Hey, thank you! Yes, Linux and macOS are intended to be supported at release.
The .exe name is a little misleading here: ORBIS BASIC 32X is built as a Cosmopolitan / actually portable executable, so it should run directly on Linux without Wine. Wine is not needed and may actually cause problems.
I am developing and testing the executable on Linux Mint myself.
On Linux, please try:
chmod +x ob32x_free.exe ./ob32x_free.exe examples/hello.bas
The .exe extension is kept so the same file can also be used on Windows.
If it still gives you trouble when run directly, please let me know your distro and system details. I definitely want the tool to work well for *nix users too.