[MacPorts] #69279: gpgme @1.23.2 does not build on PPC Tiger, Mac OS X 10.4.11, because of "Undefined symbols"

[MacPorts]

#69279: gpgme @1.23.2 does  not build on PPC Tiger, Mac OS X 10.4.11, because of
"Undefined symbols"
------------------------+-----------------------
  Reporter:  ballapete  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.9.1
Resolution:             |   Keywords:  ppc tiger
      Port:  gpgme      |
------------------------+-----------------------

Comment (by ballapete):

 According to
 https://developer.apple.com/documentation/kernel/1579333-strcasecmp`
 strcasecmp()` **is** in `Tiger`… And I also see it declared in `string.h`
 and `strings.h` – although put between include guards as neither for
 `_ANSI_SOURCE` nor `_POSIX_C_SOURCE`. A manual entry exists as well – but
 it seems missing from `libc`…

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Ticket URL: <https://trac.macports.org/ticket/69279#comment:4>
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