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
|
#!/usr/bin/env python
# Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
# This file just executes its arguments, except that it allows overriding
# environment variables using command-line arguments.
import subprocess
import sys
import os
import re
args = []
env = os.environ.copy()
if sys.platform == 'win32':
# On Windows, when gn is setting up the build toolchain, it produces a set
# of environment variables that are required to invoke the right build
# toolchain. We need to load those environment variables here too in order
# for rustc to be able to successfully invoke the linker tool.
# The file is in 'windows environment block' format, which contains
# multiple 'key=value' pairs, separated by '\0' bytes, and terminated by
# two '\0' bytes at the end.
gn_env_pairs = open("environment.x64").read()[:-2].split('\0')
gn_env = dict([pair.split('=', 1) for pair in gn_env_pairs])
env.update(gn_env)
# This is for src/msg.rs to know where to find msg_generated.rs.
# When building with Cargo this variable is set by build.rs.
env["GN_OUT_DIR"] = os.path.abspath(".")
assert os.path.isdir(env["GN_OUT_DIR"])
# Environment variables can be specified on the command line using
# '--env=variable=value' flags. These flags are not passed through to rustc.
# This is useful to set env vars that are normally automatically set by Cargo,
# e.g. CARGO_PKG_NAME, CARGO_PKG_VERSION, OUT_DIR, etc.
for arg in sys.argv[1:]:
match = re.search('--env=([^=]+)=(.*)', arg)
if match:
key, value = match.groups()
if key == "OUT_DIR":
# OUT_DIR needs to contain an absolute path.
value = os.path.abspath(value)
env[key] = value
else:
args.append(arg)
sys.exit(subprocess.call(args, env=env))
|
