summaryrefslogtreecommitdiffstats
path: root/setup.py
blob: 4c51baba37a8fa944779f6cf18d8036740c21c3b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
# Autodetecting setup.py script for building the Python extensions
#

__version__ = "$Revision$"

import sys, os, imp, re, optparse

from distutils import log
from distutils import sysconfig
from distutils import text_file
from distutils.errors import *
from distutils.core import Extension, setup
from distutils.command.build_ext import build_ext
from distutils.command.install import install
from distutils.command.install_lib import install_lib

# This global variable is used to hold the list of modules to be disabled.
disabled_module_list = []

def add_dir_to_list(dirlist, dir):
    """Add the directory 'dir' to the list 'dirlist' (at the front) if
    1) 'dir' is not already in 'dirlist'
    2) 'dir' actually exists, and is a directory."""
    if dir is not None and os.path.isdir(dir) and dir not in dirlist:
        dirlist.insert(0, dir)

def find_file(filename, std_dirs, paths):
    """Searches for the directory where a given file is located,
    and returns a possibly-empty list of additional directories, or None
    if the file couldn't be found at all.

    'filename' is the name of a file, such as readline.h or libcrypto.a.
    'std_dirs' is the list of standard system directories; if the
        file is found in one of them, no additional directives are needed.
    'paths' is a list of additional locations to check; if the file is
        found in one of them, the resulting list will contain the directory.
    """

    # Check the standard locations
    for dir in std_dirs:
        f = os.path.join(dir, filename)
        if os.path.exists(f): return []

    # Check the additional directories
    for dir in paths:
        f = os.path.join(dir, filename)
        if os.path.exists(f):
            return [dir]

    # Not found anywhere
    return None

def find_library_file(compiler, libname, std_dirs, paths):
    result = compiler.find_library_file(std_dirs + paths, libname)
    if result is None:
        return None

    # Check whether the found file is in one of the standard directories
    dirname = os.path.dirname(result)
    for p in std_dirs:
        # Ensure path doesn't end with path separator
        p = p.rstrip(os.sep)
        if p == dirname:
            return [ ]

    # Otherwise, it must have been in one of the additional directories,
    # so we have to figure out which one.
    for p in paths:
        # Ensure path doesn't end with path separator
        p = p.rstrip(os.sep)
        if p == dirname:
            return [p]
    else:
        assert False, "Internal error: Path not found in std_dirs or paths"

def module_enabled(extlist, modname):
    """Returns whether the module 'modname' is present in the list
    of extensions 'extlist'."""
    extlist = [ext for ext in extlist if ext.name == modname]
    return len(extlist)

def find_module_file(module, dirlist):
    """Find a module in a set of possible folders. If it is not found
    return the unadorned filename"""
    list = find_file(module, [], dirlist)
    if not list:
        return module
    if len(list) > 1:
        log.info("WARNING: multiple copies of %s found"%module)
    return os.path.join(list[0], module)

class PyBuildExt(build_ext):

    def __init__(self, dist):
        build_ext.__init__(self, dist)
        self.failed = []

    def build_extensions(self):

        # Detect which modules should be compiled
        missing = self.detect_modules()

        # Remove modules that are present on the disabled list
        extensions = [ext for ext in self.extensions
                      if ext.name not in disabled_module_list]
        # move ctypes to the end, it depends on other modules
        ext_map = dict((ext.name, i) for i, ext in enumerate(extensions))
        if "_ctypes" in ext_map:
            ctypes = extensions.pop(ext_map["_ctypes"])
            extensions.append(ctypes)
        self.extensions = extensions

        # Fix up the autodetected modules, prefixing all the source files
        # with Modules/ and adding Python's include directory to the path.
        (srcdir,) = sysconfig.get_config_vars('srcdir')
        if not srcdir:
            # Maybe running on Windows but not using CYGWIN?
            raise ValueError("No source directory; cannot proceed.")

        # Figure out the location of the source code for extension modules
        moddir = os.path.join(os.getcwd(), srcdir, 'Modules')
        moddir = os.path.normpath(moddir)
        srcdir, tail = os.path.split(moddir)
        srcdir = os.path.normpath(srcdir)
        moddir = os.path.normpath(moddir)

        moddirlist = [moddir]
        incdirlist = ['./Include']

        # Platform-dependent module source and include directories
        platform = self.get_platform()
        if platform in ('darwin', 'mac') and ("--disable-toolbox-glue" not in
            sysconfig.get_config_var("CONFIG_ARGS")):
            # Mac OS X also includes some mac-specific modules
            macmoddir = os.path.join(os.getcwd(), srcdir, 'Mac/Modules')
            moddirlist.append(macmoddir)
            incdirlist.append('./Mac/Include')

        alldirlist = moddirlist + incdirlist

        # Fix up the paths for scripts, too
        self.distribution.scripts = [os.path.join(srcdir, filename)
                                     for filename in self.distribution.scripts]

        for ext in self.extensions[:]:
            ext.sources = [ find_module_file(filename, moddirlist)
                            for filename in ext.sources ]
            if ext.depends is not None:
                ext.depends = [find_module_file(filename, alldirlist)
                               for filename in ext.depends]
            ext.include_dirs.append( '.' ) # to get config.h
            for incdir in incdirlist:
                ext.include_dirs.append( os.path.join(srcdir, incdir) )

