C++ Compiler For Mac

Apple’s Xcode development system is superb for developing applications, but sometimes you just want to write C or C++ code for research or school. Composing a serious chunk of code with

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Join Troy Miles for an in-depth discussion in this video Installing C compiler on a Mac, part of C IDE Overview. Lynda.com is now LinkedIn Learning! OnlineGDB is online IDE with C compiler. Quick and easy way to compiler c program online. It supports g compiler for c. May 20, 2009  i have been scouting the internet for the past few days trying to find a good c compiler for mac os x leopard. I heard xcode had a good compiler program on it and is on the installation disc the came with my macbook. But in order for me to use it, i need to downgrade my system to tiger. And i can't join the apple development site cause i'm not yet a college student and i dont work for any. The native compilers are gcc and llvm which are part of the XCode environment. While the compilers are free, the latest IDE is not but can be bought from the app store for something like $5.99 $4.99. C compiler for mac free download - Intel C Compiler Professional, Pro Fortran Compiler Suite, PayMaker Mac OS X, and many more programs.

vi is no longer acceptable,* so users in this frame of mind are now using Eclipse, a modern IDE, that’s also free. Here’s how to get gcc without installing Apple’s Xcode and then install Eclipse for C/C++ programming.

What’s the Motivation?

At work recently, my wife was chatting with a colleague who was taking his first C++ class. She taught him how to use Eclipse on a Mac, even though he resisted at first. However, later, he came back and commented that the other students were trying to manage ever increasingly complex projects with the vi editor. It was taking them four, six, or even 20 hours in some cases to complete their homework each week. He finished his, typically, in 30 minutes. That’s the power of an IDE with a modern debugger. That last item, the debugger, can’t be emphasized enough. Print statements in your code are oh, so yesteryear with a tool like this. Time is money, and efficiency reflects on you as a programmer.

So if you’re a scientist, researcher or engineer who wants to write some research code, not intended as a GUI app, in Java, C, C++ or Fortran, you need to dump vi as an editor* (or Emacs or Nedit or whatever) immediately and get with this kind of IDE. Things are moving far too fast nowadays not to make this important move. (Clearly, I’m speaking to an older crowd here.**)

To be perfectly clear, Apple’s Xcode is a fabulous development system for C, C++, Objective-C and even Fortran 77***. You can build native OS X and iOS apps. But many researchers and scientists aren’t interested in Xcode. They’ve come from a Linux or other UNIX platform, like IBM’s AIX, and they just want to carry on their research in Eclipse on a Mac. This how-to is primarily for them. But, as I mentioned above, students who are taking their first programming class and own a Mac will also find this discussion useful — indeed mandatory. Remember, this is an introduction to whet your appetite and get you launched, not a complete Eclipse tutorial.

Also, this how-to for the sake of simplicity focuses on C/C++, but Eclipse can handle a myriad of languages, including, but not limited to, Java and Fortran. Let’s start with C/C++.

Getting the gcc Compiler

As an aside, when you install Apple’s Xcode (free from the Mac App Store only in Lion), gcc is automatically installed in /usr/bin. But if you have a mind to work with just Eclipse and gcc, you’ll need a way to install gcc without, if it pleases you, installing Apple’s Xcode first. (For reference, here’s a how-to on installing Xcode and gcc.)

There are at least two places I know of where you can get a gcc installer package for OS X:

• Developer Tools 4.0 Source
• The OS X High Performance Computing page at Sourceforge managed by Dr. Gaurav Khanna at the University of Mass.

If you find other sources, let us know.

Installing Eclipse

Here’s a handy reference on where to get Eclipse for the Mac. Version 3.7 (“Indigo”) installs nicely in Lion and seems to work okay, but our household hasn’t put it to a grueling acid test with OS X 10.7.1.Eclipse Download for CC++, 64-bit

The download is a …tar.gz file, so move it where you want the Eclipse directory to be because when you double click it, the package will be unzipped and untared right there. After Eclipse is installed, you’ll see it as an app, just like any other, with this icon.

