[MacPorts] #54435: Building libcaca at 0.99.beta19_6+x11 on a PPC fails unless cppunit compiled with GCC6

[MacPorts]

#54435: Building libcaca at 0.99.beta19_6+x11 on a PPC fails unless cppunit compiled
with GCC6
--------------------------+---------------------
  Reporter:  josephsacco  |      Owner:
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.4.1
Resolution:               |   Keywords:  powerpc
      Port:  libcaca      |
--------------------------+---------------------

Comment (by kencu):

 clang-4.0 does not work on PPC at present - the cxx11 portgroup was
 ignored on ppc until just very recently. So that would be it, I guess.
 Revbumping the whole group that uses cxx11 seems a bit aggressive.

 Perhaps this is a one-off rare event for this combination of ports (IIUC,
 cppunit could build with gcc42, but it needs to build with
 cxx11-compatible gcc6 now to work with libcaca -- a bit of a weird
 situation).

 Can we force a rebuild of the cppunit binary on the buildbot to make sure
 it's built with cxx11, and see if this comes up any further do you think,
 rather than revbumping 100+ ports for this?

--
Ticket URL: <https://trac.macports.org/ticket/54435#comment:4>
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