[MacPorts] #55716: netpbm at 10.81.01+universal+x11 build fails on Snow Leopard

[MacPorts]

#55716: netpbm at 10.81.01+universal+x11 build fails on Snow Leopard
----------------------+-------------------------
  Reporter:  rlhamil  |      Owner:  ryandesign
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.4.2
Resolution:           |   Keywords:  snowleopard
      Port:  netpbm   |
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Comment (by Schamschula):

 Replying to [comment:3 josephsacco]:
 > strnlen is a GNU extension that was not available before OSX10.7.  Here
 is a workaround
 >
 >
 >    https://stackoverflow.com/questions/32468480/strnlen-does-not-exist-
 in-gcc-4-2-1-on-mac-os-x-10-6-8-how-to-define-it#32468556
 >
 >
 > -Joseph

 The {{{snowleopard_fixes-1.0}}} PortGroup provides this (and other
 similarly missing methods)

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Ticket URL: <https://trac.macports.org/ticket/55716#comment:4>
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