A platform hook to run something before the preprocessor?

[carlosperate]

Describe the problem

I coudn't find a hook documented in https://arduino.github.io/arduino-cli/0.27/platform-specification/#pre-and-post-build-hooks-since-arduino-ide-165 that runs before the preprocessor.

To reproduce

N/A

Expected behavior

N/A

Arduino CLI version

0.27.1

Operating system

N/A

Operating system version

N/A

Additional context

Looking around in the source code I've found a reference to recipe.hooks.prebuild, which seems to do the trick, but as it is not in the docs I'm not sure if I am meant to be using it?

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the nightly build
• My report contains all necessary details

[cmaglie]

You're right, recipe.hooks.prebuild is the correct one. We support it but it didn't get through the documentation, I'll open a PR to add it to the documentation.