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cpython/Apple/__main__.py
Russell Keith-Magee 20758f9bb1
gh-139573: Update OpenSSL version used in iOS builds (#139582) 
Update OpenSSL version used in iOS builds.
2025-10-05 08:03:41 +03:00

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#!/usr/bin/env python3
##########################################################################
# Apple XCframework build script
#
# This script simplifies the process of configuring, compiling and packaging an
# XCframework for an Apple platform.
#
# At present, it only supports iOS, but it has been constructed so that it
# could be used on any Apple platform.
#
# The simplest entry point is:
#
# $ python Apple ci iOS
#
# which will:
# * Clean any pre-existing build artefacts
# * Configure and make a Python that can be used for the build
# * Configure and make a Python for each supported iOS architecture and ABI
# * Combine the outputs of the builds from the previous step into a single
# XCframework, merging binaries into a "fat" binary if necessary
# * Clone a copy of the testbed, configured to use the XCframework
# * Construct a tarball containing the release artefacts
# * Run the test suite using the generated XCframework.
#
# This is the complete sequence that would be needed in CI to build and test
# a candidate release artefact.
#
# Each individual step can be invoked individually - there are commands to
# clean, configure-build, make-build, configure-host, make-host, package, and
# test.
#
# There is also a build command that can be used to combine the configure and
# make steps for the build Python, an individual host, all hosts, or all
# builds.
##########################################################################
from __future__ import annotations
import argparse
import os
import platform
import re
import shlex
import shutil
import signal
import subprocess
import sys
import sysconfig
import time
from collections.abc import Sequence
from contextlib import contextmanager
from datetime import datetime, timezone
from os.path import basename, relpath
from pathlib import Path
from subprocess import CalledProcessError
from typing import Callable
EnvironmentT = dict[str, str]
ArgsT = Sequence[str | Path]
SCRIPT_NAME = Path(__file__).name
PYTHON_DIR = Path(__file__).resolve().parent.parent
CROSS_BUILD_DIR = PYTHON_DIR / "cross-build"
HOSTS: dict[str, dict[str, dict[str, str]]] = {
# Structure of this data:
# * Platform identifier
# * an XCframework slice that must exist for that platform
# * a host triple: the multiarch spec for that host
"iOS": {
"ios-arm64": {
"arm64-apple-ios": "arm64-iphoneos",
},
"ios-arm64_x86_64-simulator": {
"arm64-apple-ios-simulator": "arm64-iphonesimulator",
"x86_64-apple-ios-simulator": "x86_64-iphonesimulator",
},
},
}
def subdir(name: str, create: bool = False) -> Path:
"""Ensure that a cross-build directory for the given name exists."""
path = CROSS_BUILD_DIR / name
if not path.exists():
if not create:
sys.exit(
f"{path} does not exist. Create it by running the appropriate "
f"`configure` subcommand of {SCRIPT_NAME}."
)
else:
path.mkdir(parents=True)
return path
def run(
command: ArgsT,
*,
host: str | None = None,
env: EnvironmentT | None = None,
log: bool | None = True,
**kwargs,
) -> subprocess.CompletedProcess:
"""Run a command in an Apple development environment.
Optionally logs the executed command to the console.
"""
kwargs.setdefault("check", True)
if env is None:
env = os.environ.copy()
if host:
host_env = apple_env(host)
print_env(host_env)
env.update(host_env)
if log:
print(">", join_command(command))
return subprocess.run(command, env=env, **kwargs)
def join_command(args: str | Path | ArgsT) -> str:
"""Format a command so it can be copied into a shell.
Similar to `shlex.join`, but also accepts arguments which are Paths, or a
single string/Path outside of a list.
