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class Keg
def fix_install_names
dylibs.each do |dylib|
bad_install_names_for dylib do |id, bad_names|
dylib.ensure_writable do
system "install_name_tool", "-id", id, dylib
bad_names.each do |bad_name|
# we should be more careful here, check the path we point to exists etc.
system "install_name_tool", "-change", bad_name, "@loader_path/#{bad_name}", dylib
end
end
end
end
end
private
OTOOL_RX = /\t(.*) \(compatibility version (\d+\.)*\d+, current version (\d+\.)*\d+\)/
def bad_install_names_for dylib
dylib = dylib.to_s
ENV['HOMEBREW_DYLIB'] = dylib # solves all shell escaping problems
install_names = `otool -L "$HOMEBREW_DYLIB"`.split "\n"
install_names.shift # first line is fluff
install_names.map!{ |s| OTOOL_RX =~ s && $1 }
id = install_names.shift
install_names.compact!
install_names.reject!{ |fn| fn =~ /^@(loader|executable)_path/ }
install_names.reject!{ |fn| fn.start_with? '/' }
unless install_names.empty? and id == dylib # avoid the work if possible
yield dylib, install_names
end
end
def dylibs
if (lib = join 'lib').directory?
lib.children.select{ |pn| pn.extname == '.dylib' and not pn.symlink? }
else
[]
end
end
end
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