The Meson Build System
http://mesonbuild.com/
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275 lines
11 KiB
275 lines
11 KiB
# Copyright 2014-2016 The Meson development team |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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import os |
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import sys |
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import argparse |
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from . import (coredata, mesonlib, build) |
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def buildparser(): |
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parser = argparse.ArgumentParser(prog='meson configure') |
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coredata.register_builtin_arguments(parser) |
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parser.add_argument('-D', action='append', default=[], dest='sets', |
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help='Set an option to the given value.') |
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parser.add_argument('directory', nargs='*') |
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parser.add_argument('--clearcache', action='store_true', default=False, |
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help='Clear cached state (e.g. found dependencies)') |
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return parser |
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def filter_builtin_options(args, original_args): |
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"""Filter out any args passed with -- instead of -D.""" |
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for arg in original_args: |
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if not arg.startswith('--') or arg == '--clearcache': |
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continue |
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name = arg.lstrip('--').split('=', 1)[0] |
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if any([a.startswith(name + '=') for a in args.sets]): |
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raise mesonlib.MesonException( |
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'Got argument {0} as both -D{0} and --{0}. Pick one.'.format(name)) |
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args.sets.append('{}={}'.format(name, getattr(args, name))) |
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delattr(args, name) |
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class ConfException(mesonlib.MesonException): |
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pass |
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class Conf: |
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def __init__(self, build_dir): |
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self.build_dir = build_dir |
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if not os.path.isdir(os.path.join(build_dir, 'meson-private')): |
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raise ConfException('Directory %s does not seem to be a Meson build directory.' % build_dir) |
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self.build = build.load(self.build_dir) |
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self.coredata = coredata.load(self.build_dir) |
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def clear_cache(self): |
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self.coredata.deps = {} |
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def save(self): |
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# Only called if something has changed so overwrite unconditionally. |
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coredata.save(self.coredata, self.build_dir) |
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# We don't write the build file because any changes to it |
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# are erased when Meson is executed the next time, i.e. when |
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# Ninja is run. |
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@staticmethod |
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def print_aligned(arr): |
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def make_lower_case(val): |
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if isinstance(val, bool): |
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return str(val).lower() |
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elif isinstance(val, list): |
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return [make_lower_case(i) for i in val] |
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else: |
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return str(val) |
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if not arr: |
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return |
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titles = {'name': 'Option', 'descr': 'Description', 'value': 'Current Value', 'choices': 'Possible Values'} |
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name_col = [titles['name'], '-' * len(titles['name'])] |
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value_col = [titles['value'], '-' * len(titles['value'])] |
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choices_col = [titles['choices'], '-' * len(titles['choices'])] |
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descr_col = [titles['descr'], '-' * len(titles['descr'])] |
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choices_found = False |
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for opt in arr: |
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name_col.append(opt['name']) |
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descr_col.append(opt['descr']) |
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if isinstance(opt['value'], list): |
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value_col.append('[{0}]'.format(', '.join(make_lower_case(opt['value'])))) |
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else: |
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value_col.append(make_lower_case(opt['value'])) |
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if opt['choices']: |
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choices_found = True |
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choices_col.append('[{0}]'.format(', '.join(make_lower_case(opt['choices'])))) |
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else: |
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choices_col.append('') |
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col_widths = (max([len(i) for i in name_col], default=0), |
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max([len(i) for i in value_col], default=0), |
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max([len(i) for i in choices_col], default=0), |
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max([len(i) for i in descr_col], default=0)) |
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for line in zip(name_col, value_col, choices_col, descr_col): |
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if choices_found: |
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print(' {0:{width[0]}} {1:{width[1]}} {2:{width[2]}} {3:{width[3]}}'.format(*line, width=col_widths)) |
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else: |
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print(' {0:{width[0]}} {1:{width[1]}} {3:{width[3]}}'.format(*line, width=col_widths)) |
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def set_options(self, options): |
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for o in options: |
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if '=' not in o: |
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raise ConfException('Value "%s" not of type "a=b".' % o) |
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(k, v) = o.split('=', 1) |
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if coredata.is_builtin_option(k): |
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self.coredata.set_builtin_option(k, v) |
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elif k in self.coredata.backend_options: |
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tgt = self.coredata.backend_options[k] |
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tgt.set_value(v) |
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elif k in self.coredata.user_options: |
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tgt = self.coredata.user_options[k] |
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tgt.set_value(v) |
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elif k in self.coredata.compiler_options: |
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tgt = self.coredata.compiler_options[k] |
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tgt.set_value(v) |
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elif k in self.coredata.base_options: |
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tgt = self.coredata.base_options[k] |
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tgt.set_value(v) |
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elif k.endswith('_link_args'): |
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lang = k[:-10] |
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if lang not in self.coredata.external_link_args: |
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raise ConfException('Unknown language %s in linkargs.' % lang) |
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# TODO, currently split on spaces, make it so that user |
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# can pass in an array string. |
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newvalue = v.split() |
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self.coredata.external_link_args[lang] = newvalue |
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elif k.endswith('_args'): |
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lang = k[:-5] |
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if lang not in self.coredata.external_args: |
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raise ConfException('Unknown language %s in compile args' % lang) |
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# TODO same fix as above |
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newvalue = v.split() |
