1"""distutils.command.build_ext 2 3Implements the Distutils 'build_ext' command, for building extension 4modules (currently limited to C extensions, should accommodate C++ 5extensions ASAP).""" 6 7import contextlib 8import os 9import re 10import sys 11from distutils.core import Command 12from distutils.errors import * 13from distutils.sysconfig import customize_compiler, get_python_version 14from distutils.sysconfig import get_config_h_filename 15from distutils.dep_util import newer_group 16from distutils.extension import Extension 17from distutils.util import get_platform 18from distutils import log 19 20from site import USER_BASE 21 22# An extension name is just a dot-separated list of Python NAMEs (ie. 23# the same as a fully-qualified module name). 24extension_name_re = re.compile \ 25 (r'^[a-zA-Z_][a-zA-Z_0-9]*(\.[a-zA-Z_][a-zA-Z_0-9]*)*$') 26 27 28def show_compilers (): 29 from distutils.ccompiler import show_compilers 30 show_compilers() 31 32 33class build_ext(Command): 34 35 description = "build C/C++ extensions (compile/link to build directory)" 36 37 # XXX thoughts on how to deal with complex command-line options like 38 # these, i.e. how to make it so fancy_getopt can suck them off the 39 # command line and make it look like setup.py defined the appropriate 40 # lists of tuples of what-have-you. 41 # - each command needs a callback to process its command-line options 42 # - Command.__init__() needs access to its share of the whole 43 # command line (must ultimately come from 44 # Distribution.parse_command_line()) 45 # - it then calls the current command class' option-parsing 46 # callback to deal with weird options like -D, which have to 47 # parse the option text and churn out some custom data 48 # structure 49 # - that data structure (in this case, a list of 2-tuples) 50 # will then be present in the command object by the time 51 # we get to finalize_options() (i.e. the constructor 52 # takes care of both command-line and client options 53 # in between initialize_options() and finalize_options()) 54 55 sep_by = " (separated by '%s')" % os.pathsep 56 user_options = [ 57 ('build-lib=', 'b', 58 "directory for compiled extension modules"), 59 ('build-temp=', 't', 60 "directory for temporary files (build by-products)"), 61 ('plat-name=', 'p', 62 "platform name to cross-compile for, if supported " 63 "(default: %s)" % get_platform()), 64 ('inplace', 'i', 65 "ignore build-lib and put compiled extensions into the source " + 66 "directory alongside your pure Python modules"), 67 ('include-dirs=', 'I', 68 "list of directories to search for header files" + sep_by), 69 ('define=', 'D', 70 "C preprocessor macros to define"), 71 ('undef=', 'U', 72 "C preprocessor macros to undefine"), 73 ('libraries=', 'l', 74 "external C libraries to link with"), 75 ('library-dirs=', 'L', 76 "directories to search for external C libraries" + sep_by), 77 ('rpath=', 'R', 78 "directories to search for shared C libraries at runtime"), 79 ('link-objects=', 'O', 80 "extra explicit link objects to include in the link"), 81 ('debug', 'g', 82 "compile/link with debugging information"), 83 ('force', 'f', 84 "forcibly build everything (ignore file timestamps)"), 85 ('compiler=', 'c', 86 "specify the compiler type"), 87 ('parallel=', 'j', 88 "number of parallel build jobs"), 89 ('swig-cpp', None, 90 "make SWIG create C++ files (default is C)"), 91 ('swig-opts=', None, 92 "list of SWIG command line options"), 93 ('swig=', None, 94 "path to the SWIG executable"), 95 ('user', None, 96 "add user include, library and rpath") 97 ] 98 99 boolean_options = ['inplace', 'debug', 'force', 'swig-cpp', 'user'] 100 101 help_options = [ 102 ('help-compiler', None, 103 "list available compilers", show_compilers), 104 ] 105 106 def initialize_options(self): 107 self.extensions = None 108 self.build_lib = None 109 self.plat_name = None 