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import os, sys
import SCons.Util
import SCons.Builder
import SCons.Action
def cmake_default_flags(env):
if env.get("cmake_default_flags", ""):
return SCons.Util.CLVar(env["cmake_default_flags"])
config = {}
if "CC" in env:
config["CMAKE_C_COMPILER"] = env["CC"]
if "CXX" in env:
config["CMAKE_CXX_COMPILER"] = env["CXX"]
if env["platform"] == "android":
api = env["android_api_level"]
abi = {
"arm64": "arm64-v8a",
"arm32": "armeabi-v7a",
"x86_32": "x86",
"x86_64": "x86_64",
}[env["arch"]]
config["CMAKE_SYSTEM_NAME"] = "Android"
config["CMAKE_SYSTEM_VERSION"] = api
config["CMAKE_ANDROID_ARCH_ABI"] = abi
config["ANDROID_ABI"] = abi
config["CMAKE_TOOLCHAIN_FILE"] = "%s/build/cmake/android.toolchain.cmake" % env.get(
"ANDROID_NDK_ROOT", os.environ.get("ANDROID_NDK_ROOT", "")
)
config["CMAKE_ANDROID_STL_TYPE"] = "c++_static"
elif env["platform"] == "linux":
linux_flags = {
"x86_64": "-m64",
"x86_32": "-m32",
"arm32": "-march=armv7-a",
"arm64": "-march=armv8-a",
}.get(env["arch"], "")
if linux_flags:
config["CMAKE_C_FLAGS"] = linux_flags
config["CMAKE_CXX_FLAGS"] = linux_flags
elif env["platform"] == "macos":
if env["arch"] == "universal":
config["CMAKE_OSX_ARCHITECTURES"] = '"x86_64;arm64"'
else:
config["CMAKE_OSX_ARCHITECTURES"] = env["arch"]
if env.get("macos_deployment_target", "default") != "default":
config["CMAKE_OSX_DEPLOYMENT_TARGET"] = env["macos_deployment_target"]
if sys.platform != "darwin" and "OSXCROSS_ROOT" in os.environ:
config["CMAKE_AR"] = env["AR"]
config["CMAKE_RANLIB"] = env["RANLIB"]
if env["arch"] == "universal":
flags = "-arch x86_64 -arch arm64"
else:
flags = "-arch " + env["arch"]
if env["macos_deployment_target"] != "default":
flags += " -mmacosx-version-min=" + env["macos_deployment_target"]
config["CMAKE_C_FLAGS"] = flags
config["CMAKE_CXX_FLAGS"] = flags
elif env["platform"] == "ios":
if env["arch"] == "universal":
raise ValueError("iOS architecture not supported: %s" % env["arch"])
config["CMAKE_SYSTEM_NAME"] = "iOS"
config["CMAKE_OSX_ARCHITECTURES"] = env["arch"]
if env.get("ios_min_version", "default") != "default":
config["CMAKE_OSX_DEPLOYMENT_TARGET"] = env["ios_min_version"]
if env["ios_simulator"]:
config["CMAKE_OSX_SYSROOT"] = "iphonesimulator"
elif env["platform"] == "windows":
config["CMAKE_SYSTEM_NAME"] = "Windows"
flags = ["-D%s=%s" % it for it in config.items()]
if env["CMAKEGENERATOR"]:
flags.extend(["-G", env["CMAKEGENERATOR"]])
elif env["platform"] == "windows":
if env.get("is_msvc", False):
flags.extend(["-G", "NMake Makefiles"])
elif sys.platform in ["win32", "msys", "cygwin"]:
flags.extend(["-G", "Ninja"])
else:
flags.extend(["-G", "Unix Makefiles"])
return flags
def cmake_emitter(target, source, env):
return [str(target[0]) + "/CMakeCache.txt"] + target[1:], [str(source[0]) + "/CMakeLists.txt"] + source[1:]
def cmake_generator(target, source, env, for_signature):
# Strip the -j option for signature to avoid rebuilding when num_jobs changes.
build = env["CMAKEBUILDCOM"].replace("-j$CMAKEBUILDJOBS", "") if for_signature else env["CMAKEBUILDCOM"]
return [
SCons.Action.Action("$CMAKECONFCOM", "$CMAKECONFCOMSTR"),
SCons.Action.Action(build, "$CMAKEBUILDCOMSTR"),
]
def cmake_build(env, target_dir, source_dir, cmake_outputs=[], cmake_targets=[], cmake_options=[], dependencies=[]):
cmake_env = env.Clone()
target = env.Dir("{}/{}/{}".format(target_dir, env["platform"], env["arch"]))
source = env.Dir(source_dir)
builder_targets = [target] + [str(target) + "/" + f for f in cmake_outputs]
builder_sources = [source] + dependencies
cmake_env.Append(CMAKECONFFLAGS=["-D%s=%s" % it for it in cmake_options.items()])
if len(cmake_targets) > 0:
cmake_env.Append(CMAKEBUILDFLAGS=["-t"] + [t for t in cmake_targets])
return cmake_env.CMake(builder_targets, builder_sources)
def options(opts):
opts.Add("cmake_default_flags", "Default CMake platform flags override, will be autodetected if not specified.", "")
def exists(env):
return True
def generate(env):
env["CMAKE"] = "cmake"
env["_cmake_default_flags"] = cmake_default_flags
env["CMAKEDEFAULTFLAGS"] = "${_cmake_default_flags(__env__)}"
env["CMAKEGENERATOR"] = ""
env["CMAKECONFFLAGS"] = SCons.Util.CLVar("")
env["CMAKECONFCOM"] = "$CMAKE -B ${TARGET.dir} $CMAKEDEFAULTFLAGS $CMAKECONFFLAGS ${SOURCE.dir}"
env["CMAKEBUILDJOBS"] = "${__env__.GetOption('num_jobs')}"
env["CMAKEBUILDFLAGS"] = SCons.Util.CLVar("")
env["CMAKEBUILDCOM"] = "$CMAKE --build ${TARGET.dir} $CMAKEBUILDFLAGS -j$CMAKEBUILDJOBS"
env["BUILDERS"]["CMake"] = SCons.Builder.Builder(generator=cmake_generator, emitter=cmake_emitter)
env.AddMethod(cmake_build, "CMakeBuild")
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