Quelle  moz.configure   Sprache: unbekannt

# 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/.

include("build/moz.configure/init.configure")

# Note:
# - Gecko-specific options and rules should go in toolkit/moz.configure.
# - Firefox-specific options and rules should go in browser/moz.configure.
# - Fennec-specific options and rules should go in
#   mobile/android/moz.configure.
# - Spidermonkey-specific options and rules should go in js/moz.configure.
# - etc.

imply_option(
    "--enable-artifact-build-symbols",
    depends(artifact_builds)(lambda v: False if v is None else None),
    reason="--disable-artifact-builds",
)

option(
    "--enable-artifact-build-symbols",
    nargs="?",
    choices=("full",),
    help="Download symbols when artifact builds are enabled",
)


@depends("--enable-artifact-build-symbols", moz_automation, target)
def enable_artifact_build_symbols(value, automation, target):
    if len(value):
        return value[0]
    if bool(value):
        if target.os == "Android" and not automation:
            return "full"
        return True
    return None


set_config("MOZ_ARTIFACT_BUILD_SYMBOLS", enable_artifact_build_symbols)


@depends("--enable-artifact-builds", build_project)
def imply_disable_compile_environment(value, build_project):
    if value or build_project == "browser/extensions":
        return False


option(
    env="MOZ_BUILD_HOOK",
    nargs=1,
    help="Path to the moz.build file that will be executed as if it were "
    "appended to every moz.build in the tree",
)


@depends_if("MOZ_BUILD_HOOK")
@imports("os")
def moz_build_hook(value):
    if not os.path.exists(value[0]):
        die(f"MOZ_BUILD_HOOK set to {value[0]} but the file doesn't exist")
    return os.path.abspath(value[0])


set_config("MOZ_BUILD_HOOK", moz_build_hook)


option(
    env="MOZ_COPY_PDBS",
    help="For builds that do not support symbols in the normal fashion,"
    " generate and copy them into the resulting build archive",
)

set_config("MOZ_COPY_PDBS", depends_if("MOZ_COPY_PDBS")(lambda _: True))

imply_option(
    "--enable-compile-environment", imply_disable_compile_environment, reason="default"
)

option("--disable-compile-environment", help="Disable compiler/library checks")


@depends("--disable-compile-environment")
def compile_environment(compile_env):
    if compile_env:
        return True


set_config("COMPILE_ENVIRONMENT", compile_environment)

option("--disable-tests", help="Do not build test libraries & programs")


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


set_config("ENABLE_TESTS", enable_tests)
set_define("ENABLE_TESTS", enable_tests)


@depends(enable_tests)
def gtest_has_rtti(value):
    if value:
        return "0"


set_define("GTEST_HAS_RTTI", gtest_has_rtti)


@depends(target, enable_tests)
def linux_gtest_defines(target, enable_tests):
    if enable_tests and target.os == "Android":
        return namespace(os_linux_android=True, use_own_tr1_tuple=True, has_clone="0")


set_define("GTEST_OS_LINUX_ANDROID", linux_gtest_defines.os_linux_android)
set_define("GTEST_USE_OWN_TR1_TUPLE", linux_gtest_defines.use_own_tr1_tuple)
set_define("GTEST_HAS_CLONE", linux_gtest_defines.has_clone)

set_define("FMT_API", "MFBT_API")
set_define("FMT_ENFORCE_COMPILE_STRING", 1)
set_define("FMT_USE_EXCEPTIONS", 0)
set_define("FMT_USE_WRITE_CONSOLE", 1)
set_define("FMT_USE_LOCALE", 0)

option(
    "--enable-debug",
    nargs="?",
    help="Enable building with developer debug info (using the given compiler flags)",
)


@depends("--enable-debug")
def moz_debug(debug):
    if debug:
        return bool(debug)


set_config("MOZ_DEBUG", moz_debug)
set_define("MOZ_DEBUG", moz_debug)


set_config(
    "MOZ_DIAGNOSTIC_ASSERT_ENABLED",
    True,
    when=moz_debug | milestone.is_early_beta_or_earlier,
)
set_define(
    "MOZ_DIAGNOSTIC_ASSERT_ENABLED",
    True,
    when=moz_debug | milestone.is_early_beta_or_earlier,
)

option(
    "--with-debug-label",
    nargs="+",
    help="Debug DEBUG_<value> for each comma-separated value given",
)