110 self.build_temp = None 111 self.inplace = 0 112 self.package = None 113 114 self.include_dirs = None 115 self.define = None 116 self.undef = None 117 self.libraries = None 118 self.library_dirs = None 119 self.rpath = None 120 self.link_objects = None 121 self.debug = None 122 self.force = None 123 self.compiler = None 124 self.swig = None 125 self.swig_cpp = None 126 self.swig_opts = None 127 self.user = None 128 self.parallel = None 129 130 def finalize_options(self): 131 from distutils import sysconfig 132 133 self.set_undefined_options('build', 134 ('build_lib', 'build_lib'), 135 ('build_temp', 'build_temp'), 136 ('compiler', 'compiler'), 137 ('debug', 'debug'), 138 ('force', 'force'), 139 ('parallel', 'parallel'), 140 ('plat_name', 'plat_name'), 141 ) 142 143 if self.package is None: 144 self.package = self.distribution.ext_package 145 146 self.extensions = self.distribution.ext_modules 147 148 # Make sure Python's include directories (for Python.h, pyconfig.h, 149 # etc.) are in the include search path. 150 py_include = sysconfig.get_python_inc() 151 plat_py_include = sysconfig.get_python_inc(plat_specific=1) 152 if self.include_dirs is None: 153 self.include_dirs = self.distribution.include_dirs or [] 154 if isinstance(self.include_dirs, str): 155 self.include_dirs = self.include_dirs.split(os.pathsep) 156 157 # If in a virtualenv, add its include directory 158 # Issue 16116 159 if sys.exec_prefix != sys.base_exec_prefix: 160 self.include_dirs.append(os.path.join(sys.exec_prefix, 'include')) 161 162 # Put the Python "system" include dir at the end, so that 163 # any local include dirs take precedence. 164 self.include_dirs.append(py_include) 165 if plat_py_include != py_include: 166 self.include_dirs.append(plat_py_include) 167 168 self.ensure_string_list('libraries') 169 self.ensure_string_list('link_objects') 170 171 # Life is easier if we're not forever checking for None, so 172 # simplify these options to empty lists if unset 173 if self.libraries is None: 174 self.libraries = [] 175 if self.library_dirs is None: 176 self.library_dirs = [] 177 elif isinstance(self.library_dirs, str): 178 self.library_dirs = self.library_dirs.split(os.pathsep) 179 180 if self.rpath is None: 181 self.rpath = [] 182 elif isinstance(self.rpath, str): 183 self.rpath = self.rpath.split(os.pathsep) 184 185 # for extensions under windows use different directories 186 # for Release and Debug builds. 187 # also Python's library directory must be appended to library_dirs 188 if os.name == 'nt': 189 # the 'libs' directory is for binary installs - we assume that 190 # must be the *native* platform. But we don't really support 191 # cross-compiling via a binary install anyway, so we let it go. 192 self.library_dirs.append(os.path.join(sys.exec_prefix, 'libs')) 193 if sys.base_exec_prefix != sys.prefix: # Issue 16116 194 self.library_dirs.append(os.path.join(sys.base_exec_prefix, 'libs')) 195 if self.debug: 196 self.build_temp = os.path.join(self.build_temp, "Debug") 197 else: 198 self.build_temp = os.path.join(self.build_temp, "Release") 199 200 # Append the source distribution include and library directories, 201 # this allows distutils on windows to work in the source tree 202 self.include_dirs.append(os.path.dirname(get_config_h_filename())) 203 _sys_home = getattr(sys, '_home', None) 204 if _sys_home: 205 self.library_dirs.append(_sys_home) 206 207 # Use the .lib files for the correct architecture 208 if self.plat_name == 'win32': 209 suffix = 'win32' 210 else: 211 # win-amd64 or win-ia64 212 suffix = self.plat_name[4:] 213 new_lib = os.path.join(sys.exec_prefix, 'PCbuild') 214 if suffix: 215 new_lib = os.path.join(new_lib, suffix) 216 self.library_dirs.append(new_lib) 217 218 # for extensions under Cygwin and AtheOS Python's library directory must be 219 # appended to library_dirs 220 if sys.platform[:6] == 'cygwin' or sys.platform[:6] == 'atheos': 221 if sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")): 222 # building third party extensions 223 self.library_dirs.append(os.path.join(sys.prefix, "lib", 224 "python" + get_python_version(), 225 "config")) 226 else: 227 # building python standard extensions 228 self.library_dirs.append('.') 