Dump the Built-In Rust Target: riscv64gc (64-bit RISC-V with Double-Float). See https://github.com/lupyuen/nuttx-rust-app

riscv64gc-unknown-none-elf.log

## Dump the Built-In Rust Target:
## riscv64gc (64-bit RISC-V with Double-Float)
$ rustc \
  +nightly \
  -Z unstable-options \
  --print target-spec-json \
  --target riscv64gc-unknown-none-elf  

{
  "arch":        "riscv64",
  "code-model":  "medium",
  "cpu":         "generic-rv64",
  "data-layout": "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128",
  "eh-frame-header":        false,
  "emit-debug-gdb-scripts": false,
  "features":      "+m,+a,+f,+d,+c",
  "is-builtin":    true,
  "linker":        "rust-lld",
  "linker-flavor": "ld.lld",
  "llvm-abiname":  "lp64d",
  "llvm-target":   "riscv64",
  "max-atomic-width":     64,
  "panic-strategy":       "abort",
  "relocation-model":     "static",
  "supported-sanitizers": [ "kernel-address" ],
  "target-pointer-width": "64"
}