#!/usr/bin/env python3 """Build script for Python on WebAssembly platforms. $ ./Tools/wasm/wasm_builder.py emscripten-browser build repl $ ./Tools/wasm/wasm_builder.py emscripten-node-dl build test $ ./Tools/wasm/wasm_builder.py wasi build test Primary build targets are "emscripten-node-dl" (NodeJS, dynamic linking), "emscripten-browser", and "wasi". Emscripten builds require a recent Emscripten SDK. The tools looks for an activated EMSDK environment (". /path/to/emsdk_env.sh"). System packages (Debian, Homebrew) are not supported. WASI builds require WASI SDK and wasmtime. The tool looks for 'WASI_SDK_PATH' and falls back to /opt/wasi-sdk. The 'build' Python interpreter must be rebuilt every time Python's byte code changes. ./Tools/wasm/wasm_builder.py --clean build build """ import argparse import enum import dataclasses import logging import os import pathlib import re import shlex import shutil import socket import subprocess import sys import sysconfig import tempfile import time import warnings import webbrowser # for Python 3.8 from typing import Any, Callable, Dict, Iterable, List, Optional, Tuple, Union logger = logging.getLogger("wasm_build") SRCDIR = pathlib.Path(__file__).parent.parent.parent.absolute() WASMTOOLS = SRCDIR / "Tools" / "wasm" BUILDDIR = SRCDIR / "builddir" CONFIGURE = SRCDIR / "configure" SETUP_LOCAL = SRCDIR / "Modules" / "Setup.local" HAS_CCACHE = shutil.which("ccache") is not None # path to WASI-SDK root WASI_SDK_PATH = pathlib.Path(os.environ.get("WASI_SDK_PATH", "/opt/wasi-sdk")) # path to Emscripten SDK config file. # auto-detect's EMSDK in /opt/emsdk without ". emsdk_env.sh". EM_CONFIG = pathlib.Path(os.environ.setdefault("EM_CONFIG", "/opt/emsdk/.emscripten")) EMSDK_MIN_VERSION = (3, 1, 19) EMSDK_BROKEN_VERSION = { (3, 1, 14): "https://github.com/emscripten-core/emscripten/issues/17338", (3, 1, 16): "https://github.com/emscripten-core/emscripten/issues/17393", (3, 1, 20): "https://github.com/emscripten-core/emscripten/issues/17720", } _MISSING = pathlib.PurePath("MISSING") WASM_WEBSERVER = WASMTOOLS / "wasm_webserver.py" CLEAN_SRCDIR = f""" Builds require a clean source directory. Please use a clean checkout or run "make clean -C '{SRCDIR}'". """ INSTALL_NATIVE = f""" Builds require a C compiler (gcc, clang), make, pkg-config, and development headers for dependencies like zlib. Debian/Ubuntu: sudo apt install build-essential git curl pkg-config zlib1g-dev Fedora/CentOS: sudo dnf install gcc make git-core curl pkgconfig zlib-devel """ INSTALL_EMSDK = """ wasm32-emscripten builds need Emscripten SDK. Please follow instructions at https://emscripten.org/docs/getting_started/downloads.html how to install Emscripten and how to activate the SDK with "emsdk_env.sh". git clone https://github.com/emscripten-core/emsdk.git /path/to/emsdk cd /path/to/emsdk ./emsdk install latest ./emsdk activate latest source /path/to/emsdk_env.sh """ INSTALL_WASI_SDK = """ wasm32-wasi builds need WASI SDK. Please fetch the latest SDK from https://github.com/WebAssembly/wasi-sdk/releases and install it to "/opt/wasi-sdk". Alternatively you can install the SDK in a different location and point the environment variable WASI_SDK_PATH to the root directory of the SDK. The SDK is available for Linux x86_64, macOS x86_64, and MinGW. """ INSTALL_WASMTIME = """ wasm32-wasi tests require wasmtime on PATH. Please follow instructions at https://wasmtime.dev/ to install wasmtime. """ def parse_emconfig( emconfig: pathlib.Path = EM_CONFIG, ) -> Tuple[pathlib.PurePath, pathlib.PurePath]: """Parse EM_CONFIG file and lookup EMSCRIPTEN_ROOT and NODE_JS. The ".emscripten" config file is a Python snippet that uses "EM_CONFIG" environment variable. EMSCRIPTEN_ROOT is the "upstream/emscripten" subdirectory with tools like "emconfigure". """ if not emconfig.exists(): return _MISSING, _MISSING