Recent versions of RISC-V gcc require "zicsr" in the compile line.

[RTimothyEdwards]

Recently when I compile the RISC-V toolchain, I cannot get caravel_board examples to compile unless I modify the compile line to change -march=rv32i to -march=rv32i_zicsr.

Apparently this is because there were optional libraries previously included into the code by default that no longer are; the "zicsr" library is one of these. I believe that means that making the change is backwardly-compatible with earlier versions of the RISC-V gcc toolchain, but that needs to be confirmed.

This problem has been reported by multiple people.

[Aidan-McNay]

@jeffdi @RTimothyEdwards I noticed this as well - the PR #86 should resolve this :)

[RTimothyEdwards]

@Aidan-McNay : Thanks for pointing to your pull request. I'll review it so that it can get merged. (Heads up, @jeffdi )