Exemple #1
0
    def _extend_pathex(self, spec_pathex, scripts):
        """
        Normalize additional paths where PyInstaller will look for modules and
        add paths with scripts to the list of paths.

        :param spec_pathex: Additional paths defined defined in .spec file.
        :param scripts: Scripts to create executable from.
        :return: list of updated paths
        """
        # Based on main supplied script - add top-level modules directory to PYTHONPATH.
        # Sometimes the main app script is not top-level module but submodule like 'mymodule.mainscript.py'.
        # In that case PyInstaller will not be able find modules in the directory containing 'mymodule'.
        # Add this directory to PYTHONPATH so PyInstaller could find it.
        pathex = []
        # Add scripts paths first.
        for script in scripts:
            logger.debug('script: %s' % script)
            script_toplevel_dir = get_path_to_toplevel_modules(script)
            if script_toplevel_dir:
                pathex.append(script_toplevel_dir)
        # Append paths from .spec.
        if spec_pathex is not None:
            pathex.extend(spec_pathex)
        # Normalize paths in pathex and make them absolute.
        return [absnormpath(p) for p in pathex]
Exemple #2
0
    def __init__(self,
                 scripts,
                 pathex=None,
                 binaries=None,
                 datas=None,
                 hiddenimports=None,
                 hookspath=None,
                 hooksconfig=None,
                 excludes=None,
                 runtime_hooks=None,
                 cipher=None,
                 win_no_prefer_redirects=False,
                 win_private_assemblies=False,
                 noarchive=False):
        """
        scripts
                A list of scripts specified as file names.
        pathex
                An optional list of paths to be searched before sys.path.
        binaries
                An optional list of additional binaries (dlls, etc.) to include.
        datas
                An optional list of additional data files to include.
        hiddenimport
                An optional list of additional (hidden) modules to include.
        hookspath
                An optional list of additional paths to search for hooks.
                (hook-modules).
        hooksconfig
                An optional dict of config settings for hooks.
                (hook-modules).
        excludes
                An optional list of module or package names (their Python names,
                not path names) that will be ignored (as though they were not found).
        runtime_hooks
                An optional list of scripts to use as users' runtime hooks. Specified
                as file names.
        cipher
                Add optional instance of the pyz_crypto.PyiBlockCipher class
                (with a provided key).
        win_no_prefer_redirects
                If True, prefers not to follow version redirects when searching for
                Windows SxS Assemblies.
        win_private_assemblies
                If True, changes all bundled Windows SxS Assemblies into Private
                Assemblies to enforce assembly versions.
        noarchive
                If True, don't place source files in a archive, but keep them as
                individual files.
        """
        super(Analysis, self).__init__()
        from PyInstaller.config import CONF

        self.inputs = []
        spec_dir = os.path.dirname(CONF['spec'])
        for script in scripts:
            # If path is relative, it is relative to the location of .spec file.
            if not os.path.isabs(script):
                script = os.path.join(spec_dir, script)
            if absnormpath(script) in self._old_scripts:
                logger.warning('Ignoring obsolete auto-added script %s',
                               script)
                continue
            # Normalize script path.
            script = os.path.normpath(script)
            if not os.path.exists(script):
                raise SystemExit("script '%s' not found" % script)
            self.inputs.append(script)

        # Django hook requires this variable to find the script manage.py.
        CONF['main_script'] = self.inputs[0]

        self.pathex = self._extend_pathex(pathex, self.inputs)
        # Set global config variable 'pathex' to make it available for
        # PyInstaller.utils.hooks and import hooks. Path extensions for module
        # search.
        CONF['pathex'] = self.pathex
        # Extend sys.path so PyInstaller could find all necessary modules.
        logger.info('Extending PYTHONPATH with paths\n' +
                    pprint.pformat(self.pathex))
        sys.path.extend(self.pathex)

