Looks like you are trying to build uuu from source. I don’t use openSUSE but it looks like a package is availabe: https://software.opensuse.org/package/mfgtools so I assume rather then build it from source you can just install mfgtools. You can also keep trying to build from source. That error message is saying that you need to install libusb-1.0.
edit - I actually think it would be great idea to mention in the docs that uuu in other distros is commonly mfgtools
You will also struggle when you attempt to run the actual flashing script since you cannot run sudo apt build-dep . before hand. You’ll want to install these packages before you run the script. https://source.puri.sm/Librem5/librem5-flash-image/-/blob/main/requirements.txt