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
|
#!/usr/bin/env vpython3
# Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
#
# Use of this source code is governed by a BSD-style license
# that can be found in the LICENSE file in the root of the source
# tree. An additional intellectual property rights grant can be found
# in the file PATENTS. All contributing project authors may
# be found in the AUTHORS file in the root of the source tree.
"""
This script builds a GN executable targeting the host machine.
It is useful, for example, for mobile devices performance testing where
it makes sense to build WebRTC for a mobile platform (e.g. Android) but
part of the test is performed on the host machine (e.g. running an
executable to analyze a video downloaded from a device).
The script has only one (mandatory) option: --executable_name, which is
the output name of the GN executable. For example, if you have the
following executable in your out folder:
out/Debug/random_exec
You will be able to compile the same executable targeting your host machine
by running:
$ vpython3 tools_webrtc/executable_host_build.py --executable_name random_exec
The generated executable will have the same name as the input executable with
suffix '_host'.
This script should not be used standalone but from GN, through an action:
action("random_exec_host") {
script = "//tools_webrtc/executable_host_build.py"
outputs = [
"${root_out_dir}/random_exec_host",
]
args = [
"--executable_name",
"random_exec",
]
}
The executable for the host machine will be generated in the GN out directory
(e.g. out/Debug in the previous example).
"""
from contextlib import contextmanager
import argparse
import os
import shutil
import subprocess
import sys
import tempfile
SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
SRC_DIR = os.path.normpath(os.path.join(SCRIPT_DIR, os.pardir))
sys.path.append(os.path.join(SRC_DIR, 'build'))
import find_depot_tools
def _ParseArgs():
desc = 'Generates a GN executable targeting the host machine.'
parser = argparse.ArgumentParser(description=desc)
parser.add_argument('--executable_name',
required=True,
help='Name of the executable to build')
args = parser.parse_args()
return args
@contextmanager
def HostBuildDir():
temp_dir = tempfile.mkdtemp()
try:
yield temp_dir
finally:
shutil.rmtree(temp_dir)
def _RunCommand(argv, cwd=SRC_DIR, **kwargs):
with open(os.devnull, 'w') as devnull:
subprocess.check_call(argv, cwd=cwd, stdout=devnull, **kwargs)
def DepotToolPath(*args):
return os.path.join(find_depot_tools.DEPOT_TOOLS_PATH, *args)
if __name__ == '__main__':
ARGS = _ParseArgs()
EXECUTABLE_TO_BUILD = ARGS.executable_name
EXECUTABLE_FINAL_NAME = ARGS.executable_name + '_host'
with HostBuildDir() as build_dir:
_RunCommand([sys.executable, DepotToolPath('gn.py'), 'gen', build_dir])
_RunCommand([DepotToolPath('ninja'), '-C', build_dir, EXECUTABLE_TO_BUILD])
shutil.copy(os.path.join(build_dir, EXECUTABLE_TO_BUILD),
EXECUTABLE_FINAL_NAME)
|
