[MacPorts] #63585: py27-pygtk: error: implicit declaration of function 'pango_font_metrics_new' is invalid in C99

[MacPorts]

#63585: py27-pygtk: error: implicit declaration of function
'pango_font_metrics_new' is invalid in C99
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  Reporter:  rhstanton  |      Owner:  mascguy
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:  catalina bigsur
      Port:  py-pygtk   |
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Comment (by evanmiller):

 @jmroot> implicit declaration is unsafe on arm64 (different ABI depending
 on what type of arguments a function takes).

 The function in question takes no arguments and returns a pointer – are we
 safe on arm64 then?

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Ticket URL: <https://trac.macports.org/ticket/63585#comment:21>
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