83 lines
2.4 KiB
Python
83 lines
2.4 KiB
Python
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"""Helpers to check build environment before actual build of scikit-learn"""
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import os
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import sys
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import glob
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import tempfile
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import textwrap
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import subprocess
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from setuptools.command.build_ext import customize_compiler, new_compiler
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def compile_test_program(code, extra_preargs=[], extra_postargs=[]):
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"""Check that some C code can be compiled and run"""
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ccompiler = new_compiler()
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customize_compiler(ccompiler)
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# extra_(pre/post)args can be a callable to make it possible to get its
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# value from the compiler
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if callable(extra_preargs):
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extra_preargs = extra_preargs(ccompiler)
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if callable(extra_postargs):
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extra_postargs = extra_postargs(ccompiler)
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start_dir = os.path.abspath(".")
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with tempfile.TemporaryDirectory() as tmp_dir:
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try:
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os.chdir(tmp_dir)
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# Write test program
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with open("test_program.c", "w") as f:
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f.write(code)
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os.mkdir("objects")
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# Compile, test program
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ccompiler.compile(
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["test_program.c"], output_dir="objects", extra_postargs=extra_postargs
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)
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# Link test program
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objects = glob.glob(os.path.join("objects", "*" + ccompiler.obj_extension))
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ccompiler.link_executable(
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objects,
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"test_program",
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extra_preargs=extra_preargs,
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extra_postargs=extra_postargs,
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)
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if "PYTHON_CROSSENV" not in os.environ:
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# Run test program if not cross compiling
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# will raise a CalledProcessError if return code was non-zero
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output = subprocess.check_output("./test_program")
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output = output.decode(sys.stdout.encoding or "utf-8").splitlines()
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else:
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# Return an empty output if we are cross compiling
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# as we cannot run the test_program
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output = []
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except Exception:
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raise
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finally:
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os.chdir(start_dir)
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return output
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def basic_check_build():
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"""Check basic compilation and linking of C code"""
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if "PYODIDE_PACKAGE_ABI" in os.environ:
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# The following check won't work in pyodide
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return
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code = textwrap.dedent(
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"""\
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#include <stdio.h>
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int main(void) {
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return 0;
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}
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"""
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)
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compile_test_program(code)
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