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- # Copyright 2016-2018 The Meson development team
- # 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.
- import time
- import sys, stat
- import datetime
- import os.path
- import platform
- import cProfile as profile
- import argparse
- from . import environment, interpreter, mesonlib
- from . import build
- from . import mlog, coredata
- from . import mintro
- from .mconf import make_lower_case
- from .mesonlib import MesonException
- def add_arguments(parser):
- coredata.register_builtin_arguments(parser)
- parser.add_argument('--cross-file', default=None,
- help='File describing cross compilation environment.')
- parser.add_argument('--native-file',
- default=[],
- action='append',
- help='File containing overrides for native compilation environment.')
- parser.add_argument('-v', '--version', action='version',
- version=coredata.version)
- parser.add_argument('--profile-self', action='store_true', dest='profile',
- help=argparse.SUPPRESS)
- parser.add_argument('--fatal-meson-warnings', action='store_true', dest='fatal_warnings',
- help='Make all Meson warnings fatal')
- parser.add_argument('--reconfigure', action='store_true',
- help='Set options and reconfigure the project. Useful when new ' +
- 'options have been added to the project and the default value ' +
- 'is not working.')
- parser.add_argument('--wipe', action='store_true',
- help='Wipe build directory and reconfigure using previous command line options. ' +
- 'Userful when build directory got corrupted, or when rebuilding with a ' +
- 'newer version of meson.')
- parser.add_argument('builddir', nargs='?', default=None)
- parser.add_argument('sourcedir', nargs='?', default=None)
- class MesonApp:
- def __init__(self, options):
- (self.source_dir, self.build_dir) = self.validate_dirs(options.builddir,
- options.sourcedir,
- options.reconfigure,
- options.wipe)
- if options.wipe:
- # Make a copy of the cmd line file to make sure we can always
- # restore that file if anything bad happens. For example if
- # configuration fails we need to be able to wipe again.
- filename = coredata.get_cmd_line_file(self.build_dir)
- try:
- with open(filename, 'r') as f:
- content = f.read()
- except FileNotFoundError:
- raise MesonException(
- 'Cannot find cmd_line.txt. This is probably because this '
- 'build directory was configured with a meson version < 0.49.0.')
- coredata.read_cmd_line_file(self.build_dir, options)
- try:
- # Don't delete the whole tree, just all of the files and
- # folders in the tree. Otherwise calling wipe form the builddir
- # will cause a crash
- for l in os.listdir(self.build_dir):
- l = os.path.join(self.build_dir, l)
- if os.path.isdir(l):
- mesonlib.windows_proof_rmtree(l)
- else:
- mesonlib.windows_proof_rm(l)
- finally:
- # Restore the file
- path = os.path.dirname(filename)
- os.makedirs(path, exist_ok=True)
- with open(filename, 'w') as f:
- f.write(content)
- self.options = options
- def has_build_file(self, dirname):
- fname = os.path.join(dirname, environment.build_filename)
- return os.path.exists(fname)
- def validate_core_dirs(self, dir1, dir2):
- if dir1 is None:
- if dir2 is None:
- if not os.path.exists('meson.build') and os.path.exists('../meson.build'):
- dir2 = '..'
- else:
- raise MesonException('Must specify at least one directory name.')
- dir1 = os.getcwd()
- if dir2 is None:
- dir2 = os.getcwd()
- ndir1 = os.path.abspath(os.path.realpath(dir1))
- ndir2 = os.path.abspath(os.path.realpath(dir2))
- if not os.path.exists(ndir1):
- os.makedirs(ndir1)
- if not os.path.exists(ndir2):
- os.makedirs(ndir2)
- if not stat.S_ISDIR(os.stat(ndir1).st_mode):
- raise MesonException('%s is not a directory' % dir1)
- if not stat.S_ISDIR(os.stat(ndir2).st_mode):
- raise MesonException('%s is not a directory' % dir2)
- if os.path.samefile(dir1, dir2):
- raise MesonException('Source and build directories must not be the same. Create a pristine build directory.')
- if self.has_build_file(ndir1):
- if self.has_build_file(ndir2):
- raise MesonException('Both directories contain a build file %s.' % environment.build_filename)
- return ndir1, ndir2
- if self.has_build_file(ndir2):
- return ndir2, ndir1
- raise MesonException('Neither directory contains a build file %s.' % environment.build_filename)
- def validate_dirs(self, dir1, dir2, reconfigure, wipe):
- (src_dir, build_dir) = self.validate_core_dirs(dir1, dir2)
- priv_dir = os.path.join(build_dir, 'meson-private/coredata.dat')
- if os.path.exists(priv_dir):
- if not reconfigure and not wipe:
- print('Directory already configured.\n'
- '\nJust run your build command (e.g. ninja) and Meson will regenerate as necessary.\n'
- 'If ninja fails, run "ninja reconfigure" or "meson --reconfigure"\n'
- 'to force Meson to regenerate.\n'
- '\nIf build failures persist, run "meson setup --wipe" to rebuild from scratch\n'
- 'using the same options as passed when configuring the build.'
- '\nTo change option values, run "meson configure" instead.')
