[MacPorts] #58925: octave +fltk @5.1.0_1 build failure: ld: framework not found OpenGL

[MacPorts]

#58925: octave +fltk @5.1.0_1 build failure: ld: framework not found OpenGL
---------------------+---------------------------------
  Reporter:  prbuen  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  octave  |
---------------------+---------------------------------

Comment (by prbuen):

 I do have `/usr/include`, which was created by installing the system
 headers with
 `/Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg`.
 Which includes do you think should be there but are not?

 I am working from a fresh install of everything on Mac OS 10.14. The only
 unusual thing for MacPorts is that I didn't install XCode, only command
 line tools. But usually everything works ok except for compiling Aqua
 GUIs.

 The flag `-syslibroot` is added to `FLTK LDFLAGS`, but not `-isysroot`
 indeed. Would e.g. reinstalling `ld64` from source help? Is there a way I
 could simply add this flag somewhere?

-- 
Ticket URL: <https://trac.macports.org/ticket/58925#comment:4>
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