The SD card build flow fails for the e200 board due to incorrect handling of prebuilt artifacts

[govindsi]

Hi, I am trying to build the sources for e200 and am running into the following issues.

First, make BOARDS=e200 failed because pynq_sdist.tar.gz was missing:

make BOARDS=e200
Makefile:395: *** REBUILD_PYNQ_SDIST not set and PYNQ_SDIST file /home/govindsingh/WORK/antsdr-pynq/PYNQ/sdbuild/prebuilt/pynq_sdist.tar.gz does not exist. Stop.

I generated the sdist with:

cd ~/WORK/antsdr-pynq/PYNQ
python3 setup.py sdist
cp dist/pynq-*.tar.gz sdbuild/prebuilt/pynq_sdist.tar.gz

Then I ran make BOARDS=e200 again, but it failed with:

Makefile:401: *** REBUILD_PYNQ_ROOTFS not set and PYNQ_ROOTFS file /home/govindsingh/WORK/antsdr-pynq/PYNQ/sdbuild/prebuilt/pynq_rootfs..tar.gz does not exist. Stop.

It looks like the rootfs architecture suffix is not being set correctly, since the expected filename becomes pynq_rootfs..tar.gz.

Could you please share the correct build steps for e200 and update the README accordingly?