This document provides a summary of new and changed product features and includes notices of features and problems that are not described in the product documentation.
These release notes only cover Intel® C++ Compiler Classic.
Intel® Core Features Classic C++ Compiler2021.7.1 (oneAPI-Version 2022.3.1)
Intel® C++ Compiler Classic 2021.7.1 has been updated to include feature and security updates. Users should update to the latest version when it becomes available.
Intel® Core Features Classic C++ Compiler2021.7 (oneAPI-Version 2022.3)
- Problem solving.
The Intel® C++ Classic compiler is out of date and an additional diagnostic message is generated with each call. This diagnostic can affect the expected output during compilation. For example, if you use the compiler to generate preprocessed information (icpc -E), it will generate an additional expiration diagnostic that breaks the expected preprocessed output.
This output can be disabled with -diag-disable=10441 on Linux/macOS or /Qdiag-disable:10441 on Windows. You can add this option on the command line, in the configuration file, or in the environment variables of the options configuration.
Intel® C++ Compiler Classic for macOS relies on installed xcode to detect the necessary headers/libraries. If you run the compiler and the 'xcrun' information has not been initialized, you may encounter the following error (or something similar):
icc: bug #10401: error executing "xcrun --sdk macosx --show-sdk-version"
Rerunning the compiler should make this error go away as the 'xcrun' information is now cached.
NOTICE OF ACKNOWLEDGMENT
Intel® C++ Compiler Classic (icc) is deprecated and will be removed in a oneAPI release in the second half of 2023. Intel recommends that customers now move to using the LLVM-based Intel® oneAPI DPC++/C++ (ICX) compiler for compatibility Continued with Windows* and Linux*, new language support, new language features, and optimizations. Please note that, starting with version 2021.7, macOS* support is limited to Mac* computers with Intel® processors. For more information on icx, seeIntel® oneAPI DPC++/C++ Compiler Developer Guide and Referenceis inPorting guide for users from icc to dpcpp or icx.
Intel® Core Features Classic C++ Compiler2021.6 (oneAPI-Version 2022.2)
- Problem solving.
- A new compiler option "Wcheck-unicode-security" is supported, which determines whether the compiler performs a check of the source code for Unicode vulnerabilities.
Sintaxis sin Linux: -W[no-]check-unicode-security
Sintaxis en macOS (nur Classic C/C++): -W[no-]check-unicode-security
Sintaxis sin Windows: /W[no-]check-unicode-security
Intel® Core Features Classic C++ Compiler2021.5 (oneAPI-Version 2022.1)
- Problem solving
Support for Xcode* 13.1 (on macOS 12.0.1) and Visual Studio* 2019 16.11.6.
Limited support for Microsoft Visual Studio* 2022 Preview Release 17.0 RC3 (Preview 7). Full support for VisualStudio is expected in the next planned release (oneAPI 2022.2).
New C++20 functions supported in/Qstd=c++20(Windows*) o-std=c++20(Linux*/OS X*). verdocumentationunder.
Intel® Core Features Classic C++ Compiler 2021.4
- Problem solving
- Compatibility with Visual Studio* 2019 16.10.3 and Visual Studio* 2017 15.9.34
- Xcode* 12.5 compatibility
Intel® Core Features Classic C++ Compiler 2021.3
- Problem solving
Intel® Core Features Classic C++ Compiler 2021.2.1
- Problem solving
- Support for Microsoft Visual Studio* 201916.9.3. This release fixes calls to the built-in math function that caused linker issues with VS 2019 v16.9.3. This allows Intel® C++ Compiler Classic to work with VS 2019 16.9.3. C++ users with VS 2019 Update 16.9.3 should install this patch to fix the linkage issue.
- This version 2021.2.1 is a PATCH version. If you are using Intel Fortran, DO NOT install this patch version as there is Intel®Classic Compiler and Intel Fortran®Fortran Compiler (Beta) 2021.x installed on your system
- Version 2021.2.1 is a Windows*-only, C++-only, and a fix for Intel® C++ Compiler Classic only. DPC++ and ICX users do not need this version as it does not include any new fixes or features from 2021.2.0.
