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# -*- 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/.


@depends(toolchains_base_dir, "--help")
@imports(_from="os.path", _import="isdir")
@imports(_from="mozboot.android", _import="NDK_VERSION")
def default_android_ndk_root(toolchains_base_dir, _):
    for ndk in ("android-ndk-%s" % NDK_VERSION, "android-ndk"):
        path = os.path.join(toolchains_base_dir, ndk)
        if isdir(path):
            return path


option(
    "--with-android-ndk",
    nargs=1,
    default=default_android_ndk_root,
    help="location where the Android NDK can be found{|}",
)

option("--with-android-toolchain", nargs=1, help="location of the Android toolchain")

option(
    "--with-android-lldb-server", nargs=1, help="location of the Android LLDB server"
)

option(
    "--with-android-googlevr-sdk", nargs=1, help="location of the Android GoogleVR SDK"
)


@dependable
def min_android_version():
    # Sync with android_sdk_version
    return "21"


option(
    "--with-android-version",
    nargs=1,
    help="android platform version{|}",
    default=min_android_version,
)


@depends("--with-android-version", min_android_version)
@imports(_from="__builtin__", _import="ValueError")
def android_version(value, min_version):
    if not value:
        # Someone has passed --without-android-version.
        die("--with-android-version cannot be disabled.")

    try:
        version = int(value[0])
    except ValueError:
        die("--with-android-version expects an integer value")

    if version < int(min_version):
        die(
            "--with-android-version must be at least %s (got %s)", min_version, value[0]
        )

    return version


@depends("--with-android-ndk")
@imports(_from="os.path", _import="isdir")
def ndk(value):
    if value:
        if not isdir(value[0]):
            die(
                "The path you specified with --with-android-ndk (%s) is not "
                "a directory" % value[0]
            )
        return value[0]

    die(
        "You must specify --with-android-ndk=/path/to/ndk when targeting Android, "
        "or try |mach bootstrap|."
    )


set_config("ANDROID_NDK", ndk)


@depends(ndk)
@checking("for android ndk version")
@imports(_from="__builtin__", _import="open")
@imports(_from="mozboot.android", _import="NDK_VERSION")
@imports(_from="mozboot.android", _import="get_ndk_version")
@imports(_from="mozboot.android", _import="GetNdkVersionError")
def ndk_version(ndk):
    if not ndk:
        # Building 'js/src' for non-Android.
        return

    try:
        major, minor, human = get_ndk_version(ndk)
    except GetNdkVersionError as e:
        die(str(e))

    if NDK_VERSION != human:
        die(
            "The only supported version of the NDK is %s (have %s)\n"
            "Please run |mach bootstrap| "
            "to install the correct NDK." % (NDK_VERSION, human)
        )
    return namespace(
        major=major,
        minor=minor,
    )


set_config("ANDROID_NDK_MAJOR_VERSION", ndk_version.major)
set_config("ANDROID_NDK_MINOR_VERSION", ndk_version.minor)


@imports(_from="os.path", _import="isdir")
@imports(_from="mozbuild.shellutil", _import="quote")
def host_dir(host, base_dir):
    dir_format = "%s/%s-%s"
    host_kernel = "windows" if host.kernel == "WINNT" else host.kernel.lower()

    dir = dir_format % (base_dir, host_kernel, host.cpu)
    log.debug("Trying %s" % quote(dir))
    if not isdir(dir) and host.cpu == "x86_64":
        dir = dir_format % (base_dir, host_kernel, "x86")
        log.debug("Trying %s" % quote(dir))
    if not isdir(dir) and host.kernel == "Darwin" and host.cpu == "aarch64":
        dir = dir_format % (base_dir, host_kernel, "x86_64")
        log.debug("Trying %s" % quote(dir))
    if isdir(dir):
        return dir


@depends(host, ndk, "--with-android-toolchain")
@checking("for the Android toolchain directory", lambda x: x or "not found")
def android_toolchain(host, ndk, toolchain):
    if not ndk:
        return
    if toolchain:
        return toolchain[0]

    toolchain = host_dir(host, os.path.join(ndk, "toolchains", "llvm", "prebuilt"))
    if toolchain:
        return toolchain
    die("You have to specify --with-android-toolchain=" "/path/to/ndk/toolchain.")


