setup.py - platform/external/python/cffi - Git at Google

 import sys, os
 import subprocess
 import errno

 # on Windows we give up and always import setuptools early to fix things for us
 if sys.platform == "win32":
     import setuptools


 sources = ['c/_cffi_backend.c']
 libraries = ['ffi']
 include_dirs = ['/usr/include/ffi',
                 '/usr/include/libffi']    # may be changed by pkg-config
 define_macros = []
 library_dirs = []
 extra_compile_args = []
 extra_link_args = []


 def _ask_pkg_config(resultlist, option, result_prefix='', sysroot=False):
     pkg_config = os.environ.get('PKG_CONFIG','pkg-config')
     try:
         p = subprocess.Popen([pkg_config, option, 'libffi'],
                              stdout=subprocess.PIPE)
     except OSError as e:
         if e.errno not in [errno.ENOENT, errno.EACCES]:
             raise
     else:
         t = p.stdout.read().decode().strip()
         p.stdout.close()
         if p.wait() == 0:
             res = t.split()
             # '-I/usr/...' -> '/usr/...'
             for x in res:
                 assert x.startswith(result_prefix)
             res = [x[len(result_prefix):] for x in res]
             #print 'PKG_CONFIG:', option, res
             #
             sysroot = sysroot and os.environ.get('PKG_CONFIG_SYSROOT_DIR', '')
             if sysroot:
                 # old versions of pkg-config don't support this env var,
                 # so here we emulate its effect if needed
                 res = [path if path.startswith(sysroot)
                             else sysroot + path
                          for path in res]
             #
             resultlist[:] = res

 no_compiler_found = False
 def no_working_compiler_found():
     sys.stderr.write("""
     No working compiler found, or bogus compiler options passed to
     the compiler from Python's standard "distutils" module.  See
     the error messages above.  Likely, the problem is not related
     to CFFI but generic to the setup.py of any Python package that
     tries to compile C code.  (Hints: on OS/X 10.8, for errors about
     -mno-fused-madd see http://stackoverflow.com/questions/22313407/
     Otherwise, see https://wiki.python.org/moin/CompLangPython or
     the IRC channel #python on irc.freenode.net.)

     Trying to continue anyway.  If you are trying to install CFFI from
     a build done in a different context, you can ignore this warning.
     \n""")
     global no_compiler_found
     no_compiler_found = True

 def get_config():
     from distutils.core import Distribution
     from distutils.sysconfig import get_config_vars
     get_config_vars()      # workaround for a bug of distutils, e.g. on OS/X
     config = Distribution().get_command_obj('config')
     return config

 def ask_supports_thread():
     config = get_config()
     ok = (sys.platform != 'win32' and
           config.try_compile('__thread int some_threadlocal_variable_42;'))
     if ok:
         define_macros.append(('USE__THREAD', None))
     else:
         ok1 = config.try_compile('int some_regular_variable_42;')
         if not ok1:
             no_working_compiler_found()
         else:
             sys.stderr.write("Note: will not use '__thread' in the C code\n")
             _safe_to_ignore()

 def ask_supports_sync_synchronize():
     if sys.platform == 'win32' or no_compiler_found:
         return
     config = get_config()
     ok = config.try_link('int main(void) { __sync_synchronize(); return 0; }')
     if ok:
         define_macros.append(('HAVE_SYNC_SYNCHRONIZE', None))
     else:
         sys.stderr.write("Note: will not use '__sync_synchronize()'"
                          " in the C code\n")
         _safe_to_ignore()

 def _safe_to_ignore():
     sys.stderr.write("***** The above error message can be safely ignored.\n\n")

 def uses_msvc():
     config = get_config()
     return config.try_compile('#ifndef _MSC_VER\n#error "not MSVC"\n#endif')

 def use_pkg_config():
     if sys.platform == 'darwin' and os.path.exists('/usr/local/bin/brew'):
         use_homebrew_for_libffi()

