123 lines
4.6 KiB
Python
123 lines
4.6 KiB
Python
# -*- coding: utf-8 -*-
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"""
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setup helpers for libev.
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Importing this module should have no side-effects; in particular,
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it shouldn't attempt to cythonize anything.
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"""
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from __future__ import print_function, absolute_import, division
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import os.path
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from _setuputils import Extension
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from _setuputils import system
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from _setuputils import dep_abspath
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from _setuputils import quoted_dep_abspath
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from _setuputils import WIN
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from _setuputils import LIBRARIES
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from _setuputils import DEFINE_MACROS
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from _setuputils import glob_many
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from _setuputils import should_embed
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from _setuputils import get_include_dirs
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LIBEV_EMBED = should_embed('libev')
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# Configure libev in place
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libev_configure_command = ' '.join([
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"(cd ", quoted_dep_abspath('libev'),
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" && sh ./configure -C > configure-output.txt",
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")",
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])
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def configure_libev(build_command=None, extension=None): # pylint:disable=unused-argument
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# build_command is an instance of ConfiguringBuildExt.
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# extension is an instance of the setuptools Extension object.
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#
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# This is invoked while `build_command` is in the middle of its `run()`
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# method.
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# Both of these arguments are unused here so that we can use this function
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# both from a build command and from libev/_corecffi_build.py
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if WIN:
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return
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libev_path = dep_abspath('libev')
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config_path = os.path.join(libev_path, 'config.h')
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if os.path.exists(config_path):
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print("Not configuring libev, 'config.h' already exists")
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return
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system(libev_configure_command)
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def build_extension():
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# Return the un-cythonized extension.
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# This can be used to access things like `libraries` and `include_dirs`
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# and `define_macros` so we DRY.
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include_dirs = get_include_dirs()
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include_dirs.append(os.path.abspath(os.path.join('src', 'gevent', 'libev')))
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if LIBEV_EMBED:
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include_dirs.append(dep_abspath('libev'))
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CORE = Extension(name='gevent.libev.corecext',
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sources=[
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'src/gevent/libev/corecext.pyx',
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'src/gevent/libev/callbacks.c',
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],
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include_dirs=include_dirs,
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libraries=list(LIBRARIES),
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define_macros=list(DEFINE_MACROS),
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depends=glob_many('src/gevent/libev/callbacks.*',
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'src/gevent/libev/stathelper.c',
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'src/gevent/libev/libev*.h',
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'deps/libev/*.[ch]'))
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# While we don't actually use periodic watchers,
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# on Windows we need to enable them to work around an issue
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# in libev 4.33 where ``have_monotonic`` is not defined.
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EV_PERIODIC_ENABLE = "0"
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if WIN:
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CORE.define_macros.append(('EV_STANDALONE', '1'))
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EV_PERIODIC_ENABLE = "1"
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# QQQ libev can also use -lm, however it seems to be added implicitly
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if LIBEV_EMBED:
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CORE.define_macros += [
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('LIBEV_EMBED', '1'),
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# we don't use void* data in the cython implementation;
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# the CFFI implementation does and removes this line.
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('EV_COMMON', ''),
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# libev watchers that we don't use currently:
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('EV_CLEANUP_ENABLE', '0'),
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('EV_EMBED_ENABLE', '0'),
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("EV_PERIODIC_ENABLE", EV_PERIODIC_ENABLE),
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# Time keeping. If possible, use the realtime and/or monotonic
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# clocks. On Linux, this can reduce the number of observable syscalls.
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# On older linux, such as the version in manylinux2010, this requires
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# linking to lib rt. We handle this in make-manylinux. Newer versions
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# generally don't need that.
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("EV_USE_REALTIME", "1"),
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("EV_USE_MONOTONIC", "1"),
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# use the builtin floor() function. Every modern platform should
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# have this, right?
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("EV_USE_FLOOR", "1"),
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]
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CORE.configure = configure_libev
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if os.environ.get('GEVENTSETUP_EV_VERIFY') is not None:
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CORE.define_macros.append(
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('EV_VERIFY', os.environ['GEVENTSETUP_EV_VERIFY']))
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# EV_VERIFY is implemented using assert(), which only works if
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# NDEBUG is *not* defined. distutils likes to define NDEBUG by default,
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# meaning that we get no verification in embedded mode. Since that's the
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# most common testing configuration, that's not good.
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CORE.undef_macros.append('NDEBUG')
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else:
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CORE.define_macros += [('LIBEV_EMBED', '0')]
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CORE.libraries.append('ev')
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CORE.configure = lambda *args: print("libev not embedded, not configuring")
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return CORE
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