[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:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.6.4
Resolution:               |   Keywords:  bigsur arm64
      Port:  rb-nokogiri  |
--------------------------+--------------------------

Comment (by kimuraw):

 from nortcele's mkmf.log, SDK paths looks to conflict between macports'
 ruby and your Mac.

 as a workaround, recompile ruby with `sudo port -ns upgrade --force
 ruby27` solves this problem.

 {{{
 % ruby2.7 -rpp -e 'pp RbConfig::CONFIG["CFLAGS"]' | grep sysroot
 "-pipe -Os
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk -fno-
 common"
 % ls /Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk
 ls: /Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk: No such file
 or directory
 % xcrun --sdk macosx --show-sdk-path
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk

 % sudo port -ns upgrade --force ruby27
 % ruby2.7 -rpp -e 'pp RbConfig::CONFIG["CFLAGS"]' | grep sysroot
 "-pipe -Os
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.1.sdk -fno-
 common" # 11.0 -> 11.1
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/61827#comment:7>
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