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_NDK_ROOT" 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', os.environ.get("ANDROID_NDK_ROOT", 0)), ('ndk_platform', 'Target platform (android-, 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), ] 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) def configure(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']) env.Append(CPPDEFINES=['NDEBUG']) else: # optimize for size env.Append(CCFLAGS=['-Os']) env.Append(CPPDEFINES=['NDEBUG']) env.Append(LINKFLAGS=['-Os']) 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', 'DEBUG_MEMORY_ENABLED']) env.Append(CPPFLAGS=['-UNDEBUG']) # Compiler configuration env['SHLIBSUFFIX'] = '.so' if env['PLATFORM'] == 'win32': env.Tool('gcc') env.use_windows_spawn_fix() mt_link = True 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: mt_link = False host_subpath = "windows" if env["android_arch"] == "arm64v8": mt_link = False 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 = ['-fno-integrated-as', '-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"]) env.Append(CXXFLAGS=["-std=gnu++14"]) # 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']) 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_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 NDK version string in source.properties (adapted from the Chromium project). def get_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: print("Could not read source prop file '%s'" % prop_file_path) return None