diff options
Diffstat (limited to 'Lib/setuptools/command/build_ext.py')
| -rw-r--r-- | Lib/setuptools/command/build_ext.py | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/Lib/setuptools/command/build_ext.py b/Lib/setuptools/command/build_ext.py new file mode 100644 index 0000000..a4b9047 --- /dev/null +++ b/Lib/setuptools/command/build_ext.py @@ -0,0 +1,287 @@ +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, get_config_var +get_config_var("LDSHARED") # make sure _config_vars is initialized +from distutils.sysconfig import _config_vars +from distutils import log +from distutils.errors import * + +have_rtld = False +use_stubs = False +libtype = 'shared' + +if sys.platform == "darwin": + use_stubs = True +elif os.name != 'nt': + try: + from dl import RTLD_NOW + have_rtld = True + use_stubs = True + except ImportError: + pass + +def if_dl(s): + if have_rtld: + return s + return '' + + + + + + +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: + 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 ext._needs_stub: + self.write_stub(package_dir or os.curdir, ext, True) + + + 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) + ext = self.ext_map[fullname] + if isinstance(ext,Library): + fn, ext = os.path.splitext(filename) + return self.shlib_compiler.library_filename(fn,libtype) + elif use_stubs and ext._links_to_dynamic: + d,fn = os.path.split(filename) + return os.path.join(d,'dl-'+fn) + else: + return filename + + def initialize_options(self): + _build_ext.initialize_options(self) + self.shlib_compiler = None + self.shlibs = [] + self.ext_map = {} + + def finalize_options(self): + _build_ext.finalize_options(self) + self.extensions = self.extensions or [] + self.check_extensions_list(self.extensions) + self.shlibs = [ext for ext in self.extensions + if isinstance(ext,Library)] + if self.shlibs: + self.setup_shlib_compiler() + for ext in self.extensions: + fullname = ext._full_name = self.get_ext_fullname(ext.name) + self.ext_map[fullname] = ext + ltd = ext._links_to_dynamic = \ + self.shlibs and self.links_to_dynamic(ext) or False + ext._needs_stub = ltd and use_stubs and not isinstance(ext,Library) + filename = ext._file_name = self.get_ext_filename(fullname) + libdir = os.path.dirname(os.path.join(self.build_lib,filename)) + if ltd and libdir not in ext.library_dirs: + ext.library_dirs.append(libdir) + if ltd and use_stubs and os.curdir not in ext.runtime_library_dirs: + ext.runtime_library_dirs.append(os.curdir) + + + + def setup_shlib_compiler(self): + compiler = self.shlib_compiler = new_compiler( + compiler=self.compiler, dry_run=self.dry_run, force=self.force + ) + if sys.platform == "darwin": + tmp = _config_vars.copy() + try: + # XXX Help! I don't have any idea whether these are right... + _config_vars['LDSHARED'] = "gcc -Wl,-x -dynamiclib -undefined dynamic_lookup" + _config_vars['CCSHARED'] = " -dynamiclib" + _config_vars['SO'] = ".dylib" + customize_compiler(compiler) + finally: + _config_vars.clear() + _config_vars.update(tmp) + else: + customize_compiler(compiler) + + 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 + try: + if isinstance(ext,Library): + self.compiler = self.shlib_compiler + _build_ext.build_extension(self,ext) + if ext._needs_stub: + self.write_stub( + self.get_finalized_command('build_py').build_lib, ext + ) + finally: + self.compiler = _compiler + + 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([lib._full_name for lib in self.shlibs]) + pkg = '.'.join(ext._full_name.split('.')[:-1]+['']) + for libname in ext.libraries: + if pkg+libname in libnames: return True + return False + + def get_outputs(self): + outputs = _build_ext.get_outputs(self) + optimize = self.get_finalized_command('build_py').optimize + for ext in self.extensions: + if ext._needs_stub: + base = os.path.join(self.build_lib, *ext._full_name.split('.')) + outputs.append(base+'.py') + outputs.append(base+'.pyc') + if optimize: + outputs.append(base+'.pyo') + return outputs + + def write_stub(self, output_dir, ext, compile=False): + log.info("writing stub loader for %s to %s",ext._full_name, output_dir) + stub_file = os.path.join(output_dir, *ext._full_name.split('.'))+'.py' + if compile and os.path.exists(stub_file): + raise DistutilsError(stub_file+" already exists! Please delete.") + if not self.dry_run: + f = open(stub_file,'w') + f.write('\n'.join([ + "def __bootstrap__():", + " global __bootstrap__, __file__, __loader__", + " import sys, os, pkg_resources, imp"+if_dl(", dl"), + " __file__ = pkg_resources.resource_filename(__name__,%r)" + % os.path.basename(ext._file_name), + " del __bootstrap__", + " if '__loader__' in globals():", + " del __loader__", + if_dl(" old_flags = sys.getdlopenflags()"), + " old_dir = os.getcwd()", + " try:", + " os.chdir(os.path.dirname(__file__))", + if_dl(" sys.setdlopenflags(dl.RTLD_NOW)"), + " imp.load_dynamic(__name__,__file__)", + " finally:", + if_dl(" sys.setdlopenflags(old_flags)"), + " os.chdir(old_dir)", + "__bootstrap__()", + "" # terminal \n + ])) + f.close() + if compile: + from distutils.util import byte_compile + byte_compile([stub_file], optimize=0, + force=True, dry_run=self.dry_run) + optimize = self.get_finalized_command('install_lib').optimize + if optimize > 0: + byte_compile([stub_file], optimize=optimize, + force=True, dry_run=self.dry_run) + if os.path.exists(stub_file) and not self.dry_run: + os.unlink(stub_file) + + +if use_stubs 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 + ) + + |