[MacPorts] #59832: cmake 3.16.0: does not build on PPC Mac OS X 10.5.8, "Bus Error"

[MacPorts]

#59832: cmake 3.16.0: does not build on PPC Mac OS X 10.5.8, "Bus Error"
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  Reporter:  timishimuni  |      Owner:  michaelld
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.6.2
Resolution:               |   Keywords:  leopard
      Port:  cmake        |
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Comment (by noloader):

 Replying to [comment:15 kencu]:
 > ...
 >
 > I believe the underlying issue relates to the different ABIs used by
 libstdc++ from our libgcc7 port, and the libstdc++ used by the system.
 >
 > Presently we build libgcc7 using the default (new) ABI, but force all
 the builds to the old abi by building with an enabled macro
 {{{_GLIBCXX_USE_CXX11_ABI=0}}}. That is most likely the issue here. See
 <https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html>.

 Forgive me for the noise... If needed, here is the blog post covering
 `_GLIBCXX_USE_CXX11_ABI` from Red Hat: [GCC 5 in
 Fedora](https://developers.redhat.com/blog/2015/02/10/gcc-5-in-fedora-2/).
 Also see [Dual
 ABI](https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html)
 in the GCC docs.

 `-Wabi-tags` may be useful while experimenting with
 `_GLIBCXX_USE_CXX11_ABI`.

-- 
Ticket URL: <https://trac.macports.org/ticket/59832#comment:23>
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