gecko-dev/toolkit/moz.configure

# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
# vim: set filetype=python:
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

# Set the MOZ_CONFIGURE_OPTIONS variable with all the options that
# were passed somehow (environment, command line, mozconfig)
@dependable
@imports(_from="mozbuild.shellutil", _import="quote")
@imports(_from="mozbuild.util", _import="ensure_unicode")
@imports(_from="mozbuild.util", _import="system_encoding")
@imports(_from="six", _import="itervalues")
@imports("__sandbox__")
def all_configure_options():
    result = []
    previous = None
    for option in itervalues(__sandbox__._options):
        # __sandbox__._options contains items for both option.name and
        # option.env. But it's also an OrderedDict, meaning both are
        # consecutive.
        # Also ignore OLD_CONFIGURE and MOZCONFIG because they're not
        # interesting.
        if option == previous or option.env in ("OLD_CONFIGURE", "MOZCONFIG"):
            continue
        previous = option
        value = __sandbox__._value_for(option)
        # We only want options that were explicitly given on the command
        # line, the environment, or mozconfig, and that differ from the
        # defaults.
        if (
            value is not None
            and value.origin not in ("default", "implied")
            and value != option.default
        ):
            result.append(
                ensure_unicode(__sandbox__._raw_options[option], system_encoding)
            )
        # We however always include options that are sent to old configure
        # because we don't know their actual defaults. (Keep the conditions
        # separate for ease of understanding and ease of removal)
        elif (
            option.help == "Help missing for old configure options"
            and option in __sandbox__._raw_options
        ):
            result.append(
                ensure_unicode(__sandbox__._raw_options[option], system_encoding)
            )

    # We shouldn't need this, but currently, quote will return a byte string
    # if result is empty, and that's not wanted here.
    if not result:
        return ""

    return quote(*result)


set_config("MOZ_CONFIGURE_OPTIONS", all_configure_options)


@depends(target)
def fold_libs(target):
    return target.os in ("WINNT", "OSX", "Android")


set_config("MOZ_FOLD_LIBS", fold_libs)

# Profiling
# ==============================================================
# Some of the options here imply an option from js/moz.configure,
# so, need to be declared before the include.

option(
    "--enable-jprof",
    env="MOZ_JPROF",
    help="Enable jprof profiling tool (needs mozilla/tools/jprof)",
)


@depends("--enable-jprof")
def jprof(value):
    if value:
        return True


set_config("MOZ_JPROF", jprof)
set_define("MOZ_JPROF", jprof)
imply_option("--enable-profiling", jprof)


@depends(target)
def gecko_profiler(target):
    if target.os == "Android":
        return target.cpu in ("aarch64", "arm", "x86", "x86_64")
    elif target.kernel == "Linux":
        return target.cpu in ("aarch64", "arm", "x86", "x86_64", "mips64")
    elif target.kernel == "FreeBSD":
        return target.cpu in ("aarch64", "x86_64")
    return target.os in ("OSX", "WINNT")


@depends(gecko_profiler)
def gecko_profiler_define(value):
    if value:
        return True


set_config("MOZ_GECKO_PROFILER", gecko_profiler_define)
set_define("MOZ_GECKO_PROFILER", gecko_profiler_define)


# Whether code to parse ELF binaries should be compiled for the Gecko profiler
# (for symbol table dumping).
@depends(gecko_profiler, target)
def gecko_profiler_parse_elf(value, target):
    # Currently we only want to build this code on Linux (including Android) and BSD.
    # For Android, this is in order to dump symbols from Android system, where
    # on other platforms there exist alternatives that don't require bloating
    # up our binary size. For Linux more generally, we use this in profile
    # pre-symbolication support, since MozDescribeCodeAddress doesn't do
    # anything useful on that platform. (Ideally, we would update
    # MozDescribeCodeAddress to call into some Rust crates that parse ELF and
    # DWARF data, but build system issues currently prevent Rust from being
    # used in mozglue.)
    if value and (target.kernel == "Linux" or target.kernel == "FreeBSD"):
        return True


set_config("MOZ_GECKO_PROFILER_PARSE_ELF", gecko_profiler_parse_elf)
set_define("MOZ_GECKO_PROFILER_PARSE_ELF", gecko_profiler_parse_elf)

# enable this by default if the profiler is enabled
# Note: also requires jemalloc
set_config("MOZ_PROFILER_MEMORY", gecko_profiler_define)
set_define("MOZ_PROFILER_MEMORY", gecko_profiler_define)


@depends(
    "--enable-debug",
    milestone,
    build_project,
    # Artifact builds are included because the downloaded artifacts can
    # have DMD enabled.
    when=artifact_builds | depends(when="--enable-replace-malloc")(lambda: True),
)
def dmd_default(debug, milestone, build_project):
    return bool(build_project == "browser" and (debug or milestone.is_nightly))


option(
    "--enable-dmd",
    env="MOZ_DMD",
    default=dmd_default,
    help="{Enable|Disable} Dark Matter Detector (heap profiler). "
    "Also enables jemalloc, replace-malloc and profiling",
)


@depends("--enable-dmd")
def dmd(value):
    if value:
        return True


set_config("MOZ_DMD", dmd)
set_define("MOZ_DMD", dmd)
add_old_configure_assignment("MOZ_DMD", dmd)
imply_option("--enable-profiling", dmd)
imply_option("--enable-jemalloc", dmd, when=compile_environment)
imply_option("--enable-replace-malloc", dmd, when=compile_environment)

# ALSA cubeb backend
# ==============================================================
system_lib_option("--enable-alsa", env="MOZ_ALSA", help="Enable ALSA audio backend.")

alsa = pkg_check_modules("MOZ_ALSA", "alsa", when="--enable-alsa")

set_config("MOZ_ALSA", depends_if(alsa)(lambda _: True))
set_define("MOZ_ALSA", depends_if(alsa)(lambda _: True))

# JACK cubeb backend
# ==============================================================
system_lib_option("--enable-jack", env="MOZ_JACK", help="Enable JACK audio backend.")

jack = pkg_check_modules("MOZ_JACK", "jack", when="--enable-jack")

set_config("MOZ_JACK", depends_if(jack)(lambda _: True))
set_define("MOZ_JACK", depends_if(jack)(lambda _: True))

# PulseAudio cubeb backend
# ==============================================================
@depends(target)
def pulseaudio_default(target):
    return target.os not in ("WINNT", "OSX", "Android", "OpenBSD")


option(
    "--enable-pulseaudio",
    env="MOZ_PULSEAUDIO",
    default=pulseaudio_default,
    help="{Enable|Disable} PulseAudio audio backend.",
)

pulseaudio = pkg_check_modules("MOZ_PULSEAUDIO", "libpulse", when="--enable-pulseaudio")

set_config("MOZ_PULSEAUDIO", depends_if(pulseaudio)(lambda _: True))
set_define("MOZ_PULSEAUDIO", depends_if(pulseaudio)(lambda _: True))

# AudioUnit cubeb Rust backend
# ==============================================================
@depends(target)
def enable_audiounit_rust(target):
    return target.os == "OSX" and target.kernel == "Darwin"


set_config("MOZ_AUDIOUNIT_RUST", True, when=enable_audiounit_rust)
set_define("MOZ_AUDIOUNIT_RUST", True, when=enable_audiounit_rust)

# Javascript engine
# ==============================================================
include("../js/moz.configure")


# NodeJS
# ==============================================================
include("../build/moz.configure/node.configure")

# L10N
# ==============================================================
option("--with-l10n-base", nargs=1, env="L10NBASEDIR", help="Path to l10n repositories")


@depends("--with-l10n-base", "MOZ_AUTOMATION", check_build_environment)
@imports(_from="os.path", _import="isdir")
@imports(_from="os.path", _import="expanduser")
@imports(_from="os", _import="environ")
def l10n_base(value, automation, build_env):
    if value:
        path = value[0]
        if not isdir(path):
            die("Invalid value --with-l10n-base, %s doesn't exist", path)
    elif automation:
        path = os.path.join(build_env.topsrcdir, "../l10n-central")
    else:
        path = os.path.join(
            environ.get(
                "MOZBUILD_STATE_PATH", expanduser(os.path.join("~", ".mozbuild"))
            ),
            "l10n-central",
        )
    return os.path.realpath(os.path.abspath(path))


set_config("L10NBASEDIR", l10n_base)


# Default toolkit
# ==============================================================
@depends(target)
def toolkit_choices(target):
    if target.os == "WINNT":
        return ("cairo-windows",)
    elif target.os == "OSX":
        return ("cairo-cocoa",)
    elif target.os == "Android":
        return ("cairo-android",)
    else:
        return ("cairo-gtk3", "cairo-gtk3-wayland")


@depends(toolkit_choices)
def toolkit_default(choices):
    return choices[0]


option(
    "--enable-default-toolkit",
    nargs=1,
    choices=toolkit_choices,
    default=toolkit_default,
    help="Select default toolkit",
)


@depends_if("--enable-default-toolkit")
def full_toolkit(value):
    return value[0]


@depends(full_toolkit)
def toolkit(toolkit):
    if toolkit.startswith("cairo-gtk3"):
        widget_toolkit = "gtk"
    else:
        widget_toolkit = toolkit.replace("cairo-", "")
    return widget_toolkit


set_config("MOZ_WIDGET_TOOLKIT", toolkit)
add_old_configure_assignment("MOZ_WIDGET_TOOLKIT", toolkit)


