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from distutils.command.build_ext import build_ext as _du_build_ext
try:
# Attempt to use Pyrex for building extensions, if available
from Pyrex.Distutils.build_ext import build_ext as _build_ext
except ImportError:
_build_ext = _du_build_ext
import os, sys
from distutils.file_util import copy_file
from setuptools.extension import Library
from distutils.ccompiler import new_compiler
from distutils.sysconfig import customize_compiler
have_rtld = False
libtype = 'shared'
if os.name != 'nt':
try:
from dl import RTLD_NOW
# XXX not ready for primetime yet: have_rtld = True
except ImportError:
pass
class build_ext(_build_ext):
def run(self):
"""Build extensions in build directory, then copy if --inplace"""
old_inplace, self.inplace = self.inplace, 0
_build_ext.run(self)
self.inplace = old_inplace
if old_inplace:
self.copy_extensions_to_source()
def copy_extensions_to_source(self):
build_py = self.get_finalized_command('build_py')
for ext in self.extensions or ():
fullname = self.get_ext_fullname(ext.name)
filename = self.get_ext_filename(fullname)
modpath = fullname.split('.')
package = '.'.join(modpath[:-1])
package_dir = build_py.get_package_dir(package)
dest_filename = os.path.join(package_dir,os.path.basename(filename))
src_filename = os.path.join(self.build_lib,filename)
# Always copy, even if source is older than destination, to ensure
# that the right extensions for the current Python/platform are
# used.
copy_file(
src_filename, dest_filename, verbose=self.verbose,
dry_run=self.dry_run
)
if _build_ext is not _du_build_ext:
# Workaround for problems using some Pyrex versions w/SWIG and/or 2.4
def swig_sources(self, sources, *otherargs):
# first do any Pyrex processing
sources = _build_ext.swig_sources(self, sources) or sources
# Then do any actual SWIG stuff on the remainder
return _du_build_ext.swig_sources(self, sources, *otherargs)
def get_ext_filename(self, fullname):
filename = _build_ext.get_ext_filename(self,fullname)
for ext in self.extensions:
if self.get_ext_fullname(ext.name)==fullname:
if isinstance(ext,Library):
fn, ext = os.path.splitext(filename)
return self.shlib_compiler.library_filename(fn,libtype)
elif have_rtld and self.links_to_dynamic(ext):
d,fn = os.path.split(filename)
return os.path.join(d,'dl-'+fn)
else:
return filename
raise AssertionError(
"Filename requested for nonexistent extension", fullname
)
def initialize_options(self):
_build_ext.initialize_options(self)
self.shlib_compiler = None
self.shlibs = []
def finalize_options(self):
_build_ext.finalize_options(self)
self.shlibs = [ext for ext in self.extensions or ()
if isinstance(ext,Library)]
if self.shlibs:
self.setup_shlib_compiler()
def setup_shlib_compiler(self):
compiler = self.shlib_compiler = new_compiler(
compiler=self.compiler, dry_run=self.dry_run, force=self.force
)
customize_compiler(compiler)
if sys.platform == "darwin":
# XXX need to fix up compiler_so:ccshared + linker_so:ldshared too
compiler.shared_lib_extension = ".dylib"
if self.include_dirs is not None:
compiler.set_include_dirs(self.include_dirs)
if self.define is not None:
# 'define' option is a list of (name,value) tuples
for (name,value) in self.define:
compiler.define_macro(name, value)
if self.undef is not None:
for macro in self.undef:
compiler.undefine_macro(macro)
if self.libraries is not None:
compiler.set_libraries(self.libraries)
if self.library_dirs is not None:
compiler.set_library_dirs(self.library_dirs)
if self.rpath is not None:
compiler.set_runtime_library_dirs(self.rpath)
if self.link_objects is not None:
compiler.set_link_objects(self.link_objects)
# hack so distutils' build_extension() builds a library instead
compiler.link_shared_object = link_shared_object.__get__(compiler)
def get_export_symbols(self, ext):
if isinstance(ext,Library):
return ext.export_symbols
return _build_ext.get_export_symbols(self,ext)
def build_extension(self, ext):
_compiler = self.compiler
_rpath = ext.runtime_library_dirs
_ldirs = ext.library_dirs
try:
if isinstance(ext,Library):
self.compiler = self.shlib_compiler
if self.links_to_dynamic(ext):
if have_rtld: ext.runtime_library_dirs = _rpath + [os.curdir]
ext.library_dirs = _ldirs + [
os.path.dirname(
os.path.join(self.build_lib,
self.get_ext_filename(
self.get_ext_fullname(ext.name)
)
)
)
]
# XXX if not lib, write .py stub
_build_ext.build_extension(self,ext)
finally:
self.compiler = _compiler
ext.runtime_library_dirs = _rpath
ext.library_dirs = _ldirs
def links_to_dynamic(self, ext):
"""Return true if 'ext' links to a dynamic lib in the same package"""
# XXX this should check to ensure the lib is actually being built
# XXX as dynamic, and not just using a locally-found version or a
# XXX static-compiled version
libnames = dict.fromkeys(
[self.get_ext_fullname(lib.name) for lib in self.shlibs]
)
pkg = '.'.join(self.get_ext_fullname(ext.name).split('.')[:-1])
if pkg: pkg+='.'
for libname in ext.libraries:
if pkg+libname in libnames: return True
return False
if have_rtld or os.name=='nt':
# Build shared libraries
#
def link_shared_object(self, objects, output_libname, output_dir=None,
libraries=None, library_dirs=None, runtime_library_dirs=None,
export_symbols=None, debug=0, extra_preargs=None,
extra_postargs=None, build_temp=None, target_lang=None
): self.link(
self.SHARED_LIBRARY, objects, output_libname,
output_dir, libraries, library_dirs, runtime_library_dirs,
export_symbols, debug, extra_preargs, extra_postargs,
build_temp, target_lang
)
else:
# Build static libraries everywhere else
libtype = 'static'
def link_shared_object(self, objects, output_libname, output_dir=None,
libraries=None, library_dirs=None, runtime_library_dirs=None,
export_symbols=None, debug=0, extra_preargs=None,
extra_postargs=None, build_temp=None, target_lang=None
):
# XXX we need to either disallow these attrs on Library instances,
# or warn/abort here if set, or something...
#libraries=None, library_dirs=None, runtime_library_dirs=None,
#export_symbols=None, extra_preargs=None, extra_postargs=None,
#build_temp=None
assert output_dir is None # distutils build_ext doesn't pass this
output_dir,filename = os.path.split(output_libname)
basename, ext = os.path.splitext(filename)
if self.library_filename("x").startswith('lib'):
# strip 'lib' prefix; this is kludgy if some platform uses
# a different prefix
basename = basename[3:]
self.create_static_lib(
objects, basename, output_dir, debug, target_lang
)
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