diff -r 000000000000 -r 6474c204b198 xpcom/analysis/fix-srcrefs.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/analysis/fix-srcrefs.py	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+"""
+Fix references to source files of the form [LOCpath]
+so that they are relative to a given source directory.
+
+Substitute the DOT-generated image map into the document.
+"""
+
+import os, sys, re
+
+(srcdir, ) = sys.argv[1:]
+srcdir = os.path.realpath(srcdir)
+
+f = re.compile(r'\[LOC(.*?)\]')
+
+def replacer(m):
+    file = m.group(1)
+    file = os.path.realpath(file)
+    if not file.startswith(srcdir):
+        raise Exception("File %s doesn't start with %s" % (file, srcdir))
+
+    file = file[len(srcdir) + 1:]
+    return file
+
+s = re.compile(r'\[MAP(.*?)\]')
+
+def mapreplace(m):
+    file = m.group(1)
+    c = open(file).read()
+    return c
+
+for line in sys.stdin:
+    line = f.sub(replacer, line)
+    line = s.sub(mapreplace, line)
+
+    sys.stdout.write(line)