        # Set global variable to hold assembly binding redirects
        CONF['binding_redirects'] = []

        self.hiddenimports = hiddenimports or []
        # Include modules detected when parsing options, like 'codecs' and encodings.
        self.hiddenimports.extend(CONF['hiddenimports'])

        self.hookspath = []
        # Append directories in `hookspath` (`--additional-hooks-dir`) to
        # take precedence over those from the entry points.
        if hookspath:
            self.hookspath.extend(hookspath)

        # Add hook directories from PyInstaller entry points.
        self.hookspath += discover_hook_directories()

        self.hooksconfig = {}
        if hooksconfig:
            self.hooksconfig.update(hooksconfig)

        # Custom runtime hook files that should be included and started before
        # any existing PyInstaller runtime hooks.
        self.custom_runtime_hooks = runtime_hooks or []

        if cipher:
            logger.info('Will encrypt Python bytecode with key: %s',
                        cipher.key)
            # Create a Python module which contains the decryption key which will
            # be used at runtime by pyi_crypto.PyiBlockCipher.
            pyi_crypto_key_path = os.path.join(CONF['workpath'],
                                               'pyimod00_crypto_key.py')
            with open(pyi_crypto_key_path, 'w', encoding='utf-8') as f:
                f.write('# -*- coding: utf-8 -*-\n' 'key = %r\n' % cipher.key)
            self.hiddenimports.append('tinyaes')

        self.excludes = excludes or []
        self.scripts = TOC()
        self.pure = TOC()
        self.binaries = TOC()
        self.zipfiles = TOC()
        self.zipped_data = TOC()
        self.datas = TOC()
        self.dependencies = TOC()
        self.binding_redirects = CONF['binding_redirects'] = []
        self.win_no_prefer_redirects = win_no_prefer_redirects
        self.win_private_assemblies = win_private_assemblies
        self._python_version = sys.version
        self.noarchive = noarchive

        self.__postinit__()

        # TODO create function to convert datas/binaries from 'hook format' to TOC.
        # Initialise 'binaries' and 'datas' with lists specified in .spec file.
        if binaries:
            logger.info("Appending 'binaries' from .spec")
            for name, pth in format_binaries_and_datas(binaries,
                                                       workingdir=spec_dir):
                self.binaries.append((name, pth, 'BINARY'))
        if datas:
            logger.info("Appending 'datas' from .spec")
            for name, pth in format_binaries_and_datas(datas,
                                                       workingdir=spec_dir):
                self.datas.append((name, pth, 'DATA'))
Exemple #3
0
class Analysis(Target):
    """
    Class does analysis of the user's main Python scripts.

    An Analysis has five outputs, all TOCs (Table of Contents) accessed as
    attributes of the analysis.

    scripts
            The scripts you gave Analysis as input, with any runtime hook scripts
            prepended.
    pure
            The pure Python modules.
    binaries
            The extensionmodules and their dependencies. The secondary dependecies
            are filtered. On Windows files from C:\\Windows are excluded by default.
            On Linux/Unix only system libraries from /lib or /usr/lib are excluded.
    datas
            Data-file dependencies. These are data-file that are found to be needed
            by modules. They can be anything: plugins, font files, images, translations,
            etc.
    zipfiles
            The zipfiles dependencies (usually .egg files).
    """
    _old_scripts = {
        absnormpath(os.path.join(HOMEPATH, "support", "_mountzlib.py")),
        absnormpath(os.path.join(HOMEPATH, "support", "useUnicode.py")),
        absnormpath(os.path.join(HOMEPATH, "support", "useTK.py")),
        absnormpath(os.path.join(HOMEPATH, "support", "unpackTK.py")),
        absnormpath(os.path.join(HOMEPATH, "support", "removeTK.py"))
    }

