51 lines
1.6 KiB
Python
51 lines
1.6 KiB
Python
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"""
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Cythonize the .pyx file for sdist, and compile it for wheels.
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NB: produced wheels are not valid, but the sdist should be.
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"""
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import os
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from Cython.Build import cythonize
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from subprocess import check_output, CalledProcessError, DEVNULL, call
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from tempfile import TemporaryFile
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from setuptools.command.build_py import build_py
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def check_include(library_name, header):
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command = [os.environ.get("PKG_CONFIG", "pkg-config"), "--cflags", library_name]
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try:
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cflags = check_output(command).decode("utf-8").split()
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except FileNotFoundError:
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print("pkg-config not found.")
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return False
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except CalledProcessError:
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# pkg-config already prints the missing libraries on stderr.
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return False
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command = [os.environ.get("CC", "cc")] + cflags + ["-E", "-"]
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with TemporaryFile("w+") as c_file:
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c_file.write("#include <%s>" % header)
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c_file.seek(0)
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try:
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return call(command, stdin=c_file, stdout=DEVNULL, stderr=DEVNULL) == 0
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except FileNotFoundError:
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print("%s headers not found." % library_name)
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return False
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class Build(build_py):
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def run(self):
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self.run_command("build_ext")
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return super().run()
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def initialize_options(self):
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super().initialize_options()
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has_python_headers = check_include("python3", "Python.h")
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has_stringprep_headers = check_include("libidn", "stringprep.h")
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if has_python_headers and has_stringprep_headers:
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self.distribution.ext_modules = cythonize("slixmpp/stringprep.pyx")
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else:
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print("Falling back to the slow stringprep module.")
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