Re: No macro for C11/C18?

[Paul Eggert]

On 1/24/20 12:06 PM, Christian Biesinger wrote:
So I guess I need to decide whether to write my own macro, settle for
C99, or copy the unreleased autoconf one.

Another possibility is to use Gnulib's std-gnu11 module, which writes 
the macro for you.