1 """distutils.command.build_ext 2 3 Implements the Distutils 'build_ext' command, for building extension 4 modules (currently limited to C extensions, should accommodate C++ 5 extensions ASAP).""" 6 7 # This module should be kept compatible with Python 2.1. 8 9 __revision__ = "$Id$" 10 11 import sys, os, string, re 12 from types import * 13 from site import USER_BASE, USER_SITE 14 from distutils.core import Command 15 from distutils.errors import * 16 from distutils.sysconfig import customize_compiler, get_python_version 17 from distutils.dep_util import newer_group 18 from distutils.extension import Extension 19 from distutils.util import get_platform 20 from distutils import log 21 22 if os.name == 'nt': 23 from distutils.msvccompiler import get_build_version 24 MSVC_VERSION = int(get_build_version()) 25 26 # An extension name is just a dot-separated list of Python NAMEs (ie. 27 # the same as a fully-qualified module name). 28 extension_name_re = re.compile \ 29 (r'^[a-zA-Z_][a-zA-Z_0-9]*(\.[a-zA-Z_][a-zA-Z_0-9]*)*$') 30 31 32 def show_compilers (): 33 from distutils.ccompiler import show_compilers 34 show_compilers() 35 36 37 class build_ext (Command): 38 39 description = "build C/C++ extensions (compile/link to build directory)" 40 41 # XXX thoughts on how to deal with complex command-line options like 42 # these, i.e. how to make it so fancy_getopt can suck them off the 43 # command line and make it look like setup.py defined the appropriate 44 # lists of tuples of what-have-you. 45 # - each command needs a callback to process its command-line options 46 # - Command.__init__() needs access to its share of the whole 47 # command line (must ultimately come from 48 # Distribution.parse_command_line()) 49 # - it then calls the current command class' option-parsing 50 # callback to deal with weird options like -D, which have to 51 # parse the option text and churn out some custom data 52 # structure 53 # - that data structure (in this case, a list of 2-tuples) 54 # will then be present in the command object by the time 55 # we get to finalize_options() (i.e. the constructor 56 # takes care of both command-line and client options 57 # in between initialize_options() and finalize_options()) 58 59 sep_by = " (separated by '%s')" % os.pathsep 60 user_options = [ 61 ('build-lib=', 'b', 62 "directory for compiled extension modules"), 63 ('build-temp=', 't', 64 "directory for temporary files (build by-products)"), 65 ('plat-name=', 'p', 66 "platform name to cross-compile for, if supported " 67 "(default: %s)" % get_platform()), 68 ('inplace', 'i', 69 "ignore build-lib and put compiled extensions into the source " + 70 "directory alongside your pure Python modules"), 71 ('include-dirs=', 'I', 72 "list of directories to search for header files" + sep_by), 73 ('define=', 'D', 74 "C preprocessor macros to define"), 75 ('undef=', 'U', 76 "C preprocessor macros to undefine"), 77 ('libraries=', 'l', 78 "external C libraries to link with"), 79 ('library-dirs=', 'L', 80 "directories to search for external C libraries" + sep_by), 81 ('rpath=', 'R', 82 "directories to search for shared C libraries at runtime"), 83 ('link-objects=', 'O', 84 "extra explicit link objects to include in the link"), 85 ('debug', 'g', 86 "compile/link with debugging information"), 87 ('force', 'f', 88 "forcibly build everything (ignore file timestamps)"), 89 ('compiler=', 'c', 90 "specify the compiler type"), 91 ('swig-cpp', None, 92 "make SWIG create C++ files (default is C)"), 93 ('swig-opts=', None, 94 "list of SWIG command line options"), 95 ('swig=', None, 96 "path to the SWIG executable"), 97 ('user', None, 98 "add user include, library and rpath"), 99 ] 100 101 boolean_options = ['inplace', 'debug', 'force', 'swig-cpp', 'user'] 102 103 help_options = [ 104 ('help-compiler', None, 105 "list available compilers", show_compilers), 106 ] 107 108 def