[MacPorts] #62843: py-cryptography @3.4.7: ports failing to build for MacOS 10.12 and earlier

[MacPorts]

#62843: py-cryptography @3.4.7: ports failing to build for MacOS 10.12 and earlier
------------------------------+----------------------
  Reporter:  mascguy          |      Owner:  stromnov
      Type:  defect           |     Status:  assigned
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:
      Port:  py-cryptography  |
------------------------------+----------------------

Comment (by kencu):

 if you are passing it to clang (or gcc) to send to the linker, as you
 usually (99.99999% of the time) are meant to:
 {{{
 clang
 -Wl,-exported_symbols_list,/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_net_ffsend/ffsend/work/.tmp/rustcDGQ1So/list
 BLAHBLAHBLAH
 }}}

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Ticket URL: <https://trac.macports.org/ticket/62843#comment:8>
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