离线编译chromium 59.0.3071.104，方法适合任意版本

离线编译任意版本chromium

没错， **离线 **且 **任意版本 ** chromium。离线还是要下载必要的代码的，但是可以分步进行，极大的提高编译成功率。

准备

chromium在墙内的git地址可以直接访问 https://github.com/chromium/chromium，
但是稳定的tag限于73以后，73以前的tag代码可以从 https://chromium.googlesource.com/chromium/src/+refs 下载指定的版本。

1. 我以59.0.3071.104为例，下载好tar包：chromium-59.0.3071.104.tar.xz，大小500多M，直接下载很稳定，或者直接下载 源码离线包

2. 下载最新depot_tools 见 http://commondatastorage.googleapis.com/chrome-infra-docs/flat/depot_tools/docs/html/depot_tools_tutorial.html#_setting_up

3. 安装vs2015社区版，注意必须是update3，设置好INCLUDE环境变量：

C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include;C:\Program Files (x86)\Windows Kits\10\Include\10.0.14393.0\um;C:\Program Files (x86)\Windows Kits\10\Include\10.0.14393.0\winrt;C:\Program 

Files (x86)\Windows Kits\10\Include\10.0.14393.0\shared;C:\Program Files (x86)\Windows Kits\10\Include\10.0.14393.0\ucrt;C:\Program Files (x86)\Windows Kits\10\Include\10.0.14393.0
C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include;C:\Program Files (x86)\Windows Kits\10\Include\10.0.14393.0\um;C:\Program Files (x86)\Windows Kits\10\Include\10.0.14393.0\winrt;C:\Program 

Files (x86)\Windows Kits\10\Include\10.0.14393.0\shared;C:\Program Files (x86)\Windows Kits\10\Include\10.0.14393.0\ucrt

安装了别的版本vs的，建议完全卸载掉再安装此版本，否则后再编译链接的时候报错，甚至运行的时候出现异常。

4. cmd设置环境：

set GYP_GENERATORS=msvs-ninja,ninjaset GYP_GENERATORS=msvs-ninja,ninja
set GYP_DEFINES=component=shared_library
set GYP_MSVS_VERSION=2015
set DEPOT_TOOLS_WIN_TOOLCHAIN=0
set GYP_DEFINES=windows_sdk_path="C:\Program Files (x86)\Windows Kits\10" component=shared_library disable_nacl=1 enable_automation=0 enable_captive_portal_detection=0 enable_google_now=0 enable_hidpi=0 

fastbuild=0 ffmpeg_branding=Chrome incremental_chrome_dll=0 proprietary_codecs=1 remoting=0

5. 设置代理， 查看浏览器的代理设置，将其配置到cmd/git环境：

git config --global http.proxy http://127.0.0.1:1080
git config --global https.proxy https://127.0.0.1:1080
set HTTP_PROXY=http://127.0.0.1:1080
set HTTPS_PROXY=https://127.0.0.1:1080
netsh winhttp set proxy 127.0.0.1:1080
set NO_AUTH_BOTO_CONFIG=E:\tmp\chromium59\src\.boto
set BOTO_CONFIG=E:\tmp\chromium59\src\.boto

6. 目录初始化 ， 新建编译目录 例如：E:\tmp\chromium59， 把chromium-59.0.3071.104.tar.xz解压到该目录里作为src文件夹，再新建.gclient文件初始化项目(.gclient与src同级)：
   echo "" >.gclient， 修改.gclient文件内容：

{
  "url": "https://github.com/chromium/chromium.git",
  "managed": False,
  "name": "src",
  "deps_file": ".DEPS.git",
  "custom_deps": {},
  "safesync_url": "", 
},
]

7. 安装python2.7.9，这个版本才开始有pip支持，2.7.6没有，否则后面又是提示你安装。cmd中直接运行python和pip能成功
8. 安装wget的windows版本，推荐把curl和gnuwin32 也安装了，过程不详述，cmd中直接运行wget和curl能成功。
   验证步骤5代理是否成功： curl https://www.google.com 是否正确返回页面

修改

1. google的下载不能很好的在代理环境下工作（我尝试过NO_AUTH_BOTO_CONFIG 好像也不行），可以借助wget工具下载。
   手动测试wget是否能下载成功 https://storage.googleapis.com/syzygy-archive/builds/official/b8aa6a6d09dadd385a1afed5e71c3bb3514a4c0f/benchmark.zip
   是否成功来检查环境是否安装正确。
   再修改depot_tools下的download_from_google_storage.py文件 download_from_google_storage.py（已修改）下载

#增加一个方法，采用wget方式下载，注意cmd中的环境变量
#set HTTP_PROXY=http://127.0.0.1:1080
#set HTTPS_PROXY=https://127.0.0.1:1080

def download_url2(src, target):
  cmd = "wget  --tries=3 --timeout=60 --connect-timeout=30 --no-check-certificate --force-directories " +  src  + "  --output-document=" + target
  print "cmd:" + cmd
  os.system(cmd)

