[MacPorts] #61453: bzip2: build fails due to 'stdio.h' file not found

[MacPorts]

#61453: bzip2: build fails due to 'stdio.h' file not found
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  Reporter:  rseichter  |      Owner:  ryandesign
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.4
Resolution:             |   Keywords:
      Port:  bzip2      |
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Comment (by kencu):

 does this SDK actually exist on your system?
 {{{
 SDKROOT='/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk
 }}}

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Ticket URL: <https://trac.macports.org/ticket/61453#comment:3>
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