[MacPorts] #55730: smartmontools @6.6.0 needs new variant(s) for older systems

[MacPorts]

#55730: smartmontools @6.6.0 needs new variant(s) for older systems
----------------------------+----------------------
  Reporter:  MartySkinner   |      Owner:  RJVB
      Type:  defect         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.4.2
Resolution:                 |   Keywords:
      Port:  smartmontools  |
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Comment (by MartySkinner):

 Replying to [comment:2 RJVB]:
 > Strange though, the configure help text suggests this option is for
 future versions.
 The help text does not seem to do the option justice: without one of the
 forms of the option the build summarily fails in my environment. Likely
 never was noticed during the porting before because the system had c++11
 available to it.

 I know nothing about it, yet the port for gsmartcontrol includes a
 {{{PortGroup cxx11 1.1}}} statement. Maybe that could help simplify things
 here too—if not now, then for later versions of smartmontools?
 >
 > A propos NVMe:
 >
 > {{{
 > EXPERIMENTAL.  NVMe devices are not yet included in smartd.conf
 > 'DEVICESCAN' and 'smartctl --scan' unless '-d nvme' is specified.
 > }}}
 >
 > I think it's clear that we don't need this - yet. Will such devices even
 ever be supported on Mac?
 As I stated originally, I didn't actually test a build without this...
 admittedly I just wanted to get a successful build. :) Configure may
 succeed without it.

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Ticket URL: <https://trac.macports.org/ticket/55730#comment:5>
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