[MacPorts] #61827: rb27-nokogiri @1.10.4 : Failed to compile on Big Sur (Apple Silicon)

[MacPorts]

#61827: rb27-nokogiri @1.10.4 : Failed to compile on Big Sur (Apple Silicon)
--------------------------+--------------------------
  Reporter:  milkcocoa    |      Owner:  kimuraw
      Type:  defect       |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.6.4
Resolution:  fixed        |   Keywords:  bigsur arm64
      Port:  rb-nokogiri  |
--------------------------+--------------------------

Comment (by kimuraw):

 mkmf.log says "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk" not
 found.

 re-install "Command line Tools" with dmg from
 https://developer.apple.com/download/ (developer ID required)
 might solve this problem.

 similar problem:
 https://trac.macports.org/wiki/BigSurProblems#InstallmacOSSDK11manuallyincaseofproblems

 {{{
 % ls -l /Library/Developer/CommandLineTools/SDKs
 total 0
 lrwxr-xr-x  1 root  wheel   14 Dec 20 23:53 MacOSX.sdk@ -> MacOSX11.1.sdk
 drwxr-xr-x  7 root  wheel  224 Mar 27  2020 MacOSX10.14.sdk/
 drwxr-xr-x  8 root  wheel  256 Dec 20 23:54 MacOSX10.15.sdk/
 drwxr-xr-x  7 root  wheel  224 Dec 20 23:53 MacOSX11.1.sdk/
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/61827#comment:14>
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