136 lines
5.2 KiB
Python
136 lines
5.2 KiB
Python
import os
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import re
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import subprocess
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import sys
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from setuptools import Extension, setup
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from setuptools.command.build_ext import build_ext
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# Convert distutils Windows platform specifiers to CMake -A arguments
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PLAT_TO_CMAKE = {
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"win32": "Win32",
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"win-amd64": "x64",
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"win-arm32": "ARM",
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"win-arm64": "ARM64",
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}
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# A CMakeExtension needs a sourcedir instead of a file list.
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# The name must be the _single_ output extension from the CMake build.
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# If you need multiple extensions, see scikit-build.
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class CMakeExtension(Extension):
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def __init__(self, name, sourcedir=""):
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Extension.__init__(self, name, sources=[])
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self.sourcedir = os.path.abspath(sourcedir)
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class CMakeBuild(build_ext):
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def build_extension(self, ext):
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extdir = os.path.abspath(os.path.dirname(self.get_ext_fullpath(ext.name)))
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# required for auto-detection & inclusion of auxiliary "native" libs
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if not extdir.endswith(os.path.sep):
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extdir += os.path.sep
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debug = int(os.environ.get("DEBUG", 0)) if self.debug is None else self.debug
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cfg = "Debug" if debug else "Release"
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# CMake lets you override the generator - we need to check this.
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# Can be set with Conda-Build, for example.
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cmake_generator = os.environ.get("CMAKE_GENERATOR", "")
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# Set Python_EXECUTABLE instead if you use PYBIND11_FINDPYTHON
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# EXAMPLE_VERSION_INFO shows you how to pass a value into the C++ code
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# from Python.
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cmake_args = [
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f"-DCMAKE_LIBRARY_OUTPUT_DIRECTORY={extdir}",
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f"-DPYTHON_EXECUTABLE={sys.executable}",
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f"-DCMAKE_BUILD_TYPE={cfg}", # not used on MSVC, but no harm
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]
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build_args = []
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# Adding CMake arguments set as environment variable
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# (needed e.g. to build for ARM OSx on conda-forge)
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if "CMAKE_ARGS" in os.environ:
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cmake_args += [item for item in os.environ["CMAKE_ARGS"].split(" ") if item]
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# In this example, we pass in the version to C++. You might not need to.
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cmake_args += [f"-DEXAMPLE_VERSION_INFO={self.distribution.get_version()}"]
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if self.compiler.compiler_type != "msvc":
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# Using Ninja-build since it a) is available as a wheel and b)
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# multithreads automatically. MSVC would require all variables be
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# exported for Ninja to pick it up, which is a little tricky to do.
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# Users can override the generator with CMAKE_GENERATOR in CMake
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# 3.15+.
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if not cmake_generator:
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try:
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import ninja # noqa: F401
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cmake_args += ["-GNinja"]
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except ImportError:
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pass
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else:
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# Single config generators are handled "normally"
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single_config = any(x in cmake_generator for x in {"NMake", "Ninja"})
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# CMake allows an arch-in-generator style for backward compatibility
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contains_arch = any(x in cmake_generator for x in {"ARM", "Win64"})
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# Specify the arch if using MSVC generator, but only if it doesn't
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# contain a backward-compatibility arch spec already in the
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# generator name.
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if not single_config and not contains_arch:
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cmake_args += ["-A", PLAT_TO_CMAKE[self.plat_name]]
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# Multi-config generators have a different way to specify configs
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if not single_config:
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cmake_args += [
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f"-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{cfg.upper()}={extdir}"
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]
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build_args += ["--config", cfg]
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if sys.platform.startswith("darwin"):
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# Cross-compile support for macOS - respect ARCHFLAGS if set
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archs = re.findall(r"-arch (\S+)", os.environ.get("ARCHFLAGS", ""))
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if archs:
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cmake_args += ["-DCMAKE_OSX_ARCHITECTURES={}".format(";".join(archs))]
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# Set CMAKE_BUILD_PARALLEL_LEVEL to control the parallel build level
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# across all generators.
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if "CMAKE_BUILD_PARALLEL_LEVEL" not in os.environ:
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# self.parallel is a Python 3 only way to set parallel jobs by hand
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# using -j in the build_ext call, not supported by pip or PyPA-build.
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if hasattr(self, "parallel") and self.parallel:
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# CMake 3.12+ only.
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build_args += [f"-j{self.parallel}"]
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build_args += ['--target', 'lm_decoder']
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if not os.path.exists(self.build_temp):
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os.makedirs(self.build_temp)
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subprocess.check_call(
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["cmake", ext.sourcedir] + cmake_args, cwd=self.build_temp
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)
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subprocess.check_call(
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["cmake", "--build", "."] + build_args, cwd=self.build_temp
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)
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# The information here can also be placed in setup.cfg - better separation of
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# logic and declaration, and simpler if you include description/version in a file.
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setup(
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name="lm_decoder",
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version="0.0.1",
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author="Chaofei fan",
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author_email="stfan@stanford.edu",
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description="LM Decoder",
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long_description="",
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ext_modules=[CMakeExtension("lm_decoder")],
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cmdclass={"build_ext": CMakeBuild},
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zip_safe=False,
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python_requires=">=3.6",
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)
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