mirror of
https://github.com/python/cpython.git
synced 2024-11-24 17:47:13 +01:00
251 lines
8.3 KiB
Python
Executable File
251 lines
8.3 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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from glob import glob
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import os
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import re
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import shutil
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import subprocess
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import sys
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import sysconfig
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from os.path import basename, relpath
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from pathlib import Path
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from tempfile import TemporaryDirectory
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SCRIPT_NAME = Path(__file__).name
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CHECKOUT = Path(__file__).resolve().parent.parent
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CROSS_BUILD_DIR = CHECKOUT / "cross-build"
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def delete_glob(pattern):
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# Path.glob doesn't accept non-relative patterns.
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for path in glob(str(pattern)):
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path = Path(path)
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print(f"Deleting {path} ...")
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if path.is_dir() and not path.is_symlink():
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shutil.rmtree(path)
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else:
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path.unlink()
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def subdir(name, *, clean=None):
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path = CROSS_BUILD_DIR / name
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if clean:
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delete_glob(path)
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if not path.exists():
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if clean is None:
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sys.exit(
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f"{path} does not exist. Create it by running the appropriate "
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f"`configure` subcommand of {SCRIPT_NAME}.")
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else:
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path.mkdir(parents=True)
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return path
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def run(command, *, host=None, **kwargs):
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env = os.environ.copy()
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if host:
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env_script = CHECKOUT / "Android/android-env.sh"
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env_output = subprocess.run(
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f"set -eu; "
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f"HOST={host}; "
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f"PREFIX={subdir(host)}/prefix; "
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f". {env_script}; "
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f"export",
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check=True, shell=True, text=True, stdout=subprocess.PIPE
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).stdout
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for line in env_output.splitlines():
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# We don't require every line to match, as there may be some other
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# output from installing the NDK.
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if match := re.search(
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"^(declare -x |export )?(\\w+)=['\"]?(.*?)['\"]?$", line
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):
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key, value = match[2], match[3]
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if env.get(key) != value:
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print(line)
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env[key] = value
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if env == os.environ:
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raise ValueError(f"Found no variables in {env_script.name} output:\n"
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+ env_output)
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print(">", " ".join(map(str, command)))
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try:
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subprocess.run(command, check=True, env=env, **kwargs)
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except subprocess.CalledProcessError as e:
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sys.exit(e)
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def build_python_path():
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"""The path to the build Python binary."""
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build_dir = subdir("build")
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binary = build_dir / "python"
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if not binary.is_file():
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binary = binary.with_suffix(".exe")
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if not binary.is_file():
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raise FileNotFoundError("Unable to find `python(.exe)` in "
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f"{build_dir}")
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return binary
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def configure_build_python(context):
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os.chdir(subdir("build", clean=context.clean))
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command = [relpath(CHECKOUT / "configure")]
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if context.args:
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command.extend(context.args)
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run(command)
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def make_build_python(context):
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os.chdir(subdir("build"))
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run(["make", "-j", str(os.cpu_count())])
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def unpack_deps(host):
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deps_url = "https://github.com/beeware/cpython-android-source-deps/releases/download"
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for name_ver in ["bzip2-1.0.8-1", "libffi-3.4.4-2", "openssl-3.0.13-1",
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"sqlite-3.45.1-0", "xz-5.4.6-0"]:
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filename = f"{name_ver}-{host}.tar.gz"
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download(f"{deps_url}/{name_ver}/{filename}")
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run(["tar", "-xf", filename])
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os.remove(filename)
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def download(url, target_dir="."):
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out_path = f"{target_dir}/{basename(url)}"
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run(["curl", "-Lf", "-o", out_path, url])
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return out_path
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def configure_host_python(context):
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host_dir = subdir(context.host, clean=context.clean)
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prefix_dir = host_dir / "prefix"
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if not prefix_dir.exists():
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prefix_dir.mkdir()
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os.chdir(prefix_dir)
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unpack_deps(context.host)
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build_dir = host_dir / "build"
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build_dir.mkdir(exist_ok=True)
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os.chdir(build_dir)
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command = [
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# Basic cross-compiling configuration
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relpath(CHECKOUT / "configure"),
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f"--host={context.host}",
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f"--build={sysconfig.get_config_var('BUILD_GNU_TYPE')}",
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f"--with-build-python={build_python_path()}",
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"--without-ensurepip",
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# Android always uses a shared libpython.
