Githubから開発のためcloneダウンロードしたrailsなのですが、rails sを実行したところでエラーが出ました。
bundle installが必要とのことだったので、bundle installすると次のようなエラーが出て困っています。
Errno::EPERM: Operation not permitted @ chmod_internal - /Users/futamidaiki/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/json-2.0.2/tests/test_helper.rb An error occurred while installing json (2.0.2), and Bundler cannot continue. Make sure that `gem install json -v '2.0.2'` succeeds before bundling.
色々ググってみましたが、良い回答が得られなかったのでご教授いただければ幸いです。
gem -v 2.5.1
ruby -v
ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin15]
rails -v
<追記>
sudo gem install -n /usr/local/bin json -v '2.0.2'
を実行すると
Building native extensions. This could take a while...
ERROR: Error installing json:
ERROR: Failed to build gem native extension.
current directory: /Users/futamidaiki/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/json-2.0.2/ext/json/ext/generator
/Users/futamidaiki/.rbenv/versions/2.3.0/bin/ruby -r ./siteconf20170121-6816-1gizp4.rb extconf.rb
creating Makefile
current directory: /Users/futamidaiki/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/json-2.0.2/ext/json/ext/generator
make "DESTDIR=" clean
make: error: unable to find utility "make", not a developer tool or in PATH
current directory: /Users/futamidaiki/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/json-2.0.2/ext/json/ext/generator
make "DESTDIR="
make: error: unable to find utility "make", not a developer tool or in PATH
make failed, exit code 72
Gem files will remain installed in /Users/futamidaiki/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/json-2.0.2 for inspection.
Results logged to /Users/futamidaiki/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/extensions/x86_64-darwin-15/2.3.0-static/json-2.0.2/gem_make.out
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