PowerPC 64-bit time_t

[Nathan Whitehorn]

On 06/09/16 12:31, Brooks Davis wrote:
> On Thu, Jun 09, 2016 at 01:41:52PM -0400, Justin Hibbits wrote:
>> At the devsummit earlier today I mentioned for FreeBSD 12 wanting 64-
>> bit time_t across the board.  It was pointed out that the only ones
>> with 32-bit time_t are i386 and powerpc (32-bit).  I've made the
>> changes necessary for at least kernel (world is still building right
>> now), but it's obviously an ABI and KBI incompatible change.
>> Addressing KBI is a nonissue, as that's expected to break at major
>> releases.  ABI is another issue.  I'm unsure how to properly address
>> ABI breakage -- bumping libc's .so version, or reversion all symbols
>> that use something with time_t, or something else.  If I can address
>> it before the code freeze, it could be done for FreeBSD 11, which
>> leaves about 6 hours from now.
> For i386, the only practical option is going to be a new TARGET_ARCH and
> likely ELF machine type.
>
> For powerpc, I'd be tempted to just break the ABI and leave a way to switch
> it back for people who build products where the ABI change is an issue.
>
> -- Brooks
  I would agree with this.
-Nathan