llvm/libc/config/baremetal/config.json

{
  "errno": {
    "LIBC_CONF_ERRNO_MODE": {
      "value": "LIBC_ERRNO_MODE_EXTERNAL"
    }
  },
  "printf": {
    "LIBC_CONF_PRINTF_DISABLE_FLOAT": {
      "value": true
    },
    "LIBC_CONF_PRINTF_DISABLE_INDEX_MODE": {
      "value": true
    },
    "LIBC_CONF_PRINTF_DISABLE_WRITE_INT": {
      "value": true
    },
    "LIBC_CONF_PRINTF_FLOAT_TO_STR_USE_MEGA_LONG_DOUBLE_TABLE": {
      "value": false
    }
  },
  "qsort": {
    "LIBC_CONF_QSORT_IMPL": {
      "value": "LIBC_QSORT_HEAP_SORT"
    }
  }
}