@depends(moz_debug, "--with-debug-label")
def debug_defines(debug, labels):
    if debug:
        return ["DEBUG"] + ["DEBUG_%s" % label for label in labels]
    return ["NDEBUG", "TRIMMED"]


set_config("MOZ_DEBUG_DEFINES", debug_defines)

option(env="MOZ_PGO", help="Build with profile guided optimizations")

set_config("MOZ_PGO", depends("MOZ_PGO")(lambda x: bool(x)))  # noqa: PLW0108


# Imply --enable-release when MOZILLA_OFFICIAL is set rather than adjusting the
# default so that we can't have both MOZILLA_OFFICIAL and --disable-release set.
imply_option("--enable-release", mozilla_official)

option(
    "--enable-release",
    default=milestone.is_release_or_beta | moz_automation,
    help="{Build|Do not build} with more conservative, release "
    "engineering-oriented options.{ This may slow down builds.|}",
)


@depends("--enable-release")
def developer_options(value):
    if not value:
        return True


set_config("DEVELOPER_OPTIONS", developer_options)


# hybrid build handling
# ==============================================================

option(
    "--disable-unified-build",
    help="Enable building modules in non unified context",
)

set_config("ENABLE_UNIFIED_BUILD", True, when="--disable-unified-build")


include("build/moz.configure/bootstrap.configure")


# The execution model of the configure sandbox doesn't allow for
# check_prog to use bootstrap_search_path directly because check_prog
# comes first, so we use a trick to allow it. Uses of check_prog
# happening before here won't allow bootstrap.


@template
def check_prog(*args, **kwargs):
    kwargs["bootstrap_search_path"] = bootstrap_search_path
    return check_prog(*args, **kwargs)


include("build/moz.configure/toolchain.configure", when="--enable-compile-environment")

include("build/moz.configure/pkg.configure")
include("build/moz.configure/memory.configure", when="--enable-compile-environment")
include("build/moz.configure/headers.configure", when="--enable-compile-environment")
include("build/moz.configure/libraries.configure", when="--enable-compile-environment")
include("build/moz.configure/warnings.configure", when="--enable-compile-environment")
include("build/moz.configure/flags.configure", when="--enable-compile-environment")
include("build/moz.configure/default-flags.configure", when=~compile_environment)
include("build/moz.configure/lto-pgo.configure", when="--enable-compile-environment")
# rust.configure is included by js/moz.configure.


option("--enable-valgrind", help="Enable Valgrind integration hooks")

valgrind_h = check_header("valgrind/valgrind.h", when="--enable-valgrind")


@depends("--enable-valgrind", valgrind_h)
def check_valgrind(valgrind, valgrind_h):
    if valgrind:
        if not valgrind_h:
            die("--enable-valgrind specified but Valgrind is not installed")
        return True


set_define("MOZ_VALGRIND", check_valgrind)
set_config("MOZ_VALGRIND", check_valgrind)


@depends(target, host)
def is_openbsd(target, host):
    return target.kernel == "OpenBSD" or host.kernel == "OpenBSD"


option(
    env="SO_VERSION",
    nargs=1,
    default="1.0",
    when=is_openbsd,
    help="Shared library version for OpenBSD systems",
)


@depends("SO_VERSION", when=is_openbsd)
def so_version(value):
    return value


@template
def library_name_info_template(host_or_target):
    assert host_or_target in {host, target}
    windows_abi = {
        host: host.abi,
        target: target.abi,
    }[host_or_target]

    @depends(host_or_target, host_or_target.abi | windows_abi, so_version)
    def library_name_info_impl(host_or_target, windows_abi, so_version):
        if host_or_target.kernel == "WINNT":
            # There aren't artifacts for mingw builds, so it's OK that the
            # results are inaccurate in that case.
            if windows_abi and windows_abi != "msvc":
                return namespace(
                    dll=namespace(prefix="", suffix=".dll"),
                    lib=namespace(prefix="lib", suffix="a"),
                    import_lib=namespace(prefix="lib", suffix="a"),
                    obj=namespace(prefix="", suffix="o"),
                )

            return namespace(
                dll=namespace(prefix="", suffix=".dll"),
                lib=namespace(prefix="", suffix="lib"),
                import_lib=namespace(prefix="", suffix="lib"),
                obj=namespace(prefix="", suffix="obj"),
            )

