Support rust

tools/rustup-hash.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+set -CeEuo pipefail
+IFS=$'\n\t'
+trap -- 's=$?; printf >&2 "%s\n" "${0##*/}:${LINENO}: \`${BASH_COMMAND}\` exit with ${s}"; exit ${s}' ERR
+cd -- "$(dirname -- "$0")"/..
+
+# Get sha256 hash of rustup-init binaries
+
+# NB: Synch with main.sh.
+rustup_version=1.29.0
+targets=(
+  x86_64-unknown-linux-gnu
+  x86_64-unknown-linux-musl
+  aarch64-unknown-linux-gnu
+  aarch64-unknown-linux-musl
+  powerpc64le-unknown-linux-gnu
+  powerpc64le-unknown-linux-musl
+  riscv64gc-unknown-linux-gnu
+  # riscv64gc-unknown-linux-musl # tier 2 without host tools
+  s390x-unknown-linux-gnu
+  # s390x-unknown-linux-musl # tier 3
+  x86_64-apple-darwin
+  aarch64-apple-darwin
+  x86_64-pc-windows-msvc
+  aarch64-pc-windows-msvc
+)
+
+for rust_target in "${targets[@]}"; do
+  exe=''
+  case "${rust_target}" in
+    *-windows*) exe=.exe ;;
+  esac
+  url="https://static.rust-lang.org/rustup/archive/${rustup_version}/${rust_target}/rustup-init${exe}.sha256"
+  printf '%s: ' "${rust_target}"
+  curl --proto '=https' --tlsv1.2 -fsSL --retry 10 "${url}" | cut -d' ' -f1
+done