229 230 # For building extensions with a shared Python library, 231 # Python's library directory must be appended to library_dirs 232 # See Issues: #1600860, #4366 233 if (sysconfig.get_config_var('Py_ENABLE_SHARED')): 234 if not sysconfig.python_build: 235 # building third party extensions 236 self.library_dirs.append(sysconfig.get_config_var('LIBDIR')) 237 else: 238 # building python standard extensions 239 self.library_dirs.append('.') 240 241 # The argument parsing will result in self.define being a string, but 242 # it has to be a list of 2-tuples. All the preprocessor symbols 243 # specified by the 'define' option will be set to '1'. Multiple 244 # symbols can be separated with commas. 245 246 if self.define: 247 defines = self.define.split(',') 248 self.define = [(symbol, '1') for symbol in defines] 249 250 # The option for macros to undefine is also a string from the 251 # option parsing, but has to be a list. Multiple symbols can also 252 # be separated with commas here. 253 if self.undef: 254 self.undef = self.undef.split(',') 255 256 if self.swig_opts is None: 257 self.swig_opts = [] 258 else: 259 self.swig_opts = self.swig_opts.split(' ') 260 261 # Finally add the user include and library directories if requested 262 if self.user: 263 user_include = os.path.join(USER_BASE, "include") 264 user_lib = os.path.join(USER_BASE, "lib") 265 if os.path.isdir(user_include): 266 self.include_dirs.append(user_include) 267 if os.path.isdir(user_lib): 268 self.library_dirs.append(user_lib) 269 self.rpath.append(user_lib) 270 271 if isinstance(self.parallel, str): 272 try: 273 self.parallel = int(self.parallel) 274 except ValueError: 275 raise DistutilsOptionError("parallel should be an integer") 276 277 def run(self): 278 from distutils.ccompiler import new_compiler 279 280 # 'self.extensions', as supplied by setup.py, is a list of 281 # Extension instances. See the documentation for Extension (in 282 # distutils.extension) for details. 283 # 284 # For backwards compatibility with Distutils 0.8.2 and earlier, we 285 # also allow the 'extensions' list to be a list of tuples: 286 # (ext_name, build_info) 287 # where build_info is a dictionary containing everything that 288 # Extension instances do except the name, with a few things being 289 # differently named. We convert these 2-tuples to Extension 290 # instances as needed. 291 292 if not self.extensions: 293 return 294 295 # If we were asked to build any C/C++ libraries, make sure that the 296 # directory where we put them is in the library search path for 297 # linking extensions. 298 if self.distribution.has_c_libraries(): 299 build_clib = self.get_finalized_command('build_clib') 300 self.libraries.extend(build_clib.get_library_names() or []) 301 self.library_dirs.append(build_clib.build_clib) 302 303 # Setup the CCompiler object that we'll use to do all the 304 # compiling and linking 305 self.compiler = new_compiler(compiler=self.compiler, 306 verbose=self.verbose, 307 dry_run=self.dry_run, 308 force=self.force) 309 customize_compiler(self.compiler) 310 # If we are cross-compiling, init the compiler now (if we are not 311 # cross-compiling, init would not hurt, but people may rely on 312 # late initialization of compiler even if they shouldn't...) 313 if os.name == 'nt' and self.plat_name != get_platform(): 314 self.compiler.initialize(self.plat_name) 315 316 # And make sure that any compile/link-related options (which might 317 # come from the command-line or from the setup script) are set in 