- Version 2021.2.1 is provided as an online download onlyHERE🇧🇷 This version is not deployed to the Intel® Registration Center or the NuGET repository.
Intel® Core Features Classic C++ Compiler 2021.2
- Support for Alderlake and Sapphire Rapids features via compiler options:
- -m serializar
-marcha=saphirrapids, -xsaphirrapids(Video) Inside New Intel C++ Compiler 16.0
- Solutions for reported problems
New Features at Intel® C++-Compiler-Classic-Patch-Version 2021.1.2
- This 2021.1.2 is a PATCH version. It is not a complete compiler and depends on updating an existing one. It is designed to be installed on top of an existing installation of oneAPI HPC Toolkit 2021.1.1.
- This version of the patch fixes the issue.compiler option --version Incorrect version string. There are no other fixes in this compiler compared to the first build 2021.1.1 compiler.
- When installing a patch release, users must install the latest patches for all compilers they use (Intel Fortran Compiler/Intel DPC++/C++ Compiler/Intel C++ Compiler classic).
- The Intel® CPU Runtime for OpenCL™ applications must also be reinstalled. You can download the Intel® CPU Runtime for OpenCL™ Applications for Windows athere🇧🇷 For Linux, the package is distributed via APT and YUM, please follow the instructions belowInstalling Intel® OneAPI Toolkits via Linux* Package Managersto configure the repository and install the intel-oneapi-runtime-opencl package.
Intel® Core Features Classic C++ Compiler 2021.1
The oneAPI environment module scripts include two new scripts called icc and icc32. These scripts are installed as part of the compiler package. Configures the environment to work with the classic Intel C++ compiler (also known as ICC). These new module archive scripts are compatible with version 3.x and version 4.x of the Tcl Environment Modules implementation and the Lmod implementation of module archives.
- New C++20 functions supported in/Qstd=c++20(Windows*) o-std=c++20(Linux*/OS X*).
- New features of OpenMP 5.0*
- IF clause in SIMD policy
- NO TEMPORARY clause in the SIMD directive
- compiler option --version Incorrect version string
- Solutions for reported problems
How to Install the Classic Intel® C++ Compiler
Installation instructions are provided with all Intel® Software Development Products as part of the documentation. Installation instructions for the latest version of Intel®The oneAPI HPC Toolkit version is also available online. Search the Intel® oneAPI pageinstallation instructions.
How to use Intel® C++ Compiler Classic
- Getting Started with Intel® oneAPI Toolkits for Linux*
- Introduction to Intel® oneAPI Toolkits for Windows*
- Introduction to Intel® oneAPI Toolkits for MacOS*
for details on using Intel®Classic C++ compiler.
Product documentation is available online
Intel® C++ Compiler Classic Developer Guide and Reference
C++20 Features Supported by the Intel® C++ Compiler
Support for macOS 10 has been removed. oneAPI 2022.1 is the last supported version.
Visual Studio* 2017 deprecated in oneAPI 2022.1
IntelCompiler integrations for Microsoft Visual Studio* 2017 are deprecated and will be removed in a future release. Integration support for Visual Studio is limited to two major supported versions of Visual Studio: the current publicly available and supported major version and the previous major version from Microsoft.
Features not supported or discontinued
Removed support for Intel® Xeon Phi™ x200 Knights Landing (KNL) processors, Intel® Xeon Phi™ Knights Mill (KNM) processors, and embedded Yocto targets.
Intel® Xeon Phi™ customers should continue to use compilers, libraries, and tools from Intel® Parallel Studio XE 2020 and older PSXE versions, or Intel® oneAPI Base Toolkit and Intel® oneAPI HPC Toolkit compilers versions 2021.2 or 2021.1.
