text: # Copyright 2015-2016 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.
  
  '''This module provides helper functions for Gnome/GLib related
  functionality such as gobject-introspection, gresources and gtk-doc'''
  
  import os
  import copy
  import subprocess
  import functools
  import typing as T
  
  from .. import build
  from .. import mlog
  from .. import mesonlib
  from .. import interpreter
  from . import GResourceTarget, GResourceHeaderTarget, GirTarget, TypelibTarget, VapiTarget
  from . import ExtensionModule
  from . import ModuleReturnValue
  from ..mesonlib import (
      MachineChoice, MesonException, OrderedSet, Popen_safe, extract_as_list,
      join_args, unholder,
  )
  from ..dependencies import Dependency, PkgConfigDependency, InternalDependency
  from ..interpreterbase import noPosargs, noKwargs, permittedKwargs, FeatureNew, FeatureNewKwargs, FeatureDeprecatedKwargs
  from ..programs import ExternalProgram, OverrideProgram
  
  if T.TYPE_CHECKING:
      from ..compilers import Compiler
  
  # gresource compilation is broken due to the way
  # the resource compiler and Ninja clash about it
  #
  # https://github.com/ninja-build/ninja/issues/1184
  # https://bugzilla.gnome.org/show_bug.cgi?id=774368
  gresource_dep_needed_version = '>= 2.51.1'
  
  native_glib_version = None
  
  class GnomeModule(ExtensionModule):
      def __init__(self, interpreter: 'Interpreter') -> None:
          super().__init__(interpreter)
          self.gir_dep = None
          self.install_glib_compile_schemas = False
          self.install_gio_querymodules = []
          self.install_gtk_update_icon_cache = False
          self.devenv = None
  
      @staticmethod
      def _get_native_glib_version(state):
          global native_glib_version
          if native_glib_version is None:
              glib_dep = PkgConfigDependency('glib-2.0', state.environment,
                                             {'native': True, 'required': False})
              if glib_dep.found():
                  native_glib_version = glib_dep.get_version()
              else:
                  mlog.warning('Could not detect glib version, assuming 2.54. '
                               'You may get build errors if your glib is older.')
                  native_glib_version = '2.54'
          return native_glib_version
  
      @mesonlib.run_once
      def __print_gresources_warning(self, state):
          if not mesonlib.version_compare(self._get_native_glib_version(state),
                                          gresource_dep_needed_version):
              mlog.warning('GLib compiled dependencies do not work reliably with \n'
                           'the current version of GLib. See the following upstream issue:',
                           mlog.bold('https://bugzilla.gnome.org/show_bug.cgi?id=774368'))
  
      @staticmethod
      def _print_gdbus_warning():
          mlog.warning('Code generated with gdbus_codegen() requires the root directory be added to\n'
                       '  include_directories of targets with GLib < 2.51.3:',
                       mlog.bold('https://github.com/mesonbuild/meson/issues/1387'),
                       once=True)
  
      def _get_native_dep(self, state, depname, required=True):
          kwargs = {'native': True, 'required': required}
          holder = self.interpreter.func_dependency(state.current_node, [depname], kwargs)
          return holder.held_object
  
      def _get_native_binary(self, state, name, depname, varname, required=True):
          # Look in overrides in case glib/gtk/etc are built as subproject
          prog = self.interpreter.program_from_overrides([name], [])
          if prog is not None:
              return unholder(prog)
  
          # Look in machine file
          prog = state.environment.lookup_binary_entry(MachineChoice.HOST, name)
          if prog is not None:
              return ExternalProgram.from_entry(name, prog)
  
          # Check if pkgconfig has a variable
          dep = self._get_native_dep(state, depname, required=False)
          if dep.found() and dep.type_name == 'pkgconfig':
              value = dep.get_pkgconfig_variable(varname, {})
              if value:
                  return ExternalProgram(name, value)
  
          # Normal program lookup
          return unholder(self.interpreter.find_program_impl(name, required=required))
  
      @permittedKwargs({'glib_compile_schemas', 'gio_querymodules', 'gtk_update_icon_cache'})
      @noPosargs
      @FeatureNew('gnome.post_install', '0.57.0')
      def post_install(self, state, args, kwargs):
          rv = []
          datadir_abs = os.path.join(state.environment.get_prefix(), state.environment.get_datadir())
          if kwargs.get('glib_compile_schemas', False) and not self.install_glib_compile_schemas:
              self.install_glib_compile_schemas = True
              prog = self._get_native_binary(state, 'glib-compile-schemas', 'gio-2.0', 'glib_compile_schemas')
              schemasdir = os.path.join(datadir_abs, 'glib-2.0', 'schemas')
              script = state.backend.get_executable_serialisation([prog, schemasdir])
              script.skip_if_destdir = True
              rv.append(script)
          for d in mesonlib.extract_as_list(kwargs, 'gio_querymodules'):
              if d not in self.install_gio_querymodules:
                  self.install_gio_querymodules.append(d)
                  prog = self._get_native_binary(state, 'gio-querymodules', 'gio-2.0', 'gio_querymodules')
                  moduledir = os.path.join(state.environment.get_prefix(), d)
                  script = state.backend.get_executable_serialisation([prog, moduledir])
                  script.skip_if_destdir = True
                  rv.append(script)
          if kwargs.get('gtk_update_icon_cache', False) and not self.install_gtk_update_icon_cache:
              self.install_gtk_update_icon_cache = True
              prog = self._get_native_binary(state, 'gtk4-update-icon-cache', 'gtk-4.0', 'gtk4_update_icon_cache', required=False)
              found = isinstance(prog, build.Executable) or prog.found()
              if not found:
                  prog = self._get_native_binary(state, 'gtk-update-icon-cache', 'gtk+-3.0', 'gtk_update_icon_cache')
              icondir = os.path.join(datadir_abs, 'icons', 'hicolor')
              script = state.backend.get_executable_serialisation([prog, '-q', '-t' ,'-f', icondir])
              script.skip_if_destdir = True
              rv.append(script)
          return ModuleReturnValue(None, rv)
  
      @FeatureNewKwargs('gnome.compile_resources', '0.37.0', ['gresource_bundle', 'export', 'install_header'])
      @permittedKwargs({'source_dir', 'c_name', 'dependencies', 'export', 'gresource_bundle', 'install_header',
                        'install', 'install_dir', 'extra_args', 'build_by_default'})
      def compile_resources(self, state, args, kwargs):
          self.__print_gresources_warning(state)
          glib_version = self._get_native_glib_version(state)
  
          glib_compile_resources = self.interpreter.find_program_impl('glib-compile-resources')
          cmd = [glib_compile_resources, '@INPUT@']
  
          source_dirs, dependencies = [mesonlib.extract_as_list(kwargs, c, pop=True) for c in  ['source_dir', 'dependencies']]
  
          if len(args) < 2:
              raise MesonException('Not enough arguments; the name of the resource '
                                   'and the path to the XML file are required')
  
          # Validate dependencies
          subdirs = []
          depends = []
          for (ii, dep) in enumerate(unholder(dependencies)):
              if isinstance(dep, mesonlib.File):
                  subdirs.append(dep.subdir)
              elif isinstance(dep, (build.CustomTarget, build.CustomTargetIndex)):
                  depends.append(dep)
                  subdirs.append(dep.get_subdir())
                  if not mesonlib.version_compare(glib_version, gresource_dep_needed_version):
                      m = 'The "dependencies" argument of gnome.compile_resources() can not\n' \
                          'be used with the current version of glib-compile-resources due to\n' \
                          '<https://bugzilla.gnome.org/show_bug.cgi?id=774368>'
                      raise MesonException(m)
              else:
                  m = 'Unexpected dependency type {!r} for gnome.compile_resources() ' \
                      '"dependencies" argument.\nPlease pass the return value of ' \
                      'custom_target() or configure_file()'
                  raise MesonException(m.format(dep))
  
          if not mesonlib.version_compare(glib_version, gresource_dep_needed_version):
              ifile = args[1]
              if isinstance(ifile, mesonlib.File):
                  # glib-compile-resources will be run inside the source dir,
                  # so we need either 'src_to_build' or the absolute path.
                  # Absolute path is the easiest choice.
                  if ifile.is_built:
                      ifile = os.path.join(state.environment.get_build_dir(), ifile.subdir, ifile.fname)
                  else:
                      ifile = os.path.join(ifile.subdir, ifile.fname)
              elif isinstance(ifile, str):
                  ifile = os.path.join(state.subdir, ifile)
              elif isinstance(ifile, (interpreter.CustomTargetHolder,
                                      interpreter.CustomTargetIndexHolder,
                                      interpreter.GeneratedObjectsHolder)):
                  m = 'Resource xml files generated at build-time cannot be used ' \
                      'with gnome.compile_resources() because we need to scan ' \
                      'the xml for dependencies. Use configure_file() instead ' \
                      'to generate it at configure-time.'
                  raise MesonException(m)
              else:
                  raise MesonException(f'Invalid file argument: {ifile!r}')
              depend_files, depends, subdirs = self._get_gresource_dependencies(
                  state, ifile, source_dirs, dependencies)
  
