The Meson Build System
http://mesonbuild.com/
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297 lines
12 KiB
297 lines
12 KiB
# Copyright 2012-2016 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 sys, stat, traceback, pickle, argparse |
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import time, datetime |
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import os.path |
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from . import environment, interpreter, mesonlib |
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from . import build |
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import platform |
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from . import mlog, coredata |
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from .mesonlib import MesonException |
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parser = argparse.ArgumentParser() |
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default_warning = '1' |
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def add_builtin_argument(name, **kwargs): |
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k = kwargs.get('dest', name.replace('-', '_')) |
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c = coredata.get_builtin_option_choices(k) |
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b = True if kwargs.get('action', None) in ['store_true', 'store_false'] else False |
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h = coredata.get_builtin_option_description(k) |
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if not b: |
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h = h.rstrip('.') + ' (default: %s).' % coredata.get_builtin_option_default(k) |
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if c and not b: |
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kwargs['choices'] = c |
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parser.add_argument('--' + name, default=coredata.get_builtin_option_default(k), help=h, **kwargs) |
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add_builtin_argument('prefix') |
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add_builtin_argument('libdir') |
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add_builtin_argument('libexecdir') |
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add_builtin_argument('bindir') |
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add_builtin_argument('sbindir') |
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add_builtin_argument('includedir') |
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add_builtin_argument('datadir') |
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add_builtin_argument('mandir') |
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add_builtin_argument('infodir') |
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add_builtin_argument('localedir') |
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add_builtin_argument('sysconfdir') |
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add_builtin_argument('localstatedir') |
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add_builtin_argument('sharedstatedir') |
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add_builtin_argument('backend') |
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add_builtin_argument('buildtype') |
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add_builtin_argument('strip', action='store_true') |
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add_builtin_argument('unity', action='store_true') |
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add_builtin_argument('werror', action='store_true') |
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add_builtin_argument('layout') |
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add_builtin_argument('default-library') |
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add_builtin_argument('warnlevel', dest='warning_level') |
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add_builtin_argument('stdsplit', action='store_false') |
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add_builtin_argument('errorlogs', action='store_false') |
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parser.add_argument('--cross-file', default=None, |
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help='File describing cross compilation environment.') |
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parser.add_argument('-D', action='append', dest='projectoptions', default=[], |
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help='Set project options.') |
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parser.add_argument('-v', '--version', action='version', |
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version=coredata.version) |
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parser.add_argument('directories', nargs='*') |
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class MesonApp: |
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def __init__(self, dir1, dir2, script_launcher, handshake, options, original_cmd_line_args): |
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(self.source_dir, self.build_dir) = self.validate_dirs(dir1, dir2, handshake) |
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self.meson_script_launcher = script_launcher |
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self.options = options |
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self.original_cmd_line_args = original_cmd_line_args |
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def has_build_file(self, dirname): |
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fname = os.path.join(dirname, environment.build_filename) |
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return os.path.exists(fname) |
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def validate_core_dirs(self, dir1, dir2): |
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ndir1 = os.path.abspath(dir1) |
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ndir2 = os.path.abspath(dir2) |
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if not os.path.exists(ndir1): |
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os.makedirs(ndir1) |
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if not os.path.exists(ndir2): |
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os.makedirs(ndir2) |
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if not stat.S_ISDIR(os.stat(ndir1).st_mode): |
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raise RuntimeError('%s is not a directory' % dir1) |
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if not stat.S_ISDIR(os.stat(ndir2).st_mode): |
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raise RuntimeError('%s is not a directory' % dir2) |
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if os.path.samefile(dir1, dir2): |
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raise RuntimeError('Source and build directories must not be the same. Create a pristine build directory.') |
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if self.has_build_file(ndir1): |
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if self.has_build_file(ndir2): |
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raise RuntimeError('Both directories contain a build file %s.' % environment.build_filename) |
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return ndir1, ndir2 |
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if self.has_build_file(ndir2): |
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return ndir2, ndir1 |
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raise RuntimeError('Neither directory contains a build file %s.' % environment.build_filename) |
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def validate_dirs(self, dir1, dir2, handshake): |
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(src_dir, build_dir) = self.validate_core_dirs(dir1, dir2) |
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priv_dir = os.path.join(build_dir, 'meson-private/coredata.dat') |
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if os.path.exists(priv_dir): |
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if not handshake: |
