Re: [ptxdist] year 2038 Toolchain

[Michael Olbrich <m.olbrich@pengutronix.de>]

On Fri, May 24, 2024 at 11:04:24AM +0200, Erwin Rol wrote:
> On 5/24/24 10:41, Ian Abbott wrote:
> 
> > > If I figure it out I'll let you guys know (so it can be added to the
> > > official Toolchain)
> > 
> > Rememember to define _FILE_OFFSET_BITS=64 too if it is not already
> > defined. _TIME_BITS=64 is ineffective when _FILE_OFFSET_BITS=32 for
> > Glibc policy reasons.
> 
> I tried some things to convince the Toolchain project (latest gcc13 release)
> to use those two defines, but without much luck. Sometimes parts complained
> that there were duplicate declarations of (time) functions, with some other
> tries it actually complained the the _FILE_OFFSET_BITS was missing for some
> part, that I really don't understand because I added them always in pairs.
> 
> So I believe it is just a bit too early for 100% year 2038 compliance at the
> moment. Especially when it comes to C++/libstd++ there is also not much info
> online.
> 
> But the C part seems to work with the support ptxdist offers, and C++ has
> always been some unwanted stepchild, especially now Rust is going to safe
> the world :-)

So gcc-14 has a --enable-year2038 configure option, but I didn't test if it
works.

But I don't know if that causes any API or ABI incompatibilities.
The changelog says "Disable year2038 by default on 32-bit hosts.". That
looks a bit suspicious to me.

Michael

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