@depends(toolkit)
def toolkit_define(toolkit):
    if toolkit != "windows":
        return "MOZ_WIDGET_%s" % toolkit.upper()


set_define(toolkit_define, True)


@depends(toolkit)
def toolkit_gtk(toolkit):
    return toolkit == "gtk"


# Wayland support
# ==============================================================
wayland_headers = pkg_check_modules(
    "MOZ_WAYLAND",
    "gtk+-wayland-3.0 >= 3.14 xkbcommon >= 0.4.1 libdrm >= 2.4",
    allow_missing=depends(full_toolkit)(lambda t: t == "cairo-gtk3"),
    when=depends(full_toolkit)(lambda t: t in ("cairo-gtk3", "cairo-gtk3-wayland")),
)


@depends(wayland_headers, toolkit_gtk, artifact_builds)
def wayland_headers(wayland, toolkit_gtk, artifacts):
    if toolkit_gtk and artifacts:
        return True
    return wayland


set_config("MOZ_WAYLAND", depends_if(wayland_headers)(lambda _: True))
set_define("MOZ_WAYLAND", depends_if(wayland_headers)(lambda _: True))

# GL Provider
# ==============================================================
option("--with-gl-provider", nargs=1, help="Set GL provider backend type")


@depends("--with-gl-provider")
def gl_provider(value):
    if value:
        return value[0]


@depends(gl_provider)
def gl_provider_define(provider):
    if provider:
        return "GLContextProvider%s" % provider


set_define("MOZ_GL_PROVIDER", gl_provider_define)


@depends(gl_provider, wayland_headers, toolkit_gtk)
def gl_default_provider(value, wayland, toolkit_gtk):
    if value:
        return value
    elif wayland:
        return "EGL"
    elif toolkit_gtk:
        return "GLX"


set_config("MOZ_GL_PROVIDER", gl_provider)
set_config("MOZ_GL_DEFAULT_PROVIDER", gl_default_provider)


@depends(gl_default_provider)
def gl_provider_define(provider):
    if provider:
        return "GL_PROVIDER_%s" % provider


set_define(gl_provider_define, True)


# PDF printing
# ==============================================================
@depends(toolkit)
def pdf_printing(toolkit):
    if toolkit in ("windows", "gtk", "android"):
        return True


set_config("MOZ_PDF_PRINTING", pdf_printing)
set_define("MOZ_PDF_PRINTING", pdf_printing)


# Event loop instrumentation
# ==============================================================
option(env="MOZ_INSTRUMENT_EVENT_LOOP", help="Force-enable event loop instrumentation")


@depends("MOZ_INSTRUMENT_EVENT_LOOP", toolkit)
def instrument_event_loop(value, toolkit):
    if value or (
        toolkit in ("windows", "gtk", "cocoa", "android") and value.origin == "default"
    ):
        return True


set_config("MOZ_INSTRUMENT_EVENT_LOOP", instrument_event_loop)
set_define("MOZ_INSTRUMENT_EVENT_LOOP", instrument_event_loop)


# Fontconfig Freetype
# ==============================================================
option(env="USE_FC_FREETYPE", help="Force-enable the use of fontconfig freetype")


@depends("USE_FC_FREETYPE", toolkit)
def fc_freetype(value, toolkit):
    if value or (toolkit == "gtk" and value.origin == "default"):
        return True


add_old_configure_assignment("USE_FC_FREETYPE", fc_freetype)
set_define("USE_FC_FREETYPE", fc_freetype)

# Pango
# ==============================================================
pkg_check_modules("MOZ_PANGO", "pango >= 1.22.0", when=toolkit_gtk)

# Fontconfig
# ==============================================================
fontconfig_info = pkg_check_modules(
    "_FONTCONFIG", "fontconfig >= 2.7.0", when=fc_freetype
)


@depends(fc_freetype)
def check_for_freetype2(fc_freetype):
    if fc_freetype:
        return True


# Check for freetype2. Flags are combined with fontconfig flags.
freetype2_info = pkg_check_modules(
    "_FT2", "freetype2 >= 6.1.0", when=check_for_freetype2
)


@depends(fontconfig_info, freetype2_info)
def freetype2_combined_info(fontconfig_info, freetype2_info):
    if not freetype2_info:
        return
    if not fontconfig_info:
        return freetype2_info
    return namespace(
        cflags=freetype2_info.cflags + fontconfig_info.cflags,
        libs=freetype2_info.libs + fontconfig_info.libs,
    )


add_old_configure_assignment(
    "_HAVE_FREETYPE2", depends_if(freetype2_info)(lambda _: True)
)
set_define("MOZ_HAVE_FREETYPE2", depends_if(freetype2_info)(lambda _: True))

# Apple platform decoder support
# ==============================================================
@depends(toolkit)
def applemedia(toolkit):
    if toolkit in ("cocoa", "uikit"):
        return True


set_config("MOZ_APPLEMEDIA", applemedia)
set_define("MOZ_APPLEMEDIA", applemedia)
add_old_configure_assignment("MOZ_APPLEMEDIA", applemedia)

# Windows Media Foundation support
# ==============================================================
option("--disable-wmf", help="Disable support for Windows Media Foundation")


@depends("--disable-wmf", target)
def wmf(value, target):
    enabled = bool(value)
    if value.origin == "default":
        # Enable Windows Media Foundation support by default.
        # Note our minimum SDK version is Windows 7 SDK, so we are (currently)
        # guaranteed to have a recent-enough SDK to build WMF.
        enabled = target.os == "WINNT"
    if enabled and target.os != "WINNT":
        die("Cannot enable Windows Media Foundation support on %s", target.os)
    if enabled:
        return True


set_config("MOZ_WMF", wmf)
set_define("MOZ_WMF", wmf)

# FFmpeg H264/AAC Decoding Support
# ==============================================================
option("--disable-ffmpeg", help="Disable FFmpeg for fragmented H264/AAC decoding")


@depends("--disable-ffmpeg", target)
def ffmpeg(value, target):
    enabled = bool(value)
    if value.origin == "default":
        enabled = target.os not in ("Android", "WINNT")
    if enabled:
        return True


set_config("MOZ_FFMPEG", ffmpeg)
set_define("MOZ_FFMPEG", ffmpeg)
imply_option("--enable-fmp4", ffmpeg, "--enable-ffmpeg")

# AV1 Video Codec Support
# ==============================================================
option("--disable-av1", help="Disable av1 video support")


@depends("--enable-av1")
def av1(value):
    if value:
        return True


@depends(target, when=av1 & compile_environment)
def dav1d_asm(target):
    if target.cpu in ("aarch64", "x86", "x86_64"):
        return True


@depends(target, when=av1 & compile_environment)
def dav1d_nasm(target):
    if target.cpu in ("x86", "x86_64"):
        return namespace(version="2.14", what="AV1")


set_config("MOZ_DAV1D_ASM", dav1d_asm)
set_define("MOZ_DAV1D_ASM", dav1d_asm)
set_config("MOZ_AV1", av1)
set_define("MOZ_AV1", av1)

# JXL Image Codec Support
# ==============================================================
option("--disable-jxl", help="Disable jxl image support")


@depends("--disable-jxl", milestone.is_nightly)
def jxl(value, is_nightly):
    if is_nightly and value:
        return True


set_config("MOZ_JXL", jxl)
set_define("MOZ_JXL", jxl)

# Built-in fragmented MP4 support.
# ==============================================================
option(
    "--disable-fmp4",
    env="MOZ_FMP4",
    help="Disable support for in built Fragmented MP4 parsing",
)


@depends("--disable-fmp4", target, wmf, applemedia)
def fmp4(value, target, wmf, applemedia):
    enabled = bool(value)
    if value.origin == "default":
        # target.os == 'Android' includes all B2G versions
        enabled = wmf or applemedia or target.os == "Android"
    if enabled:
        return True


set_config("MOZ_FMP4", fmp4)
set_define("MOZ_FMP4", fmp4)
add_old_configure_assignment("MOZ_FMP4", fmp4)


@depends(target)
def sample_type_is_s16(target):
    # Use integers over floats for audio on Android regardless of the CPU
    # architecture, because audio backends for Android don't support floats.
    # We also use integers on ARM because it's more efficient.
    if target.os == "Android" or target.cpu == "arm":
        return True


@depends(sample_type_is_s16)
def sample_type_is_float(t):
    if not t:
        return True


set_config("MOZ_SAMPLE_TYPE_S16", sample_type_is_s16)
set_define("MOZ_SAMPLE_TYPE_S16", sample_type_is_s16)
set_config("MOZ_SAMPLE_TYPE_FLOAT32", sample_type_is_float)
set_define("MOZ_SAMPLE_TYPE_FLOAT32", sample_type_is_float)

set_define("MOZ_VORBIS", sample_type_is_float)
set_config("MOZ_VORBIS", sample_type_is_float)
set_define("MOZ_TREMOR", sample_type_is_s16)
set_config("MOZ_TREMOR", sample_type_is_s16)

# OpenMAX IL Decoding Support
# ==============================================================
option("--enable-openmax", help="Enable OpenMAX IL for video/audio decoding")


@depends("--enable-openmax")
def openmax(value):
    enabled = bool(value)
    if enabled:
        return True


set_config("MOZ_OMX", openmax)
set_define("MOZ_OMX", openmax)

# EME Support
# ==============================================================
@depends(target)
def eme_choices(target):
    if (
        target.kernel in ("WINNT", "Linux")
        and target.os != "Android"
        and target.cpu in ("x86", "x86_64")
    ):
        return ("widevine",)
    if target.kernel == "WINNT" and target.cpu == "aarch64":
        return ("widevine",)
    if target.os in ("OSX"):
        return ("widevine",)


