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#!/usr/bin/env ruby
# This script installs only to /usr/local on macOS.
# On Linux, it installs to /home/linuxbrew/.linuxbrew if you have sudo access
# and ~/.linuxbrew otherwise.
# To install elsewhere you can untar
# https://github.com/Linuxbrew/brew/tarball/master anywhere you like
# or set the environment variable HOMEBREW_PREFIX.
def mac?
RUBY_PLATFORM[/darwin/]
end
def linux?
RUBY_PLATFORM[/linux/]
end
if mac?
HOMEBREW_NAME = "Homebrew".freeze
HOMEBREW_PREFIX = "/usr/local".freeze
HOMEBREW_REPOSITORY = "/usr/local/Homebrew".freeze
HOMEBREW_CACHE = "#{ENV["HOME"]}/Library/Caches/Homebrew".freeze
HOMEBREW_OLD_CACHE = "/Library/Caches/Homebrew".freeze
BREW_REPO = "https://github.com/Homebrew/brew".freeze
CORE_TAP_REPO = "https://github.com/Homebrew/homebrew-core".freeze
else
HOMEBREW_NAME = "Linuxbrew".freeze
HOMEBREW_PREFIX_DEFAULT = "/home/linuxbrew/.linuxbrew".freeze
HOMEBREW_CACHE = "#{ENV["HOME"]}/.cache/Homebrew".freeze
HOMEBREW_OLD_CACHE = nil
BREW_REPO = "https://github.com/Homebrew/brew".freeze
CORE_TAP_REPO = "https://github.com/Linuxbrew/homebrew-core".freeze
end
# TODO: bump version when new macOS is released
MACOS_LATEST_SUPPORTED = "10.14".freeze
# TODO: bump version when new macOS is released
MACOS_OLDEST_SUPPORTED = "10.12".freeze
# no analytics during installation
ENV["HOMEBREW_NO_ANALYTICS_THIS_RUN"] = "1"
ENV["HOMEBREW_NO_ANALYTICS_MESSAGE_OUTPUT"] = "1"
# get nicer global variables
require "English"
module Tty
module_function
def blue
bold 34
end
def red
bold 31
end
def reset
escape 0
end
def bold(code = 39)
escape "1;#{code}"
end
def underline
escape "4;39"
end
def escape(code)
"\033[#{code}m" if STDOUT.tty?
end
end
class Array
def shell_s
cp = dup
first = cp.shift
cp.map { |arg| arg.gsub " ", "\\ " }.unshift(first).join(" ")
end
end
def ohai(*args)
puts "#{Tty.blue}==>#{Tty.bold} #{args.shell_s}#{Tty.reset}"
end
def warn(warning)
puts "#{Tty.red}Warning#{Tty.reset}: #{warning.chomp}"
end
def system(*args)
abort "Failed during: #{args.shell_s}" unless Kernel.system(*args)
end
def sudo?
return @have_sudo unless @have_sudo.nil?
Kernel.system "/usr/bin/sudo", "-v"
@have_sudo = $CHILD_STATUS && $CHILD_STATUS.success?
end
def sudo(*args)
if sudo?
args.unshift("-A") unless ENV["SUDO_ASKPASS"].nil?
ohai "/usr/bin/sudo", *args
system "/usr/bin/sudo", *args
else
ohai *args
system *args
end
end
def getc
system "/bin/stty raw -echo"
if STDIN.respond_to?(:getbyte)
STDIN.getbyte
else
STDIN.getc
end
ensure
system "/bin/stty -raw echo"
end
def wait_for_user
puts
puts "Press RETURN to continue or any other key to abort"
c = getc
# we test for \r and \n because some stuff does \r instead
abort unless (c == 13) || (c == 10)
end
class Version
include Comparable
attr_reader :parts
def initialize(str)
@parts = str.split(".").map { |p| p.to_i }
end
def <=>(other)
parts <=> self.class.new(other).parts
end
end
def force_curl?
ARGV.include?("--force-curl")
end
def macos_version
return unless mac?