318 # that CCompiler object -- that way, they automatically apply to 319 # all compiling and linking done here. 320 if self.include_dirs is not None: 321 self.compiler.set_include_dirs(self.include_dirs) 322 if self.define is not None: 323 # 'define' option is a list of (name,value) tuples 324 for (name, value) in self.define: 325 self.compiler.define_macro(name, value) 326 if self.undef is not None: 327 for macro in self.undef: 328 self.compiler.undefine_macro(macro) 329 if self.libraries is not None: 330 self.compiler.set_libraries(self.libraries) 331 if self.library_dirs is not None: 332 self.compiler.set_library_dirs(self.library_dirs) 333 if self.rpath is not None: 334 self.compiler.set_runtime_library_dirs(self.rpath) 335 if self.link_objects is not None: 336 self.compiler.set_link_objects(self.link_objects) 337 338 # Now actually compile and link everything. 339 self.build_extensions() 340 341 def check_extensions_list(self, extensions): 342 """Ensure that the list of extensions (presumably provided as a 343 command option 'extensions') is valid, i.e. it is a list of 344 Extension objects. We also support the old-style list of 2-tuples, 345 where the tuples are (ext_name, build_info), which are converted to 346 Extension instances here. 347 348 Raise DistutilsSetupError if the structure is invalid anywhere; 349 just returns otherwise. 350 """ 351 if not isinstance(extensions, list): 352 raise DistutilsSetupError( 353 "'ext_modules' option must be a list of Extension instances") 354 355 for i, ext in enumerate(extensions): 356 if isinstance(ext, Extension): 357 continue # OK! (assume type-checking done 358 # by Extension constructor) 359 360 if not isinstance(ext, tuple) or len(ext) != 2: 361 raise DistutilsSetupError( 362 "each element of 'ext_modules' option must be an " 363 "Extension instance or 2-tuple") 364 365 ext_name, build_info = ext 366 367 log.warn("old-style (ext_name, build_info) tuple found in " 368 "ext_modules for extension '%s'" 369 "-- please convert to Extension instance", ext_name) 370 371 if not (isinstance(ext_name, str) and 372 extension_name_re.match(ext_name)): 373 raise DistutilsSetupError( 374 "first element of each tuple in 'ext_modules' " 375 "must be the extension name (a string)") 376 377 if not isinstance(build_info, dict): 378 raise DistutilsSetupError( 379 "second element of each tuple in 'ext_modules' " 380 "must be a dictionary (build info)") 381 382 # OK, the (ext_name, build_info) dict is type-safe: convert it 383 # to an Extension instance. 384 ext = Extension(ext_name, build_info['sources']) 385 386 # Easy stuff: one-to-one mapping from dict elements to 387 # instance attributes. 388 for key in ('include_dirs', 'library_dirs', 'libraries', 389 'extra_objects', 'extra_compile_args', 390 'extra_link_args'): 391 val = build_info.get(key) 392 if val is not None: 393 setattr(ext, key, val) 394 395 # Medium-easy stuff: same syntax/semantics, different names. 396 ext.runtime_library_dirs = build_info.get('rpath') 397 if 'def_file' in build_info: 398 log.warn("'def_file' element of build info dict " 399 "no longer supported") 400 401 # Non-trivial stuff: 'macros' split into 'define_macros' 402 # and 'undef_macros'. 403 macros = build_info.get('macros') 404 if macros: 405 ext.define_macros = [] 406 ext.undef_macros = [] 407 for macro in macros: 408 if not (isinstance(macro, tuple) and len(macro) in (1, 2)): 409 raise DistutilsSetupError( 410 "'macros' element of build info dict " 411 "must be 1- or 2-tuple") 412 if len(macro) == 1: 413 ext.undef_macros.append(macro[0]) 414 elif len(macro) == 2: 415 ext.define_macros.append(macro) 416 417 extensions[i] = ext 418 419 def get_source_files(self): 420 self.check_extensions_list(self.extensions) 421 filenames = [] 422 423 # Wouldn't it be neat if we knew the names of header files too... 424 for ext in self.extensions: 425 filenames.extend(ext.sources) 426 return filenames 427 428 def get_outputs(self): 429 # Sanity check the 'extensions' list -- can't assume this is being 430 # done in the same run as a 'build_extensions()' call (in fact, we 431 # can probably assume that it *isn't*!). 