GNU Arm Embedded Toolchain Version 10-2020-q4-major

Totally understand. Will explore options. The whole benefit of PlatformIO is its turnkey nature, so I’m hesitant to require our devs to do too much manual modification.

I’m confused by what you mean re: 32-bit support. Could you elaborate @valeros? From the ARM website:

The GNU Arm Embedded Toolchain targets the 32-bit Arm Cortex-A, Arm Cortex-M, and Arm Cortex-R processor families.