    def __init__(self,
                 scripts,
                 pathex=None,
                 binaries=None,
                 datas=None,
                 hiddenimports=None,
                 hookspath=None,
                 hooksconfig=None,
                 excludes=None,
                 runtime_hooks=None,
                 cipher=None,
                 win_no_prefer_redirects=False,
                 win_private_assemblies=False,
                 noarchive=False):
        """
        scripts
                A list of scripts specified as file names.
        pathex
                An optional list of paths to be searched before sys.path.
        binaries
                An optional list of additional binaries (dlls, etc.) to include.
        datas
                An optional list of additional data files to include.
        hiddenimport
                An optional list of additional (hidden) modules to include.
        hookspath
                An optional list of additional paths to search for hooks.
                (hook-modules).
        hooksconfig
                An optional dict of config settings for hooks.
                (hook-modules).
        excludes
                An optional list of module or package names (their Python names,
                not path names) that will be ignored (as though they were not found).
        runtime_hooks
                An optional list of scripts to use as users' runtime hooks. Specified
                as file names.
        cipher
                Add optional instance of the pyz_crypto.PyiBlockCipher class
                (with a provided key).
        win_no_prefer_redirects
                If True, prefers not to follow version redirects when searching for
                Windows SxS Assemblies.
        win_private_assemblies
                If True, changes all bundled Windows SxS Assemblies into Private
                Assemblies to enforce assembly versions.
        noarchive
                If True, don't place source files in a archive, but keep them as
                individual files.
        """
        super(Analysis, self).__init__()
        from PyInstaller.config import CONF

        self.inputs = []
        spec_dir = os.path.dirname(CONF['spec'])
        for script in scripts:
            # If path is relative, it is relative to the location of .spec file.
            if not os.path.isabs(script):
                script = os.path.join(spec_dir, script)
            if absnormpath(script) in self._old_scripts:
                logger.warning('Ignoring obsolete auto-added script %s',
                               script)
                continue
            # Normalize script path.
            script = os.path.normpath(script)
            if not os.path.exists(script):
                raise SystemExit("script '%s' not found" % script)
            self.inputs.append(script)

        # Django hook requires this variable to find the script manage.py.
        CONF['main_script'] = self.inputs[0]

        self.pathex = self._extend_pathex(pathex, self.inputs)
        # Set global config variable 'pathex' to make it available for
        # PyInstaller.utils.hooks and import hooks. Path extensions for module
        # search.
        CONF['pathex'] = self.pathex
        # Extend sys.path so PyInstaller could find all necessary modules.
        logger.info('Extending PYTHONPATH with paths\n' +
                    pprint.pformat(self.pathex))
        sys.path.extend(self.pathex)

        # Set global variable to hold assembly binding redirects
        CONF['binding_redirects'] = []

        self.hiddenimports = hiddenimports or []
        # Include modules detected when parsing options, like 'codecs' and encodings.
        self.hiddenimports.extend(CONF['hiddenimports'])

        self.hookspath = []
        # Append directories in `hookspath` (`--additional-hooks-dir`) to
        # take precedence over those from the entry points.
        if hookspath:
            self.hookspath.extend(hookspath)

        # Add hook directories from PyInstaller entry points.
        self.hookspath += discover_hook_directories()

        self.hooksconfig = {}
        if hooksconfig:
            self.hooksconfig.update(hooksconfig)

        # Custom runtime hook files that should be included and started before
        # any existing PyInstaller runtime hooks.
        self.custom_runtime_hooks = runtime_hooks or []

        if cipher:
            logger.info('Will encrypt Python bytecode with key: %s',
                        cipher.key)
            # Create a Python module which contains the decryption key which will
            # be used at runtime by pyi_crypto.PyiBlockCipher.
            pyi_crypto_key_path = os.path.join(CONF['workpath'],
                                               'pyimod00_crypto_key.py')
            with open(pyi_crypto_key_path, 'w', encoding='utf-8') as f:
                f.write('# -*- coding: utf-8 -*-\n' 'key = %r\n' % cipher.key)
            self.hiddenimports.append('tinyaes')

        self.excludes = excludes or []
        self.scripts = TOC()
        self.pure = TOC()
        self.binaries = TOC()
        self.zipfiles = TOC()
        self.zipped_data = TOC()
        self.datas = TOC()
        self.dependencies = TOC()
        self.binding_redirects = CONF['binding_redirects'] = []
        self.win_no_prefer_redirects = win_no_prefer_redirects
        self.win_private_assemblies = win_private_assemblies
        self._python_version = sys.version
        self.noarchive = noarchive

        self.__postinit__()

