| # Copyright (c) 2023 Project CHIP Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| # This file contains private utilities for use by the `configure` script. |
| # It is self-contained and depends only on the Python 3 standard library. |
| |
| import collections |
| import json |
| import os |
| import re |
| import sys |
| import urllib.request |
| import zipfile |
| |
| |
| def download_and_extract_zip(url, dest_dir, *member_names): |
| file, *_ = urllib.request.urlretrieve(url) |
| with zipfile.ZipFile(file) as zip: |
| for member in zip.infolist(): |
| if member.filename in member_names: |
| zip.extract(member, dest_dir) |
| |
| |
| def process_project_args(gn_args_json_file, *params): |
| processor = ProjectArgProcessor(gn_args_json_file) |
| processor.process_defaults() |
| processor.process_env() |
| processor.process_parameters(params) |
| for arg, value in processor.args.items(): |
| info(" - %s = %s" % (arg, value)) |
| print("%s = %s" % (arg, value)) |
| |
| |
| class ProjectArgProcessor: |
| # Prefixes to try when mapping parameters to GN arguments |
| BOOL_ARG_PREFIXES = ('is_', 'enable_', 'use_', 'chip_', 'chip_enable', 'chip_use_', 'chip_config_') |
| GENERIC_ARG_PREFIXES = ('chip_', 'chip_config_') |
| |
| gn_args = {} # GN arg -> type ('s'tring, 'b'ool, 'i'integer, '[' list, '{' struct) |
| args = collections.OrderedDict() # collected arguments |
| |
| def __init__(self, gn_args_json_file): |
| # Parse `gn args --list --json` output and derive arg types from default values |
| argtype = str.maketrans('"tf0123456789', 'sbbiiiiiiiiii') |
| with open(gn_args_json_file) as fh: |
| for arg in json.load(fh): |
| self.gn_args[arg['name']] = arg['default']['value'][0].translate(argtype) |
| |
| def process_defaults(self): |
| self.add_default('custom_toolchain', 'custom') |
| |
| def process_env(self): |
| self.add_env_arg('target_cc', 'CC', 'cc') |
| self.add_env_arg('target_cxx', 'CXX', 'cxx') |
| self.add_env_arg('target_ar', 'AR', 'ar') |
| self.add_env_arg('target_cflags', 'CPPFLAGS', list=True) |
| self.add_env_arg('target_cflags_c', 'CFLAGS', list=True) |
| self.add_env_arg('target_cflags_cc', 'CXXFLAGS', list=True) |
| self.add_env_arg('target_cflags_objc', 'OBJCFLAGS', list=True) |
| self.add_env_arg('target_ldflags', 'LDFLAGS', list=True) |
| |
| def add_arg(self, arg, value): |
| # format strings and booleans as JSON, otherwise pass through as is |
| self.args[arg] = (json.dumps(value) if self.gn_args.get(arg, 's') in 'sb' else value) |
| |
| def add_default(self, arg, value): |
| """Add an argument, if supported by the GN build""" |
| if arg in self.gn_args: |
| self.add_arg(arg, value) |
| |
| def add_env_arg(self, arg, envvar, default=None, list=False): |
| """Add an argument from an environment variable""" |
| value = os.environ.get(envvar, default) |
| if not value: |
| return |
| if not (type := self.gn_args.get(arg, None)): |
| info("Warning: Not propagating %s, project has no build arg '%s'" % (envvar, arg)) |
| return |
| self.args[arg] = json.dumps(value if type != '[' else value.split() if list else [value]) |
| |
| def gn_arg(self, name, prefixes=(), type=None): |
| """Finds the GN argument corresponding to a parameter name""" |
| arg = name.translate(str.maketrans('-', '_')) |
| candidates = [p + arg for p in (('',) + prefixes) if (p + arg) in self.gn_args] |
| preferred = [c for c in candidates if self.gn_args[c] == type] if type else [] |
| if not (match := next(iter(preferred + candidates), None)): |
| info("Warning: Project has no build arg '%s'" % arg) |
| return match |
| |
| def process_triplet_parameter(self, name, value): |
| if value is None: |
| fail("Project option --%s requires an argument" % name) |
| triplet = value.split('-') |
| if len(triplet) not in (2, 3, 4): |
| fail("Project option --%s argument must be a cpu-vendor-os[-abi] triplet" % name) |
| prefix = 'host_' if name == 'build' else 'target_' # "host" has different meanings in GNU and GN! |
| self.add_arg(prefix + 'cpu', triplet[0]) |
| self.add_arg(prefix + 'os', triplet[1 if len(triplet) == 2 else 2]) |
| |
| def process_enable_parameter(self, name, value): |
| if not (arg := self.gn_arg(name[len('enable-'):], self.BOOL_ARG_PREFIXES, 'b')): |
| return |
| if self.gn_args[arg] != 'b': |
| fail("Project build arg '%s' is not a boolean" % arg) |
| if value != 'no' and value is not None: |
| fail("Invalid argument for --%s, must be absent or 'no'" % name) |
| self.add_arg(arg, value is None) |
| |
| def process_generic_parameter(self, name, value): |
| if not (arg := self.gn_arg(name, self.GENERIC_ARG_PREFIXES)): |
| return |
| if self.gn_args[arg] == 'b': |
| fail("Project build arg '%s' is a boolean, use --enable-..." % arg) |
| if value is None: |
| fail("Project option --%s requires an argument" % name) |
| self.add_arg(arg, value) |
| |
| def process_parameter(self, name, value): |
| if name in ('build', 'host', 'target'): |
| self.process_triplet_parameter(name, value) |
| elif name.startswith('enable-'): |
| self.process_enable_parameter(name, value) |
| else: |
| self.process_generic_parameter(name, value) |
| |
| def process_parameters(self, args): |
| """Process GNU-style configure command line parameters""" |
| for arg in args: |
| if not (m := re.fullmatch(r'--([a-z][a-z0-9-]*)(?:=(.*))?', arg)): |
| fail("Invalid argument: '%s'" % arg) |
| self.process_parameter(m.group(1), m.group(2)) |
| |
| |
| def info(message): |
| print(message, file=sys.stderr) |
| |
| |
| def fail(message): |
| info("Error: " + message) |
| sys.exit(1) |
| |
| |
| # `configure` invokes the top-level functions in this file by |
| # passing the function name and arguments on the command line. |
| [_, func, *args] = sys.argv |
| globals()[func](*args) |