          # Make source dirs relative to build dir now
          source_dirs = [os.path.join(state.build_to_src, state.subdir, d) for d in source_dirs]
          # Ensure build directories of generated deps are included
          source_dirs += subdirs
          # Always include current directory, but after paths set by user
          source_dirs.append(os.path.join(state.build_to_src, state.subdir))
  
          for source_dir in OrderedSet(source_dirs):
              cmd += ['--sourcedir', source_dir]
  
          if 'c_name' in kwargs:
              cmd += ['--c-name', kwargs.pop('c_name')]
          export = kwargs.pop('export', False)
          if not export:
              cmd += ['--internal']
  
          cmd += ['--generate', '--target', '@OUTPUT@']
  
          cmd += mesonlib.stringlistify(kwargs.pop('extra_args', []))
  
          gresource = kwargs.pop('gresource_bundle', False)
          if gresource:
              output = args[0] + '.gresource'
              name = args[0] + '_gresource'
          else:
              if 'c' in state.environment.coredata.compilers.host.keys():
                  output = args[0] + '.c'
                  name = args[0] + '_c'
              elif 'cpp' in state.environment.coredata.compilers.host.keys():
                  output = args[0] + '.cpp'
                  name = args[0] + '_cpp'
              else:
                  raise MesonException('Compiling GResources into code is only supported in C and C++ projects')
  
          if kwargs.get('install', False) and not gresource:
              raise MesonException('The install kwarg only applies to gresource bundles, see install_header')
  
          install_header = kwargs.pop('install_header', False)
          if install_header and gresource:
              raise MesonException('The install_header kwarg does not apply to gresource bundles')
          if install_header and not export:
              raise MesonException('GResource header is installed yet export is not enabled')
  
          kwargs['input'] = args[1]
          kwargs['output'] = output
          kwargs['depends'] = depends
          if not mesonlib.version_compare(glib_version, gresource_dep_needed_version):
              # This will eventually go out of sync if dependencies are added
              kwargs['depend_files'] = depend_files
              kwargs['command'] = cmd
          else:
              depfile = kwargs['output'] + '.d'
              kwargs['depfile'] = depfile
              kwargs['command'] = copy.copy(cmd) + ['--dependency-file', '@DEPFILE@']
          target_c = GResourceTarget(name, state.subdir, state.subproject, kwargs)
  
          if gresource: # Only one target for .gresource files
              return ModuleReturnValue(target_c, [target_c])
  
          h_kwargs = {
              'command': cmd,
              'input': args[1],
              'output': args[0] + '.h',
              # The header doesn't actually care about the files yet it errors if missing
              'depends': depends
          }
          if 'build_by_default' in kwargs:
              h_kwargs['build_by_default'] = kwargs['build_by_default']
          if install_header:
              h_kwargs['install'] = install_header
              h_kwargs['install_dir'] = kwargs.get('install_dir',
                                                   state.environment.coredata.get_option(mesonlib.OptionKey('includedir')))
          target_h = GResourceHeaderTarget(args[0] + '_h', state.subdir, state.subproject, h_kwargs)
          rv = [target_c, target_h]
          return ModuleReturnValue(rv, rv)
  
      def _get_gresource_dependencies(self, state, input_file, source_dirs, dependencies):
  
          cmd = ['glib-compile-resources',
                 input_file,
                 '--generate-dependencies']
  
          # Prefer generated files over source files
          cmd += ['--sourcedir', state.subdir] # Current build dir
          for source_dir in source_dirs:
              cmd += ['--sourcedir', os.path.join(state.subdir, source_dir)]
  
          try:
              pc, stdout, stderr = Popen_safe(cmd, cwd=state.environment.get_source_dir())
          except (FileNotFoundError, PermissionError):
              raise MesonException('Could not execute glib-compile-resources.')
          if pc.returncode != 0:
              m = 'glib-compile-resources failed to get dependencies for {}:\n{}'
              mlog.warning(m.format(cmd[1], stderr))
              raise subprocess.CalledProcessError(pc.returncode, cmd)
  
          dep_files = stdout.split('\n')[:-1]
  
          depends = []
          subdirs = []
          for resfile in dep_files[:]:
              resbasename = os.path.basename(resfile)
              for dep in unholder(dependencies):
                  if isinstance(dep, mesonlib.File):
                      if dep.fname != resbasename:
                          continue
                      dep_files.remove(resfile)
                      dep_files.append(dep)
                      subdirs.append(dep.subdir)
                      break
                  elif isinstance(dep, (build.CustomTarget, build.CustomTargetIndex)):
                      fname = None
                      outputs = {(o, os.path.basename(o)) for o in dep.get_outputs()}
                      for o, baseo in outputs:
                          if baseo == resbasename:
                              fname = o
                              break
                      if fname is not None:
                          dep_files.remove(resfile)
                          depends.append(dep)
                          subdirs.append(dep.get_subdir())
                          break
              else:
                  # In generate-dependencies mode, glib-compile-resources doesn't raise
                  # an error for missing resources but instead prints whatever filename
                  # was listed in the input file.  That's good because it means we can
                  # handle resource files that get generated as part of the build, as
                  # follows.
                  #
                  # If there are multiple generated resource files with the same basename
                  # then this code will get confused.
                  try:
                      f = mesonlib.File.from_source_file(state.environment.get_source_dir(),
                                                         ".", resfile)
                  except MesonException:
                      raise MesonException(
                          'Resource "%s" listed in "%s" was not found. If this is a '
                          'generated file, pass the target that generates it to '
                          'gnome.compile_resources() using the "dependencies" '
                          'keyword argument.' % (resfile, input_file))
                  dep_files.remove(resfile)
                  dep_files.append(f)
          return dep_files, depends, subdirs
  
      def _get_link_args(self, state, lib, depends, include_rpath=False,
                         use_gir_args=False):
          link_command = []
          # Construct link args
          if isinstance(lib, build.SharedLibrary):
              libdir = os.path.join(state.environment.get_build_dir(), state.backend.get_target_dir(lib))
              link_command.append('-L' + libdir)
              if include_rpath:
                  link_command.append('-Wl,-rpath,' + libdir)
              depends.append(lib)
              # Needed for the following binutils bug:
              # https://github.com/mesonbuild/meson/issues/1911
              # However, g-ir-scanner does not understand -Wl,-rpath
              # so we need to use -L instead
              for d in state.backend.determine_rpath_dirs(lib):
                  d = os.path.join(state.environment.get_build_dir(), d)
                  link_command.append('-L' + d)
                  if include_rpath:
                      link_command.append('-Wl,-rpath,' + d)
          if use_gir_args and self._gir_has_option('--extra-library'):
              link_command.append('--extra-library=' + lib.name)
          else:
              link_command.append('-l' + lib.name)
          return link_command
  
      def _get_dependencies_flags(self, deps, state, depends, include_rpath=False,
                                  use_gir_args=False, separate_nodedup=False):
          cflags = OrderedSet()
          internal_ldflags = OrderedSet()
          external_ldflags = OrderedSet()
          # External linker flags that can't be de-duped reliably because they
          # require two args in order, such as -framework AVFoundation
          external_ldflags_nodedup = []
          gi_includes = OrderedSet()
          deps = mesonlib.unholder(mesonlib.listify(deps))
  
          for dep in deps:
              if isinstance(dep, Dependency):
                  girdir = dep.get_variable(pkgconfig='girdir', internal='girdir', default_value='')
                  if girdir:
                      gi_includes.update([girdir])
              if isinstance(dep, InternalDependency):
                  cflags.update(dep.get_compile_args())
                  cflags.update(state.get_include_args(dep.include_directories))
                  for lib in unholder(dep.libraries):
                      if isinstance(lib, build.SharedLibrary):
                          internal_ldflags.update(self._get_link_args(state, lib, depends, include_rpath))
                          libdepflags = self._get_dependencies_flags(lib.get_external_deps(), state, depends, include_rpath,
                                                                     use_gir_args, True)
                          cflags.update(libdepflags[0])
                          internal_ldflags.update(libdepflags[1])
                          external_ldflags.update(libdepflags[2])
                          external_ldflags_nodedup += libdepflags[3]
                          gi_includes.update(libdepflags[4])
                  extdepflags = self._get_dependencies_flags(dep.ext_deps, state, depends, include_rpath,
                                                             use_gir_args, True)
                  cflags.update(extdepflags[0])
                  internal_ldflags.update(extdepflags[1])
                  external_ldflags.update(extdepflags[2])
                  external_ldflags_nodedup += extdepflags[3]
                  gi_includes.update(extdepflags[4])
                  for source in unholder(dep.sources):
                      if isinstance(source, GirTarget):
                          gi_includes.update([os.path.join(state.environment.get_build_dir(),
                                              source.get_subdir())])
              # This should be any dependency other than an internal one.
              elif isinstance(dep, Dependency):
                  cflags.update(dep.get_compile_args())
                  ldflags = iter(dep.get_link_args(raw=True))
                  for lib in ldflags:
                      if (os.path.isabs(lib) and
                              # For PkgConfigDependency only:
                              getattr(dep, 'is_libtool', False)):
                          lib_dir = os.path.dirname(lib)
                          external_ldflags.update(["-L%s" % lib_dir])
                          if include_rpath:
                              external_ldflags.update([f'-Wl,-rpath {lib_dir}'])
                          libname = os.path.basename(lib)
                          if libname.startswith("lib"):
                              libname = libname[3:]
                          libname = libname.split(".so")[0]
                          lib = "-l%s" % libname
                      # FIXME: Hack to avoid passing some compiler options in
                      if lib.startswith("-W"):
                          continue
                      # If it's a framework arg, slurp the framework name too
                      # to preserve the order of arguments
                      if lib == '-framework':
                          external_ldflags_nodedup += [lib, next(ldflags)]
                      else:
                          external_ldflags.update([lib])
              elif isinstance(dep, (build.StaticLibrary, build.SharedLibrary)):
                  cflags.update(state.get_include_args(dep.get_include_dirs()))
                  depends.append(dep)
              else:
                  mlog.log(f'dependency {dep!r} not handled to build gir files')
                  continue
  
          if use_gir_args and self._gir_has_option('--extra-library'):
              def fix_ldflags(ldflags):
                  fixed_ldflags = OrderedSet()
                  for ldflag in ldflags:
                      if ldflag.startswith("-l"):
                          ldflag = ldflag.replace('-l', '--extra-library=', 1)
                      fixed_ldflags.add(ldflag)
                  return fixed_ldflags
              internal_ldflags = fix_ldflags(internal_ldflags)
              external_ldflags = fix_ldflags(external_ldflags)
          if not separate_nodedup:
              external_ldflags.update(external_ldflags_nodedup)
              return cflags, internal_ldflags, external_ldflags, gi_includes
          else:
              return cflags, internal_ldflags, external_ldflags, external_ldflags_nodedup, gi_includes
  
      def _unwrap_gir_target(self, girtarget, state):
          while hasattr(girtarget, 'held_object'):
              girtarget = girtarget.held_object
  
          if not isinstance(girtarget, (build.Executable, build.SharedLibrary,
                                        build.StaticLibrary)):
              raise MesonException('Gir target must be an executable or library')
  
