if (host_cpu == "x64") {
  if (host_os == "linux") {
    llvm_host_triple = "x86_64-unknown-linux-gnu"
  } else if (host_os == "mac") {
    llvm_host_triple = "x86_64-apple-darwin"
  } else if (host_os == "win") {
    llvm_host_triple = "x86_64-pc-windows"
  }
} else {
  assert(false, "unimplemented host_cpu " + host_cpu)
}

declare_args() {
  # The default target triple.
  llvm_target_triple = llvm_host_triple
}