mac big sur 安装Cocoapods

升级系统后发现 cocoapods 损坏，记录一下重新安装过程

执行命令：

sudo gem install -n /usr/local/bin cocoapods

报错：

Building native extensions. This could take a while...
ERROR:  Error installing cocoapods:
    ERROR: Failed to build gem native extension.

    current directory: /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.5/ext/ffi_c
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0 -r ./siteconf20220414-53747-cr18v2.rb extconf.rb

1. 安装最新版ruby:

brew install ruby

2. 根据提示执行下面命名：
   我的是在 .zshrc 文件，默认是在 .bash_profile。如果没有安装 zsh 的话，就用默认的 .bash_profile

echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >> ~/.zshrc
export LDFLAGS="-L/usr/local/opt/ruby/lib"
export CPPFLAGS="-I/usr/local/opt/ruby/include"
export PKG_CONFIG_PATH="/usr/local/opt/ruby/lib/pkgconfig"
echo 'export LDFLAGS="-L/usr/local/opt/ruby/lib"' >> ~/.zshrc
echo 'export CPPFLAGS="-I/usr/local/opt/ruby/include"' >> ~/.zshrc
echo 'export PKG_CONFIG_PATH="/usr/local/opt/ruby/lib/pkgconfig"' >> ~/.zshrc

3. 安装 Cocoapods

sudo gem install -n /usr/local/bin cocoapods

ps: 如果网络不好，gem 无法更新的话，可以先修改 gem 源，再执行第 3 步

// 查看 gem 源是哪个
gem sources -l
// 移除官网的
gem sources --remove https://rubygems.org/
//添加源国内源
gem sources -a https://gems.ruby-china.com