import os import sys import platform from distutils.version import LooseVersion def is_active(): return True def get_name(): return "Android" def can_build(): return ("ANDROID_SDK_ROOT" in os.environ) or ("ANDROID_HOME" in os.environ) def get_platform(platform): return int(platform.split("-")[1]) def get_opts(): from SCons.Variables import BoolVariable, EnumVariable return [ ("ANDROID_NDK_ROOT", "Path to the Android NDK", get_android_ndk_root()), ("ANDROID_SDK_ROOT", "Path to the Android SDK", get_android_sdk_root()), ("ndk_platform", 'Target platform (android-<api>, e.g. "android-18")', "android-18"), EnumVariable("android_arch", "Target architecture", "armv7", ("armv7", "arm64v8", "x86", "x86_64")), BoolVariable("android_neon", "Enable NEON support (armv7 only)", True), ] # Return the ANDROID_SDK_ROOT environment variable. # While ANDROID_HOME has been deprecated, it's used as a fallback for backward # compatibility purposes. def get_android_sdk_root(): if "ANDROID_SDK_ROOT" in os.environ: return os.environ.get("ANDROID_SDK_ROOT", 0) else: return os.environ.get("ANDROID_HOME", 0) # Return the ANDROID_NDK_ROOT environment variable. # We generate one for this build using the ANDROID_SDK_ROOT env # variable and the project ndk version. # If the env variable is already defined, we override it with # our own to match what the project expects. def get_android_ndk_root(): return get_android_sdk_root() + "/ndk/" + get_project_ndk_version() def get_flags(): return [ ("tools", False), ] def create(env): tools = env["TOOLS"] if "mingw" in tools: tools.remove("mingw") if "applelink" in tools: tools.remove("applelink") env.Tool("gcc") return env.Clone(tools=tools) # Check if ANDROID_NDK_ROOT is valid. # If not, install the ndk using ANDROID_SDK_ROOT and sdkmanager. def install_ndk_if_needed(env): print("Checking for Android NDK...") env_ndk_version = get_env_ndk_version(env["ANDROID_NDK_ROOT"]) if env_ndk_version is None: # Reinstall the ndk and update ANDROID_NDK_ROOT. print("Installing Android NDK...") if env["ANDROID_SDK_ROOT"] is None: raise Exception("Invalid ANDROID_SDK_ROOT environment variable.") import subprocess extension = ".bat" if os.name == "nt" else "" sdkmanager_path = env["ANDROID_SDK_ROOT"] + "/cmdline-tools/latest/bin/sdkmanager" + extension ndk_download_args = "ndk;" + get_project_ndk_version() subprocess.check_call([sdkmanager_path, ndk_download_args]) env["ANDROID_NDK_ROOT"] = env["ANDROID_SDK_ROOT"] + "/ndk/" + get_project_ndk_version() print("ANDROID_NDK_ROOT: " + env["ANDROID_NDK_ROOT"]) def configure(env): install_ndk_if_needed(env) # Workaround for MinGW. See: # http://www.scons.org/wiki/LongCmdLinesOnWin32 if os.name == "nt": import subprocess def mySubProcess(cmdline, env): # print("SPAWNED : " + cmdline) startupinfo = subprocess.STARTUPINFO() startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW proc = subprocess.Popen( cmdline, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, startupinfo=startupinfo, shell=False, env=env, ) data, err = proc.communicate() rv = proc.wait() if rv: print("=====") print(err) print("=====") return rv def mySpawn(sh, escape, cmd, args, env): newargs = " ".join(args[1:]) cmdline = cmd + " " + newargs rv = 0 if len(cmdline) > 32000 and cmd.endswith("ar"): cmdline = cmd + " " + args[1] + " " + args[2] + " " for i in range(3, len(args)): rv = mySubProcess(cmdline + args[i], env) if rv: break else: rv = mySubProcess(cmdline, env) return rv env["SPAWN"] = mySpawn # Architecture if env["android_arch"] not in ["armv7", "arm64v8", "x86", "x86_64"]: env["android_arch"] = "armv7" neon_text = "" if env["android_arch"] == "armv7" and env["android_neon"]: neon_text = " (with NEON)" print("Building for Android (" + env["android_arch"] + ")" + neon_text) can_vectorize = True if