ターミナルから
$ sudo gem install passenger
Building native extensions. This could take a while...
ERROR: Error installing passenger:
ERROR: Failed to build gem native extension.
/Users/dan/.rvm/rubies/ruby-2.0.0-p0/bin/ruby extconf.rb
extconf.rb:13:in `block in <main>': Use RbConfig instead of obsolete and deprecated Config.
extconf.rb:13:in `block in <main>': Use RbConfig instead of obsolete and deprecated Config.
make
Makefile:104: *** missing separator. Stop.
Gem files will remain installed in /Users/dan/.rvm/gems/ruby-2.0.0-p0/gems/fastthread-1.0.7 for inspection.
Results logged to /Users/dan/.rvm/gems/ruby-2.0.0-p0/gems/fastthread-1.0.7/ext/fastthread/gem_make.out
このエラーがわかりません。なぜ 2 回表示されるのですか? 任意のガイダンスをいただければ幸いです。