[MacPorts] #61082: rust @ 1.45.2 -x11 +no_x11 +quartz - build failure with macosx_deployment_target 10.11

[MacPorts]

#61082: rust @ 1.45.2 -x11 +no_x11 +quartz - build failure with
macosx_deployment_target 10.11
------------------------+----------------------
  Reporter:  fredowski  |      Owner:  g5pw
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.3
Resolution:             |   Keywords:
      Port:  rust       |
------------------------+----------------------

Comment (by kencu):

 Replying to [comment:2 fredowski]:
 > I looked into the code at "path.inc" after the build stopped and I think
 I found the patched version. Now I do a test build with the line "--llvm-
 root" in the Portfile removed. I suspect the code is there but we are not
 using it.
 >
 > https://github.com/macports/macports-
 ports/blob/master/lang/rust/Portfile#L95

 Looks like rust uses our installed version of llvm-9.0, and we certainly
 do not patch our llvm to disable this call.

 That patch is a hack, TBH -- we won't be doing that in our installed llvm
 version.

 So, not sure what to say here. Either you patch your own installed
 llvm-9.0 with that patch to disable that symbol, or we install a custom
 llvm-9.0 with that patch for rust to use (yuk), or you build in a 10.11
 VM, or ... you don't set a lower depolyment target.

 Am I missing any other options?

-- 
Ticket URL: <https://trac.macports.org/ticket/61082#comment:5>
MacPorts <https://www.macports.org/>
Ports system for macOS