[Bug 1521172] [NEW] [Ubuntu 16.04] Use glibc-2.23 in Ubuntu 16.04

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glibc-2.23 will introduce an important ABI change for Power. It will be
a prerequisite for __builtin_cpu_is() and __builtin_cpu_supports() in
gcc.


The __builtin_cpu_is () / __builtin_cpu_supports()  are required to bring Power on-par with Intel regarding CPU and capability identification during runtime, allowing our customers to optimize their code path to the Power processor they are running on.

These gcc builtins will be disabled when the binary is built against a
glibc older than 2.23, making glibc-2.23 a requirement for this feature
to work.


This version of glibc will be released in early February/2016.

** Affects: glibc (Ubuntu)
     Importance: Medium
     Assignee: Adam Conrad (adconrad)
         Status: Triaged


** Tags: architecture-ppc64le bot-comment bugnameltc-133658 severity-medium targetmilestone-inin1604
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[Ubuntu 16.04] Use glibc-2.23 in Ubuntu 16.04
https://bugs.launchpad.net/bugs/1521172
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