[MacPorts] #70884: cmake-bootstrap 3.9.6_0: build fails on new install

[MacPorts]

#70884: cmake-bootstrap 3.9.6_0: build fails on new install
--------------------------+--------------------
 Reporter:  odysseus9672  |      Owner:  (none)
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:
 Keywords:                |       Port:
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 I just upgraded to Mac OSX 10.15 Sequoia with XCode 16. I have the command
 line tools installed. I deleted my old `/opt/local` and reinstalled
 MacPorts from scratch using the file `MacPorts-2.10.1-15-Sequoia.pkg`. The
 build fails when trying to install cmake-bootstrap. The build log for
 cmake-bootstrap is attached. I think the relevant lines are:
 ```
 :info:configure Error when bootstrapping CMake:
 :info:configure Cannot find appropriate C++ compiler on this system.
 :info:configure Please specify one using environment variable CXX.
 :info:configure See cmake_bootstrap.log for compilers attempted.
 ```

 The main.log file is attached.

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Ticket URL: <https://trac.macports.org/ticket/70884>
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