[MacPorts] #59927: bison @3.5 does not build with older gcc versions (gcc-4.2 and similar) because "#pragma GCC diagnostic not allowed inside functions"

[MacPorts]

#59927: bison @3.5 does not build with older gcc versions (gcc-4.2 and similar)
because "#pragma GCC diagnostic not allowed inside functions"
------------------------+--------------------
  Reporter:  ballapete  |      Owner:  kencu
      Type:  defect     |     Status:  closed
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.2
Resolution:  fixed      |   Keywords:
      Port:  bison      |
------------------------+--------------------

Comment (by mascguy):

 This ticket piqued my interest, as I was updating one of my old Macs
 running 10.4 this weekend.

 The problem is, while port `apple-gcc42` is installed (and up-to-date),
 `gcc7` is not. So it's frustrating to have a foundational port like
 `bison` dependent on a newer GCC, when it sounds (?) like it should be
 buildable on gcc 4.2...?

 From the various discussion, it sounds like most of the issues were fixed.
 How much work would be required to tackle the remaining items?

-- 
Ticket URL: <https://trac.macports.org/ticket/59927#comment:36>
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