env["android_arch"] == "x86": env["ARCH"] = "arch-x86" env.extra_suffix = ".x86" + env.extra_suffix target_subpath = "x86-4.9" abi_subpath = "i686-linux-android" arch_subpath = "x86" env["x86_libtheora_opt_gcc"] = True if env["android_arch"] == "x86_64": if get_platform(env["ndk_platform"]) < 21: print( "WARNING: android_arch=x86_64 is not supported by ndk_platform lower than android-21; setting ndk_platform=android-21" ) env["ndk_platform"] = "android-21" env["ARCH"] = "arch-x86_64" env.extra_suffix = ".x86_64" + env.extra_suffix target_subpath = "x86_64-4.9" abi_subpath = "x86_64-linux-android" arch_subpath = "x86_64" env["x86_libtheora_opt_gcc"] = True elif env["android_arch"] == "armv7": env["ARCH"] = "arch-arm" target_subpath = "arm-linux-androideabi-4.9" abi_subpath = "arm-linux-androideabi" arch_subpath = "armeabi-v7a" if env["android_neon"]: env.extra_suffix = ".armv7.neon" + env.extra_suffix else: env.extra_suffix = ".armv7" + env.extra_suffix elif env["android_arch"] == "arm64v8": if get_platform(env["ndk_platform"]) < 21: print( "WARNING: android_arch=arm64v8 is not supported by ndk_platform lower than android-21; setting ndk_platform=android-21" ) env["ndk_platform"] = "android-21" env["ARCH"] = "arch-arm64" target_subpath = "aarch64-linux-android-4.9" abi_subpath = "aarch64-linux-android" arch_subpath = "arm64-v8a" env.extra_suffix = ".armv8" + env.extra_suffix # Build type if env["target"].startswith("release"): if env["optimize"] == "speed": # optimize for speed (default) env.Append(LINKFLAGS=["-O2"]) env.Append(CCFLAGS=["-O2", "-fomit-frame-pointer"]) elif env["optimize"] == "size": # optimize for size env.Append(CCFLAGS=["-Os"]) env.Append(LINKFLAGS=["-Os"]) env.Append(CPPDEFINES=["NDEBUG"]) if can_vectorize: env.Append(CCFLAGS=["-ftree-vectorize"]) if env["target"] == "release_debug": env.Append(CPPDEFINES=["DEBUG_ENABLED"]) elif env["target"] == "debug": env.Append(LINKFLAGS=["-O0"]) env.Append(CCFLAGS=["-O0", "-g", "-fno-limit-debug-info"]) env.Append(CPPDEFINES=["_DEBUG", "DEBUG_ENABLED"]) env.Append(CPPFLAGS=["-UNDEBUG"]) # Compiler configuration env["SHLIBSUFFIX"] = ".so" if env["PLATFORM"] == "win32": env.Tool("gcc") 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" compiler_path = env["ANDROID_NDK_ROOT"] + "/toolchains/llvm/prebuilt/" + host_subpath + "/bin" gcc_toolchain_path = env["ANDROID_NDK_ROOT"] + "/toolchains/" + target_subpath + "/prebuilt/" + host_subpath tools_path = gcc_toolchain_path + "/" + abi_subpath + "/bin" # For Clang to find NDK tools in preference of those system-wide env.PrependENVPath("PATH", tools_path) ccache_path = os.environ.get("CCACHE") if ccache_path is None: env["CC"] = compiler_path + "/clang" env["CXX"] = compiler_path + "/clang++" else: # there aren't any ccache wrappers available for Android, # to enable caching we need to prepend the path to the ccache binary env["CC"] = ccache_path + " " + compiler_path + "/clang" env["CXX"] = ccache_path + " " + compiler_path + "/clang++" env["AR"] = tools_path + "/ar" env["RANLIB"] = tools_path + "/ranlib" env["AS"] = tools_path + "/as" common_opts = ["-gcc-toolchain", gcc_toolchain_path] # Compile flags env.Append(CPPFLAGS=["-isystem", env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/include"]) env.Append(CPPFLAGS=["-isystem", env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++abi/include"]) # Disable exceptions and rtti on non-tools (template) builds if env["tools"]: env.Append(CXXFLAGS=["-frtti"]) else: env.Append(CXXFLAGS=["-fno-rtti", "-fno-exceptions"]) # Don't use dynamic_cast, necessary with no-rtti. env.Append(CPPDEFINES=["NO_SAFE_CAST"]) lib_sysroot = env["ANDROID_NDK_ROOT"] + "/platforms/" + env["ndk_platform"] + "/" + env["ARCH"] # Using NDK unified headers (NDK r15+) sysroot = env["ANDROID_NDK_ROOT"] + "/sysroot" env.Append(CPPFLAGS=["--sysroot=" + sysroot]) env.Append(CPPFLAGS=["-isystem", sysroot + "/usr/include/" + abi_subpath]) env.Append(CPPFLAGS=["-isystem", env["ANDROID_NDK_ROOT"] + "/sources/android/support/include"]) # For unified headers this define has to be set manually env.Append(CPPDEFINES=[("__ANDROID_API__", str(get_platform(env["ndk_platform"])))]) env.Append( CCFLAGS="-fpic -ffunction-sections -funwind-tables -fstack-protector-strong -fvisibility=hidden -fno-strict-aliasing".split() ) env.Append(CPPDEFINES=["NO_STATVFS", "GLES_ENABLED"]) if get_platform(env["ndk_platform"]) >= 24: env.Append(CPPDEFINES=[("_FILE_OFFSET_BITS", 64)]) env["neon_enabled"] = False if env["android_arch"] == "x86": target_opts = ["-target", "i686-none-linux-android"] # The NDK adds this if targeting API < 21, so we can drop it when Godot targets it at least env.Append(CCFLAGS=["-mstackrealign"]) elif env["android_arch"] == "x86_64": target_opts = ["-target", "x86_64-none-linux-android"] elif env["android_arch"] == "armv7": target_opts = ["-target", "armv7-none-linux-androideabi"] env.Append(CCFLAGS="-march=armv7-a -mfloat-abi=softfp".split()) env.Append(CPPDEFINES=["__ARM_ARCH_7__", "__ARM_ARCH_7A__"]) if env["android_neon"]: env["neon_enabled"] = True env.Append(CCFLAGS=["-mfpu=neon"]) env.Append(CPPDEFINES=["__ARM_NEON__"]) else: env.Append(CCFLAGS=["-mfpu=vfpv3-d16"]) elif env["android_arch"] == "arm64v8": target_opts = ["-target", "aarch64-none-linux-android"] env.Append(CCFLAGS=["-mfix-cortex-a53-835769"]) env.Append(CPPDEFINES=["__ARM_ARCH_8A__"]) env.Append(CCFLAGS=target_opts) env.Append(CCFLAGS=common_opts) # Link flags ndk_version = get_env_ndk_version(env["ANDROID_NDK_ROOT"]) if ndk_version != None and LooseVersion(ndk_version) >= LooseVersion("17.1.4828580"): env.Append(LINKFLAGS=["-Wl,--exclude-libs,libgcc.a", "-Wl,--exclude-libs,libatomic.a", "-nostdlib++"]) else: env.Append( LINKFLAGS=[ env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/libs/" + arch_subpath + "/libandroid_support.a" ] ) env.Append(LINKFLAGS=["-shared", "--sysroot=" + lib_sysroot, "-Wl,--warn-shared-textrel"]) env.Append(LIBPATH=[env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/libs/" + arch_subpath + "/"]) env.Append( LINKFLAGS=[env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/libs/" + arch_subpath + "/libc++_shared.so"] ) if env["android_arch"] == "armv7": env.Append(LINKFLAGS="-Wl,--fix-cortex-a8".split()) env.Append(LINKFLAGS="-Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now".split()) env.Append(LINKFLAGS="-Wl,-soname,libgodot_android.so -Wl,--gc-sections".split()) env.Append(LINKFLAGS=target_opts) env.Append(LINKFLAGS=common_opts) env.Append( LIBPATH=[ env["ANDROID_NDK_ROOT"] + "/toolchains/" + target_subpath + "/prebuilt/" + host_subpath + "/lib/gcc/" + abi_subpath + "/4.9.x" ] ) env.Append( LIBPATH=[ env["ANDROID_NDK_ROOT"] + "/toolchains/" + target_subpath + "/prebuilt/" + host_subpath + "/" + abi_subpath + "/lib" ] ) env.Prepend(CPPPATH=["#platform/android"]) env.Append(CPPDEFINES=["ANDROID_ENABLED", "UNIX_ENABLED", "NO_FCNTL"]) env.Append(LIBS=["OpenSLES", "EGL", "GLESv3", "GLESv2", "android", "log", "z", "dl"]) # Return the project NDK version. # This is kept in sync with the value in 'platform/android/java/app/config.gradle'. def get_project_ndk_version(): return "21.4.7075529" # Return NDK version string in source.properties (adapted from the Chromium project). def get_env_ndk_version(path): if path is None: return None prop_file_path = os.path.join(path, "source.properties") try: with open(prop_file_path) as prop_file: for line in prop_file: key_value = list(map(lambda x: x.strip(), line.split("="))) if key_value[0] == "Pkg.Revision": return key_value[1] except Exception: print("Could not read source prop file '%s'" % prop_file_path) return None