@macos_version ||= Version.new(`/usr/bin/sw_vers -productVersion`.chomp[/10\.\d+/])
end
def should_install_command_line_tools?
return false unless mac?
return false if force_curl?
return false if macos_version < "10.9"
if macos_version > "10.13"
!File.exist?("/Library/Developer/CommandLineTools/usr/bin/git")
else
!File.exist?("/Library/Developer/CommandLineTools/usr/bin/git") ||
!File.exist?("/usr/include/iconv.h")
end
end
def git
return false if force_curl?
@git ||= if ENV["GIT"] && File.executable?(ENV["GIT"])
ENV["GIT"]
elsif Kernel.system "/usr/bin/which git >/dev/null"
"git"
else
exe = `xcrun -find git 2>/dev/null`.chomp
exe if $CHILD_STATUS && $CHILD_STATUS.success? && !exe.empty? && File.executable?(exe)
end
return unless @git
# Github only supports HTTPS fetches on 1.7.10 or later:
# https://help.github.com/articles/https-cloning-errors
`#{@git} --version` =~ /git version (\d\.\d+\.\d+)/
return if Regexp.last_match(1).nil?
return if Version.new(Regexp.last_match(1)) < "1.7.10"
@git
end
def user_only_chmod?(path)
return false unless File.directory?(path)
mode = File.stat(path).mode & 0777
# u = (mode >> 6) & 07
# g = (mode >> 3) & 07
# o = (mode >> 0) & 07
mode != 0755
end
def chmod?(path)
File.exist?(path) && !(File.readable?(path) && File.writable?(path) && File.executable?(path))
end
def chown?(path)
!File.owned?(path)
end
def chgrp?(path)
!File.grpowned?(path)
end
# return the shell profile file based on users' preference shell
def shell_profile
case ENV["SHELL"]
when %r{/bash$} && File.readable?("~/.bash_profile") then "~/.bash_profile"
when %r{/zsh$} then "~/.zprofile"
else "~/.profile"
end
end
# Invalidate sudo timestamp before exiting (if it wasn't active before).
Kernel.system "/usr/bin/sudo -n -v 2>/dev/null"
at_exit { Kernel.system "/usr/bin/sudo", "-k" } unless $CHILD_STATUS.success?
# The block form of Dir.chdir fails later if Dir.CWD doesn't exist which I
# guess is fair enough. Also sudo prints a warning message for no good reason
Dir.chdir "/usr"
####################################################################### script
abort "Mac OS X too old, see: https://github.com/mistydemeo/tigerbrew" if mac? && macos_version < "10.5"
abort "Don't run this as root!" if Process.uid.zero?
abort <<-EOABORT unless !mac? || `dsmemberutil checkmembership -U "#{ENV["USER"]}" -G admin`.include?("user is a member")
This script requires the user #{ENV["USER"]} to be an Administrator.
EOABORT
unless mac?
if File.writable?(HOMEBREW_PREFIX_DEFAULT) || File.writable?("/home/linuxbrew") || File.writable?("/home")
HOMEBREW_PREFIX = HOMEBREW_PREFIX_DEFAULT.freeze
else
Kernel.system "/usr/bin/sudo -n -v 2>/dev/null"
unless $CHILD_STATUS.success?
ohai "Select the Linuxbrew installation directory"
puts "- #{Tty.bold}Enter your password#{Tty.reset} to install to #{Tty.underline}#{HOMEBREW_PREFIX_DEFAULT}#{Tty.reset} (#{Tty.bold}recommended#{Tty.reset})"
puts "- #{Tty.bold}Press Control-D#{Tty.reset} to install to #{Tty.underline}#{ENV["HOME"]}/.linuxbrew#{Tty.reset}"
puts "- #{Tty.bold}Press Control-C#{Tty.reset} to cancel installation"
end
if sudo?