        # TODO create function to convert datas/binaries from 'hook format' to TOC.
        # Initialise 'binaries' and 'datas' with lists specified in .spec file.
        if binaries:
            logger.info("Appending 'binaries' from .spec")
            for name, pth in format_binaries_and_datas(binaries,
                                                       workingdir=spec_dir):
                self.binaries.append((name, pth, 'BINARY'))
        if datas:
            logger.info("Appending 'datas' from .spec")
            for name, pth in format_binaries_and_datas(datas,
                                                       workingdir=spec_dir):
                self.datas.append((name, pth, 'DATA'))

    _GUTS = (  # input parameters
        ('inputs', _check_guts_eq),  # parameter `scripts`
        ('pathex', _check_guts_eq),
        ('hiddenimports', _check_guts_eq),
        ('hookspath', _check_guts_eq),
        ('hooksconfig', _check_guts_eq),
        ('excludes', _check_guts_eq),
        ('custom_runtime_hooks', _check_guts_eq),
        ('win_no_prefer_redirects', _check_guts_eq),
        ('win_private_assemblies', _check_guts_eq),
        ('noarchive', _check_guts_eq),

        #'cipher': no need to check as it is implied by an
        # additional hidden import

        #calculated/analysed values
        ('_python_version', _check_guts_eq),
        ('scripts', _check_guts_toc_mtime),
        ('pure', lambda *args: _check_guts_toc_mtime(*args, **{'pyc': 1})),
        ('binaries', _check_guts_toc_mtime),
        ('zipfiles', _check_guts_toc_mtime),
        ('zipped_data', None),  # TODO check this, too
        ('datas', _check_guts_toc_mtime),
        # TODO: Need to add "dependencies"?

        # cached binding redirects - loaded into CONF for PYZ/COLLECT to find.
        ('binding_redirects', None),
    )

    def _extend_pathex(self, spec_pathex, scripts):
        """
        Normalize additional paths where PyInstaller will look for modules and
        add paths with scripts to the list of paths.

        :param spec_pathex: Additional paths defined defined in .spec file.
        :param scripts: Scripts to create executable from.
        :return: list of updated paths
        """
        # Based on main supplied script - add top-level modules directory to PYTHONPATH.
        # Sometimes the main app script is not top-level module but submodule like 'mymodule.mainscript.py'.
        # In that case PyInstaller will not be able find modules in the directory containing 'mymodule'.
        # Add this directory to PYTHONPATH so PyInstaller could find it.
        pathex = []
        # Add scripts paths first.
        for script in scripts:
            logger.debug('script: %s' % script)
            script_toplevel_dir = get_path_to_toplevel_modules(script)
            if script_toplevel_dir:
                pathex.append(script_toplevel_dir)
        # Append paths from .spec.
        if spec_pathex is not None:
            pathex.extend(spec_pathex)
        # Normalize paths in pathex and make them absolute.
        return [absnormpath(p) for p in pathex]

    def _check_guts(self, data, last_build):
        if Target._check_guts(self, data, last_build):
            return True
        for fnm in self.inputs:
            if mtime(fnm) > last_build:
                logger.info("Building because %s changed", fnm)
                return True
        # Now we know that none of the input parameters and none of
        # the input files has changed. So take the values calculated
        # resp. analysed in the last run and store them in `self`.
        self.scripts = TOC(data['scripts'])
        self.pure = TOC(data['pure'])
        self.binaries = TOC(data['binaries'])
        self.zipfiles = TOC(data['zipfiles'])
        self.zipped_data = TOC(data['zipped_data'])
        self.datas = TOC(data['datas'])