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self.coredata.external_args[lang] = newvalue |
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else: |
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raise ConfException('Unknown option %s.' % k) |
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def print_conf(self): |
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print('Core properties:') |
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print(' Source dir', self.build.environment.source_dir) |
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print(' Build dir ', self.build.environment.build_dir) |
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print('\nCore options:\n') |
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carr = [] |
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for key in ['buildtype', 'warning_level', 'werror', 'strip', 'unity', 'default_library', 'install_umask']: |
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carr.append({'name': key, |
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'descr': coredata.get_builtin_option_description(key), |
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'value': self.coredata.get_builtin_option(key), |
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'choices': coredata.get_builtin_option_choices(key)}) |
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self.print_aligned(carr) |
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if not self.coredata.backend_options: |
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print(' No backend options\n') |
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else: |
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bearr = [] |
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for k in sorted(self.coredata.backend_options): |
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o = self.coredata.backend_options[k] |
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bearr.append({'name': k, 'descr': o.description, 'value': o.value, 'choices': ''}) |
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self.print_aligned(bearr) |
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print('\nBase options:') |
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if not self.coredata.base_options: |
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print(' No base options\n') |
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else: |
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coarr = [] |
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for k in sorted(self.coredata.base_options): |
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o = self.coredata.base_options[k] |
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coarr.append({'name': k, 'descr': o.description, 'value': o.value, 'choices': o.choices}) |
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self.print_aligned(coarr) |
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print('\nCompiler arguments:') |
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for (lang, args) in self.coredata.external_args.items(): |
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print(' ' + lang + '_args', str(args)) |
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print('\nLinker args:') |
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for (lang, args) in self.coredata.external_link_args.items(): |
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print(' ' + lang + '_link_args', str(args)) |
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print('\nCompiler options:') |
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if not self.coredata.compiler_options: |
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print(' No compiler options\n') |
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else: |
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coarr = [] |
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for k in self.coredata.compiler_options: |
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o = self.coredata.compiler_options[k] |
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coarr.append({'name': k, 'descr': o.description, 'value': o.value, 'choices': ''}) |
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self.print_aligned(coarr) |
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print('\nDirectories:') |
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parr = [] |
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for key in ['prefix', |
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'libdir', |
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'libexecdir', |
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'bindir', |
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'sbindir', |
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'includedir', |
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'datadir', |
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'mandir', |
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'infodir', |
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'localedir', |
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'sysconfdir', |
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'localstatedir', |
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'sharedstatedir', |
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]: |
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parr.append({'name': key, |
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'descr': coredata.get_builtin_option_description(key), |
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'value': self.coredata.get_builtin_option(key), |
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'choices': coredata.get_builtin_option_choices(key)}) |
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self.print_aligned(parr) |
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print('\nProject options:') |
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if not self.coredata.user_options: |
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print(' This project does not have any options') |
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else: |
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optarr = [] |
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for key in sorted(self.coredata.user_options): |
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opt = self.coredata.user_options[key] |
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if (opt.choices is None) or (not opt.choices): |
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# Zero length list or string |
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choices = '' |
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else: |
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choices = opt.choices |
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optarr.append({'name': key, |
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'descr': opt.description, |
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'value': opt.value, |
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'choices': choices}) |
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self.print_aligned(optarr) |
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print('\nTesting options:') |
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tarr = [] |
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for key in ['stdsplit', 'errorlogs']: |
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tarr.append({'name': key, |
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'descr': coredata.get_builtin_option_description(key), |
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'value': self.coredata.get_builtin_option(key), |
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'choices': coredata.get_builtin_option_choices(key)}) |
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self.print_aligned(tarr) |
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def run(args): |
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args = mesonlib.expand_arguments(args) |
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if not args: |
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args = [os.getcwd()] |
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options = buildparser().parse_args(args) |
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filter_builtin_options(options, args) |
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if len(options.directory) > 1: |
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print('%s <build directory>' % args[0]) |
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print('If you omit the build directory, the current directory is substituted.') |
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return 1 |
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if not options.directory: |
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builddir = os.getcwd() |
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else: |
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builddir = options.directory[0] |
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try: |
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c = Conf(builddir) |
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save = False |
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if len(options.sets) > 0: |
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c.set_options(options.sets) |
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save = True |
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elif options.clearcache: |
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c.clear_cache() |
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save = True |
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else: |
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c.print_conf() |
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if save: |
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c.save() |
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except ConfException as e: |
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print('Meson configurator encountered an error:') |
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raise e |
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return 0 |
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if __name__ == '__main__': |
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sys.exit(run(sys.argv[1:]))
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