[MacPorts] #73393: pkgconf always reports incorrect cflags for gnutls

[MacPorts]

#73393: pkgconf always reports incorrect cflags for gnutls
--------------------------+---------------------------------
  Reporter:  OpenSauce04  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.11.6
Resolution:               |   Keywords:
      Port:  pkgconf      |
--------------------------+---------------------------------

Comment (by kaniini):

 As an aside, if you are using LIBRARY_PATH in the environment, pkgconf
 will pick up on that and exclude those paths from -L output.

 It also picks up on CPATH, C_INCLUDE_PATH and CPLUS_INCLUDE_PATH and
 excludes -I output respectively.  So this means that if they are there,
 pkgconf will not include those paths in its output, as it is assumed that
 the toolchain will also be aware of these environment variables.

 In that case, setting the default paths to an empty string might work, and
 this may just be a bug in the emacs port.

-- 
Ticket URL: <https://trac.macports.org/ticket/73393#comment:7>
MacPorts <https://www.macports.org/>
Ports system for macOS