        # Store previously found binding redirects in CONF for later use by PKG/COLLECT
        from PyInstaller.config import CONF
        self.binding_redirects = CONF['binding_redirects'] = data[
            'binding_redirects']

        return False

    def assemble(self):
        """
        This method is the MAIN method for finding all necessary files to be bundled.
        """
        from PyInstaller.config import CONF

        for m in self.excludes:
            logger.debug("Excluding module '%s'" % m)
        self.graph = initialize_modgraph(excludes=self.excludes,
                                         user_hook_dirs=self.hookspath)

        # TODO Find a better place where to put 'base_library.zip' and when to created it.
        # For Python 3 it is necessary to create file 'base_library.zip'
        # containing core Python modules. In Python 3 some built-in modules
        # are written in pure Python. base_library.zip is a way how to have
        # those modules as "built-in".
        libzip_filename = os.path.join(CONF['workpath'], 'base_library.zip')
        create_py3_base_library(libzip_filename, graph=self.graph)
        # Bundle base_library.zip as data file.
        # Data format of TOC item:   ('relative_path_in_dist_dir', 'absolute_path_on_disk', 'DATA')
        self.datas.append(
            (os.path.basename(libzip_filename), libzip_filename, 'DATA'))

        # Expand sys.path of module graph.
        # The attribute is the set of paths to use for imports: sys.path,
        # plus our loader, plus other paths from e.g. --path option).
        self.graph.path = self.pathex + self.graph.path
        self.graph.set_setuptools_nspackages()

        logger.info("running Analysis %s", self.tocbasename)
        # Get paths to Python and, in Windows, the manifest.
        python = compat.python_executable
        if not is_win:
            # Linux/MacOS: get a real, non-link path to the running Python executable.
            while os.path.islink(python):
                python = os.path.join(os.path.dirname(python),
                                      os.readlink(python))
            depmanifest = None
        else:
            # Windows: Create a manifest to embed into built .exe, containing the same
            # dependencies as python.exe.
            depmanifest = winmanifest.Manifest(
                type_="win32",
                name=CONF['specnm'],
                processorArchitecture=winmanifest.processor_architecture(),
                version=(1, 0, 0, 0))
            depmanifest.filename = os.path.join(
                CONF['workpath'], CONF['specnm'] + ".exe.manifest")

        # We record "binaries" separately from the modulegraph, as there
        # is no way to record those dependencies in the graph. These include
        # the python executable and any binaries added by hooks later.
        # "binaries" are not the same as "extensions" which are .so or .dylib
        # that are found and recorded as extension nodes in the graph.
        # Reset seen variable before running bindepend. We use bindepend only for
        # the python executable.
        bindepend.seen.clear()

        # Add binary and assembly dependencies of Python.exe.
        # This also ensures that its assembly depencies under Windows get added to the
        # built .exe's manifest. Python 2.7 extension modules have no assembly
        # dependencies, and rely on the app-global dependencies set by the .exe.
        self.binaries.extend(
            bindepend.Dependencies([('', python, '')],
                                   manifest=depmanifest,
                                   redirects=self.binding_redirects)[1:])
        if is_win:
            depmanifest.writeprettyxml()

        ### Module graph.
        #
        # Construct the module graph of import relationships between modules
        # required by this user's application. For each entry point (top-level
        # user-defined Python script), all imports originating from this entry
        # point are recursively parsed into a subgraph of the module graph. This
        # subgraph is then connected to this graph's root node, ensuring
        # imported module nodes will be reachable from the root node -- which is
        # is (arbitrarily) chosen to be the first entry point's node.

