Make gdb-add-index better respect relative paths and bind mounts

build/gdb-add-index

 #!/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 [[ ! $# == 1 ]]; then
@@ skipping 10 matching lines @@
 # We're good to go! Create temp directory for index files.
 DIRECTORY=$(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) \
+  | grep $(dirname "$FILENAME") \
   | 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