title: Building Dart on Mac: "xcodebuild: error: 'dart.xcodeproj' does not exist."
body: <p>I think I've done all the steps I'm supposed to build Dart (at least twice, in fact), but I get this: </p>
  
  <pre><code>$ ./tools/build.py --arch=ia32
  xcodebuild -project dart.xcodeproj -target All -configuration DebugIA32 SYMROOT=/Users/eric/lib/dart/dart/xcodebuild
  Build settings from command line:
      SYMROOT = /Users/eric/lib/dart/dart/xcodebuild
  
  xcodebuild: error: 'dart.xcodeproj' does not exist.
  BUILD FAILED
  </code></pre>
  
  <p>Indeed, I don't see a <code>dart.xcodeproj</code> anywhere on my system. As far as I know, I haven't done anything weird. Any ideas?</p>
  
  <p>EDIT: I've run</p>
  
  <pre><code>$ gclient config http://dart.googlecode.com/svn/branches/bleeding_edge/deps/standalone.deps
  $ gclient sync
  $ gclient runhooks
  </code></pre>
  
  <p>which seems like all that's supposed to be necessary. (I've also tried it with <code>all.deps</code> instead of <code>standalone.deps</code>.)</p>