554312a3b2
We no longer build the Vulkan loader, and volk lets us load it dynamically. Roblox uses volk on Android so it should work well for us too.
399 lines
14 KiB
Python
399 lines
14 KiB
Python
import os
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import sys
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import platform
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from distutils.version import LooseVersion
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def is_active():
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return True
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def get_name():
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return "Android"
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def can_build():
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return ("ANDROID_SDK_ROOT" in os.environ) or ("ANDROID_HOME" in os.environ)
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def get_platform(platform):
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return int(platform.split("-")[1])
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def get_opts():
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from SCons.Variables import BoolVariable, EnumVariable
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return [
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("ANDROID_NDK_ROOT", "Path to the Android NDK", get_android_ndk_root()),
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("ANDROID_SDK_ROOT", "Path to the Android SDK", get_android_sdk_root()),
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("ndk_platform", 'Target platform (android-<api>, e.g. "android-24")', "android-24"),
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EnumVariable("android_arch", "Target architecture", "armv7", ("armv7", "arm64v8", "x86", "x86_64")),
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BoolVariable("android_neon", "Enable NEON support (armv7 only)", True),
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]
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# Return the ANDROID_SDK_ROOT environment variable.
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# While ANDROID_HOME has been deprecated, it's used as a fallback for backward
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# compatibility purposes.
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def get_android_sdk_root():
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if "ANDROID_SDK_ROOT" in os.environ:
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return os.environ.get("ANDROID_SDK_ROOT", 0)
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else:
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return os.environ.get("ANDROID_HOME", 0)
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# Return the ANDROID_NDK_ROOT environment variable.
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# We generate one for this build using the ANDROID_SDK_ROOT env
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# variable and the project ndk version.
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# If the env variable is already defined, we override it with
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# our own to match what the project expects.
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def get_android_ndk_root():
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return get_android_sdk_root() + "/ndk/" + get_project_ndk_version()
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def get_flags():
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return [
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("tools", False),
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]
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def create(env):
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tools = env["TOOLS"]
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if "mingw" in tools:
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tools.remove("mingw")
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if "applelink" in tools:
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tools.remove("applelink")
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env.Tool("gcc")
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return env.Clone(tools=tools)
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# Check if ANDROID_NDK_ROOT is valid.
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# If not, install the ndk using ANDROID_SDK_ROOT and sdkmanager.
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def install_ndk_if_needed(env):
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print("Checking for Android NDK...")
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env_ndk_version = get_env_ndk_version(env["ANDROID_NDK_ROOT"])
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if env_ndk_version is None:
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# Reinstall the ndk and update ANDROID_NDK_ROOT.
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print("Installing Android NDK...")
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if env["ANDROID_SDK_ROOT"] is None:
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raise Exception("Invalid ANDROID_SDK_ROOT environment variable.")
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import subprocess
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extension = ".bat" if os.name == "nt" else ""
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sdkmanager_path = env["ANDROID_SDK_ROOT"] + "/cmdline-tools/latest/bin/sdkmanager" + extension
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ndk_download_args = "ndk;" + get_project_ndk_version()
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subprocess.check_call([sdkmanager_path, ndk_download_args])
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env["ANDROID_NDK_ROOT"] = env["ANDROID_SDK_ROOT"] + "/ndk/" + get_project_ndk_version()
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print("ANDROID_NDK_ROOT: " + env["ANDROID_NDK_ROOT"])
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def configure(env):
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install_ndk_if_needed(env)
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# Workaround for MinGW. See:
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# http://www.scons.org/wiki/LongCmdLinesOnWin32
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if os.name == "nt":
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import subprocess
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def mySubProcess(cmdline, env):
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# print("SPAWNED : " + cmdline)
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startupinfo = subprocess.STARTUPINFO()
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startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
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proc = subprocess.Popen(
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cmdline,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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startupinfo=startupinfo,
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shell=False,