     _ask_pkg_config(include_dirs,       '--cflags-only-I', '-I', sysroot=True)
     _ask_pkg_config(extra_compile_args, '--cflags-only-other')
     _ask_pkg_config(library_dirs,       '--libs-only-L', '-L', sysroot=True)
     _ask_pkg_config(extra_link_args,    '--libs-only-other')
     _ask_pkg_config(libraries,          '--libs-only-l', '-l')

 def use_homebrew_for_libffi():
     # We can build by setting:
     # PKG_CONFIG_PATH = $(brew --prefix libffi)/lib/pkgconfig
     with os.popen('brew --prefix libffi') as brew_prefix_cmd:
         prefix = brew_prefix_cmd.read().strip()
     pkgconfig = os.path.join(prefix, 'lib', 'pkgconfig')
     os.environ['PKG_CONFIG_PATH'] = (
         os.environ.get('PKG_CONFIG_PATH', '') + ':' + pkgconfig)


 if sys.platform == 'win32' and uses_msvc():
     COMPILE_LIBFFI = 'c/libffi_msvc'    # from the CPython distribution
 else:
     COMPILE_LIBFFI = None

 if COMPILE_LIBFFI:
     assert os.path.isdir(COMPILE_LIBFFI), "directory not found!"
     include_dirs[:] = [COMPILE_LIBFFI]
     libraries[:] = []
     _filenames = [filename.lower() for filename in os.listdir(COMPILE_LIBFFI)]
     _filenames = [filename for filename in _filenames
                            if filename.endswith('.c')]
     if sys.maxsize > 2**32:
         # 64-bit: unlist win32.c, and add instead win64.obj.  If the obj
         # happens to get outdated at some point in the future, you need to
         # rebuild it manually from win64.asm.
         _filenames.remove('win32.c')
         extra_link_args.append(os.path.join(COMPILE_LIBFFI, 'win64.obj'))
     sources.extend(os.path.join(COMPILE_LIBFFI, filename)
                    for filename in _filenames)
 else:
     use_pkg_config()
     ask_supports_thread()
     ask_supports_sync_synchronize()

 if 'freebsd' in sys.platform:
     include_dirs.append('/usr/local/include')
     library_dirs.append('/usr/local/lib')

 if 'darwin' in sys.platform:
     try:
         p = subprocess.Popen(['xcrun', '--show-sdk-path'],
                              stdout=subprocess.PIPE)
     except OSError as e:
         if e.errno not in [errno.ENOENT, errno.EACCES]:
             raise
     else:
         t = p.stdout.read().decode().strip()
         p.stdout.close()
         if p.wait() == 0:
             include_dirs.append(t + '/usr/include/ffi')


 if __name__ == '__main__':
     from setuptools import setup, Distribution, Extension

     class CFFIDistribution(Distribution):
         def has_ext_modules(self):
             # Event if we don't have extension modules (e.g. on PyPy) we want to
             # claim that we do so that wheels get properly tagged as Python
             # specific.  (thanks dstufft!)
             return True

     # On PyPy, cffi is preinstalled and it is not possible, at least for now,
     # to install a different version.  We work around it by making the setup()
     # arguments mostly empty in this case.
     cpython = ('_cffi_backend' not in sys.builtin_module_names)

     setup(
         name='cffi',
         description='Foreign Function Interface for Python calling C code.',
         long_description="""
 CFFI
 ====

 Foreign Function Interface for Python calling C code.
 Please see the `Documentation <http://cffi.readthedocs.org/>`_.

 Contact
 -------

 `Mailing list <https://groups.google.com/forum/#!forum/python-cffi>`_
 """,
         version='1.12.2',
         packages=['cffi'] if cpython else [],
         package_data={'cffi': ['_cffi_include.h', 'parse_c_type.h',
                                '_embedding.h', '_cffi_errors.h']}
                      if cpython else {},
         zip_safe=False,

         url='http://cffi.readthedocs.org',
         author='Armin Rigo, Maciej Fijalkowski',
         author_email='[email protected]',

         license='MIT',

         distclass=CFFIDistribution,
         ext_modules=[Extension(
             name='_cffi_backend',
             include_dirs=include_dirs,
             sources=sources,
             libraries=libraries,
             define_macros=define_macros,
             library_dirs=library_dirs,
             extra_compile_args=extra_compile_args,
             extra_link_args=extra_link_args,
         )] if cpython else [],

         install_requires=[
             'pycparser' if sys.version_info >= (2, 7) else 'pycparser<2.19',
         ] if cpython else [],

         entry_points = {
             "distutils.setup_keywords": [
                 "cffi_modules = cffi.setuptools_ext:cffi_modules",
             ],
         },

         classifiers=[
             'Programming Language :: Python',
             'Programming Language :: Python :: 2',
             'Programming Language :: Python :: 2.6',
             'Programming Language :: Python :: 2.7',
             'Programming Language :: Python :: 3',
             'Programming Language :: Python :: 3.2',
             'Programming Language :: Python :: 3.3',
             'Programming Language :: Python :: 3.4',
             'Programming Language :: Python :: 3.5',
             'Programming Language :: Python :: 3.6',
             'Programming Language :: Python :: Implementation :: CPython',
             'Programming Language :: Python :: Implementation :: PyPy',
         ],
     )
	import sys, os
	import subprocess
	import errno

