Its successor Mac OS X 5 also ran on PowerPC when it first launched; it wasn’t until 10.4 that Apple began to switch to Intel processors instead, and 10.6 when PowerPC was finally dropped. Mac OS X was a huge step forward from Mac OS 9 in a number of ways, including preemptive multitasking so that you could actually run multiple things at.

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• Cocoa Recipes for Mac OS X is a great guide for anyone interested in writing applications for MAC OS X. It is chocked full of USEFUL real-life programming examples. Each chapter successively builds upon the last to churn out and refine a true to the bone Mac OS X application.
• OS X provides many built-in features and assistive technologies that help users with special needs benefit from the Mac. OS X also provides software developers with the functions they need to create apps that are accessible to all users. Apps that use Cocoa interfaces receive significant support for accessibility automatically.
• COCOA® PROGRAMMING FOR MAC® OS X FOURTH EDITION Aaron Hillegass Adam Preble Upper Saddle River, NJ. Boston. Indianapolis. San Francisco New York. Toronto. Montreal.

cocoaModem 2.0

cocoaModem is a Mac OS X application which implements modems (modulator-demodulators) for some of the Amateur Radio modulation modes. cocoaModem’s name is a reference to the MacOS X Cocoa framework that it uses.
The cocoaModem application is free and can be downloaded from the Downloads tab at the top of this page. cocoaModem is built as a Universal Binary and runs natively on both Intel based and PowerPC based Macintosh computers and is localized for Japanese Mac OS X.
An online User's Manual is available through the User's Manual tab above. The What's New page lists what has changed since the previously released version of cocoaModem.
cocoaModem 2.0 works under Mac OS X 10.4 (Tiger), Mac OS X 10.5 (Leopard), Mac OS X 10.6 (Snow Leopard) and Mac OS X 10.7 (Lion).

cocoaModem 2.0 currently supports the following modulation modes and interfaces

• RTTY (AFSK or FSK)
  
  basic RTTY interface
  narrowband two-receiver RTTY interface
  wideband two-receiver RTTY interface
  
  
  
• PSK
  
  BPSK31
  QPSK31
  BPSK63
  QPSK63
  BPSK125
  QPSK125
  
  
  
• MFSK
  
  MFSK16
  DominoEX 4
  DominoEX 5
  DominoEX 8
  DominoEX 11
  DominoEX 16
  DominoEX 22
  
  
  
• Hellschreiber
  
• CW
  
  wideband two-receiver CW interface
  
  
  
• ASCII Radioteletype
  
• SITOR-B reception
  
• HF-FAX reception
  
• Synchronous AM reception
  

There is also a basic contest interface in cocoaModem for the RTTY and PSK modes. The contest interface is not meant for serious contesting; it provides a simple interface for casual exchanges in a contest and provides Cabrillo export for a few digital mode contests.
Nao, JF1WWZ created the Japanese translation and localization files.
For addtional information on Push-to-Talk (PTT), please refer to this page.

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cocoaModem started out as a program for me to work RTTY and PSK modes using Mac OS, and it grew into a software platform that I use for other DSP and user interface experiments.
Some demodulation algorithms (such as the multiple soft decoders in RTTY) and user interfaces (such as the 'click buffer') are unique to cocoaModem, but you will at the same time not find every one of the major digital modes used in Amateur Radio implemented here.
cocoaModem is neither a supported product

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nor a finished product. I try to keep the documentation up to date so that others can also use the application if they have similar requirements and equipment setups as mine. For those that don't have the same requirements, the source code for cocoaModem is open for anyone to make modifications for themselves. Please consider each release of cocoaModem simply as a checkpoint of the code that I am continuously experimenting with.
In addition to the application itself, the source code for the application and cocoaModem's frameworks (under Creative Commons copyright) are also available free for non-commercial use. The cocoaModem Xcode project with sources is available through the download page..
cocoaModem 2.0 requires at least MacOS X 10.4 (Tiger) to function properly, and continues to work with Mac OS X 10.5 (Leopard), Mac OS X 10.6 (Snow Leopard) and Mac OS X 10.7 (Lion).
Older versions of cocoaModem are available for use with the older MacOS X 10.2 (Jaguar) and MacOS X 10.3 (Panther) operating systems, but they do not incorporate all the features mention in the current manual. You can find them in the same download page that was mentioned above.