"""
if isinstance(args, (str, Path)):
return str(args)
else:
return shlex.join(map(str, args))
def print_env(env: EnvironmentT) -> None:
"""Format the environment so it can be pasted into a shell."""
for key, value in sorted(env.items()):
print(f"export {key}={shlex.quote(value)}")
def apple_env(host: str) -> EnvironmentT:
"""Construct an Apple development environment for the given host."""
env = {
"PATH": ":".join(
[
str(PYTHON_DIR / "Apple/iOS/Resources/bin"),
str(subdir(host) / "prefix"),
"/usr/bin",
"/bin",
"/usr/sbin",
"/sbin",
"/Library/Apple/usr/bin",
]
),
}
return env
def delete_path(name: str) -> None:
"""Delete the named cross-build directory, if it exists."""
path = CROSS_BUILD_DIR / name
if path.exists():
print(f"Deleting {path} ...")
shutil.rmtree(path)
def all_host_triples(platform: str) -> list[str]:
"""Return all host triples for the given platform.
The host triples are the platform definitions used as input to configure
(e.g., "arm64-apple-ios-simulator").
"""
triples = []
for slice_name, slice_parts in HOSTS[platform].items():
triples.extend(list(slice_parts))
return triples
def clean(context: argparse.Namespace, target: str = "all") -> None:
"""The implementation of the "clean" command."""
# If we're explicitly targeting the build, there's no platform or
# distribution artefacts. If we're cleaning tests, we keep all built
# artefacts. Otherwise, the built artefacts must be dirty, so we remove
# them.
if target not in {"build", "test"}:
paths = ["dist", context.platform] + list(HOSTS[context.platform])
else:
paths = []
if target in {"all", "build"}:
paths.append("build")
if target in {"all", "hosts"}:
paths.extend(all_host_triples(context.platform))
elif target not in {"build", "test", "package"}:
paths.append(target)
if target in {"all", "hosts", "test"}:
paths.extend(
[
path.name
for path in CROSS_BUILD_DIR.glob(
f"{context.platform}-testbed.*"
)
]
)
for path in paths:
delete_path(path)
def build_python_path() -> Path:
"""The path to the build Python binary."""
build_dir = subdir("build")
binary = build_dir / "python"
if not binary.is_file():
binary = binary.with_suffix(".exe")
if not binary.is_file():
raise FileNotFoundError(
f"Unable to find `python(.exe)` in {build_dir}"
)
return binary
@contextmanager
def group(text: str):
"""A context manager that outputs a log marker around a section of a build.
If running in a GitHub Actions environment, the GitHub syntax for
collapsible log sections is used.
"""
if "GITHUB_ACTIONS" in os.environ:
print(f"::group::{text}")
else:
print(f"===== {text} " + "=" * (70 - len(text)))
yield
if "GITHUB_ACTIONS" in os.environ:
print("::endgroup::")
else:
print()
@contextmanager
def cwd(subdir: Path):
"""A context manager that sets the current working directory."""
orig = os.getcwd()
os.chdir(subdir)
yield
os.chdir(orig)
def configure_build_python(context: argparse.Namespace) -> None:
"""The implementation of the "configure-build" command."""
if context.clean:
clean(context, "build")
with (
group("Configuring build Python"),
cwd(subdir("build", create=True)),
):
command = [relpath(PYTHON_DIR / "configure")]
if context.args:
command.extend(context.args)
run(command)
def make_build_python(context: argparse.Namespace) -> None:
"""The implementation of the "make-build" command."""
with (
group("Compiling build Python"),
cwd(subdir("build")),
):
run(["make", "-j", str(os.cpu_count())])
def apple_target(host: str) -> str:
"""Return the Apple platform identifier for a given host triple."""
for _, platform_slices in HOSTS.items():
for slice_name, slice_parts in platform_slices.items():
for host_triple, multiarch in slice_parts.items():
if host == host_triple:
return ".".join(multiarch.split("-")[::-1])
raise KeyError(host)
def apple_multiarch(host: str) -> str:
"""Return the multiarch descriptor for a given host triple."""
for _, platform_slices in HOSTS.items():
for slice_name, slice_parts in platform_slices.items():
for host_triple, multiarch in slice_parts.items():
if host == host_triple:
return multiarch
raise KeyError(host)
def unpack_deps(
platform: str,
host: str,
prefix_dir: Path,
cache_dir: Path,
) -> None:
"""Unpack binary dependencies into a provided directory.