	# on Windows we give up and always import setuptools early to fix things for us
	if sys.platform == "win32":
	import setuptools


	sources = ['c/_cffi_backend.c']
	libraries = ['ffi']
	include_dirs = ['/usr/include/ffi',
	'/usr/include/libffi'] # may be changed by pkg-config
	define_macros = []
	library_dirs = []
	extra_compile_args = []
	extra_link_args = []


	def _ask_pkg_config(resultlist, option, result_prefix='', sysroot=False):
	pkg_config = os.environ.get('PKG_CONFIG','pkg-config')
	try:
	p = subprocess.Popen([pkg_config, option, 'libffi'],
	stdout=subprocess.PIPE)
	except OSError as e:
	if e.errno not in [errno.ENOENT, errno.EACCES]:
	raise
	else:
	t = p.stdout.read().decode().strip()
	p.stdout.close()
	if p.wait() == 0:
	res = t.split()
	# '-I/usr/...' -> '/usr/...'
	for x in res:
	assert x.startswith(result_prefix)
	res = [x[len(result_prefix):] for x in res]
	#print 'PKG_CONFIG:', option, res
	#
	sysroot = sysroot and os.environ.get('PKG_CONFIG_SYSROOT_DIR', '')
	if sysroot:
	# old versions of pkg-config don't support this env var,
	# so here we emulate its effect if needed
	res = [path if path.startswith(sysroot)
	else sysroot + path
	for path in res]
	#
	resultlist[:] = res

	no_compiler_found = False
	def no_working_compiler_found():
	sys.stderr.write("""
	No working compiler found, or bogus compiler options passed to
	the compiler from Python's standard "distutils" module. See
	the error messages above. Likely, the problem is not related
	to CFFI but generic to the setup.py of any Python package that
	tries to compile C code. (Hints: on OS/X 10.8, for errors about
	-mno-fused-madd see http://stackoverflow.com/questions/22313407/
	Otherwise, see https://wiki.python.org/moin/CompLangPython or
	the IRC channel #python on irc.freenode.net.)

	Trying to continue anyway. If you are trying to install CFFI from
	a build done in a different context, you can ignore this warning.
	\n""")
	global no_compiler_found
	no_compiler_found = True

	def get_config():
	from distutils.core import Distribution
	from distutils.sysconfig import get_config_vars
	get_config_vars() # workaround for a bug of distutils, e.g. on OS/X
	config = Distribution().get_command_obj('config')
	return config

	def ask_supports_thread():
	config = get_config()
	ok = (sys.platform != 'win32' and
	config.try_compile('__thread int some_threadlocal_variable_42;'))
	if ok:
	define_macros.append(('USE__THREAD', None))
	else:
	ok1 = config.try_compile('int some_regular_variable_42;')
	if not ok1:
	no_working_compiler_found()
	else:
	sys.stderr.write("Note: will not use '__thread' in the C code\n")
	_safe_to_ignore()

	def ask_supports_sync_synchronize():
	if sys.platform == 'win32' or no_compiler_found:
	return
	config = get_config()
	ok = config.try_link('int main(void) { __sync_synchronize(); return 0; }')
	if ok:
	define_macros.append(('HAVE_SYNC_SYNCHRONIZE', None))
	else:
	sys.stderr.write("Note: will not use '__sync_synchronize()'"
	" in the C code\n")
	_safe_to_ignore()

	def _safe_to_ignore():
	sys.stderr.write("***** The above error message can be safely ignored.\n\n")

	def uses_msvc():
	config = get_config()
	return config.try_compile('#ifndef _MSC_VER\n#error "not MSVC"\n#endif')

	def use_pkg_config():
	if sys.platform == 'darwin' and os.path.exists('/usr/local/bin/brew'):
	use_homebrew_for_libffi()

