chromium-src-build/mac/copy_asan_runtime_dylib.sh

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#!/bin/bash
# Copyright (c) 2013 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.
# For app bundles built with ASan, copies the runtime lib
# (libclang_rt.asan_osx_dynamic.dylib), on which their executables depend, from
# the compiler installation path to appname.app/Contents/Resources and fixes the
# dylib's install name in the binary to be relative to @executable_path.
set -e
BINARY="${BUILT_PRODUCTS_DIR}/${EXECUTABLE_PATH}"
BINARY_DIR="$(dirname "${BINARY}")"
ASAN_DYLIB_NAME=libclang_rt.asan_osx_dynamic.dylib
ASAN_DYLIB=$(find \
"${BUILT_PRODUCTS_DIR}/../../third_party/llvm-build/Release+Asserts/lib/clang/" \
-type f -path "*${ASAN_DYLIB_NAME}")
# Find the link to the ASan runtime encoded in the binary.
BUILTIN_DYLIB_PATH=$(otool -L "${BINARY}" | \
sed -Ene 's/^[[:blank:]]+(.*libclang_rt\.asan_osx_dynamic\.dylib).*$/\1/p')
if [[ -z "${BUILTIN_DYLIB_PATH}" ]]; then
echo "${BINARY} does not depend on the ASan runtime library!" >&2
# TODO(glider): make this return 1 when we fully switch to the dynamic
# runtime in ASan.
exit 0
fi
DYLIB_BASENAME=$(basename "${ASAN_DYLIB}")
if [[ "${DYLIB_BASENAME}" != "${ASAN_DYLIB_NAME}" ]]; then
echo "basename(${ASAN_DYLIB}) != ${ASAN_DYLIB_NAME}" >&2
exit 1
fi
LIBRARIES_DIR="$(dirname "${BINARY_DIR}")/Libraries"
mkdir -p "${LIBRARIES_DIR}"
cp "${ASAN_DYLIB}" "${LIBRARIES_DIR}"
NEW_LC_ID_DYLIB="@executable_path/../Libraries/${ASAN_DYLIB_NAME}"
# Make LC_ID_DYLIB of the runtime copy point to its location.
install_name_tool \
-id "${NEW_LC_ID_DYLIB}" \
"${LIBRARIES_DIR}/${ASAN_DYLIB_NAME}"
# Fix the rpath to the runtime library recorded in the binary.
install_name_tool \
-change "${BUILTIN_DYLIB_PATH}" \
"${NEW_LC_ID_DYLIB}" \
"${BINARY}"