Re: Glibc on target 32 bits with 64-bit time support

[Lukasz Majewski <lukma@denx.de>]

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Hi Alain,

> Hi Florian
> 
> OK, that means that since glibc 2.34, glibc automatically recognizes
> whether the time_t structure is 32 or 64 bits.
> 
>  And therefore only the applications must be recompiled with the
> flags "-D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64" ).
> 
> 
> This is correct ?

In principle yes.

Please find some extra information regarding glibc integration with 64
bit time support.

https://github.com/lmajewski/meta-y2038#readme

> 
> 
> De : Florian Weimer <fweimer@redhat.com>
> Envoyé : lundi 15 mai 2023 22:12
> À : Alain GUILLEMOT <alain.guillemot@asn.com>
> Cc : libc-help@sourceware.org
> Objet : Re: Glibc on target 32 bits with 64-bit time support
> 
> * Alain GUILLEMOT: > In which file I have to add the option
> "-D_FILE_OFFSET_BITS=64 > -D_TIME_BITS=64", or are these options to
> be passed on the command > line? All ABI variants are automatically
> built. You don't have to do anything
> 
> 
> * Alain GUILLEMOT:
> 
> 
> 
> > In which file I have to add the option "-D_FILE_OFFSET_BITS=64  
> 
> > -D_TIME_BITS=64", or are these options to be passed on the command  
> 
> > line?  
> 
> 
> 
> All ABI variants are automatically built.  You don't have to do
> anything
> 
> while building glibc.  These flags are for building applications with
> 
> glibc.
> 
> 
> 
> Thanks,
> 
> Florian
> 
> 




Best regards,

Lukasz Majewski

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