[CMake] -std=c++17 vs -std=c++1y

[Jean-Michaël Celerier]

Note that c++17 is c++1z. c++1y was C++14.



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Jean-Michaël Celerier
http://www.jcelerier.name

On Sun, May 6, 2018 at 5:00 PM, Andrew Brownsword <
andrew.e.brownsword at gmail.com> wrote:

> Hi,
>
> Is there a way to get cmake 3.11 to emit 17 vs 1y when setting
> CMAKE_CXX_STANDARD?  I’m finding that it seems to be a common practice to
> use the value of the preprocessor define __cplusplus (which is a date), and
> the value differs depending on whether 17 or 1y is used (at least with
> CLang).  I haven’t figured out how to get cmake to emit -std=c++17, it
> always seems to use 1y, which is causing problems with code that assumes
> the __cplusplus date reflects the c++17 standardization date.
>
> Thanks,
>    Andrew
>
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