tests/run-make/target-specs/my-awesome-platform.json

{
    "data-layout": "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-i128:128-f64:32:64-f80:32-n8:16:32-S128",
    "linker-flavor": "gcc",
    "llvm-target": "i686-unknown-linux-gnu",
    "target-endian": "little",
    "target-pointer-width": 32,
    "arch": "x86",
    "os": "linux"
}