pkgsrc on slightly older Mac OS

[John Klos <john%ziaspace.com@localhost>]

Hi,

What's recommended to deal with stuff like this, which seems to come up 
often when running pkgsrc on Mac OS which is two or three versions older 
than what's current?

This is High Sierra:

FAILED: gio/tests/plugin-resources.c
/Users/john/pkgsrc/devel/glib2/work/.tools/bin/env 
LD_LIBRARY_PATH=gio:glib:gmodule:gobject 
/Users/john/pkgsrc/devel/glib2/work/glib-2.66.7/output/gio/glib-compile-resources 
--target=gio/tests/plugin-resources.c 
--sourcedir=/Users/john/pkgsrc/devel/glib2/work/glib-2.66.7/gio/tests 
--generate-source --c-name _g_plugin ../gio/tests/test4.gresource.xml
dyld: Library not loaded: @rpath/libgio-2.0.0.dylib
  Referenced from: 
/Users/john/pkgsrc/devel/glib2/work/glib-2.66.7/output/gio/glib-compile-resources
  Reason: Incompatible library version: glib-compile-resources requires 
version 6601.0.0 or later, but libgio-2.0.0.dylib provides version 
6201.0.0
Abort
ninja: build stopped: subcommand failed.
*** Error code 1

Thanks,
John Klos