[MacPorts] #69812: cmake-bootstrap @3.9.6 does not compile under rosetta2

[MacPorts]

#69812: cmake-bootstrap @3.9.6 does not compile under rosetta2
------------------------------+--------------------
  Reporter:  lukaso           |      Owner:  (none)
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:
      Port:  cmake-bootstrap  |
------------------------------+--------------------

Comment (by ryandesign):

 Replying to [comment:8 lukaso]:
 > > If you mean comping for one macOS version on another macOS version, or
 for one macOS architecture from another macOS architecture, then yes, with
 the caveat that it is not well tested and there are therefore frequent
 problems.
 >
 > How is this done? I might as well try it.

 Building for a different OS version, you're already doing by setting
 `macosx_deployment_target` in macports.conf I presume. While Apple would
 like us to believe that we can build for older OS versions using the
 latest SDK, it looks like you're also specifying the older 10.13 SDK by
 setting `macosx_sdk_version` in macports.conf.

 Building for another arch is done by changing `build_arch` (for non-
 universal builds) and `universal_archs` (for universal builds) in
 macports.conf.

 And I agree with Ken that what you're doing using Rosetta 2 ''should''
 work but I don't think anybody has tested it before.

 > > The simplest way to do so would be to perform the builds on a machine
 that runs macOS 10.13.
 >
 > I've tried to find ways of doing this. But it's not OK for our builds to
 be on a machine under my desk. How does Macports do this? I suppose, if I
 had a VM that was properly hosted, I could support even older MacOS
 versions.

 I run https://build.macports.org from three Xserves running VMware ESXi
 with VMs for each OS version.

-- 
Ticket URL: <https://trac.macports.org/ticket/69812#comment:10>
MacPorts <https://www.macports.org/>
Ports system for macOS