[MacPorts] #57166: poppler 0.69.0 build failure on Mojave

[MacPorts]

#57166: poppler 0.69.0 build failure on Mojave
--------------------------+----------------------
  Reporter:  Schamschula  |      Owner:  dbevans
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.5.3
Resolution:               |   Keywords:  Mojave
      Port:  poppler      |
--------------------------+----------------------

Comment (by kencu):

 I think your error is really this?
 {{{
 clang: warning: no such sysroot directory: '/Applications/Xcode-
 beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk'
 [-Wmissing-sysroot]
 }}}

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Ticket URL: <https://trac.macports.org/ticket/57166#comment:1>
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