Failed to build on Ubuntu 25.10 due to incompatible libxml2

[andber1]

Bug description

error: failed to run custom build command for esp-idf-sys v0.36.1
[...]
ERROR: tool esp-clang version 16.0.1-fe4f10a809 is installed, but getting error: non-zero exit code (127) with message: /home/[...]/.embuild/espressif/tools/esp-clang/16.0.1-fe4f10a809/esp-clang/bin/clang: error while loading shared libraries: libxml2.so.2: cannot open shared object file: No such file or directory

Maybe this is related?
https://discourse.ubuntu.com/t/psa-ubuntu-25-10-features-a-libxml2-version-with-api-breaking-changes/71783

To Reproduce

1. Install prerequisites
2. Create a new blank project from the template
3. Start build

Expected behavior

It should build without errors.

Environment

• ESP-IDF branch or tag: v5.3.3
• Target device (MCU): esp32c3
• OS: Ubuntu 25.10
• How did you install the environment: see readme

[andber1]

The workaround mentioned here works for me.

[ivmarkov]

Did you do this, i.e. install all prerequisites mentioned in the Prerequisites section?

[andber1]

Yes, I followed exactly that instructions.

[ivmarkov]

OK, I've pinned the issue, as it is likely 25.10 specific, so folks can have a workaround until ESP-IDF updates their documentation as to what needs to be installed.

I'm still on 24.04 myself.