[MacPorts] #65908: lzma @22.01_0 - Unable to upgrade lzma - cxx_stdlib mismatch

[MacPorts]

#65908: lzma @22.01_0 - Unable to upgrade lzma - cxx_stdlib mismatch
---------------------+-------------------------------
  Reporter:  RobK88  |      Owner:  ryandesign
      Type:  defect  |     Status:  accepted
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.7.2
Resolution:          |   Keywords:  lion mountainlion
      Port:  lzma    |
---------------------+-------------------------------

Comment (by judaew):

 > ... Now in version 22.01, the project is built from the LzmaCon
 directory and the makefile.gcc file doesn't have such options. The file is
 only a list of object files.

 It looks like the developer have moved all of these options into a
 separate files outside of the LzmaCon directory. These are cmpl_clang.mak
 which included var_clang.mak, warn_clang_mac.mak and Build.mak and so on.
 I don't know how to force the required flags to be used here.

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Ticket URL: <https://trac.macports.org/ticket/65908#comment:15>
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