Re: _AC_PROG_CXX_CXX11 is broken in C++20

On 2026-01-20 01:21, Jonathan Wakely wrote:
>> now we have at least three slightly different
>> versions of 2.72 in circulation, generating slightly different
>> 'configure' files, but claiming to be
> (sorry, hit send too soon!)
> 
> ... claiming to be 2.72

I often have that problem, with every Autoconf release. There are often 
niggling little differences with downstream distros.

The hard part for us volunteers is turning the crank, which mostly means 
doing real tests. The incremental amount of work and risk involved with 
all the patches (rather than just the patch you want) is so small that 
we should just do them all. Among other things, we do need the patch 
that updates copyright dates regardless....