          STATIC_BUILD_REQUIRED_VERSION = ">=1.58.1"
          if isinstance(girtarget, (build.StaticLibrary)) and \
             not mesonlib.version_compare(
                 self._get_gir_dep(state)[0].get_version(),
                 STATIC_BUILD_REQUIRED_VERSION):
              raise MesonException('Static libraries can only be introspected with GObject-Introspection ' + STATIC_BUILD_REQUIRED_VERSION)
  
          return girtarget
  
      def _devenv_append(self, varname: str, value: str) -> None:
          if self.devenv is None:
              self.devenv = build.EnvironmentVariables()
              self.interpreter.build.devenv.append(self.devenv)
          self.devenv.append(varname, [value])
  
      def _get_gir_dep(self, state):
          if not self.gir_dep:
              self.gir_dep = self._get_native_dep(state, 'gobject-introspection-1.0')
              self.giscanner = self._get_native_binary(state, 'g-ir-scanner', 'gobject-introspection-1.0', 'g_ir_scanner')
              self.gicompiler = self._get_native_binary(state, 'g-ir-compiler', 'gobject-introspection-1.0', 'g_ir_compiler')
          return self.gir_dep, self.giscanner, self.gicompiler
  
      @functools.lru_cache(maxsize=None)
      def _gir_has_option(self, option):
          exe = self.giscanner
          if hasattr(exe, 'held_object'):
              exe = exe.held_object
          if isinstance(exe, OverrideProgram):
              # Handle overridden g-ir-scanner
              assert option in ['--extra-library', '--sources-top-dirs']
              return True
          p, o, e = Popen_safe(exe.get_command() + ['--help'], stderr=subprocess.STDOUT)
          return p.returncode == 0 and option in o
  
      def _scan_header(self, kwargs):
          ret = []
          header = kwargs.pop('header', None)
          if header:
              if not isinstance(header, str):
                  raise MesonException('header must be a string')
              ret = ['--c-include=' + header]
          return ret
  
      def _scan_extra_args(self, kwargs):
          return mesonlib.stringlistify(kwargs.pop('extra_args', []))
  
      def _scan_link_withs(self, state, depends, kwargs):
          ret = []
          if 'link_with' in kwargs:
              link_with = mesonlib.extract_as_list(kwargs, 'link_with', pop = True)
  
              for link in link_with:
                  ret += self._get_link_args(state, link.held_object, depends,
                                             use_gir_args=True)
          return ret
  
      # May mutate depends and gir_inc_dirs
      def _scan_include(self, state, depends, gir_inc_dirs, kwargs):
          ret = []
  
          if 'includes' in kwargs:
              includes = mesonlib.extract_as_list(kwargs, 'includes', pop = True)
              for inc in unholder(includes):
                  if isinstance(inc, str):
                      ret += [f'--include={inc}']
                  elif isinstance(inc, GirTarget):
                      gir_inc_dirs += [
                          os.path.join(state.environment.get_build_dir(),
                                       inc.get_subdir()),
                      ]
                      ret += [
                          "--include-uninstalled={}".format(os.path.join(inc.get_subdir(), inc.get_basename()))
                      ]
                      depends += [inc]
                  else:
                      raise MesonException(
                          'Gir includes must be str, GirTarget, or list of them. '
                          'Got %s.' % type(inc).__name__)
  
          return ret
  
      def _scan_symbol_prefix(self, kwargs):
          ret = []
  
          if 'symbol_prefix' in kwargs:
              sym_prefixes = mesonlib.stringlistify(kwargs.pop('symbol_prefix', []))
              ret += ['--symbol-prefix=%s' % sym_prefix for sym_prefix in sym_prefixes]
  
          return ret
  
      def _scan_identifier_prefix(self, kwargs):
          ret = []
  
          if 'identifier_prefix' in kwargs:
              identifier_prefix = kwargs.pop('identifier_prefix')
              if not isinstance(identifier_prefix, str):
                  raise MesonException('Gir identifier prefix must be str')
              ret += ['--identifier-prefix=%s' % identifier_prefix]
  
          return ret
  
      def _scan_export_packages(self, kwargs):
          ret = []
  
          if 'export_packages' in kwargs:
              pkgs = kwargs.pop('export_packages')
              if isinstance(pkgs, str):
                  ret += ['--pkg-export=%s' % pkgs]
              elif isinstance(pkgs, list):
                  ret += ['--pkg-export=%s' % pkg for pkg in pkgs]
              else:
                  raise MesonException('Gir export packages must be str or list')
  
          return ret
  
      def _scan_inc_dirs(self, kwargs):
          ret = mesonlib.extract_as_list(kwargs, 'include_directories', pop = True)
          for incd in ret:
              if not isinstance(incd.held_object, (str, build.IncludeDirs)):
                  raise MesonException(
                      'Gir include dirs should be include_directories().')
          return ret
  
      def _scan_langs(self, state, langs):
          ret = []
  
          for lang in langs:
              link_args = state.environment.coredata.get_external_link_args(MachineChoice.HOST, lang)
              for link_arg in link_args:
                  if link_arg.startswith('-L'):
                      ret.append(link_arg)
  
          return ret
  
      def _scan_gir_targets(self, state, girtargets):
          ret = []
  
          for girtarget in girtargets:
              if isinstance(girtarget, build.Executable):
                  ret += ['--program', girtarget]
              else:
                  # Because of https://gitlab.gnome.org/GNOME/gobject-introspection/merge_requests/72
                  # we can't use the full path until this is merged.
                  libpath = os.path.join(girtarget.get_subdir(), girtarget.get_filename())
                  if isinstance(girtarget, build.SharedLibrary):
                      # need to put our output directory first as we need to use the
                      # generated libraries instead of any possibly installed system/prefix
                      # ones.
                      ret += ["-L@BUILD_ROOT@/{}".format(os.path.dirname(libpath))]
                      libname = girtarget.get_basename()
                  else:
                      libname = os.path.join(f"@BUILD_ROOT@/{libpath}")
                  ret += ['--library', libname]
                  # Needed for the following binutils bug:
                  # https://github.com/mesonbuild/meson/issues/1911
                  # However, g-ir-scanner does not understand -Wl,-rpath
                  # so we need to use -L instead
                  for d in state.backend.determine_rpath_dirs(girtarget):
                      d = os.path.join(state.environment.get_build_dir(), d)
                      ret.append('-L' + d)
  
          return ret
  
      def _get_girtargets_langs_compilers(self, girtargets: T.List[GirTarget]) -> T.List[T.Tuple[str, 'Compiler']]:
          ret: T.List[T.Tuple[str, 'Compiler']] = []
          for girtarget in girtargets:
              for lang, compiler in girtarget.compilers.items():
                  # XXX: Can you use g-i with any other language?
                  if lang in ('c', 'cpp', 'objc', 'objcpp', 'd'):
                      ret.append((lang, compiler))
                      break
  
          return ret
  
      def _get_gir_targets_deps(self, girtargets):
          ret = []
          for girtarget in girtargets:
              ret += girtarget.get_all_link_deps()
              ret += girtarget.get_external_deps()
          return ret
  
      def _get_gir_targets_inc_dirs(self, girtargets):
          ret = []
          for girtarget in girtargets:
              ret += girtarget.get_include_dirs()
          return ret
  
      def _get_langs_compilers_flags(self, state, langs_compilers: T.List[T.Tuple[str, 'Compiler']]):
          cflags = []
          internal_ldflags = []
          external_ldflags = []
  
          for lang, compiler in langs_compilers:
              if state.global_args.get(lang):
                  cflags += state.global_args[lang]
              if state.project_args.get(lang):
                  cflags += state.project_args[lang]
              if mesonlib.OptionKey('b_sanitize') in compiler.base_options:
                  sanitize = state.environment.coredata.options[mesonlib.OptionKey('b_sanitize')].value
                  cflags += compiler.sanitizer_compile_args(sanitize)
                  sanitize = sanitize.split(',')
                  # These must be first in ldflags
                  if 'address' in sanitize:
                      internal_ldflags += ['-lasan']
                  if 'thread' in sanitize:
                      internal_ldflags += ['-ltsan']
                  if 'undefined' in sanitize:
                      internal_ldflags += ['-lubsan']
                  # FIXME: Linking directly to lib*san is not recommended but g-ir-scanner
                  # does not understand -f LDFLAGS. https://bugzilla.gnome.org/show_bug.cgi?id=783892
                  # ldflags += compiler.sanitizer_link_args(sanitize)
  
          return cflags, internal_ldflags, external_ldflags
  
      def _make_gir_filelist(self, state, srcdir, ns, nsversion, girtargets, libsources):
          gir_filelist_dir = state.backend.get_target_private_dir_abs(girtargets[0])
          if not os.path.isdir(gir_filelist_dir):
              os.mkdir(gir_filelist_dir)
          gir_filelist_filename = os.path.join(gir_filelist_dir, f'{ns}_{nsversion}_gir_filelist')
  
