im a noob help pls bro (explained in comments)

[maniqwertyuiop]

so like idk where to get this baserom.us.z64 file, i did some searchign and downloaded a file literally called baserom.us.z64, i did the stuff on msys and got stuck at the "cp /c/temp/baserom.us.z64 ./ && echo "OK!" " part, and it said that no such file or directory exists, i tried pasting the file into my temp files, and reloaded msys and did the entire compiling thing again, but still got the error that it didnt exist, can anyone help me, im a noob sooooo

[lividhen]

It can be legally obtained by dumping a US cartridge of super Mario 64. It can by illegally obtained by downloading a US super Mario 64 rom and renaming it baserom.us.z64.
That file is copied to the root of your build directory (aka not inside any folders), you don't strictly have to use that command. I have never tried building it with msys32. I have always used wsl which is very close to a native Linux environment. It can also open file explorer (explorer.exe .) if you don't want to use the command line to move files around.