        elif host_or_target.kernel == "Darwin":
            return namespace(
                dll=namespace(prefix="lib", suffix=".dylib"),
                lib=namespace(prefix="lib", suffix="a"),
                import_lib=namespace(prefix=None, suffix=""),
                obj=namespace(prefix="", suffix="o"),
            )
        elif so_version:
            so = ".so.%s" % so_version
        else:
            so = ".so"

        return namespace(
            dll=namespace(prefix="lib", suffix=so),
            lib=namespace(prefix="lib", suffix="a"),
            import_lib=namespace(prefix=None, suffix=""),
            obj=namespace(prefix="", suffix="o"),
        )

    return library_name_info_impl


host_library_name_info = library_name_info_template(host)
library_name_info = library_name_info_template(target)

set_config("DLL_PREFIX", library_name_info.dll.prefix)
set_config("DLL_SUFFIX", library_name_info.dll.suffix)
set_config("HOST_DLL_PREFIX", host_library_name_info.dll.prefix)
set_config("HOST_DLL_SUFFIX", host_library_name_info.dll.suffix)
set_config("LIB_PREFIX", library_name_info.lib.prefix)
set_config("LIB_SUFFIX", library_name_info.lib.suffix)
set_config("OBJ_SUFFIX", library_name_info.obj.suffix)
set_config("IMPORT_LIB_SUFFIX", library_name_info.import_lib.suffix)
set_define(
    "MOZ_DLL_PREFIX", depends(library_name_info.dll.prefix)(lambda s: '"%s"' % s)
)
set_define(
    "MOZ_DLL_SUFFIX", depends(library_name_info.dll.suffix)(lambda s: '"%s"' % s)
)
set_config("HOST_LIB_PREFIX", host_library_name_info.lib.prefix)
set_config("HOST_IMPORT_LIB_SUFFIX", host_library_name_info.import_lib.suffix)
set_config("WASM_OBJ_SUFFIX", "wasm")


@template
def bin_suffix(host_or_target):
    return depends(host_or_target)(
        lambda host_or_target: ".exe" if host_or_target.os == "WINNT" else ""
    )


set_config("BIN_SUFFIX", bin_suffix(target))
set_config("HOST_BIN_SUFFIX", bin_suffix(host))


@template
def plain_llvm_or_prefixed(name, llvm_name=None):
    # look for a tool, using the following alternatives, in that order:
    # 1. llvm-${llvm_name}, or llvm-${name} if ${llvm_name} is not provided
    # 2. ${toolchain_prefix}${name}
    # 3. ${name}

    @depends(llvm_tool(f"llvm-{llvm_name or name}"), toolchain_prefix)
    def plain_llvm_or_prefixed(llvm_tool, toolchain_prefix):
        commands = [llvm_tool[0], name]
        for prefix in toolchain_prefix or ():
            commands.insert(1, f"{prefix}{name}")
        return tuple(commands)

    return plain_llvm_or_prefixed


def validate_readelf(path):
    # llvm-readelf from llvm < 8 doesn't support the GNU binutils-compatible `-d`
    # flag. We could try running `$path -d $some_binary` but we might be cross
    # compiling and not have a binary at hand to run that against. `$path -d` alone
    # would fail whether the flag is supported or not. So we resort to look for the
    # option in the `--help` output, which fortunately, s compatible between
    # llvm-readelf and readelf.
    retcode, stdout, stderr = get_cmd_output(path, "--help")
    return retcode == 0 and any(l.startswith("  -d ") for l in stdout.splitlines())


@depends("--enable-compile-environment", target, host)
def readelf_when(compile_env, target, host):
    return compile_env and any(
        x.kernel not in ("Darwin", "WINNT") for x in (target, host)
    )


readelf = check_prog(
    "READELF",
    plain_llvm_or_prefixed("readelf"),
    when=readelf_when,
    paths=clang_search_path,
    validate=validate_readelf,
)


def validate_objcopy(path):
    if "llvm-objcopy" not in path:
        return True
    # llvm-objcopy doesn't support --only-keep-debug before llvm 9.0.
    retcode, stdout, stderr = get_cmd_output(path, "--help")
    return retcode == 0 and any(
        l.startswith("  --only-keep-debug ") for l in stdout.splitlines()
    )


check_prog(
    "OBJCOPY",
    plain_llvm_or_prefixed("objcopy"),
    when=readelf_when,
    paths=clang_search_path,
    validate=validate_objcopy,
)


