First pass at content shell for the Mac. Doesn't work yet.

chrome/tools/build/mac/verify_no_objc.sh

-#!/bin/bash
-
-# Copyright (c) 2011 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# This script makes sure that no __OBJC,__image_info section appears in the
-# executable file built by the Xcode target that runs the script. If such a
-# section appears, the script prints an error message and exits nonzero.
-#
-# Why is this important?
-#
-# On 10.5, there's a bug in CFBundlePreflightExecutable that causes it to
-# crash when operating in an executable that has not loaded at its default
-# address (that is, when it's a position-independent executable with the
-# MH_PIE bit set in its mach_header) and the executable has an
-# __OBJC,__image_info section. See http://crbug.com/88697.
-#
-# Chrome's main executables don't use any Objective-C at all, and don't need
-# to carry this section around. Not linking them as Objective-C when they
-# don't need it anyway saves about 4kB in the linked executable, although most
-# of that 4kB is just filled with zeroes.
-#
-# This script makes sure that nobody goofs and accidentally introduces these
-# sections into the main executables.
-
-set -eu
-
-otool="${DEVELOPER_BIN_DIR:-/usr/bin}/otool"
-executable="${BUILT_PRODUCTS_DIR}/${EXECUTABLE_PATH}"
-
-if "${otool}" -arch i386 -o "${executable}" | grep -q '^Contents.*section$'; \
-then
-  echo "${0}: ${executable} has an __OBJC,__image_info section" 2>&1
-  exit 1
-fi
-
-if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
-  echo "${0}: otool failed" 2>&1
-  exit 1
-fi
-
-exit 0