Replace gdb-add-index with cleanroom rewrite from vrk@

build/add-index.sh

-#!/bin/bash
-# Copyright (c) 2012 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.
-#
-# Saves the gdb index for a given binary and its shared library dependencies.
-
-set -e
-
-if [[ ! $# == 1 ]]; then
-  echo "Usage: $0 path-to-binary"
-  exit 1
-fi
-
-FILENAME="$1"
-if [[ ! -f "$FILENAME" ]]; then
-  echo "Path $FILENAME does not exist."
-  exit 1
-fi
-
-# We're good to go! Create temp directory for index files.
-DIRECTORY=$(mktemp -d)
-echo "Made temp directory $DIRECTORY."
-
-# Always remove directory on exit.
-trap "{ echo -n Removing temp directory $DIRECTORY...;
-  rm -rf $DIRECTORY; echo done; }" EXIT
-
-# Grab all the chromium shared library files.
-so_files=$(ldd "$FILENAME" 2>/dev/null \
-  | grep $(pwd) \
-  | sed "s/.*[ \t]\(.*\) (.*/\1/")
-
-# Add index to binary and the shared library dependencies.
-for file in "$FILENAME" $so_files; do
-  basename=$(basename "$file")
-  echo -n "Adding index to $basename..."
-  readelf_out=$(readelf -S "$file")
-  if [[ $readelf_out =~ "gdb_index" ]]; then
-    echo "already contains index. Skipped."
-  else
-    gdb -batch "$file" -ex "save gdb-index $DIRECTORY" -ex "quit"
-    objcopy --add-section .gdb_index="$DIRECTORY"/$basename.gdb-index \
-      --set-section-flags .gdb_index=readonly "$file" "$file"
-    echo "done."
-  fi
-done