            # If a module has already been built statically,
            # don't build it here
            if ext.name in sys.builtin_module_names:
                self.extensions.remove(ext)

        if platform != 'mac':
            # Parse Modules/Setup and Modules/Setup.local to figure out which
            # modules are turned on in the file.
            remove_modules = []
            for filename in ('Modules/Setup', 'Modules/Setup.local'):
                input = text_file.TextFile(filename, join_lines=1)
                while 1:
                    line = input.readline()
                    if not line: break
                    line = line.split()
                    remove_modules.append(line[0])
                input.close()

            for ext in self.extensions[:]:
                if ext.name in remove_modules:
                    self.extensions.remove(ext)

        # When you run "make CC=altcc" or something similar, you really want
        # those environment variables passed into the setup.py phase.  Here's
        # a small set of useful ones.
        compiler = os.environ.get('CC')
        args = {}
        # unfortunately, distutils doesn't let us provide separate C and C++
        # compilers
        if compiler is not None:
            (ccshared,cflags) = sysconfig.get_config_vars('CCSHARED','CFLAGS')
            args['compiler_so'] = compiler + ' ' + ccshared + ' ' + cflags
        self.compiler.set_executables(**args)

        build_ext.build_extensions(self)

        longest = max([len(e.name) for e in self.extensions])
        if self.failed:
            longest = max(longest, max([len(name) for name in self.failed]))

        def print_three_column(lst):
            lst.sort(key=str.lower)
            # guarantee zip() doesn't drop anything
            while len(lst) % 3:
                lst.append("")
            for e, f, g in zip(lst[::3], lst[1::3], lst[2::3]):
                print("%-*s   %-*s   %-*s" % (longest, e, longest, f,
                                              longest, g))

        if missing:
            print()
            print("Failed to find the necessary bits to build these modules:")
            print_three_column(missing)
            print("To find the necessary bits, look in setup.py in"
                  " detect_modules() for the module's name.")
            print()

        if self.failed:
            failed = self.failed[:]
            print()
            print("Failed to build these modules:")
            print_three_column(failed)
            print()

    def build_extension(self, ext):

        if ext.name == '_ctypes':
            if not self.configure_ctypes(ext):
                return

        try:
            build_ext.build_extension(self, ext)
        except (CCompilerError, DistutilsError) as why:
            self.announce('WARNING: building of extension "%s" failed: %s' %
                          (ext.name, sys.exc_info()[1]))
            self.failed.append(ext.name)
            return
        # Workaround for Mac OS X: The Carbon-based modules cannot be
        # reliably imported into a command-line Python
        if 'Carbon' in ext.extra_link_args:
            self.announce(
                'WARNING: skipping import check for Carbon-based "%s"' %
                ext.name)
            return
        # Workaround for Cygwin: Cygwin currently has fork issues when many
        # modules have been imported
        if self.get_platform() == 'cygwin':
            self.announce('WARNING: skipping import check for Cygwin-based "%s"'
                % ext.name)
            return
        ext_filename = os.path.join(
            self.build_lib,
            self.get_ext_filename(self.get_ext_fullname(ext.name)))
        try:
            imp.load_dynamic(ext.name, ext_filename)
        except ImportError as why:
            self.failed.append(ext.name)
            self.announce('*** WARNING: renaming "%s" since importing it'
                          ' failed: %s' % (ext.name, why), level=3)
            assert not self.inplace
            basename, tail = os.path.splitext(ext_filename)
            newname = basename + "_failed" + tail
            if os.path.exists(newname):
                os.remove(newname)
            os.rename(ext_filename, newname)

            # XXX -- This relies on a Vile HACK in
            # distutils.command.build_ext.build_extension().  The
            # _built_objects attribute is stored there strictly for
            # use here.
            # If there is a failure, _built_objects may not be there,
            # so catch the AttributeError and move on.
            try:
                for filename in self._built_objects:
                    os.remove(filename)
            except AttributeError:
                self.announce('unable to remove files (ignored)')
        except:
            exc_type, why, tb = sys.exc_info()
            self.announce('*** WARNING: importing extension "%s" '
                          'failed with %s: %s' % (ext.name, exc_type, why),
                          level=3)
            self.failed.append(ext.name)

    def get_platform(self):
        # Get value of sys.platform
        for platform in ['cygwin', 'darwin', 'atheos', 'osf1']:
            if sys.platform.startswith(platform):
                return platform
        return sys.platform

    def detect_modules(self):
        # Ensure that /usr/local is always used
        add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
        add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')

        # Add paths specified in the environment variables LDFLAGS and
        # CPPFLAGS for header and library files.
        # We must get the values from the Makefile and not the environment
        # directly since an inconsistently reproducible issue comes up where
        # the environment variable is not set even though the value were passed
        # into configure and stored in the Makefile (issue found on OS X 10.3).
        for env_var, arg_name, dir_list in (
                ('LDFLAGS', '-L', self.compiler.library_dirs),
                ('CPPFLAGS', '-I', self.compiler.include_dirs)):
            env_val = sysconfig.get_config_var(env_var)
            if env_val:
                # To prevent optparse from raising an exception about any
                # options in env_val that is doesn't know about we strip out
                # all double dashes and any dashes followed by a character
                # that is not for the option we are dealing with.
                #
                # Please note that order of the regex is important!  We must
                # strip out double-dashes first so that we don't end up with
                # substituting "--Long" to "-Long" and thus lead to "ong" being
                # used for a library directory.
                env_val = re.sub(r'(^|\s+)-(-|(?!%s))' % arg_name[1],
                                 ' ', env_val)
                parser = optparse.OptionParser()
                # Make sure that allowing args interspersed with options is
                # allowed
                parser.allow_interspersed_args = True
                parser.error = lambda msg: None
                parser.add_option(arg_name, dest="dirs", action="append")
                options = parser.parse_args(env_val.split())[0]
                if options.dirs:
                    for directory in options.dirs:
                        add_dir_to_list(dir_list, directory)

        if os.path.normpath(sys.prefix) != '/usr':
            add_dir_to_list(self.compiler.library_dirs,
                            sysconfig.get_config_var("LIBDIR"))
            add_dir_to_list(self.compiler.include_dirs,
                            sysconfig.get_config_var("INCLUDEDIR"))

