charm!

I also verified I could compile for the following boards:

• esp32:esp32:esp32doit-devkit-v1
• esp32:esp32:franzininho_wifi_esp32s2
• esp32:esp32:esp32c3

all compiled well. This is what the modified file looks like.

Should go ahead and send a pull request?

[urish]

Anything I can do to help with this?

[igrr]

@me-no-dev Do you think we can still add this to 2.0.1?

[me-no-dev]

yes. will update the toolchains for 2.0.1 :)

[urish]

Thank you!