[sr #111111] AC_SYS_LARGEFILE system wide control and autoconf releases

Follow-up Comment #1, sr #111111 (group autoconf):

The cache variables for AC_SYS_LARGEFILE aren't documented, so they aren't
part of the stable API.

In Autoconf 2.71 they were ac_cv_sys_largefile_CC, ac_cv_sys_file_offset_bits,
ac_cv_sys_large_files. In bleeding-edge Autoconf things are simpler: they are
ac_cv_sys_year2038_opts and ac_cv_sys_largefile_opts. You can of course set
both sets of cache variables, if you want a cache that works for both
bleeding-dege and 2.71 or earlier.

Not sure it's a good idea to document these cache variables, as things are
likely to mutate even further in this area (2038 is coming soon! :-) and I
don't see ordinary users wanting their values directly. But at least the above
paragraph should help you attack the particular problem you face.


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