        # List to hold graph nodes of scripts and runtime hooks in use order.
        priority_scripts = []

        # Assume that if the script does not exist, Modulegraph will raise error.
        # Save the graph nodes of each in sequence.
        for script in self.inputs:
            logger.info("Analyzing %s", script)
            priority_scripts.append(self.graph.add_script(script))

        # Analyze the script's hidden imports (named on the command line)
        self.graph.add_hiddenimports(self.hiddenimports)

        ### Post-graph hooks.
        self.graph.process_post_graph_hooks(self)

        # Update 'binaries' TOC and 'datas' TOC.
        deps_proc = DependencyProcessor(self.graph,
                                        self.graph._additional_files_cache)
        self.binaries.extend(deps_proc.make_binaries_toc())
        self.datas.extend(deps_proc.make_datas_toc())
        self.zipped_data.extend(deps_proc.make_zipped_data_toc())
        # Note: zipped eggs are collected below

        ### Look for dlls that are imported by Python 'ctypes' module.
        # First get code objects of all modules that import 'ctypes'.
        logger.info('Looking for ctypes DLLs')
        # dict like:  {'module1': code_obj, 'module2': code_obj}
        ctypes_code_objs = self.graph.get_code_using("ctypes")

        for name, co in ctypes_code_objs.items():
            # Get dlls that might be needed by ctypes.
            logger.debug('Scanning %s for shared libraries or dlls', name)
            try:
                ctypes_binaries = scan_code_for_ctypes(co)
                self.binaries.extend(set(ctypes_binaries))
            except Exception as ex:
                raise RuntimeError(f"Failed to scan the module '{name}'. "
                                   f"This is a bug. Please report it.") from ex

        self.datas.extend((dest, source, "DATA")
                          for (dest, source) in format_binaries_and_datas(
                              self.graph.metadata_required()))

        # Analyze run-time hooks.
        # Run-time hooks has to be executed before user scripts. Add them
        # to the beginning of 'priority_scripts'.
        priority_scripts = self.graph.analyze_runtime_hooks(
            self.custom_runtime_hooks) + priority_scripts

        # 'priority_scripts' is now a list of the graph nodes of custom runtime
        # hooks, then regular runtime hooks, then the PyI loader scripts.
        # Further on, we will make sure they end up at the front of self.scripts

        ### Extract the nodes of the graph as TOCs for further processing.

        # Initialize the scripts list with priority scripts in the proper order.
        self.scripts = self.graph.nodes_to_toc(priority_scripts)

        # Extend the binaries list with all the Extensions modulegraph has found.
        self.binaries = self.graph.make_binaries_toc(self.binaries)
        # Fill the "pure" list with pure Python modules.
        assert len(self.pure) == 0
        self.pure = self.graph.make_pure_toc()
        # And get references to module code objects constructed by ModuleGraph
        # to avoid writing .pyc/pyo files to hdd.
        self.pure._code_cache = self.graph.get_code_objects()

        # Add remaining binary dependencies - analyze Python C-extensions and what
        # DLLs they depend on.
        logger.info('Looking for dynamic libraries')
        self.binaries.extend(
            bindepend.Dependencies(self.binaries,
                                   redirects=self.binding_redirects))

        ### Include zipped Python eggs.
        logger.info('Looking for eggs')
        self.zipfiles.extend(deps_proc.make_zipfiles_toc())

        # Verify that Python dynamic library can be found.
        # Without dynamic Python library PyInstaller cannot continue.
        self._check_python_library(self.binaries)

        if is_win:
            # Remove duplicate redirects
            self.binding_redirects[:] = list(set(self.binding_redirects))
            logger.info("Found binding redirects: \n%s",
                        self.binding_redirects)

        # Filter binaries to adjust path of extensions that come from
        # python's lib-dynload directory. Prefix them with lib-dynload
        # so that we'll collect them into subdirectory instead of
        # directly into _MEIPASS
        for idx, tpl in enumerate(self.binaries):
            name, path, typecode = tpl
            if typecode == 'EXTENSION' \
               and not os.path.dirname(os.path.normpath(name)) \
               and os.path.basename(os.path.dirname(path)) == 'lib-dynload':
                name = os.path.join('lib-dynload', name)
                self.binaries[idx] = (name, path, typecode)

