いきさつ

RailsでMySQLを使いたくGemfileに以下を追記

gem 'mysql2'

buldle install すると以下のエラー

ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [mysql2.bundle] Error 1

make failed, exit code 2

Gem files will remain installed in /Users/yoshiyuki_sakamoto/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/mysql2-0.5.2 for inspection.
Results logged to /Users/yoshiyuki_sakamoto/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/extensions/x86_64-darwin-14/2.4.0-static/mysql2-0.5.2/gem_make.out

An error occurred while installing mysql2 (0.5.2), and Bundler cannot continue.
Make sure that `gem install mysql2 -v '0.5.2'` succeeds before bundling.

xcode-selectてきなのを入れる必要があるっぽい？

とりあえず https://developer.apple.com/download/more/ から command line tools を入れる

Errno::EACCES: Permission denied @ rb_sysopen -
/Users/yoshiyuki_sakamoto/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/mysql2-0.5.2/CHANGELOG.md
An error occurred while installing mysql2 (0.5.2), and Bundler cannot continue.
Make sure that `gem install mysql2 -v '0.5.2'` succeeds before bundling.

エラーがかわった

なんか結局rootでやらんとあかんのかな