570e6c1730
Adds support for LTO on macOS and Android. Disable LTO by default on iOS even if `production=yes` is set. Also add `linker` option to `server` platform missed in #63283. Refactor code handling old arguments to make it simpler (breaks compat, but is explicit enough about it and scripts are easy to fix).
217 lines
7.6 KiB
Python
217 lines
7.6 KiB
Python
import os
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import sys
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import platform
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import subprocess
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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 os.path.exists(get_env_android_sdk_root())
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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_SDK_ROOT", "Path to the Android SDK", get_env_android_sdk_root()),
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("ndk_platform", 'Target platform (android-<api>, e.g. "android-19")', "android-19"),
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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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def get_env_android_sdk_root():
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return os.environ.get("ANDROID_SDK_ROOT", -1)
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def get_min_sdk_version(platform):
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return int(platform.split("-")[1])
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def get_android_ndk_root(env):
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return env["ANDROID_SDK_ROOT"] + "/ndk/" + get_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_ndk_version():
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return "23.2.8568313"
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def get_flags():
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return [
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("tools", False),
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# Benefits of LTO for Android (size, performance) haven't been clearly established yet.
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# So for now we override the default value which may be set when using `production=yes`.
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("lto", "none"),
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]
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# Check if Android NDK version is installed
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# If not, install it.
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def install_ndk_if_needed(env):
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print("Checking for Android NDK...")
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sdk_root = env["ANDROID_SDK_ROOT"]
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if not os.path.exists(get_android_ndk_root(env)):
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extension = ".bat" if os.name == "nt" else ""
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sdkmanager = sdk_root + "/cmdline-tools/latest/bin/sdkmanager" + extension
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if os.path.exists(sdkmanager):
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# Install the Android NDK
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print("Installing Android NDK...")
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ndk_download_args = "ndk;" + get_ndk_version()
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subprocess.check_call([sdkmanager, ndk_download_args])
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else:
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print("Cannot find " + sdkmanager)
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print(
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"Please ensure ANDROID_SDK_ROOT is correct and cmdline-tools are installed, or install NDK version "
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+ get_ndk_version()
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+ " manually."
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)
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sys.exit()
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env["ANDROID_NDK_ROOT"] = get_android_ndk_root(env)
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def configure(env):
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install_ndk_if_needed(env)
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ndk_root = env["ANDROID_NDK_ROOT"]
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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"] = "arm64v8"
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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 (" + env["android_arch"] + ")" + neon_text)
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if get_min_sdk_version(env["ndk_platform"]) < 21:
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if env["android_arch"] == "x86_64" or env["android_arch"] == "arm64v8":
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print(
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"WARNING: android_arch="
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+ env["android_arch"]
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+ " is not supported by ndk_platform lower than android-21; setting ndk_platform=android-21"
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)
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env["ndk_platform"] = "android-21"
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if env["android_arch"] == "armv7":
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target_triple = "armv7a-linux-androideabi"
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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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target_triple = "aarch64-linux-android"
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env.extra_suffix = ".armv8" + env.extra_suffix
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elif env["android_arch"] == "x86":
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target_triple = "i686-linux-android"
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env.extra_suffix = ".x86" + env.extra_suffix
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elif env["android_arch"] == "x86_64":
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target_triple = "x86_64-linux-android"
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env.extra_suffix = ".x86_64" + env.extra_suffix
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target_option = ["-target", target_triple + str(get_min_sdk_version(env["ndk_platform"]))]
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env.Append(ASFLAGS=[target_option, "-c"])
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env.Append(CCFLAGS=target_option)
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env.Append(LINKFLAGS=target_option)
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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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# `-O2` is more friendly to debuggers than `-O3`, leading to better crash backtraces
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# when using `target=release_debug`.
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opt = "-O3" if env["target"] == "release" else "-O2"
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env.Append(CCFLAGS=[opt, "-fomit-frame-pointer"])
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elif env["optimize"] == "size": # optimize for size
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env.Append(CCFLAGS=["-Oz"])
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env.Append(CPPDEFINES=["NDEBUG"])
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env.Append(CCFLAGS=["-ftree-vectorize"])
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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"])
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env.Append(CPPFLAGS=["-UNDEBUG"])
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# LTO
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if env["lto"] != "none":
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if env["lto"] == "thin":
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env.Append(CCFLAGS=["-flto=thin"])
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env.Append(LINKFLAGS=["-flto=thin"])
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else:
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env.Append(CCFLAGS=["-flto"])
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env.Append(LINKFLAGS=["-flto"])
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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.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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toolchain_path = ndk_root + "/toolchains/llvm/prebuilt/" + host_subpath
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compiler_path = toolchain_path + "/bin"
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env["CC"] = compiler_path + "/clang"
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env["CXX"] = compiler_path + "/clang++"
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env["AR"] = compiler_path + "/llvm-ar"
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env["RANLIB"] = compiler_path + "/llvm-ranlib"
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env["AS"] = compiler_path + "/clang"
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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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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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env.Append(
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CCFLAGS="-fpic -ffunction-sections -funwind-tables -fstack-protector-strong -fvisibility=hidden -fno-strict-aliasing".split()
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)
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env.Append(CPPDEFINES=["NO_STATVFS", "GLES_ENABLED"])
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if get_min_sdk_version(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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# The NDK adds this if targeting API < 24, 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"] == "armv7":
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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(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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env.Append(CCFLAGS=["-mfix-cortex-a53-835769"])
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env.Append(CPPDEFINES=["__ARM_ARCH_8A__"])
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# Link flags
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env.Append(LINKFLAGS="-Wl,--gc-sections -Wl,--no-undefined -Wl,-z,now".split())
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env.Append(LINKFLAGS="-Wl,-soname,libgodot_android.so")
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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", "GLESv3", "GLESv2", "android", "log", "z", "dl"])
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