My Xcode only allows me to select Mac OS X 10.7 as the earliest Base SDK.Is it possible to install additional base SDKs?

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For systems running Mac OS X Maverick (10.9), Yosemite (10.10), El Capitan(10.11) or any future updates of Mac OS, can download it separately if they are not into iOS or Mac OS development or do not want to install the entire Xcode suite. Relatively they are much smaller in storage size compared to installing the entire Xcode suite. Shine in the Dark. Code you write in Xcode looks stunning as the dark Xcode interface makes your work the star of the show. The entire interface is tuned for your dark Mac experience, from icons, to fonts, to the subtle contrast color of the Jump Bar. Shine in the Dark. Code you write in Xcode looks stunning as the dark Xcode interface makes your work the star of the show. The entire interface is tuned for your dark Mac experience, from icons, to fonts, to the subtle contrast color of the Jump Bar.
Dimitris
2 Answers
I found an old version of Xcode 4.3 on one of my backup disks and dragged a copy of:
to:
It now sits along side the MacOSX10.7.sdk and MacOSX10.8.sdk, which were already there. They came with Xcode 4.4.
I'm running Xcode Version 4.4 (4F250) and OS X 10.8.
After restarting Xcode, remember to go into build settings and set the Base SDK to OS X 10.6 if it defaulted to 'Current OS X' and your project requires the 10.6 sdk.

Is there a reason you need the 10.6 SDK? If you set the deployment target to 10.6, you can use the 10.7 SDK and your app will run on 10.6, assuming you're not using anything added in 10.7.
Mark Szymczyk