[MacPorts] #57758: gnudatalanguage @0.9.7: fatal error: '/usr/include/fnmatch.h' file not found

[MacPorts]

#57758: gnudatalanguage @0.9.7: fatal error: '/usr/include/fnmatch.h' file not
found
------------------------------+----------------------
  Reporter:  ryandesign       |      Owner:  tenomoto
      Type:  defect           |     Status:  assigned
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:  mojave
      Port:  gnudatalanguage  |
------------------------------+----------------------

Comment (by tenomoto):

 I have command-line tools installed to have /usr/include. What is the
 right way to provide system headers on Majave? SDK?

-- 
Ticket URL: <https://trac.macports.org/ticket/57758#comment:5>
MacPorts <https://www.macports.org/>
Ports system for macOS