Mountain Lion asking for Xcode

[Jeremy Lavergne]

> I've got command-line tools installed for xcode (https://developer.apple.com/downloads/index.action#) , but I keep getting errors saying xcode isn't installed and I need to run xcode-select. Shouldn't it be sufficient just to have the command-line tools? 

Some packages require Xcode to be present, since they are xcodeprojects or have bugs depending on which version of xcode is being used.

> So far I've just ignored the warnings, but the zlib port won't even install.
> 
> :error:extract org.macports.extract for port zlib returned: unable to find Xcode
> :debug:extract Error code: NONE
> :debug:extract Backtrace: unable to find Xcode
> 
> is full xcode really necessary?

You can trick zlib into building, but you'll likely run into some other port later on that truly needs Xcode to build.