OSX 10.7 Precompile Errors in new Xcode Projects

Question

I'm trying to build a new Xcode project targeting the 10.7 Mac SDK (and using llvm 3.1) and am getting a lot of parse errors during the precompile phase.

All of the Cocoa Foundation files are causing parse errors e.g.

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CFString.h:525:174: error: expected function body after function declarator

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CFError.h:68:43: error: expected ';' after top level declarator CF_EXPORT const CFStringRef kCFErrorURLKey CF_AVAILABLE(10_7, 5_0); // Key to identify associated URL in userInfo. Typically one of this or kCFErrorFilePathKey is provided.

If I switch back to using 10.6 everything seems to compile and run fine.

I've attempted to remove and re-install dev tools using:

sudo /Developer/Library/uninstall-devtools -mode=all

... and then re-installing Xcode 4.3.1, but my 10.7 builds of any new project still fail.

Has anyone seen a similar issue with Xcode 4.3+ and the 10.7 SDK. And what other steps should I try and take to clean/install the dev tools/Xcode?

I've uploaded the build log to http://pastebin.com/ahYzhrww.

Answer 1

I ran into this not too long ago. These steps resolved it for me:

• Remove Xcode.app from /Applications
• Rename /Developer to /Devoper-old
• Reinstall Xcode from the Mac App Store.

In XCode, open the Xcode menu and choose Open Developer Tools, More developer tools...

to download the rest of the developer tools.