配置Nim的默认编译参数 release build并运行 ref: https://qiita.com/codegay/items/b6a98d3a08045d069f92

nim.cfg

# Configuration file for the Nim Compiler.
# (c) 2017 Andreas Rumpf

# Feel free to edit the default values as you need.

# You may set environment variables with
# @putenv "key" "val"
# Environment variables can be accessed like so:
#  gcc.path %= "$CC_PATH"

cc = gcc
r
d:release
...
...
...