initialize_options (self): 109 self.extensions = None 110 self.build_lib = None 111 self.plat_name = None 112 self.build_temp = None 113 self.inplace = 0 114 self.package = None 115 116 self.include_dirs = None 117 self.define = None 118 self.undef = None 119 self.libraries = None 120 self.library_dirs = None 121 self.rpath = None 122 self.link_objects = None 123 self.debug = None 124 self.force = None 125 self.compiler = None 126 self.swig = None 127 self.swig_cpp = None 128 self.swig_opts = None 129 self.user = None 130 131 def finalize_options(self): 132 from distutils import sysconfig 133 134 self.set_undefined_options('build', 135 ('build_lib', 'build_lib'), 136 ('build_temp', 'build_temp'), 137 ('compiler', 'compiler'), 138 ('debug', 'debug'), 139 ('force', 'force'), 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 # Put the Python "system" include dir at the end, so that 158 # any local include dirs take precedence. 159 self.include_dirs.append(py_include) 160 if plat_py_include != py_include: 161 self.include_dirs.append(plat_py_include) 162 163 self.ensure_string_list('libraries') 164 self.ensure_string_list('link_objects') 165 166 # Life is easier if we're not forever checking for None, so 167 # simplify these options to empty lists if unset 168 if self.libraries is None: 169 self.libraries = [] 170 if self.library_dirs is None: 171 self.library_dirs = [] 172 elif type(self.library_dirs) is StringType: 173 self.library_dirs = string.split(self.library_dirs, os.pathsep) 174 175 if self.rpath is None: 176 self.rpath = [] 177 elif type(self.rpath) is StringType: 178 self.rpath = string.split(self.rpath, os.pathsep) 179 180 # for extensions under windows use different directories 181 # for Release and Debug builds. 182 # also Python's library directory must be appended to library_dirs 183 if os.name == 'nt': 184 # the 'libs' directory is for binary installs - we assume that 185 # must be the *native* platform. But we don't really support 186 # cross-compiling via a binary install anyway, so we let it go. 187 self.library_dirs.append(os.path.join(sys.exec_prefix, 'libs')) 188 if self.debug: 189 self.build_temp = os.path.join(self.build_temp, "Debug") 190 else: 191 self.build_temp = os.path.join(self.build_temp, "Release") 192 193 # Append the source distribution include and library directories, 194 # this allows distutils on windows to work in the source tree 195 self.include_dirs.append(os.path.join(sys.exec_prefix, 'PC')) 196 if MSVC_VERSION == 9: 197 # Use the .lib files for the correct architecture 198 if self.plat_name == 'win32': 199 suffix = '' 200 else: 201 # win-amd64 or win-ia64 202 suffix = self.plat_name[4:] 203 # We could have been built in one of two places; add both 204 for d in ('PCbuild',), ('PC', 'VS9.0'): 205 new_lib = os.path.join(sys.exec_prefix, *d) 206 if suffix: 207 new_lib = os.path.join(new_lib, suffix) 208 self.library_dirs.append(new_lib) 209 210 elif MSVC_VERSION == 8: 211 self.library_dirs.append(os.path.join(sys.exec_prefix, 212 'PC', 'VS8.0')) 213 elif MSVC_VERSION == 7: 214 self.library_dirs.append(os.path.join(sys.exec_prefix, 215 'PC', 'VS7.1')) 216 else: 217 self.library_dirs.append(os.path.join(sys.exec_prefix, 218 'PC', 'VC6')) 219 220 # OS/2 (EMX) doesn't support Debug vs Release builds, but has the 221 # import libraries in its "Config" subdirectory 222 if os.name == 'os2': 223 self.library_dirs.append(os.path.join(sys.exec_prefix, 'Config')) 224 225 # for extensions under Cygwin and AtheOS Python's library directory must be 226 # appended to library_dirs 227 if sys.platform[:6] == 'cygwin' or sys.platform[:6] == 'atheos': 228 if sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")): 229 # building third party extensions 230 self.library_dirs.append(os.path.join(sys.prefix, "lib", 231 "python" + get_python_version(), 232 "config")) 233 else: 234 # building python standard extensions 235 self.library_dirs.append('.') 