91 lines
2.9 KiB
Ruby
91 lines
2.9 KiB
Ruby
#: * `ln`, `link` [`--overwrite`] [`--dry-run`] [`--force`] <formula>:
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#: Symlink all of <formula>'s installed files into the Homebrew prefix. This
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#: is done automatically when you install formulae but can be useful for DIY
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#: installations.
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#:
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#: If `--overwrite` is passed, Homebrew will delete files which already exist in
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#: the prefix while linking.
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#:
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#: If `--dry-run` or `-n` is passed, Homebrew will list all files which would
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#: be linked or which would be deleted by `brew link --overwrite`, but will not
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#: actually link or delete any files.
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#:
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#: If `--force` (or `-f`) is passed, Homebrew will allow keg-only formulae to be linked.
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require "ostruct"
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module Homebrew
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module_function
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def link
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raise KegUnspecifiedError if ARGV.named.empty?
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mode = OpenStruct.new
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mode.overwrite = true if ARGV.include? "--overwrite"
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mode.dry_run = true if ARGV.dry_run?
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ARGV.kegs.each do |keg|
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keg_only = Formulary.keg_only?(keg.rack)
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if HOMEBREW_PREFIX.to_s == "/usr/local" && keg_only &&
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keg.name.start_with?("openssl", "libressl")
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opoo <<~EOS
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Refusing to link: #{keg.name}
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Linking keg-only #{keg.name} means you may end up linking against the insecure,
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deprecated system OpenSSL while using the headers from Homebrew's #{keg.name}.
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Instead, pass the full include/library paths to your compiler e.g.:
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-I#{HOMEBREW_PREFIX}/opt/#{keg.name}/include -L#{HOMEBREW_PREFIX}/opt/#{keg.name}/lib
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EOS
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next
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elsif keg.linked?
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opoo "Already linked: #{keg}"
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puts "To relink: brew unlink #{keg.name} && brew link #{keg.name}"
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next
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elsif keg_only && !ARGV.force?
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opoo "#{keg.name} is keg-only and must be linked with --force"
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puts "Note that doing so can interfere with building software."
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puts_keg_only_path_message(keg)
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next
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elsif mode.dry_run && mode.overwrite
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puts "Would remove:"
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keg.link(mode)
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next
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elsif mode.dry_run
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puts "Would link:"
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keg.link(mode)
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puts_keg_only_path_message(keg) if keg_only
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next
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end
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keg.lock do
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print "Linking #{keg}... "
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puts if ARGV.verbose?
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begin
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n = keg.link(mode)
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rescue Keg::LinkError
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puts
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raise
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else
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puts "#{n} symlinks created"
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end
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puts_keg_only_path_message(keg) if keg_only && !ARGV.homebrew_developer?
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end
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end
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end
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def puts_keg_only_path_message(keg)
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bin = keg/"bin"
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sbin = keg/"sbin"
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return if !bin.directory? && !sbin.directory?
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opt = HOMEBREW_PREFIX/"opt/#{keg.name}"
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puts "\nIf you need to have this software first in your PATH instead consider running:"
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puts " #{Utils::Shell.prepend_path_in_profile(opt/"bin")}" if bin.directory?
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puts " #{Utils::Shell.prepend_path_in_profile(opt/"sbin")}" if sbin.directory?
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end
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end
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