I had lipo on my command-line - I think as a left-over from XCode 3.2. I removed that old version today and now my scripts using LIPO=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/lipo don't work!
Where can I find the location of Lipo now I'm using XCode 4/5? Will it be installed by default, or do I have to get an extra toolset from Apple? I noticed that XCode builds are still creating unified libs OK.
Apple moved the whole /Developer structure inside the app bundle. Everything that was in /Developer is now in Xcode.app/Contents/Developer.
The path to lipo would now be /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/lipo
You can use xcode-select to get the path to lipo of the current Xcode version (useful if you use beta versions, because you can use xcode-select to switch between release and beta version without changing your scripts):
LIPO=`xcode-select -p`/Platforms/iPhoneOS.platform/Developer/usr/bin/lipo
And if you install the Xcode Command Line Tools you will have a lipo in your system path (i.e. /usr/bin/lipo), so you don't need to create those path variables at all. The command line tools download should be available in the Downloads tab of Xcodes Preferences panel.