# Widevine is enabled by default in desktop browser builds, except
# on aarch64 Windows.
@depends(build_project, eme_choices, target)
def eme_default(build_project, choices, target):
    if build_project == "browser":
        if target.kernel != "WINNT" or target.cpu != "aarch64":
            return choices


option(
    "--enable-eme",
    nargs="+",
    choices=eme_choices,
    default=eme_default,
    when=eme_choices,
    help="{Enable|Disable} support for Encrypted Media Extensions",
)


@depends("--enable-eme", fmp4, when=eme_choices)
def eme(enabled, fmp4):
    if enabled and enabled.origin != "default" and not fmp4:
        die("Encrypted Media Extension support requires " "Fragmented MP4 support")


@depends("--enable-eme", when=eme_choices)
def eme_modules(value):
    return value


# Fallback to an empty list when eme_choices is empty, setting eme_modules to
# None.
set_config("MOZ_EME_MODULES", eme_modules | dependable([]))


@depends(eme_modules, target, when=eme_modules)
def eme_win32_artifact(modules, target):
    if "widevine" in modules and target.kernel == "WINNT" and target.cpu == "aarch64":
        return True


set_config("MOZ_EME_WIN32_ARTIFACT", eme_win32_artifact)

option(
    name="--enable-chrome-format",
    help="Select FORMAT of chrome files during packaging.",
    nargs=1,
    choices=("omni", "jar", "flat"),
    default="omni",
)


@depends("--enable-chrome-format")
def packager_format(value):
    return value[0]


set_config("MOZ_PACKAGER_FORMAT", packager_format)


@depends(host, build_project)
def jar_maker_format(host, build_project):
    # Multilocales for mobile/android use the same mergedirs for all locales,
    # so we can't use symlinks for those builds.
    if host.os == "WINNT" or build_project == "mobile/android":
        return "flat"
    return "symlink"


set_config("MOZ_JAR_MAKER_FILE_FORMAT", jar_maker_format)


@depends(toolkit)
def omnijar_name(toolkit):
    # Fennec's static resources live in the assets/ folder of the
    # APK.  Adding a path to the name here works because we only
    # have one omnijar file in the final package (which is not the
    # case on desktop).
    return "assets/omni.ja" if toolkit == "android" else "omni.ja"


set_config("OMNIJAR_NAME", omnijar_name)

project_flag("MOZ_PLACES", help="Build Places if required", set_as_define=True)

project_flag(
    "MOZ_SERVICES_HEALTHREPORT",
    help="Build Firefox Health Reporter Service",
    set_for_old_configure=True,
    set_as_define=True,
)

project_flag(
    "MOZ_NORMANDY",
    help="Enable Normandy recipe runner",
    set_for_old_configure=True,
    set_as_define=True,
)

project_flag("MOZ_SERVICES_SYNC", help="Build Sync Services if required")

project_flag(
    "MOZ_ANDROID_HISTORY",
    help="Enable Android History instead of Places",
    set_as_define=True,
)

project_flag(
    "MOZ_DEDICATED_PROFILES",
    help="Enable dedicated profiles per install",
    set_as_define=True,
)

project_flag(
    "MOZ_BLOCK_PROFILE_DOWNGRADE",
    help="Block users from starting profiles last used by a newer build",
    set_as_define=True,
)


@depends("MOZ_PLACES", "MOZ_ANDROID_HISTORY")
def check_places_and_android_history(places, android_history):
    if places and android_history:
        die("Cannot use MOZ_ANDROID_HISTORY alongside MOZ_PLACES.")


option(
    env="MOZ_TELEMETRY_REPORTING",
    default=mozilla_official,
    help="Enable telemetry reporting",
)

set_define("MOZ_TELEMETRY_REPORTING", True, when="MOZ_TELEMETRY_REPORTING")
add_old_configure_assignment(
    "MOZ_TELEMETRY_REPORTING", True, when="MOZ_TELEMETRY_REPORTING"
)


@depends("MOZ_TELEMETRY_REPORTING", milestone.is_nightly)
def telemetry_on_by_default(reporting, is_nightly):
    return reporting and is_nightly


set_define("MOZ_TELEMETRY_ON_BY_DEFAULT", True, when=telemetry_on_by_default)


# gpsd support
# ==============================================================
option("--enable-gpsd", env="MOZ_GPSD", help="Enable gpsd support")


@depends("--enable-gpsd")
def gpsd(value):
    return bool(value)


system_gpsd = pkg_check_modules("MOZ_GPSD", "libgps >= 3.11", when=gpsd)

set_config("MOZ_GPSD", depends_if(system_gpsd)(lambda _: True))

# Miscellaneous programs
# ==============================================================

check_prog("TAR", ("gnutar", "gtar", "tar"))
check_prog("UNZIP", ("unzip",))
check_prog("ZIP", ("zip",))
check_prog("GN", ("gn",), allow_missing=True)

# Key files
# ==============================================================
include("../build/moz.configure/keyfiles.configure")

simple_keyfile("Mozilla API")

simple_keyfile("Google Location Service API")

simple_keyfile("Google Safebrowsing API")

id_and_secret_keyfile("Bing API")

simple_keyfile("Adjust SDK")

id_and_secret_keyfile("Leanplum SDK")

simple_keyfile("Pocket API")


# WebRender Debugger integration
# ==============================================================

option(
    "--enable-webrender-debugger", help="Build the websocket debug server in WebRender"
)

set_config(
    "MOZ_WEBRENDER_DEBUGGER", depends_if("--enable-webrender-debugger")(lambda _: True)
)

# Additional system headers defined at the application level
# ==============================================================

option(
    "--enable-app-system-headers",
    env="MOZ_APP_SYSTEM_HEADERS",
    help="Use additional system headers defined in $MOZ_BUILD_APP/app-system-headers.mozbuild",
)


@depends("--enable-app-system-headers")
def app_system_headers(value):
    if value:
        return True


set_config("MOZ_APP_SYSTEM_HEADERS", app_system_headers)
set_define("MOZ_APP_SYSTEM_HEADERS", app_system_headers)

# Printing
# ==============================================================
option("--disable-printing", help="Disable printing support")


@depends("--disable-printing")
def printing(value):
    if value:
        return True


set_config("NS_PRINTING", printing)
set_define("NS_PRINTING", printing)
set_define("NS_PRINT_PREVIEW", printing)

# Speech-dispatcher support
# ==============================================================
@depends(toolkit)
def no_speechd_on_non_gtk(toolkit):
    if toolkit != "gtk":
        return False


imply_option(
    "--enable-synth-speechd", no_speechd_on_non_gtk, reason="--enable-default-toolkit"
)

option("--disable-synth-speechd", help="Disable speech-dispatcher support")

set_config("MOZ_SYNTH_SPEECHD", depends_if("--disable-synth-speechd")(lambda _: True))

# Speech API
# ==============================================================
option("--disable-webspeech", help="Disable support for HTML Speech API")


@depends("--disable-webspeech")
def webspeech(value):
    if value:
        return True


set_config("MOZ_WEBSPEECH", webspeech)
set_define("MOZ_WEBSPEECH", webspeech)
add_old_configure_assignment("MOZ_WEBSPEECH", webspeech)

# Speech API test backend
# ==============================================================
option(
    "--enable-webspeechtestbackend",
    default=webspeech,
    help="{Enable|Disable} support for HTML Speech API Test Backend",
)


@depends_if("--enable-webspeechtestbackend")
def webspeech_test_backend(value):
    return True


set_config("MOZ_WEBSPEECH_TEST_BACKEND", webspeech_test_backend)
set_define("MOZ_WEBSPEECH_TEST_BACKEND", webspeech_test_backend)

# Enable IPDL's "expensive" unit tests
# ==============================================================
option("--enable-ipdl-tests", help="Enable expensive IPDL tests")

set_config("MOZ_IPDL_TESTS", depends_if("--enable-ipdl-tests")(lambda _: True))

# Graphics
# ==============================================================
@depends(target, milestone)
def skia_pdf_default(target, milestone):
    return milestone.is_nightly and target.os != "WINNT"


option("--enable-skia-pdf", default=skia_pdf_default, help="{Enable|Disable} Skia PDF")

set_config("MOZ_ENABLE_SKIA_PDF", True, when="--enable-skia-pdf")
set_define("MOZ_ENABLE_SKIA_PDF", True, when="--enable-skia-pdf")

set_config(
    "SKIA_INCLUDES",
    [
        "/gfx/skia",
        "/gfx/skia/skia",
    ],
)

system_lib_option(
    "--with-system-webp", help="Use system libwebp (located with pkgconfig)"
)

system_webp = pkg_check_modules(
    "MOZ_WEBP", "libwebp >= 1.0.2 libwebpdemux >= 1.0.2", when="--with-system-webp"
)

set_config("MOZ_SYSTEM_WEBP", depends(when=system_webp)(lambda: True))

# Build Freetype in the tree
# ==============================================================
@depends(target, "--enable-skia-pdf")
def tree_freetype(target, skia_pdf):
    if target.os == "Android" or (skia_pdf and target.os == "WINNT"):
        return True


set_define("MOZ_TREE_FREETYPE", tree_freetype)
set_config("MOZ_TREE_FREETYPE", tree_freetype)
add_old_configure_assignment("MOZ_TREE_FREETYPE", tree_freetype)

set_define("HAVE_FT_BITMAP_SIZE_Y_PPEM", tree_freetype)
set_define("HAVE_FT_GLYPHSLOT_EMBOLDEN", tree_freetype)
set_define("HAVE_FT_LOAD_SFNT_TABLE", tree_freetype)


