Re-land https://codereview.chromium.org/11642018/: Add a postbuild action for executables built wi…

build/mac/copy_asan_runtime_dylib.sh

Index: build/mac/copy_asan_runtime_dylib.sh
===================================================================
--- build/mac/copy_asan_runtime_dylib.sh	(revision 0)
+++ build/mac/copy_asan_runtime_dylib.sh	(revision 0)
@@ -0,0 +1,53 @@
+#!/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}"
Property changes on: build/mac/copy_asan_runtime_dylib.sh
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Added: svn:executable
   + *
Added: svn:eol-style
   + LF