Re: [PATCH v2] Use LFS and 64 bit time for installed programs (BZ #15333)

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

On 28/12/2021 17:37, Florian Weimer wrote:
> * Adhemerval Zanella via Libc-alpha:
> 
>> The installed programs are built with a combination of different
>> values for MODULE_NAME, as below.  To enable both Long File Support
>> and 64 bt time, -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64 is added for
>> nonlibi, nscd, lddlibc4, libresolv, ldconfig, locale_programs,
>> iconvprogs, libnss_files, libnss_compat, libnss_db, libnss_hesiod,
>> libutil, libpcprofile, and libSegFault.
> 
> -D_TIME_BITS=64 does not work for building glibc because the internal
> aliases such as __fstat64 do not follow _TIME_BITS and are hard-wired to
> 32-bit time.  A symptom is a broken ldconfig, e.g.:
> 
> $ elf/ldconfig -p
> elf/ldconfig: mmap of cache file failed.
> : Invalid argument

I think the real problem is the usage of internal symbol in installed
binaries, it works for LFS stat because they are either redirected to
compat xstat ones or __stat (which I think it is also error prone).

I am fixing it by using the default stat names, installed programs 
should not use proper LFS and time64.