[MacPorts] #55748: rsgislib @2.1.20140825_3: build failure, update problems with Boost

[MacPorts]

#55748: rsgislib @2.1.20140825_3: build failure, update problems with Boost
-----------------------+----------------------
  Reporter:  ForTozs   |      Owner:  Veence
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.4.2
Resolution:            |   Keywords:  haspatch
      Port:  rsgislib  |
-----------------------+----------------------

Comment (by ForTozs):

 I managed to get it installed. Turns out my boost had the +gcc7 variant.
 I'm not sure if this is automatically selected when I have gcc7 selected
 with gcc_select, or if I had overlooked rebuilding with the default
 compiler. Setting:

 {{{
 sudo port select gcc mp-gcc5
 }}}

 and rebuilding boost/cgal/rsgislib fixed my issue. Thanks again.

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Ticket URL: <https://trac.macports.org/ticket/55748#comment:3>
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