Extract breakpad symbol files for Linux official builds.

build/linux/dump_app_syms

+#!/bin/sh

[Mark Mentovai, 2009/06/12 17:30:10]

svn:executable and svn:eol-style?

+
+# Copyright (c) 2009 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.
+#
+# Helper script to run dump_syms on Chrome Linux executables and "fixup" the
+# generated sigs (due to changes to the binary from stripping).
+
+set -e
+
+usage() {
+  echo "$0 <dump_syms_exe> <binary_with_symbols> <symbols_output>"
+}
+
+
+if [ $# -ne 3 ]; then
+  usage
+  exit 1
+fi
+
+SCRIPTDIR="$(readlink -f "$(dirname "$0")")"
+DUMPSYMS="$1"
+INFILE="$2"
+OUTFILE="$3"
+
+STRIPPED=$(mktemp -q -t stripped-XXXXX)
+if [ $? -ne 0 ]; then
+  echo "ERROR: Could not create temp stripped '$INFILE'"

[Mark Mentovai, 2009/06/12 17:30:10]

echo blah >& 2 (also for usage()?)

+  exit 1
+fi
+
+# Dump the symbols from the given binary.
+"$DUMPSYMS" "$INFILE" > "$OUTFILE"

[Mark Mentovai, 2009/06/12 17:30:10]

In the Mac version of this script, we have an -nt check to avoid wasting time
doing any work when outfile already exists and is newer than infile.

+
+# Strip the binary and calculate the signature of that, since that's what ships.
+strip "$INFILE" -o "$STRIPPED"
+NEWSIG=$("$SCRIPTDIR/dump_signature.py" "$STRIPPED")
+rm "$STRIPPED"
+
+# Replace the old signature with the stripped signature in the symbols file.
+INFILE_BASE=$(basename "$INFILE")
+sed -i "1s/[0-9A-F]* $INFILE_BASE/$NEWSIG $INFILE_BASE/" "$OUTFILE"

[Mark Mentovai, 2009/06/12 17:30:10]

This is slightly dangerous in the general case because INFILE_BASE has not
really been scrubbed for sanity.  This should be fine if the sed script is
simply "1s/^[0-9A-F]* /$NEWSIG /".

+

[Mark Mentovai, 2009/06/12 17:30:10]

nit: blank line at EOF doesn't contribute anything positive