Re: time64 / Large File Support: 2) default time64 breaks legacy 32bit binaries

[Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>]

On 27/01/23 20:58, Joseph Myers wrote:
> On Fri, 27 Jan 2023, Paul Eggert wrote:
> 
>> On 2023-01-27 09:40, Adhemerval Zanella Netto wrote:
>>>> Another possibility is to adopt the milder approach for glibc version N,
>>>> and switch to the more drastic approach in glibc version N+1.This would
>>>> give distros time to test this new configure-time option before it's the
>>>> default.
>>> Do you mean add the --enable-hard-sys-types64 on glibc N, and then remove it
>>> on
>>> N+1 and make the 64-bit the default?
>>
>> Sure, that would work. If that's too fast we could do something more gradual,
>> like this:
>>
>> 1. glibc version N supports --enable-hard-sys-types64 and
>> --disable-hard-sys-types64 and the default is disabled.
>>
>> 2. glibc version N+1 is the same, but the default is enabled.
>>
>> 3. glibc version N+2 removes support for --disable-hard-sys-types64;
>> --enable-hard-sys-type64 remains as a no-op.
> 
> One release is an extremely short time period for glibc (six months).  A 
> few years between steps would seem better for something like this.
> 

Between starting add the initial support to override the default 64-bit and making
it the default won't be at least 2 version, so I think the layout plan it feasible.

I try to move this plan forward, I think it past time we move from non-LFS and
32 bit time as default.