with open(emconfig, encoding="utf-8") as f: code = f.read() # EM_CONFIG file is a Python snippet local: Dict[str, Any] = {} exec(code, globals(), local) emscripten_root = pathlib.Path(local["EMSCRIPTEN_ROOT"]) node_js = pathlib.Path(local["NODE_JS"]) return emscripten_root, node_js EMSCRIPTEN_ROOT, NODE_JS = parse_emconfig() def read_python_version(configure: pathlib.Path = CONFIGURE) -> str: """Read PACKAGE_VERSION from configure script configure and configure.ac are the canonical source for major and minor version number. """ version_re = re.compile(r"^PACKAGE_VERSION='(\d\.\d+)'") with configure.open(encoding="utf-8") as f: for line in f: mo = version_re.match(line) if mo: return mo.group(1) raise ValueError(f"PACKAGE_VERSION not found in {configure}") PYTHON_VERSION = read_python_version() class ConditionError(ValueError): def __init__(self, info: str, text: str): self.info = info self.text = text def __str__(self): return f"{type(self).__name__}: '{self.info}'\n{self.text}" class MissingDependency(ConditionError): pass class DirtySourceDirectory(ConditionError): pass @dataclasses.dataclass class Platform: """Platform-specific settings - CONFIG_SITE override - configure wrapper (e.g. emconfigure) - make wrapper (e.g. emmake) - additional environment variables - check function to verify SDK """ name: str pythonexe: str config_site: Optional[pathlib.PurePath] configure_wrapper: Optional[pathlib.PurePath] make_wrapper: Optional[pathlib.PurePath] environ: dict check: Callable[[], None] # Used for build_emports(). ports: Optional[pathlib.PurePath] cc: Optional[pathlib.PurePath] def getenv(self, profile: "BuildProfile") -> dict: return self.environ.copy() def _check_clean_src(): candidates = [ SRCDIR / "Programs" / "python.o", SRCDIR / "Python" / "frozen_modules" / "importlib._bootstrap.h", ] for candidate in candidates: if candidate.exists(): raise DirtySourceDirectory(os.fspath(candidate), CLEAN_SRCDIR) def _check_native(): if not any(shutil.which(cc) for cc in ["cc", "gcc", "clang"]): raise MissingDependency("cc", INSTALL_NATIVE) if not shutil.which("make"): raise MissingDependency("make", INSTALL_NATIVE) if sys.platform == "linux": # skip pkg-config check on macOS if not shutil.which("pkg-config"): raise MissingDependency("pkg-config", INSTALL_NATIVE) # zlib is needed to create zip files for devel in ["zlib"]: try: subprocess.check_call(["pkg-config", "--exists", devel]) except subprocess.CalledProcessError: raise MissingDependency(devel, INSTALL_NATIVE) from None _check_clean_src() NATIVE = Platform( "native", # macOS has python.exe pythonexe=sysconfig.get_config_var("BUILDPYTHON") or "python", config_site=None, configure_wrapper=None, ports=None, cc=None, make_wrapper=None, environ={}, check=_check_native, ) def _check_emscripten(): if EMSCRIPTEN_ROOT is _MISSING: raise MissingDependency("Emscripten SDK EM_CONFIG", INSTALL_EMSDK) # sanity check emconfigure = EMSCRIPTEN.configure_wrapper if not emconfigure.exists(): raise MissingDependency(os.fspath(emconfigure), INSTALL_EMSDK) # version check version_txt = EMSCRIPTEN_ROOT / "emscripten-version.txt" if not version_txt.exists(): raise MissingDependency(os.fspath(version_txt), INSTALL_EMSDK) with open(version_txt) as f: version = f.read().strip().strip('"') if version.endswith("-git"): # git / upstream / tot-upstream installation version = version[:-4] version_tuple = tuple(int(v) for v in version.split(".")) if version_tuple < EMSDK_MIN_VERSION: raise ConditionError( os.fspath(version_txt), f"Emscripten SDK {version} in '{EMSCRIPTEN_ROOT}' is older than " "minimum required version " f"{'.'