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#!/bin/bash
# This is just a little script that can be downloaded from the internet to
# install rustup. It just does platform detection, downloads the installer
# and runs it.
set -u
# If RUSTUP_UPDATE_ROOT is unset or empty, default it.
RUSTUP_UPDATE_ROOT="${RUSTUP_UPDATE_ROOT:-https://static.rust-lang.org/rustup}"
#XXX: If you change anything here, please make the same changes in setup_mode.rs
usage() {
cat 1>&2 <<EOF
rustup-init 1.21.0 (fd87b86c6 2019-12-19)
The installer for rustup
USAGE:
rustup-init [FLAGS] [OPTIONS]
FLAGS:
-v, --verbose Enable verbose output
-q, --quiet Disable progress output
-y Disable confirmation prompt.
--no-modify-path Don't configure the PATH environment variable
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
--default-host <default-host> Choose a default host triple
--default-toolchain <default-toolchain> Choose a default toolchain to install
--default-toolchain none Do not install any toolchains
--profile [minimal|default|complete] Choose a profile
-c, --component <components>... Component name to also install
-t, --target <targets>... Target name to also install
EOF
}
main() {
downloader --check
need_cmd uname
need_cmd mktemp
need_cmd chmod
need_cmd mkdir
need_cmd rm
need_cmd rmdir
get_architecture || return 1
local _arch="$RETVAL"
assert_nz "$_arch" "arch"
local _ext=""
case "$_arch" in
*windows*)
_ext=".exe"
;;
esac
local _url="${RUSTUP_UPDATE_ROOT}/dist/${_arch}/rustup-init${_ext}"
local _dir
_dir="$(mktemp -d 2>/dev/null || ensure mktemp -d -t rustup)"
local _file="${_dir}/rustup-init${_ext}"
local _ansi_escapes_are_valid=false
if [ -t 2 ]; then
if [ "${TERM+set}" = 'set' ]; then
case "$TERM" in
xterm*|rxvt*|urxvt*|linux*|vt*)
_ansi_escapes_are_valid=true
;;
esac
fi
fi
# check if we have to use /dev/tty to prompt the user
local need_tty=yes
for arg in "$@"; do
case "$arg" in
-h|--help)
usage
exit 0
;;
-y)
# user wants to skip the prompt -- we don't need /dev/tty
need_tty=no
;;
*)
;;
esac
done
if $_ansi_escapes_are_valid; then
printf "\33[1minfo:\33[0m downloading installer\n" 1>&2
else
printf '%s\n' 'info: downloading installer' 1>&2
fi
ensure mkdir -p "$_dir"
ensure downloader "$_url" "$_file" "$_arch"
ensure chmod u+x "$_file"
if [ ! -x "$_file" ]; then
printf '%s\n' "Cannot execute $_file (likely because of mounting /tmp as noexec)." 1>&2
printf '%s\n' "Please copy the file to a location where you can execute binaries and run ./rustup-init${_ext}." 1>&2
exit 1
fi
if [ "$need_tty" = "yes" ]; then
# The installer is going to want to ask for confirmation by
# reading stdin. This script was piped into `sh` though and
# doesn't have stdin to pass to its children. Instead we're going
# to explicitly connect /dev/tty to the installer's stdin.
if [ ! -t 1 ]; then
err "Unable to run interactively. Run with -y to accept defaults, --help for additional options"
fi
ignore "$_file" "$@" < /dev/tty
else
ignore "$_file" "$@"
fi
local _retval=$?
ignore rm "$_file"
ignore rmdir "$_dir"
return "$_retval"
}
get_bitness() {
need_cmd head
# Architecture detection without dependencies beyond coreutils.
# ELF files start out "\x7fELF", and the following byte is
# 0x01 for 32-bit and
# 0x02 for 64-bit.
# The printf builtin on some shells like dash only supports octal
# escape sequences, so we use those.
local _current_exe_head
_current_exe_head=$(head -c 5 /proc/self/exe )
if [ "$_current_exe_head" = "$(printf '\177ELF\001')" ]; then
echo 32
elif [ "$_current_exe_head" = "$(printf '\177ELF\002')" ]; then
echo 64
else
err "unknown platform bitness"
