Error in rake libmruby with the Latest mrubyc

[hayaokimura]

I was unable to execute rake libmruby in prk_firmware due to the following error:

cc1: fatal error: /prk_firmware/lib/picoruby/mrbgems/picoruby-mrubyc/repos/mrubyc/src/hal_posix/hal.c: No such file or directory

It appears that in the latest version of mrubyc, the file has been moved from src/hal_posix/hal.c to hal/posix/hal.c. Specifying MRUBYC_REVISION=18e8f9d (the commit hash for release3.2) as an environment variable resolved the issue, and the process completed successfully. I was uncertain whether to align prk_firmware with the master branch of mrubyc or to specify the revision in the compose.yml of prk_firmware, so I am reporting this without submitting a PR.

services:
  prk:
    environment:
      - MRUBYC_REVISION=18e8f9d
    build:
      context: .
      dockerfile: Dockerfile
    stdin_open: true
    tty: true
    volumes:
      - .:/prk_firmware

[hasumikin]

Fixed. You will need to do rake deep_clean once