forked from extern/nix-config
13afe8d8cd
These scripts can be manually updated by running the `make update` command. When you do so, visually compare the diffs. This is to ensure that nothing particularly naughty happened upstream. Note that this is not a fool-proof solution since one can simply modify the content returned by any other location a script requests.
388 lines
9.7 KiB
Bash
Executable File
388 lines
9.7 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2016 The Rust Project Developers. See the COPYRIGHT
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# file at the top-level directory of this distribution and at
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# http://rust-lang.org/COPYRIGHT.
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#
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# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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# option. This file may not be copied, modified, or distributed
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# except according to those terms.
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# This is just a little script that can be downloaded from the internet to
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# install rustup. It just does platform detection, downloads the installer
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# and runs it.
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set -u
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RUSTUP_UPDATE_ROOT="https://static.rust-lang.org/rustup/dist"
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#XXX: If you change anything here, please make the same changes in setup_mode.rs
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usage() {
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cat 1>&2 <<EOF
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rustup-init 1.0.0 (408ed84 2017-02-11)
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The installer for rustup
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USAGE:
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rustup-init [FLAGS] [OPTIONS]
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FLAGS:
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-v, --verbose Enable verbose output
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-y Disable confirmation prompt.
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--no-modify-path Don't configure the PATH environment variable
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-h, --help Prints help information
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-V, --version Prints version information
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OPTIONS:
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--default-host <default-host> Choose a default host triple
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--default-toolchain <default-toolchain> Choose a default toolchain to install
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--default-toolchain none Do not install any toolchains
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EOF
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}
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main() {
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downloader --check
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need_cmd uname
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need_cmd mktemp
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need_cmd chmod
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need_cmd mkdir
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need_cmd rm
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need_cmd rmdir
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get_architecture || return 1
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local _arch="$RETVAL"
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assert_nz "$_arch" "arch"
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local _ext=""
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case "$_arch" in
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*windows*)
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_ext=".exe"
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;;
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esac
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local _url="$RUSTUP_UPDATE_ROOT/$_arch/rustup-init$_ext"
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local _dir="$(mktemp -d 2>/dev/null || ensure mktemp -d -t rustup)"
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local _file="$_dir/rustup-init$_ext"
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local _ansi_escapes_are_valid=false
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if [ -t 2 ]; then
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if [ "${TERM+set}" = 'set' ]; then
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case "$TERM" in
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xterm*|rxvt*|urxvt*|linux*|vt*)
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_ansi_escapes_are_valid=true
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;;
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esac
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fi
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fi
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# check if we have to use /dev/tty to prompt the user
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local need_tty=yes
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for arg in "$@"; do
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case "$arg" in
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-h|--help)
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usage
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exit 0
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;;
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-y)
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# user wants to skip the prompt -- we don't need /dev/tty
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need_tty=no
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;;
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*)
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;;
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esac
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done
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if $_ansi_escapes_are_valid; then
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printf "\33[1minfo:\33[0m downloading installer\n" 1>&2
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else
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printf '%s\n' 'info: downloading installer' 1>&2
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fi
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ensure mkdir -p "$_dir"
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ensure downloader "$_url" "$_file"
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ensure chmod u+x "$_file"
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if [ ! -x "$_file" ]; then
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printf '%s\n' "Cannot execute $_file (likely because of mounting /tmp as noexec)." 1>&2
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printf '%s\n' "Please copy the file to a location where you can execute binaries and run ./rustup-init$_ext." 1>&2
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exit 1
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fi
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if [ "$need_tty" = "yes" ]; then
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# The installer is going to want to ask for confirmation by
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# reading stdin. This script was piped into `sh` though and
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# doesn't have stdin to pass to its children. Instead we're going
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# to explicitly connect /dev/tty to the installer's stdin.
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if [ ! -t 1 ]; then
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err "Unable to run interactively. Run with -y to accept defaults, --help for additional options"
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fi
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ignore "$_file" "$@" < /dev/tty
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else
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ignore "$_file" "$@"
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fi
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local _retval=$?
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ignore rm "$_file"
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ignore rmdir "$_dir"
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return "$_retval"
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}
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get_bitness() {
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need_cmd head
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# Architecture detection without dependencies beyond coreutils.
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# ELF files start out "\x7fELF", and the following byte is
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# 0x01 for 32-bit and
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# 0x02 for 64-bit.
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# The printf builtin on some shells like dash only supports octal
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# escape sequences, so we use those.
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local _current_exe_head=$(head -c 5 /proc/self/exe )
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if [ "$_current_exe_head" = "$(printf '\177ELF\001')" ]; then
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echo 32
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elif [ "$_current_exe_head" = "$(printf '\177ELF\002')" ]; then
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echo 64
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else
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err "unknown platform bitness"
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fi
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}
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get_endianness() {
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local cputype=$1
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local suffix_eb=$2
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local suffix_el=$3
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# detect endianness without od/hexdump, like get_bitness() does.