It’s easy to create an alias to eclipse.app, if you wish, and place it in your /Application directory. Because the Eclipse IDE itself is written in Java, if you’re running a clean copy of Lion, you’ll need to download the Java runtime before the Eclipse app will launch. Just double-click on Eclipse, and it’ll trigger the required Java runtime download. Nothing else to do. If you’re in Snow Leopard, the Java runtime is already there.

Java runtime download

This first thing you’ll see when you run Eclipse is that it asks for the location of your workspace. I typically create a directory in /Users/john called Programming where I do any code development. (Which is not much these days.)

Workspace Selection

After you select your workspace, you’ll be confronted with an Eclipse peculiarity. A welcome page will be launched that brings a real feeling of WTF to many users. Here it is.

Welcome screen

The trick is to realize that the icon on the far right, circled in red above, takes you into the workbench. For that named workspace, this one time is the only time you’ll see that screen.

Once the IDE is launched, there are just a few details before you can build a project. Again, for simplicity, lets stay with C/C++. From the Eclipse File menu, select “New” and then C++ Project.

Eclipse - New Project

Experienced Eclipse users know the drill. Name the project, make sure you’ve identified the location of your compiler in the Toolchain, and so on. (It may be different than the default install by Apple’s Xcode. The screen shot below shows Apple’s install of gcc, marked as MacOSX GCC, because I’d previously installed Xcode on that Mac.)

Configuration

Newbies may want to select the Hello World project just to see how things get set up. Make sure you work your way through the setup with Next > at the bottom and don’t click the Finish button too soon. A more detailed examination of this set up and the ins-and-outs of Eclipse are beyond the scope of this getting started article. The goal here is simply an introduction for Mac users. And you’re not alone. There’s a huge body of knowledge on the Internet about Eclipse. Here’s a start.

If all went well, you’ll be in the Eclipse IDE with the Hello World program in the editor and a Make file already created. This environment is called the Eclipse workbench.

Eclipse Workbench w/ default “Hello World” code

It may take you some start-up time to learn Eclipse, but trust me, coding the old way will soon bog you down. The Xcode and Eclipse developers learn from each other, so if you ever decide to get into OS X or iOS development, having earned your wings in Eclipse will pay huge dividends later.

__________________

* I’m qualified to say this because I’ve lived and breathed vi for a living in the past.

** Remember, a lot of people are going back to school, learning or refreshing their programming skills.

*** You can write and compile Fortran 77 in Xcode with standard output, but you can’t access the Cocoa APIs and build native apps in F77.

By Jennifer J., published on February 16, 2016, updated August 24, 2016

This document provides a summary of new and changed product features and includes notes about features and problems not described in the product documentation.

Please see the licenses included in the distribution as well as the Disclaimer and Legal Information section of these release notes for details. Please see the following links for information on this release of the Intel® C++ Compiler 17.0.

Change History

This section highlights important from the previous product version and changes in product updates.

Changes in Update 5 (Intel® C++ Compiler 17.0.5)

• Fixes for reported problems

Changes in Update 4 (Intel® C++ Compiler 17.0.4)

• Support Xcode* 8.3
• Fixes for reported problems

No Update 3 Release

• There was no Update 3 Release

Changes in Update 2 (Intel® C++ Compiler 17.0.2)

• Support macOS* 10.12.1 Xcode* 8.2
• Fixes for reported problems

Changes in Update 1 (Intel® C++ Compiler 17.0.1)

• Support macOS* 10.12 and Xcode* 8.0
• Fixes for reported problems

Changes since Intel® C++ Compiler 16.0 (New in Intel® C++ Compiler 17.0)

System Requirements

• A 64-bit Intel®-based Apple* Mac* system host (development for 32-bit is still supported)
• 2GB RAM minimum, 4GB RAM recommended
• 3GB free disk space
• One of the following combinations of mac OS*, Xcode* and the Xcode SDK:
  • OS X* 10.11, macOS* 10.12
  • Xcode* 7.x, 8.0
• If doing command line development, the Command Line Tools component of Xcode* is required

Note: Advanced optimization options or very large programs may require additional resources such as memory or disk space.