        # lib_dirs and inc_dirs are used to search for files;
        # if a file is found in one of those directories, it can
        # be assumed that no additional -I,-L directives are needed.
        lib_dirs = self.compiler.library_dirs + [
            '/lib64', '/usr/lib64',
            '/lib', '/usr/lib',
            ]
        inc_dirs = self.compiler.include_dirs + ['/usr/include']
        exts = []
        missing = []

        config_h = sysconfig.get_config_h_filename()
        config_h_vars = sysconfig.parse_config_h(open(config_h))

        platform = self.get_platform()
        (srcdir,) = sysconfig.get_config_vars('srcdir')

        # Check for AtheOS which has libraries in non-standard locations
        if platform == 'atheos':
            lib_dirs += ['/system/libs', '/atheos/autolnk/lib']
            lib_dirs += os.getenv('LIBRARY_PATH', '').split(os.pathsep)
            inc_dirs += ['/system/include', '/atheos/autolnk/include']
            inc_dirs += os.getenv('C_INCLUDE_PATH', '').split(os.pathsep)

        # OSF/1 and Unixware have some stuff in /usr/ccs/lib (like -ldb)
        if platform in ['osf1', 'unixware7', 'openunix8']:
            lib_dirs += ['/usr/ccs/lib']

        if platform == 'darwin':
            # This should work on any unixy platform ;-)
            # If the user has bothered specifying additional -I and -L flags
            # in OPT and LDFLAGS we might as well use them here.
            #   NOTE: using shlex.split would technically be more correct, but
            # also gives a bootstrap problem. Let's hope nobody uses directories
            # with whitespace in the name to store libraries.
            cflags, ldflags = sysconfig.get_config_vars(
                    'CFLAGS', 'LDFLAGS')
            for item in cflags.split():
                if item.startswith('-I'):
                    inc_dirs.append(item[2:])

            for item in ldflags.split():
                if item.startswith('-L'):
                    lib_dirs.append(item[2:])

        # Check for MacOS X, which doesn't need libm.a at all
        math_libs = ['m']
        if platform in ['darwin', 'mac']:
            math_libs = []

        # XXX Omitted modules: gl, pure, dl, SGI-specific modules

        #
        # The following modules are all pretty straightforward, and compile
        # on pretty much any POSIXish platform.
        #

        # Some modules that are normally always on:
        exts.append( Extension('_weakref', ['_weakref.c']) )

        # array objects
        exts.append( Extension('array', ['arraymodule.c']) )
        # complex math library functions
        exts.append( Extension('cmath', ['cmathmodule.c'],
                               libraries=math_libs) )

        # math library functions, e.g. sin()
        exts.append( Extension('math',  ['mathmodule.c'],
                               libraries=math_libs) )
        # time operations and variables
        exts.append( Extension('time', ['timemodule.c'],
                               libraries=math_libs) )
        exts.append( Extension('datetime', ['datetimemodule.c', 'timemodule.c'],
                               libraries=math_libs) )
        # random number generator implemented in C
        exts.append( Extension("_random", ["_randommodule.c"]) )
        # fast iterator tools implemented in C
        exts.append( Extension("itertools", ["itertoolsmodule.c"]) )
        # high-performance collections
        exts.append( Extension("_collections", ["_collectionsmodule.c"]) )
        # bisect
        exts.append( Extension("_bisect", ["_bisectmodule.c"]) )
        # heapq
        exts.append( Extension("_heapq", ["_heapqmodule.c"]) )
        # operator.add() and similar goodies
        exts.append( Extension('operator', ['operator.c']) )
        # _functools
        exts.append( Extension("_functools", ["_functoolsmodule.c"]) )
        # atexit
        exts.append( Extension("atexit", ["atexitmodule.c"]) )
        # Python C API test module
        exts.append( Extension('_testcapi', ['_testcapimodule.c']) )
        # profiler (_lsprof is for cProfile.py)
        exts.append( Extension('_lsprof', ['_lsprof.c', 'rotatingtree.c']) )
        # static Unicode character database
        exts.append( Extension('unicodedata', ['unicodedata.c']) )
        # access to ISO C locale support
        data = open('pyconfig.h').read()
        m = re.search(r"#s*define\s+WITH_LIBINTL\s+1\s*", data)
        if m is not None:
            locale_libs = ['intl']
        else:
            locale_libs = []
        if platform == 'darwin':
            locale_extra_link_args = ['-framework', 'CoreFoundation']
        else:
            locale_extra_link_args = []


        exts.append( Extension('_locale', ['_localemodule.c'],
                               libraries=locale_libs,
                               extra_link_args=locale_extra_link_args) )

        # Modules with some UNIX dependencies -- on by default:
        # (If you have a really backward UNIX, select and socket may not be
        # supported...)

