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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_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-<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),
BoolVariable('android_stl', 'Enable Android STL support (for modules)', 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]
lib_sysroot = env["ANDROID_NDK_ROOT"] + "/platforms/" + env['ndk_platform'] + "/" + env['ARCH']
## Compile flags
# Disable exceptions and rtti on non-tools (template) builds
if env['tools'] or env['android_stl']:
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=['-frtti', "-std=gnu++14"])
else:
env.Append(CXXFLAGS=['-fno-rtti', '-fno-exceptions'])
# Don't use dynamic_cast, necessary with no-rtti.
env.Append(CPPDEFINES=['NO_SAFE_CAST'])
ndk_version = get_ndk_version(env["ANDROID_NDK_ROOT"])
if ndk_version != None and LooseVersion(ndk_version) >= LooseVersion("15.0.4075724"):
print("Using NDK unified headers")
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'])))])
else:
print("Using NDK deprecated headers")
env.Append(CPPFLAGS=["-isystem", lib_sysroot + "/usr/include"])
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
if ndk_version != None and LooseVersion(ndk_version) >= LooseVersion("15.0.4075724"):
if 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"])
else:
env.Append(LINKFLAGS=['-shared', '--sysroot=' + lib_sysroot, '-Wl,--warn-shared-textrel'])
if mt_link:
env.Append(LINKFLAGS=['-Wl,--threads'])
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
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