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msg = '''Trying to run Meson on a build directory that has already been configured. |
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If you want to build it, just run your build command (e.g. ninja) inside the |
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build directory. Meson will autodetect any changes in your setup and regenerate |
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itself as required. |
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If you want to change option values, use the mesonconf tool instead.''' |
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raise RuntimeError(msg) |
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else: |
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if handshake: |
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raise RuntimeError('Something went terribly wrong. Please file a bug.') |
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return src_dir, build_dir |
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def check_pkgconfig_envvar(self, env): |
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curvar = os.environ.get('PKG_CONFIG_PATH', '') |
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if curvar != env.coredata.pkgconf_envvar: |
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mlog.warning('PKG_CONFIG_PATH has changed between invocations from "%s" to "%s".' % |
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(env.coredata.pkgconf_envvar, curvar)) |
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env.coredata.pkgconf_envvar = curvar |
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def generate(self): |
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env = environment.Environment(self.source_dir, self.build_dir, self.meson_script_launcher, self.options, self.original_cmd_line_args) |
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mlog.initialize(env.get_log_dir()) |
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mlog.debug('Build started at', datetime.datetime.now().isoformat()) |
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mlog.debug('Python binary:', sys.executable) |
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mlog.debug('Python system:', platform.system()) |
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mlog.log(mlog.bold('The Meson build system')) |
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self.check_pkgconfig_envvar(env) |
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mlog.log('Version:', coredata.version) |
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mlog.log('Source dir:', mlog.bold(self.source_dir)) |
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mlog.log('Build dir:', mlog.bold(self.build_dir)) |
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if env.is_cross_build(): |
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mlog.log('Build type:', mlog.bold('cross build')) |
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else: |
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mlog.log('Build type:', mlog.bold('native build')) |
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b = build.Build(env) |
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if self.options.backend == 'ninja': |
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from .backend import ninjabackend |
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g = ninjabackend.NinjaBackend(b) |
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elif self.options.backend == 'vs2010': |
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from .backend import vs2010backend |
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g = vs2010backend.Vs2010Backend(b) |
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elif self.options.backend == 'vs2015': |
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from .backend import vs2015backend |
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g = vs2015backend.Vs2015Backend(b) |
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elif self.options.backend == 'xcode': |
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from .backend import xcodebackend |
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g = xcodebackend.XCodeBackend(b) |
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else: |
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raise RuntimeError('Unknown backend "%s".' % self.options.backend) |
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intr = interpreter.Interpreter(b, g) |
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if env.is_cross_build(): |
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mlog.log('Host machine cpu family:', mlog.bold(intr.builtin['host_machine'].cpu_family_method([], {}))) |
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mlog.log('Host machine cpu:', mlog.bold(intr.builtin['host_machine'].cpu_method([], {}))) |
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mlog.log('Target machine cpu family:', mlog.bold(intr.builtin['target_machine'].cpu_family_method([], {}))) |
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mlog.log('Target machine cpu:', mlog.bold(intr.builtin['target_machine'].cpu_method([], {}))) |
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mlog.log('Build machine cpu family:', mlog.bold(intr.builtin['build_machine'].cpu_family_method([], {}))) |
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mlog.log('Build machine cpu:', mlog.bold(intr.builtin['build_machine'].cpu_method([], {}))) |
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intr.run() |
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coredata_mtime = time.time() |
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g.generate(intr) |
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g.run_postconf_scripts() |
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dumpfile = os.path.join(env.get_scratch_dir(), 'build.dat') |
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with open(dumpfile, 'wb') as f: |
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pickle.dump(b, f) |
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# Write this last since we use the existence of this file to check if |
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# we generated the build file successfully, so we don't want an error |
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# that pops up during generation, post-conf scripts, etc to cause us to |
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# incorrectly signal a successful meson run which will cause an error |
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# about an already-configured build directory when the user tries again. |
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# |
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# However, we set the mtime to an earlier value to ensure that doing an |
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# mtime comparison between the coredata dump and other build files |
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# shows the build files to be newer, not older. |
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env.dump_coredata(coredata_mtime) |
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def run_script_command(args): |
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cmdname = args[0] |
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cmdargs = args[1:] |
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if cmdname == 'exe': |
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import mesonbuild.scripts.meson_exe as abc |
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cmdfunc = abc.run |
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elif cmdname == 'cleantrees': |
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import mesonbuild.scripts.cleantrees as abc |
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cmdfunc = abc.run |
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elif cmdname == 'install': |
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import mesonbuild.scripts.meson_install as abc |
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cmdfunc = abc.run |
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elif cmdname == 'commandrunner': |