        # fcntl(2) and ioctl(2)
        exts.append( Extension('fcntl', ['fcntlmodule.c']) )
        if platform not in ['mac']:
            # pwd(3)
            exts.append( Extension('pwd', ['pwdmodule.c']) )
            # grp(3)
            exts.append( Extension('grp', ['grpmodule.c']) )
            # spwd, shadow passwords
            if (config_h_vars.get('HAVE_GETSPNAM', False) or
                    config_h_vars.get('HAVE_GETSPENT', False)):
                exts.append( Extension('spwd', ['spwdmodule.c']) )
            else:
                missing.append('spwd')
        else:
            missing.extend(['pwd', 'grp', 'spwd'])

        # select(2); not on ancient System V
        exts.append( Extension('select', ['selectmodule.c']) )

        # Helper module for various ascii-encoders
        exts.append( Extension('binascii', ['binascii.c']) )

        # Fred Drake's interface to the Python parser
        exts.append( Extension('parser', ['parsermodule.c']) )

        # Memory-mapped files (also works on Win32).
        if platform not in ['atheos', 'mac']:
            exts.append( Extension('mmap', ['mmapmodule.c']) )
        else:
            missing.append('mmap')

        # Lance Ellinghaus's syslog module
        if platform not in ['mac']:
            # syslog daemon interface
            exts.append( Extension('syslog', ['syslogmodule.c']) )
        else:
            missing.append('syslog')

        #
        # Here ends the simple stuff.  From here on, modules need certain
        # libraries, are platform-specific, or present other surprises.
        #

        # Multimedia modules
        # These don't work for 64-bit platforms!!!
        # These represent audio samples or images as strings:

        # Operations on audio samples
        # According to #993173, this one should actually work fine on
        # 64-bit platforms.
        exts.append( Extension('audioop', ['audioop.c']) )

        # readline
        do_readline = self.compiler.find_library_file(lib_dirs, 'readline')
        if platform == 'darwin':
            # MacOSX 10.4 has a broken readline. Don't try to build
            # the readline module unless the user has installed a fixed
            # readline package
            if find_file('readline/rlconf.h', inc_dirs, []) is None:
                do_readline = False
        if do_readline:
            if sys.platform == 'darwin':
                # In every directory on the search path search for a dynamic
                # library and then a static library, instead of first looking
                # for dynamic libraries on the entire path.
                # This way a staticly linked custom readline gets picked up
                # before the (broken) dynamic library in /usr/lib.
                readline_extra_link_args = ('-Wl,-search_paths_first',)
            else:
                readline_extra_link_args = ()

            readline_libs = ['readline']
            if self.compiler.find_library_file(lib_dirs,
                                                 'ncursesw'):
                readline_libs.append('ncursesw')
            elif self.compiler.find_library_file(lib_dirs,
                                                 'ncurses'):
                readline_libs.append('ncurses')
            elif self.compiler.find_library_file(lib_dirs, 'curses'):
                readline_libs.append('curses')
            elif self.compiler.find_library_file(lib_dirs +
                                               ['/usr/lib/termcap'],
                                               'termcap'):
                readline_libs.append('termcap')
            exts.append( Extension('readline', ['readline.c'],
                                   library_dirs=['/usr/lib/termcap'],
                                   extra_link_args=readline_extra_link_args,
                                   libraries=readline_libs) )
        else:
            missing.append('readline')

        if platform not in ['mac']:
            # crypt module.

            if self.compiler.find_library_file(lib_dirs, 'crypt'):
                libs = ['crypt']
            else:
                libs = []
            exts.append( Extension('crypt', ['cryptmodule.c'], libraries=libs) )
        else:
            missing.append('crypt')

        # CSV files
        exts.append( Extension('_csv', ['_csv.c']) )

        # socket(2)
        exts.append( Extension('_socket', ['socketmodule.c'],
                               depends = ['socketmodule.h']) )
        # Detect SSL support for the socket module (via _ssl)
        search_for_ssl_incs_in = [
                              '/usr/local/ssl/include',
                              '/usr/contrib/ssl/include/'
                             ]
        ssl_incs = find_file('openssl/ssl.h', inc_dirs,
                             search_for_ssl_incs_in
                             )
        if ssl_incs is not None:
            krb5_h = find_file('krb5.h', inc_dirs,
                               ['/usr/kerberos/include'])
            if krb5_h:
                ssl_incs += krb5_h
        ssl_libs = find_library_file(self.compiler, 'ssl',lib_dirs,
                                     ['/usr/local/ssl/lib',
                                      '/usr/contrib/ssl/lib/'
                                     ] )

        if (ssl_incs is not None and
            ssl_libs is not None):
            exts.append( Extension('_ssl', ['_ssl.c'],
                                   include_dirs = ssl_incs,
                                   library_dirs = ssl_libs,
                                   libraries = ['ssl', 'crypto'],
                                   depends = ['socketmodule.h']), )
        else:
            missing.append('_ssl')

        # find out which version of OpenSSL we have
        openssl_ver = 0
        openssl_ver_re = re.compile(
            '^\s*#\s*define\s+OPENSSL_VERSION_NUMBER\s+(0x[0-9a-fA-F]+)' )
        for ssl_inc_dir in inc_dirs + search_for_ssl_incs_in:
            name = os.path.join(ssl_inc_dir, 'openssl', 'opensslv.h')
            if os.path.isfile(name):
                try:
                    incfile = open(name, 'r')
                    for line in incfile:
                        m = openssl_ver_re.match(line)
                        if m:
                            openssl_ver = eval(m.group(1))
                            break
                except IOError:
                    pass