HOMEBREW_PREFIX = HOMEBREW_PREFIX_DEFAULT.freeze
else
HOMEBREW_PREFIX = "#{ENV["HOME"]}/.linuxbrew".freeze
end
end
HOMEBREW_REPOSITORY = "#{HOMEBREW_PREFIX}/Homebrew".freeze
end
# Tests will fail if the prefix exists, but we don't have execution
# permissions. Abort in this case.
abort <<-EOABORT if File.directory?(HOMEBREW_PREFIX) && (!File.executable? HOMEBREW_PREFIX)
The Homebrew prefix, #{HOMEBREW_PREFIX}, exists but is not searchable. If this is
not intentional, please restore the default permissions and try running the
installer again:
sudo chmod 775 #{HOMEBREW_PREFIX}
EOABORT
# TODO: bump version when new macOS is released
if mac? && (macos_version > MACOS_LATEST_SUPPORTED ||
macos_version < MACOS_OLDEST_SUPPORTED)
who = "We"
if macos_version > MACOS_LATEST_SUPPORTED
what = "pre-release version"
elsif macos_version < MACOS_OLDEST_SUPPORTED
who << " (and Apple)"
what = "old version"
else
return
end
ohai "You are using macOS #{macos_version.parts.join(".")}."
ohai "#{who} do not provide support for this #{what}."
puts <<-EOS
This installation may not succeed.
After installation, you will encounter build failures and other breakages.
Please create pull-requests instead of asking for help on Homebrew's
GitHub, Discourse, Twitter or IRC. As you are running this #{what},
you are responsible for resolving any issues you experience.
EOS
end
ohai "This script will install:"
puts "#{HOMEBREW_PREFIX}/bin/brew"
puts "#{HOMEBREW_PREFIX}/share/doc/homebrew"
puts "#{HOMEBREW_PREFIX}/share/man/man1/brew.1"
puts "#{HOMEBREW_PREFIX}/share/zsh/site-functions/_brew"
puts "#{HOMEBREW_PREFIX}/etc/bash_completion.d/brew"
puts "#{HOMEBREW_CACHE}/"
puts HOMEBREW_REPOSITORY.to_s
# Keep relatively in sync with
# https://github.com/Homebrew/brew/blob/master/Library/Homebrew/keg.rb
group_chmods = %w[bin etc include lib sbin share opt var
Frameworks
etc/bash_completion.d lib/pkgconfig
share/aclocal share/doc share/info share/locale share/man
share/man/man1 share/man/man2 share/man/man3 share/man/man4
share/man/man5 share/man/man6 share/man/man7 share/man/man8
var/log
bin/brew].
map { |d| File.join(HOMEBREW_PREFIX, d) }.
select { |d| chmod?(d) }
# zsh refuses to read from these directories if group writable
zsh_dirs = %w[share/zsh share/zsh/site-functions].
map { |d| File.join(HOMEBREW_PREFIX, d) }
mkdirs = %w[bin etc include lib sbin share var opt
share/zsh share/zsh/site-functions
Cellar Caskroom Homebrew Frameworks].
map { |d| File.join(HOMEBREW_PREFIX, d) }.
reject { |d| File.directory?(d) }
user_chmods = zsh_dirs.select { |d| user_only_chmod?(d) }
chmods = group_chmods + user_chmods
chowns = chmods.select { |d| chown?(d) }
chgrps = chmods.select { |d| chgrp?(d) }
group = `id -gn`.chomp
abort "error: id -gn: failed" unless $CHILD_STATUS.success? && !group.empty?
unless group_chmods.empty?
ohai "The following existing directories will be made group writable:"
puts(*group_chmods)
end
unless user_chmods.empty?
ohai "The following existing directories will be made writable by user only:"
puts(*user_chmods)
end
unless chowns.empty?
ohai "The following existing directories will have their owner set to #{Tty.underline}#{ENV["USER"]}#{Tty.reset}:"
puts(*chowns)
end
unless chgrps.empty?
ohai "The following existing directories will have their group set to #{Tty.underline}#{group}#{Tty.reset}:"
puts(*chgrps)
end
unless mkdirs.empty?
ohai "The following new directories will be created:"
puts(*mkdirs)
end
if should_install_command_line_tools?
ohai "The Xcode Command Line Tools will be installed."
end
wait_for_user if STDIN.tty? && !ENV["CI"]
if File.directory? HOMEBREW_PREFIX
sudo "/bin/chmod", "u+rwx", *chmods unless chmods.empty?
