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setup.py
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from __future__ import annotations
import os
from dataclasses import dataclass, field
from typing import List
from archspec.cpu import host
from setuptools import Extension, setup
from setuptools.command.build_ext import build_ext
from wheel.bdist_wheel import bdist_wheel
ASTC_ENCODER_SOURCES = [
# cmake_core.cmake - static
"astcenc_averages_and_directions.cpp",
"astcenc_block_sizes.cpp",
"astcenc_color_quantize.cpp",
"astcenc_color_unquantize.cpp",
"astcenc_compress_symbolic.cpp",
"astcenc_compute_variance.cpp",
"astcenc_decompress_symbolic.cpp",
"astcenc_diagnostic_trace.cpp",
"astcenc_entry.cpp",
"astcenc_find_best_partitioning.cpp",
"astcenc_ideal_endpoints_and_weights.cpp",
"astcenc_image.cpp",
"astcenc_integer_sequence.cpp",
"astcenc_mathlib.cpp",
"astcenc_mathlib_softfloat.cpp",
"astcenc_partition_tables.cpp",
"astcenc_percentile_tables.cpp",
"astcenc_pick_best_endpoint_format.cpp",
"astcenc_quantization.cpp",
"astcenc_symbolic_physical.cpp",
"astcenc_weight_align.cpp",
"astcenc_weight_quant_xfer_tables.cpp",
]
ASTC_ENCODER_HEADERS = [
# sdist on github runners fails to include these via MANIFEST.in
"astcenc_diagnostic_trace.h",
"astcenc_internal_entry.h",
"astcenc_internal.h",
"astcenc_mathlib.h",
"astcenc_vecmathlib_avx2_8.h",
"astcenc_vecmathlib_common_4.h",
"astcenc_vecmathlib_neon_4.h",
"astcenc_vecmathlib_none_4.h",
"astcenc_vecmathlib_sse_4.h",
"astcenc_vecmathlib_sve8.h",
"astcenc_vecmathlib.h",
"astcenc.h",
]
NON_WIN_LINKER_OPTIONS = ["-pthread"]
@dataclass
class BuildConfig:
ASTCENC_NEON: int = 0
ASTCENC_SVE: int = 0
ASTCENC_SSE: int = 0
ASTCENC_AVX: int = 0
ASTCENC_POPCNT: int = 0
ASTCENC_F16C: int = 0
compile_flags: List[str] = field(default_factory=list)
msvc_flags: List[str] = field(default_factory=list)
unix_flags: List[str] = field(default_factory=list)
configs = {
"neon": BuildConfig(ASTCENC_NEON=1),
"sve128": BuildConfig(
ASTCENC_NEON=1,
ASTCENC_SVE=4,
compile_flags=["-march=armv8-a+sve", "-msve-vector-bits=128"],
),
"sve256": BuildConfig(
ASTCENC_NEON=1,
ASTCENC_SVE=8,
compile_flags=["-march=armv8-a+sve", "-msve-vector-bits=256"],
),
"sse2": BuildConfig(
ASTCENC_SSE=20,
msvc_flags=["/arch:SSE2"],
unix_flags=["-msse2", "-mno-sse4.1"],
),
"sse41": BuildConfig(
ASTCENC_SSE=41,
ASTCENC_POPCNT=1,
msvc_flags=["/arch:SSE4.1"],
unix_flags=["-msse4.1", "-mpopcnt"],
),
"avx2": BuildConfig(
ASTCENC_SSE=41,
ASTCENC_AVX=2,
ASTCENC_POPCNT=1,
ASTCENC_F16C=1,
msvc_flags=["/arch:AVX2"],
unix_flags=[
"-mavx2",
"-mpopcnt",
"-mf16c",
],
),
}
class CustomBuildExt(build_ext):
ENV_DEBUG_INFO = "DEBUG_INFO"
def build_extensions(self):
extra_compile_args: List[str] = []
extra_link_args: List[str] = []
# check for cibuildwheel
cibuildwheel = os.environ.get("CIBUILDWHEEL", False)
msvc: bool = False
if self.compiler.compiler_type == "msvc":
extra_compile_args = [
"/std:c++14",
"/wd4324",
"/EHsc",
"/W4",
"/fp:precise",
# msvc runtime version incompatibility fix
"/D_DISABLE_CONSTEXPR_MUTEX_CONSTRUCTOR",
]
# not in the astc-encoder CMakeLists.txt
# even tho it should improve performance
extra_link_args = ["/LTCG:incremental"]
# Generate debug info if specified (MSVC)
if os.environ.get(self.ENV_DEBUG_INFO, False):
extra_compile_args.append("/Od")
extra_compile_args.append("/Zi")
extra_link_args.append("/debug")
msvc = True
else:
extra_compile_args = [
