std_flags.md

How Do I Change the C++ Standard I'm Using?

You can change your C++ standard using compiler flags or project settings.

Note: Depending on your compiler version, some standards may not be available. Updating to a newer compiler is recommended.

GCC and clang

?inline

• -std=c++98
• -std=c++11
• ...
• -std=c++20
• -std=c++2b
  (2b is working draft C++23)

MSVC

?inline

• /std:c++98
• /std:c++11
• ...
• /std:c++20
• /std:c++latest
  (latest is working draft C++23)

Visual Studio

?inline Project → → Settings → C/C++ → Language → C++ Language Standard

CMake

set_target_properties(my_target PROPERTIES
    CXX_STANDARD 17
    CXX_STANDARD_REQUIRED YES
    CXX_EXTENSIONS NO)

Or globally, for all targets:

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CSS_STANDARD_REQUIRED YES)