	_ask_pkg_config(include_dirs, '--cflags-only-I', '-I', sysroot=True)
	_ask_pkg_config(extra_compile_args, '--cflags-only-other')
	_ask_pkg_config(library_dirs, '--libs-only-L', '-L', sysroot=True)
	_ask_pkg_config(extra_link_args, '--libs-only-other')
	_ask_pkg_config(libraries, '--libs-only-l', '-l')

	def use_homebrew_for_libffi():
	# We can build by setting:
	# PKG_CONFIG_PATH = $(brew --prefix libffi)/lib/pkgconfig
	with os.popen('brew --prefix libffi') as brew_prefix_cmd:
	prefix = brew_prefix_cmd.read().strip()
	pkgconfig = os.path.join(prefix, 'lib', 'pkgconfig')
	os.environ['PKG_CONFIG_PATH'] = (
	os.environ.get('PKG_CONFIG_PATH', '') + ':' + pkgconfig)


	if sys.platform == 'win32' and uses_msvc():
	COMPILE_LIBFFI = 'c/libffi_msvc' # from the CPython distribution
	else:
	COMPILE_LIBFFI = None

	if COMPILE_LIBFFI:
	assert os.path.isdir(COMPILE_LIBFFI), "directory not found!"
	include_dirs[:] = [COMPILE_LIBFFI]
	libraries[:] = []
	_filenames = [filename.lower() for filename in os.listdir(COMPILE_LIBFFI)]
	_filenames = [filename for filename in _filenames
	if filename.endswith('.c')]
	if sys.maxsize > 2**32:
	# 64-bit: unlist win32.c, and add instead win64.obj. If the obj
	# happens to get outdated at some point in the future, you need to
	# rebuild it manually from win64.asm.
	_filenames.remove('win32.c')
	extra_link_args.append(os.path.join(COMPILE_LIBFFI, 'win64.obj'))
	sources.extend(os.path.join(COMPILE_LIBFFI, filename)
	for filename in _filenames)
	else:
	use_pkg_config()
	ask_supports_thread()
	ask_supports_sync_synchronize()

	if 'freebsd' in sys.platform:
	include_dirs.append('/usr/local/include')
	library_dirs.append('/usr/local/lib')

	if 'darwin' in sys.platform:
	try:
	p = subprocess.Popen(['xcrun', '--show-sdk-path'],
	stdout=subprocess.PIPE)
	except OSError as e:
	if e.errno not in [errno.ENOENT, errno.EACCES]:
	raise
	else:
	t = p.stdout.read().decode().strip()
	p.stdout.close()
	if p.wait() == 0:
	include_dirs.append(t + '/usr/include/ffi')



	if __name__ == '__main__':
	from setuptools import setup, Distribution, Extension

	class CFFIDistribution(Distribution):
	def has_ext_modules(self):
	# Event if we don't have extension modules (e.g. on PyPy) we want to
	# claim that we do so that wheels get properly tagged as Python
	# specific. (thanks dstufft!)
	return True

	# On PyPy, cffi is preinstalled and it is not possible, at least for now,
	# to install a different version. We work around it by making the setup()
	# arguments mostly empty in this case.
	cpython = ('_cffi_backend' not in sys.builtin_module_names)

	setup(
	name='cffi',
	description='Foreign Function Interface for Python calling C code.',
	long_description="""
	CFFI
	====

	Foreign Function Interface for Python calling C code.
	Please see the `Documentation <http://cffi.readthedocs.org/>`_.

	Contact
	-------

	`Mailing list <https://groups.google.com/forum/#!forum/python-cffi>`_
	""",
	version='1.12.2',
	packages=['cffi'] if cpython else [],
	package_data={'cffi': ['_cffi_include.h', 'parse_c_type.h',
	'_embedding.h', '_cffi_errors.h']}
	if cpython else {},
	zip_safe=False,

	url='http://cffi.readthedocs.org',
	author='Armin Rigo, Maciej Fijalkowski',
	author_email='[email protected]',

	license='MIT',

	distclass=CFFIDistribution,
	ext_modules=[Extension(
	name='_cffi_backend',
	include_dirs=include_dirs,
	sources=sources,
	libraries=libraries,
	define_macros=define_macros,
	library_dirs=library_dirs,
	extra_compile_args=extra_compile_args,
	extra_link_args=extra_link_args,
	)] if cpython else [],

	install_requires=[
	'pycparser' if sys.version_info >= (2, 7) else 'pycparser<2.19',
	] if cpython else [],

	entry_points = {
	"distutils.setup_keywords": [
	"cffi_modules = cffi.setuptools_ext:cffi_modules",
	],
	},

	classifiers=[
	'Programming Language :: Python',
	'Programming Language :: Python :: 2',
	'Programming Language :: Python :: 2.6',
	'Programming Language :: Python :: 2.7',
	'Programming Language :: Python :: 3',
	'Programming Language :: Python :: 3.2',
	'Programming Language :: Python :: 3.3',
	'Programming Language :: Python :: 3.4',
	'Programming Language :: Python :: 3.5',
	'Programming Language :: Python :: 3.6',
	'Programming Language :: Python :: Implementation :: CPython',
	'Programming Language :: Python :: Implementation :: PyPy',
	],
	)