xcode - can't setup ruby environment - installing fii gem error -

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i'm trying setup environtment ruby project. when run 'bundle', have error during installing 'fii' gem:

      installing ffi (1.8.1)      gem::installer::extensionbuilderror: error: failed build gem native extension.          /users/bmalets/.rvm/rubies/ruby-1.9.3-p448/bin/ruby extconf.rb      checking ffi.h... *** extconf.rb failed ***     not create makefile due reason, lack of     necessary libraries and/or headers.  check mkmf.log file more     details.  may need configuration options.      /users/bmalets/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/mkmf.rb:381:in `try_do': compiler failed generate executable file. (runtimeerror)     have install development tools first.      gem files remain installed in /users/bmalets/.rvm/gems/ruby-1.9.3-p448@api2/gems/ffi-1.8.1 inspection.     results logged /users/bmalets/.rvm/gems/ruby-1.9.3-p448@api2/gems/ffi-1.8.1/ext/ffi_c/gem_make.out      error occurred while installing ffi (1.8.1), , bundler cannot continue.     make sure `gem install ffi -v '1.8.1'` succeeds before bundling.

my environment:

  • os_x 10.8.4

  • ruby 1.9.3p448

  • xcode 4.6.3

  • libffi-3.0.13

please, me fix it.

make sure have installed apple xcode , command line tools (look @ screenshot):

https://developer.apple.com/technologies/tools/

after that, don't forget install libffi.

1) if using homebrew

brew install libffi

2) if using macport

sudo port install libffi

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