How to use the Intel® C++ Compiler

Parallel Studio XE 2017: Getting Started with the Intel® C++ Compiler 17.0 for mac OS* at <install_dir>/documentation_2017/en/compiler_c/ps2017/get_started_mc.htm contains information on how to use the Intel® C++ Compiler from the command line and from Xcode*.

Documentation

Product documentation is linked from <install-dir>/documentation_2017/en/compiler_c/ps2017/get_started_mc.htm. Full documentation for all tool components is available at the Intel® Parallel Studio XE Support page.

Intel-provided debug solutions

• Intel®-provided debug solutions are based GNU* GDB. Please see Intel® Parallel Studio XE 2017 Composer Edition C++ - Debug Solutions Release Notes further information.

Samples

Product samples are now available online at Intel® Software Product Samples and Tutorials

Technical Support

If you did not register your compiler during installation, please do so at the Intel® Software Development Products Registration Center at http://registrationcenter.intel.com. Registration entitles you to free technical support, product updates and upgrades for the duration of the support term.

For information about how to find Technical Support, Product Updates, User Forums, FAQs, tips and tricks, and other support information, please visit: http://www.intel.com/software/products/support/
Note: If your distributor provides technical support for this product, please contact them for support rather than Intel.

New and Changed Features

The following features are new or significantly enhanced in this version. For more information on these features, please refer to the documentation.

KNL and Atom targets unsupported on OS* X. Disabled options on OS* X are the following:

• -xATOM_SSE4.2
• -xATOM_SSSE3 –xBETA_B
• -xMIC-AVX512 -xBETA_R3 –xKNL

The same options with –ax will be disabled too. Driver should issue error message in case any of these options are used on OS* X.

A list of compiler header files are moved to a subfolder of existing include folder. There is no change needed to source code that uses the C++ Compiler headers. The new subfolder will be searched during compilation automatically by the compiler driver.

• For C++ AOS layout, there is no existing language extensions for programmers to annotation the AOS->SOA conversion to minimize gather/scatter generation while vectorizing the SIMD loop/functions.
• SDLT primitive template V2 supports n-D Containers; it is designed and implemented by using C++11 feature which supports a set of primitives/methods to convert n-D AOS layout to n-D SOA layout.

Support for more new features from OpenMP* 4.0 or later

• Support for #pragma omp for linear (list [ : linear-step ])
  • where list is either list or modifier(list)
• Support for ref, val, and uval modifiersfor the linear clause
  • Examples: linear(ref(p)), linear(val(i):1), linear(uval(j):1)
• Support for #pragma omp simd simdlen(n)
• Support for #pragma omp ordered [simd]
• Reductions over whole arrays: int x[n]; #pragma omp simd reduction(+:x)
• Intel® processor clause extension added to #pragma omp declare simd (proposed; not officially part of OpenMP* 4.5)
• support for clauses SIMD and NONMONOTONIC modifiers for #pragma omp for schedule :
  • The Intel® C++ Compiler 17.0 include SIMD and NONMONOTONICmodifiers extenstion to schedule clause to enhance user control of how interations of the for loop are divided among threads of team. See the Intel® C++ Compiler User’s Guide for more details.
• support for array sections as list items in the reduction clause
  • reduction(reduction-identifier:list) If a list item is an array section, it is treated as if reduction clause is applied to each seperate element of the section. The elements of the private array sections will be allocated contiguously

Annotated source listing

• This feature annotates source files with compiler optimization reports. The listing format may be specified as either text or html. The location where the listing appears can be specified as the caller site, the callee site, or both sites.

New attribute, pragma, and compiler options for code alignment

• New attribute __attribute__((code_align(n))) is provided to align functions to a power-of-two byte boundry n
• New pragma #pragma code_align [(n)] is provided to align the subsequent loop head to a power-of-two byte boundry n
• New compiler option -falign-loops[=n] is provided to align all loops to a power-of-two byte boundry n, or to provide no special alignment for loops -fno-align-loops (the default)

C++14 features supported

The Intel® C++ Compiler 17.0 supports the following features with compiler option /Qstd:c++14 (Windows*) or -std=c++14 (Linux*/macOS*)

• Support C++14 variable templates (N3651)
• Support C++14 relaxed (aka extended) constexpr (N3652)
• Support C++14 sized deallocation (N3663)
• Please see C++14 Features Supported by Intel® C++ Compiler for an up-to-date listing of all supported features, including comparisons to previous major versions of the compiler.

