1#!/bin/bash 2 3# 4# Copyright (C) 2011 Google Inc. All rights reserved. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions are 8# met: 9# 10# * Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# * Redistributions in binary form must reproduce the above 13# copyright notice, this list of conditions and the following disclaimer 14# in the documentation and/or other materials provided with the 15# distribution. 16# * Neither the name of Google Inc. nor the names of its 17# contributors may be used to endorse or promote products derived from 18# this software without specific prior written permission. 19# 20# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 23# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31# 32 33# This script checks a WebCore static library for potential Objective-C 34# class name collisions with the system's copy of the WebCore framework. 35# See the postbuild action that calls it from ../WebCore.gyp for details. 36 37set -e 38set -o pipefail 39 40if [[ $# -ne 2 ]]; then 41 echo "usage: ${0} class_whitelist_pattern category_whitelist_pattern" >& 2 42 exit 1 43fi 44 45lib="${BUILT_PRODUCTS_DIR}/${FULL_PRODUCT_NAME}" 46nm_pattern='[atsATS] ([+-]\[|\.objc_class_name_)' 47 48class_whitelist_pattern="${1}" 49category_whitelist_pattern="${2}" 50 51# Send nm's stderr in the pipeline to /dev/null to avoid spewing 52# "nm: no name list" messages. This means that if the pipelined nm fails, there 53# won't be any output, so if the entire assignment fails, run nm again to get 54# some output. 55violators=$(nm -p "${lib}" 2> /dev/null | \ 56 (grep -E "${nm_pattern}" || true) | \ 57 (grep -Ev "${nm_pattern}(${class_whitelist_pattern})" || true) | \ 58 (grep -Ev "\((${category_whitelist_pattern})\)" || true)) || nm -p "${lib}" 59 60if [[ -z "${violators}" ]]; then 61 # An empty list means that everything's clean. 62 exit 0 63fi 64 65cat << __EOF__ >&2 66These Objective-C symbols may clash with those provided by the system's own 67WebCore framework: 68${violators} 69 70These symbols were found in: 71${lib} 72 73This should be corrected by adding the appropriate definitions to 74$(dirname ${0})/../WebCore.gyp 75or by updating the whitelist in 76${0} 77__EOF__ 78 79exit 1 80