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env=env,
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)
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data, err = proc.communicate()
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rv = proc.wait()
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if rv:
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print("=====")
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print(err)
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print("=====")
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return rv
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def mySpawn(sh, escape, cmd, args, env):
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newargs = " ".join(args[1:])
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cmdline = cmd + " " + newargs
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rv = 0
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if len(cmdline) > 32000 and cmd.endswith("ar"):
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cmdline = cmd + " " + args[1] + " " + args[2] + " "
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for i in range(3, len(args)):
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rv = mySubProcess(cmdline + args[i], env)
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if rv:
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break
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else:
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rv = mySubProcess(cmdline, env)
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return rv
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env["SPAWN"] = mySpawn
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# Architecture
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if env["android_arch"] not in ["armv7", "arm64v8", "x86", "x86_64"]:
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env["android_arch"] = "armv7"
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neon_text = ""
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if env["android_arch"] == "armv7" and env["android_neon"]:
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neon_text = " (with NEON)"
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print("Building for Android, platform " + env["ndk_platform"] + " (" + env["android_arch"] + ")" + neon_text)
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can_vectorize = True
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if env["android_arch"] == "x86":
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env["ARCH"] = "arch-x86"
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env.extra_suffix = ".x86" + env.extra_suffix
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target_subpath = "x86-4.9"
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abi_subpath = "i686-linux-android"
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arch_subpath = "x86"
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env["x86_libtheora_opt_gcc"] = True
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if env["android_arch"] == "x86_64":
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if get_platform(env["ndk_platform"]) < 21:
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print(
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"WARNING: android_arch=x86_64 is not supported by ndk_platform lower than android-21; setting"
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" ndk_platform=android-21"
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)
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env["ndk_platform"] = "android-21"
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env["ARCH"] = "arch-x86_64"
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env.extra_suffix = ".x86_64" + env.extra_suffix
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target_subpath = "x86_64-4.9"
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abi_subpath = "x86_64-linux-android"
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arch_subpath = "x86_64"
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env["x86_libtheora_opt_gcc"] = True
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elif env["android_arch"] == "armv7":
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env["ARCH"] = "arch-arm"
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target_subpath = "arm-linux-androideabi-4.9"
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abi_subpath = "arm-linux-androideabi"
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arch_subpath = "armeabi-v7a"
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if env["android_neon"]:
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env.extra_suffix = ".armv7.neon" + env.extra_suffix
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else:
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env.extra_suffix = ".armv7" + env.extra_suffix
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elif env["android_arch"] == "arm64v8":
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if get_platform(env["ndk_platform"]) < 21:
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print(
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"WARNING: android_arch=arm64v8 is not supported by ndk_platform lower than android-21; setting"
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" ndk_platform=android-21"
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)
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env["ndk_platform"] = "android-21"
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env["ARCH"] = "arch-arm64"
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target_subpath = "aarch64-linux-android-4.9"
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abi_subpath = "aarch64-linux-android"
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arch_subpath = "arm64-v8a"
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env.extra_suffix = ".armv8" + env.extra_suffix
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# Build type
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if env["target"].startswith("release"):
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if env["optimize"] == "speed": # optimize for speed (default)
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env.Append(LINKFLAGS=["-O2"])
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env.Append(CCFLAGS=["-O2", "-fomit-frame-pointer"])
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elif env["optimize"] == "size": # optimize for size
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env.Append(CCFLAGS=["-Os"])
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env.Append(LINKFLAGS=["-Os"])
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env.Append(CPPDEFINES=["NDEBUG"])
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if can_vectorize:
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env.Append(CCFLAGS=["-ftree-vectorize"])
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if env["target"] == "release_debug":
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env.Append(CPPDEFINES=["DEBUG_ENABLED"])
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elif env["target"] == "debug":