        # Place Python source in data files for the noarchive case.
        if self.noarchive:
            # Create a new TOC of ``(dest path for .pyc, source for .py, type)``.
            new_toc = TOC()
            for name, path, typecode in self.pure:
                assert typecode == 'PYMODULE'
                # Transform a python module name into a file name.
                name = name.replace('.', os.sep)
                # Special case: modules have an implied filename to add.
                if os.path.splitext(os.path.basename(path))[0] == '__init__':
                    name += os.sep + '__init__'
                # Append the extension for the compiled result.
                # In python 3.5 (PEP-488) .pyo files were replaced by
                # .opt-1.pyc and .opt-2.pyc. However, it seems that for
                # bytecode-only module distribution, we always need to
                # use the .pyc extension.
                name += '.pyc'
                new_toc.append((name, path, typecode))
            # Put the result of byte-compiling this TOC in datas. Mark all entries as data.
            for name, path, typecode in compile_py_files(
                    new_toc, CONF['workpath']):
                self.datas.append((name, path, 'DATA'))
            # Store no source in the archive.
            self.pure = TOC()

        # Write warnings about missing modules.
        self._write_warnings()
        # Write debug information about hte graph
        self._write_graph_debug()

    def _write_warnings(self):
        """
        Write warnings about missing modules. Get them from the graph
        and use the graph to figure out who tried to import them.
        """
        def dependency_description(name, depInfo):
            if not depInfo or depInfo == 'direct':
                imptype = 0
            else:
                imptype = (depInfo.conditional + 2 * depInfo.function +
                           4 * depInfo.tryexcept)
            return '%s (%s)' % (name, IMPORT_TYPES[imptype])

        from PyInstaller.config import CONF
        miss_toc = self.graph.make_missing_toc()
        with open(CONF['warnfile'], 'w', encoding='utf-8') as wf:
            wf.write(WARNFILE_HEADER)
            for (n, p, status) in miss_toc:
                importers = self.graph.get_importers(n)
                print(status,
                      'module named',
                      n,
                      '- imported by',
                      ', '.join(
                          dependency_description(name, data)
                          for name, data in importers),
                      file=wf)
        logger.info("Warnings written to %s", CONF['warnfile'])

    def _write_graph_debug(self):
        """Write a xref (in html) and with `--log-level DEBUG` a dot-drawing
        of the graph.
        """
        from PyInstaller.config import CONF
        with open(CONF['xref-file'], 'w', encoding='utf-8') as fh:
            self.graph.create_xref(fh)
            logger.info("Graph cross-reference written to %s",
                        CONF['xref-file'])
        if logger.getEffectiveLevel() > logging.DEBUG:
            return
        # The `DOT language's <https://www.graphviz.org/doc/info/lang.html>`_
        # default character encoding (see the end of the linked page) is UTF-8.
        with open(CONF['dot-file'], 'w', encoding='utf-8') as fh:
            self.graph.graphreport(fh)
            logger.info("Graph drawing written to %s", CONF['dot-file'])

    def _check_python_library(self, binaries):
        """
        Verify presence of the Python dynamic library in the binary dependencies.
        Python library is an essential piece that has to be always included.
        """
        # First check that libpython is in resolved binary dependencies.
        for (nm, filename, typ) in binaries:
            if typ == 'BINARY' and nm in PYDYLIB_NAMES:
                # Just print its filename and return.
                logger.info('Using Python library %s', filename)
                # Checking was successful - end of function.
                return

        # Python lib not in dependencies - try to find it.
        logger.info(
            'Python library not in binary dependencies. Doing additional searching...'
        )
        python_lib = bindepend.get_python_library_path()
        logger.debug('Adding Python library to binary dependencies')
        binaries.append((os.path.basename(python_lib), python_lib, 'BINARY'))
        logger.info('Using Python library %s', python_lib)

    def exclude_system_libraries(self, list_of_exceptions=[]):
        """
        This method may be optionally called from the spec file to exclude
        any system libraries from the list of binaries other than those
        containing the shell-style wildcards in list_of_exceptions.
        Those that match '*python*' or are stored under 'lib-dynload' are
        always treated as exceptions and not excluded.
        """

        self.binaries = \
            [i for i in self.binaries
                if _should_include_system_binary(i, list_of_exceptions)]