Get open-vcdiff building on Linux and Mac (in SCons) using...

build/SConscript.main

 # Copyright (c) 2006-2008 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.
 
 import os
 import shutil
 import sys
 
 
 p = ARGUMENTS.get('PROGRESS')
@@ skipping 291 matching lines @@
   cpus = len([l for l in open('/proc/cpuinfo') if l.startswith('processor\t')])
   SetOption('num_jobs', cpus + 1)
 
   # For now, linux only loads the components we know work on Linux, by default.
   load = [
       'base',
       'breakpad',
       'chrome',
       'googleurl',
       'net',
+      'sdch',
       'skia',
       'testing',
       'third_party',
       'v8',
       'webkit',
   ]
 
   excluded_warnings = [
     # TODO: Clean up uses of ext/hash_map and remove this.
     # (see unordered_map and base/hash_tables.h)
@@ skipping 25 matching lines @@
   env.ParseConfig('pkg-config --cflags --libs nss')
 
 elif env['PLATFORM'] == 'darwin':
 
   # For now, mac only loads the components we know work on Mac, by default.
   load = [
       'base',
       #'breakpad',
       'googleurl',
       'net',
+      'sdch',
       'skia',
       'testing',
       'third_party',
       #'webkit',
   ]
 
   env.Replace(
       # Reproduce XCode's behavior of using gcc even to link C++,
       # and distinguishing it the -x c++ option.
       CC = 'gcc-4.2',
@@ skipping 192 matching lines @@
     initial_indent = ' '*32,
     subsequent_indent = ' '*32,
   )
   components = tw.fill(', '.join(components))
 
   Help(help_fmt % components)
 
 
 Import('build_component')
 Default(build_component)