honood · September 20, 2019 12:17 · Sep 22, 2017
diff --git a/staticlibobjcabichecker.rb b/staticlibobjcabichecker.rb
@@ -0,0 +1,47 @@
+#!/usr/bin/env ruby
+
+require 'optparse'
+require 'pathname'
+require 'open3'
+
+# This tool checks an input path for all static libraries *.a files 
+# and makes sure they were built with the most modern ObjC ABI version.
+
+# Parse command line options.
+options = {}
+OptionParser.new do |opts|
+	opts.banner = 'Usage: staticlibchecker.rb [options]'
+	opts.on('-i', '--input-path FOLDER', 'Input path') { |v| options[:input_path] = v }
+end.parse!
+
+input_path = ""
+if options[:input_path].nil?
+	raise "No input path specified"
+else 
+	input_path = options[:input_path]
+end
+
+all_static_libs = Dir["#{input_path}/**/*.a"]
+puts all_static_libs
+category_class_var_flag = 1<<6
+all_static_libs.each { |path|
+
+	# Run otool against the static lib
+	command = "otool -o #{path}"
+	stdout, stderr, status = Open3.capture3(command)
+	if !status.success?
+		puts "Failed with output: #{stderr}"
+		exit status.exitstatus
+	end
+
+	# extract 'flags' value
+	match = stdout.match /^\s+flags\s+(0x[\d]+)$/
+	if match 
+		flags = Integer(match[1])
+		if (flags & category_class_var_flag) == category_class_var_flag
+            puts "File: #{File.basename(path)} is ok"
+        else 
+			puts "File: #{File.basename(path)} was built with an old ABI version! #{flags} #{category_class_var_flag}"
+		end
+	end
+}