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virtualx-engine/platform/android/detect.py
Rémi Verschelde 7bf9787921 SCons: Format buildsystem files with psf/black 
Configured for a max line length of 120 characters.

psf/black is very opinionated and purposely doesn't leave much room for
configuration. The output is mostly OK so that should be fine for us,
but some things worth noting:

- Manually wrapped strings will be reflowed, so by using a line length
  of 120 for the sake of preserving readability for our long command
  calls, it also means that some manually wrapped strings are back on
  the same line and should be manually merged again.

- Code generators using string concatenation extensively look awful,
  since black puts each operand on a single line. We need to refactor
  these generators to use more pythonic string formatting, for which
  many options are available (`%`, `format` or f-strings).

- CI checks and a pre-commit hook will be added to ensure that future
  buildsystem changes are well-formatted.

(cherry picked from commit cd4e46ee65)
2020-06-10 15:30:52 +02:00

334 lines
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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", "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()
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 = ["-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"])
# 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
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