Since we're only using it on Linux now, just require poppler as a system dependency.

third_party/fontconfig/process-template.py

-#!/usr/bin/python
-
-# Copyright 2014 Google Inc.
-#
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# A simple template processing script.
-
-import optparse
-import os
-import sys
-
-parser = optparse.OptionParser()
-parser.add_option('-i', '--input')
-parser.add_option('-o', '--output')
-parser.add_option(
-    '-k', '--keyword_substitution',  action='append', nargs=2,
-     metavar=('KEY', 'VALUE'), help='Changes KEY to VALUE in the template.')
-parser.add_option(
-    '-p', '--path_substitution', action='append', nargs=2,
-    metavar=('KEY', 'PATH'),
-    help='Makes PATH absolute then changes KEY to PATH in the template.')
-
-(args, _) = parser.parse_args()
-
-input = sys.stdin
-if args.input:
-  input = open(args.input, 'r')
-
-output = sys.stdout
-if args.output:
-  output = open(args.output, 'w')
-
-path_subs = None
-if args.path_substitution:
-  path_subs = [
-      [sub[0], os.path.abspath(sub[1])] for sub in args.path_substitution
-  ]
-
-for line in input:
-  if args.keyword_substitution:
-    for (key, value) in args.keyword_substitution:
-      line = line.replace(key, value)
-  if path_subs:
-    for (key, path) in path_subs:
-      line = line.replace(key, path)
-  output.write(line)
-
-input.close()
-output.close()