sections.rb

#!/usr/bin/ruby

raise "Usage: ./args.rb <path to executable>" unless ARGV.size == 1

new_seg_name = "__MY_TEXT"

binary = ARGV.first

sect_regex = /\s*Section (\S+)/
sects = `xcrun size -x -l -m #{binary}`.split("\n").drop_while do |line|
  !line.start_with?("Segment __TEXT:")
end.drop(1).take_while do |line|
  line =~ sect_regex
end.map do |line|
  line.match(/^\s*Section (\S+):/)[1]
end

cmds = sects.map do |sect|
  "-Wl,-rename_section,__TEXT,#{sect},#{new_seg_name},#{sect}"
end

puts "Sections:\n#{sects}\n\nLink commands:\n#{cmds.join("\n")}\n\nProtection link command:\n-Wl,-segprot,#{new_seg_name},rx,rx\n"