.join(str(v) for v in EMSDK_MIN_VERSION)}.", ) broken = EMSDK_BROKEN_VERSION.get(version_tuple) if broken is not None: raise ConditionError( os.fspath(version_txt), ( f"Emscripten SDK {version} in '{EMSCRIPTEN_ROOT}' has known " f"bugs, see {broken}." ), ) if os.environ.get("PKG_CONFIG_PATH"): warnings.warn( "PKG_CONFIG_PATH is set and not empty. emconfigure overrides " "this environment variable. Use EM_PKG_CONFIG_PATH instead." ) _check_clean_src() EMSCRIPTEN = Platform( "emscripten", pythonexe="python.js", config_site=WASMTOOLS / "config.site-wasm32-emscripten", configure_wrapper=EMSCRIPTEN_ROOT / "emconfigure", ports=EMSCRIPTEN_ROOT / "embuilder", cc=EMSCRIPTEN_ROOT / "emcc", make_wrapper=EMSCRIPTEN_ROOT / "emmake", environ={ # workaround for https://github.com/emscripten-core/emscripten/issues/17635 "TZ": "UTC", "EM_COMPILER_WRAPPER": "ccache" if HAS_CCACHE else None, "PATH": [EMSCRIPTEN_ROOT, os.environ["PATH"]], }, check=_check_emscripten, ) def _check_wasi(): wasm_ld = WASI_SDK_PATH / "bin" / "wasm-ld" if not wasm_ld.exists(): raise MissingDependency(os.fspath(wasm_ld), INSTALL_WASI_SDK) wasmtime = shutil.which("wasmtime") if wasmtime is None: raise MissingDependency("wasmtime", INSTALL_WASMTIME) _check_clean_src() WASI = Platform( "wasi", pythonexe="python.wasm", config_site=WASMTOOLS / "config.site-wasm32-wasi", configure_wrapper=WASMTOOLS / "wasi-env", ports=None, cc=WASI_SDK_PATH / "bin" / "clang", make_wrapper=None, environ={ "WASI_SDK_PATH": WASI_SDK_PATH, # workaround for https://github.com/python/cpython/issues/95952 "HOSTRUNNER": ( "wasmtime run " "--env PYTHONPATH=/{relbuilddir}/build/lib.wasi-wasm32-{version}:/Lib " "--mapdir /::{srcdir} --" ), "PATH": [WASI_SDK_PATH / "bin", os.environ["PATH"]], }, check=_check_wasi, ) class Host(enum.Enum): """Target host triplet""" wasm32_emscripten = "wasm32-unknown-emscripten" wasm64_emscripten = "wasm64-unknown-emscripten" wasm32_wasi = "wasm32-unknown-wasi" wasm64_wasi = "wasm64-unknown-wasi" # current platform build = sysconfig.get_config_var("BUILD_GNU_TYPE") @property def platform(self) -> Platform: if self.is_emscripten: return EMSCRIPTEN elif self.is_wasi: return WASI else: return NATIVE @property def is_emscripten(self) -> bool: cls = type(self) return self in {cls.wasm32_emscripten, cls.wasm64_emscripten} @property def is_wasi(self) -> bool: cls = type(self) return self in {cls.wasm32_wasi, cls.wasm64_wasi} def get_extra_paths(self) -> Iterable[pathlib.PurePath]: """Host-specific os.environ["PATH"] entries. Emscripten's Node version 14.x works well for wasm32-emscripten. wasm64-emscripten requires more recent v8 version, e.g. node 16.x. Attempt to use system's node command. """ cls = type(self) if self == cls.wasm32_emscripten: return [NODE_JS.parent] elif self == cls.wasm64_emscripten: # TODO: look for recent node return [] else: return [] @property def emport_args(self) -> List[str]: """Host-specific port args (Emscripten).""" cls = type(self) if self is cls.wasm64_emscripten: return ["-sMEMORY64=1"] elif self is cls.wasm32_emscripten: return ["-sMEMORY64=0"] else: return [] @property def embuilder_args(self) -> List[str]: """Host-specific embuilder args (Emscripten).""" cls = type(self) if self is cls.wasm64_emscripten: return ["--wasm64"] else: return [] class EmscriptenTarget(enum.Enum): """Emscripten-specific targets (--with-emscripten-target)""" browser = "browser" browser_debug = "browser-debug" node = "node" node_debug = "node-debug" @property def is_browser(self): cls = type(self) return self in {cls.browser, cls.browser_debug} @property def emport_args(self) -> List[str]: """Target-specific port args.""" cls = type(self) if self in {cls.browser_debug, cls.node_debug}: # some libs come in debug and non-debug builds return ["-O0"] else: return ["-O2"] class SupportLevel(enum.Enum): supported = "tier 3, supported" working = "working, unsupported" experimental = "experimental, may be broken" broken = "broken / unavailable" def __bool__(self): cls = type(self) return self in {cls.supported, cls.working} @dataclasses.dataclass class BuildProfile: name: str support_level: SupportLevel host: Host target: Union[EmscriptenTarget, None] = None dynamic_linking: Union[bool, None] = None pthreads: Union[bool, None] = None default_testopts: str = "-j2" @property def is_browser(self) -> bool: """Is this a browser build?""" return self.target is not None and self.target.is_browser @property def builddir(self) -> pathlib.Path: """Path to build directory""" return BUILDDIR / self.name @property def python_cmd(self) -> pathlib.Path: """Path to python executable""" return self.builddir / self.host.platform.pythonexe @property def makefile(self) -> pathlib.Path: """Path to Makefile""" return self.builddir / "Makefile" @property def configure_cmd(self) -> List[str]: """Generate configure command""" # use relative path, so WASI tests can find lib prefix. # pathlib.Path.relative_to() does not work here. configure = os.path.relpath(CONFIGURE, self.builddir) cmd = [configure, "-C"] platform = self.host.platform if platform.configure_wrapper: cmd.insert(0, os.fspath(platform.configure_wrapper)) cmd.append(f"--host={self.host.value}") cmd.append(f"--build={Host.build.value}") if self.target is not None: assert self.host.is_emscripten cmd.append(f"--with-emscripten-target={self.target.value}") if self.dynamic_linking is not None: assert self.host.is_emscripten opt = "enable" if self.dynamic_linking else "disable" cmd.append(f"--{opt}-wasm-dynamic-linking") if self.pthreads is not None: assert self.host.is_emscripten opt = "enable" if self.pthreads else "disable" cmd.append(f"--{opt}-wasm-pthreads") if self.host != Host.build: cmd.append(f"--with-build-python={BUILD.python_cmd}") if platform.config_site is not None: cmd.append(f"CONFIG_SITE={platform.config_site}") return cmd @property def make_cmd(self) -> List[str]: """Generate make command""" cmd = ["make"] platform = self.host.platform if platform.make_wrapper: cmd.insert(0, os.fspath(platform.make_wrapper)) return cmd def getenv(self) -> dict: """Generate environ dict for platform""" env = os.environ.copy() env.setdefault("MAKEFLAGS", f"-j{os.cpu_count()}") platenv = self.host.platform.getenv(self) for key, value in platenv.items(): if value is None: env.pop(key, None) elif key == "PATH": # list of path items, prefix with extra paths new_path: List[pathlib.PurePath] = [] new_path.extend(self.host.get_extra_paths()) new_path.extend(value) env[key] = os.pathsep.join(os.fspath(p) for p in new_path) elif isinstance(value, str): env[key] = value.format( relbuilddir=self.builddir.relative_to(SRCDIR), srcdir=SRCDIR, version=PYTHON_VERSION, ) else: env[key] = value return env def _run_cmd( self, cmd: Iterable[str], args: Iterable[str] = (), cwd: Optional[pathlib.Path] = None, ): cmd = list(cmd) cmd.extend(args) if cwd is None: cwd = self.builddir logger.info('Running "%s" in "%s"', shlex.join(cmd), cwd) return subprocess.check_call( cmd, cwd=os.fspath(cwd), env=self.getenv(), ) def _check_execute(self): if self.is_browser: raise ValueError(f"Cannot execute on {self.target}") def run_build(self, *args): """Run configure (if necessary) and make""" if not self.makefile.exists(): logger.info("Makefile not found, running configure") self.run_configure(*args) self.run_make("all", *args) def run_configure(self, *args): """Run configure script to generate Makefile""" os.makedirs(self.builddir, exist_ok=True) return self._run_cmd(self.configure_cmd, args) def run_make(self, *args): """Run make (defaults to build all)""" return self._run_cmd(self.make_cmd, args) def run_pythoninfo(self, *args): """Run 'make pythoninfo'""" self._check_execute() return self.run_make("pythoninfo", *args) def run_test(self, target: str, testopts: Optional[str] = None): """Run buildbottests""" self._check_execute() if testopts is None: testopts = self.default_testopts return self.run_make(target, f"TESTOPTS={testopts}") def