[MacPorts] #49613: root6 upgrade fails

[MacPorts]

#49613: root6 upgrade fails
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  Reporter:  david.w.watson@…  |      Owner:  macports-tickets@…
      Type:  defect            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.3.4
Resolution:                    |   Keywords:
      Port:  root6             |
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Comment (by jonesc@…):

 Do you have one of the MacPorts gcc ports 'port selected' to make it your
 default 'gcc' ? If so this appears to be the problem, as it appears the
 internal build of GSL, which I switched to for this version due to the
 fact ROOT does not yet support GSL 2.0 which MacPorts now uses, and during
 configure the internal GSL is discovering your gcc version and this is
 causing problems.

 The work around is please un-select MacPorts gcc version, upgrade ROOT,
 then select it again. I was able to reproduce your failure by port
 selecting myself, and un-selecting it fixes things.

 This is a bug in ROOT's build system, as it should configure its internal
 GSL version to build using the same compiler settings as ROOT itself.
 Please file this as a bug against ROOT upstream, as it is not a bug in the
 MacPorts port. I am hoping the next release will contain support for GSL
 2.0, in which case I can revert back to using MacPorts version.

 Chris

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Ticket URL: <https://trac.macports.org/ticket/49613#comment:1>
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