The requirements to build from source could use a couple more steps

[un-clouded]

When it said to me:

arm-none-eabi-gcc: fatal error: cannot read spec file 'nosys.specs': No such file or directory

I replied:

apt install libnewlib-arm-none-eabi

And when it said:

fatal error: cassert: No such file or directory

I retorted:

apt install libstdc++-arm-none-eabi-dev

And then it complained that:

/usr/lib/gcc/arm-none-eabi/12.2.1/../../../arm-none-eabi/bin/ld: cannot find -lstdc++: No such file or directory

And I spake thusly:

apt install libstdc++-arm-none-eabi-newlib

These are already in lib/pico-sdk/README.md, but it'd be super handy to have them at the top level too. Thanks heaps!

[dhansel]

Thanks for the report! I've added your solutions to the Readme file!