[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
 Keywords:  PPC libcaca cppunit OSX 10.5.8  |       Port:  libcaca
--------------------------------------------+---------------------
 If cppunit is installed and was compiled with GCC4.2, building libcaca
 will fail in the test directory on a PPC, due to missing symbols for PPC
 in cppunit.

 The Portfile for libcaca contains the line

    PortGroup           cxx11 1.1

 which will force the libcaca build to use GCC6 on a PPC. If cppunit is
 installed and was compiled with GCC4.2, the libcaca build will fail in the
 test directory due to missing symbols for PPC.

 Recompiling cppunit with GCC6 fixes the problem. Someone who knows a lot
 more about Portfiles than I do could probably force the recompilation of
 cppunit from within the libcaca Portfile.

 -Joseph

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Ticket URL: <https://trac.macports.org/ticket/54435>
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