            # first version found is what we'll use (as the compiler should)
            if openssl_ver:
                break

        #print('openssl_ver = 0x%08x' % openssl_ver)

        if ssl_incs is not None and ssl_libs is not None:
            if openssl_ver >= 0x00907000:
                # The _hashlib module wraps optimized implementations
                # of hash functions from the OpenSSL library.
                exts.append( Extension('_hashlib', ['_hashopenssl.c'],
                                       include_dirs = ssl_incs,
                                       library_dirs = ssl_libs,
                                       libraries = ['ssl', 'crypto']) )
            else:
                print("warning: openssl 0x%08x is too old for _hashlib" %
                      openssl_ver)
                missing.append('_hashlib')
        else:
            missing.append('_hashlib')

        if openssl_ver < 0x00908000:
            # OpenSSL doesn't do these until 0.9.8 so we'll bring our own hash
            exts.append( Extension('_sha256', ['sha256module.c']) )
            exts.append( Extension('_sha512', ['sha512module.c']) )

        if openssl_ver < 0x00907000:
            # no openssl at all, use our own md5 and sha1
            exts.append( Extension('_md5', ['md5module.c']) )
            exts.append( Extension('_sha1', ['sha1module.c']) )

        # Modules that provide persistent dictionary-like semantics.  You will
        # probably want to arrange for at least one of them to be available on
        # your machine, though none are defined by default because of library
        # dependencies.  The Python module anydbm.py provides an
        # implementation independent wrapper for these; dumbdbm.py provides
        # similar functionality (but slower of course) implemented in Python.

        # Sleepycat^WOracle Berkeley DB interface.
        #  http://www.oracle.com/database/berkeley-db/db/index.html
        #
        # This requires the Sleepycat^WOracle DB code. The supported versions
        # are set below.  Visit the URL above to download
        # a release.  Most open source OSes come with one or more
        # versions of BerkeleyDB already installed.

        max_db_ver = (4, 6)
        min_db_ver = (3, 3)
        db_setup_debug = False   # verbose debug prints from this script?

        # construct a list of paths to look for the header file in on
        # top of the normal inc_dirs.
        db_inc_paths = [
            '/usr/include/db4',
            '/usr/local/include/db4',
            '/opt/sfw/include/db4',
            '/usr/include/db3',
            '/usr/local/include/db3',
            '/opt/sfw/include/db3',
            # Fink defaults (http://fink.sourceforge.net/)
            '/sw/include/db4',
            '/sw/include/db3',
        ]
        # 4.x minor number specific paths
        for x in range(max_db_ver[1]+1):
            db_inc_paths.append('/usr/include/db4%d' % x)
            db_inc_paths.append('/usr/include/db4.%d' % x)
            db_inc_paths.append('/usr/local/BerkeleyDB.4.%d/include' % x)
            db_inc_paths.append('/usr/local/include/db4%d' % x)
            db_inc_paths.append('/pkg/db-4.%d/include' % x)
            db_inc_paths.append('/opt/db-4.%d/include' % x)
            # MacPorts default (http://www.macports.org/)
            db_inc_paths.append('/opt/local/include/db4%d' % x)
        # 3.x minor number specific paths
        for x in (3,):
            db_inc_paths.append('/usr/include/db3%d' % x)
            db_inc_paths.append('/usr/local/BerkeleyDB.3.%d/include' % x)
            db_inc_paths.append('/usr/local/include/db3%d' % x)
            db_inc_paths.append('/pkg/db-3.%d/include' % x)
            db_inc_paths.append('/opt/db-3.%d/include' % x)

        # Add some common subdirectories for Sleepycat DB to the list,
        # based on the standard include directories. This way DB3/4 gets
        # picked up when it is installed in a non-standard prefix and
        # the user has added that prefix into inc_dirs.
        std_variants = []
        for dn in inc_dirs:
            std_variants.append(os.path.join(dn, 'db3'))
            std_variants.append(os.path.join(dn, 'db4'))
            for x in (0,1,2,3,4,5,6):
                std_variants.append(os.path.join(dn, "db4%d"%x))
                std_variants.append(os.path.join(dn, "db4.%d"%x))
            for x in (2,3):
                std_variants.append(os.path.join(dn, "db3%d"%x))
                std_variants.append(os.path.join(dn, "db3.%d"%x))

        db_inc_paths = std_variants + db_inc_paths
        db_inc_paths = [p for p in db_inc_paths if os.path.exists(p)]

        db_ver_inc_map = {}

        class db_found(Exception): pass
        try:
            # See whether there is a Sleepycat header in the standard
            # search path.
            for d in inc_dirs + db_inc_paths:
                f = os.path.join(d, "db.h")
                if db_setup_debug: print("db: looking for db.h in", f)
                if os.path.exists(f):
                    f = open(f).read()
                    m = re.search(r"#define\WDB_VERSION_MAJOR\W(\d+)", f)
                    if m:
                        db_major = int(m.group(1))
                        m = re.search(r"#define\WDB_VERSION_MINOR\W(\d+)", f)
                        db_minor = int(m.group(1))
                        db_ver = (db_major, db_minor)

                        # Avoid 4.6 prior to 4.6.21 due to a BerkeleyDB bug
                        if db_ver == (4, 6):
                            m = re.search(r"#define\WDB_VERSION_PATCH\W(\d+)", f)
                            db_patch = int(m.group(1))
                            if db_patch < 21:
                                print("db.h:", db_ver, "patch", db_patch,
                                      "being ignored (4.6.x must be >= 4.6.21)")
                                continue

