hostmot2 firmware on Archlinux

As on 24th july 2020, the updated AUR PKGBUILD builds and I am able to run linuxcnc on Arch but I am unable to build hostmot2 firmware. Has anyone built it on non-debian linux box?

I had downloaded support softwares from mesanet.com for my card. It contained the .bit files and .pin files for different combination of anything IO and daughter cards. I didn't understand what locations they need to be installed at nor was I able to get the locations from makefile in Linuxcnc repository: github.com/LinuxCNC/hostmot2-firmware
So I was hoping to find if someone knows if they built it and if so what location to copy the files to. Also I assumed precompiled firmwares will have .bin or executables rather than .bit files.

6i25-7i76. I have a working linuxcnc installation. There I flashed to card with proper firmwares. The controller works well on wheezy-linuxcnc build. But on Arch-linux, it said firmware missing during pcnconf. So I thought I it needs some binaries on the OS side also. I am starting to think I was wrong and if the cards have the firmware and fallback firmware properly installed, it needs nothing specific to mesa cards on the OS side.