[MacPorts] #57774: texlive-bin @2018.47642_8 : error: Undefined symbols for architecture x86_64

[MacPorts]

#57774: texlive-bin @2018.47642_8  : error: Undefined symbols for architecture
x86_64
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  Reporter:  kencu        |      Owner:  drkp
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  texlive-bin  |
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Comment (by kencu):

 Perhaps the cxx11 1.1 PG could append the `-D_GLIBCXX_USE_CXX11_ABI=0`
 flag onto the OBJCXXFLAGS env var during it's callback proc as well?

 Actually how do you append something to a current env variable without
 overwriting what is already set? I don't think I've done that yet...must
 be examples in the portfiles somewhere.

 (BTW, it was these sorts of hiccups that led me to wonder two years ago if
 we should just build libgcc to default to `GLIBCXX_USE_CXX11_ABI=0` on
 these systems, which is just a configure flag during the libgcc build.)

-- 
Ticket URL: <https://trac.macports.org/ticket/57774#comment:11>
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