[MacPorts] #60976: R @4.0.2 fails to configure with Xcode 12, missing includes in bzip2 test program

[MacPorts]

#60976: R @4.0.2 fails to configure with Xcode 12, missing includes in bzip2 test
program
-----------------------+------------------------
  Reporter:  raramayo  |      Owner:  i0ntempest
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  R         |
-----------------------+------------------------

Comment (by i0ntempest):

 A few weeks ago apple erroneously pushed a beta CLT update to all users,
 so if you are on 10.15.6 and Xcode 11, maybe your OS automatically updated
 CLT for you. Try deleting /Library/Developer/CommandLineTools/ and
 reinstalling the release version of CLT using {{{xcode-select}}}, then try
 if the problem goes away.

-- 
Ticket URL: <https://trac.macports.org/ticket/60976#comment:7>
MacPorts <https://www.macports.org/>
Ports system for macOS