Downloads binaries if they aren't already present. Downloads will be stored
in provided cache directory.
On iOS, as a safety mechanism, any dynamic libraries will be purged from
the unpacked dependencies.
"""
# To create new builds of these dependencies, usually all that's necessary
# is to push a tag to the cpython-apple-source-deps repository, and GitHub
# Actions will do the rest.
#
# If you're a member of the Python core team, and you'd like to be able to
# push these tags yourself, please contact Malcolm Smith or Russell
# Keith-Magee.
deps_url = "https://github.com/beeware/cpython-apple-source-deps/releases/download"
for name_ver in [
"BZip2-1.0.8-2",
"libFFI-3.4.7-2",
"OpenSSL-3.0.18-1",
"XZ-5.6.4-2",
"mpdecimal-4.0.0-2",
"zstd-1.5.7-1",
]:
filename = f"{name_ver.lower()}-{apple_target(host)}.tar.gz"
archive_path = download(
f"{deps_url}/{name_ver}/{filename}",
target_dir=cache_dir,
)
shutil.unpack_archive(archive_path, prefix_dir)
# Dynamic libraries will be preferentially linked over static;
# On iOS, ensure that no dylibs are available in the prefix folder.
if platform == "iOS":
for dylib in prefix_dir.glob("**/*.dylib"):
dylib.unlink()
def download(url: str, target_dir: Path) -> Path:
"""Download the specified URL into the given directory.
:return: The path to the downloaded archive.
"""
target_path = Path(target_dir).resolve()
target_path.mkdir(exist_ok=True, parents=True)
out_path = target_path / basename(url)
if not Path(out_path).is_file():
run(
[
"curl",
"-Lf",
"--retry",
"5",
"--retry-all-errors",
"-o",
out_path,
url,
]
)
else:
print(f"Using cached version of {basename(url)}")
return out_path
def configure_host_python(
context: argparse.Namespace,
host: str | None = None,
) -> None:
"""The implementation of the "configure-host" command."""
if host is None:
host = context.host
if context.clean:
clean(context, host)
host_dir = subdir(host, create=True)
prefix_dir = host_dir / "prefix"
with group(f"Downloading dependencies ({host})"):
if not prefix_dir.exists():
prefix_dir.mkdir()
unpack_deps(context.platform, host, prefix_dir, context.cache_dir)
else:
print("Dependencies already installed")
with (
group(f"Configuring host Python ({host})"),
cwd(host_dir),
):
command = [
# Basic cross-compiling configuration
relpath(PYTHON_DIR / "configure"),
f"--host={host}",
f"--build={sysconfig.get_config_var('BUILD_GNU_TYPE')}",
f"--with-build-python={build_python_path()}",
"--with-system-libmpdec",
"--enable-framework",
# Dependent libraries.
f"--with-openssl={prefix_dir}",
f"LIBLZMA_CFLAGS=-I{prefix_dir}/include",
f"LIBLZMA_LIBS=-L{prefix_dir}/lib -llzma",
f"LIBFFI_CFLAGS=-I{prefix_dir}/include",
f"LIBFFI_LIBS=-L{prefix_dir}/lib -lffi",
f"LIBMPDEC_CFLAGS=-I{prefix_dir}/include",
f"LIBMPDEC_LIBS=-L{prefix_dir}/lib -lmpdec",
f"LIBZSTD_CFLAGS=-I{prefix_dir}/include",
f"LIBZSTD_LIBS=-L{prefix_dir}/lib -lzstd",
]
if context.args:
command.extend(context.args)
run(command, host=host)
def make_host_python(
context: argparse.Namespace,
host: str | None = None,
) -> None:
"""The implementation of the "make-host" command."""
if host is None:
host = context.host
with (
group(f"Compiling host Python ({host})"),
cwd(subdir(host)),
):
run(["make", "-j", str(os.cpu_count())], host=host)
run(["make", "install"], host=host)
def framework_path(host_triple: str, multiarch: str) -> Path:
"""The path to a built single-architecture framework product.