                        if ( (db_ver not in db_ver_inc_map) and
                           (db_ver <= max_db_ver and db_ver >= min_db_ver) ):
                            # save the include directory with the db.h version
                            # (first occurrence only)
                            db_ver_inc_map[db_ver] = d
                            if db_setup_debug:
                                print("db.h: found", db_ver, "in", d)
                        else:
                            # we already found a header for this library version
                            if db_setup_debug: print("db.h: ignoring", d)
                    else:
                        # ignore this header, it didn't contain a version number
                        if db_setup_debug:
                            print("db.h: no version number version in", d)

            db_found_vers = sorted(db_ver_inc_map.keys())

            while db_found_vers:
                db_ver = db_found_vers.pop()
                db_incdir = db_ver_inc_map[db_ver]

                # check lib directories parallel to the location of the header
                db_dirs_to_check = [
                    db_incdir.replace("include", 'lib64'),
                    db_incdir.replace("include", 'lib'),
                ]
                db_dirs_to_check = [x for x in db_dirs_to_check if os.path.isdir(x)]

                # Look for a version specific db-X.Y before an ambiguoius dbX
                # XXX should we -ever- look for a dbX name?  Do any
                # systems really not name their library by version and
                # symlink to more general names?
                for dblib in (('db-%d.%d' % db_ver),
                              ('db%d%d' % db_ver),
                              ('db%d' % db_ver[0])):
                    dblib_file = self.compiler.find_library_file(
                                    db_dirs_to_check + lib_dirs, dblib )
                    if dblib_file:
                        dblib_dir = [ os.path.abspath(os.path.dirname(dblib_file)) ]
                        raise db_found
                    else:
                        if db_setup_debug: print("db lib: ", dblib, "not found")

        except db_found:
            if db_setup_debug:
                print("db lib: using", db_ver, dblib)
                print("db: lib dir", dblib_dir, "inc dir", db_incdir)
            db_incs = [db_incdir]
            dblibs = [dblib]
            # We add the runtime_library_dirs argument because the
            # BerkeleyDB lib we're linking against often isn't in the
            # system dynamic library search path.  This is usually
            # correct and most trouble free, but may cause problems in
            # some unusual system configurations (e.g. the directory
            # is on an NFS server that goes away).
            exts.append(Extension('_bsddb', ['_bsddb.c'],
                                  depends = ['bsddb.h'],
                                  library_dirs=dblib_dir,
                                  runtime_library_dirs=dblib_dir,
                                  include_dirs=db_incs,
                                  libraries=dblibs))
        else:
            if db_setup_debug: print("db: no appropriate library found")
            db_incs = None
            dblibs = []
            dblib_dir = None
            missing.append('_bsddb')

        # The sqlite interface
        sqlite_setup_debug = False   # verbose debug prints from this script?

        # We hunt for #define SQLITE_VERSION "n.n.n"
        # We need to find >= sqlite version 3.0.8
        sqlite_incdir = sqlite_libdir = None
        sqlite_inc_paths = [ '/usr/include',
                             '/usr/include/sqlite',
                             '/usr/include/sqlite3',
                             '/usr/local/include',
                             '/usr/local/include/sqlite',
                             '/usr/local/include/sqlite3',
                           ]
        MIN_SQLITE_VERSION_NUMBER = (3, 0, 8)
        MIN_SQLITE_VERSION = ".".join([str(x)
                                    for x in MIN_SQLITE_VERSION_NUMBER])

        # Scan the default include directories before the SQLite specific
        # ones. This allows one to override the copy of sqlite on OSX,
        # where /usr/include contains an old version of sqlite.
        for d in inc_dirs + sqlite_inc_paths:
            f = os.path.join(d, "sqlite3.h")
            if os.path.exists(f):
                if sqlite_setup_debug: print("sqlite: found %s"%f)
                incf = open(f).read()
                m = re.search(
                    r'\s*.*#\s*.*define\s.*SQLITE_VERSION\W*"(.*)"', incf)
                if m:
                    sqlite_version = m.group(1)
                    sqlite_version_tuple = tuple([int(x)
                                        for x in sqlite_version.split(".")])
                    if sqlite_version_tuple >= MIN_SQLITE_VERSION_NUMBER:
                        # we win!
                        if sqlite_setup_debug:
                            print("%s/sqlite3.h: version %s"%(d, sqlite_version))
                        sqlite_incdir = d
                        break
                    else:
                        if sqlite_setup_debug:
                            print("%s: version %d is too old, need >= %s"%(d,
                                        sqlite_version, MIN_SQLITE_VERSION))
                elif sqlite_setup_debug:
                    print("sqlite: %s had no SQLITE_VERSION"%(f,))

        if sqlite_incdir:
            sqlite_dirs_to_check = [
                os.path.join(sqlite_incdir, '..', 'lib64'),
                os.path.join(sqlite_incdir, '..', 'lib'),
                os.path.join(sqlite_incdir, '..', '..', 'lib64'),
                os.path.join(sqlite_incdir, '..', '..', 'lib'),
            ]
            sqlite_libfile = self.compiler.find_library_file(
                                sqlite_dirs_to_check + lib_dirs, 'sqlite3')
            sqlite_libdir = [os.path.abspath(os.path.dirname(sqlite_libfile))]

        if sqlite_incdir and sqlite_libdir:
            sqlite_srcs = ['_sqlite/cache.c',
                '_sqlite/connection.c',
                '_sqlite/cursor.c',
                '_sqlite/microprotocols.c',
                '_sqlite/module.c',
                '_sqlite/prepare_protocol.c',
                '_sqlite/row.c',
                '_sqlite/statement.c',
                '_sqlite/util.c', ]

