[MacPorts] #59440: gsl @2.6: fatal error: 'gsl/gsl_block_char.h' file not found

[MacPorts]

#59440: gsl @2.6: fatal error: 'gsl/gsl_block_char.h' file not found
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  Reporter:  ryandesign  |      Owner:  daitakahashi
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.2
Resolution:              |   Keywords:
      Port:  gsl         |
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Comment (by paumard):

 Well, actually that works for me and that should work: make is in block/
 when this error occurs, the include flags contain "-I.." (as well as
 "-I."), and gsl/gsl_block_char.h does exist.

 I'm at a loss as to what's going on here.

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Ticket URL: <https://trac.macports.org/ticket/59440#comment:1>
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