C11 features supported

The Intel® C++ Compiler 17.0 supports the following features with compiler option /Qstd:c11 (Windows*) or -std=c11 (Linux*/macOS*)

• Support for all C11 features except C11 keyword _Atomic and __attribute((atomic))
• Please see C11 Support in Intel® C++ Compiler for an up-to-date listing of all supported features, including comparisons to previous major versions of the compiler.

-ansi-alias compiler option is now the default

• -ansi-alias is now the compilation default. This option tells the compiler to assume that the program adheres to ISO C Standard aliasability rules. If your program does not adhere to ANSI aliasability rules, this option may cause the compiler to generate incorrect code. In this case, you can specify -no-ansi-aliasto ensure program correctness.

New and Changed Compiler Options For details on these and all compiler options, see the Compiler Options section of the Intel® C++ Compiler 17.0 User's Guide.

• -f[no-]align-loopsAligns loops to a power-of-two byte boundary.
• -fp-model consistentEnables consistent, reproducible results for different optimization levels or between different processors of the same architecture
• -qopt-report-annotateEnables the annotated source listing feature and specifies its format
• -qopt-report-annotate-position[=keyword]Enables the annotated source listing feature and specifies the site where optimization messages appear in the annotated source in inlined cases of loop optimizations.

For a list of deprecated compiler options, see the Compiler Options section of the Intel® C++ Compiler 17.0 User's Guide.

Compiler options starting with –o are deprecated
All compiler options starting with –o are deprecated. These will be replaced by new options preceded with –q. For example, -opt-report should now be –qopt-report. This is to improve compatibility with third-party tools that expect –o<text> to always refer to output filenames.

Change in defualt behatviour of offload DEFAULTMAP

DEFAULTMAP (TOFROM:SCALAR) Local scalars do not offload by default, need “default map: scalar” clause
Causes a scalar variable to be treated as if it appeared in a MAP clause with a map-type of TOFROM . If this clause is not specified, a scalar variable is not mapped; instead it has an implicit attribute of FIRSTPRIVATE . At most one DEFAULTMAPclause can appear in the directive.

Open MP helper thread removed

The openMP monitor thread which was used for book-keeping during program execution has been removed. However, the thread itself is user-visible with Vtune or other tools.

You can tune the zmm code generation done by the compiler with the new additional option -qopt-zmm-usage:low|high. The argument value of low provides a smooth transition experience from - Intel® Advanced Vector Extensions 2 (Intel® AVX2) ISA to Intel® Advanced Vector Extensions 512 (Intel® AVX-512) ISA on a Intel® Xeon® Platinum processor (formerly code name Skylake), such as for enterprise applications. Tuning for ZMM instruction use via explicit vector syntax such as #pragma omp simd simdlen() is recommended. The argument value of high is recommended for applications, such as HPC codes, that are bounded by vector computation to achieve more compute per instruction through use of the wider vector operations. The default value is low for Skylake server microarchitecture-family compilation targets and high for Intel® Core™ /Intel® Many Integrated Core Architecture (Intel® MIC Architecture) Intel® AVX-512 combined compilation targets.

Support Removed

Support for installation on OS X 10.10 or earlier has been removed

Support has been removed for installation and use on these operating system versions. Intel recommends migrating to a newer version of these operating systems.

