OSX M1环境Ruby3.1调用fork()遇NotImplementedError求助

方法一：重新编译适配ARM64的Ruby 3.1.2 #

1. 卸载当前有问题的Ruby版本：

   rvm uninstall 3.1.2
   

2. 确保已安装Homebrew版OpenSSL（未安装则先执行）：

   brew install openssl
   

3. 重新安装Ruby，指定ARM64架构及编译选项：

   rvm install 3.1.2 --with-openssl-dir=$(brew --prefix openssl) --enable-shared
   

4. 设置为默认版本：

   rvm use 3.1.2 --default
   

方法二：升级childprocess gem #

若重新编译Ruby后问题仍存在，升级childprocess到最新版本以适配ARM64架构：

bundle update childprocess

验证解决效果 #

打开irb执行以下命令，返回进程ID则说明fork功能恢复正常：

Kernel.fork

M1架构macOS环境中，通过RVM全新安装Ruby 3.1.2（已卸载系统内其他Ruby版本）后，调用Kernel.fork时报错：

# irb
3.1.2 :001 > Kernel.fork
(irb):1:in `fork': fork() function is unimplemented on this machine (NotImplementedError)
from (irb):1:in `<main>'
from /Users/me/.rvm/rubies/ruby-3.1.2/lib/ruby/gems/3.1.0/gems/irb-1.4.1/exe/irb:11:in `<top (required)>'
from /Users/me/.rvm/rubies/ruby-3.1.2/bin/irb:25:in `load'
from /Users/me/.rvm/rubies/ruby-3.1.2/bin/irb:25:in `<main>'
from /Users/me/.rvm/gems/ruby-3.1.2/bin/ruby_executable_hooks:22:in `eval'
from /Users/me/.rvm/gems/ruby-3.1.2/bin/ruby_executable_hooks:22:in `<main>'

该问题首次出现于升级Ruby并将测试驱动从cuprite切换为selenium后，完整错误栈如下：

NotImplementedError:
fork() function is unimplemented on this machine
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/childprocess-4.1.0/lib/childprocess/unix/fork_exec_process.rb:20:in `fork'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/childprocess-4.1.0/lib/childprocess/unix/fork_exec_process.rb:20:in `launch_process'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/childprocess-4.1.0/lib/childprocess/abstract_process.rb:81:in `start'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/selenium-webdriver-4.5.0/lib/selenium/webdriver/common/service_manager.rb:109:in `start_process'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/selenium-webdriver-4.5.0/lib/selenium/webdriver/common/service_manager.rb:56:in `block in start'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/selenium-webdriver-4.5.0/lib/selenium/webdriver/common/socket_lock.rb:41:in `locked'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/selenium-webdriver-4.5.0/lib/selenium/webdriver/common/service_manager.rb:54:in `start'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/selenium-webdriver-4.5.0/lib/selenium/webdriver/common/service.rb:84:in `launch'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/selenium-webdriver-4.5.0/lib/selenium/webdriver/common/driver.rb:341:in `service_url'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/selenium-webdriver-4.5.0/lib/selenium/webdriver/common/driver.rb:321:in `create_bridge'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/selenium-webdriver-4.5.0/lib/selenium/webdriver/common/driver.rb:74:in `initialize'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/selenium-webdriver-4.5.0/lib/selenium/webdriver/common/driver.rb:47:in `new'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/selenium-webdriver-4.5.0/lib/selenium/webdriver/common/driver.rb:47:in `for'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/selenium-webdriver-4.5.0/lib/selenium/webdriver.rb:89:in `for'
      # /Users/me/.rvm/gems/ruby-3.1.2/gems/capybara-3.36.0/lib/capybara/selenium/driver.rb:83:in `browser'
      # ./spec/rails_helper.rb:143:in `block (2 levels) in <top (required)>'

内容的提问来源于stack exchange，提问作者compiledweird