1 files changed, 79 insertions, 0 deletions
diff --git a/Source/WebCore/WebCore.gyp/mac/check_objc_rename.sh b/Source/WebCore/WebCore.gyp/mac/check_objc_rename.sh
new file mode 100755
index 0000000..ed3c119
--- /dev/null
+++ b/Source/WebCore/WebCore.gyp/mac/check_objc_rename.sh
@@ -0,0 +1,79 @@
+#!/bin/bash
+
+#
+# Copyright (C) 2011 Google Inc. All rights reserved.
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+# 
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+# This script checks a WebCore static library for potential Objective-C
+# class name collisions with the system's copy of the WebCore framework.
+# See the postbuild action that calls it from ../WebCore.gyp for details.
+
+set -e
+set -o pipefail
+
+if [[ $# -ne 2 ]]; then
+  echo "usage: ${0} class_whitelist_pattern category_whitelist_pattern" >& 2
+  exit 1
+fi
+
+lib="${BUILT_PRODUCTS_DIR}/${FULL_PRODUCT_NAME}"
+nm_pattern='[atsATS] ([+-]\[|\.objc_class_name_)'
+
+class_whitelist_pattern="${1}"
+category_whitelist_pattern="${2}"
+
+# Send nm's stderr in the pipeline to /dev/null to avoid spewing
+# "nm: no name list" messages. This means that if the pipelined nm fails, there
+# won't be any output, so if the entire assignment fails, run nm again to get
+# some output.
+violators=$(nm -p "${lib}" 2> /dev/null | \
+    (grep -E "${nm_pattern}" || true) | \
+    (grep -Ev "${nm_pattern}(${class_whitelist_pattern})" || true) | \
+    (grep -Ev "\((${category_whitelist_pattern})\)" || true)) || nm -p "${lib}"
+
+if [[ -z "${violators}" ]]; then
+  # An empty list means that everything's clean.
+  exit 0
+fi
+
+cat << __EOF__ >&2
+These Objective-C symbols may clash with those provided by the system's own
+WebCore framework:
+${violators}
+
+These symbols were found in:
+${lib}
+
+This should be corrected by adding the appropriate definitions to
+$(dirname ${0})/../WebCore.gyp
+or by updating the whitelist in
+${0}
+__EOF__
+
+exit 1