The loop profiler feature will be removed in future compilers.
The following loop profiler related compiler options are deprecated and will be removed in future compilers
- profile loops=keyword
- profile characteristics
- leadership profile
Removed support for Intel® Cilk™ Plus
Removed ICC compiler option -qnextgen
Removed the use of the qnextgen (Linux) compiler option, /qnextgen (Windows). Use icx instead of icc -qnextgen or icc /qnextgen.
The Intel® C++ compiler (icx) is available as "Intel® oneAPI DPC++/C++ Compiler" in the Intel® oneAPI Base Toolkit version.
The OpenMP download is available as "Intel® oneAPI DPC++/C++ Compiler Pro" in the Intel® oneAPI HPC Toolkit.
Please askIntel® oneAPI DPC++/C++ CompilerRelease notes for new feature in Intel® C++ Compiler (icx) and OpenMP download.
- The OpenMP default loop modifier for shared loop constructs was changed to non-monotone when the scheduling type is dynamic or guided to comply with the OpenMP 5.0 standard. User code that expects monotonic behavior may not work correctly with this change. Users can add the monotonic programming modifier in the programming clause to maintain the behavior of the old code.
Using -Qlong-double on Windows is highly error-prone, since MSVC has never supported long double as an 80-matching FP type. Microsoft math libraries and formatted input and output do not support dual 80-bits .
In addition, the Microsoft C++ standard libraries (libcpmt.lib, libcpmtd.lib) define several symbols that conflict with the standard names of double-extended math functions, for example: frexpl, expl, logl, sinl, cosl, atanl ( and others) . These symbols have double precision (FP64) implementations in Microsoft libraries and extended double precision (FP80) implementations in Intel's math library (libmmt.lib). Because of this, the correct behavior of the FP80's math functions is not guaranteed if libcpmt.lib is linked first. On the other hand, some functions of the Microsoft C++ Standard Library may not work correctly if Intel libmmt.lib is linked first. Due to the fact that symbols like frexpl are defined in the same module as standard C++ functions, link errors have been known to occur in plain C++ programs compiled with the -Qlong-double option; these can be avoided by linking libcpmt.lib before libmmt.lib.
- macOS Big Sur 11 not found
Missing libraries errors like -lSystem not found If you are having problems with ICC not finding Xcode and system libraries, do the following: After installing Xcode, run:
sudo xcode-select -s /Aplicaciones/Xcode.app/Contents/Developer
Then accept the license (only if you haven't already):sudo xcodebuild -license
- "There is no rule to process the file" error in Xcode* 10 and 11macOS* XCode 10 and 11 comes with a new build system and is configured by default. It is currently not supported by the Intel compiler. When compiling an Intel C++ compiler project in XCode, the error "There is no rule to process the file" is displayed. Go to "Legacy Build System" in the project settings to build your project in Xcode.
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Disclaimers and Disclaimers
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No product or ingredient can be absolutely safe.
Your costs and results may vary.
© Intel Corporation. Intel, the Intel logo, and other Intel marks are trademarks of Intel Corporation or its subsidiaries. Other names and marks may be claimed as the property of others.
This document does not grant any license (express or implied, by estoppel or otherwise) to any intellectual property right.
The products described may contain design flaws or errors known as errata that could cause the product to differ from published specifications. Currently highlighted errata are available upon request.
Intel disclaims all warranties, express and implied, including, but not limited to, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranties of performance, course of business, or results of commercial use.
Is the Intel C++ compiler free? ›
Free for all, no royalties, no restrictions on company or project size, access to current & older versions of libraries (only current version for Intel® MPI), Forum Support. Download libraries from repositories: YUM.What is the most common C++ compiler? ›
- Microsoft Visual C++ compiler. This is the C and C++ compiler that Microsoft bundles with Visual Studio. ...
- The GNU compiler collection. The GNU compiler collection, GCC, is one of the most famous open-source tools in existence. ...
- Clang/LLVM. ...
