How to enable C++17 compiling in Visual Studio?
There's now a drop down (at least since VS 2017.3.5) where you can specifically select C++17. The available options are (under project > Properties > C/C++ > Language > C++ Language Standard)
- ISO C++14 Standard. msvc command line option:
/std:c++14
- ISO C++17 Standard. msvc command line option:
/std:c++17
- The latest draft standard. msvc command line option:
/std:c++latest
(I bet, once C++20 is out and more fully supported by Visual Studio it will be /std:c++20
)
MSBuild (Visual Studio project/solution *.vcproj/*.sln):
Add to Additional options in Project Settings: /std:c++latest
to enable latest features - currently C++17 as of VS2017, VS2015 Update 3.
https://blogs.msdn.microsoft.com/vcblog/2016/06/07/standards-version-switches-in-the-compiler/
/permissive-
will disable non-standard C++ extensions and will enable standard conformance in VS2017.
https://blogs.msdn.microsoft.com/vcblog/2016/11/16/permissive-switch/
EDIT (Oct 2018): The latest VS2017 features are documented here:
https://docs.microsoft.com/en-gb/cpp/build/reference/std-specify-language-standard-version
VS2017 supports: /std:[c++14|c++17|c++latest]
now. These flags can be set via the project's property pages:
To set this compiler option in the Visual Studio development environment
- Open the project's Property Pages dialog box. For details, see Working with Project Properties.
- Select Configuration Properties, C/C++, Language.
- In C++ Language Standard, choose the language standard to support from the dropdown control, then choose OK or Apply to save your changes.
CMake:
Visual Studio 2017 (15.7+) supports CMake projects. CMake makes it possible to enable modern C++ features in various ways. The most basic option is to enable a modern C++ standard by setting a target's property in CMakeLists.txt:
add_library (${PROJECT_NAME})
set_property (TARGET ${PROJECT_NAME}
PROPERTY
# Enable C++17 standard compliance
CXX_STANDARD 17
)
In the case of an interface library:
add_library (${PROJECT_NAME} INTERFACE)
target_compile_features (${PROJECT_NAME}
INTERFACE
# Enable C++17 standard compliance
cxx_std_17
)
Visual Studio 2015 Update 3 does not support the C++17 feature you are looking for (emplace_back()
returning a reference).
Support For C++11/14/17 Features (Modern C++)
C++11/14/17 Features In VS 2015 RTM
VS 2015 Update 2’s STL is C++17-so-far Feature Complete
Visual Studio 2015 Update 3
STL Fixes In VS 2015 Update 3