:param host_triple: The host triple (e.g., arm64-apple-ios-simulator)
:param multiarch: The multiarch identifier (e.g., arm64-simulator)
"""
return CROSS_BUILD_DIR / f"{host_triple}/Apple/iOS/Frameworks/{multiarch}"
def package_version(prefix_path: Path) -> str:
"""Extract the Python version being built from patchlevel.h."""
for path in prefix_path.glob("**/patchlevel.h"):
text = path.read_text(encoding="utf-8")
if match := re.search(
r'\n\s*#define\s+PY_VERSION\s+"(.+)"\s*\n', text
):
version = match[1]
# If not building against a tagged commit, add a timestamp to the
# version. Follow the PyPA version number rules, as this will make
# it easier to process with other tools. The version will have a
# `+` suffix once any official release has been made; a freshly
# forked main branch will have a version of 3.X.0a0.
if version.endswith("a0"):
version += "+"
if version.endswith("+"):
version += datetime.now(timezone.utc).strftime("%Y%m%d.%H%M%S")
return version
sys.exit("Unable to determine Python version being packaged.")
def lib_platform_files(dirname, names):
"""A file filter that ignores platform-specific files in the lib directory.
"""
path = Path(dirname)
if (
path.parts[-3] == "lib"
and path.parts[-2].startswith("python")
and path.parts[-1] == "lib-dynload"
):
return names
elif path.parts[-2] == "lib" and path.parts[-1].startswith("python"):
ignored_names = set(
name
for name in names
if (
name.startswith("_sysconfigdata_")
or name.startswith("_sysconfig_vars_")
or name == "build-details.json"
)
)
else:
ignored_names = set()
return ignored_names
def lib_non_platform_files(dirname, names):
"""A file filter that ignores anything *except* platform-specific files
in the lib directory.
"""
path = Path(dirname)
if path.parts[-2] == "lib" and path.parts[-1].startswith("python"):
return set(names) - lib_platform_files(dirname, names) - {"lib-dynload"}
else:
return set()
def create_xcframework(platform: str) -> str:
"""Build an XCframework from the component parts for the platform.
:return: The version number of the Python verion that was packaged.
"""
package_path = CROSS_BUILD_DIR / platform
try:
package_path.mkdir()
except FileExistsError:
raise RuntimeError(
f"{platform} XCframework already exists; do you need to run with --clean?"
) from None
frameworks = []
# Merge Frameworks for each component SDK. If there's only one architecture
# for the SDK, we can use the compiled Python.framework as-is. However, if
# there's more than architecture, we need to merge the individual built
# frameworks into a merged "fat" framework.
for slice_name, slice_parts in HOSTS[platform].items():
# Some parts are the same across all slices, so we use can any of the
# host frameworks as the source for the merged version. Use the first
# one on the list, as it's as representative as any other.
first_host_triple, first_multiarch = next(iter(slice_parts.items()))
first_framework = (
framework_path(first_host_triple, first_multiarch)
/ "Python.framework"
)
if len(slice_parts) == 1:
# The first framework is the only framework, so copy it.
print(f"Copying framework for {slice_name}...")
frameworks.append(first_framework)
else:
print(f"Merging framework for {slice_name}...")