- Intel C++ compiler. ...
- IBM XLC++
It is almost always implemented as a compiled language, and many vendors provide C++ compilers, including the Free Software Foundation, LLVM, Microsoft, Intel, Embarcadero, Oracle, and IBM, so it is available on many platforms.Is there a C++ compiler on Windows? ›
If you want to run C or C++ programs in your Windows operating system, then you need to have the right compilers. The MinGW compiler is a well known and widely used software for installing GCC and G++ compilers for the C and C++ programming languages.Which is the best C++ compiler for beginners? ›
- Visual Studio Code FREE. VS (Visual Studio) Code was formerly only available for Windows, but it is now also available for Mac and Linux as well. ...
- Eclipse FREE version. ...
- NetBeans FREE. ...
- Notepad++ FREE. ...
- CodeLite FREE. ...
- Codeblocks FREE.
C++ Builder is the easiest and fastest C and C++ IDE for building simple or professional applications on the Windows, iOS & Android operating systems. It is also easy for beginners to learn with its wide range of samples, tutorials, help files, and LSP support for code.What is the standard compiler for C++ language? ›
Gnu Compiler Collection: Includes g++, a popular C++ compiler. A build for Windows is available here, builds for other platforms are likely available via your platform's package manager, or you can build it yourself using instructions here.Is GCC and G ++ the same? ›
DIFFERENCE BETWEEN g++ & gcc
g++ is used to compile C++ program. gcc is used to compile C program.
The “Hello World” program is the first step towards learning any programming language and is also one of the simplest programs you will learn. All you have to do is display the message “Hello World” on the screen. Let us now look at the program: CPP.Which C++ compiler should I use? ›
Microsoft C++ Compiler (MSVC)
This is the default compiler for most Visual Studio C++ projects and is recommended if you are targeting Windows. Compiler options for the Microsoft C++ compiler.
Do you need to download C++ compiler? ›
This package is used to compile C++ source code. This is an optional component of the MinGW Compiler. It is only required if you are going to program in C++ language only.Is C++ outdated in 2022? ›
So, the answer is no. C++ isn't going away any time soon. C++ is now one of the most widely used computer languages, with a wide range of applications. Python, Java, and web programming are all intriguing career paths, but C++ programmers are often overlooked and mistakenly believed to be dead.How do I get C++ compiler? ›
Dev C++ If you'd rather use an IDE for C++ development, you can install the devC++ compiler/IDE for windows. Download the exe file from https://bloodshed-dev-c.en.softonic.com/ and follow the instructions there to install it. Installation is pretty straightforward.How do I compile C++ in Windows 10? ›
Open a developer command prompt
If you have installed Microsoft Visual C++ Build Tools 2015 on Windows 10 or later, open the Start menu and choose All apps. Scroll down and open the Visual C++ Build Tools folder. Choose Visual C++ 2015 x86 Native Tools Command Prompt to open the command prompt window.
- Click on save button to save. By default, it is saved in “Downloads” folder.
- After the download completes, go to the saved .exe file and click on it to Run.
- The installer will ask you a language to select. Select “English” and click on “OK”.
It takes around 1 to 3 months to learn the basics and syntax of C++ programming. Gaining mastery in the C++ programming language can take around 2 years.Which is the best free IDE for C++? ›
- #1) C++Builder.
- #2) Visual Studio Code.
- #3) Eclipse.
- #4) Codelite.
- #5) Atom.
- #6) CLion.
- #7) Emacs.
- #8) Notepad++
Based on the powerful editing component Scintilla, Notepad++ is written in C++ and uses pure Win32 API and STL which ensures a higher execution speed and smaller program size.Is there a basic compiler for Windows 10? ›
PowerBASIC for Windows is a native code compiler for all versions of Windows, from Windows 95 to Windows 10. It creates standard Windows GUI (graphical user interface) applications. It creates highly efficient executables and industry-standard DLLs for optimum flexibility.Is GCC a C++ compiler? ›
The GNU Compiler Collection, commonly known as GCC, is a set of compilers and development tools available for Linux, Windows, various BSDs, and a wide assortment of other operating systems. It includes support primarily for C and C++ and includes Objective-C, Ada, Go, Fortran, and D.
