Fix the libraries paths used by binaries and libraries of Homebrew. Could be improved to do it recursively. Need to use HOMEBREW_PREFIX, not /usr/local directly

fix_libraries_paths.rb

puts "sudo is needed, because we need to write in read-only binaries and libraries"

# should maybe try with system if not found, and in keg-only

def fix_libraries_paths(binary, recurse = false)
  binary = File.expand_path binary
  puts binary
  libraries = `otool -L #{binary}`.lines.drop(1)
  libraries = libraries.map { |library| library.split(/\s/)[1] }
  libraries.select { |library| library.start_with? '/usr/local/Cellar/' }.each { |library|
    lib = File.basename(library).sub(/[._-](?:\d+\.)+dylib$/, '.dylib')
    org_lib = File.basename(library)
    next if library.include? File.basename(binary, File.extname(binary))
    good_path = "/usr/local/lib/#{lib}"
    good_path_org = "/usr/local/lib/#{org_lib}"
    if File.exist? good_path
      system "sudo install_name_tool -change #{library} #{good_path} #{binary}"
    elsif File.exist? good_path_org
      system "sudo install_name_tool -change #{library} #{good_path_org} #{binary}"
    else
      puts "Could not find the library for #{lib} : #{library} (tried #{good_path})"
    end
  }
  
  libraries.each { |library|
    fix_libraries_paths(library) if library =~ %r{\A/usr/local/(?:lib|Cellar)/}
  } if recurse
end

recur = ARGV.delete('-r')
fix_libraries_paths(ARGV.first, recur)