432 self.check_extensions_list(self.extensions) 433 434 # And build the list of output (built) filenames. Note that this 435 # ignores the 'inplace' flag, and assumes everything goes in the 436 # "build" tree. 437 outputs = [] 438 for ext in self.extensions: 439 outputs.append(self.get_ext_fullpath(ext.name)) 440 return outputs 441 442 def build_extensions(self): 443 # First, sanity-check the 'extensions' list 444 self.check_extensions_list(self.extensions) 445 if self.parallel: 446 self._build_extensions_parallel() 447 else: 448 self._build_extensions_serial() 449 450 def _build_extensions_parallel(self): 451 workers = self.parallel 452 if self.parallel is True: 453 workers = os.cpu_count() # may return None 454 try: 455 from concurrent.futures import ThreadPoolExecutor 456 except ImportError: 457 workers = None 458 459 if workers is None: 460 self._build_extensions_serial() 461 return 462 463 with ThreadPoolExecutor(max_workers=workers) as executor: 464 futures = [executor.submit(self.build_extension, ext) 465 for ext in self.extensions] 466 for ext, fut in zip(self.extensions, futures): 467 with self._filter_build_errors(ext): 468 fut.result() 469 470 def _build_extensions_serial(self): 471 for ext in self.extensions: 472 with self._filter_build_errors(ext): 473 self.build_extension(ext) 474 475 @contextlib.contextmanager 476 def _filter_build_errors(self, ext): 477 try: 478 yield 479 except (CCompilerError, DistutilsError, CompileError) as e: 480 if not ext.optional: 481 raise 482 self.warn('building extension "%s" failed: %s' % 483 (ext.name, e)) 484 485 def build_extension(self, ext): 486 sources = ext.sources 487 if sources is None or not isinstance(sources, (list, tuple)): 488 raise DistutilsSetupError( 489 "in 'ext_modules' option (extension '%s'), " 490 "'sources' must be present and must be " 491 "a list of source filenames" % ext.name) 492 sources = list(sources) 493 494 ext_path = self.get_ext_fullpath(ext.name) 495 depends = sources + ext.depends 496 if not (self.force or newer_group(depends, ext_path, 'newer')): 497 log.debug("skipping '%s' extension (up-to-date)", ext.name) 498 return 499 else: 500 log.info("building '%s' extension", ext.name) 501 502 # First, scan the sources for SWIG definition files (.i), run 503 # SWIG on 'em to create .c files, and modify the sources list 504 # accordingly. 505 sources = self.swig_sources(sources, ext) 506 507 # Next, compile the source code to object files. 508 509 # XXX not honouring 'define_macros' or 'undef_macros' -- the 510 # CCompiler API needs to change to accommodate this, and I 511 # want to do one thing at a time! 512 513 # Two possible sources for extra compiler arguments: 514 # - 'extra_compile_args' in Extension object 515 # - CFLAGS environment variable (not particularly 516 # elegant, but people seem to expect it and I 517 # guess it's useful) 518 # The environment variable should take precedence, and 519 # any sensible compiler will give precedence to later 520 # command line args. Hence we combine them in order: 521 extra_args = ext.extra_compile_args or [] 522 523 macros = ext.define_macros[:] 524 for undef in ext.undef_macros: 525 macros.append((undef,)) 526 527 objects = self.compiler.compile(sources, 528 output_dir=self.build_temp, 529 macros=macros, 530 include_dirs=ext.include_dirs, 531 debug=self.debug, 532 extra_postargs=extra_args, 533 depends=ext.depends) 534 535 # XXX outdated variable, kept here in case third-part code 536 # needs it. 537 self._built_objects = objects[:] 538 539 # Now link the object files together into a "shared