@depends(freetype2_combined_info, tree_freetype, check_build_environment)
def ft2_info(freetype2_combined_info, tree_freetype, build_env):
    if tree_freetype:
        return namespace(
            cflags=("-I%s/modules/freetype2/include" % build_env.topsrcdir,), libs=()
        )
    if freetype2_combined_info:
        return freetype2_combined_info


set_config("FT2_LIBS", ft2_info.libs)
add_old_configure_assignment("FT2_LIBS", ft2_info.libs)
add_old_configure_assignment("FT2_CFLAGS", ft2_info.cflags)

# WebDriver (HTTP / BiDi)
# ==============================================================
#
# WebDriver is a remote control interface that enables introspection and
# control of user agents. It provides a platform- and language-neutral wire
# protocol as a way for out-of-process programs to remotely instruct the
# behavior of web browsers.
#
# The Gecko implementation is backed by Marionette and Remote Agent.
# Both protocols are not really toolkit features, as much as Gecko engine
# features. But they are enabled based on the toolkit, so here it lives.
#
# Marionette remote protocol
# -----------------------------------------------------------
#
# Marionette is the Gecko remote protocol used for various remote control,
# automation, and testing purposes throughout Gecko-based applications like
# Firefox, Thunderbird, and any mobile browser built upon GeckoView.
#
# It also backs ../testing/geckodriver, which is Mozilla's WebDriver
# implementation.
#
# The source of Marionette lives in ../remote/marionette.
#
# For more information, see:
# https://firefox-source-docs.mozilla.org/testing/marionette/index.html
#
# Remote Agent (WebDriver BiDi / partial CDP)
# -----------------------------------------------------------
#
# The primary purpose is the implementation of the WebDriver BiDi specification.
# But it also complements the existing Firefox Developer Tools Remote Debugging
# Protocol (RDP) by implementing a subset of the Chrome DevTools Protocol (CDP).
#
# The source of Remote Agent lives in ../remote.
#
# For more information, see:
# https://firefox-source-docs.mozilla.org/remote/index.html


option(
    "--disable-webdriver",
    help="Disable support for WebDriver remote protocols",
)


@depends("--disable-webdriver")
def webdriver(enabled):
    if enabled:
        return True


set_config("ENABLE_WEBDRIVER", webdriver)
set_define("ENABLE_WEBDRIVER", webdriver)


# geckodriver WebDriver implementation
# ==============================================================
#
# Turn off geckodriver for build configs we don't handle yet,
# but allow --enable-geckodriver to override when compile environment is available.
# --disable-tests implies disabling geckodriver.
# Disable building in CI


@depends(
    "--enable-tests", target, cross_compiling, hazard_analysis, asan, "MOZ_AUTOMATION"
)
def geckodriver_default(enable_tests, target, cross_compile, hazard, asan, automation):
    if not enable_tests:
        return False
    if hazard or target.os == "Android" or (asan and cross_compile):
        return False
    if automation:
        return False
    return True


option(
    "--enable-geckodriver",
    default=geckodriver_default,
    when="--enable-compile-environment",
    help="{Build|Do not build} geckodriver",
)


@depends("--enable-geckodriver", when="--enable-compile-environment")
def geckodriver(enabled):
    if enabled:
        return True


set_config("MOZ_GECKODRIVER", geckodriver)


# WebRTC
# ========================================================
@depends(target)
def webrtc_default(target):
    # Turn off webrtc for OS's we don't handle yet, but allow
    # --enable-webrtc to override.
    os_match = False
    for os_fragment in (
        "linux",
        "mingw",
        "android",
        "linuxandroid",
        "dragonfly",
        "freebsd",
        "netbsd",
        "openbsd",
        "darwin",
    ):
        if target.raw_os.startswith(os_fragment):
            os_match = True

    cpu_match = False
    if (
        target.cpu
        in (
            "x86_64",
            "arm",
            "aarch64",
            "x86",
            "ia64",
            "mips32",
            "mips64",
        )
        or target.cpu.startswith("ppc")
    ):
        cpu_match = True

    if os_match and cpu_match:
        return True
    return False


option(
    "--disable-webrtc",
    default=webrtc_default,
    help="{Enable|Disable} support for WebRTC",
)


@depends("--disable-webrtc")
def webrtc(enabled):
    if enabled:
        return True


set_config("MOZ_WEBRTC", webrtc)
set_define("MOZ_WEBRTC", webrtc)
set_config("MOZ_SCTP", webrtc)
set_define("MOZ_SCTP", webrtc)
set_config("MOZ_SRTP", webrtc)
set_define("MOZ_SRTP", webrtc)
set_config("MOZ_WEBRTC_SIGNALING", webrtc)
set_define("MOZ_WEBRTC_SIGNALING", webrtc)
set_config("MOZ_PEERCONNECTION", webrtc)
set_define("MOZ_PEERCONNECTION", webrtc)
# MOZ_WEBRTC_ASSERT_ALWAYS turns on a number of safety asserts in
# opt/production builds (via MOZ_CRASH())
set_config("MOZ_WEBRTC_ASSERT_ALWAYS", webrtc)
set_define("MOZ_WEBRTC_ASSERT_ALWAYS", webrtc)

# RAW media
# ==============================================================


@depends(target, webrtc)
def raw_media_default(target, webrtc):
    if target.os == "Android":
        return True
    if webrtc:
        return True


option(
    "--enable-raw",
    default=raw_media_default,
    help="{Enable|Disable} support for RAW media",
)

set_config("MOZ_RAW", depends_if("--enable-raw")(lambda _: True))
set_define("MOZ_RAW", depends_if("--enable-raw")(lambda _: True))


# X11
# ==============================================================
set_config("MOZ_X11", True, when=toolkit_gtk)
set_define("MOZ_X11", True, when=toolkit_gtk)


@depends(webrtc, when=toolkit_gtk)
def x11_libs(webrtc):
    libs = [
        "x11",
        "xcb",
        "xcb-shm",
        "x11-xcb",
        "xext",
        "xrandr >= 1.4.0",
    ]
    if webrtc:
        # third_party/libwebrtc/webrtc/webrtc_gn/moz.build adds those
        # manually, ensure they're available.
        libs += [
            "xcomposite",
            "xcursor",
            "xdamage",
            "xfixes",
            "xi",
        ]
    return libs


pkg_check_modules("MOZ_X11", x11_libs, when=toolkit_gtk)
pkg_check_modules("MOZ_X11_SM", ["ice", "sm"], cflags_only=True, when=toolkit_gtk)


# ASan Reporter Addon
# ==============================================================
option(
    "--enable-address-sanitizer-reporter",
    help="Enable Address Sanitizer Reporter Extension",
)


@depends("--enable-address-sanitizer-reporter")
def enable_asan_reporter(value):
    if value:
        return True


set_config("MOZ_ASAN_REPORTER", enable_asan_reporter)
set_define("MOZ_ASAN_REPORTER", enable_asan_reporter)
add_old_configure_assignment("MOZ_ASAN_REPORTER", enable_asan_reporter)

# Elfhack
# ==============================================================
with only_when("--enable-compile-environment"):

    @depends(host, target)
    def has_elfhack(host, target):
        return (
            target.kernel == "Linux"
            and host.kernel == "Linux"
            and target.cpu in ("arm", "x86", "x86_64")
        )

    @depends("--enable-release", enable_linker)
    def default_elfhack(release, linker):
        # Disable elfhack when explicitly building with --enable-linker=lld
        if linker and linker.origin != "default" and linker[0] == "lld":
            return False
        return bool(release)

    with only_when(has_elfhack):
        option(
            "--disable-elf-hack",
            default=default_elfhack,
            help="{Enable|Disable} elf hacks",
        )

        set_config("USE_ELF_HACK", depends_if("--enable-elf-hack")(lambda _: True))


@depends(check_build_environment)
def idl_roots(build_env):
    return namespace(
        ipdl_root=os.path.join(build_env.topobjdir, "ipc", "ipdl"),
        webidl_root=os.path.join(build_env.topobjdir, "dom", "bindings"),
        xpcom_root=os.path.join(build_env.topobjdir, "xpcom", "components"),
    )


set_config("WEBIDL_ROOT", idl_roots.webidl_root)
set_config("IPDL_ROOT", idl_roots.ipdl_root)
set_config("XPCOM_ROOT", idl_roots.xpcom_root)

# Proxy bypass protection
# ==============================================================

option(
    "--enable-proxy-bypass-protection",
    help="Prevent suspected or confirmed proxy bypasses",
)


@depends_if("--enable-proxy-bypass-protection")
def proxy_bypass_protection(_):
    return True


set_config("MOZ_PROXY_BYPASS_PROTECTION", proxy_bypass_protection)
set_define("MOZ_PROXY_BYPASS_PROTECTION", proxy_bypass_protection)

# Proxy direct failover
# ==============================================================

option(
    "--disable-proxy-direct-failover",
    help="Disable direct failover for system requests",
)


@depends_if("--disable-proxy-direct-failover")
def proxy_direct_failover(value):
    if value:
        return True


set_config("MOZ_PROXY_DIRECT_FAILOVER", proxy_direct_failover)
set_define("MOZ_PROXY_DIRECT_FAILOVER", proxy_direct_failover)