          with open(gir_filelist_filename, 'w', encoding='utf-8') as gir_filelist:
              for s in unholder(libsources):
                  if isinstance(s, (build.CustomTarget, build.CustomTargetIndex)):
                      for custom_output in s.get_outputs():
                          gir_filelist.write(os.path.join(state.environment.get_build_dir(),
                                                          state.backend.get_target_dir(s),
                                                          custom_output) + '\n')
                  elif isinstance(s, mesonlib.File):
                      gir_filelist.write(s.rel_to_builddir(state.build_to_src) + '\n')
                  elif isinstance(s, build.GeneratedList):
                      for gen_src in s.get_outputs():
                          gir_filelist.write(os.path.join(srcdir, gen_src) + '\n')
                  else:
                      gir_filelist.write(os.path.join(srcdir, s) + '\n')
  
          return gir_filelist_filename
  
      def _make_gir_target(self, state, girfile, scan_command, depends, kwargs):
          scankwargs = {'output': girfile,
                        'command': scan_command,
                        'depends': depends}
  
          if 'install' in kwargs:
              scankwargs['install'] = kwargs['install']
              scankwargs['install_dir'] = kwargs.get('install_dir_gir',
                                                     os.path.join(state.environment.get_datadir(), 'gir-1.0'))
  
          if 'build_by_default' in kwargs:
              scankwargs['build_by_default'] = kwargs['build_by_default']
  
          return GirTarget(girfile, state.subdir, state.subproject, scankwargs)
  
      def _make_typelib_target(self, state, typelib_output, typelib_cmd, kwargs):
          typelib_kwargs = {
              'output': typelib_output,
              'command': typelib_cmd,
          }
  
          if 'install' in kwargs:
              typelib_kwargs['install'] = kwargs['install']
              typelib_kwargs['install_dir'] = kwargs.get('install_dir_typelib',
                                                         os.path.join(state.environment.get_libdir(), 'girepository-1.0'))
  
          if 'build_by_default' in kwargs:
              typelib_kwargs['build_by_default'] = kwargs['build_by_default']
  
          return TypelibTarget(typelib_output, state.subdir, state.subproject, typelib_kwargs)
  
      # May mutate depends
      def _gather_typelib_includes_and_update_depends(self, state, deps, depends):
          # Need to recursively add deps on GirTarget sources from our
          # dependencies and also find the include directories needed for the
          # typelib generation custom target below.
          typelib_includes = []
          for dep in unholder(deps):
              # Add a dependency on each GirTarget listed in dependencies and add
              # the directory where it will be generated to the typelib includes
              if isinstance(dep, InternalDependency):
                  for source in unholder(dep.sources):
                      if isinstance(source, GirTarget) and source not in depends:
                          depends.append(source)
                          subdir = os.path.join(state.environment.get_build_dir(),
                                                source.get_subdir())
                          if subdir not in typelib_includes:
                              typelib_includes.append(subdir)
              # Do the same, but for dependencies of dependencies. These are
              # stored in the list of generated sources for each link dep (from
              # girtarget.get_all_link_deps() above).
              # FIXME: Store this in the original form from declare_dependency()
              # so it can be used here directly.
              elif isinstance(dep, build.SharedLibrary):
                  for source in dep.generated:
                      if isinstance(source, GirTarget):
                          subdir = os.path.join(state.environment.get_build_dir(),
                                                source.get_subdir())
                          if subdir not in typelib_includes:
                              typelib_includes.append(subdir)
              if isinstance(dep, Dependency):
                  girdir = dep.get_variable(pkgconfig='girdir', internal='girdir', default_value='')
                  if girdir and girdir not in typelib_includes:
                      typelib_includes.append(girdir)
          return typelib_includes
  
      def _get_external_args_for_langs(self, state, langs):
          ret = []
          for lang in langs:
              ret += state.environment.coredata.get_external_args(MachineChoice.HOST, lang)
          return ret
  
      @staticmethod
      def _get_scanner_cflags(cflags):
          'g-ir-scanner only accepts -I/-D/-U; must ignore all other flags'
          for f in cflags:
              if f.startswith(('-D', '-U', '-I')):
                  yield f
  
      @staticmethod
      def _get_scanner_ldflags(ldflags):
          'g-ir-scanner only accepts -L/-l; must ignore -F and other linker flags'
          for f in ldflags:
              if f.startswith(('-L', '-l', '--extra-library')):
                  yield f
  
      @FeatureNewKwargs('generate_gir', '0.55.0', ['fatal_warnings'])
      @FeatureNewKwargs('generate_gir', '0.40.0', ['build_by_default'])
      @permittedKwargs({'sources', 'nsversion', 'namespace', 'symbol_prefix', 'identifier_prefix',
                        'export_packages', 'includes', 'dependencies', 'link_with', 'include_directories',
                        'install', 'install_dir_gir', 'install_dir_typelib', 'extra_args',
                        'packages', 'header', 'build_by_default', 'fatal_warnings'})
      def generate_gir(self, state, args, kwargs):
          if not args:
              raise MesonException('generate_gir takes at least one argument')
          if kwargs.get('install_dir'):
              raise MesonException('install_dir is not supported with generate_gir(), see "install_dir_gir" and "install_dir_typelib"')
  
          girtargets = [self._unwrap_gir_target(arg, state) for arg in args]
  
          if len(girtargets) > 1 and any([isinstance(el, build.Executable) for el in girtargets]):
              raise MesonException('generate_gir only accepts a single argument when one of the arguments is an executable')
  
          gir_dep, giscanner, gicompiler = self._get_gir_dep(state)
  
          ns = kwargs.get('namespace')
          if not ns:
              raise MesonException('Missing "namespace" keyword argument')
          nsversion = kwargs.get('nsversion')
          if not nsversion:
              raise MesonException('Missing "nsversion" keyword argument')
          libsources = mesonlib.extract_as_list(kwargs, 'sources', pop=True)
          girfile = f'{ns}-{nsversion}.gir'
          srcdir = os.path.join(state.environment.get_source_dir(), state.subdir)
          builddir = os.path.join(state.environment.get_build_dir(), state.subdir)
          depends = gir_dep.sources + girtargets
          gir_inc_dirs = []
          langs_compilers = self._get_girtargets_langs_compilers(girtargets)
          cflags, internal_ldflags, external_ldflags = self._get_langs_compilers_flags(state, langs_compilers)
          deps = self._get_gir_targets_deps(girtargets)
          deps += mesonlib.unholder(extract_as_list(kwargs, 'dependencies', pop=True))
          deps += [gir_dep]
          typelib_includes = self._gather_typelib_includes_and_update_depends(state, deps, depends)
          # ldflags will be misinterpreted by gir scanner (showing
          # spurious dependencies) but building GStreamer fails if they
          # are not used here.
          dep_cflags, dep_internal_ldflags, dep_external_ldflags, gi_includes = \
              self._get_dependencies_flags(deps, state, depends, use_gir_args=True)
          cflags += list(self._get_scanner_cflags(dep_cflags))
          cflags += list(self._get_scanner_cflags(self._get_external_args_for_langs(state, [lc[0] for lc in langs_compilers])))
          internal_ldflags += list(self._get_scanner_ldflags(dep_internal_ldflags))
          external_ldflags += list(self._get_scanner_ldflags(dep_external_ldflags))
          girtargets_inc_dirs = self._get_gir_targets_inc_dirs(girtargets)
          inc_dirs = self._scan_inc_dirs(kwargs)
  
          scan_command = [giscanner]
          scan_command += ['--no-libtool']
          scan_command += ['--namespace=' + ns, '--nsversion=' + nsversion]
          scan_command += ['--warn-all']
          scan_command += ['--output', '@OUTPUT@']
          scan_command += self._scan_header(kwargs)
          scan_command += self._scan_extra_args(kwargs)
          scan_command += ['-I' + srcdir, '-I' + builddir]
          scan_command += state.get_include_args(girtargets_inc_dirs)
          scan_command += ['--filelist=' + self._make_gir_filelist(state, srcdir, ns, nsversion, girtargets, libsources)]
          scan_command += self._scan_link_withs(state, depends, kwargs)
          scan_command += self._scan_include(state, depends, gir_inc_dirs, kwargs)
          scan_command += self._scan_symbol_prefix(kwargs)
          scan_command += self._scan_identifier_prefix(kwargs)
          scan_command += self._scan_export_packages(kwargs)
          scan_command += ['--cflags-begin']
          scan_command += cflags
          scan_command += ['--cflags-end']
          scan_command += state.get_include_args(inc_dirs)
          scan_command += state.get_include_args(list(gi_includes) + gir_inc_dirs + inc_dirs, prefix='--add-include-path=')
          scan_command += list(internal_ldflags)
          scan_command += self._scan_gir_targets(state, girtargets)
          scan_command += self._scan_langs(state, [lc[0] for lc in langs_compilers])
          scan_command += list(external_ldflags)
  
          if self._gir_has_option('--sources-top-dirs'):
              scan_command += ['--sources-top-dirs', os.path.join(state.environment.get_source_dir(), self.interpreter.subproject_dir, state.subproject)]
              scan_command += ['--sources-top-dirs', os.path.join(state.environment.get_build_dir(), self.interpreter.subproject_dir, state.subproject)]
  
          if '--warn-error' in scan_command:
              mlog.deprecation('Passing --warn-error is deprecated in favor of "fatal_warnings" keyword argument since v0.55')
          fatal_warnings = kwargs.get('fatal_warnings', False)
          if not isinstance(fatal_warnings, bool):
              raise MesonException('fatal_warnings keyword argument must be a boolean')
          if fatal_warnings:
              scan_command.append('--warn-error')
  
          scan_target = self._make_gir_target(state, girfile, scan_command, depends, kwargs)
  
          typelib_output = f'{ns}-{nsversion}.typelib'
          typelib_cmd = [gicompiler, scan_target, '--output', '@OUTPUT@']
          typelib_cmd += state.get_include_args(gir_inc_dirs, prefix='--includedir=')
  
          for incdir in typelib_includes:
              typelib_cmd += ["--includedir=" + incdir]
  
          typelib_target = self._make_typelib_target(state, typelib_output, typelib_cmd, kwargs)
          self._devenv_append('GI_TYPELIB_PATH', os.path.join(state.environment.get_build_dir(), state.subdir))
  
          rv = [scan_target, typelib_target]
  
          return ModuleReturnValue(rv, rv)
  