Mac OS X is a UNIX platform and behaves similar to other Unix-like platforms. The main difference is X11 is not used as the primary windowing system. Instead, Mac OS X uses its own native windowing system that is accessible through the Carbon and Cocoa APIs. Application development on Mac OS X is done using Xcode Tools, an optional install included on every Mac with updates available from Apple's developer website. Xcode Tools includes Apple-modified versions of the GCC compiler.

What Versions of Mac OS X are Supported?

As of Qt 4.7, Qt supports Mac OS X versions 10.4 and up. It is usually in the best interest of the developer and user to be running the latest updates to any version. We test internally against Mac OS X 10.4.11 as well as the updated release of Mac OS X 10.5 and Mac OS X 10.6.

Carbon or Cocoa?

Qt supports building in two flavors, using either the Carbon or Cocoa API. Using the Cocoa API, Qt requires 10.5 and provides both 32-bit and 64-bit support. With Carbon, Qt can be developed on and deployed to 10.4, but there is no 64-bit support.

Note: There is no accessibility support in the Cocoa version. This is planned for Qt 4.8.

With Qt 4.7 we recommend using the Cocoa version of Qt for development, unless you want to target the 10.4 platform. Qt uses Cocoa by default, both for the binary package and when configuring Qt from source (using the configure script). To build Qt for Carbon, specify the -carbon flag to configure.

There are two versions of the Qt binary, one with x86 and x86_64 Cocoa and another with x86 and ppc Carbon. If you want a different setup you must build Qt yourself using the source package. To explicitly configure Qt to build for 34-bit or 64-bit architectures (or both), use the -arch flags (see Universal Binaries). For the Cocoa version, 64 bit is chosen by default.

Currently, Apple's default GCC compiler is used by default (GCC 4.0.1 on 10.4 and 10.5, GCC 4.2 on 10.6). You can specify alternate compilers though. For example, on Mac OS X 10.5, Apple's GCC 4.2 is also available and selectable with the configure flag: -platform macx-g++42. LLVM-GCC support is available by passing in the -platform macx-llvm flag. GCC 3.x will not work. Though they may work, We do not support custom-built GCC's.

The following table summarizes the different versions of Mac OS X and what capabilities are used by Qt.

Mac OS X Version	Cat Name	Native API Used by Qt	Bits available to address memory	CPU Architecture Supported	Development Platform
10.4	Tiger	Carbon	32	PPC/Intel	Yes
10.5	Leopard	Carbon	32	PPC/Intel	Yes
10.5	Leopard	Cocoa	32/64	PPC/Intel	Yes
10.6	Snow Leopard	Cocoa/Carbon	32	PPC/Intel	Yes
10.6	Snow Leopard	Cocoa	64	Intel	Yes

Note that building for ppc-64 is not supported on 10.6.

Which One Should I Use?

Carbon and Cocoa both have their advantages and disadvantages. Probably the easiest way to determine is to look at the version of Mac OS X you are targetting. If your application can target 10.5 and up, then we recommend using Cocoa. If you need to target earlier versions of the operating system and do not need access to 64-bit or newer Apple technologies, then Carbon is a good fit. If your needs fall in between, you can go with a 64-bit Cocoa and 32-bit Carbon universal application.

For Mac OS X 10.6, Apple has started recommending developers to build their applications 64-bit. The main reason is that there is a small speed increase due to the extra registers on Intel CPU's, all their machine offerings have been 64-bit since 2007, and there is a cost for reading all the 32-bit libraries into memory if everything else is 64-bit. If you want to follow this advice, there is only one choice, 64-bit Cocoa.

Building Qt statically

We recommend building Qt as shared frameworks. Static builds are only partially supported, meaning that you can build most of Qt statically, but some modules, like web-kit and Designer, will fail. You can specify which modules to build from configure (e.g. -no-webkit -nomake tools). For Cocoa configurations, both static and no-framework builds requires manually copying the 'src/gui/mac/qt_menu.nib/ directory into the ' Resources' directory in the application bundle.

