I am using OSX Yoemite and I have visited almost all questions about this on StackOverflow and none of the answers worked... I am currently trying to use the command "pod install" and I am getting this error:
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:245:in `mkdir': Permission denied - /Library/Ruby/Gems/2.0.0/extensions/universal-darwin-14/2.0.0/xcodeproj-0.16.1 (Errno::EACCES)
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:245:in `fu_mkdir'
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:219:in `block (2 levels) in mkdir_p'
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:217:in `reverse_each'
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:217:in `block in mkdir_p'
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:203:in `each'
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:203:in `mkdir_p'
from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:210:in `write_gem_make_out'
from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:132:in `build_error'
from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:171:in `rescue in build_extension'
from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:156:in `build_extension'
from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:198:in `block in build_extensions'
from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:195:in `each'
from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:195:in `build_extensions'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:1436:in `block in build_extensions'
from /Library/Ruby/Site/2.0.0/rubygems/user_interaction.rb:45:in `use_ui'
from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:1434:in `build_extensions'
from /Library/Ruby/Site/2.0.0/rubygems/stub_specification.rb:60:in `build_extensions'
from /Library/Ruby/Site/2.0.0/rubygems/basic_specification.rb:56:in `contains_requirable_file?'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:68:in `block in require'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:67:in `each'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:67:in `find'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:67:in `require'
from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.32.1/lib/cocoapods.rb:1:in `<top (required)>'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:73:in `require'
from /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:73:in `require'
from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.32.1/bin/pod:32:in `<top (required)>'
from /usr/bin/pod:23:in `load'
from /usr/bin/pod:23:in `<main>'
And it also says: ERROR: Failed to build gem native extension. Does anyone know how to fix this? Thanks!
Try this (Worked for me with OSX 10.10)
Uninstall cocoapods
$ sudo gem uninstall cocoapods
Install xcodeproj
$ sudo gem install xcodeproj
Install cocoapods
$ sudo gem install cocoapods
Run pod --version
to verify