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# Copyright 2020 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.
"""Entrypoint script for backend agnostic compile."""
import os
import pathlib
import shutil
import sys
import typing as T
from . import mlog
from . import mesonlib
from .mesonlib import MesonException
if T.TYPE_CHECKING:
import argparse
def add_arguments(parser: 'argparse.ArgumentParser') -> None:
"""Add compile specific arguments."""
parser.add_argument(
'-j', '--jobs',
action='store',
default=0,
type=int,
help='The number of worker jobs to run (if supported). If the value is less than 1 the build program will guess.'
)
parser.add_argument(
'-l', '--load-average',
action='store',
default=0,
type=int,
help='The system load average to try to maintain (if supported)'
)
parser.add_argument(
'--clean',
action='store_true',
help='Clean the build directory.'
)
parser.add_argument(
'-C',
action='store',
dest='builddir',
type=pathlib.Path,
required=True,
default='.',
help='The directory containing build files to be built.'
)
def run(options: 'argparse.Namespace') -> int:
bdir = options.builddir # type: pathlib.Path
if not bdir.exists():
raise MesonException('Path to builddir {} does not exist!'.format(str(bdir.resolve())))
if not bdir.is_dir():
raise MesonException('builddir path should be a directory.')
cmd = [] # type: T.List[str]
runner = None # type T.Optional[str]
slns = list(bdir.glob('*.sln'))
if (bdir / 'build.ninja').exists():
runner = os.environ.get('NINJA')
if not runner:
if shutil.which('ninja'):
runner = 'ninja'
elif shutil.which('samu'):
runner = 'samu'
if runner is None:
raise MesonException('Cannot find either ninja or samu.')
cmd = [runner, '-C', bdir.as_posix()]
# If the value is set to < 1 then don't set anything, which let's
# ninja/samu decide what to do.
if options.jobs > 0:
cmd.extend(['-j', str(options.jobs)])
if options.load_average > 0:
cmd.extend(['-l', str(options.load_average)])
if options.clean:
cmd.append('clean')
# TODO: with python 3.8 this could be `elif slns := bdir.glob('*.sln'):`
elif slns:
assert len(slns) == 1, 'More than one solution in a project?'
sln = slns[0]
cmd = ['msbuild', str(sln.resolve())]
# In msbuild `-m` with no number means "detect cpus", the default is `-m1`
if options.jobs > 0:
cmd.append('-m{}'.format(options.jobs))
else:
cmd.append('-m')
if options.load_average:
mlog.warning('Msbuild does not have a load-average switch, ignoring.')
if options.clean:
cmd.extend(['/t:Clean'])
# TODO: xcode?
else:
raise MesonException(
'Could not find any runner or backend for directory {}'.format(bdir.resolve().as_posix()))
mlog.log('Found runner:', runner)
p, *_ = mesonlib.Popen_safe(cmd, stdout=sys.stdout.buffer, stderr=sys.stderr.buffer)
return p.returncode
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