slice_path = CROSS_BUILD_DIR / slice_name
slice_framework = slice_path / "Python.framework"
slice_framework.mkdir(exist_ok=True, parents=True)
# Copy the Info.plist
shutil.copy(
first_framework / "Info.plist",
slice_framework / "Info.plist",
)
# Copy the headers
shutil.copytree(
first_framework / "Headers",
slice_framework / "Headers",
)
# Create the "fat" library binary for the slice
run(
["lipo", "-create", "-output", slice_framework / "Python"]
+ [
(
framework_path(host_triple, multiarch)
/ "Python.framework/Python"
)
for host_triple, multiarch in slice_parts.items()
]
)
# Add this merged slice to the list to be added to the XCframework
frameworks.append(slice_framework)
print()
print("Build XCframework...")
cmd = [
"xcodebuild",
"-create-xcframework",
"-output",
package_path / "Python.xcframework",
]
for framework in frameworks:
cmd.extend(["-framework", framework])
run(cmd)
# Extract the package version from the merged framework
version = package_version(package_path / "Python.xcframework")
version_tag = ".".join(version.split(".")[:2])
# On non-macOS platforms, each framework in XCframework only contains the
# headers, libPython, plus an Info.plist. Other resources like the standard
# library and binary shims aren't allowed to live in framework; they need
# to be copied in separately.
print()
print("Copy additional resources...")
has_common_stdlib = False
for slice_name, slice_parts in HOSTS[platform].items():
# Some parts are the same across all slices, so we can any of the
# host frameworks as the source for the merged version.
first_host_triple, first_multiarch = next(iter(slice_parts.items()))
first_path = framework_path(first_host_triple, first_multiarch)
first_framework = first_path / "Python.framework"
slice_path = package_path / f"Python.xcframework/{slice_name}"
slice_framework = slice_path / "Python.framework"
# Copy the binary helpers
print(f" - {slice_name} binaries")
shutil.copytree(first_path / "bin", slice_path / "bin")
# Copy the include path (this will be a symlink to the framework headers)
print(f" - {slice_name} include files")
shutil.copytree(
first_path / "include",
slice_path / "include",
symlinks=True,
)
# Copy in the cross-architecture pyconfig.h
shutil.copy(
PYTHON_DIR / f"Apple/{platform}/Resources/pyconfig.h",
slice_framework / "Headers/pyconfig.h",
)
print(f" - {slice_name} architecture-specific files")
for host_triple, multiarch in slice_parts.items():
print(f" - {multiarch} standard library")
arch, _ = multiarch.split("-", 1)
if not has_common_stdlib:
print(" - using this architecture as the common stdlib")
shutil.copytree(
framework_path(host_triple, multiarch) / "lib",
package_path / "Python.xcframework/lib",
ignore=lib_platform_files,
)
has_common_stdlib = True
shutil.copytree(
framework_path(host_triple, multiarch) / "lib",
slice_path / f"lib-{arch}",
ignore=lib_non_platform_files,
)
# Copy the host's pyconfig.h to an architecture-specific name.
arch = multiarch.split("-")[0]
host_path = (
CROSS_BUILD_DIR
/ host_triple
/ "Apple/iOS/Frameworks"
/ multiarch
)
host_framework = host_path / "Python.framework"
shutil.copy(
host_framework / "Headers/pyconfig.h",
slice_framework / f"Headers/pyconfig-{arch}.h",
)
# Apple identifies certain libraries as "security risks"; if you
# statically link those libraries into a Framework, you become
# responsible for providing a privacy manifest for that framework.
xcprivacy_file = {
"OpenSSL": subdir(host_triple) / "prefix/share/OpenSSL.xcprivacy"
}
print(f" - {multiarch} xcprivacy files")
for module, lib in [
("_hashlib", "OpenSSL"),
("_ssl", "OpenSSL"),
]:
shutil.copy(
xcprivacy_file[lib],
slice_path
/ f"lib-{arch}/python{version_tag}/lib-dynload/{module}.xcprivacy",
)
print(" - build tools")
shutil.copytree(
PYTHON_DIR / "Apple/testbed/Python.xcframework/build",
package_path / "Python.xcframework/build",
)
return version
def package(context: argparse.Namespace) -> None:
"""The implementation of the "package" command."""
