[MacPorts] #64655: libsdl2: find some version to use for Tiger and Leopard

[MacPorts]

#64655: libsdl2: find some version to use for Tiger and Leopard
---------------------------+------------------------------
  Reporter:  barracuda156  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.1
Resolution:                |   Keywords:  powerpc, leopard
      Port:  libsdl2       |
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Comment (by kencu):

 look here at this patch for an idea how I handled it in glib2:

 https://github.com/macports/macports-ports/blob/master/devel/glib2/files
 /patch-glib2-findfolders-before-SL.diff

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Ticket URL: <https://trac.macports.org/ticket/64655#comment:17>
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