# Make `profiling` available to this file even when js/moz.configure
# doesn't end up included.
profiling = dependable(False)
# Same for js_standalone
js_standalone = dependable(False)
# Same for fold_libs
fold_libs = dependable(False)
# And dmd
dmd = dependable(False)

# Only available when toolkit/moz.configure is included
pack_relative_relocs_flags = dependable(False)
real_branding_directory = dependable(None)

include(include_project_configure)


@template
def load_keyvalue_file(location, filename):

    @depends(build_environment, location, "--help", when=location)
    @checking(f"if configuration file {filename} exists")
    # This gives access to the sandbox. Don't copy this blindly.
    @imports("__sandbox__")
    @imports(_from="mozbuild.configure", _import="confvars")
    @imports("os.path")
    def load_keyvalue_file_impl(build_env, location, help):
        file_path = os.path.join(build_env.topsrcdir, location, filename)
        if os.path.exists(file_path):
            helper = __sandbox__._helper
            # parse confvars
            try:
                keyvals = confvars.parse(file_path)
            except confvars.ConfVarsSyntaxError as e:
                die(str(e))
            for key, value in keyvals.items():
                # FIXME: remove test once we no longer load confvars from old-configure.
                if key in __sandbox__._options:
                    # ~= imply_option, but with an accurate origin
                    helper.add(f"{key}={value}", origin="confvars", args=helper._args)
            return file_path

    return load_keyvalue_file_impl


load_confvars = load_keyvalue_file(build_project, "confvars.sh")
load_brandvars = load_keyvalue_file(real_branding_directory, "configure.sh")


# Final flags validation and gathering
# -------------------------------------------------

include(
    "build/moz.configure/finalize-flags.configure", when="--enable-compile-environment"
)

# -------------------------------------------------


@depends("--help")
@imports(_from="mozbuild.backend", _import="backends")
def build_backends_choices(_):
    return tuple(backends)


@deprecated_option("--enable-build-backend", nargs="+", choices=build_backends_choices)
def build_backend(backends):
    if backends:
        return tuple("+%s" % b for b in backends)


imply_option("--build-backends", build_backend)


@depends(
    host,
    target,
    "--enable-artifact-builds",
    "--disable-compile-environment",
    "--enable-project",
    "--enable-application",
    "--help",
)
@imports("sys")
def build_backend_defaults(
    host,
    target,
    artifact_builds,
    compile_environment,
    project,
    application,
    _,
):
    if application:
        project = application[0]
    elif project:
        project = project[0]

    if artifact_builds:
        all_backends = ["FasterMake+RecursiveMake"]
    else:
        all_backends = ["RecursiveMake", "FasterMake"]
    if (
        host.os == "WINNT"
        and target.os == "WINNT"
        and compile_environment
        and project not in ("mobile/android", "memory", "tools/update-programs")
    ):
        all_backends.append("VisualStudio")
    if compile_environment and project not in ("memory", "tools/update-programs"):
        all_backends.append("Clangd")
    return tuple(all_backends) or None


option(
    "--build-backends",
    nargs="+",
    default=build_backend_defaults,
    choices=build_backends_choices,
    help="Build backends to generate",
)


@depends("--build-backends")
def build_backends(backends):
    return backends


set_config("BUILD_BACKENDS", build_backends)


# Determine whether to build the gtest xul. This happens in automation
# on Android and Desktop platforms with the exception of:
#  - Windows PGO, where linking xul-gtest.dll takes too long;
#  - Android other than x86_64, where gtest is not required.
@depends(
    build_project,
    target,
    moz_automation,
    enable_tests,
    when="--enable-compile-environment",
)
def build_gtest(build_project, target, automation, enable_tests):
    return bool(
        enable_tests
        and automation
        and build_project in ("browser", "comm/mail", "mobile/android")
        and not (target.os == "Android" and target.cpu != "x86_64")
    )


option(
    "--enable-gtest-in-build",
    default=build_gtest,
    help="{Enable|Force disable} building the gtest libxul during the build",
    when="--enable-compile-environment",
)

set_config("LINK_GTEST_DURING_COMPILE", True, when="--enable-gtest-in-build")

# Localization
# ==============================================================
option(
    "--enable-ui-locale",
    env="MOZ_UI_LOCALE",
    default="en-US",
    help="Select the user interface locale (default: en-US)",
)