Universal Binaries

In 2006, Apple begin transitioning from PowerPC (PPC) to Intel (x86) systems. Both architectures are supported by Qt. The release of Mac OS X 10.5 in October 2007 added the possibility of writing and deploying 64-bit GUI applications. Qt 4.5 and up supports both the 32-bit (PPC and x86) and 64-bit (PPC64 and x86-64) versions of PowerPC and Intel-based systems.

Universal binaries are used to bundle binaries for more than one architecture into a single package, simplifying deployment and distribution. When running an application the operating system will select the most appropriate architecture. Universal binaries support the following architectures; they can be added to the build at configure time using the -arch arguments:

Architecture	Flag
Intel, 32-bit	-arch x86
Intel, 64-bit	-arch x86_64
PPC, 32-bit	-arch ppc
PPC, 64-bit	-arch ppc64

If there are no -arch flags specified, configure builds Qt for a 32-bit architecture when using Carbon, and a 64-bit architecture when using Cocoa. Universal binaries were initially used to simplify the PPC to Intel migration. You can use -universal to build for both the 32-bit Intel and PPC architectures.

Note: The -arch flags at configure time only affect how Qt is built. Applications are by default built for the 32-bit architecture you are currently on. To build a universal binary, add the architectures to the CONFIG variable in the .pro file:

Working with several versions of Qt

You can only install one version of Qt at a time when using the binary package. The reason for this is that a binary installation will install different parts of Qt (frameworks, documentation, examples, tools, etc) to different predefined locations on the OS, as described by Apple. If you want to work against other versions at the same time, you need to build the other versions explicitly from source. When doing so, you can provide -prefix to configure to set install location. The binary package will install Qt to the following locations:

Qt	Location
Designer, Linguist ...	/Developer/Applications/Qt
Documentation	/Developer/Documentation/Qt
Examples	/Developer/Examples/Qt
Plugins	/Developer/Applications/Qt/Plugins
Frameworks	/Library/Frameworks
Libraries	/usr/lib
qmake, moc, uic ...	/Developer/Tools/Qt (symlink to /usr/bin)
uninstall-qt.py, uninstall-qtsdk.py	/Developer/Tools

Day-to-Day Application Development on OS X

On the command-line, applications can be built using qmake and make. Optionally, qmake can generate project files for Xcode with -spec macx-xcode. If you are using the binary package, qmake generates Xcode projects by default; use -spec macx-gcc to generate makefiles.

The result of the build process is an application bundle, which is a directory structure that contains the actual application executable. The application can be launched by double-clicking it in Finder, or by referring directly to its executable from the command line, i. e. myApp.app/Contents/MacOS/myApp.

If you wish to have a command-line tool that does not use the GUI (e.g., moc, uic or ls), you can tell qmake not to execute the bundle creating steps by removing it from the CONFIG in your .pro file:

Deployment - 'Compile once, deploy everywhere'

In general, Qt supports building on one Mac OS X version and deploying on all others, both forward and backwards. You can build on 10.4 Tiger and run the same binary on 10.5 and up.

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Some restrictions apply:

• Some functions and optimization paths that exist in later versions of Mac OS X will not be available if you build on an earlier version of Mac OS X.
• The CPU architecture should match.
• Cocoa support is only available for Mac OS X 10.5 and up.

Universal binaries can be used to provide a smorgasbord of configurations catering to all possible architectures.

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Mac applications are typically deployed as self-contained application bundles. The application bundle contains the application executable as well as dependencies such as the Qt libraries, plugins, translations and other resources you may need. Third party libraries like Qt are normally not installed system-wide; each application provides its own copy.

The most common way to distribute applications is to provide a compressed disk image (.dmg file) that the user can mount in Finder. The Mac deployment tool (macdeployqt) can be used to create the self-contained bundles, and optionally also create a .dmg archive. See the Mac deployment guide for more information about deployment. It is also possible to use an installer wizard. More information on this option can be found in Apple's documentation.

© 2016 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.