[Bug 1702917] [NEW] [Feature] P9: Power9 CPU tuned libraries

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glibc provides minimal support for POWER9 since version 2.23.
 glibc 2.25 is the first version to provide POWER9 optimizations via
 STT_GNU_IFUNC. The optimizations are enabled by default and will be disabled
 when using --disable-multi-arch (notice that multi-arch in glibc context is
 not the same thing as used by Debian).
 
 However, this feature request is proposing to provide a second glibc build,
 configured with --with-cpu=power9 and co-installed with the default glibc
 build, but under $(LIBDIR)/power9.
 Other distros usually install these under /lib64/power9.  Ubuntu may need to
 use a different directory due to supporting Debian's multiarch.
 
 The support for this is known to work upstream since glibc 2.23.
 So, I think this is just pending changes in the distro build system.

** Affects: glibc (Ubuntu)
     Importance: Undecided
     Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
         Status: New


** Tags: architecture-ppc64le bugnameltc-145024 severity-low targetmilestone-inin1710
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[Feature] P9:  Power9 CPU tuned libraries
https://bugs.launchpad.net/bugs/1702917
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