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import mesonbuild.scripts.commandrunner as abc |
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cmdfunc = abc.run |
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elif cmdname == 'delsuffix': |
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import mesonbuild.scripts.delwithsuffix as abc |
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cmdfunc = abc.run |
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elif cmdname == 'depfixer': |
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import mesonbuild.scripts.depfixer as abc |
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cmdfunc = abc.run |
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elif cmdname == 'dirchanger': |
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import mesonbuild.scripts.dirchanger as abc |
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cmdfunc = abc.run |
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elif cmdname == 'gtkdoc': |
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import mesonbuild.scripts.gtkdochelper as abc |
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cmdfunc = abc.run |
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elif cmdname == 'regencheck': |
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import mesonbuild.scripts.regen_checker as abc |
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cmdfunc = abc.run |
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elif cmdname == 'symbolextractor': |
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import mesonbuild.scripts.symbolextractor as abc |
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cmdfunc = abc.run |
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elif cmdname == 'scanbuild': |
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import mesonbuild.scripts.scanbuild as abc |
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cmdfunc = abc.run |
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elif cmdname == 'vcstagger': |
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import mesonbuild.scripts.vcstagger as abc |
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cmdfunc = abc.run |
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elif cmdname == 'gettext': |
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import mesonbuild.scripts.gettext as abc |
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cmdfunc = abc.run |
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elif cmdname == 'yelphelper': |
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import mesonbuild.scripts.yelphelper as abc |
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cmdfunc = abc.run |
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elif cmdname == 'uninstall': |
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import mesonbuild.scripts.uninstall as abc |
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cmdfunc = abc.run |
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else: |
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raise MesonException('Unknown internal command {}.'.format(cmdname)) |
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return cmdfunc(cmdargs) |
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def run(mainfile, args): |
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if sys.version_info < (3, 3): |
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print('Meson works correctly only with python 3.3+.') |
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print('You have python %s.' % sys.version) |
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print('Please update your environment') |
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return 1 |
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if len(args) >= 2 and args[0] == '--internal': |
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if args[1] != 'regenerate': |
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script = args[1] |
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try: |
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sys.exit(run_script_command(args[1:])) |
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except MesonException as e: |
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mlog.log(mlog.red('\nError in {} helper script:'.format(script))) |
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mlog.log(e) |
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sys.exit(1) |
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args = args[2:] |
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handshake = True |
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else: |
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handshake = False |
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args = mesonlib.expand_arguments(args) |
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options = parser.parse_args(args) |
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args = options.directories |
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if len(args) == 0 or len(args) > 2: |
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# if there's a meson.build in the dir above, and not in the current |
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# directory, assume we're in the build directory |
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if len(args) == 0 and not os.path.exists('meson.build') and os.path.exists('../meson.build'): |
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dir1 = '..' |
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dir2 = '.' |
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else: |
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print('{} <source directory> <build directory>'.format(sys.argv[0])) |
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print('If you omit either directory, the current directory is substituted.') |
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print('Run {} --help for more information.'.format(sys.argv[0])) |
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return 1 |
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else: |
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dir1 = args[0] |
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if len(args) > 1: |
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dir2 = args[1] |
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else: |
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dir2 = '.' |
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try: |
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app = MesonApp(dir1, dir2, mainfile, handshake, options, sys.argv) |
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except Exception as e: |
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# Log directory does not exist, so just print |
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# to stdout. |
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print('Error during basic setup:\n') |
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print(e) |
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return 1 |
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try: |
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app.generate() |
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except Exception as e: |
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if isinstance(e, MesonException): |
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if hasattr(e, 'file') and hasattr(e, 'lineno') and hasattr(e, 'colno'): |
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mlog.log(mlog.red('\nMeson encountered an error in file %s, line %d, column %d:' % (e.file, e.lineno, e.colno))) |
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else: |
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mlog.log(mlog.red('\nMeson encountered an error:')) |
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mlog.log(e) |
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else: |
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traceback.print_exc() |
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return 1 |
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return 0
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