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#!/usr/bin/env python3
# Copyright 2023 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.
"""This script is a wrapper around the siso binary that is pulled to
third_party as part of gclient sync. It will automatically find the siso
binary when run inside a gclient source tree, so users can just type
"siso" on the command line."""
import os
import signal
import shutil
import subprocess
import sys
import gclient_paths
def checkOutdir(args):
subcmd = ''
out_dir = "."
for i, arg in enumerate(args):
if not arg.startswith("-") and not subcmd:
subcmd = arg
continue
if arg == "-C":
out_dir = args[i + 1]
elif arg.startswith("-C"):
out_dir = arg[2:]
if subcmd != "ninja":
return
ninja_marker = os.path.join(out_dir, ".ninja_deps")
if os.path.exists(ninja_marker):
print("depot_tools/siso.py: %s contains Ninja state file.\n"
"Use `autoninja` to use reclient,\n"
"or run `gn clean %s` to switch from ninja to siso\n" %
(out_dir, out_dir),
file=sys.stderr)
sys.exit(1)
def _is_google_corp_machine():
"""This assumes that corp machine has gcert binary in known location."""
return shutil.which("gcert") is not None
def main(args):
# Do not raise KeyboardInterrupt on SIGINT so as to give siso time to run
# cleanup tasks. Siso will be terminated immediately after the second
# Ctrl-C.
original_sigint_handler = signal.getsignal(signal.SIGINT)
def _ignore(signum, frame):
try:
# Call the original signal handler.
original_sigint_handler(signum, frame)
except KeyboardInterrupt:
# Do not reraise KeyboardInterrupt so as to not kill siso too early.
pass
signal.signal(signal.SIGINT, _ignore)
if not sys.platform.startswith('win'):
signal.signal(signal.SIGTERM, lambda signum, frame: None)
# On Windows the siso.bat script passes along the arguments enclosed in
# double quotes. This prevents multiple levels of parsing of the special '^'
# characters needed when compiling a single file. When this case is
# detected, we need to split the argument. This means that arguments
# containing actual spaces are not supported by siso.bat, but that is not a
# real limitation.
if sys.platform.startswith('win') and len(args) == 2:
args = args[:1] + args[1].split()
# macOS's python sets CPATH, LIBRARY_PATH, SDKROOT implicitly.
# https://openradar.appspot.com/radar?id=5608755232243712
#
# Removing those environment variables to avoid affecting clang's behaviors.
if sys.platform == 'darwin':
os.environ.pop("CPATH", None)
os.environ.pop("LIBRARY_PATH", None)
os.environ.pop("SDKROOT", None)
# if user doesn't set PYTHONPYCACHEPREFIX and PYTHONDONTWRITEBYTECODE
# set PYTHONDONTWRITEBYTECODE=1 not to create many *.pyc in workspace
# and keep workspace clean.
if not os.environ.get("PYTHONPYCACHEPREFIX"):
os.environ.setdefault("PYTHONDONTWRITEBYTECODE", "1")
environ = os.environ.copy()
# Get gclient root + src.
primary_solution_path = gclient_paths.GetPrimarySolutionPath()
gclient_root_path = gclient_paths.FindGclientRoot(os.getcwd())
gclient_src_root_path = None
if gclient_root_path:
gclient_src_root_path = os.path.join(gclient_root_path, 'src')
siso_override_path = os.environ.get('SISO_PATH')
if siso_override_path:
print('depot_tools/siso.py: Using Siso binary from SISO_PATH: %s.' %
siso_override_path,
file=sys.stderr)
if not os.path.isfile(siso_override_path):
print(
'depot_tools/siso.py: Could not find Siso at provided '
'SISO_PATH.',
file=sys.stderr)
return 1
for base_path in set(
[primary_solution_path, gclient_root_path, gclient_src_root_path]):
if not base_path:
continue
env = environ.copy()
sisoenv_path = os.path.join(base_path, 'build', 'config', 'siso',
'.sisoenv')
if not os.path.exists(sisoenv_path):
continue
with open(sisoenv_path) as f:
for line in f.readlines():
k, v = line.rstrip().split('=', 1)
env[k] = v
backend_config_dir = os.path.join(base_path, 'build', 'config', 'siso',
'backend_config')
if os.path.exists(backend_config_dir) and not os.path.exists(
os.path.join(backend_config_dir, 'backend.star')):
if _is_google_corp_machine():
print(
'build/config/siso/backend_config/backend.star does not '
'exist.\n'
'backend.star is configured by gclient hook '
'build/config/siso/configure_siso.py.\n'
'Make sure `rbe_instance` gclient custom vars is correct.\n'
'Did you run `gclient runhooks` ?',
file=sys.stderr)
else:
print(
'build/config/siso/backend_config/backend.star does not '
'exist.\n'
'See build/config/siso/backend_config/README.md',
file=sys.stderr)
return 1
siso_paths = [
siso_override_path,
os.path.join(base_path, 'third_party', 'siso', 'cipd',
'siso' + gclient_paths.GetExeSuffix()),
os.path.join(base_path, 'third_party', 'siso',
'siso' + gclient_paths.GetExeSuffix()),
]
for siso_path in siso_paths:
if siso_path and os.path.isfile(siso_path):
checkOutdir(args[1:])
return subprocess.call([siso_path] + args[1:], env=env)
print(
'depot_tools/siso.py: Could not find siso in third_party/siso '
'of the current project. Did you run gclient sync?',
file=sys.stderr)
return 1
if siso_override_path:
return subprocess.call([siso_override_path] + args[1:])
print(
'depot_tools/siso.py: Could not find .sisoenv under build/config/siso '
'of the current project. Did you run gclient sync?',
file=sys.stderr)
return 1
if __name__ == '__main__':
sys.exit(main(sys.argv))
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