fi
}
get_endianness() {
local cputype=$1
local suffix_eb=$2
local suffix_el=$3
# detect endianness without od/hexdump, like get_bitness() does.
need_cmd head
need_cmd tail
local _current_exe_endianness
_current_exe_endianness="$(head -c 6 /proc/self/exe | tail -c 1)"
if [ "$_current_exe_endianness" = "$(printf '\001')" ]; then
echo "${cputype}${suffix_el}"
elif [ "$_current_exe_endianness" = "$(printf '\002')" ]; then
echo "${cputype}${suffix_eb}"
else
err "unknown platform endianness"
fi
}
get_architecture() {
local _ostype _cputype _bitness _arch _clibtype
_ostype="$(uname -s)"
_cputype="$(uname -m)"
_clibtype="gnu"
if [ "$_ostype" = Linux ]; then
if [ "$(uname -o)" = Android ]; then
_ostype=Android
fi
if ldd --version 2>&1 | grep -q 'musl'; then
_clibtype="musl"
fi
fi
if [ "$_ostype" = Darwin ] && [ "$_cputype" = i386 ]; then
# Darwin `uname -m` lies
if sysctl hw.optional.x86_64 | grep -q ': 1'; then
_cputype=x86_64
fi
fi
case "$_ostype" in
Android)
_ostype=linux-android
;;
Linux)
_ostype=unknown-linux-$_clibtype
_bitness=$(get_bitness)
;;
FreeBSD)
_ostype=unknown-freebsd
;;
NetBSD)
_ostype=unknown-netbsd
;;
DragonFly)
_ostype=unknown-dragonfly
;;
Darwin)
_ostype=apple-darwin
;;
MINGW* | MSYS* | CYGWIN*)
_ostype=pc-windows-gnu
;;
*)
err "unrecognized OS type: $_ostype"
;;
esac
case "$_cputype" in
i386 | i486 | i686 | i786 | x86)
_cputype=i686
;;
xscale | arm)
_cputype=arm
if [ "$_ostype" = "linux-android" ]; then
_ostype=linux-androideabi
fi
;;
armv6l)
_cputype=arm
if [ "$_ostype" = "linux-android" ]; then
_ostype=linux-androideabi
else
_ostype="${_ostype}eabihf"
fi
;;
armv7l | armv8l)
_cputype=armv7
if [ "$_ostype" = "linux-android" ]; then
_ostype=linux-androideabi
else
_ostype="${_ostype}eabihf"
fi
;;
aarch64)
_cputype=aarch64
;;
x86_64 | x86-64 | x64 | amd64)
_cputype=x86_64
;;
mips)
_cputype=$(get_endianness mips '' el)
;;
mips64)
if [ "$_bitness" -eq 64 ]; then
# only n64 ABI is supported for now
_ostype="${_ostype}abi64"
_cputype=$(get_endianness mips64 '' el)
fi
;;
ppc)
_cputype=powerpc
;;
ppc64)
_cputype=powerpc64
;;
ppc64le)
_cputype=powerpc64le
;;
s390x)
_cputype=s390x
;;
*)
err "unknown CPU type: $_cputype"
esac
# Detect 64-bit linux with 32-bit userland
if [ "${_ostype}" = unknown-linux-gnu ] && [ "${_bitness}" -eq 32 ]; then
case $_cputype in
x86_64)
_cputype=i686
;;
mips64)
_cputype=$(get_endianness mips '' el)
;;
powerpc64)
_cputype=powerpc
;;
aarch64)
_cputype=armv7
if [ "$_ostype" = "linux-android" ]; then
_ostype=linux-androideabi
else
_ostype="${_ostype}eabihf"
fi
;;
esac
fi
# Detect armv7 but without the CPU features Rust needs in that build,
# and fall back to arm.
# See https://github.com/rust-lang/rustup.rs/issues/587.
if [ "$_ostype" = "unknown-linux-gnueabihf" ] && [ "$_cputype" = armv7 ]; then
if ensure grep '^Features' /proc/cpuinfo | grep -q -v neon; then
# At least one processor does not have NEON.
_cputype=arm
fi
fi
_arch="${_cputype}-${_ostype}"
RETVAL="$_arch"
}
say() {
printf 'rustup: %s\n' "$1"
}
err() {
say "$1" >&2
exit 1
}
need_cmd() {
if ! check_cmd "$1"; then
err "need '$1' (command not found)"
fi
}
check_cmd() {
command -v "$1" > /dev/null 2>&1
}
assert_nz() {
if [ -z "$1" ]; then err "assert_nz $2"; fi
}
# Run a command that should never fail. If the command fails execution
# will immediately terminate with an error showing the failing
# command.
ensure() {
if ! "$@"; then err "command failed: $*"; fi
}
# This is just for indicating that commands' results are being
# intentionally ignored. Usually, because it's being executed
# as part of error handling.
ignore() {
"$@"
}
# This wraps curl or wget. Try curl first, if not installed,
# use wget instead.
downloader() {
local _dld
if check_cmd curl; then
_dld=curl
elif check_cmd wget; then
_dld=wget
else
_dld='curl or wget' # to be used in error message of need_cmd
fi
if [ "$1" = --check ]; then
need_cmd "$_dld"
elif [ "$_dld" = curl ]; then
if ! check_help_for "$3" curl --proto --tlsv1.2; then
echo "Warning: Not forcing TLS v1.2, this is potentially less secure"
curl --silent --show-error --fail --location "$1" --output "$2"
else
curl --proto '=https' --tlsv1.2 --silent --show-error --fail --location "$1" --output "$2"
fi
elif [ "$_dld" = wget ]; then
if ! check_help_for "$3" wget --https-only --secure-protocol; then
echo "Warning: Not forcing TLS v1.2, this is potentially less secure"
wget "$1" -O "$2"
else
wget --https-only --secure-protocol=TLSv1_2 "$1" -O "$2"
fi
else
err "Unknown downloader" # should not reach here
fi
}
check_help_for() {
local _arch
local _cmd
local _arg
local _ok
_arch="$1"
shift
_cmd="$1"
_ok="y"
shift
case "$_arch" in
# If we're running on OS-X, older than 10.13, then we always
# fail to find these options to force fallback
*darwin*)
if check_cmd sw_vers; then
if [ "$(sw_vers -productVersion | cut -d. -f2)" -lt 13 ]; then
# Older than 10.13
echo "Warning: Detected OS X platform older than 10.13"
_ok="n"
fi
fi
;;
esac
for _arg in "$@"; do
if ! "$_cmd" --help | grep -q -- "$_arg"; then
_ok="n"
fi
done
test "$_ok" = "y"
}
main "$@" || exit 1
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