[MacPorts] #67174: R-systemfonts fails on 10.8 and earlier with Clang

[MacPorts]

#67174: R-systemfonts fails on 10.8 and earlier with Clang
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 Reporter:  barracuda156  |      Owner:  barracuda156
     Type:  defect        |     Status:  assigned
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.8.1
 Keywords:                |       Port:  R-systemfonts
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 https://ports.macports.org/port/R-systemfonts/details (logs are gone)

 Just noticed that, making a ticket in order to investigate the issue and
 fix.

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Ticket URL: <https://trac.macports.org/ticket/67174>
MacPorts <https://www.macports.org/>
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