Do I need Microsoft Visual C++ x64 and x86? ›
Both the x86 and x64 versions are needed on 64-bit systems. Only the x86 versions will work on 32-bit systems.Is G ++ A C++ compiler? ›
g++ command is a GNU c++ compiler invocation command, which is used for preprocessing, compilation, assembly and linking of source code to generate an executable file.What version of C++ does GCC use? ›
GCC supports different dialects of C++, corresponding to the multiple published ISO standards. Which standard it implements can be selected using the -std= command-line option. C++98 − GCC has full support for the 1998 C++ standard as modified in 2003 and renamed to C++03 and some later defect reports. C++11 − GCC 4.8.Which IDE is used for C++? ›
Microsoft Visual C++ is the fully-featured IDE that works for Windows, iOS & Android platforms and allows building applications in C++, C#, node. js, python, etc. This IDE is the most popular C++ compiler cum IDE in the software industry today.Can I use GCC for C++? ›
GCC, formerly for "GNU C Compiler", has grown over times to support many languages such as C ( gcc ), C++ ( g++ ), Objective-C, Objective-C++, Java ( gcj ), Fortran ( gfortran ), Ada ( gnat ), Go ( gccgo ), OpenMP, Cilk Plus, and OpenAcc. It is now referred to as "GNU Compiler Collection".Is GCC written in C or C++? ›
The GNU Compiler Collection (GCC) was, from its inception, written in C and compiled by a C compiler. Beginning in 2008, an effort was undertaken to change GCC so that it could be compiled by a C++ compiler and take advantage of a subset of C++ constructs.How old is GCC? ›
When it was first released in 1987 by Richard Stallman, GCC 1.0 was named the GNU C Compiler since it only handled the C programming language.Is C++ easier or Python? ›
Python's syntax is a lot closer to English and so it is easier to read and write, making it the simplest type of code to learn how to write and develop with. The readability of C++ code is weak in comparison and it is known as being a language that is a lot harder to get to grips with.How can I practice C++ at home? ›
- Write a program in C++ to print a welcome text in a separate line. ...
- Write a program in C++ to print the sum of two numbers. ...
- Write a program in C++ to find Size of fundamental data types. ...
- Write a program in C++ to print the sum of two numbers using variables.
The easiest way to learn C++ is to sign up for an in-depth course that can teach you everything you need to know to master C++. Can you teach yourself C++? Yes, you can teach yourself C++, especially if you're already familiar with coding. However, it may take longer than attending a course, for example.
Are all C++ compilers the same? ›
The differences between compilers in C++ are very large in number . Few of them are : Optimization - routines are completely different. Clang/LLVm or Visual C++ are good for link-time optimization.Which C++ is the best? ›
Dev C++, an open-source IDE, is considered by some to be one of the best C++ IDEs. However, it can be used only on Windows and macOS. It has features like code completion, tool manager, integrated debugging, syntax highlighting, GCC-based compilers, and profiling.Is C++ faster than C++? ›
Performance is slow compared to C++. C++ language is an object-oriented programming language, and it supports some important features like Polymorphism, Abstract Data Types, Encapsulation, etc. Since it supports object-orientation, speed is faster compared to the C language.Is C++ installed on my computer? ›
Open Add and Remove Programs and look for Microsoft Visual C++ Redistributable. The installed versions will be listed there.What is the hardest programming language? ›
Haskell. The language is named after a mathematician and is usually described to be one of the hardest programming languages to learn. It is a completely functional language built on lambda calculus.Is C++ poorly designed? ›
Criticism of C++ Although C++ is one of the most widespread programming languages, many prominent software engineers criticize C++ (the language, and its compilers) for being overly complex and fundamentally flawed.Is C++ worth learning anymore? ›
Is it worth learning C++? We believe it is. Despite its complexity and maturity C++ is still widely used in professional projects. Programs written in this language are faster and consume less memory than programs written in high level languages.Does Windows 10 come with C++? ›
No, Windows 10 doesn't have any Visual C++ runtimes pre-installed, you need to install them one by one from Microsoft website. Don't only install the latest version, install all of them.How do I know if C++ compiler is installed on Windows? ›
Open command prompt (Type “cmd” in search box). 8. Type “gcc –version” in command prompt to check whether C compiler is installed in your machine. Type “g++ –version” in command prompt to check whether C++ compiler is installed in your machine.Which Visual C++ should I install for Windows 10? ›
Visual Studio 2015, 2017, 2019, and 2022
It also includes the latest C++ standard language and library standards conformance updates. We recommend you install this version for all applications created using Visual Studio 2015, 2017, 2019, or 2022.