if context.clean:
clean(context, "package")
with group("Building package"):
# Create an XCframework
version = create_xcframework(context.platform)
# Clone testbed
print()
run(
[
sys.executable,
"Apple/testbed",
"clone",
"--platform",
context.platform,
"--framework",
CROSS_BUILD_DIR / context.platform / "Python.xcframework",
CROSS_BUILD_DIR / context.platform / "testbed",
]
)
# Build the final archive
archive_name = (
CROSS_BUILD_DIR
/ "dist"
/ f"python-{version}-{context.platform}-XCframework"
)
print()
print("Create package archive...")
shutil.make_archive(
str(CROSS_BUILD_DIR / archive_name),
format="gztar",
root_dir=CROSS_BUILD_DIR / context.platform,
base_dir=".",
)
print()
print(f"{archive_name.relative_to(PYTHON_DIR)}.tar.gz created.")
def build(context: argparse.Namespace, host: str | None = None) -> None:
"""The implementation of the "build" command."""
if host is None:
host = context.host
if context.clean:
clean(context, host)
if host in {"all", "build"}:
for step in [
configure_build_python,
make_build_python,
]:
step(context)
if host == "build":
hosts = []
elif host in {"all", "hosts"}:
hosts = all_host_triples(context.platform)
else:
hosts = [host]
for step_host in hosts:
for step in [
configure_host_python,
make_host_python,
]:
step(context, host=step_host)
if host in {"all", "hosts"}:
package(context)
def test(context: argparse.Namespace, host: str | None = None) -> None:
"""The implementation of the "test" command."""
if host is None:
host = context.host
if context.clean:
clean(context, "test")
with group(f"Test {'XCframework' if host in {'all', 'hosts'} else host}"):
timestamp = str(time.time_ns())[:-6]
testbed_dir = (
CROSS_BUILD_DIR / f"{context.platform}-testbed.{timestamp}"
)
if host in {"all", "hosts"}:
framework_path = (
CROSS_BUILD_DIR / context.platform / "Python.xcframework"
)
else:
build_arch = platform.machine()
host_arch = host.split("-")[0]
if not host.endswith("-simulator"):
print("Skipping test suite non-simulator build.")
return
elif build_arch != host_arch:
print(
f"Skipping test suite for an {host_arch} build "
f"on an {build_arch} machine."
)
return
else:
framework_path = (
CROSS_BUILD_DIR
/ host
/ f"Apple/{context.platform}"
/ f"Frameworks/{apple_multiarch(host)}"
)
run(
[
sys.executable,
"Apple/testbed",
"clone",
"--platform",
context.platform,
"--framework",
framework_path,
testbed_dir,
]
)
run(
[
sys.executable,
testbed_dir,
"run",
"--verbose",
]
+ (
["--simulator", str(context.simulator)]
if context.simulator
else []
)
+ [
"--",
"test",
"--slow-ci" if context.slow else "--fast-ci",
"--single-process",
"--no-randomize",
# Timeout handling requires subprocesses; explicitly setting
# the timeout to -1 disables the faulthandler.
"--timeout=-1",
# Adding Python options requires the use of a subprocess to
# start a new Python interpreter.
"--dont-add-python-opts",
]
)
def ci(context: argparse.Namespace) -> None:
"""The implementation of the "ci" command."""
clean(context, "all")
build(context, host="all")
test(context, host="all")
def parse_args() -> argparse.Namespace:
parser = argparse.ArgumentParser(
description=(
"A tool for managing the build, package and test process of "
"CPython on Apple platforms."