"-std=c++14",
"-flto",
# "-ffp-model=precise", - clang only
"-ffp-contract=fast",
]
extra_link_args = ["-flto"]
# Generate debug info if specified (GCC/Clang/Mingw/etc)
if os.environ.get(self.ENV_DEBUG_INFO, False):
extra_compile_args.append("-O0")
extra_compile_args.append("-ggdb")
if not cibuildwheel:
# do some native optimizations for the current machine
# can't be used for generic builds
if "-arm" in self.plat_name or "-aarch64" in self.plat_name:
native_arg = "-mcpu=native"
else:
native_arg = "-march=native"
extra_compile_args.append(native_arg)
local_host = host()
if self.plat_name.endswith(("amd64", "x86_64")):
if cibuildwheel:
self.extensions.extend(
[
ASTCExtension("sse2", configs["sse2"]),
ASTCExtension("sse41", configs["sse41"]),
ASTCExtension("avx2", configs["avx2"]),
]
)
elif "avx2" in local_host.features:
self.extensions.append(ASTCExtension("avx2", configs["avx2"]))
elif "sse4_1" in local_host.features:
self.extensions.append(ASTCExtension("sse41", configs["sse41"]))
elif "sse2" in local_host.features:
self.extensions.append(ASTCExtension("sse2", configs["sse2"]))
elif self.plat_name.endswith(("arm64", "aarch64")):
# TODO: somehow detect neon, sve128, sve256
# atm assume neon is always available
self.extensions.append(ASTCExtension("neon", configs["neon"]))
elif self.plat_name.endswith("armv7l"):
# TODO: detect neon
pass
for ext in self.extensions:
ext: ASTCExtension
ext.extra_compile_args.extend(extra_compile_args)
ext.extra_link_args.extend(extra_link_args)
build_config = ext.build_config
ext.extra_compile_args.extend(build_config.compile_flags)
if msvc:
ext.extra_compile_args.extend(build_config.msvc_flags)
else:
ext.extra_compile_args.extend(build_config.unix_flags)
super().build_extensions()
class ASTCExtension(Extension):
build_config: BuildConfig
_needs_stub: bool = False
def __init__(self, name: str, build_config: BuildConfig):
module_name = f"_encoder_{name}"
super().__init__(
f"astc_encoder.{module_name}",
sources=[
"src/pybind.cpp",
"src/astcenc_error_metrics.cpp",
*[
f"src/astc-encoder/Source/{source}"
for source in ASTC_ENCODER_SOURCES
],
],
depends=[
"src/astcenc_error_metrics.hpp",
*[
f"src/astc-encoder/Source/{header}"
for header in ASTC_ENCODER_HEADERS
],
],
include_dirs=["src/astc-encoder/Source"],
language="c++",
extra_compile_args=build_config.compile_flags,
define_macros=[
("Py_LIMITED_API", "0x03070000"),
("MODULE_NAME", '"module_name"'),
("INIT_FUNC_NAME", f"PyInit_{module_name}"),
# arm
("ASTCENC_NEON", str(build_config.ASTCENC_NEON)),
("ASTCENC_SVE", str(build_config.ASTCENC_SVE)),
# x86
("ASTCENC_SSE", str(build_config.ASTCENC_SSE)),
("ASTCENC_AVX", str(build_config.ASTCENC_AVX)),
("ASTCENC_POPCNT", str(build_config.ASTCENC_POPCNT)),
("ASTCENC_F16C", str(build_config.ASTCENC_F16C)),
],
py_limited_api=True,
)
if os.name != "nt":
self.extra_compile_args.append("-pthread")
self.extra_link_args.append("-pthread")
self.build_config = build_config
class bdist_wheel_abi3(bdist_wheel):
def get_tag(self):
python, abi, plat = super().get_tag()
if python.startswith("cp"):
# on CPython, our wheels are abi3 and compatible back to 3.6
return "cp37", "abi3", plat
return python, abi, plat
setup(
name="astc_encoder_py",
packages=["astc_encoder"],
package_data={"astc_encoder": ["*.py", "*.pyi", "py.typed"]},
ext_modules=[ASTCExtension("none", BuildConfig())],
cmdclass={"build_ext": CustomBuildExt, "bdist_wheel": bdist_wheel_abi3},
)