[MacPorts] #52468: gtk3 3.22.0_0 build fails on 10.5 ppc

[MacPorts]

#52468: gtk3 3.22.0_0 build fails on 10.5 ppc
-------------------------+----------------------
  Reporter:  dgonyier@…  |      Owner:  devans@…
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.4
Resolution:              |   Keywords:  leopard
      Port:  gtk3        |
-------------------------+----------------------

Comment (by ken.cunningham.webuse@…):

 As so often happens, it doesn't take me too long to reach the edges of my
 knowledge in these areas. I notice the system-installed
 /usr/lib/libstdc++.6.dylib is versioned like this:
 {{{
 $ otool -L /usr/lib/libstdc++.6.dylib
 /usr/lib/libstdc++.6.dylib:
         /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current
 version 7.4.0)
         /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
 version 88.1.5)
         /usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current
 version 1.0.0)
 }}}

 and the macports-installed /opt/local/lib/gcc6/libstdc++.dylib is
 versioned like this:
 {{{
 $ otool -L /opt/local/lib/libgcc/libstdc++.6.dylib
 /opt/local/lib/libgcc/libstdc++.6.dylib:
         /opt/local/lib/libgcc/libstdc++.6.dylib (compatibility version
 7.0.0, current version 7.22.0)
         /usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current
 version 1.0.0)
         /opt/local/lib/libgcc/libgcc_s.1.dylib (compatibility version
 1.0.0, current version 1.0.0)
         /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
 version 88.1.12)
 }}}

 I'm looking specifically at the fact that the system version and macports
 version of libstdc++.6.dylib both have a compatibility version of 7.0.0.
 That would make someone like me think these two c++ libraries would be
 compatible -- and one would expect the minor version changes (4 vs 22) to
 represent certain enhancements or fixes that would not be expected to
 affect compatibility.

 Which - if reasonably accurate - would make the whole 'move forward'
 process considerably easier...

-- 
Ticket URL: <https://trac.macports.org/ticket/52468#comment:27>
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