236 237 # For building extensions with a shared Python library, 238 # Python's library directory must be appended to library_dirs 239 # See Issues: #1600860, #4366 240 if (sysconfig.get_config_var('Py_ENABLE_SHARED')): 241 if not sysconfig.python_build: 242 # building third party extensions 243 self.library_dirs.append(sysconfig.get_config_var('LIBDIR')) 244 else: 245 # building python standard extensions 246 self.library_dirs.append('.') 247 248 # The argument parsing will result in self.define being a string, but 249 # it has to be a list of 2-tuples. All the preprocessor symbols 250 # specified by the 'define' option will be set to '1'. Multiple 251 # symbols can be separated with commas. 252 253 if self.define: 254 defines = self.define.split(',') 255 self.define = map(lambda symbol: (symbol, '1'), defines) 256 257 # The option for macros to undefine is also a string from the 258 # option parsing, but has to be a list. Multiple symbols can also 259 # be separated with commas here. 260 if self.undef: 261 self.undef = self.undef.split(',') 262 263 if self.swig_opts is None: 264 self.swig_opts = [] 265 else: 266 self.swig_opts = self.swig_opts.split(' ') 267 268 # Finally add the user include and library directories if requested 269 if self.user: 270 user_include = os.path.join(USER_BASE, "include") 271 user_lib = os.path.join(USER_BASE, "lib") 272 if os.path.isdir(user_include): 273 self.include_dirs.append(user_include) 274 if os.path.isdir(user_lib): 275 self.library_dirs.append(user_lib) 276 self.rpath.append(user_lib) 277 278 def run(self): 279 from distutils.ccompiler import new_compiler 280 281 # 'self.extensions', as supplied by setup.py, is a list of 282 # Extension instances. See the documentation for Extension (in 283 # distutils.extension) for details. 284 # 285 # For backwards compatibility with Distutils 0.8.2 and earlier, we 286 # also allow the 'extensions' list to be a list of tuples: 287 # (ext_name, build_info) 288 # where build_info is a dictionary containing everything that 289 # Extension instances do except the name, with a few things being 290 # differently named. We convert these 2-tuples to Extension 291 # instances as needed. 292 293 if not self.extensions: 294 return 295 296 # If we were asked to build any C/C++ libraries, make sure that the 297 # directory where we put them is in the library search path for 298 # linking extensions. 299 if self.distribution.has_c_libraries(): 300 build_clib = self.get_finalized_command('build_clib') 301 self.libraries.extend(build_clib.get_library_names() or []) 302 self.library_dirs.append(build_clib.build_clib) 303 304 # Setup the CCompiler object that we'll use to do all the 305 # compiling and linking 306 self.compiler = new_compiler(compiler=self.compiler, 307 verbose=self.verbose, 308 dry_run=self.dry_run, 309 force=self.force) 310 customize_compiler(self.compiler) 311 # If we are cross-compiling, init the compiler now (if we are not 312 # cross-compiling, init would not hurt, but people may rely on 313 # late initialization of compiler even if they shouldn't...) 314 if os.name == 'nt' and self.plat_name != get_platform(): 315 self.compiler.initialize(self.plat_name) 316 317 # And make sure that any compile/link-related options (which might 318 # come from the command-line or from the setup script) are set in 319 # that CCompiler object -- that way, they automatically apply to 320 # all compiling and linking done here. 321 if self.include_dirs is not None: 322 self.compiler.set_include_dirs(self.include_dirs) 323 if self.define is not None: 324 # 'define' option is a list of (name,value) tuples 325 for (name, value) in self.define: 326 self.compiler.define_macro(name, value) 327 if self.undef is not None: 328 for macro in self.undef: 329 self.compiler.undefine_macro(macro) 330 if self.libraries is not None: 331 self.compiler.set_libraries(self.libraries) 332 if self.library_dirs is not None: 333 self.compiler.set_library_dirs(self.library_dirs) 334 if self.rpath is not None: 335 self.compiler.set_runtime_library_dirs(self.rpath) 336 if self.link_objects is not None: 337 self.compiler.set_link_objects(self.link_objects) 338 339 # Now actually compile and link everything. 