run_py(self, *args): """Run Python with hostrunner""" self._check_execute() self.run_make( "--eval", f"run: all; $(HOSTRUNNER) ./$(PYTHON) {shlex.join(args)}", "run" ) def run_browser(self, bind="127.0.0.1", port=8000): """Run WASM webserver and open build in browser""" relbuilddir = self.builddir.relative_to(SRCDIR) url = f"http://{bind}:{port}/{relbuilddir}/python.html" args = [ sys.executable, os.fspath(WASM_WEBSERVER), "--bind", bind, "--port", str(port), ] srv = subprocess.Popen(args, cwd=SRCDIR) # wait for server end = time.monotonic() + 3.0 while time.monotonic() < end and srv.returncode is None: try: with socket.create_connection((bind, port), timeout=0.1) as s: pass except OSError: time.sleep(0.01) else: break webbrowser.open(url) try: srv.wait() except KeyboardInterrupt: pass def clean(self, all: bool = False): """Clean build directory""" if all: if self.builddir.exists(): shutil.rmtree(self.builddir) elif self.makefile.exists(): self.run_make("clean") def build_emports(self, force: bool = False): """Pre-build emscripten ports.""" platform = self.host.platform if platform.ports is None or platform.cc is None: raise ValueError("Need ports and CC command") embuilder_cmd = [os.fspath(platform.ports)] embuilder_cmd.extend(self.host.embuilder_args) if force: embuilder_cmd.append("--force") ports_cmd = [os.fspath(platform.cc)] ports_cmd.extend(self.host.emport_args) if self.target: ports_cmd.extend(self.target.emport_args) if self.dynamic_linking: # Trigger PIC build. ports_cmd.append("-sMAIN_MODULE") embuilder_cmd.append("--pic") if self.pthreads: # Trigger multi-threaded build. ports_cmd.append("-sUSE_PTHREADS") # Pre-build libbz2, libsqlite3, libz, and some system libs. ports_cmd.extend(["-sUSE_ZLIB", "-sUSE_BZIP2", "-sUSE_SQLITE3"]) # Multi-threaded sqlite3 has different suffix embuilder_cmd.extend( ["build", "bzip2", "sqlite3-mt" if self.pthreads else "sqlite3", "zlib"] ) self._run_cmd(embuilder_cmd, cwd=SRCDIR) with tempfile.TemporaryDirectory(suffix="-py-emport") as tmpdir: tmppath = pathlib.Path(tmpdir) main_c = tmppath / "main.c" main_js = tmppath / "main.js" with main_c.open("w") as f: f.write("int main(void) { return 0; }\n") args = [ os.fspath(main_c), "-o", os.fspath(main_js), ] self._run_cmd(ports_cmd, args, cwd=tmppath) # native build (build Python) BUILD = BuildProfile( "build", support_level=SupportLevel.working, host=Host.build, ) _profiles = [ BUILD, # wasm32-emscripten BuildProfile( "emscripten-browser", support_level=SupportLevel.supported, host=Host.wasm32_emscripten, target=EmscriptenTarget.browser, dynamic_linking=True, ), BuildProfile( "emscripten-browser-debug", support_level=SupportLevel.working, host=Host.wasm32_emscripten, target=EmscriptenTarget.browser_debug, dynamic_linking=True, ), BuildProfile( "emscripten-node-dl", support_level=SupportLevel.supported, host=Host.wasm32_emscripten, target=EmscriptenTarget.node, dynamic_linking=True, ), BuildProfile( "emscripten-node-dl-debug", support_level=SupportLevel.working, host=Host.wasm32_emscripten, target=EmscriptenTarget.node_debug, dynamic_linking=True, ), BuildProfile( "emscripten-node-pthreads", support_level=SupportLevel.supported, host=Host.wasm32_emscripten, target=EmscriptenTarget.node, pthreads=True, ), BuildProfile( "emscripten-node-pthreads-debug", support_level=SupportLevel.working, host=Host.wasm32_emscripten, target=EmscriptenTarget.node_debug, pthreads=True, ), # Emscripten build with both pthreads and dynamic linking is crashing. BuildProfile( "emscripten-node-dl-pthreads-debug", support_level=SupportLevel.broken, host=Host.wasm32_emscripten, target=EmscriptenTarget.node_debug, dynamic_linking=True, pthreads=True, ), # wasm64-emscripten (requires Emscripten >= 3.1.21) BuildProfile( "wasm64-emscripten-node-debug", support_level=SupportLevel.experimental, host=Host.wasm64_emscripten, target=EmscriptenTarget.node_debug, # MEMORY64 