Can C++ run on Windows 11? ›
Windows C++ Does Not Work with Windows 11.How can I download C++ compiler for free? ›
This free C++ compiler can be downloaded from Embarcadero's Official Web Page : https://www.embarcadero.com/free-tools/ccompiler. The free C++ Compiler download includes: Embarcadero C++ Compiler (bcc32c/bcc32x)Can I use C++ Builder for free? ›
Shared free of charge with our community of freelance developers, startups, students and non-profits, C++Builder Community Edition is a full featured IDE for building iOS and Windows apps from a single modern C++ codebase (limited commercial use license).Is C++ programming free? ›
8. Learn C++ (LearnCpp.com) LearnCpp.com is a free website that teaches the basics of C++. You'll explore the context around what C++ is, how it came about, how programs work, and what software you need to install to create your own programs, and then learn the steps of writing, compiling, and debugging C++ programs.Is C++ free to use? ›
C++ is a general-purpose, free-form programming language created by Bjarne Stroustrup in 1979 at Bell Labs in Murray Hill, New Jersey, as an enhancement to the C language.What is the best free C++ compiler? ›
🚀 Which are the Best C++ IDE?
- Visual Studio Code.
Notepad++ can be used as a simple lightweight C++ IDE. Another great IDE is Notepad++. It is a free source code editor for C and C++ development and supports several highlighting programming languages.Which software is best for C++ coding? ›
- Visual Studio. Visual Studio is a full-featured C++ IDE that allows developers to build C++ and C# apps. ...
- Eclipse. Eclipse is a popular open-source IDE that you can use to develop C++ applications using Eclipse's C/C++ development tools. ...
- NetBeans. ...
- Visual Studio Code. ...
Both the x86 and x64 versions are needed on 64-bit systems. Only the x86 versions will work on 32-bit systems.Is coding C++ hard? ›
C++ is known to be one of the most difficult programming languages to learn over other popular languages like Python and Java. C++ is hard to learn because of its multi-paradigm nature and more advanced syntax.
Is C++ better than Python? ›
C++ is faster than Python because it is statically typed, which leads to a faster compilation of code. Python is slower than C++, it supports dynamic typing, and it also uses the interpreter, which makes the process of compilation slower.Is C++ still worth? ›
C++ is an Efficient and Fast Language
Some programming languages are also faster than C++. Still, like C++, they are not close to the machine code, as it is an intermediary language, so big organizations rely on C++ for fast speed with lesser resources. Now, you will move to the next reason to learn C++ in 2023.
Most experts will tell you that Java is easier to learn. It's a newer language than C++ and isn't as complex in its principles or execution. However, there's more to consider than a language's learning curve. Selecting a programming language comes down to what you want to do with it.Why is C++ not used? ›
Since C++ is closer to C than high-level languages, the code is rather detailed. Therefore, it can be hard for developers to orient in large projects. Slower development times. It is reasonably faster to use high-level languages like Java and Python for creating applications.