In article <nnd$15de9d74$69aba32d@91e4ec1203dca4f9>,
Luuk <luuk@invalid.lan> wrote:
...

from: https://stackoverflow.com/a/68545455/724039
C++20 features are available since GCC 8.

To enable C++20 support, add the command-line parameter

-std=c++20

For G++ 9 and earlier use

-std=c++2a

Or, to enable GNU extensions in addition to C++20 features, add

-std=gnu++20

Thanks. That was very helpful.

--
A 70 year old man who watches 6 hours of TV a day, plays a lot of golf
and seems to always be in Florida is a retiree, not a president.

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On 27-7-2024 18:36, Kenny McCormack wrote:

In article <66a350e9$0$706$14726298@news.sunsite.dk>,
Aharon Robbins <arnold@skeeve.com> wrote:
...

My system complains about -std=c++20 so I cannot test it. (I think
I'll wait for a native C release.)

That will be a while. It's not hard to build current GCC from scratch
on a Linux system.

I doubt that. I wouldn't have the first clue about how to do it, and I'm certainly no Linux newbie.

Maybe it (getting/building GCC) should be part of your "bootstrap" script?

Also, is there an easy way to find out if your current GCC is "good enough" ?

The system I am typing this on says it has GCC 9.4? Will that work?

from: https://stackoverflow.com/a/68545455/724039
C++20 features are available since GCC 8.

To enable C++20 support, add the command-line parameter

-std=c++20

For G++ 9 and earlier use

-std=c++2a

Or, to enable GNU extensions in addition to C++20 features, add

-std=gnu++20

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