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env.Append(LINKFLAGS=["-O0"])
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env.Append(CCFLAGS=["-O0", "-g", "-fno-limit-debug-info"])
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env.Append(CPPDEFINES=["_DEBUG", "DEBUG_ENABLED"])
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env.Append(CPPFLAGS=["-UNDEBUG"])
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# Compiler configuration
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env["SHLIBSUFFIX"] = ".so"
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if env["PLATFORM"] == "win32":
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env.Tool("gcc")
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env.use_windows_spawn_fix()
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if sys.platform.startswith("linux"):
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host_subpath = "linux-x86_64"
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elif sys.platform.startswith("darwin"):
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host_subpath = "darwin-x86_64"
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elif sys.platform.startswith("win"):
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if platform.machine().endswith("64"):
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host_subpath = "windows-x86_64"
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else:
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host_subpath = "windows"
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compiler_path = env["ANDROID_NDK_ROOT"] + "/toolchains/llvm/prebuilt/" + host_subpath + "/bin"
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gcc_toolchain_path = env["ANDROID_NDK_ROOT"] + "/toolchains/" + target_subpath + "/prebuilt/" + host_subpath
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tools_path = gcc_toolchain_path + "/" + abi_subpath + "/bin"
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# For Clang to find NDK tools in preference of those system-wide
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env.PrependENVPath("PATH", tools_path)
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ccache_path = os.environ.get("CCACHE")
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if ccache_path is None:
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env["CC"] = compiler_path + "/clang"
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env["CXX"] = compiler_path + "/clang++"
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else:
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# there aren't any ccache wrappers available for Android,
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# to enable caching we need to prepend the path to the ccache binary
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env["CC"] = ccache_path + " " + compiler_path + "/clang"
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env["CXX"] = ccache_path + " " + compiler_path + "/clang++"
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env["AR"] = tools_path + "/ar"
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env["RANLIB"] = tools_path + "/ranlib"
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env["AS"] = tools_path + "/as"
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common_opts = ["-gcc-toolchain", gcc_toolchain_path]
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# Compile flags
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env.Append(CPPFLAGS=["-isystem", env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/include"])
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env.Append(CPPFLAGS=["-isystem", env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++abi/include"])
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# Disable exceptions and rtti on non-tools (template) builds
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if env["tools"]:
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env.Append(CXXFLAGS=["-frtti"])
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elif env["builtin_icu"]:
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env.Append(CXXFLAGS=["-frtti", "-fno-exceptions"])
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else:
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env.Append(CXXFLAGS=["-fno-rtti", "-fno-exceptions"])
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# Don't use dynamic_cast, necessary with no-rtti.
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env.Append(CPPDEFINES=["NO_SAFE_CAST"])
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lib_sysroot = env["ANDROID_NDK_ROOT"] + "/platforms/" + env["ndk_platform"] + "/" + env["ARCH"]
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# Using NDK unified headers (NDK r15+)
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sysroot = env["ANDROID_NDK_ROOT"] + "/sysroot"
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env.Append(CPPFLAGS=["--sysroot=" + sysroot])
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env.Append(CPPFLAGS=["-isystem", sysroot + "/usr/include/" + abi_subpath])
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env.Append(CPPFLAGS=["-isystem", env["ANDROID_NDK_ROOT"] + "/sources/android/support/include"])
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# For unified headers this define has to be set manually
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env.Append(CPPDEFINES=[("__ANDROID_API__", str(get_platform(env["ndk_platform"])))])
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env.Append(
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CCFLAGS=(
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"-fpic -ffunction-sections -funwind-tables -fstack-protector-strong -fvisibility=hidden"
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" -fno-strict-aliasing".split()
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)
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)
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env.Append(CPPDEFINES=["NO_STATVFS", "GLES_ENABLED"])
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if get_platform(env["ndk_platform"]) >= 24:
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env.Append(CPPDEFINES=[("_FILE_OFFSET_BITS", 64)])
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env["neon_enabled"] = False
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if env["android_arch"] == "x86":
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target_opts = ["-target", "i686-none-linux-android"]
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# The NDK adds this if targeting API < 21, so we can drop it when Godot targets it at least
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env.Append(CCFLAGS=["-mstackrealign"])
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elif env["android_arch"] == "x86_64":
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target_opts = ["-target", "x86_64-none-linux-android"]
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elif env["android_arch"] == "armv7":
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target_opts = ["-target", "armv7-none-linux-androideabi"]
