[MacPorts] #68507: OpenBLAS: some recent change in Macports broken finding OpenBLAS with Clang builds for some ports

[MacPorts]

#68507: OpenBLAS: some recent change in Macports broken finding OpenBLAS with Clang
builds for some ports
--------------------------------+--------------------
  Reporter:  barracuda156       |      Owner:  (none)
      Type:  defect             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:  2.8.1
Resolution:                     |   Keywords:
      Port:  OpenBLAS, madness  |
--------------------------------+--------------------

Comment (by DanielO):

 I think this is due to libopenblas having /opt/local/lib/libgcc listed
 twice as an RPATH.

 I guess this would have to be fixed in the openblas build but I have no
 idea how hard that would be, or you can pass -Wl,-ld_classic to the link.

 (Or you can hand edit the library and change one of the references but I
 was in a hurry..)

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Ticket URL: <https://trac.macports.org/ticket/68507#comment:4>
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