mirror of
https://github.com/Homebrew/brew.git
synced 2025-07-14 16:09:03 +08:00
19e387d92e
Consequence: you can no longer install when something is already installed, you must upgrade it. This doesn't apply if the formula in question was unlinked. You can still --force installs though. Rationale: the old way of installing over the top would leave symlinks to multiple versions in /usr/local if the old version had a file the newer version didn't. The new upgrade command handles everything properly.
84 lines
2.5 KiB
Ruby
84 lines
2.5 KiB
Ruby
require 'formula_installer'
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require 'hardware'
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require 'blacklist'
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module Homebrew extend self
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def install
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ARGV.named.each do |name|
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msg = blacklisted? name
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raise "No available formula for #{name}\n#{msg}" if msg
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end unless ARGV.force?
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if Process.uid.zero? and not File.stat(HOMEBREW_BREW_FILE).uid.zero?
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# note we only abort if Homebrew is *not* installed as sudo and the user
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# calls brew as root. The fix is to chown brew to root.
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abort "Cowardly refusing to `sudo brew install'"
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end
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install_formulae ARGV.formulae
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end
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def check_ppc
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case Hardware.cpu_type when :ppc, :dunno
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abort <<-EOS.undent
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Sorry, Homebrew does not support your computer's CPU architecture.
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For PPC support, see: http://github.com/sceaga/homebrew/tree/powerpc
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EOS
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end
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end
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def check_writable_install_location
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raise "Cannot write to #{HOMEBREW_CELLAR}" if HOMEBREW_CELLAR.exist? and not HOMEBREW_CELLAR.writable?
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raise "Cannot write to #{HOMEBREW_PREFIX}" unless HOMEBREW_PREFIX.writable? or HOMEBREW_PREFIX.to_s == '/usr/local'
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end
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def check_cc
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if MacOS.snow_leopard?
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if MacOS.llvm_build_version < RECOMMENDED_LLVM
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opoo "You should upgrade to Xcode 3.2.6"
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end
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else
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if (MacOS.gcc_40_build_version < RECOMMENDED_GCC_40) or (MacOS.gcc_42_build_version < RECOMMENDED_GCC_42)
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opoo "You should upgrade to Xcode 3.1.4"
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end
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end
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rescue
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# the reason we don't abort is some formula don't require Xcode
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# TODO allow formula to declare themselves as "not needing Xcode"
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opoo "Xcode is not installed! Builds may fail!"
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end
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def check_macports
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if MacOS.macports_or_fink_installed?
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opoo "It appears you have Macports or Fink installed"
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puts "Software installed with other package managers causes known problems for"
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puts "Homebrew. If formula fail to build uninstall Macports/Fink and reinstall any"
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puts "affected formula."
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end
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end
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def perform_preinstall_checks
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check_ppc
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check_writable_install_location
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check_cc
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check_macports
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end
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def install_formulae formulae
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formulae = [formulae].flatten.compact
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unless formulae.empty?
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perform_preinstall_checks
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formulae.each do |f|
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begin
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fi = FormulaInstaller.new(f)
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fi.install
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fi.caveats
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fi.finish
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rescue FormulaAlreadyInstalledError => e
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opoo e.message
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end
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end
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end
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end
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end
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