            sqlite_defines = []
            if sys.platform != "win32":
                sqlite_defines.append(('MODULE_NAME', '"sqlite3"'))
            else:
                sqlite_defines.append(('MODULE_NAME', '\\"sqlite3\\"'))


            if sys.platform == 'darwin':
                # In every directory on the search path search for a dynamic
                # library and then a static library, instead of first looking
                # for dynamic libraries on the entiry path.
                # This way a staticly linked custom sqlite gets picked up
                # before the dynamic library in /usr/lib.
                sqlite_extra_link_args = ('-Wl,-search_paths_first',)
            else:
                sqlite_extra_link_args = ()

            exts.append(Extension('_sqlite3', sqlite_srcs,
                                  define_macros=sqlite_defines,
                                  include_dirs=["Modules/_sqlite",
                                                sqlite_incdir],
                                  library_dirs=sqlite_libdir,
                                  runtime_library_dirs=sqlite_libdir,
                                  extra_link_args=sqlite_extra_link_args,
                                  libraries=["sqlite3",]))
        else:
            missing.append('_sqlite3')

        # The standard Unix dbm module:
        if platform not in ['cygwin']:
            if find_file("ndbm.h", inc_dirs, []) is not None:
                # Some systems have -lndbm, others don't
                if self.compiler.find_library_file(lib_dirs, 'ndbm'):
                    ndbm_libs = ['ndbm']
                else:
                    ndbm_libs = []
                exts.append( Extension('dbm', ['dbmmodule.c'],
                                       define_macros=[('HAVE_NDBM_H',None)],
                                       libraries = ndbm_libs ) )
            elif (self.compiler.find_library_file(lib_dirs, 'gdbm')
                  and find_file("gdbm/ndbm.h", inc_dirs, []) is not None):
                exts.append( Extension('dbm', ['dbmmodule.c'],
                                       define_macros=[('HAVE_GDBM_NDBM_H',None)],
                                       libraries = ['gdbm'] ) )
            elif db_incs is not None:
                exts.append( Extension('dbm', ['dbmmodule.c'],
                                       library_dirs=dblib_dir,
                                       runtime_library_dirs=dblib_dir,
                                       include_dirs=db_incs,
                                       define_macros=[('HAVE_BERKDB_H',None),
                                                      ('DB_DBM_HSEARCH',None)],
                                       libraries=dblibs))
            else:
                missing.append('dbm')

        # Anthony Baxter's gdbm module.  GNU dbm(3) will require -lgdbm:
        if (self.compiler.find_library_file(lib_dirs, 'gdbm')):
            exts.append( Extension('gdbm', ['gdbmmodule.c'],
                                   libraries = ['gdbm'] ) )
        else:
            missing.append('gdbm')

        # Unix-only modules
        if platform not in ['mac', 'win32']:
            # Steen Lumholt's termios module
            exts.append( Extension('termios', ['termios.c']) )
            # Jeremy Hylton's rlimit interface
            if platform not in ['atheos']:
                exts.append( Extension('resource', ['resource.c']) )
            else:
                missing.append('resource')

            # Sun yellow pages. Some systems have the functions in libc.
            if platform not in ['cygwin', 'atheos']:
                if (self.compiler.find_library_file(lib_dirs, 'nsl')):
                    libs = ['nsl']
                else:
                    libs = []
                exts.append( Extension('nis', ['nismodule.c'],
                                       libraries = libs) )
            else:
                missing.append('nis')
        else:
            missing.extend(['nis', 'resource', 'termios'])

        # Curses support, requiring the System V version of curses, often
        # provided by the ncurses library.
        panel_library = 'panel'
        if (self.compiler.find_library_file(lib_dirs, 'ncursesw')):
            curses_libs = ['ncursesw']
            # Bug 1464056: If _curses.so links with ncursesw,
            # _curses_panel.so must link with panelw.
            panel_library = 'panelw'
            exts.append( Extension('_curses', ['_cursesmodule.c'],
                                   libraries = curses_libs) )
        elif (self.compiler.find_library_file(lib_dirs, 'ncurses')):
            curses_libs = ['ncurses']
            exts.append( Extension('_curses', ['_cursesmodule.c'],
                                   libraries = curses_libs) )
        elif (self.compiler.find_library_file(lib_dirs, 'curses')
              and platform != 'darwin'):
                # OSX has an old Berkeley curses, not good enough for
                # the _curses module.
            if (self.compiler.find_library_file(lib_dirs, 'terminfo')):
                curses_libs = ['curses', 'terminfo']
            elif (self.compiler.find_library_file(lib_dirs, 'termcap')):
                curses_libs = ['curses', 'termcap']
            else:
                curses_libs = ['curses']

            exts.append( Extension('_curses', ['_cursesmodule.c'],
                                   libraries = curses_libs) )
        else:
            missing.append('_curses')

        # If the curses module is enabled, check for the panel module
        if (module_enabled(exts, '_curses') and
            self.compiler.find_library_file(lib_dirs, panel_library)):
            exts.append( Extension('_curses_panel', ['_curses_panel.c'],
                                   libraries = [panel_library] + curses_libs) )
        else:
            missing.append('_curses_panel')

