Aug 26, 2021 · I encountered a compilation error when using g++ (I tried versions 8 to 11) with -std=gnu++17 but the same code can be compiled using the option -std=c++17. #include <complex.h> int main() { int I=0; return I; } With the option -std=gnu++17, this leads to …

Mar 21, 2025 · GCC has almost full support for the 2017 revision of the C++ standard. The status of C++17 library features is described in the library documentation. C++17 mode is the default since GCC 11; it can be explicitly selected with the -std=c++17 command-line flag, or -std=gnu++17 to enable GNU extensions as well.

Feb 23, 2020 · To enable C++17 support, add the command-line parameter -std=c++17 to your g++ command line. Or, to enable GNU extensions in addition to C++17 features, add -std=gnu++17." you can try: sudo yum install g++5.0.

GCC 8.x (and later) fully supports all of C++17. GCC 7.x supports all of C++17 except for class template argument deduction. GCC 6.x (and earlier) has little or no support for C++17 features. Thanks @JanVanDijk for the link to the full feature table. …

Dec 4, 2019 · To enable C++17 support, add the command-line parameter -std=c++17 to your g++ command line. Or, to enable GNU extensions in addition to C++17 features, add -std=gnu++17. The following table lists new language features that have been accepted into the C++17 working draft.

Nov 28, 2018 · 这段代码是检测系统编译器支持的C++标准，那么问题来了，gnu++17和c++17有什么区别呢？实际编译时是有如下两种写法： $ g++-7 const4.cpp --std=gnu++17 $ g++-7 const4.cpp --std=c++17 区别-std=c++11，支持C++11标准；-std=gnu++11，支持C++11标准和GNU扩展特性； 那么gnu扩展特性有哪些？

Aug 6, 2021 · C++17 is now the default version in the GNU Compiler Collection. Find out what you need to know when updating your code to C++17 with GCC 11.

Since GCC 9, C++17 support is no longer experimental. It was too late to change the default C++ dialect to C++17 in GCC 10, but I think now it's time to pull the trigger (C++14 was made the default in GCC 6.1). We're still missing two C++17 library features, but that shouldn't stop us.

May 12, 2021 · After the update CMake no longer sets the right command line option for the c++ standard. Here is how I set it: and then I link to the project_options. With GCC 8.3 (on rhel) this sets the std compile flag to -std=gnu17. Now it is set to -std=c++11. If I set the compiler globally it works as expected: What am I missing?

C++17 is a version of the ISO/IEC 14882 standard for the C++ programming language. C++17 replaced the prior version of the C++ standard, called C++14, and was later replaced by C++20.