340 self.build_extensions() 341 342 def check_extensions_list(self, extensions): 343 """Ensure that the list of extensions (presumably provided as a 344 command option 'extensions') is valid, i.e. it is a list of 345 Extension objects. We also support the old-style list of 2-tuples, 346 where the tuples are (ext_name, build_info), which are converted to 347 Extension instances here. 348 349 Raise DistutilsSetupError if the structure is invalid anywhere; 350 just returns otherwise. 351 """ 352 if not isinstance(extensions, list): 353 raise DistutilsSetupError, \ 354 "'ext_modules' option must be a list of Extension instances" 355 356 for i, ext in enumerate(extensions): 357 if isinstance(ext, Extension): 358 continue # OK! (assume type-checking done 359 # by Extension constructor) 360 361 if not isinstance(ext, tuple) or len(ext) != 2: 362 raise DistutilsSetupError, \ 363 ("each element of 'ext_modules' option must be an " 364 "Extension instance or 2-tuple") 365 366 ext_name, build_info = ext 367 368 log.warn(("old-style (ext_name, build_info) tuple found in " 369 "ext_modules for extension '%s'" 370 "-- please convert to Extension instance" % ext_name)) 371 372 if not (isinstance(ext_name, str) and 373 extension_name_re.match(ext_name)): 374 raise DistutilsSetupError, \ 375 ("first element of each tuple in 'ext_modules' " 376 "must be the extension name (a string)") 377 378 if not isinstance(build_info, dict): 379 raise DistutilsSetupError, \ 380 ("second element of each tuple in 'ext_modules' " 381 "must be a dictionary (build info)") 382 383 # OK, the (ext_name, build_info) dict is type-safe: convert it 384 # to an Extension instance. 385 ext = Extension(ext_name, build_info['sources']) 386 387 # Easy stuff: one-to-one mapping from dict elements to 388 # instance attributes. 389 for key in ('include_dirs', 'library_dirs', 'libraries', 390 'extra_objects', 'extra_compile_args', 391 'extra_link_args'): 392 val = build_info.get(key) 393 if val is not None: 394 setattr(ext, key, val) 395 396 # Medium-easy stuff: same syntax/semantics, different names. 397 ext.runtime_library_dirs = build_info.get('rpath') 398 if 'def_file' in build_info: 399 log.warn("'def_file' element of build info dict " 400 "no longer supported") 401 402 # Non-trivial stuff: 'macros' split into 'define_macros' 403 # and 'undef_macros'. 404 macros = build_info.get('macros') 405 if macros: 406 ext.define_macros = [] 407 ext.undef_macros = [] 408 for macro in macros: 409 if not (isinstance(macro, tuple) and len(macro) in (1, 2)): 410 raise DistutilsSetupError, \ 411 ("'macros' element of build info dict " 412 "must be 1- or 2-tuple") 413 if len(macro) == 1: 414 ext.undef_macros.append(macro[0]) 415 elif len(macro) == 2: 416 ext.define_macros.append(macro) 417 418 extensions[i] = ext 419 420 def get_source_files(self): 421 self.check_extensions_list(self.extensions) 422 filenames = [] 423 424 # Wouldn't it be neat if we knew the names of header files too... 425 for ext in self.extensions: 426 filenames.extend(ext.sources) 427 428 return filenames 429 430 def get_outputs(self): 431 # Sanity check the 'extensions' list -- can't assume this is being 432 # done in the same run as a 'build_extensions()' call (in fact, we 433 # can probably assume that it *isn't*!). 