[MacPorts] #62763: sudo port install py39-numpy on MacOs BigSur gives error - Failed to build OpenBLAS

[MacPorts]

#62763: sudo port install py39-numpy on MacOs BigSur gives error - Failed to build
OpenBLAS
------------------------+--------------------
 Reporter:  ankitadhar  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  High        |  Milestone:
Component:  ports       |    Version:  2.6.4
 Keywords:  OpenBLAS    |       Port:  gcc
------------------------+--------------------
 Using MacBookAir BigSur with M1 chip.

 {{
 Warning: The macOS 11.2 SDK does not appear to be installed. Ports may not
 build correctly.
 Warning: You can install it as part of the Xcode Command Line Tools
 package by running `xcode-select --install'.
 --->  Computing dependencies for py39-numpy
 The following dependencies will be installed:
  OpenBLAS
  fftw-3
  nosetests_select
  py39-nose
 Continue? [Y/n]: y
 Warning: The macOS 11.2 SDK does not appear to be installed. Ports may not
 build correctly.
 Warning: You can install it as part of the Xcode Command Line Tools
 package by running `xcode-select --install'.
 --->  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 py39-numpy failed
 }}

 What should be done to fix it? Without it I am not able to install scikit-
 learn. I was following -> http://dioskurn.com:8000/installing-scikit-
 learn-in-macos/

 I have followed this link -> https://trac.macports.org/ticket/57994, and
 have tried everything mentioned there. Nothing seems to work.

-- 
Ticket URL: <https://trac.macports.org/ticket/62763>
MacPorts <https://www.macports.org/>
Ports system for macOS