Known Limitations

Support for OS X* 10.11

• OS X* 10.11 introduces a new security policy called System Integrity Protection (SIP). This significantly impacts certain installation scenarios. Please see OS X* 10.11 Support in Intel® Parallel Studio XE 2016 for important information before attempting to install on OS X* 10.11

Xcode* requires explicit acceptance of Intel bundle at startup for integration to be installed
Beginning with Xcode* 6.3.2, the IDE integration for Intel® Parallel Studio XE does not complete installation until the next time Xcode is started after completing the product installation. When Xcode* is started, you will see a dialog:

The dialog is titled “Unexpected code bundles”, and mentions that Xcode found one or more code bundles not provided by Apple. It then has two buttons, one to “Load Bundles” and one to “Skip Bundles”. “Load Bundles” is required to be clicked to complete the Intel Parallel Studio XE IDE integration. Clicking “Skip Bundles” will cause the Intel tools to not be selectable in Xcode*.

Incompatible with the default libc++ library
Some applications are incompatible with libc++, which is currently enabled as default C++ library in the Intel® C++ Compiler 17.0. For example, the 435.gromacs and 447.dealII from SPEC CPU2006 suite.
Please use -stdlib=libstdc++ to compile such applications.

Creating new project in Xcode* causes hardcoding of –stdlib=libc++
A new project created in Xcode* causes the hardcoding of a setting for -stdlib=libc++ even for projects that have the Intel® C++ Compiler toolset added. So setting the Intel® C++ Compiler field for the C++ Standard Library setting to libstdc++ is ineffective because libc++ overrides the setting. To change this, do the following:
1. Select the project row in the navigator area at the left of the workspace window
2. In the project editor that appears, select the row that represents the project level of build settings
3. You should see the C++ Standard Library setting in bold, indicating that it has a custom value in this project
4. Select that row and press the Delete key to remove the customized value
5. The C++ Standard Library build property should now have the value Compiler Default
Note that you may have to follow the above steps before adding the Intel® C++ Compiler toolset to your project build rules.

Building Tachyon
For building from Xcode*, you may run into problems building the build_with_tbb configuration with llvm gcc*. The problem will be that the libtbb.dylib cannot be found. In this case, go to the Summary->Linked Frameworks and Libraries section, and manually add the libtbb.dylib library from the <install-dir>/tbb/lib directory

Spurious error when a call to a template dependent function is made in a decltype expression in an out-of-line definition for a late-specified return type

• This is a known regression in Intel® C++ Compiler 16.0 Update 2. An example is:
• To work around this problem, the definition can be moved inline, or the use of a late-specified return type should be avoided (by explicitly declaring the return type).

Boost issue with c++14 relaxed constexpr

• If you are using Boost in -std=c++14 mode and you see compilation errors that seem to be related to the constexpr feature, try defining BOOST_NO_CXX14_CONSTEXPR in boost_1_59_0/boost/config/compiler/gcc.hpp. To do this you should change these lines (around line 256):

• #if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
  # define BOOST_NO_CXX14_CONSTEXPR
  #endif

  to:

  //#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
  # define BOOST_NO_CXX14_CONSTEXPR
  //#endif

.

Disclaimer and Legal Information

Optimization Notice

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice. Notice revision #20110804

INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL(R) PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS OTHERWISE AGREED IN WRITING BY INTEL, THE INTEL PRODUCTS ARE NOT DESIGNED NOR INTENDED FOR ANY APPLICATION IN WHICH THE FAILURE OF THE INTEL PRODUCT COULD CREATE A SITUATION WHERE PERSONAL INJURY OR DEATH MAY OCCUR.

Intel may make changes to specifications and product descriptions at any time, without notice. Designers must not rely on the absence or characteristics of any features or instructions marked 'reserved' or 'undefined.' Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them. The information here is subject to change without notice. Do not finalize a design with this information.

The products described in this document may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request.

C++ Compiler For Mac Download

Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.

Copies of documents which have an order number and are referenced in this document, or other Intel literature, may be obtained by calling 1-800-548-4725, or go to: http://www.intel.com/design/literature.htm

Intel processor numbers are not a measure of performance. Processor numbers differentiate features within each processor family, not across different processor families. Go to:

The Intel® C++ Compiler is provided under Intel's End User License Agreement (EULA).

Please consult the licenses included in the distribution for details.

Intel, Intel logo, and Cilk are trademarks of Intel Corporation in the U.S. and other countries.

* Other names and brands may be claimed as the property of others.

Copyright © 2016 Intel Corporation. All Rights Reserved.

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