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import os
import sys
from methods import detect_darwin_sdk_path
def is_active():
return True
def get_name():
return "iOS"
def can_build():
if sys.platform == "darwin" or ("OSXCROSS_IOS" in os.environ):
return True
return False
def get_opts():
from SCons.Variables import BoolVariable
return [
(
"IOS_TOOLCHAIN_PATH",
"Path to iOS toolchain",
"/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain",
),
("IOS_SDK_PATH", "Path to the iOS SDK", ""),
BoolVariable("ios_simulator", "Build for iOS Simulator", False),
BoolVariable("ios_exceptions", "Enable exceptions", False),
("ios_triple", "Triple for ios toolchain", ""),
]
def get_flags():
return [
("arch", "arm64"), # Default for convenience.
("tools", False),
("use_volk", False),
]
def configure(env):
# Validate arch.
supported_arches = ["x86_64", "arm64"]
if env["arch"] not in supported_arches:
print(
'Unsupported CPU architecture "%s" for iOS. Supported architectures are: %s.'
% (env["arch"], ", ".join(supported_arches))
)
sys.exit()
## Build type
if env["target"].startswith("release"):
env.Append(CPPDEFINES=["NDEBUG", ("NS_BLOCK_ASSERTIONS", 1)])
if env["optimize"] == "speed": # optimize for speed (default)
# `-O2` is more friendly to debuggers than `-O3`, leading to better crash backtraces
# when using `target=release_debug`.
opt = "-O3" if env["target"] == "release" else "-O2"
env.Append(CCFLAGS=[opt, "-ftree-vectorize", "-fomit-frame-pointer"])
env.Append(LINKFLAGS=[opt])
elif env["optimize"] == "size": # optimize for size
env.Append(CCFLAGS=["-Os", "-ftree-vectorize"])
env.Append(LINKFLAGS=["-Os"])
elif env["target"] == "debug":
env.Append(CCFLAGS=["-gdwarf-2", "-O0"])
env.Append(CPPDEFINES=["_DEBUG", ("DEBUG", 1)])
## LTO
if env["lto"] == "auto": # Disable by default as it makes linking in Xcode very slow.
env["lto"] = "none"
if env["lto"] != "none":
if env["lto"] == "thin":
env.Append(CCFLAGS=["-flto=thin"])
env.Append(LINKFLAGS=["-flto=thin"])
else:
env.Append(CCFLAGS=["-flto"])
env.Append(LINKFLAGS=["-flto"])
## Compiler configuration
# Save this in environment for use by other modules
if "OSXCROSS_IOS" in os.environ:
env["osxcross"] = True
env["ENV"]["PATH"] = env["IOS_TOOLCHAIN_PATH"] + "/Developer/usr/bin/:" + env["ENV"]["PATH"]
compiler_path = "$IOS_TOOLCHAIN_PATH/usr/bin/${ios_triple}"
s_compiler_path = "$IOS_TOOLCHAIN_PATH/Developer/usr/bin/"
ccache_path = os.environ.get("CCACHE")
if ccache_path is None:
env["CC"] = compiler_path + "clang"
env["CXX"] = compiler_path + "clang++"
env["S_compiler"] = s_compiler_path + "gcc"
else:
# there aren't any ccache wrappers available for iOS,
# 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["S_compiler"] = ccache_path + " " + s_compiler_path + "gcc"
env["AR"] = compiler_path + "ar"
env["RANLIB"] = compiler_path + "ranlib"
## Compile flags
if env["ios_simulator"]:
detect_darwin_sdk_path("iossimulator", env)
env.Append(ASFLAGS=["-mios-simulator-version-min=13.0"])
env.Append(CCFLAGS=["-mios-simulator-version-min=13.0"])
env.extra_suffix = ".simulator" + env.extra_suffix
else:
detect_darwin_sdk_path("ios", env)
env.Append(ASFLAGS=["-miphoneos-version-min=11.0"])
env.Append(CCFLAGS=["-miphoneos-version-min=11.0"])
if env["arch"] == "x86_64":
if not env["ios_simulator"]:
print("ERROR: Building for iOS with 'arch=x86_64' requires 'ios_simulator=yes'.")
sys.exit(255)
env["ENV"]["MACOSX_DEPLOYMENT_TARGET"] = "10.9"
env.Append(
CCFLAGS=(
"-fobjc-arc -arch x86_64"
" -fobjc-abi-version=2 -fobjc-legacy-dispatch -fmessage-length=0 -fpascal-strings -fblocks"
" -fasm-blocks -isysroot $IOS_SDK_PATH"
).split()
)
env.Append(ASFLAGS=["-arch", "x86_64"])
elif env["arch"] == "arm64":
env.Append(
CCFLAGS=(
"-fobjc-arc -arch arm64 -fmessage-length=0 -fno-strict-aliasing"
" -fdiagnostics-print-source-range-info -fdiagnostics-show-category=id -fdiagnostics-parseable-fixits"
" -fpascal-strings -fblocks -fvisibility=hidden -MMD -MT dependencies"
" -isysroot $IOS_SDK_PATH".split()
)
)
env.Append(ASFLAGS=["-arch", "arm64"])
env.Append(CPPDEFINES=["NEED_LONG_INT"])
# Disable exceptions on non-tools (template) builds
if not env["tools"]:
if env["ios_exceptions"]:
env.Append(CCFLAGS=["-fexceptions"])
else:
env.Append(CCFLAGS=["-fno-exceptions"])
# Temp fix for ABS/MAX/MIN macros in iOS SDK blocking compilation
env.Append(CCFLAGS=["-Wno-ambiguous-macro"])
env.Prepend(
CPPPATH=[
"$IOS_SDK_PATH/usr/include",
"$IOS_SDK_PATH/System/Library/Frameworks/AudioUnit.framework/Headers",
]
)
env.Prepend(CPPPATH=["#platform/ios"])
env.Append(CPPDEFINES=["IOS_ENABLED", "UNIX_ENABLED", "COREAUDIO_ENABLED"])
if env["vulkan"]:
env.Append(CPPDEFINES=["VULKAN_ENABLED"])
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