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bpo-45798: Move _decimal build setup into configure (GH-29541)
Settings for :mod:`decimal` internal C extension are now detected by :program:`configure`. The bundled `libmpdec` library is built in ``Makefile``. Signed-off-by: Christian Heimes <christian@python.org>
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Christian Heimes
GitHub
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commit
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7 changed files with 313 additions and 112 deletions
121
setup.py
121
setup.py
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@ -7,6 +7,7 @@ import importlib.util
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import logging
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import os
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import re
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import shlex
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import sys
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import sysconfig
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import warnings
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@ -2016,117 +2017,27 @@ class PyBuildExt(build_ext):
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def detect_decimal(self):
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# Stefan Krah's _decimal module
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extra_compile_args = []
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undef_macros = []
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if '--with-system-libmpdec' in sysconfig.get_config_var("CONFIG_ARGS"):
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include_dirs = []
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libraries = ['mpdec']
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sources = ['_decimal/_decimal.c']
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depends = ['_decimal/docstrings.h']
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else:
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include_dirs = [os.path.abspath(os.path.join(self.srcdir,
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'Modules',
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'_decimal',
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'libmpdec'))]
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libraries = ['m']
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sources = [
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'_decimal/_decimal.c',
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'_decimal/libmpdec/basearith.c',
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'_decimal/libmpdec/constants.c',
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'_decimal/libmpdec/context.c',
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'_decimal/libmpdec/convolute.c',
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'_decimal/libmpdec/crt.c',
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'_decimal/libmpdec/difradix2.c',
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'_decimal/libmpdec/fnt.c',
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'_decimal/libmpdec/fourstep.c',
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'_decimal/libmpdec/io.c',
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'_decimal/libmpdec/mpalloc.c',
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'_decimal/libmpdec/mpdecimal.c',
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'_decimal/libmpdec/numbertheory.c',
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'_decimal/libmpdec/sixstep.c',
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'_decimal/libmpdec/transpose.c',
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]
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depends = [
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'_decimal/docstrings.h',
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'_decimal/libmpdec/basearith.h',
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'_decimal/libmpdec/bits.h',
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'_decimal/libmpdec/constants.h',
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'_decimal/libmpdec/convolute.h',
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'_decimal/libmpdec/crt.h',
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'_decimal/libmpdec/difradix2.h',
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'_decimal/libmpdec/fnt.h',
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'_decimal/libmpdec/fourstep.h',
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'_decimal/libmpdec/io.h',
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'_decimal/libmpdec/mpalloc.h',
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'_decimal/libmpdec/mpdecimal.h',
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'_decimal/libmpdec/numbertheory.h',
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'_decimal/libmpdec/sixstep.h',
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'_decimal/libmpdec/transpose.h',
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'_decimal/libmpdec/typearith.h',
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'_decimal/libmpdec/umodarith.h',
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]
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config = {
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'x64': [('CONFIG_64','1'), ('ASM','1')],
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'uint128': [('CONFIG_64','1'), ('ANSI','1'), ('HAVE_UINT128_T','1')],
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'ansi64': [('CONFIG_64','1'), ('ANSI','1')],
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'ppro': [('CONFIG_32','1'), ('PPRO','1'), ('ASM','1')],
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'ansi32': [('CONFIG_32','1'), ('ANSI','1')],
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'ansi-legacy': [('CONFIG_32','1'), ('ANSI','1'),
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('LEGACY_COMPILER','1')],
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'universal': [('UNIVERSAL','1')]
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}
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cc = sysconfig.get_config_var('CC')
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sizeof_size_t = sysconfig.get_config_var('SIZEOF_SIZE_T')
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machine = os.environ.get('PYTHON_DECIMAL_WITH_MACHINE')
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if machine:
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# Override automatic configuration to facilitate testing.
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define_macros = config[machine]
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elif MACOS:
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# Universal here means: build with the same options Python
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# was built with.
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define_macros = config['universal']
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elif sizeof_size_t == 8:
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if sysconfig.get_config_var('HAVE_GCC_ASM_FOR_X64'):
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define_macros = config['x64']
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elif sysconfig.get_config_var('HAVE_GCC_UINT128_T'):
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define_macros = config['uint128']
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else:
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define_macros = config['ansi64']
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elif sizeof_size_t == 4:
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ppro = sysconfig.get_config_var('HAVE_GCC_ASM_FOR_X87')
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if ppro and ('gcc' in cc or 'clang' in cc) and \
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not 'sunos' in HOST_PLATFORM:
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# solaris: problems with register allocation.
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# icc >= 11.0 works as well.
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define_macros = config['ppro']
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extra_compile_args.append('-Wno-unknown-pragmas')
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else:
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define_macros = config['ansi32']
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else:
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raise DistutilsError("_decimal: unsupported architecture")
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# Workarounds for toolchain bugs:
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if sysconfig.get_config_var('HAVE_IPA_PURE_CONST_BUG'):
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# Some versions of gcc miscompile inline asm:
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46491
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# https://gcc.gnu.org/ml/gcc/2010-11/msg00366.html
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extra_compile_args.append('-fno-ipa-pure-const')
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if sysconfig.get_config_var('HAVE_GLIBC_MEMMOVE_BUG'):
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# _FORTIFY_SOURCE wrappers for memmove and bcopy are incorrect:
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# https://sourceware.org/ml/libc-alpha/2010-12/msg00009.html
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undef_macros.append('_FORTIFY_SOURCE')
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sources = ['_decimal/_decimal.c']
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depends = ['_decimal/docstrings.h']
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define_macros = []
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cflags = sysconfig.get_config_var("DECIMAL_CFLAGS")
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extra_compile_args = shlex.split(cflags) if cflags else None
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# ldflags includes either system libmpdec or full path to
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# our static libmpdec.a.
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ldflags = sysconfig.get_config_var("DECIMAL_LDFLAGS")
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extra_link_args = shlex.split(ldflags) if ldflags else None
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libmpdec_a = sysconfig.get_config_var("LIBMPDEC_A")
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if libmpdec_a:
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depends.append(libmpdec_a)
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# Uncomment for extra functionality:
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#define_macros.append(('EXTRA_FUNCTIONALITY', 1))
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self.add(Extension('_decimal',
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include_dirs=include_dirs,
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libraries=libraries,
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define_macros=define_macros,
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undef_macros=undef_macros,
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extra_compile_args=extra_compile_args,
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extra_link_args=extra_link_args,
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sources=sources,
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depends=depends))
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