      @FeatureNewKwargs('build target', '0.40.0', ['build_by_default'])
      @permittedKwargs({'build_by_default', 'depend_files'})
      def compile_schemas(self, state, args, kwargs):
          if args:
              raise MesonException('Compile_schemas does not take positional arguments.')
          srcdir = os.path.join(state.build_to_src, state.subdir)
          outdir = state.subdir
  
          cmd = [self.interpreter.find_program_impl('glib-compile-schemas')]
          cmd += ['--targetdir', outdir, srcdir]
          kwargs['command'] = cmd
          kwargs['input'] = []
          kwargs['output'] = 'gschemas.compiled'
          if state.subdir == '':
              targetname = 'gsettings-compile'
          else:
              targetname = 'gsettings-compile-' + state.subdir.replace('/', '_')
          target_g = build.CustomTarget(targetname, state.subdir, state.subproject, kwargs)
          return ModuleReturnValue(target_g, [target_g])
  
      @permittedKwargs({'sources', 'media', 'symlink_media', 'languages'})
      @FeatureDeprecatedKwargs('gnome.yelp', '0.43.0', ['languages'],
                               'Use a LINGUAS file in the source directory instead')
      def yelp(self, state, args, kwargs):
          if len(args) < 1:
              raise MesonException('Yelp requires a project id')
  
          project_id = args[0]
          sources = mesonlib.stringlistify(kwargs.pop('sources', []))
          if not sources:
              if len(args) > 1:
                  sources = mesonlib.stringlistify(args[1:])
              if not sources:
                  raise MesonException('Yelp requires a list of sources')
          source_str = '@@'.join(sources)
  
          langs = mesonlib.stringlistify(kwargs.pop('languages', []))
          media = mesonlib.stringlistify(kwargs.pop('media', []))
          symlinks = kwargs.pop('symlink_media', True)
  
          if not isinstance(symlinks, bool):
              raise MesonException('symlink_media must be a boolean')
  
          if kwargs:
              raise MesonException('Unknown arguments passed: {}'.format(', '.join(kwargs.keys())))
  
          script = state.environment.get_build_command()
          args = ['--internal',
                  'yelphelper',
                  'install',
                  '--subdir=' + state.subdir,
                  '--id=' + project_id,
                  '--installdir=' + os.path.join(state.environment.get_datadir(), 'help'),
                  '--sources=' + source_str]
          if symlinks:
              args.append('--symlinks=true')
          if media:
              args.append('--media=' + '@@'.join(media))
          if langs:
              args.append('--langs=' + '@@'.join(langs))
          inscript = state.backend.get_executable_serialisation(script + args)
  
          potargs = state.environment.get_build_command() + [
              '--internal', 'yelphelper', 'pot',
              '--subdir=' + state.subdir,
              '--id=' + project_id,
              '--sources=' + source_str,
          ]
          pottarget = build.RunTarget('help-' + project_id + '-pot', potargs,
                                      [], state.subdir, state.subproject)
  
          poargs = state.environment.get_build_command() + [
              '--internal', 'yelphelper', 'update-po',
              '--subdir=' + state.subdir,
              '--id=' + project_id,
              '--sources=' + source_str,
              '--langs=' + '@@'.join(langs),
          ]
          potarget = build.RunTarget('help-' + project_id + '-update-po', poargs,
                                     [], state.subdir, state.subproject)
  
          rv = [inscript, pottarget, potarget]
          return ModuleReturnValue(None, rv)
  
      @FeatureNewKwargs('gnome.gtkdoc', '0.52.0', ['check'])
      @FeatureNewKwargs('gnome.gtkdoc', '0.48.0', ['c_args'])
      @FeatureNewKwargs('gnome.gtkdoc', '0.48.0', ['module_version'])
      @FeatureNewKwargs('gnome.gtkdoc', '0.37.0', ['namespace', 'mode'])
      @permittedKwargs({'main_xml', 'main_sgml', 'src_dir', 'dependencies', 'install',
                        'install_dir', 'scan_args', 'scanobjs_args', 'gobject_typesfile',
                        'fixxref_args', 'html_args', 'html_assets', 'content_files',
                        'mkdb_args', 'ignore_headers', 'include_directories',
                        'namespace', 'mode', 'expand_content_files', 'module_version',
                        'c_args', 'check'})
      def gtkdoc(self, state, args, kwargs):
          if len(args) != 1:
              raise MesonException('Gtkdoc must have one positional argument.')
          modulename = args[0]
          if not isinstance(modulename, str):
              raise MesonException('Gtkdoc arg must be string.')
          if 'src_dir' not in kwargs:
              raise MesonException('Keyword argument src_dir missing.')
          main_file = kwargs.get('main_sgml', '')
          if not isinstance(main_file, str):
              raise MesonException('Main sgml keyword argument must be a string.')
          main_xml = kwargs.get('main_xml', '')
          if not isinstance(main_xml, str):
              raise MesonException('Main xml keyword argument must be a string.')
          moduleversion = kwargs.get('module_version', '')
          if not isinstance(moduleversion, str):
              raise MesonException('Module version keyword argument must be a string.')
          if main_xml != '':
              if main_file != '':
                  raise MesonException('You can only specify main_xml or main_sgml, not both.')
              main_file = main_xml
          targetname = modulename + ('-' + moduleversion if moduleversion else '') + '-doc'
          command = state.environment.get_build_command()
  
          namespace = kwargs.get('namespace', '')
          mode = kwargs.get('mode', 'auto')
          VALID_MODES = ('xml', 'sgml', 'none', 'auto')
          if mode not in VALID_MODES:
              raise MesonException(f'gtkdoc: Mode {mode} is not a valid mode: {VALID_MODES}')
  
          src_dirs = mesonlib.extract_as_list(kwargs, 'src_dir')
          header_dirs = []
          for src_dir in src_dirs:
              if hasattr(src_dir, 'held_object'):
                  src_dir = src_dir.held_object
                  if not isinstance(src_dir, build.IncludeDirs):
                      raise MesonException('Invalid keyword argument for src_dir.')
                  for inc_dir in src_dir.get_incdirs():
                      header_dirs.append(os.path.join(state.environment.get_source_dir(),
                                                      src_dir.get_curdir(), inc_dir))
                      header_dirs.append(os.path.join(state.environment.get_build_dir(),
                                                      src_dir.get_curdir(), inc_dir))
              else:
                  header_dirs.append(src_dir)
  
          args = ['--internal', 'gtkdoc',
                  '--sourcedir=' + state.environment.get_source_dir(),
                  '--builddir=' + state.environment.get_build_dir(),
                  '--subdir=' + state.subdir,
                  '--headerdirs=' + '@@'.join(header_dirs),
                  '--mainfile=' + main_file,
                  '--modulename=' + modulename,
                  '--moduleversion=' + moduleversion,
                  '--mode=' + mode]
          for tool in ['scan', 'scangobj', 'mkdb', 'mkhtml', 'fixxref']:
              program_name = 'gtkdoc-' + tool
              program = self.interpreter.find_program_impl(program_name)
              path = program.held_object.get_path()
              args.append(f'--{program_name}={path}')
          if namespace:
              args.append('--namespace=' + namespace)
          args += self._unpack_args('--htmlargs=', 'html_args', kwargs)
          args += self._unpack_args('--scanargs=', 'scan_args', kwargs)
          args += self._unpack_args('--scanobjsargs=', 'scanobjs_args', kwargs)
          args += self._unpack_args('--gobjects-types-file=', 'gobject_typesfile', kwargs, state)
          args += self._unpack_args('--fixxrefargs=', 'fixxref_args', kwargs)
          args += self._unpack_args('--mkdbargs=', 'mkdb_args', kwargs)
          args += self._unpack_args('--html-assets=', 'html_assets', kwargs, state)
  
          depends = []
          content_files = []
          for s in unholder(mesonlib.extract_as_list(kwargs, 'content_files')):
              if isinstance(s, (build.CustomTarget, build.CustomTargetIndex)):
                  depends.append(s)
                  for o in s.get_outputs():
                      content_files.append(os.path.join(state.environment.get_build_dir(),
                                                        state.backend.get_target_dir(s),
                                                        o))
              elif isinstance(s, mesonlib.File):
                  content_files.append(s.absolute_path(state.environment.get_source_dir(),
                                                       state.environment.get_build_dir()))
              elif isinstance(s, build.GeneratedList):
                  depends.append(s)
                  for gen_src in s.get_outputs():
                      content_files.append(os.path.join(state.environment.get_source_dir(),
                                                        state.subdir,
                                                        gen_src))
              elif isinstance(s, str):
                  content_files.append(os.path.join(state.environment.get_source_dir(),
                                                    state.subdir,
                                                    s))
              else:
                  raise MesonException(
                      f'Invalid object type: {s.__class__.__name__!r}')
          args += ['--content-files=' + '@@'.join(content_files)]
  
