Installing bladerf failed on M1

[n2iw (Ming Ying)]

I was trying to install bladerf on M1 Mac mini running macOS 11.5.2, I got following error when running "sudo port install bladerf":

Error: Cannot install bladeRF for the arch 'arm64' because
Error: its dependency pandoc only supports the arch 'x86_64'.
Error: Follow https://guide.macports.org/#project.tickets if you believe there is a bug.
Error: Processing of port bladerf failed

Then I ran "sudo port install pandoc" it seemed to be successful:

--->  Fetching archive for pandoc
--->  Attempting to fetch pandoc-2.14.2_0.darwin_20.x86_64.tbz2 from https://packages.macports.org/pandoc
--->  Attempting to fetch pandoc-2.14.2_0.darwin_20.x86_64.tbz2.rmd160 from https://packages.macports.org/pandoc
--->  Installing pandoc @2.14.2_0
--->  Activating pandoc @2.14.2_0
--->  Cleaning pandoc
--->  Scanning binaries for linking errors
--->  No broken files found.
--->  No broken ports found.

Then, I ran "sudo port install bladerf" again, and got the same error above.