[MacPorts] #65679: giflib5 @5.2.1_2 dylib has incorrect install_name

[MacPorts]

#65679: giflib5 @5.2.1_2 dylib has incorrect install_name
----------------------+-------------------------
  Reporter:  jmroot   |      Owner:  Schamschula
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  giflib5  |
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Comment (by jmroot):

 Replying to [comment:5 Schamschula]:
 > I'm assuming you mean {{{install_name_tool}}}.

 No, I mean add a flag to the link command in the Makefile. Instead of
 {{{
 $(CC) $(CFLAGS) -dynamiclib -current_version $(LIBVER) $(OBJECTS) -o
 $(LIBGIFSO)
 }}}
 use
 {{{
 $(CC) $(CFLAGS) -dynamiclib -current_version $(LIBVER) -install_name
 $(LIBDIR)/$(LIBGIFSOMAJOR) $(OBJECTS) -o $(LIBGIFSO)
 }}}
 (and do the equivalent for all other link commands.)

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Ticket URL: <https://trac.macports.org/ticket/65679#comment:6>
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