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pandemonium_engine/platform/android/detect.py

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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-19")', "android-19"),
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
elif 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"])
elif env["target"] == "debug":
env.Append(LINKFLAGS=["-O0"])
env.Append(CCFLAGS=["-O0", "-g", "-fno-limit-debug-info"])
env.Append(CPPDEFINES=["_DEBUG"])
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
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