C++26 Systems Programming Language documentation

 

GNU C++ Library (libstdc++)

• C++ std:: Namespace
• C++ Classes
• C++ Class Hierarchy
• GNU C++ Library
• all Files
• all Library Components
• all Namespaces
• all Concepts
• C++ STL Requirements Table

 

GCC Manual

• GCC Overview
• GCC Compiler Internals
• GCC JIT
• GCC Installation
• GCC Wiki

 

GNU libraries

• Shared memory Parallel programing API (GNU Offloading and Multi-processing runtime library)
• ITM (Transactional Memory Library)
• quadmath (Quadratic Precision Math Library)
• Liberty (Liberty Library)
• C pre-processor
• C pre-processor internals

we strongly recommend NOT to use macros in your program. C++26 provides features that make macros nearly redundant.

 

 

GNU g++ compiler

g++ compiler support

• for C++26
• for C++23 cf. cppreference
• for C++26 cf. gcc

g++ compiler invocation for C++ modules based compilation

• g++ -std=c++26 -v -g3
• g++ -std=c++26 -v -g3 -Wall
• g++ -std=c++26 -v -g3 -Wall -Werror
• g++ -std=c++26 -v -g3 -fmodules
• g++ -std=c++26 -v -g3 -fmodules -fmodule-only -x c++-system-header
• g++ -std=c++26 -v -g3 -fmodules -fmodule-only -fsearch-include-path -c bits/std.cc

g++ compiler complete help with all options

• g++ --help -v

 

 

ISO WG21 Working Draft, Standard for C++ Programming Language

• WG21 C++ working draft, format: PDF, generated: 2026-03-28
• WG21 C++ working draft, format: HTML, note: external link

 

C++ Reference

• cppreference.com, maintained by a group of C++ enthusiasts, format: HTML, note: external link

 

Acknowledgements

• A big shout out to the GNU, FSF and free software community contributors for creating the awesome gcc, g++ and libstdc++ software.
• Thanks to Jonathan Wakely for assistance with tools and build-targets that helped generate the documentation.

 

About

 

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updated: 2026-03-28 1200 hrs UTC+0000

 

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