# MIDL
# ==============================================================


@depends(c_compiler, toolchain_prefix)
def midl_names(c_compiler, toolchain_prefix):
    if c_compiler and c_compiler.type in ["gcc", "clang"]:
        # mingw
        widl = ("widl",)
        if toolchain_prefix:
            prefixed = tuple("%s%s" % (p, "widl") for p in toolchain_prefix)
            widl = prefixed + widl
        return widl

    return ("midl.exe",)


@depends(target, "--enable-compile-environment")
def check_for_midl(target, compile_environment):
    if target.os != "WINNT":
        return

    if compile_environment:
        return True


midl = check_prog(
    "MIDL", midl_names, when=check_for_midl, allow_missing=True, paths=sdk_bin_path
)

option(env="MIDL_FLAGS", nargs=1, help="Extra flags to pass to MIDL")


@depends(
    "MIDL_FLAGS",
    c_compiler,
    target,
    host,
    midl,
    when=depends(midl, target)(lambda m, t: m and t.kernel == "WINNT"),
)
def midl_flags(flags, c_compiler, target, host, midl):
    if flags:
        flags = flags[0].split()
    else:
        flags = []

    if not midl.endswith("widl"):
        env = {
            "x86": "win32",
            "x86_64": "x64",
            "aarch64": "arm64",
        }[target.cpu]
        flags += ["-env", env]

        if host.os == "WINNT":
            return flags + ["-cpp_cmd", c_compiler.compiler]

        # If cross-compiling and using midl instead of widl, for now, we'll
        # assume we can find the Windows version of clang-cl in the PATH.
        # It is required because while Wine is able to spawn Linux
        # processes from Windows programs(!), the calling program doesn't
        # have access to the process output and can't wait for it to
        # finish. Midl runs clang-cl as a preprocessor and expects to read
        # its output...
        clang_cl_exe = find_program("clang-cl.exe")
        if not clang_cl_exe:
            die("Cannot find clang-cl.exe")
        return flags + ["-cpp_cmd", clang_cl_exe]

    # widl
    return flags + {
        "x86": ["--win32", "-m32"],
        "x86_64": ["--win64", "-m64"],
    }[target.cpu]


set_config("MIDL_FLAGS", midl_flags)

# Accessibility
# ==============================================================

option("--disable-accessibility", help="Disable accessibility support")


@depends("--enable-accessibility", check_for_midl, midl, c_compiler)
def accessibility(value, check_for_midl, midl, c_compiler):
    enabled = bool(value)

    if not enabled:
        return

    if check_for_midl and not midl:
        if c_compiler and c_compiler.type in ("gcc", "clang"):
            die(
                "You have accessibility enabled, but widl could not be found. "
                "Add --disable-accessibility to your mozconfig or install widl. "
                "See https://developer.mozilla.org/en-US/docs/Cross_Compile_Mozilla_for_Mingw32 for details."
            )
        else:
            die(
                "MIDL could not be found. "
                "Building accessibility without MIDL is not supported."
            )

    return enabled


set_config("ACCESSIBILITY", accessibility)
set_define("ACCESSIBILITY", accessibility)
add_old_configure_assignment("ACCESSIBILITY", accessibility)


# Addon signing
# ==============================================================
@depends(milestone)
def require_signing(milestone):
    return milestone.is_release_or_beta and not milestone.is_esr


option(
    env="MOZ_REQUIRE_SIGNING",
    default=require_signing,
    help="Enforce that add-ons are signed by the trusted root",
)

set_config("MOZ_REQUIRE_SIGNING", True, when="MOZ_REQUIRE_SIGNING")
set_define("MOZ_REQUIRE_SIGNING", True, when="MOZ_REQUIRE_SIGNING")

option(
    "--with-unsigned-addon-scopes",
    nargs="+",
    choices=("app", "system"),
    help="Addon scopes where signature is not required",
)


@depends("--with-unsigned-addon-scopes")
def unsigned_addon_scopes(scopes):
    return namespace(
        app="app" in scopes or None,
        system="system" in scopes or None,
    )


set_config("MOZ_UNSIGNED_APP_SCOPE", unsigned_addon_scopes.app)
set_config("MOZ_UNSIGNED_SYSTEM_SCOPE", unsigned_addon_scopes.system)


# Addon sideloading
# ==============================================================
option(
    "--allow-addon-sideload",
    default=milestone.is_esr,
    help="Addon sideloading is allowed",
)


set_config("MOZ_ALLOW_ADDON_SIDELOAD", True, when="--allow-addon-sideload")

# WebExtensions API WebIDL bindings
# ==============================================================


@depends(milestone)
def extensions_webidl_bindings_default(milestone):
    # Only enable the webidl bindings for the WebExtensions APIs
    # in Nightly.
    return milestone.is_nightly


option(
    "--enable-extensions-webidl-bindings",
    default=extensions_webidl_bindings_default,
    help="{Enable|Disable} building experimental WebExtensions WebIDL bindings",
)


@depends("--enable-extensions-webidl-bindings")
def extensions_webidl_enabled(value):
    return bool(value)


set_config("MOZ_WEBEXT_WEBIDL_ENABLED", extensions_webidl_enabled)

# Launcher process (Windows only)
# ==============================================================


@depends(target)
def launcher_process_default(target):
    return target.os == "WINNT"


option(
    "--enable-launcher-process",
    default=launcher_process_default,
    help="{Enable|Disable} launcher process by default",
)


@depends("--enable-launcher-process", target)
def launcher(value, target):
    enabled = bool(value)
    if enabled and target.os != "WINNT":
        die("Cannot enable launcher process on %s", target.os)
    if enabled:
        return True


set_config("MOZ_LAUNCHER_PROCESS", launcher)
set_define("MOZ_LAUNCHER_PROCESS", launcher)

# llvm-dlltool (Windows only)
# ==============================================================


@depends(build_project, target, "--enable-compile-environment")
def check_for_llvm_dlltool(build_project, target, compile_environment):
    if build_project != "browser":
        return

    if target.os != "WINNT":
        return

    return compile_environment


llvm_dlltool = check_prog(
    "LLVM_DLLTOOL",
    ("llvm-dlltool",),
    what="llvm-dlltool",
    when=check_for_llvm_dlltool,
    paths=clang_search_path,
)


@depends(target, when=llvm_dlltool)
def llvm_dlltool_flags(target):
    arch = {
        "x86": "i386",
        "x86_64": "i386:x86-64",
        "aarch64": "arm64",
    }[target.cpu]

    return ["-m", arch]


set_config("LLVM_DLLTOOL_FLAGS", llvm_dlltool_flags)

# BITS download (Windows only)
# ==============================================================

option(
    "--enable-bits-download",
    when=target_is_windows,
    default=target_is_windows,
    help="{Enable|Disable} building BITS download support",
)

set_define(
    "MOZ_BITS_DOWNLOAD",
    depends_if("--enable-bits-download", when=target_is_windows)(lambda _: True),
)
set_config(
    "MOZ_BITS_DOWNLOAD",
    depends_if("--enable-bits-download", when=target_is_windows)(lambda _: True),
)

# Bundled fonts on desktop platform
# ==============================================================


@depends(target)
def bundled_fonts_default(target):
    return target.os == "WINNT" or target.kernel == "Linux"


@depends(build_project)
def allow_bundled_fonts(project):
    return project == "browser" or project == "comm/mail"


option(
    "--enable-bundled-fonts",
    default=bundled_fonts_default,
    when=allow_bundled_fonts,
    help="{Enable|Disable} support for bundled fonts on desktop platforms",
)

set_define(
    "MOZ_BUNDLED_FONTS",
    depends_if("--enable-bundled-fonts", when=allow_bundled_fonts)(lambda _: True),
)

# Reflow counting
# ==============================================================


@depends(moz_debug)
def reflow_perf(debug):
    if debug:
        return True


option(
    "--enable-reflow-perf",
    default=reflow_perf,
    help="{Enable|Disable} reflow performance tracing",
)

# The difference in conditions here comes from the initial implementation
# in old-configure, which was unexplained there as well.
set_define("MOZ_REFLOW_PERF", depends_if("--enable-reflow-perf")(lambda _: True))
set_define("MOZ_REFLOW_PERF_DSP", reflow_perf)

# Layout debugger
# ==============================================================


@depends(moz_debug)
def layout_debugger(debug):
    if debug:
        return True


option(
    "--enable-layout-debugger",
    default=layout_debugger,
    help="{Enable|Disable} layout debugger",
)

set_config("MOZ_LAYOUT_DEBUGGER", True, when="--enable-layout-debugger")
set_define("MOZ_LAYOUT_DEBUGGER", True, when="--enable-layout-debugger")


# Shader Compiler for Windows (and MinGW Cross Compile)
# ==============================================================

with only_when(compile_environment):
    fxc = check_prog(
        "FXC",
        ("fxc.exe", "fxc2.exe"),
        when=depends(target)(lambda t: t.kernel == "WINNT"),
        paths=sdk_bin_path,
    )


# VPX
# ===

with only_when(compile_environment):
    system_lib_option(
        "--with-system-libvpx", help="Use system libvpx (located with pkgconfig)"
    )

    with only_when("--with-system-libvpx"):
        vpx = pkg_check_modules("MOZ_LIBVPX", "vpx >= 1.8.0")

        check_header(
            "vpx/vpx_decoder.h",
            flags=vpx.cflags,
            onerror=lambda: die(
                "Couldn't find vpx/vpx_decoder.h, which is required to build "
                "with system libvpx. Use --without-system-libvpx to build "
                "with in-tree libvpx."
            ),
        )

        check_symbol(
            "vpx_codec_dec_init_ver",
            flags=vpx.libs,
            onerror=lambda: die(
                "--with-system-libvpx requested but symbol vpx_codec_dec_init_ver "
                "not found"
            ),
        )

        set_config("MOZ_SYSTEM_LIBVPX", True)