sudo "/bin/chmod", "g+rwx", *group_chmods unless group_chmods.empty?
sudo "/bin/chmod", "755", *user_chmods unless user_chmods.empty?
sudo "/bin/chown", ENV["USER"], *chowns unless chowns.empty?
sudo "/bin/chgrp", group, *chgrps unless chgrps.empty?
else
sudo "/bin/mkdir", "-p", HOMEBREW_PREFIX
sudo "/bin/chown", "#{ENV["USER"]}:#{group}", HOMEBREW_PREFIX
end
unless mkdirs.empty?
sudo "/bin/mkdir", "-p", *mkdirs
sudo "/bin/chmod", "g+rwx", *mkdirs
sudo "/bin/chmod", "755", *zsh_dirs
sudo "/bin/chown", ENV["USER"], *mkdirs
sudo "/bin/chgrp", group, *mkdirs
end
[HOMEBREW_CACHE, HOMEBREW_OLD_CACHE].compact.each do |cache|
sudo "/bin/mkdir", "-p", cache unless File.directory? cache
sudo "/bin/chmod", "g+rwx", cache if chmod? cache
sudo "/bin/chown", ENV["USER"], cache if chown? cache
sudo "/bin/chgrp", group, cache if chgrp? cache
end
if should_install_command_line_tools?
ohai "Searching online for the Command Line Tools"
# This temporary file prompts the 'softwareupdate' utility to list the Command Line Tools
clt_placeholder = "/tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress"
sudo "/usr/bin/touch", clt_placeholder
clt_label = `/usr/sbin/softwareupdate -l | grep -B 1 -E "Command Line (Developer|Tools)" | awk -F"*" '/^ +\\*/ {print $2}' | sed 's/^ *//' | tail -n1`.chomp
ohai "Installing #{clt_label}"
sudo "/usr/sbin/softwareupdate", "-i", clt_label
sudo "/bin/rm", "-f", clt_placeholder
sudo "/usr/bin/xcode-select", "--switch", "/Library/Developer/CommandLineTools"
end
# Headless install may have failed, so fallback to original 'xcode-select' method
if should_install_command_line_tools? && STDIN.tty?
ohai "Installing the Command Line Tools (expect a GUI popup):"
sudo "/usr/bin/xcode-select", "--install"
puts "Press any key when the installation has completed."
getc
sudo "/usr/bin/xcode-select", "--switch", "/Library/Developer/CommandLineTools"
end
abort <<-EOABORT if mac? && `/usr/bin/xcrun clang 2>&1` =~ /license/ && !$CHILD_STATUS.success?
You have not agreed to the Xcode license.
Before running the installer again please agree to the license by opening
Xcode.app or running:
sudo xcodebuild -license
EOABORT
ohai "Downloading and installing #{HOMEBREW_NAME}..."
Dir.chdir HOMEBREW_REPOSITORY do
if git
# we do it in four steps to avoid merge errors when reinstalling
system git, "init", "-q"
# "git remote add" will fail if the remote is defined in the global config
system git, "config", "remote.origin.url", BREW_REPO
system git, "config", "remote.origin.fetch", "+refs/heads/*:refs/remotes/origin/*"
# ensure we don't munge line endings on checkout
system git, "config", "core.autocrlf", "false"
args = git, "fetch", "origin", "master:refs/remotes/origin/master",
"--tags", "--force"
system(*args)
system git, "reset", "--hard", "origin/master"
system "ln", "-sf", "#{HOMEBREW_REPOSITORY}/bin/brew", "#{HOMEBREW_PREFIX}/bin/brew" unless HOMEBREW_REPOSITORY == HOMEBREW_PREFIX
system "#{HOMEBREW_PREFIX}/bin/brew", "update", "--force"
else
# -m to stop tar erroring out if it can't modify the mtime for root owned directories
# pipefail to cause the exit status from curl to propagate if it fails
curl_flags = "fsSL"
curl_flags += "k" if mac? && macos_version < "10.6"
core_tap = "#{HOMEBREW_PREFIX}/Homebrew/Library/Taps/homebrew/homebrew-core"
system "/bin/bash -o pipefail -c 'curl -#{curl_flags} #{BREW_REPO}/tarball/master | /bin/tar xz -m --strip 1'"
system "ln", "-sf", "#{HOMEBREW_REPOSITORY}/bin/brew", "#{HOMEBREW_PREFIX}/bin/brew" unless HOMEBREW_REPOSITORY == HOMEBREW_PREFIX
system "/bin/mkdir", "-p", core_tap
Dir.chdir core_tap do
system "/bin/bash -o pipefail -c 'curl -#{curl_flags} #{CORE_TAP_REPO}/tarball/master | /bin/tar xz -m --strip 1'"
end
end
end
ohai "Installation successful!"
