[MacPorts] #70834: Error installing UPX on Mac OS X Sequoia (15.0) on MacBook 15

[MacPorts]

#70834: Error installing UPX on Mac OS X Sequoia (15.0) on MacBook 15
---------------------+--------------------
 Reporter:  punkish  |      Owner:  (none)
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:
---------------------+--------------------
 {{{
 :info:configure ---------------------------------------------
 :info:configure CMake 3.9.6, Copyright 2000-2017 Kitware, Inc. and
 Contributors
 :info:configure C compiler on this system is: /usr/bin/clang -pipe -Os
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk -arch arm64
 -std=gnu11
 :info:configure ---------------------------------------------
 :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.
 }}}

 This is the third program today that has errored out while installing, so
 I am wondering if I am actually missing something. MacPorts installation
 page says that I need xcode command line tools

 > Apple's Command Line Developer Tools, in case a port you're installing
 or one of its dependencies are not available as binaries.

 I do have those as is evident below

 {{{
 $ xcode-select --install
 xcode-select: note: Command line tools are already installed. Use
 "Software Update" in System Settings or the softwareupdate command line
 interface to install updates
 }}}

 Further on, the installation page says

 > (Optional) Apple's Xcode Developer Tools, when building some ports from
 source. MacPorts will let you know if this is the case.

 So, my question is, is the above error MacPorts way of letting me know
 that I need the full Xcode Developer Tools? I had not until today and
 everything I threw at MacPorts worked just fine. But starting today, I am
 facing these messages. The only difference -- now I have upgraded to Mac
 OS X Sequoia

-- 
Ticket URL: <https://trac.macports.org/ticket/70834>
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