Gem::Ext::BuildError: ERROR: Failed to build gem native extension. /Users/rl/.rvm/rubies/ruby-2.1.2/bin/ruby extconf.rb creating Makefile make "DESTDIR=" clean Agreeing to the Xcode/iOS license requires admin privileges, please re-run as root via sudo. make "DESTDIR=" Agreeing to the Xcode/iOS license requires admin privileges, please re-run as root via sudo. make failed, exit code 69 Gem files will remain installed in /Users/rl/.rvm/gems/ruby-2.1.2@upgrade-ruby/gems/byebug-3.5.1 for inspection. Results logged to /Users/rl/.rvm/gems/ruby-2.1.2@upgrade-ruby/extensions/x86_64-darwin-13/2.1.0-static/byebug-3.5.1/gem_make.out An error occurred while installing byebug (3.5.1), and Bundler cannot continue. Make sure that `gem install byebug -v '3.5.1'` succeeds before bundling.
You need to do sudo xcrun cc
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