          args += self._unpack_args('--expand-content-files=', 'expand_content_files', kwargs, state)
          args += self._unpack_args('--ignore-headers=', 'ignore_headers', kwargs)
          args += self._unpack_args('--installdir=', 'install_dir', kwargs)
          args += self._get_build_args(kwargs, state, depends)
          custom_kwargs = {'output': modulename + '-decl.txt',
                           'command': command + args,
                           'depends': depends,
                           'build_always_stale': True,
                           }
          custom_target = build.CustomTarget(targetname, state.subdir, state.subproject, custom_kwargs)
          alias_target = build.AliasTarget(targetname, [custom_target], state.subdir, state.subproject)
          if kwargs.get('check', False):
              check_cmd = self.interpreter.find_program_impl('gtkdoc-check')
              check_env = ['DOC_MODULE=' + modulename,
                           'DOC_MAIN_SGML_FILE=' + main_file]
              check_args = [targetname + '-check', check_cmd]
              check_kwargs = {'env': check_env,
                              'workdir': os.path.join(state.environment.get_build_dir(), state.subdir),
                              'depends': custom_target}
              self.interpreter.add_test(state.current_node, check_args, check_kwargs, True)
          res = [custom_target, alias_target]
          if kwargs.get('install', True):
              res.append(state.backend.get_executable_serialisation(command + args))
          return ModuleReturnValue(custom_target, res)
  
      def _get_build_args(self, kwargs, state, depends):
          args = []
          deps = mesonlib.unholder(extract_as_list(kwargs, 'dependencies'))
          cflags = []
          cflags.extend(mesonlib.stringlistify(kwargs.pop('c_args', [])))
          deps_cflags, internal_ldflags, external_ldflags, gi_includes = \
              self._get_dependencies_flags(deps, state, depends, include_rpath=True)
          inc_dirs = mesonlib.extract_as_list(kwargs, 'include_directories')
          for incd in inc_dirs:
              if not isinstance(incd.held_object, (str, build.IncludeDirs)):
                  raise MesonException(
                      'Gir include dirs should be include_directories().')
  
          cflags.extend(deps_cflags)
          cflags.extend(state.get_include_args(inc_dirs))
          ldflags = []
          ldflags.extend(internal_ldflags)
          ldflags.extend(external_ldflags)
  
          cflags.extend(state.environment.coredata.get_external_args(MachineChoice.HOST, 'c'))
          ldflags.extend(state.environment.coredata.get_external_link_args(MachineChoice.HOST, 'c'))
          compiler = state.environment.coredata.compilers[MachineChoice.HOST]['c']
  
          compiler_flags = self._get_langs_compilers_flags(state, [('c', compiler)])
          cflags.extend(compiler_flags[0])
          ldflags.extend(compiler_flags[1])
          ldflags.extend(compiler_flags[2])
          if compiler:
              args += ['--cc=%s' % join_args(compiler.get_exelist())]
              args += ['--ld=%s' % join_args(compiler.get_linker_exelist())]
          if cflags:
              args += ['--cflags=%s' % join_args(cflags)]
          if ldflags:
              args += ['--ldflags=%s' % join_args(ldflags)]
  
          return args
  
      @noKwargs
      def gtkdoc_html_dir(self, state, args, kwargs):
          if len(args) != 1:
              raise MesonException('Must have exactly one argument.')
          modulename = args[0]
          if not isinstance(modulename, str):
              raise MesonException('Argument must be a string')
          return ModuleReturnValue(os.path.join('share/gtk-doc/html', modulename), [])
  
      @staticmethod
      def _unpack_args(arg, kwarg_name, kwargs, expend_file_state=None):
          if kwarg_name not in kwargs:
              return []
  
          new_args = mesonlib.extract_as_list(kwargs, kwarg_name)
          args = []
          for i in new_args:
              if expend_file_state and isinstance(i, mesonlib.File):
                  i = i.absolute_path(expend_file_state.environment.get_source_dir(), expend_file_state.environment.get_build_dir())
              elif expend_file_state and isinstance(i, str):
                  i = os.path.join(expend_file_state.environment.get_source_dir(), expend_file_state.subdir, i)
              elif not isinstance(i, str):
                  raise MesonException(kwarg_name + ' values must be strings.')
              args.append(i)
  
          if args:
              return [arg + '@@'.join(args)]
  
          return []
  
      def _get_autocleanup_args(self, kwargs, glib_version):
          if not mesonlib.version_compare(glib_version, '>= 2.49.1'):
              # Warn if requested, silently disable if not
              if 'autocleanup' in kwargs:
                  mlog.warning('Glib version ({}) is too old to support the \'autocleanup\' '
                               'kwarg, need 2.49.1 or newer'.format(glib_version))
              return []
          autocleanup = kwargs.pop('autocleanup', 'all')
          values = ('none', 'objects', 'all')
          if autocleanup not in values:
              raise MesonException('gdbus_codegen does not support {!r} as an autocleanup value, '
                                   'must be one of: {!r}'.format(autocleanup, ', '.join(values)))
          return ['--c-generate-autocleanup', autocleanup]
  
      @FeatureNewKwargs('build target', '0.46.0', ['install_header', 'install_dir', 'sources'])
      @FeatureNewKwargs('build target', '0.40.0', ['build_by_default'])
      @FeatureNewKwargs('build target', '0.47.0', ['extra_args', 'autocleanup'])
      @permittedKwargs({'interface_prefix', 'namespace', 'extra_args', 'autocleanup', 'object_manager', 'build_by_default',
                        'annotations', 'docbook', 'install_header', 'install_dir', 'sources'})
      def gdbus_codegen(self, state, args, kwargs):
          if len(args) not in (1, 2):
              raise MesonException('gdbus_codegen takes at most two arguments, name and xml file.')
          namebase = args[0]
          xml_files = args[1:]
          cmd = [self.interpreter.find_program_impl('gdbus-codegen')]
          extra_args = mesonlib.stringlistify(kwargs.pop('extra_args', []))
          cmd += extra_args
          # Autocleanup supported?
          glib_version = self._get_native_glib_version(state)
          cmd += self._get_autocleanup_args(kwargs, glib_version)
          if 'interface_prefix' in kwargs:
              cmd += ['--interface-prefix', kwargs.pop('interface_prefix')]
          if 'namespace' in kwargs:
              cmd += ['--c-namespace', kwargs.pop('namespace')]
          if kwargs.get('object_manager', False):
              cmd += ['--c-generate-object-manager']
          if 'sources' in kwargs:
              xml_files += mesonlib.listify(kwargs.pop('sources'))
          build_by_default = kwargs.get('build_by_default', False)
  
          # Annotations are a bit ugly in that they are a list of lists of strings...
          annotations = kwargs.pop('annotations', [])
          if not isinstance(annotations, list):
              raise MesonException('annotations takes a list')
          if annotations and isinstance(annotations, list) and not isinstance(annotations[0], list):
              annotations = [annotations]
  
          for annotation in annotations:
              if len(annotation) != 3 or not all(isinstance(i, str) for i in annotation):
                  raise MesonException('Annotations must be made up of 3 strings for ELEMENT, KEY, and VALUE')
              cmd += ['--annotate'] + annotation
  
          targets = []
          install_header = kwargs.get('install_header', False)
          install_dir = kwargs.get('install_dir', state.environment.coredata.get_option(mesonlib.OptionKey('includedir')))
  
          output = namebase + '.c'
          # Added in https://gitlab.gnome.org/GNOME/glib/commit/e4d68c7b3e8b01ab1a4231bf6da21d045cb5a816 (2.55.2)
          # Fixed in https://gitlab.gnome.org/GNOME/glib/commit/cd1f82d8fc741a2203582c12cc21b4dacf7e1872 (2.56.2)
          if mesonlib.version_compare(glib_version, '>= 2.56.2'):
              custom_kwargs = {'input': xml_files,
                               'output': output,
                               'command': cmd + ['--body', '--output', '@OUTPUT@', '@INPUT@'],
                               'build_by_default': build_by_default
                               }
          else:
              if 'docbook' in kwargs:
                  docbook = kwargs['docbook']
                  if not isinstance(docbook, str):
                      raise MesonException('docbook value must be a string.')
  
                  cmd += ['--generate-docbook', docbook]
  
              # https://git.gnome.org/browse/glib/commit/?id=ee09bb704fe9ccb24d92dd86696a0e6bb8f0dc1a
              if mesonlib.version_compare(glib_version, '>= 2.51.3'):
                  cmd += ['--output-directory', '@OUTDIR@', '--generate-c-code', namebase, '@INPUT@']
              else:
                  self._print_gdbus_warning()
                  cmd += ['--generate-c-code', '@OUTDIR@/' + namebase, '@INPUT@']
  
              custom_kwargs = {'input': xml_files,
                               'output': output,
                               'command': cmd,
                               'build_by_default': build_by_default
                               }
  
          cfile_custom_target = build.CustomTarget(output, state.subdir, state.subproject, custom_kwargs)
          targets.append(cfile_custom_target)
  
          output = namebase + '.h'
          if mesonlib.version_compare(glib_version, '>= 2.56.2'):
              custom_kwargs = {'input': xml_files,
                               'output': output,
                               'command': cmd + ['--header', '--output', '@OUTPUT@', '@INPUT@'],
                               'build_by_default': build_by_default,
                               'install': install_header,
                               'install_dir': install_dir
                               }
          else:
              custom_kwargs = {'input': xml_files,
                               'output': output,
                               'command': cmd,
                               'build_by_default': build_by_default,
                               'install': install_header,
                               'install_dir': install_dir,
                               'depends': cfile_custom_target
                               }
  
          hfile_custom_target = build.CustomTarget(output, state.subdir, state.subproject, custom_kwargs)
          targets.append(hfile_custom_target)
  
          if 'docbook' in kwargs:
              docbook = kwargs['docbook']
              if not isinstance(docbook, str):
                  raise MesonException('docbook value must be a string.')
  
