Devises gem をインストールしようとしています。実行するbundle installと、これまでにない bcrypt-ruby でこのエラーが発生します。私に何ができる？
Installing bcrypt-ruby (3.0.1) with native extensions
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb
creating Makefile
make
xcrun cc -I. -I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin11.0 -I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin11.0 -I. -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -fno-common -arch i386 -arch x86_64 -g -Os -pipe -fno-common -DENABLE_DTRACE -fno-common -pipe -fno-common -c bcrypt_ext.c
Error: No developer directory found at /Developer. Run /usr/bin/xcode-select to update the developer directory path.
make: *** [bcrypt_ext.o] Error 1
Gem files will remain installed in /Users/Fryed/.bundler/tmp/25124/gems/bcrypt-ruby-3.0.1 for inspection.
Results logged to /Users/Fryed/.bundler/tmp/25124/gems/bcrypt-ruby-3.0.1/ext/mri/gem_make.out
An error occured while installing bcrypt-ruby (3.0.1), and Bundler cannot continue.
Make sure that `gem install bcrypt-ruby -v '3.0.1'` succeeds before bundling.
さて、bcrypt-ruby をインストールする必要があります...
wpub-6-65:treebook Fryed$ sudo gem install bcrypt-ruby -v '3.0.1'
Password:
Building native extensions. This could take a while...
ERROR: Error installing bcrypt-ruby:
ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb
creating Makefile
make
xcrun cc -I. -I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin11.0 -I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin11.0 -I. -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -fno-common -arch i386 -arch x86_64 -g -Os -pipe -fno-common -DENABLE_DTRACE -fno-common -pipe -fno-common -c bcrypt_ext.c
Error: No developer directory found at /Developer. Run /usr/bin/xcode-select to update the developer directory path.
make: *** [bcrypt_ext.o] Error 1
Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/bcrypt-ruby-3.0.1 for inspection.
Results logged to /Library/Ruby/Gems/1.8/gems/bcrypt-ruby-3.0.1/ext/mri/gem_make.out