With the upgrade to XCode 4.3, one of the significant changes is that the /Developer folder is gone and instead bundled within the /Applications/XCode.app/ content bundle. One thing that you have to remember is that for the command-line tools (of which now you should be downloading individually within the Apple Developer Site) is that you have to switch those command lines to use your new path, rather than the old Developer path.
An excellent article from UseYourLoaf
, outlines what needs to be done.
For example I often used the agvtool to manage build version numbers but if you try to run it after installing Xcode 4.3 you will get the following error message:
Error: No developer directory found at /Developer.
Run /usr/bin/xcode-select to update the developer
The xcode-select utility allows you to switch between versions of Xcode which makes it easy to correct the problem:
$ sudo /usr/bin/xcode-select -switch /Applications/Xcode.app
If you are wondering where all of the files that were previously under /Developer have gone you can find them by right-clicking on the Xcode.app file in the Applications folder and showing the package contents. The old /Developer/usr/bin directory is now in /Applications/Xcode.app/Contents/Developer/usr/bin.
Don’t forget to clean up your shell environment if you previously referred to anything under /Developer. So for example, if you added /Developer/usr/bin to your PATH and /Developer/usr/share/man to your MANPATH you will need to prepend /Applications/Xcode.app/Contents to these settings in your shell login script.
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