object" -- 540 # of course, first we have to figure out all the other things 541 # that go into the mix. 542 if ext.extra_objects: 543 objects.extend(ext.extra_objects) 544 extra_args = ext.extra_link_args or [] 545 546 # Detect target language, if not provided 547 language = ext.language or self.compiler.detect_language(sources) 548 549 self.compiler.link_shared_object( 550 objects, ext_path, 551 libraries=self.get_libraries(ext), 552 library_dirs=ext.library_dirs, 553 runtime_library_dirs=ext.runtime_library_dirs, 554 extra_postargs=extra_args, 555 export_symbols=self.get_export_symbols(ext), 556 debug=self.debug, 557 build_temp=self.build_temp, 558 target_lang=language) 559 560 def swig_sources(self, sources, extension): 561 """Walk the list of source files in 'sources', looking for SWIG 562 interface (.i) files. Run SWIG on all that are found, and 563 return a modified 'sources' list with SWIG source files replaced 564 by the generated C (or C++) files. 565 """ 566 new_sources = [] 567 swig_sources = [] 568 swig_targets = {} 569 570 # XXX this drops generated C/C++ files into the source tree, which 571 # is fine for developers who want to distribute the generated 572 # source -- but there should be an option to put SWIG output in 573 # the temp dir. 574 575 if self.swig_cpp: 576 log.warn("--swig-cpp is deprecated - use --swig-opts=-c++") 577 578 if self.swig_cpp or ('-c++' in self.swig_opts) or \ 579 ('-c++' in extension.swig_opts): 580 target_ext = '.cpp' 581 else: 582 target_ext = '.c' 583 584 for source in sources: 585 (base, ext) = os.path.splitext(source) 586 if ext == ".i": # SWIG interface file 587 new_sources.append(base + '_wrap' + target_ext) 588 swig_sources.append(source) 589 swig_targets[source] = new_sources[-1] 590 else: 591 new_sources.append(source) 592 593 if not swig_sources: 594 return new_sources 595 596 swig = self.swig or self.find_swig() 597 swig_cmd = [swig, "-python"] 598 swig_cmd.extend(self.swig_opts) 599 if self.swig_cpp: 600 swig_cmd.append("-c++") 601 602 # Do not override commandline arguments 603 if not self.swig_opts: 604 for o in extension.swig_opts: 605 swig_cmd.append(o) 606 607 for source in swig_sources: 608 target = swig_targets[source] 609 log.info("swigging %s to %s", source, target) 610 self.spawn(swig_cmd + ["-o", target, source]) 611 612 return new_sources 613 614 def find_swig(self): 615 """Return the name of the SWIG executable. On Unix, this is 616 just "swig" -- it should be in the PATH. Tries a bit harder on 617 Windows. 618 """ 619 if os.name == "posix": 620 return "swig" 621 elif os.name == "nt": 622 # Look for SWIG in its standard installation directory on 623 # Windows (or so I presume!). If we find it there, great; 624 # if not, act like Unix and assume it's in the PATH. 625 for vers in ("1.3", "1.2", "1.1"): 626 fn = os.path.join("c:\\swig%s" % vers, "swig.exe") 627 if os.path.isfile(fn): 628 return fn 629 else: 630 return "swig.exe" 631 else: 632 raise DistutilsPlatformError( 633 "I don't know how to find (much less run) SWIG " 634 "on platform '%s'" % os.name) 635 636 # -- Name generators ----------------------------------------------- 637 # (extension names, filenames, whatever) 638 def get_ext_fullpath(self, ext_name): 639 """Returns the path of the filename for a given extension. 640 641 The file is located in `build_lib` or directly in the package 642 (inplace option). 643 """ 644 fullname = self.get_ext_fullname(ext_name) 645 modpath = fullname.split('.') 646 filename = self.get_ext_filename(modpath[-1]) 647 648 if not self.inplace: 649 # no further work needed 650 # returning : 651 # build_dir/package/path/filename 652 filename = os.path.join(*modpath[:-1]+[filename]) 653 return os.path.join(self.build_lib, filename) 654 655 # the inplace option requires to find the package directory 656 # using the build_py command for that 657 package = '.'