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import os
import platform
import subprocess
import sys
from typing import TYPE_CHECKING
from methods import print_error, print_warning
from platform_methods import validate_arch
if TYPE_CHECKING:
from SCons.Script.SConscript import SConsEnvironment
def get_name():
return "Android"
def can_build():
return os.path.exists(get_env_android_sdk_root())
def get_opts():
from SCons.Variables import BoolVariable
return [
("ANDROID_HOME", "Path to the Android SDK", get_env_android_sdk_root()),
(
"ndk_platform",
'Target platform (android-<api>, e.g. "android-' + str(get_min_target_api()) + '")',
"android-" + str(get_min_target_api()),
),
BoolVariable("store_release", "Editor build for Google Play Store (for official builds only)", False),
BoolVariable("generate_apk", "Generate an APK/AAB after building Android library by calling Gradle", False),
BoolVariable("swappy", "Use Swappy Frame Pacing library", False),
]
def get_doc_classes():
return [
"EditorExportPlatformAndroid",
]
def get_doc_path():
return "doc_classes"
# Return the ANDROID_HOME environment variable.
def get_env_android_sdk_root():
return os.environ.get("ANDROID_HOME", os.environ.get("ANDROID_SDK_ROOT", ""))
def get_min_sdk_version(platform):
return int(platform.split("-")[1])
def get_android_ndk_root(env: "SConsEnvironment"):
return env["ANDROID_HOME"] + "/ndk/" + get_ndk_version()
# This is kept in sync with the value in 'platform/android/java/app/config.gradle'.
def get_ndk_version():
return "23.2.8568313"
# This is kept in sync with the value in 'platform/android/java/app/config.gradle'.
def get_min_target_api():
return 21
def get_flags():
return {
"arch": "arm64",
"target": "template_debug",
"supported": ["mono"],
}
# Check if Android NDK version is installed
# If not, install it.
def install_ndk_if_needed(env: "SConsEnvironment"):
sdk_root = env["ANDROID_HOME"]
if not os.path.exists(get_android_ndk_root(env)):
extension = ".bat" if os.name == "nt" else ""
sdkmanager = sdk_root + "/cmdline-tools/latest/bin/sdkmanager" + extension
if os.path.exists(sdkmanager):
# Install the Android NDK
print("Installing Android NDK...")
ndk_download_args = "ndk;" + get_ndk_version()
subprocess.check_call([sdkmanager, ndk_download_args])
else:
print_error(
f'Cannot find "{sdkmanager}". Please ensure ANDROID_HOME is correct and cmdline-tools'
f' are installed, or install NDK version "{get_ndk_version()}" manually.'
)
sys.exit(255)
env["ANDROID_NDK_ROOT"] = get_android_ndk_root(env)
def detect_swappy():
archs = ["arm64-v8a", "armeabi-v7a", "x86", "x86_64"]
has_swappy = True
for arch in archs:
if not os.path.isfile(f"thirdparty/swappy-frame-pacing/{arch}/libswappy_static.a"):
has_swappy = False
return has_swappy
def configure(env: "SConsEnvironment"):
# Validate arch.
supported_arches = ["x86_32", "x86_64", "arm32", "arm64"]
validate_arch(env["arch"], get_name(), supported_arches)
if get_min_sdk_version(env["ndk_platform"]) < get_min_target_api():
print_warning(
"Minimum supported Android target api is %d. Forcing target api %d."
% (get_min_target_api(), get_min_target_api())
)
env["ndk_platform"] = "android-" + str(get_min_target_api())
install_ndk_if_needed(env)
ndk_root = env["ANDROID_NDK_ROOT"]
# Architecture
if env["arch"] == "arm32":
target_triple = "armv7a-linux-androideabi"
elif env["arch"] == "arm64":
target_triple = "aarch64-linux-android"
elif env["arch"] == "x86_32":
target_triple = "i686-linux-android"
elif env["arch"] == "x86_64":
target_triple = "x86_64-linux-android"
target_option = ["-target", target_triple + str(get_min_sdk_version(env["ndk_platform"]))]
env.Append(ASFLAGS=[target_option, "-c"])
env.Append(CCFLAGS=target_option)
env.Append(LINKFLAGS=target_option)
# LTO
if env["lto"] == "auto": # LTO benefits for Android (size, performance) haven't been clearly established yet.