puts
# Use the shell's audible bell.
print "\a"
# Use an extra newline and bold to avoid this being missed.
ohai "Homebrew has enabled anonymous aggregate formulae and cask analytics."
puts <<-EOS
#{Tty.bold}Read the analytics documentation (and how to opt-out) here:
#{Tty.underline}https://docs.brew.sh/Analytics.html#{Tty.reset}
EOS
ohai "Homebrew is run entirely by unpaid volunteers. Please consider donating:"
puts <<-EOS
#{Tty.underline}https://github.com/Homebrew/brew#donations#{Tty.reset}
EOS
if git
Dir.chdir HOMEBREW_REPOSITORY do
system git, "config", "--local", "--replace-all", "homebrew.analyticsmessage", "true"
system git, "config", "--local", "--replace-all", "homebrew.caskanalyticsmessage", "true"
end
end
ohai "Next steps:"
if !mac?
puts <<-EOS
- Install the Linuxbrew dependencies if you have sudo access:
#{Tty.bold}Debian, Ubuntu, etc.#{Tty.reset}
sudo apt-get install build-essential
#{Tty.bold}Fedora, Red Hat, CentOS, etc.#{Tty.reset}
sudo yum groupinstall 'Development Tools'
See #{Tty.underline}http://linuxbrew.sh/#dependencies#{Tty.reset} for more information.
- Add Linuxbrew to your #{Tty.underline}#{shell_profile}#{Tty.reset} by running
echo 'eval $(#{HOMEBREW_PREFIX}/bin/brew shellenv)' >>#{shell_profile}
- Add Linuxbrew to your #{Tty.bold}PATH#{Tty.reset}
PATH="#{HOMEBREW_PREFIX}/bin:$PATH"
- We recommend that you install GCC by running:
brew install gcc
- After modifying your shell profile, you may need to restart your session
(logout and then log back in) if the brew command isn't found.
EOS
elsif macos_version < "10.9" && macos_version > "10.6"
`/usr/bin/cc --version 2> /dev/null` =~ /clang-(\d{2,})/
version = Regexp.last_match(1).to_i
if version < 425
puts "- Install the #{Tty.bold}Command Line Tools for Xcode:"
puts " #{Tty.underline}https://developer.apple.com/downloads#{Tty.reset}"
end
elsif !File.exist? "/usr/bin/cc"
puts "- Install #{Tty.bold}Xcode:"
puts " #{Tty.underline}https://developer.apple.com/xcode#{Tty.reset}"
end
unless git
puts "- Run `brew update --force` to complete installation by installing:"
puts " #{HOMEBREW_PREFIX}/share/doc/homebrew"
puts " #{HOMEBREW_PREFIX}/share/man/man1/brew.1"
puts " #{HOMEBREW_PREFIX}/share/zsh/site-functions/_brew"
puts " #{HOMEBREW_PREFIX}/etc/bash_completion.d/brew"
puts " #{HOMEBREW_REPOSITORY}/.git"
end
puts "- Run `brew help` to get started"
puts "- Further documentation: "
puts " #{Tty.underline}https://docs.brew.sh#{Tty.reset}"
warn "#{HOMEBREW_PREFIX}/bin is not in your PATH." unless ENV["PATH"].split(":").include? "#{HOMEBREW_PREFIX}/bin"
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