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godot/platform/android/detect.py
Rémi Verschelde d52b70fb5e SCons: Always use env.Prepend for CPPPATH 
Include paths are processed from left to right, so we use Prepend to
ensure that paths to bundled thirdparty files will have precedence over
system paths (e.g. `/usr/include` should have lowest priority).
2019-04-30 13:12:06 +02:00

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Python
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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', 'armv6', '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', 'armv6', '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'] == 'armv6':
env['ARCH'] = 'arch-arm'
env.extra_suffix = ".armv6" + env.extra_suffix
target_subpath = "arm-linux-androideabi-4.9"
abi_subpath = "arm-linux-androideabi"
arch_subpath = "armeabi"
can_vectorize = False
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(CPPFLAGS=['-DNDEBUG'])
else: #optimize for size
env.Append(CCFLAGS=['-Os'])
env.Append(CPPFLAGS=['-DNDEBUG'])
env.Append(LINKFLAGS=['-Os'])
if (can_vectorize):
env.Append(CCFLAGS=['-ftree-vectorize'])
if (env["target"] == "release_debug"):
env.Append(CPPFLAGS=['-DDEBUG_ENABLED'])
elif (env["target"] == "debug"):
env.Append(LINKFLAGS=['-O0'])
env.Append(CCFLAGS=['-O0', '-g', '-fno-limit-debug-info'])
env.Append(CPPFLAGS=['-D_DEBUG', '-UNDEBUG', '-DDEBUG_ENABLED', '-DDEBUG_MEMORY_ENABLED'])
## 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
if 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'])
env.Append(CPPFLAGS=['-DNO_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(CPPFLAGS=["-D__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(CPPFLAGS='-DNO_STATVFS -DGLES_ENABLED'.split())
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"] == "armv6":
target_opts = ['-target', 'armv6-none-linux-androideabi']
env.Append(CCFLAGS='-march=armv6 -mfpu=vfp -mfloat-abi=softfp'.split())
env.Append(CPPFLAGS=['-D__ARM_ARCH_6__'])
elif env["android_arch"] == "armv7":
target_opts = ['-target', 'armv7-none-linux-androideabi']
env.Append(CCFLAGS='-march=armv7-a -mfloat-abi=softfp'.split())
env.Append(CPPFLAGS='-D__ARM_ARCH_7__ -D__ARM_ARCH_7A__'.split())
if env['android_neon']:
env['neon_enabled'] = True
env.Append(CCFLAGS=['-mfpu=neon'])
env.Append(CPPFLAGS=['-D__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(CPPFLAGS=['-D__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(CPPFLAGS=['-DANDROID_ENABLED', '-DUNIX_ENABLED', '-DNO_FCNTL'])
env.Append(LIBS=['OpenSLES', 'EGL', 'GLESv3', '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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