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require 'formula_installer'
require 'hardware'
require 'blacklist'
module Homebrew extend self
def install
raise FormulaUnspecifiedError if ARGV.named.empty?
ARGV.named.each do |name|
msg = blacklisted? name
raise "No available formula for #{name}\n#{msg}" if msg
end unless ARGV.force?
ARGV.formulae.each do |f|
if File.directory? HOMEBREW_REPOSITORY/"Library/LinkedKegs/#{f.name}"
raise "#{f} already installed\nTry: brew upgrade #{f}"
end
end unless ARGV.force?
if Process.uid.zero? and not File.stat(HOMEBREW_BREW_FILE).uid.zero?
# note we only abort if Homebrew is *not* installed as sudo and the user
# calls brew as root. The fix is to chown brew to root.
abort "Cowardly refusing to `sudo brew install'"
end
install_formulae ARGV.formulae
end
def check_ppc
case Hardware.cpu_type when :ppc, :dunno
abort <<-EOS.undent
Sorry, Homebrew does not support your computer's CPU architecture.
For PPC support, see: http://github.com/sceaga/homebrew/tree/powerpc
EOS
end
end
def check_writable_install_location
raise "Cannot write to #{HOMEBREW_CELLAR}" if HOMEBREW_CELLAR.exist? and not HOMEBREW_CELLAR.writable?
raise "Cannot write to #{HOMEBREW_PREFIX}" unless HOMEBREW_PREFIX.writable? or HOMEBREW_PREFIX.to_s == '/usr/local'
end
def check_cc
if MacOS.snow_leopard?
if MacOS.llvm_build_version < RECOMMENDED_LLVM
opoo "You should upgrade to Xcode 3.2.6"
end
else
if (MacOS.gcc_40_build_version < RECOMMENDED_GCC_40) or (MacOS.gcc_42_build_version < RECOMMENDED_GCC_42)
opoo "You should upgrade to Xcode 3.1.4"
end
end
rescue
# the reason we don't abort is some formula don't require Xcode
# TODO allow formula to declare themselves as "not needing Xcode"
opoo "Xcode is not installed! Builds may fail!"
end
def check_macports
if MacOS.macports_or_fink_installed?
opoo "It appears you have MacPorts or Fink installed."
puts "Software installed with other package managers causes known problems for"
puts "Homebrew. If a formula fails to build, uninstall MacPorts/Fink and try again."
end
end
def check_cellar
FileUtils.mkdir_p HOMEBREW_CELLAR if not File.exist? HOMEBREW_CELLAR
rescue
raise <<-EOS.undent
Could not create #{HOMEBREW_CELLAR}
Check you have permission to write to #{HOMEBREW_CELLAR.parent}
EOS
end
def perform_preinstall_checks
check_ppc
check_writable_install_location
check_cc
check_macports
check_cellar
end
def install_formulae formulae
formulae = [formulae].flatten.compact
unless formulae.empty?
perform_preinstall_checks
formulae.each do |f|
# Check formula status and skip if necessary---a formula passed on the
# command line may have been installed to satisfy a dependency.
next if f.installed? unless ARGV.force?
# Building head-only without --HEAD is an error
if not ARGV.build_head? and f.standard.nil?
raise "This is a head-only formula; install with `brew install --HEAD #{f.name}`"
end
# Building stable-only with --HEAD is an error
if ARGV.build_head? and f.unstable.nil?
raise "No head is defined for #{f.name}"
end
begin
fi = FormulaInstaller.new(f)
fi.install
fi.caveats
fi.finish
rescue FormulaAlreadyInstalledError => e
opoo e.message
end
end
end
end
end
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