@depends(target, android_toolchain)
@checking("for android sysroot directory")
@imports(_from="os.path", _import="isdir")
def android_sysroot(target, android_toolchain):
    if target.os != "Android":
        return

    search_dirs = [
        os.path.join(android_toolchain, "sysroot"),
    ]

    for sysroot_dir in search_dirs:
        if isdir(sysroot_dir):
            return sysroot_dir

    die(
        "Android sysroot directory not found in %s."
        % str([sysroot_dir for sysroot_dir in search_dirs])
    )


@depends(target, host, ndk, "--with-android-lldb-server")
@checking("for the Android LLDB server", lambda x: x or "not found")
@imports(_from="os", _import="listdir")
@imports(_from="os.path", _import="isdir")
@imports(_from="os.path", _import="isfile")
@imports(_from="mozbuild.shellutil", _import="quote")
def android_lldb_server(target, host, ndk, lldb):
    if not ndk:
        return
    if lldb:
        return lldb[0]
    else:
        clang_format = "toolchains/llvm/prebuilt/%s-%s/lib/clang"
        llvm_lib = "lib/linux"

        host_kernel = "windows" if host.kernel == "WINNT" else host.kernel.lower()
        clang_path = os.path.join(ndk, clang_format % (host_kernel, host.cpu))
        if not isdir(clang_path) and host.kernel == "Darwin" and host.cpu == "aarch64":
            clang_path = os.path.join(ndk, clang_format % (host_kernel, "x86_64"))
        log.debug("Listing subdirectories of %s" % quote(clang_path))
        clang_subdirs = [
            x for x in listdir(clang_path) if isdir(os.path.join(clang_path, x))
        ]
        log.debug("Got %r" % clang_subdirs)
        if len(clang_subdirs) == 0:
            die(
                "Could not resolve lldb-server in %s. Please specify --with-android-lldb-server=/path/to/android/lldb-server"
                % quote(clang_path)
            )
        sorted_versions = sorted(clang_subdirs, key=Version)
        highest_version = sorted_versions[-1]
        log.warning("Using highest version available: %s" % quote(highest_version))
        log.warning(
            " Available versions: "
            + ", ".join(str(version) for version in sorted_versions)
        )
        log.warning(
            "(To use an older version, please specify --with-android-lldb-server=/path/to/desired/android/lldb-server)"
        )

        if target.cpu == "x86":
            target_cpu = "i386"
        else:
            target_cpu = target.cpu

        full_path = os.path.join(
            clang_path, highest_version, llvm_lib, target_cpu, "lldb-server"
        )
        log.debug("Trying %s" % quote(full_path))

        if isfile(full_path):
            return full_path
        die("Please specify --with-android-lldb-server=/path/to/android/lldb-server")


set_config("ANDROID_LLDB_SERVER", android_lldb_server)


option(
    env="STLPORT_LIBS",
    nargs=1,
    help="Options linker should pass for standard C++ library",
)


@depends("STLPORT_LIBS", ndk)
@imports(_from="os.path", _import="isfile")
def stlport_libs(value, ndk):
    if value and len(value):
        return value.split()
    if not ndk:
        return

    return ["-static-libstdc++"]


set_config("STLPORT_LIBS", stlport_libs)


@depends(android_sysroot, android_toolchain)
def extra_toolchain_flags(android_sysroot, toolchain_dir):
    if not android_sysroot:
        return []
    flags = [
        "--sysroot={}".format(android_sysroot),
        "--gcc-toolchain={}".format(toolchain_dir),
    ]
    return flags


add_old_configure_assignment("extra_android_flags", extra_toolchain_flags)


@depends(extra_toolchain_flags)
def bindgen_cflags_android(toolchain_flags):
    return toolchain_flags


@depends("--with-android-googlevr-sdk", target)
@checking("for GoogleVR SDK", lambda x: x.result)
@imports(_from="os.path", _import="exists")
@imports(_from="os.path", _import="abspath")
def googlevr_sdk(value, target):
    if not value:
        return namespace(result="Not specified")
    path = abspath(value[0])
    if not exists(path):
        die("Could not find GoogleVR SDK %s", path)
    include = "%s/libraries/headers/" % path
    if "arm" == target.cpu:
        arch = "armeabi-v7a"
    elif "aarch64" == target.cpu:
        arch = "arm64-v8a"
    elif "x86" == target.cpu:
        arch = "x86"
    else:
        die("Unsupported GoogleVR cpu architecture %s" % target.cpu)

    libs = "{0}/libraries/jni/{1}/".format(path, arch)

    if not exists(libs):
        die(
            "Could not find GoogleVR NDK at %s. Did you try running "
            "'./gradlew :extractNdk' in %s?",
            libs,
            path,
        )

    return namespace(
        result=path,
        include=include,
        libs=libs,
        enabled=True,
    )


set_define("MOZ_ANDROID_GOOGLE_VR", googlevr_sdk.enabled)
set_config("MOZ_ANDROID_GOOGLE_VR", googlevr_sdk.enabled)
set_config("MOZ_ANDROID_GOOGLE_VR_INCLUDE", googlevr_sdk.include)
set_config("MOZ_ANDROID_GOOGLE_VR_LIBS", googlevr_sdk.libs)