    @depends("--with-system-libvpx", target)
    def in_tree_vpx(system_libvpx, target):
        if system_libvpx:
            return

        arm_asm = (target.cpu == "arm") or None
        return namespace(arm_asm=arm_asm)

    @depends(target, when=in_tree_vpx)
    def vpx_nasm(target):
        if target.cpu in ("x86", "x86_64"):
            if target.kernel == "WINNT":
                # Version 2.03 is needed for automatic safeseh support.
                return namespace(version="2.03", what="VPX")
            return namespace(what="VPX")

    # Building with -mfpu=neon requires either the "softfp" or the
    # "hardfp" ABI. Depending on the compiler's default target, and the
    # CFLAGS, the default ABI might be neither, in which case it is the
    # "softfloat" ABI.
    # The "softfloat" ABI is binary-compatible with the "softfp" ABI, so
    # we can safely mix code built with both ABIs. So, if we detect
    # that compiling uses the "softfloat" ABI, force the use of the
    # "softfp" ABI instead.
    # Confusingly, the __SOFTFP__ preprocessor variable indicates the
    # "softfloat" ABI, not the "softfp" ABI.
    # Note: VPX_ASFLAGS is also used in CFLAGS.
    softfp = cxx_compiler.try_compile(
        body="""
        #ifndef __SOFTFP__
        #error "compiler target supports -mfpu=neon, so we don't have to add extra flags"
        #endif""",
        when=in_tree_vpx.arm_asm,
    )

    @depends(in_tree_vpx, vpx_nasm, softfp, target)
    def vpx_as_flags(vpx, vpx_nasm, softfp, target):
        flags = []
        if vpx and vpx.arm_asm:
            # These flags are a lie; they're just used to enable the requisite
            # opcodes; actual arch detection is done at runtime.
            flags = ["-march=armv7-a", "-mfpu=neon"]
            if softfp:
                flags.append("-mfloat-abi=softfp")
        elif vpx and vpx_nasm and target.os != "WINNT" and target.cpu != "x86_64":
            flags = ["-DPIC"]
        return flags

    set_config("VPX_USE_NASM", True, when=vpx_nasm)
    set_config("VPX_ASFLAGS", vpx_as_flags)


# JPEG
# ====

with only_when(compile_environment):
    system_lib_option(
        "--with-system-jpeg",
        nargs="?",
        help="Use system libjpeg (installed at given prefix)",
    )

    @depends_if("--with-system-jpeg")
    def jpeg_flags(value):
        if len(value):
            return namespace(
                cflags=("-I%s/include" % value[0],),
                ldflags=("-L%s/lib" % value[0], "-ljpeg"),
            )
        return namespace(
            ldflags=("-ljpeg",),
        )

    with only_when("--with-system-jpeg"):
        check_symbol(
            "jpeg_destroy_compress",
            flags=jpeg_flags.ldflags,
            onerror=lambda: die(
                "--with-system-jpeg requested but symbol "
                "jpeg_destroy_compress not found."
            ),
        )

        c_compiler.try_compile(
            includes=[
                "stdio.h",
                "sys/types.h",
                "jpeglib.h",
            ],
            body="""
                #if JPEG_LIB_VERSION < 62
                #error Insufficient JPEG library version
                #endif
            """,
            flags=jpeg_flags.cflags,
            check_msg="for sufficient jpeg library version",
            onerror=lambda: die(
                "Insufficient JPEG library version for "
                "--with-system-jpeg (62 required)"
            ),
        )

        c_compiler.try_compile(
            includes=[
                "stdio.h",
                "sys/types.h",
                "jpeglib.h",
            ],
            body="""
                #ifndef JCS_EXTENSIONS
                #error libjpeg-turbo JCS_EXTENSIONS required
                #endif
            """,
            flags=jpeg_flags.cflags,
            check_msg="for sufficient libjpeg-turbo JCS_EXTENSIONS",
            onerror=lambda: die(
                "libjpeg-turbo JCS_EXTENSIONS required for " "--with-system-jpeg"
            ),
        )

        set_config("MOZ_JPEG_CFLAGS", jpeg_flags.cflags)
        set_config("MOZ_JPEG_LIBS", jpeg_flags.ldflags)

    @depends("--with-system-jpeg", target)
    def in_tree_jpeg_arm(system_jpeg, target):
        if system_jpeg:
            return

        if target.cpu == "arm":
            return ("-march=armv7-a", "-mfpu=neon")
        elif target.cpu == "aarch64":
            return ("-march=armv8-a",)

    @depends("--with-system-jpeg", target)
    def in_tree_jpeg(system_jpeg, target):
        if system_jpeg:
            return

        if target.cpu == "arm":
            return ("-march=armv7-a", "-mfpu=neon")
        elif target.cpu == "aarch64":
            return ("-march=armv8-a",)
        elif target.kernel == "Darwin":
            if target.cpu == "x86":
                return ("-DPIC", "-DMACHO")
            elif target.cpu == "x86_64":
                return ("-D__x86_64__", "-DPIC", "-DMACHO")
        elif target.kernel == "WINNT":
            if target.cpu == "x86":
                return ("-DPIC", "-DWIN32")
            elif target.cpu == "x86_64":
                return ("-D__x86_64__", "-DPIC", "-DWIN64", "-DMSVC")
        elif target.cpu == "mips32":
            return ("-mdspr2",)
        elif target.cpu == "mips64":
            return ("-Wa,-mloongson-mmi", "-mloongson-ext")
        elif target.cpu == "x86":
            return ("-DPIC", "-DELF")
        elif target.cpu == "x86_64":
            return ("-D__x86_64__", "-DPIC", "-DELF")

    @depends(target, when=in_tree_jpeg)
    def jpeg_nasm(target):
        if target.cpu in ("x86", "x86_64"):
            # libjpeg-turbo 2.0.6 requires nasm 2.10.
            return namespace(version="2.10", what="JPEG")

    jpeg_arm_neon_vld1_s16_x3 = c_compiler.try_compile(
        includes=["arm_neon.h"],
        body="int16_t input[12] = {}; int16x4x3_t output = vld1_s16_x3(input);",
        check_msg="for vld1_s16_x3 in arm_neon.h",
        flags=in_tree_jpeg_arm,
        when=in_tree_jpeg_arm,
    )

    jpeg_arm_neon_vld1_u16_x2 = c_compiler.try_compile(
        includes=["arm_neon.h"],
        body="uint16_t input[8] = {}; uint16x4x2_t output = vld1_u16_x2(input);",
        check_msg="for vld1_u16_x2 in arm_neon.h",
        flags=in_tree_jpeg_arm,
        when=in_tree_jpeg_arm,
    )

    jpeg_arm_neon_vld1q_u8_x4 = c_compiler.try_compile(
        includes=["arm_neon.h"],
        body="uint8_t input[64] = {}; uint8x16x4_t output = vld1q_u8_x4(input);",
        check_msg="for vld1q_u8_x4 in arm_neon.h",
        flags=in_tree_jpeg_arm,
        when=in_tree_jpeg_arm,
    )

    set_config("LIBJPEG_TURBO_USE_NASM", True, when=jpeg_nasm)
    set_config("LIBJPEG_TURBO_SIMD_FLAGS", in_tree_jpeg)
    set_config("LIBJPEG_TURBO_HAVE_VLD1_S16_X3", jpeg_arm_neon_vld1_s16_x3)
    set_config("LIBJPEG_TURBO_HAVE_VLD1_U16_X2", jpeg_arm_neon_vld1_u16_x2)
    set_config("LIBJPEG_TURBO_HAVE_VLD1Q_U8_X4", jpeg_arm_neon_vld1q_u8_x4)
    set_config(
        "LIBJPEG_TURBO_NEON_INTRINSICS",
        jpeg_arm_neon_vld1_s16_x3
        & jpeg_arm_neon_vld1_u16_x2
        & jpeg_arm_neon_vld1q_u8_x4,
    )


# FFmpeg's ffvpx configuration
# ==============================================================
with only_when(compile_environment):

    @depends(target)
    def libav_fft(target):
        return target.kernel == "WINNT" or target.cpu == "x86_64"

    set_config("MOZ_LIBAV_FFT", depends(when=libav_fft)(lambda: True))
    set_define("MOZ_LIBAV_FFT", depends(when=libav_fft)(lambda: True))


# Artifact builds need MOZ_FFVPX defined as if compilation happened.
with only_when(compile_environment | artifact_builds):

