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1#!/usr/bin/env python3
2# Copyright 2017 the V8 project authors. All rights reserved.
3# Use of this source code is governed by a BSD-style license that can be
4# found in the LICENSE file.
5
6"""
7Use this script to fetch all dependencies for V8 to run build_gn.py.
8
9Usage: fetch_deps.py <v8-path>
10"""
11
12# for py2/py3 compatibility
13from __future__ import print_function
14
15import os
16import subprocess
17import sys
18
19import node_common
20
21GCLIENT_SOLUTION = [
22  { "name"        : "v8",
23    "url"         : "https://chromium.googlesource.com/v8/v8.git",
24    "deps_file"   : "DEPS",
25    "managed"     : False,
26    "custom_deps" : {
27      # These deps are already part of Node.js.
28      "v8/base/trace_event/common"            : None,
29      # These deps are unnecessary for building.
30      "v8/test/benchmarks/data"               : None,
31      "v8/testing/gmock"                      : None,
32      "v8/test/mozilla/data"                  : None,
33      "v8/test/test262/data"                  : None,
34      "v8/test/test262/harness"               : None,
35      "v8/third_party/android_ndk"            : None,
36      "v8/third_party/android_sdk"            : None,
37      "v8/third_party/catapult"               : None,
38      "v8/third_party/colorama/src"           : None,
39      "v8/third_party/fuchsia-sdk"            : None,
40      "v8/third_party/instrumented_libraries" : None,
41      "v8/tools/luci-go"                      : None,
42      "v8/tools/swarming_client"              : None,
43      "v8/third_party/qemu-linux-x64"         : None,
44    },
45  },
46]
47
48def EnsureGit(v8_path):
49  def git(args):
50    # shell=True needed on Windows to resolve git.bat.
51    return subprocess.check_output(
52        "git " + args, cwd=v8_path, shell=True).strip()
53
54  expected_git_dir = os.path.join(v8_path, ".git")
55  actual_git_dir = git("rev-parse --absolute-git-dir")
56  if expected_git_dir == actual_git_dir:
57    print("V8 is tracked stand-alone by git.")
58    return False
59  print("Initializing temporary git repository in v8.")
60  git("init")
61  git("config user.name \"Ada Lovelace\"")
62  git("config user.email ada@lovela.ce")
63  git("commit --allow-empty -m init")
64  return True
65
66def FetchDeps(v8_path):
67  # Verify path.
68  v8_path = os.path.abspath(v8_path)
69  assert os.path.isdir(v8_path)
70
71  # Check out depot_tools if necessary.
72  depot_tools = node_common.EnsureDepotTools(v8_path, True)
73
74  temporary_git = EnsureGit(v8_path)
75  try:
76    print("Fetching dependencies.")
77    env = os.environ.copy()
78    # gclient needs to have depot_tools in the PATH.
79    env["PATH"] = depot_tools + os.pathsep + env["PATH"]
80    gclient = os.path.join(depot_tools, "gclient.py")
81    spec = "solutions = %s" % GCLIENT_SOLUTION
82    subprocess.check_call([sys.executable, gclient, "sync", "--spec", spec],
83                           cwd=os.path.join(v8_path, os.path.pardir),
84                           env=env)
85  except:
86    raise
87  finally:
88    if temporary_git:
89      node_common.UninitGit(v8_path)
90    # Clean up .gclient_entries file.
91    gclient_entries = os.path.normpath(
92        os.path.join(v8_path, os.pardir, ".gclient_entries"))
93    if os.path.isfile(gclient_entries):
94      os.remove(gclient_entries)
95
96  return depot_tools
97
98
99if __name__ == "__main__":
100  FetchDeps(sys.argv[1])
101