[MacPorts] #74194: glib2 fails to upgrade on Mac OS10.15

[MacPorts]

#74194: glib2 fails to upgrade on Mac OS10.15
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  Reporter:  lpagani91  |      Owner:  mascguy
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.12.5
Resolution:             |   Keywords:
      Port:  glib2      |
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Comment (by isolated-matrix):

 Replying to [comment:8 reneeotten]:
 > okay, so you have stuff installed outside of MacPorts (and Homebrew) as
 none of these install stuff in `/usr/local/*` - that is something you will
 have to resolve before anyone (or at least me) will do anything about this
 ticket. You will need to show that this is an issue on a clean system.

 It looks like the stuff I have in those directories are libraries from
 other programs. I have installed gfortran from the HPC MacOS website
 (because I couldn't figure out how to get gfortran from macports), but
 everything else looks quite harmless. Do you know which file is confusing
 macports?

 > I guess it's possible that if the {{{.so}}} files from {{{glib-
 networking}}} were compiled against a different, already-installed
 GLib/GIO ABI it could cause such a build failure. Can you try do
 (temporarily) deactivate the {{{glib-networking}}} port and see if that
 fixes the failure. That at least would give possibly an actionable thing
 to try and fix in the sense that it is a MacPorts issue then and not
 related to stuff you have installed outside of the package manager.
 Unfortunately, that didn't help.

 This is definitely a MacPorts issue, and not related to my system. All
 these issues only popped up after the MacPorts update earlier this year. I
 installed gfortran well over a year ago, but the first time I have ever
 had to deal with broken ports like this was following that update. It
 could be the case that I need to do a fresh installation of MacPorts, but
 I'd rather avoid that if possible... My copy of gfortran also happens to
 be outdated, so if you think that's really the root of the problem I could
 try updating that, too.

-- 
Ticket URL: <https://trac.macports.org/ticket/74194#comment:9>
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