    @depends(target)
    def ffvpx(target):
        enable = use_nasm = True
        flac_only = False
        flags = []

        if target.kernel == "WINNT":
            if target.cpu == "x86":
                # 32-bit windows need to prefix symbols with an underscore.
                flags = ["-DPIC", "-DWIN32", "-DPREFIX", "-Pconfig_win32.asm"]
            elif target.cpu == "x86_64":
                flags = [
                    "-D__x86_64__",
                    "-DPIC",
                    "-DWIN64",
                    "-DMSVC",
                    "-Pconfig_win64.asm",
                ]
            elif target.cpu == "aarch64":
                flags = ["-DPIC", "-DWIN64"]
                use_nasm = False
        elif target.kernel == "Darwin":
            if target.cpu == "x86_64":
                # 32/64-bit macosx asemblers need to prefix symbols with an
                # underscore.
                flags = [
                    "-D__x86_64__",
                    "-DPIC",
                    "-DMACHO",
                    "-DPREFIX",
                    "-Pconfig_darwin64.asm",
                ]
            else:
                flac_only = True
        elif target.cpu == "x86_64":
            flags = ["-D__x86_64__", "-DPIC", "-DELF", "-Pconfig_unix64.asm"]
        elif target.cpu in ("x86", "arm", "aarch64"):
            flac_only = True
        else:
            enable = False

        if flac_only or not enable:
            use_nasm = False

        if use_nasm:
            # default disabled components
            flags.append("-Pdefaults_disabled.asm")

        return namespace(
            enable=enable,
            use_nasm=use_nasm,
            flac_only=flac_only,
            flags=flags,
        )

    @depends(when=ffvpx.use_nasm)
    def ffvpx_nasm():
        # nasm 2.10 for AVX-2 support.
        return namespace(version="2.10", what="FFVPX")

    # ffvpx_nasm can't indirectly depend on vpx_as_flags, because it depends
    # on a compiler test, so we have to do a little bit of dance here.
    @depends(ffvpx, vpx_as_flags, target)
    def ffvpx(ffvpx, vpx_as_flags, target):
        if ffvpx and vpx_as_flags and target.cpu in ("arm", "aarch64"):
            ffvpx.flags.extend(vpx_as_flags)
        return ffvpx

    set_config("MOZ_FFVPX", True, when=ffvpx.enable)
    set_define("MOZ_FFVPX", True, when=ffvpx.enable)
    set_config("MOZ_FFVPX_AUDIOONLY", True, when=ffvpx.flac_only)
    set_define("MOZ_FFVPX_AUDIOONLY", True, when=ffvpx.flac_only)
    set_config("FFVPX_ASFLAGS", ffvpx.flags)
    set_config("FFVPX_USE_NASM", True, when=ffvpx.use_nasm)


# nasm detection
# ==============================================================
@depends(dav1d_nasm, vpx_nasm, jpeg_nasm, ffvpx_nasm, when=compile_environment)
def need_nasm(*requirements):
    requires = {
        x.what: x.version if hasattr(x, "version") else True for x in requirements if x
    }
    if requires:
        items = sorted(requires.keys())
        if len(items) > 1:
            what = " and ".join((", ".join(items[:-1]), items[-1]))
        else:
            what = items[0]
        versioned = {k: v for (k, v) in requires.items() if v is not True}
        return namespace(what=what, versioned=versioned)


nasm = check_prog(
    "NASM",
    ["nasm"],
    allow_missing=True,
    bootstrap="nasm",
    when=need_nasm,
)


@depends(nasm, need_nasm.what)
def check_nasm(nasm, what):
    if not nasm and what:
        die("Nasm is required to build with %s, but it was not found." % what)
    return nasm


@depends_if(check_nasm)
@checking("nasm version")
def nasm_version(nasm):
    version = (
        check_cmd_output(nasm, "-v", onerror=lambda: die("Failed to get nasm version."))
        .splitlines()[0]
        .split()[2]
    )
    return Version(version)


@depends(nasm_version, need_nasm.versioned, when=need_nasm.versioned)
def check_nasm_version(nasm_version, versioned):
    by_version = sorted(versioned.items(), key=lambda x: x[1])
    what, version = by_version[-1]
    if nasm_version < version:
        die(
            "Nasm version %s or greater is required to build with %s." % (version, what)
        )
    return nasm_version


@depends(target, when=check_nasm_version)
def nasm_asflags(target):
    asflags = {
        ("OSX", "x86"): ["-f", "macho32"],
        ("OSX", "x86_64"): ["-f", "macho64"],
        ("WINNT", "x86"): ["-f", "win32"],
        ("WINNT", "x86_64"): ["-f", "win64"],
    }.get((target.os, target.cpu), None)
    if asflags is None:
        # We're assuming every x86 platform we support that's
        # not Windows or Mac is ELF.
        if target.cpu == "x86":
            asflags = ["-f", "elf32"]
        elif target.cpu == "x86_64":
            asflags = ["-f", "elf64"]
    return asflags


set_config("NASM_ASFLAGS", nasm_asflags)


# ANGLE OpenGL->D3D translator for WebGL
# ==============================================================

with only_when(compile_environment & target_is_windows):

    def d3d_compiler_dll_result(value):
        if not value.path:
            return "provided by the OS"
        return value.path

    @depends(target, valid_windows_sdk_dir, fxc)
    @checking("for D3D compiler DLL", d3d_compiler_dll_result)
    @imports("os.path")
    def d3d_compiler_dll(target, windows_sdk_dir, fxc):
        suffix = {
            "x86_64": "x64",
        }.get(target.cpu, target.cpu)

        name = "d3dcompiler_47.dll"

        if target.cpu == "aarch64":
            # AArch64 Windows comes with d3dcompiler_47.dll installed
            return namespace(name=name, path=None)

        if windows_sdk_dir:
            path = os.path.join(windows_sdk_dir.path, "Redist", "D3D", suffix, name)
            error_extra = "in Windows SDK at {}".format(windows_sdk_dir.path)
        else:
            path = os.path.join(os.path.dirname(fxc), name)
            error_extra = "alongside FXC at {}".format(fxc)

        if os.path.exists(path):
            return namespace(name=name, path=path)
        die("Could not find {} {}".format(name, error_extra))

    set_config("MOZ_ANGLE_RENDERER", True)
    set_config(
        "MOZ_D3DCOMPILER_VISTA_DLL", d3d_compiler_dll.name, when=d3d_compiler_dll.path
    )
    set_config("MOZ_D3DCOMPILER_VISTA_DLL_PATH", d3d_compiler_dll.path)

# Remoting protocol support
# ==============================================================


@depends(toolkit)
def has_remote(toolkit):
    if toolkit in ("gtk", "windows", "cocoa"):
        return True


set_config("MOZ_HAS_REMOTE", has_remote)
set_define("MOZ_HAS_REMOTE", has_remote)

# RLBox Library Sandboxing wasm support
# ==============================================================


def wasm_sandboxing_libraries():
    return (
        "graphite",
        "ogg",
        "hunspell",
    )


@depends(dependable(wasm_sandboxing_libraries), target)
def default_wasm_sandboxing_libraries(libraries, target):
    non_default_libs = set()
    if target.bitness == 32:
        non_default_libs.add("hunspell")

    return tuple(l for l in libraries if l not in non_default_libs)


option(
    "--with-wasm-sandboxed-libraries",
    env="WASM_SANDBOXED_LIBRARIES",
    help="{Enable wasm sandboxing for the selected libraries|Disable wasm sandboxing}",
    nargs="+",
    choices=dependable(wasm_sandboxing_libraries),
    default=default_wasm_sandboxing_libraries,
)


@depends("--with-wasm-sandboxed-libraries")
def requires_wasm_sandboxing(libraries):
    if libraries:
        return True


set_config("MOZ_USING_WASM_SANDBOXING", requires_wasm_sandboxing)
set_define("MOZ_USING_WASM_SANDBOXING", requires_wasm_sandboxing)

with only_when(requires_wasm_sandboxing & compile_environment):
    option(
        "--with-wasi-sysroot",
        env="WASI_SYSROOT",
        nargs=1,
        help="Path to wasi sysroot for wasm sandboxing",
    )

    @depends("--with-wasi-sysroot", requires_wasm_sandboxing)
    def bootstrap_wasi_sysroot(wasi_sysroot, requires_wasm_sandboxing):
        return requires_wasm_sandboxing and not wasi_sysroot

    @depends(
        "--with-wasi-sysroot",
        bootstrap_path("sysroot-wasm32-wasi", when=bootstrap_wasi_sysroot),
        "--with-wasm-sandboxed-libraries",
    )
    @imports("os")
    def wasi_sysroot(wasi_sysroot, bootstrapped_sysroot, sandboxed_libs):
        if not wasi_sysroot:
            if not bootstrapped_sysroot:
                suggest_disable = ""
                if sandboxed_libs.origin == "default":
                    suggest_disable = (
                        " Or build with --without-wasm-sandboxed-libraries."
                    )
                die(
                    "Cannot find a wasi sysroot. Please give its location with "
                    "--with-wasi-sysroot." + suggest_disable
                )
            return bootstrapped_sysroot

        wasi_sysroot = wasi_sysroot[0]
        if not os.path.isdir(wasi_sysroot):
            die("Argument to --with-wasi-sysroot must be a directory")
        if not os.path.isabs(wasi_sysroot):
            die("Argument to --with-wasi-sysroot must be an absolute path")

        return wasi_sysroot

    set_config("WASI_SYSROOT", wasi_sysroot)

    def wasm_compiler_with_flags(compiler, sysroot):
        if not sysroot:
            return
        elif compiler:
            return (
                compiler.wrapper
                + [compiler.compiler]
                + compiler.flags
                + ["--sysroot=%s" % sysroot]
            )

    wasm_cc = compiler("C", wasm, other_compiler=c_compiler)

    @depends(wasm_cc, wasi_sysroot)
    def wasm_cc_with_flags(wasm_cc, wasi_sysroot):
        return wasm_compiler_with_flags(wasm_cc, wasi_sysroot)

    set_config("WASM_CC", wasm_cc_with_flags)

    wasm_cxx = compiler(
        "C++",
        wasm,
        c_compiler=wasm_cc,
        other_compiler=cxx_compiler,
        other_c_compiler=c_compiler,
    )