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env.Append(CCFLAGS="-march=armv7-a -mfloat-abi=softfp".split())
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env.Append(CPPDEFINES=["__ARM_ARCH_7__", "__ARM_ARCH_7A__"])
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if env["android_neon"]:
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env["neon_enabled"] = True
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env.Append(CCFLAGS=["-mfpu=neon"])
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env.Append(CPPDEFINES=["__ARM_NEON__"])
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else:
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env.Append(CCFLAGS=["-mfpu=vfpv3-d16"])
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elif env["android_arch"] == "arm64v8":
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target_opts = ["-target", "aarch64-none-linux-android"]
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env.Append(CCFLAGS=["-mfix-cortex-a53-835769"])
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env.Append(CPPDEFINES=["__ARM_ARCH_8A__"])
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env.Append(CCFLAGS=target_opts)
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env.Append(CCFLAGS=common_opts)
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# Link flags
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ndk_version = get_env_ndk_version(env["ANDROID_NDK_ROOT"])
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if ndk_version != None and LooseVersion(ndk_version) >= LooseVersion("17.1.4828580"):
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env.Append(LINKFLAGS=["-Wl,--exclude-libs,libgcc.a", "-Wl,--exclude-libs,libatomic.a", "-nostdlib++"])
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else:
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env.Append(
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LINKFLAGS=[
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env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/libs/" + arch_subpath + "/libandroid_support.a"
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]
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)
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env.Append(LINKFLAGS=["-shared", "--sysroot=" + lib_sysroot, "-Wl,--warn-shared-textrel"])
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env.Append(LIBPATH=[env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/libs/" + arch_subpath + "/"])
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env.Append(
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LINKFLAGS=[env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/libs/" + arch_subpath + "/libc++_shared.so"]
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)
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if env["android_arch"] == "armv7":
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env.Append(LINKFLAGS="-Wl,--fix-cortex-a8".split())
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env.Append(LINKFLAGS="-Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now".split())
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env.Append(LINKFLAGS="-Wl,-soname,libgodot_android.so -Wl,--gc-sections".split())
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env.Append(LINKFLAGS=target_opts)
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env.Append(LINKFLAGS=common_opts)
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env.Append(
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LIBPATH=[
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env["ANDROID_NDK_ROOT"]
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+ "/toolchains/"
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+ target_subpath
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+ "/prebuilt/"
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+ host_subpath
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+ "/lib/gcc/"
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+ abi_subpath
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+ "/4.9.x"
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]
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)
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env.Append(
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LIBPATH=[
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env["ANDROID_NDK_ROOT"]
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+ "/toolchains/"
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+ target_subpath
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+ "/prebuilt/"
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+ host_subpath
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+ "/"
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+ abi_subpath
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+ "/lib"
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]
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)
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env.Prepend(CPPPATH=["#platform/android"])
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env.Append(CPPDEFINES=["ANDROID_ENABLED", "UNIX_ENABLED", "NO_FCNTL"])
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env.Append(LIBS=["OpenSLES", "EGL", "GLESv2", "android", "log", "z", "dl"])
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if env["vulkan"]:
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env.Append(CPPDEFINES=["VULKAN_ENABLED"])
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if not env["use_volk"]:
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env.Append(LIBS=["vulkan"])
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# Return the project NDK version.
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# This is kept in sync with the value in 'platform/android/java/app/config.gradle'.
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def get_project_ndk_version():
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return "21.4.7075529"
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# Return NDK version string in source.properties (adapted from the Chromium project).
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def get_env_ndk_version(path):
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if path is None:
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return None
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prop_file_path = os.path.join(path, "source.properties")
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try:
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with open(prop_file_path) as prop_file:
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for line in prop_file:
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key_value = list(map(lambda x: x.strip(), line.split("=")))
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if key_value[0] == "Pkg.Revision":
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return key_value[1]
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except Exception:
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print("Could not read source prop file '%s'" % prop_file_path)
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return None
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