Xcode 4: Auto-complete & Jump to Definition broken in my Xcode 3 Project

Question

My project was created in Xcode 3, I\'m opening it in Xcode 4 and notice the following:

• \'Jump to Definition\' no longer works with my own symbols

Answer 1

In our case the culprit turned out to be old version of the three20 libs. To get the project working I had to:

1. Remove all references to three20 from the project
2. Follow the instructions at http://three20.info/article/2011-03-10-Xcode4-Support

As soon as the new library was installed, xcode4 automatically reindexed. Code completion, jump to definition and even Refactor all work now. The Joy(tm) of working with Xcode is back! :)

In more general terms, any library that puts it header files into BUILT_PRODUCT_DIR is likely to have similar issues.