),
)
parser.suggest_on_error = True
subcommands = parser.add_subparsers(dest="subcommand", required=True)
clean = subcommands.add_parser(
"clean",
help="Delete all build directories",
)
configure_build = subcommands.add_parser(
"configure-build", help="Run `configure` for the build Python"
)
subcommands.add_parser(
"make-build", help="Run `make` for the build Python"
)
configure_host = subcommands.add_parser(
"configure-host",
help="Run `configure` for a specific platform and target",
)
make_host = subcommands.add_parser(
"make-host",
help="Run `make` for a specific platform and target",
)
package = subcommands.add_parser(
"package",
help="Create a release package for the platform",
)
build = subcommands.add_parser(
"build",
help="Build all platform targets and create the XCframework",
)
test = subcommands.add_parser(
"test",
help="Run the testbed for a specific platform",
)
ci = subcommands.add_parser(
"ci",
help="Run build, package, and test",
)
# platform argument
for cmd in [clean, configure_host, make_host, package, build, test, ci]:
cmd.add_argument(
"platform",
choices=HOSTS.keys(),
help="The target platform to build",
)
# host triple argument
for cmd in [configure_host, make_host]:
cmd.add_argument(
"host",
help="The host triple to build (e.g., arm64-apple-ios-simulator)",
)
# optional host triple argument
for cmd in [clean, build, test]:
cmd.add_argument(
"host",
nargs="?",
default="all",
help=(
"The host triple to build (e.g., arm64-apple-ios-simulator), "
"or 'build' for just the build platform, or 'hosts' for all "
"host platforms, or 'all' for the build platform and all "
"hosts. Defaults to 'all'"
),
)
# --clean option
for cmd in [configure_build, configure_host, build, package, test, ci]:
cmd.add_argument(
"--clean",
action="store_true",
default=False,
dest="clean",
help="Delete the relevant build directories first",
)
# --cache-dir option
for cmd in [configure_host, build, ci]:
cmd.add_argument(
"--cache-dir",
default="./cross-build/downloads",
help="The directory to store cached downloads.",
)
# --simulator option
for cmd in [test, ci]:
cmd.add_argument(
"--simulator",
help=(
"The name of the simulator to use (eg: 'iPhone 16e'). Defaults to "
"the most recently released 'entry level' iPhone device. Device "
"architecture and OS version can also be specified; e.g., "
"`--simulator 'iPhone 16 Pro,arch=arm64,OS=26.0'` would run on "
"an ARM64 iPhone 16 Pro simulator running iOS 26.0."
),
)
cmd.add_argument(
"--slow",
action="store_true",
help="Run tests with --slow-ci options.",
)
for subcommand in [configure_build, configure_host, build, ci]:
subcommand.add_argument(
"args", nargs="*", help="Extra arguments to pass to `configure`"
)
return parser.parse_args()
def print_called_process_error(e: subprocess.CalledProcessError) -> None:
for stream_name in ["stdout", "stderr"]:
content = getattr(e, stream_name)
stream = getattr(sys, stream_name)
if content:
stream.write(content)
if not content.endswith("\n"):
stream.write("\n")
# shlex uses single quotes, so we surround the command with double quotes.
print(
f'Command "{join_command(e.cmd)}" returned exit status {e.returncode}'
)
def main() -> None:
# Handle SIGTERM the same way as SIGINT. This ensures that if we're
# terminated by the buildbot worker, we'll make an attempt to clean up our
# subprocesses.
def signal_handler(*args):
os.kill(os.getpid(), signal.SIGINT)
signal.signal(signal.SIGTERM, signal_handler)
# Process command line arguments
context = parse_args()
dispatch: dict[str, Callable] = {
"clean": clean,
"configure-build": configure_build_python,
"make-build": make_build_python,
"configure-host": configure_host_python,
"make-host": make_host_python,
"package": package,
"build": build,
"test": test,
"ci": ci,
}
try:
dispatch[context.subcommand](context)
except CalledProcessError as e:
print()
print_called_process_error(e)
sys.exit(1)
except RuntimeError as e:
print()
print(e)
sys.exit(2)
if __name__ == "__main__":
main()
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