              docbook_cmd = cmd + ['--output-directory', '@OUTDIR@', '--generate-docbook', docbook, '@INPUT@']
  
              # The docbook output is always ${docbook}-${name_of_xml_file}
              output = namebase + '-docbook'
              outputs = []
              for f in xml_files:
                  outputs.append('{}-{}'.format(docbook, os.path.basename(str(f))))
  
              if mesonlib.version_compare(glib_version, '>= 2.56.2'):
                  custom_kwargs = {'input': xml_files,
                                   'output': outputs,
                                   'command': docbook_cmd,
                                   'build_by_default': build_by_default
                                   }
              else:
                  custom_kwargs = {'input': xml_files,
                                   'output': outputs,
                                   'command': cmd,
                                   'build_by_default': build_by_default,
                                   'depends': cfile_custom_target
                                   }
  
              docbook_custom_target = build.CustomTarget(output, state.subdir, state.subproject, custom_kwargs)
              targets.append(docbook_custom_target)
  
          return ModuleReturnValue(targets, targets)
  
      @permittedKwargs({'sources', 'c_template', 'h_template', 'install_header', 'install_dir',
                        'comments', 'identifier_prefix', 'symbol_prefix', 'eprod', 'vprod',
                        'fhead', 'fprod', 'ftail', 'vhead', 'vtail', 'depends'})
      def mkenums(self, state, args, kwargs):
          if len(args) != 1:
              raise MesonException('Mkenums requires one positional argument.')
          basename = args[0]
  
          if 'sources' not in kwargs:
              raise MesonException('Missing keyword argument "sources".')
          sources = kwargs.pop('sources')
          if isinstance(sources, str):
              sources = [sources]
          elif not isinstance(sources, list):
              raise MesonException(
                  'Sources keyword argument must be a string or array.')
  
          cmd = []
          known_kwargs = ['comments', 'eprod', 'fhead', 'fprod', 'ftail',
                          'identifier_prefix', 'symbol_prefix', 'template',
                          'vhead', 'vprod', 'vtail']
          known_custom_target_kwargs = ['install_dir', 'build_always',
                                        'depends', 'depend_files']
          c_template = h_template = None
          install_header = False
          for arg, value in kwargs.items():
              if arg == 'sources':
                  raise AssertionError("sources should've already been handled")
              elif arg == 'c_template':
                  c_template = value
                  if isinstance(c_template, mesonlib.File):
                      c_template = c_template.absolute_path(state.environment.source_dir, state.environment.build_dir)
                  if 'template' in kwargs:
                      raise MesonException('Mkenums does not accept both '
                                           'c_template and template keyword '
                                           'arguments at the same time.')
              elif arg == 'h_template':
                  h_template = value
                  if isinstance(h_template, mesonlib.File):
                      h_template = h_template.absolute_path(state.environment.source_dir, state.environment.build_dir)
                  if 'template' in kwargs:
                      raise MesonException('Mkenums does not accept both '
                                           'h_template and template keyword '
                                           'arguments at the same time.')
              elif arg == 'install_header':
                  install_header = value
              elif arg in known_kwargs:
                  cmd += ['--' + arg.replace('_', '-'), value]
              elif arg not in known_custom_target_kwargs:
                  raise MesonException(
                      f'Mkenums does not take a {arg} keyword argument.')
          cmd = [self.interpreter.find_program_impl(['glib-mkenums', 'mkenums'])] + cmd
          custom_kwargs = {}
          for arg in known_custom_target_kwargs:
              if arg in kwargs:
                  custom_kwargs[arg] = kwargs[arg]
  
          targets = []
  
          if h_template is not None:
              h_output = os.path.basename(os.path.splitext(h_template)[0])
              # We always set template as the first element in the source array
              # so --template consumes it.
              h_cmd = cmd + ['--template', '@INPUT@']
              h_sources = [h_template] + sources
              custom_kwargs['install'] = install_header
              if 'install_dir' not in custom_kwargs:
                  custom_kwargs['install_dir'] = \
                      state.environment.coredata.get_option(mesonlib.OptionKey('includedir'))
              h_target = self._make_mkenum_custom_target(state, h_sources,
                                                         h_output, h_cmd,
                                                         custom_kwargs)
              targets.append(h_target)
  
          if c_template is not None:
              c_output = os.path.basename(os.path.splitext(c_template)[0])
              # We always set template as the first element in the source array
              # so --template consumes it.
              c_cmd = cmd + ['--template', '@INPUT@']
              c_sources = [c_template] + sources
              # Never install the C file. Complain on bug tracker if you need it.
              custom_kwargs['install'] = False
              if h_template is not None:
                  if 'depends' in custom_kwargs:
                      custom_kwargs['depends'] += [h_target]
                  else:
                      custom_kwargs['depends'] = h_target
              c_target = self._make_mkenum_custom_target(state, c_sources,
                                                         c_output, c_cmd,
                                                         custom_kwargs)
              targets.insert(0, c_target)
  
          if c_template is None and h_template is None:
              generic_cmd = cmd + ['@INPUT@']
              custom_kwargs['install'] = install_header
              if 'install_dir' not in custom_kwargs:
                  custom_kwargs['install_dir'] = \
                      state.environment.coredata.get_option(mesonlib.OptionKey('includedir'))
              target = self._make_mkenum_custom_target(state, sources, basename,
                                                       generic_cmd, custom_kwargs)
              return ModuleReturnValue(target, [target])
          elif len(targets) == 1:
              return ModuleReturnValue(targets[0], [targets[0]])
          else:
              return ModuleReturnValue(targets, targets)
  
      @FeatureNew('gnome.mkenums_simple', '0.42.0')
      def mkenums_simple(self, state, args, kwargs):
          hdr_filename = args[0] + '.h'
          body_filename = args[0] + '.c'
  
          # not really needed, just for sanity checking
          forbidden_kwargs = ['c_template', 'h_template', 'eprod', 'fhead',
                              'fprod', 'ftail', 'vhead', 'vtail', 'comments']
          for arg in forbidden_kwargs:
              if arg in kwargs:
                  raise MesonException(f'mkenums_simple() does not take a {arg} keyword argument')
  
          # kwargs to pass as-is from mkenums_simple() to mkenums()
          shared_kwargs = ['sources', 'install_header', 'install_dir',
                           'identifier_prefix', 'symbol_prefix']
          mkenums_kwargs = {}
          for arg in shared_kwargs:
              if arg in kwargs:
                  mkenums_kwargs[arg] = kwargs[arg]
  
          # .c file generation
          c_file_kwargs = copy.deepcopy(mkenums_kwargs)
          if 'sources' not in kwargs:
              raise MesonException('Missing keyword argument "sources".')
          sources = kwargs['sources']
          if isinstance(sources, str):
              sources = [sources]
          elif not isinstance(sources, list):
              raise MesonException(
                  'Sources keyword argument must be a string or array.')
  
          # The `install_header` argument will be used by mkenums() when
          # not using template files, so we need to forcibly unset it
          # when generating the C source file, otherwise we will end up
          # installing it
          c_file_kwargs['install_header'] = False
  
          header_prefix = kwargs.get('header_prefix', '')
          decl_decorator = kwargs.get('decorator', '')
          func_prefix = kwargs.get('function_prefix', '')
          body_prefix = kwargs.get('body_prefix', '')
  
          # Maybe we should write our own template files into the build dir
          # instead, but that seems like much more work, nice as it would be.
          fhead = ''
          if body_prefix != '':
              fhead += '%s\n' % body_prefix
          fhead += '#include "%s"\n' % hdr_filename
          for hdr in sources:
              fhead += '#include "%s"\n' % os.path.basename(str(hdr))
          fhead += '''
  #define C_ENUM(v) ((gint) v)
  #define C_FLAGS(v) ((guint) v)
  '''
          c_file_kwargs['fhead'] = fhead
  
          c_file_kwargs['fprod'] = '''
  /* enumerations from "@basename@" */
  '''
  
          c_file_kwargs['vhead'] = '''
  GType
  %s@enum_name@_get_type (void)
  {
    static gsize gtype_id = 0;
    static const G@Type@Value values[] = {''' % func_prefix
  
          c_file_kwargs['vprod'] = '    { C_@TYPE@(@VALUENAME@), "@VALUENAME@", "@valuenick@" },'
  
          c_file_kwargs['vtail'] = '''    { 0, NULL, NULL }
    };
    if (g_once_init_enter (&gtype_id)) {
      GType new_type = g_@type@_register_static (g_intern_static_string ("@EnumName@"), values);
      g_once_init_leave (&gtype_id, new_type);
    }
    return (GType) gtype_id;
  }'''
  
          rv = self.mkenums(state, [body_filename], c_file_kwargs)
          c_file = rv.return_value
  
          # .h file generation
          h_file_kwargs = copy.deepcopy(mkenums_kwargs)
  
          h_file_kwargs['fhead'] = '''#pragma once
  
  #include <glib-object.h>
  {}
  
  G_BEGIN_DECLS
  '''.format(header_prefix)
  
          h_file_kwargs['fprod'] = '''
  /* enumerations from "@basename@" */
  '''
  
          h_file_kwargs['vhead'] = '''
  {}
  GType {}@enum_name@_get_type (void);
  #define @ENUMPREFIX@_TYPE_@ENUMSHORT@ ({}@enum_name@_get_type())'''.format(decl_decorator, func_prefix, func_prefix)
  
          h_file_kwargs['ftail'] = '''
  G_END_DECLS'''
  
          rv = self.mkenums(state, [hdr_filename], h_file_kwargs)
          h_file = rv.return_value
  
          return ModuleReturnValue([c_file, h_file], [c_file, h_file])
  
