[MacPorts] #67320: clang-11 @11.1.0_7 +universal fails to build when libxslt -universal is active

[MacPorts]

#67320: clang-11 @11.1.0_7 +universal fails to build when libxslt -universal is
active
------------------------+--------------------
  Reporter:  fhgwright  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.8.1
Resolution:             |   Keywords:
      Port:  clang-11   |
------------------------+--------------------

Comment (by fhgwright):

 Replying to [comment:5 ryandesign]:
 > This sounds like a linker bug we encountered many years ago already. I
 know of no solution other than installing the offending libraries
 universal.

 I don't see how a linker bug would cause it to optionally link against
 `libxslt`.  Once it does that, it's of course not a bug that it can't link
 against a library with a missing architecture.

 Replying to [comment:6 kencu]:
 > all the years I’ve been building clang, I’ve never seen this…
 >
 > I can’t as yet find anywhere that the llvm tree tries to link in libxslt

 The log shows the command that's doing it, but not ''why'' it's doing it.

 > probably have to run the failing link manually with -Wl,-v to get some
 idea what is going on here

 I neglected to capture `.CC_PRINT_OPTIONS`, which might be helpful.

-- 
Ticket URL: <https://trac.macports.org/ticket/67320#comment:7>
MacPorts <https://www.macports.org/>
Ports system for macOS