[MacPorts] #59701: feh @3.2.1+universal: clang: error: cannot use 'dependencies' output with multiple -arch options

[MacPorts]

#59701: feh  @3.2.1+universal: clang: error: cannot use 'dependencies' output with
multiple -arch options
-------------------------+--------------------
  Reporter:  ryandesign  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.2
Resolution:              |   Keywords:
      Port:  feh         |
-------------------------+--------------------

Comment (by ryandesign):

 If I understand correctly, many projects use "dependency tracking" so that
 so that incremental builds during development are faster. If you need to
 recompile a file, you only want to recompile that file and any of its
 dependencies that have changed, and not those that haven't; that's
 dependency tracking. Dependency tracking doesn't work with multiple
 `-arch` flags, for whatever reason. MacPorts automatically adds the flag
 [https://www.gnu.org/software/automake/manual/html_node/Dependency-
 Tracking.html --disable-dependency-tracking] when building universal, but
 this flag is only known to autotools, and feh doesn't use autotools, so we
 need some other way of telling it not to use dependency tracking when
 building universal. In fact, it would be fine to disable dependency
 tracking for all builds, not just universal builds, since MacPorts is
 generally doing a full non-incremental build anyway.

-- 
Ticket URL: <https://trac.macports.org/ticket/59701#comment:2>
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