Question about glibc issue

Florian Weimer fweimer@redhat.com
Mon Jul 27 20:00:02 GMT 2026


* Adhemerval Zanella Netto via Libc-help:

> There is no need build *glibc* with -D_FILE_OFFSET_BITS=64 nor
> -D_TIME_BITS=64, these flags are meant to be used by applications.
> The 64-bit time_t support is provided by default for glibc 2.34+,
> although not enable by default.

Just to clarify, the time64 support is always built into glibc itself.
It's just opt-in (for older 32-bit architectures) when building
applications.

Thanks,
Florian



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