env["lto"] = "none"
if env["lto"] != "none":
if env["lto"] == "thin":
env.Append(CCFLAGS=["-flto=thin"])
env.Append(LINKFLAGS=["-flto=thin"])
else:
env.Append(CCFLAGS=["-flto"])
env.Append(LINKFLAGS=["-flto"])
# Compiler configuration
env["SHLIBSUFFIX"] = ".so"
if env["PLATFORM"] == "win32":
env.use_windows_spawn_fix()
if sys.platform.startswith("linux"):
host_subpath = "linux-x86_64"
elif sys.platform.startswith("darwin"):
host_subpath = "darwin-x86_64"
elif sys.platform.startswith("win"):
if platform.machine().endswith("64"):
host_subpath = "windows-x86_64"
else:
host_subpath = "windows"
toolchain_path = ndk_root + "/toolchains/llvm/prebuilt/" + host_subpath
compiler_path = toolchain_path + "/bin"
env["CC"] = compiler_path + "/clang"
env["CXX"] = compiler_path + "/clang++"
env["AR"] = compiler_path + "/llvm-ar"
env["RANLIB"] = compiler_path + "/llvm-ranlib"
env["AS"] = compiler_path + "/clang"
env.Append(
CCFLAGS=(["-fpic", "-ffunction-sections", "-funwind-tables", "-fstack-protector-strong", "-fvisibility=hidden"])
)
has_swappy = detect_swappy()
if not has_swappy:
print_warning(
"Swappy Frame Pacing not detected! It is strongly recommended you download it from https://github.com/darksylinc/godot-swappy/releases and extract it so that the following files can be found:\n"
+ " thirdparty/swappy-frame-pacing/arm64-v8a/libswappy_static.a\n"
+ " thirdparty/swappy-frame-pacing/armeabi-v7a/libswappy_static.a\n"
+ " thirdparty/swappy-frame-pacing/x86/libswappy_static.a\n"
+ " thirdparty/swappy-frame-pacing/x86_64/libswappy_static.a\n"
+ "Without Swappy, Godot apps on Android will inevitable suffer stutter and struggle to keep consistent 30/60/90/120 fps. Though Swappy cannot guarantee your app will be stutter-free, not having Swappy will guarantee there will be stutter even on the best phones and the most simple of scenes."
)
if env["swappy"]:
print_error("Use build option `swappy=no` to ignore missing Swappy dependency and build without it.")
sys.exit(255)
if get_min_sdk_version(env["ndk_platform"]) >= 24:
env.Append(CPPDEFINES=[("_FILE_OFFSET_BITS", 64)])
if env["arch"] == "x86_32":
# The NDK adds this if targeting API < 24, so we can drop it when Godot targets it at least
env.Append(CCFLAGS=["-mstackrealign"])
if has_swappy:
env.Append(LIBPATH=["#thirdparty/swappy-frame-pacing/x86"])
elif env["arch"] == "x86_64":
if has_swappy:
env.Append(LIBPATH=["#thirdparty/swappy-frame-pacing/x86_64"])
elif env["arch"] == "arm32":
env.Append(CCFLAGS=["-march=armv7-a", "-mfloat-abi=softfp"])
env.Append(CPPDEFINES=["__ARM_ARCH_7__", "__ARM_ARCH_7A__"])
env.Append(CPPDEFINES=["__ARM_NEON__"])
if has_swappy:
env.Append(LIBPATH=["#thirdparty/swappy-frame-pacing/armeabi-v7a"])
elif env["arch"] == "arm64":
env.Append(CCFLAGS=["-mfix-cortex-a53-835769"])
env.Append(CPPDEFINES=["__ARM_ARCH_8A__"])
if has_swappy:
env.Append(LIBPATH=["#thirdparty/swappy-frame-pacing/arm64-v8a"])
env.Append(CCFLAGS=["-ffp-contract=off"])
# Link flags
env.Append(LINKFLAGS=["-Wl,--gc-sections", "-Wl,--no-undefined", "-Wl,-z,now"])
env.Append(LINKFLAGS=["-Wl,-soname,libgodot_android.so"])
env.Prepend(CPPPATH=["#platform/android"])
env.Append(CPPDEFINES=["ANDROID_ENABLED", "UNIX_ENABLED"])
env.Append(LIBS=["OpenSLES", "EGL", "android", "log", "z", "dl"])
if env["vulkan"]:
env.Append(CPPDEFINES=["VULKAN_ENABLED", "RD_ENABLED"])
if has_swappy:
env.Append(CPPDEFINES=["SWAPPY_FRAME_PACING_ENABLED"])
env.Append(LIBS=["swappy_static"])
if not env["use_volk"]:
env.Append(LIBS=["vulkan"])
if env["opengl3"]:
env.Append(CPPDEFINES=["GLES3_ENABLED"])
env.Append(LIBS=["GLESv3"])
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