[MacPorts] #37505: blt: build fails with tcl 8.6

[MacPorts]

#37505: blt: build fails with tcl 8.6
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  Reporter:  ryandesign@…  |      Owner:  markd@…
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.1.2
Resolution:                |   Keywords:  haspatch
      Port:  blt           |
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Comment (by howarth@…):

 There are a couple additional errors in the current blt packaging...[[BR]]
 [[BR]]
 1) the blt build isn't parallel safe (see fink packaging)[[BR]]
 2) the library/Makefile.in  and man/Makefile.in aren't patched to add
 __DESTROOT__

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Ticket URL: <https://trac.macports.org/ticket/37505#comment:8>
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