434 self.check_extensions_list(self.extensions) 435 436 # And build the list of output (built) filenames. Note that this 437 # ignores the 'inplace' flag, and assumes everything goes in the 438 # "build" tree. 439 outputs = [] 440 for ext in self.extensions: 441 outputs.append(self.get_ext_fullpath(ext.name)) 442 return outputs 443 444 def build_extensions(self): 445 # First, sanity-check the 'extensions' list 446 self.check_extensions_list(self.extensions) 447 448 for ext in self.extensions: 449 self.build_extension(ext) 450 451 def build_extension(self, ext): 452 sources = ext.sources 453 if sources is None or type(sources) not in (ListType, TupleType): 454 raise DistutilsSetupError, \ 455 ("in 'ext_modules' option (extension '%s'), " + 456 "'sources' must be present and must be " + 457 "a list of source filenames") % ext.name 458 sources = list(sources) 459 460 ext_path = self.get_ext_fullpath(ext.name) 461 depends = sources + ext.depends 462 if not (self.force or newer_group(depends, ext_path, 'newer')): 463 log.debug("skipping '%s' extension (up-to-date)", ext.name) 464 return 465 else: 466 log.info("building '%s' extension", ext.name) 467 468 # First, scan the sources for SWIG definition files (.i), run 469 # SWIG on 'em to create .c files, and modify the sources list 470 # accordingly. 471 sources = self.swig_sources(sources, ext) 472 473 # Next, compile the source code to object files. 474 475 # XXX not honouring 'define_macros' or 'undef_macros' -- the 476 # CCompiler API needs to change to accommodate this, and I 477 # want to do one thing at a time! 478 479 # Two possible sources for extra compiler arguments: 480 # - 'extra_compile_args' in Extension object 481 # - CFLAGS environment variable (not particularly 482 # elegant, but people seem to expect it and I 483 # guess it's useful) 484 # The environment variable should take precedence, and 485 # any sensible compiler will give precedence to later 486 # command line args. Hence we combine them in order: 487 extra_args = ext.extra_compile_args or [] 488 489 macros = ext.define_macros[:] 490 for undef in ext.undef_macros: 491 macros.append((undef,)) 492 493 objects = self.compiler.compile(sources, 494 output_dir=self.build_temp, 495 macros=macros, 496 include_dirs=ext.include_dirs, 497 debug=self.debug, 498 extra_postargs=extra_args, 499 depends=ext.depends) 500 501 # XXX -- this is a Vile HACK! 502 # 503 # The setup.py script for Python on Unix needs to be able to 504 # get this list so it can perform all the clean up needed to 505 # avoid keeping object files around when cleaning out a failed 506 # build of an extension module. Since Distutils does not 507 # track dependencies, we have to get rid of intermediates to 508 # ensure all the intermediates will be properly re-built. 509 # 510 self._built_objects = objects[:] 511 512 # Now link the object files together into a "shared object" -- 513 # of course, first we have to figure out all the other things 514 # that go into the mix. 515 if ext.extra_objects: 516 objects.extend(ext.extra_objects) 517 extra_args = ext.extra_link_args or [] 518 519 # Detect target language, if not provided 520 language = ext.language or self.compiler.detect_language(sources) 521 522 self.compiler.link_shared_object( 523 objects, ext_path, 524 libraries=self.get_libraries(ext), 525 library_dirs=ext.library_dirs, 526 runtime_library_dirs=ext.runtime_library_dirs, 527 extra_postargs=extra_args, 528 export_symbols=self.get_export_symbols(ext), 529 debug=self.debug, 530 build_temp=self.build_temp, 531 target_lang=language) 532 533 534 def swig_sources (self, sources, extension): 535 536 """Walk the list of source files in 'sources', looking for SWIG 537 interface (.i) files. Run SWIG on all that are found, and 538 return a modified 'sources' list with SWIG source files replaced 539 by the generated C (or C++) files. 