@depends("--enable-ui-locale")
def moz_ui_locale(value):
    return value[0]


set_config("MOZ_UI_LOCALE", moz_ui_locale)


# clang-plugin location
# ==============================================================
include(
    "build/moz.configure/clang_plugin.configure", when="--enable-compile-environment"
)


# GNU make detection
# ==============================================================
option(env="GMAKE", nargs=1, help="Path to GNU Make")

option(env="MAKE", nargs=1, help="Path to GNU Make")


@depends(host)
def possible_makes(host):
    candidates = ["gmake", "make"]
    if host.kernel == "WINNT":
        candidates = ["mozmake", "mingw32-make"] + candidates
    return candidates


gmake = check_prog(
    "GMAKE",
    possible_makes,
    input=depends("GMAKE", "MAKE")(lambda g, m: g or m),
    bootstrap="mozmake",
)


@depends(gmake)
@checking("for gmake version")
def gmake_version(prog):
    out = check_cmd_output(prog, "--version")
    version_line = out.splitlines()[0]
    if not version_line.startswith("GNU Make"):
        die("GNU Make is required")
    return Version(version_line[8:].strip())


@depends(gmake_version)
def check_gmake_version(version):
    make_min_ver = Version("3.81")
    if version < make_min_ver:
        die(f"GNU Make {make_min_ver} or higher is required")


# watchman detection
# ==============================================================

option(env="WATCHMAN", nargs=1, help="Path to the watchman program")


@depends(host, "WATCHMAN")
@checking("for watchman", callback=lambda w: w.path if w else "not found")
def watchman(host, prog):
    # On Windows, `watchman` is only supported on 64-bit hosts.
    if host.os == "WINNT" and host.cpu != "x86_64":
        return

    if not prog:
        prog = find_program("watchman")

    if not prog:
        return

    # `watchman version` will talk to the Watchman daemon service.
    # This can hang due to permissions problems. e.g.
    # https://github.com/facebook/watchman/issues/376. So use
    # `watchman --version` to prevent a class of failures.
    out = check_cmd_output(prog, "--version", onerror=lambda: None)
    if out is None:
        return

    return namespace(path=prog, version=Version(out.strip()))


@depends_if(watchman)
@checking("for watchman version")
def watchman_version(w):
    return w.version


set_config("WATCHMAN", watchman.path)


@depends_all(hg_version, hg_config, watchman)
@checking("for watchman Mercurial integration")
@imports("os")
def watchman_hg(hg_version, hg_config, watchman):
    if hg_version < Version("3.8"):
        return "no (Mercurial 3.8+ required)"

    ext_enabled = False
    mode_disabled = False

    for k in ("extensions.fsmonitor", "extensions.hgext.fsmonitor"):
        if k in hg_config and hg_config[k] != "!":
            ext_enabled = True

    mode_disabled = hg_config.get("fsmonitor.mode") == "off"

    if not ext_enabled:
        return "no (fsmonitor extension not enabled)"
    if mode_disabled:
        return "no (fsmonitor.mode=off disables fsmonitor)"

    return True


# Miscellaneous programs
# ==============================================================
check_prog("XARGS", ("xargs",))


@depends(target)
def extra_programs(target):
    if target.kernel == "Darwin":
        return namespace(
            MKFSHFS=("newfs_hfs", "mkfs.hfsplus"),
            HFS_TOOL=("hfsplus",),
        )


check_prog("MKFSHFS", extra_programs.MKFSHFS, allow_missing=True)
check_prog("HFS_TOOL", extra_programs.HFS_TOOL, allow_missing=True)


nsis = check_prog(
    "MAKENSISU",
    ("makensis",),
    bootstrap="nsis/bin",
    allow_missing=True,
    when=target_is_windows,
)

# Make sure the version of makensis is up to date.


@depends_if(nsis)
@checking("for NSIS version")
@imports("re")
def nsis_version(nsis):
    nsis_min_version = "3.0b1"

    def onerror():
        return die("Failed to get nsis version.")

    out = check_cmd_output(nsis, "-version", onerror=onerror)

    m = re.search(r"(?<=v)[0-9]+\.[0-9]+((a|b|rc)[0-9]+)?", out)

    if not m:
        raise FatalCheckError("Unknown version of makensis")
    ver = Version(m.group(0))

