osx: only strip x86_64 symbols

lib/motion/project/builder.rb

@@ -414,7 +414,7 @@ EOS
       # Strip all symbols. Only in distribution mode.
       if main_exec_created and config.distribution_mode
         App.info "Strip", main_exec
-        sh "#{config.locate_binary('strip')} \"#{main_exec}\""
+        sh "#{config.locate_binary('strip')} #{config.strip_args} \"#{main_exec}\""
       end
     end
 

lib/motion/project/config.rb

@@ -287,6 +287,10 @@ module Motion; module Project
       File.join(motiondir, 'data', template.to_s, target)
     end
 
+    def strip_args
+      ''
+    end
+
     def print_crash_message
       $stderr.puts ''
       $stderr.puts '=' * 80

lib/motion/project/template/osx/config.rb

@@ -116,6 +116,11 @@ module Motion; module Project;
       }.merge(generic_info_plist).merge(dt_info_plist).merge(info_plist))
     end
 
+    def strip_args
+      # We only strip x86_64 symbols, because attempting to strip i386 symbols results in a 'symbols referenced by indirect symbol table entries that can't be stripped' error.
+      '-arch x86_64'
+    end
+
     def supported_sdk_versions(versions)
       osx_version = `sw_vers -productVersion`.strip
       versions.reverse.find { |vers|