540 """ 541 542 new_sources = [] 543 swig_sources = [] 544 swig_targets = {} 545 546 # XXX this drops generated C/C++ files into the source tree, which 547 # is fine for developers who want to distribute the generated 548 # source -- but there should be an option to put SWIG output in 549 # the temp dir. 550 551 if self.swig_cpp: 552 log.warn("--swig-cpp is deprecated - use --swig-opts=-c++") 553 554 if self.swig_cpp or ('-c++' in self.swig_opts) or \ 555 ('-c++' in extension.swig_opts): 556 target_ext = '.cpp' 557 else: 558 target_ext = '.c' 559 560 for source in sources: 561 (base, ext) = os.path.splitext(source) 562 if ext == ".i": # SWIG interface file 563 new_sources.append(base + '_wrap' + target_ext) 564 swig_sources.append(source) 565 swig_targets[source] = new_sources[-1] 566 else: 567 new_sources.append(source) 568 569 if not swig_sources: 570 return new_sources 571 572 swig = self.swig or self.find_swig() 573 swig_cmd = [swig, "-python"] 574 swig_cmd.extend(self.swig_opts) 575 if self.swig_cpp: 576 swig_cmd.append("-c++") 577 578 # Do not override commandline arguments 579 if not self.swig_opts: 580 for o in extension.swig_opts: 581 swig_cmd.append(o) 582 583 for source in swig_sources: 584 target = swig_targets[source] 585 log.info("swigging %s to %s", source, target) 586 self.spawn(swig_cmd + ["-o", target, source]) 587 588 return new_sources 589 590 # swig_sources () 591 592 def find_swig (self): 593 """Return the name of the SWIG executable. On Unix, this is 594 just "swig" -- it should be in the PATH. Tries a bit harder on 595 Windows. 596 """ 597 598 if os.name == "posix": 599 return "swig" 600 elif os.name == "nt": 601 602 # Look for SWIG in its standard installation directory on 603 # Windows (or so I presume!). If we find it there, great; 604 # if not, act like Unix and assume it's in the PATH. 605 for vers in ("1.3", "1.2", "1.1"): 606 fn = os.path.join("c:\\swig%s" % vers, "swig.exe") 607 if os.path.isfile(fn): 608 return fn 609 else: 610 return "swig.exe" 611 612 elif os.name == "os2": 613 # assume swig available in the PATH. 614 return "swig.exe" 615 616 else: 617 raise DistutilsPlatformError, \ 618 ("I don't know how to find (much less run) SWIG " 619 "on platform '%s'") % os.name 620 621 # find_swig () 622 623 # -- Name generators ----------------------------------------------- 624 # (extension names, filenames, whatever) 625 def get_ext_fullpath(self, ext_name): 626 """Returns the path of the filename for a given extension. 627 628 The file is located in `build_lib` or directly in the package 629 (inplace option). 630 """ 631 # makes sure the extension name is only using dots 632 all_dots = string.maketrans('/'+os.sep, '..') 633 ext_name = ext_name.translate(all_dots) 634 635 fullname = self.get_ext_fullname(ext_name) 636 modpath = fullname.split('.') 637 filename = self.get_ext_filename(ext_name) 638 filename = os.path.split(filename)[-1] 639 640 if not self.inplace: 641 # no further work needed 642 # returning : 643 # build_dir/package/path/filename 644 filename = os.path.join(*modpath[:-1]+[filename]) 645 return os.path.join(self.build_lib, filename) 646 647 # the inplace option requires to find the package directory 648 # using the build_py command for that 649 package = '.'.join(modpath[0:-1]) 650 build_py = self.get_finalized_command('build_py') 651 package_dir = os.path.abspath(build_py.get_package_dir(package)) 652 653 # returning 654 # package_dir/filename 655 return os.path.join(package_dir, filename) 656 657 def get_ext_fullname(self, ext_name): 658 """Returns the fullname of a given extension name. 659 660 Adds the `package.` prefix""" 661 if self.package is None: 662 return ext_name 663 else: 664 return self.package + '.' + ext_name 665 666 def get_ext_filename(self, ext_name): 667 r"""Convert the name of an extension (eg. "foo.bar") into the name 668 of the file from which it will be loaded (eg. "foo/bar.so", or 669 "foo\bar.pyd"). 670 """ 671 from distutils.sysconfig import get_config_var 672 ext_path = string.split(ext_name, '.') 