[MacPorts] #57734: grass7 @7.4.3 is not using the right compiler

[MacPorts]

#57734: grass7 @7.4.3 is not using the right compiler
-------------------------+--------------------
  Reporter:  ryandesign  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  grass7      |
-------------------------+--------------------

Comment (by ryandesign):

 [https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/83333/steps
 /install-port/logs/stdio Here is a build log of 7.8.3] that shows the
 issue has not yet been resolved:

 {{{
 cc -dynamiclib -compatibility_version 7.8 -current_version 7.8
 -install_name /opt/local/share/grass78/lib/libgrass_datetime.7.8.dylib -o
 /opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_gis_grass7/grass7/work/grass-7.8.3/dist.x86_64
 -apple-darwin17.7.0/lib/libgrass_datetime.7.8.dylib
 -L/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_gis_grass7/grass7/work/grass-7.8.3/dist.x86_64
 -apple-darwin17.7.0/lib
 -L/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_gis_grass7/grass7/work/grass-7.8.3/dist.x86_64
 -apple-darwin17.7.0/lib -L/opt/local/lib -Wl,-headerpad_max_install_names
 -framework OpenCL -arch x86_64    OBJ.x86_64-apple-darwin17.7.0/between.o
 OBJ.x86_64-apple-darwin17.7.0/change.o OBJ.x86_64-apple-
 darwin17.7.0/copy.o OBJ.x86_64-apple-darwin17.7.0/diff.o OBJ.x86_64-apple-
 darwin17.7.0/error.o OBJ.x86_64-apple-darwin17.7.0/format.o OBJ.x86_64
 -apple-darwin17.7.0/incr1.o OBJ.x86_64-apple-darwin17.7.0/incr2.o
 OBJ.x86_64-apple-darwin17.7.0/incr3.o OBJ.x86_64-apple-
 darwin17.7.0/local.o OBJ.x86_64-apple-darwin17.7.0/misc.o OBJ.x86_64
 -apple-darwin17.7.0/same.o OBJ.x86_64-apple-darwin17.7.0/scan.o OBJ.x86_64
 -apple-darwin17.7.0/sign.o OBJ.x86_64-apple-darwin17.7.0/type.o OBJ.x86_64
 -apple-darwin17.7.0/tz1.o OBJ.x86_64-apple-darwin17.7.0/tz2.o OBJ.x86_64
 -apple-darwin17.7.0/values.o
 }}}

 Note the use of `cc` instead of the correct compiler.

-- 
Ticket URL: <https://trac.macports.org/ticket/57734#comment:2>
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