[MacPorts] #51433: graphite2: fatal error: 'unistd.h' file not found (was: Processing of port wine failed)

[MacPorts]

#51433: graphite2: fatal error: 'unistd.h' file not found
----------------------------+--------------------------
  Reporter:  joyeeabroad@…  |      Owner:  ryandesign@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.4
Resolution:                 |   Keywords:
      Port:  graphite2      |
----------------------------+--------------------------
Changes (by ryandesign@…):

 * owner:  macports-tickets@… => ryandesign@…
 * port:   => graphite2


Comment:

 The error shown in the log is:

 {{{
 :info:build
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:23:10:
 fatal error: 'unistd.h' file not found
 :info:build #include <unistd.h>
 :info:build          ^
 }}}

 Have you installed the Xcode commandline tools? If not, please do.

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Ticket URL: <https://trac.macports.org/ticket/51433#comment:1>
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