.join(modpath[0:-1]) 658 build_py = self.get_finalized_command('build_py') 659 package_dir = os.path.abspath(build_py.get_package_dir(package)) 660 661 # returning 662 # package_dir/filename 663 return os.path.join(package_dir, filename) 664 665 def get_ext_fullname(self, ext_name): 666 """Returns the fullname of a given extension name. 667 668 Adds the `package.` prefix""" 669 if self.package is None: 670 return ext_name 671 else: 672 return self.package + '.' + ext_name 673 674 def get_ext_filename(self, ext_name): 675 r"""Convert the name of an extension (eg. "foo.bar") into the name 676 of the file from which it will be loaded (eg. "foo/bar.so", or 677 "foo\bar.pyd"). 678 """ 679 from distutils.sysconfig import get_config_var 680 ext_path = ext_name.split('.') 681 ext_suffix = get_config_var('EXT_SUFFIX') 682 return os.path.join(*ext_path) + ext_suffix 683 684 def get_export_symbols(self, ext): 685 """Return the list of symbols that a shared extension has to 686 export. This either uses 'ext.export_symbols' or, if it's not 687 provided, "PyInit_" + module_name. Only relevant on Windows, where 688 the .pyd file (DLL) must export the module "PyInit_" function. 689 """ 690 initfunc_name = "PyInit_" + ext.name.split('.')[-1] 691 if initfunc_name not in ext.export_symbols: 692 ext.export_symbols.append(initfunc_name) 693 return ext.export_symbols 694 695 def get_libraries(self, ext): 696 """Return the list of libraries to link against when building a 697 shared extension. On most platforms, this is just 'ext.libraries'; 698 on Windows, we add the Python library (eg. python20.dll). 699 """ 700 # The python library is always needed on Windows. For MSVC, this 701 # is redundant, since the library is mentioned in a pragma in 702 # pyconfig.h that MSVC groks. The other Windows compilers all seem 703 # to need it mentioned explicitly, though, so that's what we do. 704 # Append '_d' to the python import library on debug builds. 705 if sys.platform == "win32": 706 from distutils._msvccompiler import MSVCCompiler 707 if not isinstance(self.compiler, MSVCCompiler): 708 template = "python%d%d" 709 if self.debug: 710 template = template + '_d' 711 pythonlib = (template % 712 (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff)) 713 # don't extend ext.libraries, it may be shared with other 714 # extensions, it is a reference to the original list 715 return ext.libraries + [pythonlib] 716 else: 717 return ext.libraries 718 elif sys.platform[:6] == "cygwin": 719 template = "python%d.%d" 720 pythonlib = (template % 721 (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff)) 722 # don't extend ext.libraries, it may be shared with other 723 # extensions, it is a reference to the original list 724 return ext.libraries + [pythonlib] 725 elif sys.platform[:6] == "atheos": 726 from distutils import sysconfig 727 728 template = "python%d.%d" 729 pythonlib = (template % 730 (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff)) 731 # Get SHLIBS from Makefile 732 extra = [] 733 for lib in sysconfig.get_config_var('SHLIBS').split(): 734 if lib.startswith('-l'): 735 extra.append(lib[2:]) 736 else: 737 extra.append(lib) 738 # don't extend ext.libraries, it may be shared with other 739 # extensions, it is a reference to the original list 740 return ext.libraries + [pythonlib, "m"] + extra 741 elif sys.platform == 'darwin': 742 # Don't use the default code below 743 return ext.libraries 744 elif sys.platform[:3] == 'aix': 745 # Don't use the default code below 746 return ext.libraries 747 else: 748 from distutils import sysconfig 749 if sysconfig.get_config_var('Py_ENABLE_SHARED'): 750 pythonlib = 'python{}.{}{}'.format( 751 sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff, 752 sysconfig.get_config_var('ABIFLAGS')) 753 return ext.libraries + [pythonlib] 754 else: 755 return ext.libraries 756