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rustup-setup.sh
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rustup-setup.sh
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#!/bin/sh
# Copyright 2016 The Rust Project Developers. See the COPYRIGHT
# file at the top-level directory of this distribution and at
# http://rust-lang.org/COPYRIGHT.
#
# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
# option. This file may not be copied, modified, or distributed
# except according to those terms.
# This is just a little script that can be curled from the internet to
# install rustup. It just does platform detection, curls the installer
# and runs it.
set -u
RUSTUP_UPDATE_ROOT="https://static.rust-lang.org/rustup/dist"
main() {
need_cmd curl
need_cmd mktemp
need_cmd chmod
need_cmd mkdir
need_cmd rm
need_cmd rmdir
need_cmd printf
get_architecture || return 1
local _arch="$RETVAL"
assert_nz "$_arch" "arch"
local _ext=""
case "$_arch" in
*windows*)
_ext=".exe"
;;
esac
local _url="$RUSTUP_UPDATE_ROOT/$_arch/rustup-setup$_ext"
local _dir="$(mktemp -d 2>/dev/null || ensure mktemp -d -t rustup)"
local _file="$_dir/rustup-setup$_ext"
printf "\33[1minfo:\33[0m downloading installer\n"
ensure mkdir -p "$_dir"
ensure curl -sSfL "$_url" -o "$_file"
ensure chmod u+x "$_file"
# The installer is going to want to ask for confirmation by
# reading stdin. This script was piped into `sh` though and
# doesn't have stdin to pass to its children. Instead we're going
# to explicitly connect /dev/tty to the installer's stdin.
if [ ! -e "/dev/tty" ]; then
err "/dev/tty does not exist"
fi
run "$_file" < /dev/tty
local _retval=$?
ignore rm "$_file"
ignore rmdir "$_dir"
return "$_retval"
}
get_architecture() {
local _ostype="$(uname -s)"
local _cputype="$(uname -m)"
if [ "$_ostype" = Darwin -a "$_cputype" = i386 ]; then
# Darwin `uname -s` lies
if sysctl hw.optional.x86_64 | grep -q ': 1'; then
local _cputype=x86_64
fi
fi
case "$_ostype" in
Linux)
local _ostype=unknown-linux-gnu
;;
FreeBSD)
local _ostype=unknown-freebsd
;;
DragonFly)
local _ostype=unknown-dragonfly
;;
Darwin)
local _ostype=apple-darwin
;;
MINGW* | MSYS* | CYGWIN*)
local _ostype=pc-windows-gnu
;;
*)
err "unrecognized OS type: $_ostype"
;;
esac
case "$_cputype" in
i386 | i486 | i686 | i786 | x86)
local _cputype=i686
;;
xscale | arm)
local _cputype=arm
;;
armv6l)
local _cputype=arm
local _ostype="${_ostype}eabihf"
;;
armv7l)
local _cputype=armv7
local _ostype="${_ostype}eabihf"
;;
x86_64 | x86-64 | x64 | amd64)
local _cputype=x86_64
;;
*)
err "unknown CPU type: $CFG_CPUTYPE"
esac
# Detect 64-bit linux with 32-bit userland
if [ $_ostype = unknown-linux-gnu -a $_cputype = x86_64 ]; then
# $SHELL does not exist in standard 'sh', so probably only exists
# if configure is running in an interactive bash shell. /usr/bin/env
# exists *everywhere*.
local _bin_to_probe="${SHELL-bogus_shell}"
if [ ! -e "$_bin_to_probe" -a -e "/usr/bin/env" ]; then
_bin_to_probe="/usr/bin/env"
fi
# $SHELL may be not a binary
if [ -e "$_bin_to_probe" ]; then
file -L "$_bin_to_probe" | grep -q "text"
if [ $? = 0 ]; then
_bin_to_probe="/usr/bin/env"
fi
fi
if [ -e "$_bin_to_probe" ]; then
file -L "$_bin_to_probe" | grep -q "x86[_-]64"
if [ $? != 0 ]; then
local _cputype=i686
fi
fi
fi
local _arch="$_cputype-$_ostype"
RETVAL="$_arch"
}
say() {
echo "rustup: $1"
}
say_err() {
say "$1" >&2
}
err() {
say "$1" >&2
exit 1
}
need_cmd() {
if ! command -v "$1" > /dev/null 2>&1
then err "need '$1' (command not found)"
fi
}
need_ok() {
if [ $? != 0 ]; then err "$1"; fi
}
assert_nz() {
if [ -z "$1" ]; then err "assert_nz $2"; fi
}
# Run a command that should never fail. If the command fails execution
# will immediately terminate with an error showing the failing
# command.
ensure() {
"$@"
need_ok "command failed: $*"
}
# This is just for indicating that commands' results are being
# intentionally ignored. Usually, because it's being executed
# as part of error handling.
ignore() {
run "$@"
}
# Runs a command and prints it to stderr if it fails.
run() {
"$@"
local _retval=$?
if [ $_retval != 0 ]; then
say_err "command failed: $*"
fi
return $_retval
}
main "$@" || exit 1