zinc k20 json (testing)

k20.json

{
    "arch": "arm",
    "cpu": "cortex-m4",
    "data-layout": "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:64-v128:64:128-a:0:32-n32-S64",
    "disable-redzone": true,
    "executables": true,
    "llvm-target": "thumbv7m-none-eabi",
    "morestack": false,
    "os": "none",
    "relocation-model": "static",
    "target-endian": "little",
    "target-pointer-width": "32",
    "no-compiler-rt": true,
    "linker": "arm-none-eabi-gcc",
    "pre-link-args": [
        "-lm", "-lgcc", "-mcpu=cortex-m4", "-mthumb",
        "-L/home/posborne/Projects/rust-playground/zinc/src/hal/k20",
        "-L/home/posborne/Projects/rust-playground/zinc/src/hal",
        "-T/home/posborne/Projects/rust-playground/zinc/src/hal/k20/layout.ld"
    ]
}