[MacPorts] #65153: nss fails to build for x86_64 on 10.6.8: no such instruction: `pclmulqdq $16, %xmm2, %xmm0'

MacPorts noreply at macports.org
Tue May 10 11:47:22 UTC 2022


#65153: nss fails to build for x86_64 on 10.6.8: no such instruction: `pclmulqdq
$16, %xmm2,%xmm0'
---------------------------+---------------------------------
  Reporter:  barracuda156  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.2
Resolution:                |   Keywords:  x86_64, snowleopard
      Port:  nss           |
---------------------------+---------------------------------

Comment (by barracuda156):

 Apparently this is where it has been broken:

 {{{

     -  Bug 805604 - Support for AES-NI and AVX accelerated AES-GCM was
 contributed by Shay Gueron of
       Intel. If compiled on Linux systems in 64-bit mode, NSS will include
 runtime detection to
       check if the platform supports AES-NI and PCLMULQDQ. If so, NSS uses
 the optimized code path,
       reducing the CPU cycles per byte to 1/20 of what was required before
 the patch
       (https://bugzilla.mozilla.org/show_bug.cgi?id=805604 and
       https://crypto.stanford.edu/RealWorldCrypto/slides/gueron.pdf).
 Support for other platforms,
       such as Windows, will follow in a future NSS release.
       (https://bugzilla.mozilla.org/show_bug.cgi?id=540986)
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/65153#comment:3>
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