Ruby 3.2.1搭建Jekyll时gem install eventmachine -v '1.2.7'失败如何解决？

问题现象 #

执行bundle命令时触发eventmachine编译失败，核心报错信息如下：

current directory: /Users/chandanj/.rvm/gems/ruby-3.2.1/gems/eventmachine-1.2.7/ext
make DESTDIR\= sitearchdir\=./.gem.20230620-52033-h7p7oy sitelibdir\=./.gem.20230620-52033-h7p7oy
compiling binder.cpp
In file included from binder.cpp:20:
./project.h:119:10: fatal error: 'openssl/ssl.h' file not found
#include <openssl/ssl.h>
         ^~~~~~~~~~~~~~~
1 error generated.
make: *** [binder.o] Error 1

make failed, exit code 2

An error occurred while installing eventmachine (1.2.7), and Bundler cannot continue.

错误原因 #

eventmachine 1.2.7编译时依赖OpenSSL的开发头文件，当前系统未安装该依赖或编译器无法识别其路径。

解决步骤 #

1. 安装OpenSSL开发包（针对macOS系统，使用Homebrew）：

   brew install openssl
   

2. 指定OpenSSL路径手动安装eventmachine：

   gem install eventmachine -v '1.2.7' -- --with-openssl-dir=$(brew --prefix openssl)
   

3. 重新执行bundle命令：

   bundle install
   

内容的提问来源于stack exchange，提问作者Indyarocks