@a1ba @ThatOneSeong Well if it's blobs then it's like x86_64-*-linux-gnu when dynamic, but still x86_64-*-linux-* when static.
Like how you can still run static binaries from libc5 era, and for dynamic binaries from libc5 era you effectively need compatibility libraries like how there's gcompat for musl→glibc.

And realistically for old software, you'll need to use a container or even a VM regardless of your system because GNU is far from being the only relevant thing in Linux.