is not compatible with dynamic linking dynamic_linking=False, pthreads=False, ), # wasm32-wasi BuildProfile( "wasi", support_level=SupportLevel.supported, host=Host.wasm32_wasi, ), # no SDK available yet # BuildProfile( # "wasm64-wasi", # support_level=SupportLevel.broken, # host=Host.wasm64_wasi, # ), ] PROFILES = {p.name: p for p in _profiles} parser = argparse.ArgumentParser( "wasm_build.py", description=__doc__, formatter_class=argparse.RawTextHelpFormatter, ) parser.add_argument( "--clean", "-c", help="Clean build directories first", action="store_true", ) parser.add_argument( "--verbose", "-v", help="Verbose logging", action="store_true", ) parser.add_argument( "--silent", help="Run configure and make in silent mode", action="store_true", ) parser.add_argument( "--testopts", help=( "Additional test options for 'test' and 'hostrunnertest', e.g. " "--testopts='-v test_os'." ), default=None, ) # Don't list broken and experimental variants in help platforms_choices = list(p.name for p in _profiles) + ["cleanall"] platforms_help = list(p.name for p in _profiles if p.support_level) + ["cleanall"] parser.add_argument( "platform", metavar="PLATFORM", help=f"Build platform: {', '.join(platforms_help)}", choices=platforms_choices, ) ops = dict( build="auto build (build 'build' Python, emports, configure, compile)", configure="run ./configure", compile="run 'make all'", pythoninfo="run 'make pythoninfo'", test="run 'make buildbottest TESTOPTS=...' (supports parallel tests)", hostrunnertest="run 'make hostrunnertest TESTOPTS=...'", repl="start interactive REPL / webserver + browser session", clean="run 'make clean'", cleanall="remove all build directories", emports="build Emscripten port with embuilder (only Emscripten)", ) ops_help = "\n".join(f"{op:16s} {help}" for op, help in ops.items()) parser.add_argument( "ops", metavar="OP", help=f"operation (default: build)\n\n{ops_help}", choices=tuple(ops), default="build", nargs="*", ) def main(): args = parser.parse_args() logging.basicConfig( level=logging.INFO if args.verbose else logging.ERROR, format="%(message)s", ) if args.platform == "cleanall": for builder in PROFILES.values(): builder.clean(all=True) parser.exit(0) # additional configure and make args cm_args = ("--silent",) if args.silent else () # nargs=* with default quirk if args.ops == "build": args.ops = ["build"] builder = PROFILES[args.platform] try: builder.host.platform.check() except ConditionError as e: parser.error(str(e)) if args.clean: builder.clean(all=False) # hack for WASI if builder.host.is_wasi and not SETUP_LOCAL.exists(): SETUP_LOCAL.touch() # auto-build if "build" in args.ops: # check and create build Python if builder is not BUILD: logger.info("Auto-building 'build' Python.") try: BUILD.host.platform.check() except ConditionError as e: parser.error(str(e)) if args.clean: BUILD.clean(all=False) BUILD.run_build(*cm_args) # build Emscripten ports with embuilder if builder.host.is_emscripten and "emports" not in args.ops: builder.build_emports() for op in args.ops: logger.info("\n*** %s %s", args.platform, op) if op == "build": builder.run_build(*cm_args) elif op == "configure": builder.run_configure(*cm_args) elif op == "compile": builder.run_make("all", *cm_args) elif op == "pythoninfo": builder.run_pythoninfo(*cm_args) elif op == "repl": if builder.is_browser: builder.run_browser() else: builder.run_py() elif op == "test": builder.run_test("buildbottest", testopts=args.testopts) elif op == "hostrunnertest": builder.run_test("hostrunnertest", testopts=args.testopts) elif op == "clean": builder.clean(all=False) elif op == "cleanall": builder.clean(all=True) elif op == "emports": builder.build_emports(force=args.clean) else: raise ValueError(op) print(builder.builddir) parser.exit(0) if __name__ == "__main__": main()