把原来的下载流程注释掉，并用该方法：

 download_url2(file_url, output_filename) 
  
  #code, _, err = gsutil.check_call('cp', file_url, output_filename) 
  #if code != 0:
  #  out_q.put('%d> %s' % (thread_num, err))
  #  ret_codes.put((code, err))
  #  continue 

把原来的文件检查流程也注释掉：

    # Check if file exists.
    file_url = '%s/%s' % (base_url, input_sha1_sum)
    print 'Check if file exists. file_url:' + file_url
    #(code, _, err) = gsutil.check_call('ls', file_url)
    #if code != 0:
    #  if code == 404:
    #    out_q.put('%d> File %s for %s does not exist, skipping.' % (
    #        thread_num, file_url, output_filename))
    #    ret_codes.put((1, 'File %s for %s does not exist.' % (
    #        file_url, output_filename)))
    #  else:
    #    # Other error, probably auth related (bad ~/.boto, etc).
    #    out_q.put('%d> Failed to fetch file %s for %s, skipping. [Err: %s]' % (
    #        thread_num, file_url, output_filename, err))
    #    ret_codes.put((1, 'Failed to fetch file %s for %s. [Err: %s]' % (
    #        file_url, output_filename, err)))
    #  continue

再把gn://协议下载改成https://下载，具体参考我修改后的 download_from_google_storage.py 文件

2. 修改 src/build/get_syzygy_binaries.py 文件：方法同上，增加download_url2方法，替换原来的
   get_syzygy_binaries.py （已修改）下载

运行&编译

1. gclient runhooks
2. 生成ninja 编译文件：

cd src  
gn gen --ide=vs --filters=//chrome --args="enable_nacl=false" --no-deps out\Default

3. 正式编译

    ninja -C out\Default chrome

可能出现的问题及解决

1. 在gclient runhooks这一步，如果报类似这样的错：

Error: Command 'download_from_google_storage --no_resume --no_auth -u --bucket v8-wasm-fuzzer -s src/v8/test/fuzzer/wasm.tar.gz.sha1' returned non-zero exit status 1 in E:\tmp\chromium59

sha1文件找不到，直接在DEPS文件中搜索对应的，将其对应项去掉

{
    'action': [
      'download_from_google_storage',
      '--no_resume',
      '--no_auth',
      '-u',
      '--bucket',
      'v8-wasm-fuzzer',
      '-s',
      'src/v8/test/fuzzer/wasm.tar.gz.sha1'
    ],
    'pattern':
      '.',
    'name':
      'wasm_fuzzer'
  },

2. 缺失.git目录导致的问题及解决：

Running hooks:  83% (46/55) apache_win32
________ running 'download_from_google_storage --no_resume --platform=win32 --directory --recursive --no_auth --num_threads=16 --bucket chromium-apache-win32 src/third_party/apache-win32' 
in 'E:\tmp\chromium59'options.boto:nul
NOTICE: You have PROXY values set in your environment, but gsutil in depot_tools does not (yet) obey them.
Also, --no_auth prevents the normal BOTO_CONFIG environment variable from being used.
To use a proxy in this situation, please supply those settings in a .boto file pointed to by the NO_AUTH_BOTO_CONFIG environment var.
Running hooks:  89% (49/55) clang_format_merge_driver
________ running 'D:\Python27\python.exe src/tools/clang_format_merge_driver/install_git_hook.py' in 'E:\tmp\chromium59'
fatal: not in a git directory
Installing clang-format merge driver into .git/config...
Traceback (most recent call last):
  File "src/tools/clang_format_merge_driver/install_git_hook.py", line 56, in 
  File "src/tools/clang_format_merge_driver/install_git_hook.py", line 45, in main
  File "D:\Python27\lib\subprocess.py", line 540, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['git.bat', 'config', 'merge.clang-format.name', 'clang-format merge driver']' returned non-zero exit status 128
Error: Command 'D:\\Python27\\python.exe src/tools/clang_format_merge_driver/install_git_hook.py' returned non-zero exit status 1 in E:\tmp\chromium59

因为没有.git目录，在gclient runhooks过程中会提示如上错误，修复也简单：
修改install_git_hook.py加上’–global’选项 ：

  subprocess.check_call(
      BuildGitCmd('config', '--global', 'merge.clang-format.name',
                  'clang-format merge driver'))
  subprocess.check_call(
      BuildGitCmd('config', '--global',  'merge.clang-format.driver',
                  'clang_format_merge_driver %O %A %B %P'))
  subprocess.check_call(
      BuildGitCmd('config', '--global',  'merge.clang-format.recursive', 'binary'))
  subprocess.check_call(
      BuildGitCmd('config', '--global',  'merge.clang-format.version', str(_VERSION)))