      @staticmethod
      def _make_mkenum_custom_target(state, sources, output, cmd, kwargs):
          custom_kwargs = {
              'input': sources,
              'output': output,
              'capture': True,
              'command': cmd
          }
          custom_kwargs.update(kwargs)
          return build.CustomTarget(output, state.subdir, state.subproject, custom_kwargs,
                                    # https://github.com/mesonbuild/meson/issues/973
                                    absolute_paths=True)
  
      @permittedKwargs({'sources', 'prefix', 'install_header', 'install_dir', 'stdinc',
                        'nostdinc', 'internal', 'skip_source', 'valist_marshallers',
                        'extra_args'})
      def genmarshal(self, state, args, kwargs):
          if len(args) != 1:
              raise MesonException(
                  'Genmarshal requires one positional argument.')
          output = args[0]
  
          if 'sources' not in kwargs:
              raise MesonException('Missing keyword argument "sources".')
          sources = kwargs.pop('sources')
          if isinstance(sources, str):
              sources = [sources]
          elif not isinstance(sources, list):
              raise MesonException(
                  'Sources keyword argument must be a string or array.')
  
          new_genmarshal = mesonlib.version_compare(self._get_native_glib_version(state), '>= 2.53.3')
  
          cmd = [self.interpreter.find_program_impl('glib-genmarshal')]
          known_kwargs = ['internal', 'nostdinc', 'skip_source', 'stdinc',
                          'valist_marshallers', 'extra_args']
          known_custom_target_kwargs = ['build_always', 'depends',
                                        'depend_files', 'install_dir',
                                        'install_header']
          for arg, value in kwargs.items():
              if arg == 'prefix':
                  cmd += ['--prefix', value]
              elif arg == 'extra_args':
                  if new_genmarshal:
                      cmd += mesonlib.stringlistify(value)
                  else:
                      mlog.warning('The current version of GLib does not support extra arguments \n'
                                   'for glib-genmarshal. You need at least GLib 2.53.3. See ',
                                   mlog.bold('https://github.com/mesonbuild/meson/pull/2049'))
              elif arg in known_kwargs and value:
                  cmd += ['--' + arg.replace('_', '-')]
              elif arg not in known_custom_target_kwargs:
                  raise MesonException(
                      'Genmarshal does not take a {} keyword argument.'.format(
                          arg))
  
          install_header = kwargs.pop('install_header', False)
          install_dir = kwargs.pop('install_dir', None)
  
          custom_kwargs = {
              'input': sources,
          }
  
          # https://github.com/GNOME/glib/commit/0fbc98097fac4d3e647684f344e508abae109fdf
          if mesonlib.version_compare(self._get_native_glib_version(state), '>= 2.51.0'):
              cmd += ['--output', '@OUTPUT@']
          else:
              custom_kwargs['capture'] = True
  
          for arg in known_custom_target_kwargs:
              if arg in kwargs:
                  custom_kwargs[arg] = kwargs[arg]
  
          header_file = output + '.h'
          custom_kwargs['command'] = cmd + ['--body', '@INPUT@']
          if mesonlib.version_compare(self._get_native_glib_version(state), '>= 2.53.4'):
              # Silence any warnings about missing prototypes
              custom_kwargs['command'] += ['--include-header', header_file]
          custom_kwargs['output'] = output + '.c'
          body = build.CustomTarget(output + '_c', state.subdir, state.subproject, custom_kwargs)
  
          custom_kwargs['install'] = install_header
          if install_dir is not None:
              custom_kwargs['install_dir'] = install_dir
          if new_genmarshal:
              cmd += ['--pragma-once']
          custom_kwargs['command'] = cmd + ['--header', '@INPUT@']
          custom_kwargs['output'] = header_file
          header = build.CustomTarget(output + '_h', state.subdir, state.subproject, custom_kwargs)
  
          rv = [body, header]
          return ModuleReturnValue(rv, rv)
  
      @staticmethod
      def _vapi_args_to_command(prefix, variable, kwargs, accept_vapi=False):
          arg_list = mesonlib.extract_as_list(kwargs, variable)
          ret = []
          for arg in arg_list:
              if not isinstance(arg, str):
                  types = 'strings' + ' or InternalDependencys' if accept_vapi else ''
                  raise MesonException(f'All {variable} must be {types}')
              ret.append(prefix + arg)
          return ret
  
      def _extract_vapi_packages(self, state, kwargs):
          '''
          Packages are special because we need to:
          - Get a list of packages for the .deps file
          - Get a list of depends for any VapiTargets
          - Get package name from VapiTargets
          - Add include dirs for any VapiTargets
          '''
          arg_list = kwargs.get('packages')
          if not arg_list:
              return [], [], [], []
          arg_list = mesonlib.listify(arg_list)
          vapi_depends = []
          vapi_packages = []
          vapi_includes = []
          ret = []
          remaining_args = []
          for arg in unholder(arg_list):
              if isinstance(arg, InternalDependency):
                  targets = [t for t in arg.sources if isinstance(t, VapiTarget)]
                  for target in targets:
                      srcdir = os.path.join(state.environment.get_source_dir(),
                                            target.get_subdir())
                      outdir = os.path.join(state.environment.get_build_dir(),
                                            target.get_subdir())
                      outfile = target.get_outputs()[0][:-5] # Strip .vapi
                      ret.append('--vapidir=' + outdir)
                      ret.append('--girdir=' + outdir)
                      ret.append('--pkg=' + outfile)
                      vapi_depends.append(target)
                      vapi_packages.append(outfile)
                      vapi_includes.append(srcdir)
              else:
                  vapi_packages.append(arg)
                  remaining_args.append(arg)
  
          kwargs['packages'] = remaining_args
          vapi_args = ret + self._vapi_args_to_command('--pkg=', 'packages', kwargs, accept_vapi=True)
          return vapi_args, vapi_depends, vapi_packages, vapi_includes
  
      def _generate_deps(self, state, library, packages, install_dir):
          outdir = state.environment.scratch_dir
          fname = os.path.join(outdir, library + '.deps')
          with open(fname, 'w') as ofile:
              for package in packages:
                  ofile.write(package + '\n')
          return build.Data([mesonlib.File(True, outdir, fname)], install_dir, None, state.subproject)
  
      def _get_vapi_link_with(self, target):
          link_with = []
          for dep in target.get_target_dependencies():
              if isinstance(dep, build.SharedLibrary):
                  link_with.append(dep)
              elif isinstance(dep, GirTarget):
                  link_with += self._get_vapi_link_with(dep)
          return link_with
  
      @permittedKwargs({'sources', 'packages', 'metadata_dirs', 'gir_dirs',
                        'vapi_dirs', 'install', 'install_dir'})
      def generate_vapi(self, state, args, kwargs):
          if len(args) != 1:
              raise MesonException('The library name is required')
  
          if not isinstance(args[0], str):
              raise MesonException('The first argument must be the name of the library')
          created_values = []
  
          library = args[0]
          build_dir = os.path.join(state.environment.get_build_dir(), state.subdir)
          source_dir = os.path.join(state.environment.get_source_dir(), state.subdir)
          pkg_cmd, vapi_depends, vapi_packages, vapi_includes = self._extract_vapi_packages(state, kwargs)
          if 'VAPIGEN' in os.environ:
              cmd = [self.interpreter.find_program_impl(os.environ['VAPIGEN'])]
          else:
              cmd = [self.interpreter.find_program_impl('vapigen')]
          cmd += ['--quiet', '--library=' + library, '--directory=' + build_dir]
          cmd += self._vapi_args_to_command('--vapidir=', 'vapi_dirs', kwargs)
          cmd += self._vapi_args_to_command('--metadatadir=', 'metadata_dirs', kwargs)
          cmd += self._vapi_args_to_command('--girdir=', 'gir_dirs', kwargs)
          cmd += pkg_cmd
          cmd += ['--metadatadir=' + source_dir]
  
          if 'sources' not in kwargs:
              raise MesonException('sources are required to generate the vapi file')
  
          inputs = mesonlib.extract_as_list(kwargs, 'sources')
  
          link_with = []
          for i in inputs:
              if isinstance(i, str):
                  cmd.append(os.path.join(source_dir, i))
              elif hasattr(i, 'held_object') and isinstance(i.held_object, GirTarget):
                  link_with += self._get_vapi_link_with(i.held_object)
                  subdir = os.path.join(state.environment.get_build_dir(),
                                        i.held_object.get_subdir())
                  gir_file = os.path.join(subdir, i.held_object.get_outputs()[0])
                  cmd.append(gir_file)
              else:
                  raise MesonException('Input must be a str or GirTarget')
  
          vapi_output = library + '.vapi'
          custom_kwargs = {
              'command': cmd,
              'input': inputs,
              'output': vapi_output,
              'depends': vapi_depends,
          }
          install_dir = kwargs.get('install_dir',
                                   os.path.join(state.environment.coredata.get_option(mesonlib.OptionKey('datadir')),
                                                'vala', 'vapi'))
          if kwargs.get('install'):
              custom_kwargs['install'] = kwargs['install']
              custom_kwargs['install_dir'] = install_dir
  
              # We shouldn't need this locally but we install it
              deps_target = self._generate_deps(state, library, vapi_packages, install_dir)
              created_values.append(deps_target)
          vapi_target = VapiTarget(vapi_output, state.subdir, state.subproject, custom_kwargs)
  
          # So to try our best to get this to just work we need:
          # - link with with the correct library
          # - include the vapi and dependent vapi files in sources
          # - add relevant directories to include dirs
          incs = [build.IncludeDirs(state.subdir, ['.'] + vapi_includes, False)]
          sources = [vapi_target] + vapi_depends
          rv = InternalDependency(None, incs, [], [], link_with, [], sources, [], {})
          created_values.append(rv)
          return ModuleReturnValue(rv, created_values)
  
  def initialize(*args, **kwargs):
      return GnomeModule(*args, **kwargs)
  