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need_cmd head
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need_cmd tail
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local _current_exe_endianness="$(head -c 6 /proc/self/exe | tail -c 1)"
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if [ "$_current_exe_endianness" = "$(printf '\001')" ]; then
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echo "${cputype}${suffix_el}"
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elif [ "$_current_exe_endianness" = "$(printf '\002')" ]; then
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echo "${cputype}${suffix_eb}"
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else
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err "unknown platform endianness"
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fi
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}
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get_architecture() {
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local _ostype="$(uname -s)"
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local _cputype="$(uname -m)"
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if [ "$_ostype" = Linux ]; then
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if [ "$(uname -o)" = Android ]; then
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local _ostype=Android
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fi
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fi
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if [ "$_ostype" = Darwin -a "$_cputype" = i386 ]; then
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# Darwin `uname -s` lies
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if sysctl hw.optional.x86_64 | grep -q ': 1'; then
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local _cputype=x86_64
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fi
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fi
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case "$_ostype" in
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Android)
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local _ostype=linux-android
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;;
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Linux)
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local _ostype=unknown-linux-gnu
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;;
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FreeBSD)
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local _ostype=unknown-freebsd
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;;
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NetBSD)
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local _ostype=unknown-netbsd
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;;
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DragonFly)
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local _ostype=unknown-dragonfly
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;;
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Darwin)
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local _ostype=apple-darwin
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;;
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MINGW* | MSYS* | CYGWIN*)
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local _ostype=pc-windows-gnu
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;;
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*)
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err "unrecognized OS type: $_ostype"
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;;
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esac
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case "$_cputype" in
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i386 | i486 | i686 | i786 | x86)
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local _cputype=i686
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;;
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xscale | arm)
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local _cputype=arm
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if [ "$_ostype" = "linux-android" ]; then
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local _ostype=linux-androideabi
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fi
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;;
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armv6l)
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local _cputype=arm
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if [ "$_ostype" = "linux-android" ]; then
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local _ostype=linux-androideabi
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else
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local _ostype="${_ostype}eabihf"
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fi
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;;
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armv7l | armv8l)
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local _cputype=armv7
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if [ "$_ostype" = "linux-android" ]; then
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local _ostype=linux-androideabi
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else
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local _ostype="${_ostype}eabihf"
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fi
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;;
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aarch64)
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local _cputype=aarch64
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;;
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x86_64 | x86-64 | x64 | amd64)
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local _cputype=x86_64
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;;
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mips)
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local _cputype="$(get_endianness $_cputype "" 'el')"
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;;
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mips64)
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local _bitness="$(get_bitness)"
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if [ $_bitness = "32" ]; then
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if [ $_ostype = "unknown-linux-gnu" ]; then
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# 64-bit kernel with 32-bit userland
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# endianness suffix is appended later
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local _cputype=mips
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fi
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else
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# only n64 ABI is supported for now
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local _ostype="${_ostype}abi64"
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fi
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local _cputype="$(get_endianness $_cputype "" 'el')"
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;;
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ppc)
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local _cputype=powerpc
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;;
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ppc64)
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local _cputype=powerpc64
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;;
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ppc64le)
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local _cputype=powerpc64le
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;;
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*)
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err "unknown CPU type: $_cputype"
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esac
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# Detect 64-bit linux with 32-bit userland
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if [ $_ostype = unknown-linux-gnu -a $_cputype = x86_64 ]; then
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if [ "$(get_bitness)" = "32" ]; then
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local _cputype=i686
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fi
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fi
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# Detect armv7 but without the CPU features Rust needs in that build,
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# and fall back to arm.
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# See https://github.com/rust-lang-nursery/rustup.rs/issues/587.
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if [ $_ostype = "unknown-linux-gnueabihf" -a $_cputype = armv7 ]; then
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if ensure grep '^Features' /proc/cpuinfo | grep -q -v neon; then
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# At least one processor does not have NEON.
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local _cputype=arm
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fi
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fi
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local _arch="$_cputype-$_ostype"
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RETVAL="$_arch"
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}
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say() {
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echo "rustup: $1"
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}
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err() {
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say "$1" >&2
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exit 1
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}
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need_cmd() {
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if ! check_cmd "$1"
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then err "need '$1' (command not found)"
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fi
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}
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check_cmd() {
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command -v "$1" > /dev/null 2>&1
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return $?
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}
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need_ok() {
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if [ $? != 0 ]; then err "$1"; fi
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}
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assert_nz() {
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if [ -z "$1" ]; then err "assert_nz $2"; fi
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}
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# Run a command that should never fail. If the command fails execution
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# will immediately terminate with an error showing the failing
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# command.
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ensure() {
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"$@"
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need_ok "command failed: $*"
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}
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# This is just for indicating that commands' results are being
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# intentionally ignored. Usually, because it's being executed
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# as part of error handling.
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ignore() {
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"$@"
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}
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# This wraps curl or wget. Try curl first, if not installed,
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# use wget instead.
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downloader() {
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if check_cmd curl
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then _dld=curl
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elif check_cmd wget
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then _dld=wget
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else _dld='curl or wget' # to be used in error message of need_cmd
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fi
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if [ "$1" = --check ]
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then need_cmd "$_dld"
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elif [ "$_dld" = curl ]
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then curl -sSfL "$1" -o "$2"
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elif [ "$_dld" = wget ]
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then wget "$1" -O "$2"
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else err "Unknown downloader" # should not reach here
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fi
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}
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main "$@" || exit 1
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