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27b0f18275
Fully removes the `bits` option and adapts the code that relied on it. Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>
114 lines
3.7 KiB
Python
114 lines
3.7 KiB
Python
import os
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import sys
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import json
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import platform
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import uuid
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import functools
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import subprocess
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# NOTE: The multiprocessing module is not compatible with SCons due to conflict on cPickle
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JSON_SERIALIZABLE_TYPES = (bool, int, float, str)
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def run_in_subprocess(builder_function):
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@functools.wraps(builder_function)
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def wrapper(target, source, env):
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# Convert SCons Node instances to absolute paths
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target = [node.srcnode().abspath for node in target]
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source = [node.srcnode().abspath for node in source]
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# Short circuit on non-Windows platforms, no need to run in subprocess
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if sys.platform not in ("win32", "cygwin"):
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return builder_function(target, source, env)
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# Identify module
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module_name = builder_function.__module__
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function_name = builder_function.__name__
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module_path = sys.modules[module_name].__file__
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if module_path.endswith(".pyc") or module_path.endswith(".pyo"):
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module_path = module_path[:-1]
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# Subprocess environment
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subprocess_env = os.environ.copy()
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subprocess_env["PYTHONPATH"] = os.pathsep.join([os.getcwd()] + sys.path)
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# Keep only JSON serializable environment items
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filtered_env = dict((key, value) for key, value in env.items() if isinstance(value, JSON_SERIALIZABLE_TYPES))
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# Save parameters
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args = (target, source, filtered_env)
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data = dict(fn=function_name, args=args)
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json_path = os.path.join(os.environ["TMP"], uuid.uuid4().hex + ".json")
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with open(json_path, "wt") as json_file:
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json.dump(data, json_file, indent=2)
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json_file_size = os.stat(json_path).st_size
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if env["verbose"]:
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print(
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"Executing builder function in subprocess: "
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"module_path=%r, parameter_file=%r, parameter_file_size=%r, target=%r, source=%r"
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% (module_path, json_path, json_file_size, target, source)
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)
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try:
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exit_code = subprocess.call([sys.executable, module_path, json_path], env=subprocess_env)
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finally:
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try:
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os.remove(json_path)
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except OSError as e:
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# Do not fail the entire build if it cannot delete a temporary file
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print(
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"WARNING: Could not delete temporary file: path=%r; [%s] %s" % (json_path, e.__class__.__name__, e)
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)
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# Must succeed
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if exit_code:
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raise RuntimeError(
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"Failed to run builder function in subprocess: module_path=%r; data=%r" % (module_path, data)
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)
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return wrapper
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def subprocess_main(namespace):
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with open(sys.argv[1]) as json_file:
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data = json.load(json_file)
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fn = namespace[data["fn"]]
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fn(*data["args"])
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# CPU architecture options.
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architectures = ["x86_32", "x86_64", "arm32", "arm64", "rv64", "ppc32", "ppc64", "wasm32"]
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architecture_aliases = {
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"x86": "x86_32",
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"x64": "x86_64",
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"amd64": "x86_64",
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"armv7": "arm32",
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"armv8": "arm64",
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"arm64v8": "arm64",
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"aarch64": "arm64",
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"rv": "rv64",
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"riscv": "rv64",
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"riscv64": "rv64",
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"ppcle": "ppc32",
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"ppc": "ppc32",
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"ppc64le": "ppc64",
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}
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def detect_arch():
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host_machine = platform.machine().lower()
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if host_machine in architectures:
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return host_machine
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elif host_machine in architecture_aliases.keys():
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return architecture_aliases[host_machine]
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elif "86" in host_machine:
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# Catches x86, i386, i486, i586, i686, etc.
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return "x86_32"
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else:
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print("Unsupported CPU architecture: " + host_machine)
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print("Falling back to x86_64.")
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return "x86_64"
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