    @depends(wasm_cxx, wasi_sysroot)
    def wasm_cxx_with_flags(wasm_cxx, wasi_sysroot):
        return wasm_compiler_with_flags(wasm_cxx, wasi_sysroot)

    set_config("WASM_CXX", wasm_cxx_with_flags)

    wasm_compile_flags = dependable(
        ["-fno-exceptions", "-fno-strict-aliasing", "-Qunused-arguments"]
    )
    option(env="WASM_CFLAGS", nargs=1, help="Options to pass to WASM_CC")

    @depends("WASM_CFLAGS", wasm_compile_flags)
    def wasm_cflags(value, wasm_compile_flags):
        if value:
            return wasm_compile_flags + value
        else:
            return wasm_compile_flags

    set_config("WASM_CFLAGS", wasm_cflags)

    option(env="WASM_CXXFLAGS", nargs=1, help="Options to pass to WASM_CXX")

    @depends("WASM_CXXFLAGS", wasm_compile_flags)
    def wasm_cxxflags(value, wasm_compile_flags):
        if value:
            return wasm_compile_flags + value
        else:
            return wasm_compile_flags

    set_config("WASM_CXXFLAGS", wasm_cxxflags)


@depends("--with-wasm-sandboxed-libraries")
def wasm_sandboxing(libraries):
    if not libraries:
        return

    return namespace(**{name: True for name in libraries})


@template
def wasm_sandboxing_config_defines():
    for lib in wasm_sandboxing_libraries():
        set_config(
            "MOZ_WASM_SANDBOXING_%s" % lib.upper(), getattr(wasm_sandboxing, lib)
        )
        set_define(
            "MOZ_WASM_SANDBOXING_%s" % lib.upper(), getattr(wasm_sandboxing, lib)
        )


wasm_sandboxing_config_defines()


# new XULStore implementation
# ==============================================================


@depends(milestone)
def new_xulstore(milestone):
    if milestone.is_nightly:
        return True


set_config("MOZ_NEW_XULSTORE", True, when=new_xulstore)
set_define("MOZ_NEW_XULSTORE", True, when=new_xulstore)


# new Notification Store implementation
# ==============================================================


@depends(milestone)
def new_notification_store(milestone):
    if milestone.is_nightly:
        return True


set_config("MOZ_NEW_NOTIFICATION_STORE", True, when=new_notification_store)
set_define("MOZ_NEW_NOTIFICATION_STORE", True, when=new_notification_store)


# Glean SDK Integration Crate
# ==============================================================


@depends(target)
def glean_android(target):
    return target.os == "Android"


set_config("MOZ_GLEAN_ANDROID", True, when=glean_android)
set_define("MOZ_GLEAN_ANDROID", True, when=glean_android)


# dump_syms
# ==============================================================

check_prog(
    "DUMP_SYMS",
    ["dump_syms"],
    allow_missing=True,
    bootstrap="dump_syms",
    when=compile_environment,
)


check_prog(
    "PDBSTR",
    ["pdbstr.exe"],
    allow_missing=True,
    bootstrap="pdbstr",
    when=compile_environment & target_is_windows,
)


@depends("MOZ_AUTOMATION", c_compiler)
def allow_missing_winchecksec(automation, c_compiler):
    if not automation:
        return True
    if c_compiler and c_compiler.type != "clang-cl":
        return True


check_prog(
    "WINCHECKSEC",
    ["winchecksec.exe", "winchecksec"],
    bootstrap="winchecksec",
    allow_missing=allow_missing_winchecksec,
    when=compile_environment & target_is_windows,
)

# Fork server
@depends(target, build_project)
def forkserver_default(target, build_project):
    return build_project == "browser" and (
        (target.os == "GNU" and target.kernel == "Linux")
        or target.os == "FreeBSD"
        or target.os == "OpenBSD"
    )


option(
    "--enable-forkserver",
    default=forkserver_default,
    env="MOZ_ENABLE_FORKSERVER",
    help="{Enable|Disable} fork server",
)


@depends("--enable-forkserver", target)
def forkserver_flag(value, target):
    if (
        target.os == "Android"
        or (target.os == "GNU" and target.kernel == "Linux")
        or target.os == "FreeBSD"
        or target.os == "OpenBSD"
    ):
        return bool(value)
    pass


set_config("MOZ_ENABLE_FORKSERVER", forkserver_flag)
set_define("MOZ_ENABLE_FORKSERVER", forkserver_flag, forkserver_flag)

# Crash Reporter
# ==============================================================

with only_when(compile_environment & target_is_linux):
    # Check if we need to use the breakpad_getcontext fallback.
    getcontext = check_symbol("getcontext")
    set_config("HAVE_GETCONTEXT", getcontext)
    set_define("HAVE_GETCONTEXT", getcontext)

# NSS
# ==============================================================
include("../build/moz.configure/nss.configure")


# Enable or disable running in background task mode: headless for
# periodic, short-lived, maintenance tasks.
# ==============================================================================


option(
    "--disable-backgroundtasks",
    help="Disable running in background task mode",
)


set_config(
    "MOZ_BACKGROUNDTASKS", depends_if("--enable-backgroundtasks")(lambda _: True)
)


# Update-related programs: updater, maintenance service, update agent,
# default browser agent.
# ==============================================================
include("../build/moz.configure/update-programs.configure")


# Mobile optimizations
# ==============================================================
option(
    "--enable-mobile-optimize",
    default=target_is_android,
    help="{Enable|Disable} mobile optimizations",
)

set_define("MOZ_GFX_OPTIMIZE_MOBILE", True, when="--enable-mobile-optimize")
# We ignore "paint will resample" on mobile for performance.
# We may want to revisit this later.
set_define("MOZ_IGNORE_PAINT_WILL_RESAMPLE", True, when="--enable-mobile-optimize")

# Pref extensions
# ==============================================================
option("--disable-pref-extensions", help="Disable pref extensions such as autoconfig")
set_config("MOZ_PREF_EXTENSIONS", True, when="--enable-pref-extensions")

# Offer a way to disable the startup cache
# ==============================================================
option("--disable-startupcache", help="Disable startup cache")


@depends("--enable-startupcache")
def enable_startupcache(value):
    if value:
        return True


set_define(
    "MOZ_DISABLE_STARTUPCACHE", True, when=depends(enable_startupcache)(lambda x: not x)
)


# Branding
# ==============================================================
option(
    env="MOZ_APP_REMOTINGNAME",
    nargs=1,
    help="Used for the internal program name, which affects profile name "
    "and remoting. If not set, defaults to MOZ_APP_NAME.",
)


@depends("MOZ_APP_REMOTINGNAME", moz_app_name)
def moz_app_remotingname(value, moz_app_name):
    if value:
        return value[0]
    return moz_app_name


set_config("MOZ_APP_REMOTINGNAME", moz_app_remotingname)

option(
    env="ANDROID_PACKAGE_NAME",
    nargs=1,
    help="Name of the Android package (default org.mozilla.$MOZ_APP_NAME)",
)


@depends("ANDROID_PACKAGE_NAME", moz_app_name)
def android_package_name(value, moz_app_name):
    if value:
        return value[0]
    if moz_app_name == "fennec":
        return "org.mozilla.fennec_aurora"
    return "org.mozilla.%s" % moz_app_name


set_config("ANDROID_PACKAGE_NAME", android_package_name)


# Miscellaneous options
# ==============================================================
option(env="MOZ_WINCONSOLE", nargs="?", help="Whether we can create a console window.")
set_define("MOZ_WINCONSOLE", True, when=depends("MOZ_WINCONSOLE")(lambda x: x))

option(
    env="MOZ_USE_NATIVE_POPUP_WINDOWS",
    default=target_is_android,
    help="Whether to use native popup windows",
)

set_define("MOZ_USE_NATIVE_POPUP_WINDOWS", True, when="MOZ_USE_NATIVE_POPUP_WINDOWS")


# Alternative Crashreporter setting
option(
    "--with-crashreporter-url",
    env="MOZ_CRASHREPORTER_URL",
    default="https://crash-reports.mozilla.com/",
    nargs=1,
    help="Set an alternative crashreporter url",
)

set_config(
    "MOZ_CRASHREPORTER_URL",
    depends("--with-crashreporter-url")(lambda x: x[0].rstrip("/")),
)


# Crash reporter options
# ==============================================================
@depends(target)
def oxidized_breakpad(target):
    if target.kernel == "Linux" and target.os != "Android":
        return target.cpu in ("x86", "x86_64")
    return False


set_config("MOZ_OXIDIZED_BREAKPAD", True, when=oxidized_breakpad)
set_define("MOZ_OXIDIZED_BREAKPAD", True, when=oxidized_breakpad)


# Wine
# ==============================================================
@depends(target, host)
def want_wine(target, host):
    return target.kernel == "WINNT" and host.kernel != "WINNT"


wine = check_prog(
    "WINE",
    ["wine64", "wine"],
    when=want_wine,
    bootstrap="wine/bin",
)

# DOM Streams
# ==============================================================
option(
    "--enable-dom-streams",
    help="Enable the DOM Streams prototype",
)

set_config("MOZ_DOM_STREAMS", True, when="--enable-dom-streams")
set_define("MOZ_DOM_STREAMS", True, when="--enable-dom-streams")