Xcode 4.2 For Os X Lion

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In OS X Snow Leopard (10.6) I used the following lines in /.bashrc to force compilation with clang instead of standard gcc: # Set Clang as the default compiler for the system export CC=clang export. Oct 12, 2011  Xcode is Apple's package of developer tools for creating both OS X and iOS applications. What's New in Version 4.2 - Includes SDKs for Mac OS X 10.7 Lion and iOS 5. Xcode is the complete toolset for building Mac OS X and iOS applications — and with Xcode 4, the tools have been redesigned to be faster, easier to use, and more helpful than ever before.

Apple has released a minor update to their Xcode development tools today, bringing the version up to 4.2.1. The update addresses various minor bugs, including an issue with missing developer profiles.

This marks the first update to Xcode since Apple released 4.2, a major update, about a month ago, bringing SDKs for OS X Lion and iOS 5, iCloud compatibility, storyboards, and more. Apple’s full release notes for the update follow:

What’s New in Version 4.2.1
This update addresses a number of stability issues, including the following:

– Fixes an issue where the “Convert to Objective-C ARC” operation would not complete.
– Resolves a problem that resulted in no visible developer profiles in the Organizer.
– Corrects an erroneous locked file dialog appearing in the documentation window.

Features and enhancements in previous Xcode updates:

– Xcode 4.2 includes SDKs for Mac OS X 10.7 Lion and iOS 5.
– Storyboards let you design multiple iOS screens, and define the segues among them.
– Automatic Reference Counting (ARC) saves you from manually managing retain/release.
– iCloud entitlements are automatically enabled for Mac and iOS apps.
– OpenGL ES Debugger graphically analyzes your OpenGL scene directly within the IDE.
– Apple LLVM compiler supports C++11 features and the LLVM libc++ standard library.
– Older iOS Simulators and device debugging symbols are downloaded on-demand.
– Interface Builder support for Auto Layout and new Aqua controls such as NSPopover.
– Project editor can validate and resolve out of date build settings.

Xcode provides everything developers need to create great applications for Mac, iPhone, and iPad. Xcode 4 has been streamlined to help you write better apps. It has unified user interface design, coding, testing, and debugging all within a single window. The Xcode IDE analyzes the details of your project to identify mistakes in both syntax and logic, it can even help fix your code for you.

Xcode runs on OS X Lion and includes the Xcode IDE, Instruments, iOS Simulator, the latest Mac OS X and iOS SDKs, and hundreds of powerful features:

Innovative tools to help you create great apps

• Interface Builder is fully integrated as a design canvas within the Xcode IDE
• The Assistant shows files related to what you're editing, such as the header, superclass, or controller
• The Version editor shows a live source code comparison through Git or Subversion history
• Live Issues display errors as you type, and Fix-it can correct the mistakes for you
• Apple LLVM compiler now includes full support for C++, in addition to C and Objective-C
• The new LLDB debugging engine is faster and more memory-efficient than GDB
• Instruments adds System Trace and new iOS instruments including OpenGL ES

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Streamlined interface that is faster and easier to use

• Design your interface side by side with the backing source code
• Create connections from your GUI design directly to the related source code
• Use tabs to organize your workspace, or double-click to open files in a new window
• Schemes let you customize exactly how your app will build, run, profile, and deploy
• Debugging and console views slide in without disturbing your place in the editor

Professional editor keeps you focused on your code

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• Click the Jump Bar at the top of the editor to instantly go to another file
• View message bubbles to see errors, warnings, and other issues right beside the code
• Use the ribbon on the left of the editor to fold your code, or highlight scope

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Embedded Apple LLVM technology finds and fixes bugs for you

• Analyzer travels countless code paths looking for logical errors before they become bugs
• Live Issues underlines coding mistakes as you type with no need to build first
• Fix-it can confidently correct mistakes for you with just a keystroke
• Code completion for C, C++, and Objective-C is incredibly fast and accurate

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Instruments for visual performance analysis

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• Compare CPU, disk, memory, and OpenGL performance as graphical tracks over time
• Identify performance bottlenecks then dive deep into the code to uncover the cause
• Monitor your app directly, or sample the entire system, with very little overhead

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To test or deploy applications on an iOS device you must be a member of Apple's iOS Developer Program. To submit your Mac or iOS apps to the App Store you must be a member of the Mac or iOS Developer Program. Some features may require Internet access.