def __init__(self, platform, android_abi, asan_enabled_by_default=False):
super(AndroidConfiguration, self).__init__(platform,
asan_enabled_by_default)
self._target_toolchain = None
self._host_toolchain = None
self.AppendApplicationConfigurationPath(os.path.dirname(__file__))
self.android_abi = android_abi
self.android_home = sdk_utils.GetSdkPath()
self.android_ndk_home = sdk_utils.GetNdkPath()
print('Using Android SDK at {}'.format(self.android_home))
print('Using Android NDK at {}'.format(self.android_ndk_home))
def GetTargetToolchain(self):
if not self._target_toolchain:
tool_prefix = os.path.join(sdk_utils.GetNdkPath(), 'toolchains',
'llvm', 'prebuilt', 'linux-x86_64',
'bin', '')
cc_path = tool_prefix + _ABI_TOOL_NAMES[self.android_abi][0]
cxx_path = cc_path + '++'
ar_path = tool_prefix + _ABI_TOOL_NAMES[self.android_abi][1]
clang_flags = [
# We'll pretend not to be Linux, but Starboard instead.
'-U__linux__',
# libwebp uses the cpufeatures library to detect ARM NEON support
'-I{}/sources/android/cpufeatures'.format(self.android_ndk_home
),
# Mimic build/cmake/android.toolchain.cmake in the Android NDK.
'-ffunction-sections',
'-funwind-tables',
'-fstack-protector-strong',
'-no-canonical-prefixes',
# Other flags
'-fsigned-char',
'-fno-limit-debug-info',
'-fno-exceptions',
'-fcolor-diagnostics',
'-fno-strict-aliasing', # See http://crbug.com/32204
# Default visibility is hidden to enable dead stripping.
'-fvisibility=hidden',
# Any warning will stop the build.
'-Werror',
# Disable errors for the warning till the Android NDK r19 is fixed.
# The warning is trigger when compiling .c files and complains for
# '-stdlib=libc++' which is added by the NDK.
'-Wno-error=unused-command-line-argument',
# Don't warn about register variables (in base and net)
'-Wno-deprecated-register',
# Don't warn about deprecated ICU methods (in googleurl and net)
'-Wno-deprecated-declarations',
# Skia doesn't use overrides.
'-Wno-inconsistent-missing-override',
# shifting a negative signed value is undefined
'-Wno-shift-negative-value',
# Don't warn for implicit sign conversions. (in v8 and protobuf)
'-Wno-sign-conversion',
]
clang_defines = [
# Enable compile-time decisions based on the ABI
'ANDROID_ABI={}'.format(self.android_abi),
# -DANDROID is an argument to some ifdefs in the NDK's eglplatform.h
'ANDROID',
# Cobalt on Linux flag
'COBALT_LINUX',
# So that we get the PRI* macros from inttypes.h
'__STDC_FORMAT_MACROS',
# Enable GNU extensions to get prototypes like ffsl.
'_GNU_SOURCE=1',
# Undefining __linux__ causes the system headers to make wrong
# assumptions about which C-library is used on the platform.
'__BIONIC__',
# Undefining __linux__ leaves libc++ without a threads implementation.
# TODO: See if there's a way to make libcpp threading use Starboard.
'_LIBCPP_HAS_THREAD_API_PTHREAD',
]
linker_flags = [
# Use the static LLVM libc++.
'-static-libstdc++',
# Mimic build/cmake/android.toolchain.cmake in the Android NDK.
'-Wl,--build-id',
'-Wl,--warn-shared-textrel',
'-Wl,--fatal-warnings',
'-Wl,--gc-sections',
'-Wl,-z,nocopyreloc',
# Wrapper synchronizes punch-out video bounds with the UI frame.
'-Wl,--wrap=eglSwapBuffers',
]
self._target_toolchain = [
clang.CCompiler(path=cc_path,
defines=clang_defines,
extra_flags=clang_flags),
clang.CxxCompiler(path=cxx_path,
defines=clang_defines,
extra_flags=clang_flags + [
'-std=c++11',
]),
clang.AssemblerWithCPreprocessor(path=cc_path,
defines=clang_defines,
extra_flags=clang_flags),
ar.StaticThinLinker(path=ar_path),
ar.StaticLinker(path=ar_path),
clangxx.SharedLibraryLinker(path=cxx_path,
extra_flags=linker_flags),
clangxx.ExecutableLinker(path=cxx_path,
extra_flags=linker_flags),
]
return self._target_toolchain