[MacPorts] #60520: py36-scipy @1.4.1 build fails on Mac OS Catalina 10.15.4

[MacPorts]

#60520: py36-scipy @1.4.1 build fails on Mac OS Catalina 10.15.4
---------------------------+--------------------
  Reporter:  odysseus9672  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.6.2
Resolution:                |   Keywords:
      Port:  py36-scipy    |
---------------------------+--------------------
Description changed by odysseus9672:

Old description:

> I recently upgraded a laptop to Mac OS 10.15.4, and decided to do a clean
> install of MacPorts. Attempting to run `sudo port -s install py36-scipy`
> gives me an error message. Log attached. It looks like it's running into
> a bunch of errors compiling arpack files, with a bunch of lines like:
> {{{
> :info:build scipy/sparse/linalg/eigen/arpack/ARPACK/SRC/znaitr.f:666:35:
> :info:build   383 |             call dvout (logfil, 1, rnorm, ndigit,
> :info:build       |                                   2
> :info:build ......
> :info:build   666 |             call dvout (logfil, 2, rtemp, ndigit,
> :info:build       |                                   1
> :info:build Error: Rank mismatch between actual argument at (1) and
> actual argument at (2) (scalar and rank-1))
> }}}
>
> Similar errors happened when I tried to build arpack @3.7.0 (I thought it
> was a possible missing dependency).

New description:

 I recently upgraded a laptop to Mac OS 10.15.4, and decided to do a clean
 install of MacPorts. Attempting to run `sudo port -s install py36-scipy`
 gives me an error message. Log attached. It looks like it's running into a
 bunch of errors compiling arpack files, with a bunch of lines like:
 {{{
 :info:build scipy/sparse/linalg/eigen/arpack/ARPACK/SRC/znaitr.f:666:35:
 :info:build   383 |             call dvout (logfil, 1, rnorm, ndigit,
 :info:build       |                                   2
 :info:build ......
 :info:build   666 |             call dvout (logfil, 2, rtemp, ndigit,
 :info:build       |                                   1
 :info:build Error: Rank mismatch between actual argument at (1) and actual
 argument at (2) (scalar and rank-1))
 }}}

 Similar errors happened when I tried to build arpack @3.7.0 (I thought it
 was a possible missing dependency).

 The XCode version installed is: 11.4.1.

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Ticket URL: <https://trac.macports.org/ticket/60520#comment:1>
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