[MacPorts] #61700: OpenBlas fails to build on macOS BigSur (Apple Silicon)

[MacPorts]

#61700: OpenBlas fails to build on macOS BigSur (Apple Silicon)
-----------------------------+----------------------
 Reporter:  Gregory-Gelfond  |      Owner:  (none)
     Type:  defect           |     Status:  new
 Priority:  Normal           |  Milestone:
Component:  ports            |    Version:  2.6.4
 Keywords:  bigsur arm664    |       Port:  openblas
-----------------------------+----------------------
 `sudo port install py38-matplotlib +cairo +ghostscript +latex +tkinter
 +webagg` fails when attempting to build openblas:

 {{{
 --->  Fetching archive for OpenBLAS
 --->  Attempting to fetch
 OpenBLAS-0.3.12_0+gccdevel+lapack.darwin_20.arm64.tbz2 from
 https://packages.macports.org/OpenBLAS
 --->  Attempting to fetch
 OpenBLAS-0.3.12_0+gccdevel+lapack.darwin_20.arm64.tbz2 from
 https://ywg.ca.packages.macports.org/mirror/macports/packages/OpenBLAS/OpenBLAS
 --->  Attempting to fetch
 OpenBLAS-0.3.12_0+gccdevel+lapack.darwin_20.arm64.tbz2 from
 https://mse.uk.packages.macports.org/OpenBLAS
 --->  Building OpenBLAS
 Error: Failed to build OpenBLAS: command execution failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_math_OpenBLAS/OpenBLAS/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 Error: Processing of port py38-matplotlib failed
 }}}

 I've attached the main.log for reference.

-- 
Ticket URL: <https://trac.macports.org/ticket/61700>
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