I'd not overwrite the files but host the modified tool chain on a GitHub and just link it instead of the stock one. Pretty much like we use the rp2040 of earlphilower

@caveman99 I totally agree, and spent several hours trying to do exactly that, and failed to find the magic incantation to make it work. I'm sure it's possible, but this approach is what actually compiled and worked.

I'll take another shot at including it as a framework-package, and see if I can find how to do it.

Edit: Yeah, once again I hit the same problem, rooted in the frustrating lack of documentation on how to do this. I can specify my compiled libs using platform_packages = platformio/framework-arduinoespressif32-libs and it compiles, but the output firmware doesn't actually use the custom changes. No change in iram usage.

@jp-bennett You may want to grab a platformio package zip from https://github.com/mskvortsov/meshtastic-esp32-arduino-libs, I've put your sdkconfig options into there. And I'm ok if you want to import that repo into the meshtastic github organization.