673 # OS/2 has an 8 character module (extension) limit :-( 674 if os.name == "os2": 675 ext_path[len(ext_path) - 1] = ext_path[len(ext_path) - 1][:8] 676 # extensions in debug_mode are named 'module_d.pyd' under windows 677 so_ext = get_config_var('SO') 678 if os.name == 'nt' and self.debug: 679 return os.path.join(*ext_path) + '_d' + so_ext 680 return os.path.join(*ext_path) + so_ext 681 682 def get_export_symbols (self, ext): 683 """Return the list of symbols that a shared extension has to 684 export. This either uses 'ext.export_symbols' or, if it's not 685 provided, "init" + module_name. Only relevant on Windows, where 686 the .pyd file (DLL) must export the module "init" function. 687 """ 688 initfunc_name = "init" + ext.name.split('.')[-1] 689 if initfunc_name not in ext.export_symbols: 690 ext.export_symbols.append(initfunc_name) 691 return ext.export_symbols 692 693 def get_libraries (self, ext): 694 """Return the list of libraries to link against when building a 695 shared extension. On most platforms, this is just 'ext.libraries'; 696 on Windows and OS/2, we add the Python library (eg. python20.dll). 697 """ 698 # The python library is always needed on Windows. For MSVC, this 699 # is redundant, since the library is mentioned in a pragma in 700 # pyconfig.h that MSVC groks. The other Windows compilers all seem 701 # to need it mentioned explicitly, though, so that's what we do. 702 # Append '_d' to the python import library on debug builds. 703 if sys.platform == "win32": 704 from distutils.msvccompiler import MSVCCompiler 705 if not isinstance(self.compiler, MSVCCompiler): 706 template = "python%d%d" 707 if self.debug: 708 template = template + '_d' 709 pythonlib = (template % 710 (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff)) 711 # don't extend ext.libraries, it may be shared with other 712 # extensions, it is a reference to the original list 713 return ext.libraries + [pythonlib] 714 else: 715 return ext.libraries 716 elif sys.platform == "os2emx": 717 # EMX/GCC requires the python library explicitly, and I 718 # believe VACPP does as well (though not confirmed) - AIM Apr01 719 template = "python%d%d" 720 # debug versions of the main DLL aren't supported, at least 721 # not at this time - AIM Apr01 722 #if self.debug: 723 # template = template + '_d' 724 pythonlib = (template % 725 (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff)) 726 # don't extend ext.libraries, it may be shared with other 727 # extensions, it is a reference to the original list 728 return ext.libraries + [pythonlib] 729 elif sys.platform[:6] == "cygwin": 730 template = "python%d.%d" 731 pythonlib = (template % 732 (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff)) 733 # don't extend ext.libraries, it may be shared with other 734 # extensions, it is a reference to the original list 735 return ext.libraries + [pythonlib] 736 elif sys.platform[:6] == "atheos": 737 from distutils import sysconfig 738 739 template = "python%d.%d" 740 pythonlib = (template % 741 (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff)) 742 # Get SHLIBS from Makefile 743 extra = [] 744 for lib in sysconfig.get_config_var('SHLIBS').split(): 745 if lib.startswith('-l'): 746 extra.append(lib[2:]) 747 else: 748 extra.append(lib) 749 # don't extend ext.libraries, it may be shared with other 750 # extensions, it is a reference to the original list 751 return ext.libraries + [pythonlib, "m"] + extra 752 753 elif sys.platform == 'darwin': 754 # Don't use the default code below 755 return ext.libraries 756 elif sys.platform[:3] == 'aix': 757 # Don't use the default code below 758 return ext.libraries 759 else: 760 from distutils import sysconfig 761 if sysconfig.get_config_var('Py_ENABLE_SHARED'): 762 template = "python%d.%d" 763 pythonlib = (template % 764 (sys.hexversion >> 24, (sys.hexversion >> 16) & 0xff)) 765 return ext.libraries + [pythonlib] 766 else: 767 return ext.libraries 768 769 # class build_ext 770
