diff options
Diffstat (limited to 'Android/android.py')
| -rwxr-xr-x | Android/android.py | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/Android/android.py b/Android/android.py new file mode 100755 index 00000000000..5c57e53c415 --- /dev/null +++ b/Android/android.py @@ -0,0 +1,202 @@ +#!/usr/bin/env python3 + +import argparse +import os +import re +import shutil +import subprocess +import sys +import sysconfig +from os.path import relpath +from pathlib import Path + +SCRIPT_NAME = Path(__file__).name +CHECKOUT = Path(__file__).resolve().parent.parent +CROSS_BUILD_DIR = CHECKOUT / "cross-build" + + +def delete_if_exists(path): + if path.exists(): + print(f"Deleting {path} ...") + shutil.rmtree(path) + + +def subdir(name, *, clean=None): + path = CROSS_BUILD_DIR / name + if clean: + delete_if_exists(path) + if not path.exists(): + if clean is None: + 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, *, host=None, **kwargs): + env = os.environ.copy() + if host: + env_script = CHECKOUT / "Android/android-env.sh" + env_output = subprocess.run( + f"set -eu; " + f"HOST={host}; " + f"PREFIX={subdir(host)}/prefix; " + f". {env_script}; " + f"export", + check=True, shell=True, text=True, stdout=subprocess.PIPE + ).stdout + + for line in env_output.splitlines(): + # We don't require every line to match, as there may be some other + # output from installing the NDK. + if match := re.search( + "^(declare -x |export )?(\\w+)=['\"]?(.*?)['\"]?$", line + ): + key, value = match[2], match[3] + if env.get(key) != value: + print(line) + env[key] = value + + if env == os.environ: + raise ValueError(f"Found no variables in {env_script.name} output:\n" + + env_output) + + print(">", " ".join(map(str, command))) + try: + subprocess.run(command, check=True, env=env, **kwargs) + except subprocess.CalledProcessError as e: + sys.exit(e) + + +def build_python_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("Unable to find `python(.exe)` in " + f"{build_dir}") + + return binary + + +def configure_build_python(context): + os.chdir(subdir("build", clean=context.clean)) + + command = [relpath(CHECKOUT / "configure")] + if context.args: + command.extend(context.args) + run(command) + + +def make_build_python(context): + os.chdir(subdir("build")) + run(["make", "-j", str(os.cpu_count())]) + + +def unpack_deps(host): + deps_url = "https://github.com/beeware/cpython-android-source-deps/releases/download" + for name_ver in ["bzip2-1.0.8-1", "libffi-3.4.4-2", "openssl-3.0.13-1", + "sqlite-3.45.1-0", "xz-5.4.6-0"]: + filename = f"{name_ver}-{host}.tar.gz" + run(["wget", f"{deps_url}/{name_ver}/{filename}"]) + run(["tar", "-xf", filename]) + os.remove(filename) + + +def configure_host_python(context): + host_dir = subdir(context.host, clean=context.clean) + + prefix_dir = host_dir / "prefix" + if not prefix_dir.exists(): + prefix_dir.mkdir() + os.chdir(prefix_dir) + unpack_deps(context.host) + + build_dir = host_dir / "build" + build_dir.mkdir(exist_ok=True) + os.chdir(build_dir) + + command = [ + # Basic cross-compiling configuration + relpath(CHECKOUT / "configure"), + f"--host={context.host}", + f"--build={sysconfig.get_config_var('BUILD_GNU_TYPE')}", + f"--with-build-python={build_python_path()}", + "--without-ensurepip", + + # Android always uses a shared libpython. + "--enable-shared", + "--without-static-libpython", + + # Dependent libraries. The others are found using pkg-config: see + # android-env.sh. + f"--with-openssl={prefix_dir}", + ] + + if context.args: + command.extend(context.args) + run(command, host=context.host) + + +def make_host_python(context): + host_dir = subdir(context.host) + os.chdir(host_dir / "build") + run(["make", "-j", str(os.cpu_count())], host=context.host) + run(["make", "install", f"prefix={host_dir}/prefix"], host=context.host) + + +def build_all(context): + steps = [configure_build_python, make_build_python, configure_host_python, + make_host_python] + for step in steps: + step(context) + + +def clean_all(context): + delete_if_exists(CROSS_BUILD_DIR) + + +def main(): + parser = argparse.ArgumentParser() + subcommands = parser.add_subparsers(dest="subcommand") + build = subcommands.add_parser("build", help="Build everything") + configure_build = subcommands.add_parser("configure-build", + help="Run `configure` for the " + "build Python") + make_build = subcommands.add_parser("make-build", + help="Run `make` for the build Python") + configure_host = subcommands.add_parser("configure-host", + help="Run `configure` for Android") + make_host = subcommands.add_parser("make-host", + help="Run `make` for Android") + clean = subcommands.add_parser("clean", help="Delete files and directories " + "created by this script") + for subcommand in build, configure_build, configure_host: + subcommand.add_argument( + "--clean", action="store_true", default=False, dest="clean", + help="Delete any relevant directories before building") + for subcommand in build, configure_host, make_host: + subcommand.add_argument( + "host", metavar="HOST", + choices=["aarch64-linux-android", "x86_64-linux-android"], + help="Host triplet: choices=[%(choices)s]") + for subcommand in build, configure_build, configure_host: + subcommand.add_argument("args", nargs="*", + help="Extra arguments to pass to `configure`") + + context = parser.parse_args() + dispatch = {"configure-build": configure_build_python, + "make-build": make_build_python, + "configure-host": configure_host_python, + "make-host": make_host_python, + "build": build_all, + "clean": clean_all} + dispatch[context.subcommand](context) + + +if __name__ == "__main__": + main() |