    # Versions comparisons don't quite work well with beta versions, so ensure
    # it works for the non-beta version.
    if ver < nsis_min_version and (ver >= "3.0a" or ver < "3"):
        raise FatalCheckError(
            "To build the installer you must have NSIS"
            " version %s or greater in your path" % nsis_min_version
        )

    return ver


# And that makensis is 32-bit (but only on Windows).
@depends_if(nsis, when=depends(host)(lambda h: h.kernel == "WINNT"))
@checking("for 32-bit NSIS")
def nsis_binary_type(nsis):
    bin_type = windows_binary_type(nsis)
    if bin_type != "win32":
        raise FatalCheckError("%s is not a 32-bit Windows application" % nsis)

    return "yes"


# And any flags we have to give to makensis
@depends(host)
def nsis_flags(host):
    if host.kernel != "WINNT":
        return "-nocd"
    return ""


set_config("MAKENSISU_FLAGS", nsis_flags)

check_prog("7Z", ("7zz",), allow_missing=True, bootstrap="7zz", when=target_is_windows)


# UPX is used for compressing the Windows installer SFX stub.
# UPX currently does not support ARM64 PE binaries
# https://github.com/upx/upx/issues/650
@depends(target)
def need_upx(target):
    return target.os == "WINNT" and target.cpu != "aarch64"


check_prog("UPX", ("upx",), allow_missing=True, bootstrap="upx/bin", when=need_upx)


check_prog(
    "DSYMUTIL",
    llvm_tool("dsymutil"),
    when=compile_environment & target_is_darwin,
    paths=clang_search_path,
)


check_prog(
    "OTOOL",
    plain_llvm_or_prefixed("otool"),
    when=compile_environment & target_is_darwin,
    paths=clang_search_path,
)

check_prog(
    "INSTALL_NAME_TOOL",
    plain_llvm_or_prefixed("install_name_tool", llvm_name="install-name-tool"),
    when=compile_environment & target_is_darwin & js_standalone,
    paths=clang_search_path,
)

option(
    "--enable-strip",
    when=compile_environment,
    help="Enable stripping of libs & executables",
)

# This should be handled as a `when` once bug 1617793 is fixed.


@depends("--enable-strip", c_compiler, when=compile_environment)
def enable_strip(strip, c_compiler):
    if strip and c_compiler.type != "clang-cl":
        return True


set_config("ENABLE_STRIP", enable_strip)

option(
    "--disable-install-strip",
    when=compile_environment,
    help="Enable stripping of libs & executables when packaging",
)

# This should be handled as a `when` once bug 1617793 is fixed.


@depends("--enable-install-strip", c_compiler, when=compile_environment)
def enable_install_strip(strip, c_compiler):
    if strip and c_compiler.type != "clang-cl":
        return True


set_config("PKG_STRIP", enable_install_strip)


@depends("--enable-strip", "--enable-install-strip", when=compile_environment)
def strip(strip, install_strip):
    return strip or install_strip


option(env="STRIP_FLAGS", nargs=1, when=strip, help="Flags for the strip command")


@depends("STRIP_FLAGS", profiling, target, when=strip)
def strip_flags(flags, profiling, target):
    if flags:
        return flags[0].split()
    if profiling:
        # Only strip debug info and symbols when profiling is enabled, keeping
        # local symbols.
        if target.kernel == "Darwin":
            return ["-S"]
        elif target.os == "Android":
            # The tooling we use with Android supports detached symbols, and the
            # size increase caused by local symbols are too much for mobile. So,
            # don't restrict the amount of stripping with a flag.
            return
        else:
            return ["--strip-debug"]
    # Otherwise strip everything we can, which happens without flags on non-Darwin.
    # On Darwin, it tries to strip things it can't, so we need to limit its scope.
    elif target.kernel == "Darwin":
        return ["-x", "-S"]


set_config("STRIP_FLAGS", strip_flags)


def validate_strip(path):
    if "llvm-strip" not in path:
        return True
    # llvm-strip doesn't support -S before llvm 8.0.
    retcode, stdout, stderr = get_cmd_output(path, "--help")
    return retcode == 0 and any(l.startswith("  -S ") for l in stdout.splitlines())


@depends("--enable-compile-environment", target, host)
def strip_when(compile_env, target, host):
    return compile_env and any(x.kernel != "WINNT" for x in (target, host))


check_prog(
    "STRIP",
    plain_llvm_or_prefixed("strip"),
    when=strip_when,
    paths=clang_search_path,
    validate=validate_strip,
)


