Re: Using std::popcout in a GR 3.10 block

This was solved in chat via some hints from Ryan.

In short, I was wrong thinking that GR was using C++20 by default, and had to set it.

I did in lib/CMakeLists.txt near the target definition:

On Friday, July 8, 2022, 7:09:14 PM EDT, David Cherkus <dcherkus@yahoo.com> wrote:

So, am working with a new C++ OOT I just made under GR 3.10 using gr_modtool.

All the code created by gr_modtool compiled fine.

I added a header file that uses std::popcout and got the compiler error:

error: 'popcount' is not a member of 'std';

So std::popcout is a C++20 feature... Is there something I need to do in the cmake files to tell it to use C++20?  I thought GR 3.10 did use it by default?  How do I check what version the compiler is configured for?

Regards,
Dave