1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
#!/usr/bin/env python
# Copyright (c) 2013 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.
"""Install Debian sysroots for building chromium.
"""
# The sysroot is needed to ensure that binaries that get built will run on
# the oldest stable version of Debian that we currently support.
# This script can be run manually but is more often run as part of gclient
# hooks. When run from hooks this script is a no-op on non-linux platforms.
# The sysroot image could be constructed from scratch based on the current state
# of the Debian archive but for consistency we use a pre-built root image (we
# don't want upstream changes to Debian to effect the chromium build until we
# choose to pull them in). The images will normally need to be rebuilt every
# time chrome's build dependencies are changed but should also be updated
# periodically to include upstream security fixes from Debian.
import hashlib
import json
import platform
import optparse
import os
import re
import shutil
import subprocess
import sys
import urllib2
SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
URL_PREFIX = 'https://commondatastorage.googleapis.com'
URL_PATH = 'chrome-linux-sysroot/toolchain'
VALID_ARCHS = ('arm', 'arm64', 'i386', 'amd64', 'mips', 'mips64el')
ARCH_TRANSLATIONS = {
'x64': 'amd64',
'x86': 'i386',
'mipsel': 'mips',
'mips64': 'mips64el',
}
DEFAULT_TARGET_PLATFORM = 'sid'
class Error(Exception):
pass
def GetSha1(filename):
sha1 = hashlib.sha1()
with open(filename, 'rb') as f:
while True:
# Read in 1mb chunks, so it doesn't all have to be loaded into memory.
chunk = f.read(1024*1024)
if not chunk:
break
sha1.update(chunk)
return sha1.hexdigest()
def main(args):
parser = optparse.OptionParser('usage: %prog [OPTIONS]', description=__doc__)
parser.add_option('--arch',
help='Sysroot architecture: %s' % ', '.join(VALID_ARCHS))
parser.add_option('--all', action='store_true',
help='Install all sysroot images (useful when updating the'
' images)')
parser.add_option('--print-hash',
help='Print the hash of the sysroot for the given arch.')
options, _ = parser.parse_args(args)
if not sys.platform.startswith('linux'):
return 0
if options.print_hash:
arch = options.print_hash
print GetSysrootDict(DEFAULT_TARGET_PLATFORM,
ARCH_TRANSLATIONS.get(arch, arch))['Sha1Sum']
return 0
if options.arch:
InstallSysroot(DEFAULT_TARGET_PLATFORM,
ARCH_TRANSLATIONS.get(options.arch, options.arch))
elif options.all:
for arch in VALID_ARCHS:
InstallSysroot(DEFAULT_TARGET_PLATFORM, arch)
else:
print 'You much specify one of the options.'
return 1
return 0
def GetSysrootDict(target_platform, target_arch):
if target_arch not in VALID_ARCHS:
raise Error('Unknown architecture: %s' % target_arch)
sysroots_file = os.path.join(SCRIPT_DIR, 'sysroots.json')
sysroots = json.load(open(sysroots_file))
sysroot_key = '%s_%s' % (target_platform, target_arch)
if sysroot_key not in sysroots:
raise Error('No sysroot for: %s %s' % (target_platform, target_arch))
return sysroots[sysroot_key]
def InstallSysroot(target_platform, target_arch):
sysroot_dict = GetSysrootDict(target_platform, target_arch)
tarball_filename = sysroot_dict['Tarball']
tarball_sha1sum = sysroot_dict['Sha1Sum']
# TODO(thestig) Consider putting this elsewhere to avoid having to recreate
# it on every build.
linux_dir = os.path.dirname(SCRIPT_DIR)
sysroot = os.path.join(linux_dir, sysroot_dict['SysrootDir'])
url = '%s/%s/%s/%s' % (URL_PREFIX, URL_PATH, tarball_sha1sum,
tarball_filename)
stamp = os.path.join(sysroot, '.stamp')
if os.path.exists(stamp):
with open(stamp) as s:
if s.read() == url:
return
print 'Installing Debian %s %s root image: %s' % \
(target_platform, target_arch, sysroot)
if os.path.isdir(sysroot):
shutil.rmtree(sysroot)
os.mkdir(sysroot)
tarball = os.path.join(sysroot, tarball_filename)
print 'Downloading %s' % url
sys.stdout.flush()
sys.stderr.flush()
for _ in range(3):
try:
response = urllib2.urlopen(url)
with open(tarball, "wb") as f:
f.write(response.read())
break
except:
pass
else:
raise Error('Failed to download %s' % url)
sha1sum = GetSha1(tarball)
if sha1sum != tarball_sha1sum:
raise Error('Tarball sha1sum is wrong.'
'Expected %s, actual: %s' % (tarball_sha1sum, sha1sum))
subprocess.check_call(['tar', 'xf', tarball, '-C', sysroot])
os.remove(tarball)
with open(stamp, 'w') as s:
s.write(url)
if __name__ == '__main__':
try:
sys.exit(main(sys.argv[1:]))
except Error as e:
sys.stderr.write(str(e) + '\n')
sys.exit(1)
|
