1.8用のgccを入れるbrewfile # for ruby1.8.7 tap homebrew/dupes install apple-gcc42 install chruby install ruby-build … ruby-buildで入れる sudo mkdir -p /opt sudo chown ユーザ名 /opt mkdir -p /opt/rubies/ ruby-build 1.8.7-p375 /opt/rubies/ru…