Thank you for your reply!
My CPU is "AMD Ryzen 7 5700U with Radeon Graphics". (I checked "/proc/cpuinfo") So, Linux is x86_64.
Actually, my PC is small ASUS's NUC (PN51-S1-B-B7186MD). No additional GPU board.
I put this tool folder into "~/bin/MemaoSpriteCreator-Linux". And, I execute "~/bin/MemaoSpriteCreator-Linux/Memao Sprite Sheet Creator.x86_64".