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"--enable-shared",
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"--without-static-libpython",
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# Dependent libraries. The others are found using pkg-config: see
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# android-env.sh.
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f"--with-openssl={prefix_dir}",
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]
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if context.args:
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command.extend(context.args)
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run(command, host=context.host)
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def make_host_python(context):
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# The CFLAGS and LDFLAGS set in android-env include the prefix dir, so
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# delete any previously-installed Python libs and include files to prevent
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# them being used during the build.
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host_dir = subdir(context.host)
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prefix_dir = host_dir / "prefix"
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delete_glob(f"{prefix_dir}/include/python*")
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delete_glob(f"{prefix_dir}/lib/libpython*")
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os.chdir(host_dir / "build")
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run(["make", "-j", str(os.cpu_count())], host=context.host)
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run(["make", "install", f"prefix={prefix_dir}"], host=context.host)
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def build_all(context):
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steps = [configure_build_python, make_build_python, configure_host_python,
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make_host_python]
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for step in steps:
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step(context)
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def clean_all(context):
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delete_glob(CROSS_BUILD_DIR)
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# To avoid distributing compiled artifacts without corresponding source code,
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# the Gradle wrapper is not included in the CPython repository. Instead, we
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# extract it from the Gradle release.
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def setup_testbed(context):
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ver_long = "8.7.0"
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ver_short = ver_long.removesuffix(".0")
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testbed_dir = CHECKOUT / "Android/testbed"
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for filename in ["gradlew", "gradlew.bat"]:
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out_path = download(
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f"https://raw.githubusercontent.com/gradle/gradle/v{ver_long}/{filename}",
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testbed_dir)
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os.chmod(out_path, 0o755)
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with TemporaryDirectory(prefix=SCRIPT_NAME) as temp_dir:
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os.chdir(temp_dir)
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bin_zip = download(
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f"https://services.gradle.org/distributions/gradle-{ver_short}-bin.zip")
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outer_jar = f"gradle-{ver_short}/lib/plugins/gradle-wrapper-{ver_short}.jar"
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run(["unzip", bin_zip, outer_jar])
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run(["unzip", "-o", "-d", f"{testbed_dir}/gradle/wrapper", outer_jar,
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"gradle-wrapper.jar"])
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def main():
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parser = argparse.ArgumentParser()
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subcommands = parser.add_subparsers(dest="subcommand")
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build = subcommands.add_parser("build", help="Build everything")
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configure_build = subcommands.add_parser("configure-build",
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help="Run `configure` for the "
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"build Python")
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make_build = subcommands.add_parser("make-build",
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help="Run `make` for the build Python")
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configure_host = subcommands.add_parser("configure-host",
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help="Run `configure` for Android")
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make_host = subcommands.add_parser("make-host",
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help="Run `make` for Android")
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subcommands.add_parser(
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"clean", help="Delete the cross-build directory")
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subcommands.add_parser(
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"setup-testbed", help="Download the testbed Gradle wrapper")
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for subcommand in build, configure_build, configure_host:
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subcommand.add_argument(
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"--clean", action="store_true", default=False, dest="clean",
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help="Delete any relevant directories before building")
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for subcommand in build, configure_host, make_host:
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subcommand.add_argument(
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"host", metavar="HOST",
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choices=["aarch64-linux-android", "x86_64-linux-android"],
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help="Host triplet: choices=[%(choices)s]")
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for subcommand in build, configure_build, configure_host:
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subcommand.add_argument("args", nargs="*",
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help="Extra arguments to pass to `configure`")
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context = parser.parse_args()
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dispatch = {"configure-build": configure_build_python,
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"make-build": make_build_python,
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"configure-host": configure_host_python,
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"make-host": make_host_python,
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"build": build_all,
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"clean": clean_all,
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"setup-testbed": setup_testbed}
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dispatch[context.subcommand](context)
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if __name__ == "__main__":
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main()
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