build/mac/copy_asan_runtime_dylib.sh

   1 #!/bin/bash
   2
   3 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 # For app bundles built with ASan, copies the runtime lib
   8 # (libclang_rt.asan_osx_dynamic.dylib), on which their executables depend, from
   9 # the compiler installation path to appname.app/Contents/Resources and fixes the
  10 # dylib's install name in the binary to be relative to @executable_path.
  11
  12 set -e
  13
  14 BINARY="${BUILT_PRODUCTS_DIR}/${EXECUTABLE_PATH}"
  15 BINARY_DIR="$(dirname "${BINARY}")"
  16 ASAN_DYLIB_NAME=libclang_rt.asan_osx_dynamic.dylib
  17 ASAN_DYLIB=$(find \
  18     "${BUILT_PRODUCTS_DIR}/../../third_party/llvm-build/Release+Asserts/lib/clang/" \
  19     -type f -path "*${ASAN_DYLIB_NAME}")
  20
  21 # Find the link to the ASan runtime encoded in the binary.
  22 BUILTIN_DYLIB_PATH=$(otool -L "${BINARY}" | \
  23     sed -Ene 's/^[[:blank:]]+(.*libclang_rt\.asan_osx_dynamic\.dylib).*$/\1/p')
  24
  25 if [[ -z "${BUILTIN_DYLIB_PATH}" ]]; then
  26   echo "${BINARY} does not depend on the ASan runtime library!" >&2
  27   # TODO(glider): make this return 1 when we fully switch to the dynamic
  28   # runtime in ASan.
  29   exit 0
  30 fi
  31
  32 DYLIB_BASENAME=$(basename "${ASAN_DYLIB}")
  33 if [[ "${DYLIB_BASENAME}" != "${ASAN_DYLIB_NAME}" ]]; then
  34   echo "basename(${ASAN_DYLIB}) != ${ASAN_DYLIB_NAME}" >&2
  35   exit 1
  36 fi
  37
  38 LIBRARIES_DIR="$(dirname "${BINARY_DIR}")/Libraries"
  39 mkdir -p "${LIBRARIES_DIR}"
  40 cp "${ASAN_DYLIB}" "${LIBRARIES_DIR}"
  41
  42 NEW_LC_ID_DYLIB="@executable_path/../Libraries/${ASAN_DYLIB_NAME}"
  43
  44 # Make LC_ID_DYLIB of the runtime copy point to its location.
  45 install_name_tool \
  46     -id "${NEW_LC_ID_DYLIB}" \
  47     "${LIBRARIES_DIR}/${ASAN_DYLIB_NAME}"
  48
  49 # Fix the rpath to the runtime library recorded in the binary.
  50 install_name_tool \
  51     -change "${BUILTIN_DYLIB_PATH}" \
  52     "${NEW_LC_ID_DYLIB}" \
  53     "${BINARY}"