@depends(js_standalone, target)
def system_zlib_default(js_standalone, target):
    return (
        js_standalone
        and target.kernel not in ("WINNT", "Darwin")
        and target.os != "Android"
    )


option(
    "--with-system-zlib",
    nargs="?",
    default=system_zlib_default,
    help="{Use|Do not use} system libz",
    when=use_pkg_config,
)


@depends("--with-system-zlib", when=use_pkg_config)
def with_system_zlib_option(with_system_zlib):
    return with_system_zlib


@depends(with_system_zlib_option)
def deprecated_system_zlib_path(value):
    if value and len(value) == 1:
        die(
            "--with-system-zlib=PATH is not supported anymore. Please use "
            "--with-system-zlib and set any necessary pkg-config environment variable."
        )


pkg_check_modules("MOZ_ZLIB", "zlib >= 1.2.3", when="--with-system-zlib")

set_config("MOZ_SYSTEM_ZLIB", True, when="--with-system-zlib")

option(
    env="USE_LIBZ_RS",
    default=True,
    help="Use libz-rs-sys instead of zlib",
    when=toolkit & ~with_system_zlib_option,
)

set_config("USE_LIBZ_RS", True, when="USE_LIBZ_RS")

with only_when(cross_compiling):
    option(
        env="JS_BINARY",
        nargs=1,
        help="Host JavaScript runtime, if any, to use during cross compiles",
    )
    set_config("JS_BINARY", depends_if("JS_BINARY")(lambda value: value[0]))

# Please do not add configure checks from here on.


# Assuming no other option is declared after this function, handle the
# env options that were injected by mozconfig_options by creating dummy
# Option instances and having the sandbox's CommandLineHelper handle
# them. We only do so for options that haven't been declared so far,
# which should be a proxy for the options that old-configure handles
# and that we don't know anything about.
@depends("--help")
@imports("__sandbox__")
@imports(_from="mozbuild.configure.options", _import="Option")
def remaining_mozconfig_options(_):
    helper = __sandbox__._helper
    for arg in list(helper):
        if helper._origins[arg] != "mozconfig":
            continue
        name = arg.split("=", 1)[0]
        if name.isupper() and name not in __sandbox__._options:
            option = Option(env=name, nargs="*", help=name)
            helper.handle(option)


@depends(build_environment, configure_cache)
@imports(_import="json")
@imports(_from="pathlib", _import="Path")
def save_cache(build_environment, configure_cache):
    cache_file = Path(build_environment.topobjdir) / "configure.cache"

    with cache_file.open(mode="w") as fd:
        json.dump(configure_cache, fd, indent=4)


@depends(build_environment, build_project)
@imports("__sandbox__")
@imports(_from="os.path", _import="exists")
def config_status_deps(build_env, build_project):
    topsrcdir = build_env.topsrcdir
    topobjdir = build_env.topobjdir

    if not topobjdir.endswith("js/src"):
        extra_deps = [os.path.join(topobjdir, ".mozconfig.json")]
    else:
        # mozconfig changes may impact js configure.
        extra_deps = [os.path.join(topobjdir[:-7], ".mozconfig.json")]

    confvars = os.path.join(topsrcdir, build_project, "confvars.sh")
    if exists(confvars):
        extra_deps.append(confvars)

    return (
        list(__sandbox__._all_paths)
        + extra_deps
        + [
            os.path.join(topsrcdir, "CLOBBER"),
            os.path.join(topsrcdir, "configure"),
            os.path.join(topsrcdir, "js", "src", "configure"),
            os.path.join(topsrcdir, "nsprpub", "configure"),
            os.path.join(topsrcdir, "config", "milestone.txt"),
            os.path.join(topsrcdir, "browser", "config", "version.txt"),
            os.path.join(topsrcdir, "browser", "config", "version_display.txt"),
            os.path.join(topsrcdir, "python", "sites", "build.txt"),
            os.path.join(topsrcdir, "python", "sites", "common.txt"),
            os.path.join(topsrcdir, "python", "sites", "mach.txt"),
            os.path.join(topsrcdir, "python", "mach", "mach", "site.py"),
        ]
    )


set_config("CONFIG_STATUS_DEPS", config_status_deps)
# Please do not add anything after setting config_dep_paths.