Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 282 insertions, 0 deletions

diff --git a/meson/mesonbuild/msetup.py b/meson/mesonbuild/msetup.py
new file mode 100644
index 000000000..9ed298160
--- /dev/null
+++ b/meson/mesonbuild/msetup.py
@@ -0,0 +1,282 @@
+# 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 typing as T
+import time
+import sys, stat
+import datetime
+import os.path
+import platform
+import cProfile as profile
+import argparse
+import tempfile
+import shutil
+import glob
+
+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
+
+git_ignore_file = '''# This file is autogenerated by Meson. If you change or delete it, it won't be recreated.
+*
+'''
+
+hg_ignore_file = '''# This file is autogenerated by Meson. If you change or delete it, it won't be recreated.
+syntax: glob
+**/*
+'''
+
+
+def add_arguments(parser: argparse.ArgumentParser) -> None:
+    coredata.register_builtin_arguments(parser)
+    parser.add_argument('--native-file',
+                        default=[],
+                        action='append',
+                        help='File containing overrides for native compilation environment.')
+    parser.add_argument('--cross-file',
+                        default=[],
+                        action='append',
+                        help='File describing cross 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. ' +
+                             'Useful 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: argparse.Namespace) -> None:
+        (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.
+            restore = []
+            with tempfile.TemporaryDirectory() as d:
+                for filename in [coredata.get_cmd_line_file(self.build_dir)] + glob.glob(os.path.join(self.build_dir, environment.Environment.private_dir, '*.ini')):
+                    try:
+                        restore.append((shutil.copy(filename, d), filename))
+                    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) and not os.path.islink(l):
+                            mesonlib.windows_proof_rmtree(l)
+                        else:
+                            mesonlib.windows_proof_rm(l)
+                finally:
+                    self.add_vcs_ignore_files(self.build_dir)
+                    for b, f in restore:
+                        os.makedirs(os.path.dirname(f), exist_ok=True)
+                        shutil.move(b, f)
+
+        self.options = options
+
+    def has_build_file(self, dirname: str) -> bool:
+        fname = os.path.join(dirname, environment.build_filename)
+        return os.path.exists(fname)
+
+    def validate_core_dirs(self, dir1: str, dir2: str) -> T.Tuple[str, str]:
+        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(f'{dir1} is not a directory')
+        if not stat.S_ISDIR(os.stat(ndir2).st_mode):
+            raise MesonException(f'{dir2} is not a directory')
+        if os.path.samefile(ndir1, ndir2):
+            # Fallback to textual compare if undefined entries found
+            has_undefined = any((s.st_ino == 0 and s.st_dev == 0) for s in (os.stat(ndir1), os.stat(ndir2)))
+            if not has_undefined or ndir1 == ndir2:
+                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(f'Both directories contain a build file {environment.build_filename}.')
+            return ndir1, ndir2
+        if self.has_build_file(ndir2):
+            return ndir2, ndir1
+        raise MesonException(f'Neither directory contains a build file {environment.build_filename}.')
+
+    def add_vcs_ignore_files(self, build_dir: str) -> None:
+        if os.listdir(build_dir):
+            return
+        with open(os.path.join(build_dir, '.gitignore'), 'w', encoding='utf-8') as ofile:
+            ofile.write(git_ignore_file)
+        with open(os.path.join(build_dir, '.hgignore'), 'w', encoding='utf-8') as ofile:
+            ofile.write(hg_ignore_file)
+
+    def validate_dirs(self, dir1: str, dir2: str, reconfigure: bool, wipe: bool) -> T.Tuple[str, str]:
+        (src_dir, build_dir) = self.validate_core_dirs(dir1, dir2)
+        self.add_vcs_ignore_files(build_dir)
+        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.')
+                raise SystemExit
+        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):
+                raise SystemExit(f'Directory does not contain a valid build tree:\n{build_dir}')
+        return src_dir, build_dir
+
+    def generate(self) -> None:
+        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())
+        if env.coredata.options[mesonlib.OptionKey('backend')].value == 'xcode':
+            mlog.warning('xcode backend is currently unmaintained, patches welcome')
+        with mesonlib.BuildDirLock(self.build_dir):
+            self._generate(env)
+
+    def _generate(self, env: environment.Environment) -> None:
+        mlog.debug('Build started at', datetime.datetime.now().isoformat())
+        mlog.debug('Main binary:', sys.executable)
+        mlog.debug('Build Options:', coredata.get_cmd_line_options(self.build_dir, self.options))
+        mlog.debug('Python system:', platform.system())
+        mlog.log(mlog.bold('The Meson build system'))
+        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():
+            logger_fun = mlog.log
+        else:
+            logger_fun = mlog.debug
+        build_machine = intr.builtin['build_machine']
+        host_machine = intr.builtin['host_machine']
+        target_machine = intr.builtin['target_machine']
+        assert isinstance(build_machine, interpreter.MachineHolder)
+        assert isinstance(host_machine, interpreter.MachineHolder)
+        assert isinstance(target_machine, interpreter.MachineHolder)
+        logger_fun('Build machine cpu family:', mlog.bold(build_machine.cpu_family_method([], {})))
+        logger_fun('Build machine cpu:', mlog.bold(build_machine.cpu_method([], {})))
+        mlog.log('Host machine cpu family:', mlog.bold(host_machine.cpu_family_method([], {})))
+        mlog.log('Host machine cpu:', mlog.bold(host_machine.cpu_method([], {})))
+        logger_fun('Target machine cpu family:', mlog.bold(target_machine.cpu_family_method([], {})))
+        logger_fun('Target machine cpu:', mlog.bold(target_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('{}'.format(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 = f'profile-{intr.backend.name}-backend.log'
+                fname = os.path.join(self.build_dir, 'meson-private', fname)
+                profile.runctx('intr.backend.generate()', globals(), locals(), filename=fname)
+            else:
+                intr.backend.generate()
+            b.devenv.append(intr.backend.get_devenv())
+            build.save(b, dumpfile)
+            if env.first_invocation:
+                # Use path resolved by coredata because they could have been
+                # read from a pipe and wrote into a private file.
+                self.options.cross_file = env.coredata.cross_files
+                self.options.native_file = env.coredata.config_files
+                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)
+
+            # Post-conf scripts must be run after writing coredata or else introspection fails.
+            intr.backend.run_postconf_scripts()
+        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: argparse.Namespace) -> int:
+    coredata.parse_cmd_line_options(options)
+    app = MesonApp(options)
+    app.generate()
+    return 0