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 into the bundle and fixes the dylib's install
  10 # name in the binary to be relative to @executable_path.
  11
  12 set -e
  13
  14 BINARY="${BUILT_PRODUCTS_DIR}/${EXECUTABLE_PATH}"
  15
  16 if [[ ! -f "$BINARY" ]]; then
  17   # This is neither an .app bundle nor a standalone executable.
  18   # Most certainly the script has been called for a data bundle.
  19   exit 0
  20 fi
  21
  22 BINARY_DIR="$(dirname "${BINARY}")"
  23
  24 # Find the link to the ASan runtime encoded in the binary.
  25 BUILTIN_DYLIB_PATH=$(otool -L "${BINARY}" | \
  26     sed -Ene 's/^[[:blank:]]+(.*libclang_rt\.asan_.*_dynamic\.dylib).*$/\1/p')
  27
  28 if [[ "${BUILTIN_DYLIB_PATH}" == *asan_iossim_dynamic* ]]; then
  29   ASAN_DYLIB_NAME=libclang_rt.asan_iossim_dynamic.dylib
  30 elif [[ "${BUILTIN_DYLIB_PATH}" == *asan_osx_dynamic* ]]; then
  31   ASAN_DYLIB_NAME=libclang_rt.asan_osx_dynamic.dylib
  32 fi
  33
  34 if [[ -z "${BUILTIN_DYLIB_PATH}" ]]; then
  35   echo "${BINARY} does not depend on the ASan runtime library!" >&2
  36   exit 1
  37 fi
  38
  39 # TODO(glider): this doesn't work if we set CC and CXX to override the default
  40 # Clang.
  41 ASAN_DYLIB=$(find \
  42     "${BUILT_PRODUCTS_DIR}/../../third_party/llvm-build/Release+Asserts/lib/clang/" \
  43     -type f -path "*${ASAN_DYLIB_NAME}")
  44
  45 DYLIB_BASENAME=$(basename "${ASAN_DYLIB}")
  46 if [[ "${DYLIB_BASENAME}" != "${ASAN_DYLIB_NAME}" ]]; then
  47   echo "basename(${ASAN_DYLIB}) != ${ASAN_DYLIB_NAME}" >&2
  48   exit 1
  49 fi
  50
  51 # Check whether the directory containing the executable binary is named
  52 # "MacOS". In this case we're building a full-fledged OSX app and will put
  53 # the runtime into appname.app/Contents/Libraries/. Otherwise this is probably
  54 # an iOS gtest app, and the ASan runtime is put next to the executable.
  55 UPPER_DIR=$(dirname "${BINARY_DIR}")
  56 if [ "${UPPER_DIR}" == "MacOS" ]; then
  57   LIBRARIES_DIR="${UPPER_DIR}/Libraries"
  58   mkdir -p "${LIBRARIES_DIR}"
  59   NEW_LC_ID_DYLIB="@executable_path/../Libraries/${ASAN_DYLIB_NAME}"
  60 else
  61   LIBRARIES_DIR="${BINARY_DIR}"
  62   NEW_LC_ID_DYLIB="@executable_path/${ASAN_DYLIB_NAME}"
  63 fi
  64
  65 cp "${ASAN_DYLIB}" "${LIBRARIES_DIR}"
  66
  67 # Make LC_ID_DYLIB of the runtime copy point to its location.
  68 install_name_tool \
  69     -id "${NEW_LC_ID_DYLIB}" \
  70     "${LIBRARIES_DIR}/${ASAN_DYLIB_NAME}"
  71
  72 # Fix the rpath to the runtime library recorded in the binary.
  73 install_name_tool \
  74     -change "${BUILTIN_DYLIB_PATH}" \
  75     "${NEW_LC_ID_DYLIB}" \
  76     "${BINARY}"