[MacPorts] #70716: cmake-bootstrap @3.9.6_0: Unable to install on MacOSx 10.15 (Sequoia)

[MacPorts]

#70716: cmake-bootstrap @3.9.6_0: Unable to install on MacOSx 10.15 (Sequoia)
------------------------------+---------------------
  Reporter:  cemb007          |      Owner:  (none)
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:  sequoia
      Port:  cmake-bootstrap  |
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Comment (by mbaehr):

 This appears to be a general issue with being able to access C++ headers
 from the stdlib. See also #70716. I am experiencing this after a fresh
 install on Sequoia with any port that builds C++ - have so far reproduced
 with this one (cmake-bootstrap), as well as gmp, and a few others. My
 assumption is that this error was introduced with the macOS 15/Xcode 16
 combination.

 The issue seems to be specific to commands executed by macports during the
 build process. If I run configure by hand, using the same arguments that
 macports uses, and as the macports user, it succeeds. I can then advance
 the statefile and execute the build step via the port command and it will
 succeed. However, on other ports, this strategy does not always bring
 success.

-- 
Ticket URL: <https://trac.macports.org/ticket/70716#comment:8>
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