- sys.exit(0)
- else:
- has_cmd_line_file = os.path.exists(coredata.get_cmd_line_file(build_dir))
- if (wipe and not has_cmd_line_file) or (not wipe and reconfigure):
- print('Directory does not contain a valid build tree:\n{}'.format(build_dir))
- sys.exit(1)
- return src_dir, build_dir
- def check_pkgconfig_envvar(self, env):
- curvar = os.environ.get('PKG_CONFIG_PATH', '')
- if curvar != env.coredata.pkgconf_envvar:
- mlog.warning('PKG_CONFIG_PATH has changed between invocations from "%s" to "%s".' %
- (env.coredata.pkgconf_envvar, curvar))
- env.coredata.pkgconf_envvar = curvar
- def generate(self):
- env = environment.Environment(self.source_dir, self.build_dir, self.options)
- mlog.initialize(env.get_log_dir(), self.options.fatal_warnings)
- if self.options.profile:
- mlog.set_timestamp_start(time.monotonic())
- with mesonlib.BuildDirLock(self.build_dir):
- self._generate(env)
- def _generate(self, env):
- mlog.debug('Build started at', datetime.datetime.now().isoformat())
- mlog.debug('Main binary:', sys.executable)
- mlog.debug('Python system:', platform.system())
- mlog.log(mlog.bold('The Meson build system'))
- self.check_pkgconfig_envvar(env)
- mlog.log('Version:', coredata.version)
- mlog.log('Source dir:', mlog.bold(self.source_dir))
- mlog.log('Build dir:', mlog.bold(self.build_dir))
- if env.is_cross_build():
- mlog.log('Build type:', mlog.bold('cross build'))
- else:
- mlog.log('Build type:', mlog.bold('native build'))
- b = build.Build(env)
- intr = interpreter.Interpreter(b)
- if env.is_cross_build():
- mlog.log('Host machine cpu family:', mlog.bold(intr.builtin['host_machine'].cpu_family_method([], {})))
- mlog.log('Host machine cpu:', mlog.bold(intr.builtin['host_machine'].cpu_method([], {})))
- mlog.log('Target machine cpu family:', mlog.bold(intr.builtin['target_machine'].cpu_family_method([], {})))
- mlog.log('Target machine cpu:', mlog.bold(intr.builtin['target_machine'].cpu_method([], {})))
- mlog.log('Build machine cpu family:', mlog.bold(intr.builtin['build_machine'].cpu_family_method([], {})))
- mlog.log('Build machine cpu:', mlog.bold(intr.builtin['build_machine'].cpu_method([], {})))
- try:
- if self.options.profile:
- fname = os.path.join(self.build_dir, 'meson-private', 'profile-interpreter.log')
- profile.runctx('intr.run()', globals(), locals(), filename=fname)
- else:
- intr.run()
- except Exception as e:
- mintro.write_meson_info_file(b, [e])
- raise
- # Print all default option values that don't match the current value
- for def_opt_name, def_opt_value, cur_opt_value in intr.get_non_matching_default_options():
- mlog.log('Option', mlog.bold(def_opt_name), 'is:',
- mlog.bold(make_lower_case(cur_opt_value.printable_value())),
- '[default: {}]'.format(make_lower_case(def_opt_value)))
- try:
- dumpfile = os.path.join(env.get_scratch_dir(), 'build.dat')
- # We would like to write coredata as late as possible since we use the existence of
- # this file to check if we generated the build file successfully. Since coredata
- # includes settings, the build files must depend on it and appear newer. However, due
- # to various kernel caches, we cannot guarantee that any time in Python is exactly in
- # sync with the time that gets applied to any files. Thus, we dump this file as late as
- # possible, but before build files, and if any error occurs, delete it.
- cdf = env.dump_coredata()
- if self.options.profile:
- fname = 'profile-{}-backend.log'.format(intr.backend.name)
- fname = os.path.join(self.build_dir, 'meson-private', fname)
- profile.runctx('intr.backend.generate(intr)', globals(), locals(), filename=fname)
- else:
- intr.backend.generate(intr)
- build.save(b, dumpfile)
- # Post-conf scripts must be run after writing coredata or else introspection fails.
- intr.backend.run_postconf_scripts()
- if env.first_invocation:
- coredata.write_cmd_line_file(self.build_dir, self.options)
- else:
- coredata.update_cmd_line_file(self.build_dir, self.options)
- # Generate an IDE introspection file with the same syntax as the already existing API
- if self.options.profile:
- fname = os.path.join(self.build_dir, 'meson-private', 'profile-introspector.log')
- profile.runctx('mintro.generate_introspection_file(b, intr.backend)', globals(), locals(), filename=fname)
- else:
- mintro.generate_introspection_file(b, intr.backend)
- mintro.write_meson_info_file(b, [], True)
- except Exception as e:
- mintro.write_meson_info_file(b, [e])
- if 'cdf' in locals():
- old_cdf = cdf + '.prev'
- if os.path.exists(old_cdf):
- os.replace(old_cdf, cdf)
- else:
- os.unlink(cdf)
- raise
- def run(options):
- coredata.parse_cmd_line_options(options)
- app = MesonApp(options)
- app.generate()
- return 0
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