[MacPorts] #60719: mesa Portfile looks for Xplugin in /usr/{include, lib}

[MacPorts]

#60719: mesa Portfile looks for Xplugin in /usr/{include,lib}
--------------------+----------------------
 Reporter:  jmroot  |      Owner:  jeremyhu
     Type:  defect  |     Status:  assigned
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  mesa
--------------------+----------------------
 These of course may not exist on disk at those locations even though they
 are available to the compiler. I would fix this but I'm not quite sure
 what the correct check would be.

-- 
Ticket URL: <https://trac.macports.org/ticket/60719>
MacPorts <https://www.macports.org/>
Ports system for macOS