        # Andrew Kuchling's zlib module.  Note that some versions of zlib
        # 1.1.3 have security problems.  See CERT Advisory CA-2002-07:
        # http://www.cert.org/advisories/CA-2002-07.html
        #
        # zlib 1.1.4 is fixed, but at least one vendor (RedHat) has decided to
        # patch its zlib 1.1.3 package instead of upgrading to 1.1.4.  For
        # now, we still accept 1.1.3, because we think it's difficult to
        # exploit this in Python, and we'd rather make it RedHat's problem
        # than our problem <wink>.
        #
        # You can upgrade zlib to version 1.1.4 yourself by going to
        # http://www.gzip.org/zlib/
        zlib_inc = find_file('zlib.h', [], inc_dirs)
        if zlib_inc is not None:
            zlib_h = zlib_inc[0] + '/zlib.h'
            version = '"0.0.0"'
            version_req = '"1.1.3"'
            fp = open(zlib_h)
            while 1:
                line = fp.readline()
                if not line:
                    break
                if line.startswith('#define ZLIB_VERSION'):
                    version = line.split()[2]
                    break
            if version >= version_req:
                if (self.compiler.find_library_file(lib_dirs, 'z')):
                    if sys.platform == "darwin":
                        zlib_extra_link_args = ('-Wl,-search_paths_first',)
                    else:
                        zlib_extra_link_args = ()
                    exts.append( Extension('zlib', ['zlibmodule.c'],
                                           libraries = ['z'],
                                           extra_link_args = zlib_extra_link_args))
                else:
                    missing.append('zlib')
            else:
                missing.append('zlib')
        else:
            missing.append('zlib')

        # Gustavo Niemeyer's bz2 module.
        if (self.compiler.find_library_file(lib_dirs, 'bz2')):
            if sys.platform == "darwin":
                bz2_extra_link_args = ('-Wl,-search_paths_first',)
            else:
                bz2_extra_link_args = ()
            exts.append( Extension('bz2', ['bz2module.c'],
                                   libraries = ['bz2'],
                                   extra_link_args = bz2_extra_link_args) )
        else:
            missing.append('bz2')

        # Interface to the Expat XML parser
        #
        # Expat was written by James Clark and is now maintained by a
        # group of developers on SourceForge; see www.libexpat.org for
        # more information.  The pyexpat module was written by Paul
        # Prescod after a prototype by Jack Jansen.  The Expat source
        # is included in Modules/expat/.  Usage of a system
        # shared libexpat.so/expat.dll is not advised.
        #
        # More information on Expat can be found at www.libexpat.org.
        #
        expatinc = os.path.join(os.getcwd(), srcdir, 'Modules', 'expat')
        define_macros = [
            ('HAVE_EXPAT_CONFIG_H', '1'),
        ]

        exts.append(Extension('pyexpat',
                              define_macros = define_macros,
                              include_dirs = [expatinc],
                              sources = ['pyexpat.c',
                                         'expat/xmlparse.c',
                                         'expat/xmlrole.c',
                                         'expat/xmltok.c',
                                         ],
                              ))

        # Fredrik Lundh's cElementTree module.  Note that this also
        # uses expat (via the CAPI hook in pyexpat).

        if os.path.isfile(os.path.join(srcdir, 'Modules', '_elementtree.c')):
            define_macros.append(('USE_PYEXPAT_CAPI', None))
            exts.append(Extension('_elementtree',
                                  define_macros = define_macros,
                                  include_dirs = [expatinc],
                                  sources = ['_elementtree.c'],
                                  ))
        else:
            missing.append('_elementtree')

        # Hye-Shik Chang's CJKCodecs modules.
        exts.append(Extension('_multibytecodec',
                              ['cjkcodecs/multibytecodec.c']))
        for loc in ('kr', 'jp', 'cn', 'tw', 'hk', 'iso2022'):
            exts.append(Extension('_codecs_%s' % loc,
                                  ['cjkcodecs/_codecs_%s.c' % loc]))

        # Dynamic loading module
        if sys.maxsize == 0x7fffffff:
            # This requires sizeof(int) == sizeof(long) == sizeof(char*)
            dl_inc = find_file('dlfcn.h', [], inc_dirs)
            if (dl_inc is not None) and (platform not in ['atheos']):
                exts.append( Extension('dl', ['dlmodule.c']) )
            else:
                missing.append('dl')
        else:
            missing.append('dl')

        # Thomas Heller's _ctypes module
        self.detect_ctypes(inc_dirs, lib_dirs)

        # _fileio -- supposedly cross platform
        exts.append(Extension('_fileio', ['_fileio.c']))

        # Platform-specific libraries
        if platform in ('linux2', 'freebsd4', 'freebsd5', 'freebsd6',
                        'freebsd7', 'freebsd8'):
            exts.append( Extension('ossaudiodev', ['ossaudiodev.c']) )
        else:
            missing.append('ossaudiodev')

        if platform == 'darwin' and ("--disable-toolbox-glue" not in
                sysconfig.get_config_var("CONFIG_ARGS")):

            if os.uname()[2] > '8.':
                # We're on Mac OS X 10.4 or later, the compiler should
                # support '-Wno-deprecated-declarations'. This will
                # surpress deprecation warnings for the Carbon extensions,
                # these extensions wrap the Carbon APIs and even those
                # parts that are deprecated.
                carbon_extra_compile_args = ['-Wno-deprecated-declarations']
            else:
                carbon_extra_compile_args = []

            # Mac OS X specific modules.
            def macSrcExists(name1, name2=''):
                if not name1:
                    return None
                names = (name1,)
                if name2:
                    names = (name1, name2)
                path = os.path.join(srcdir, 'Mac', 'Modules', *names)
                return os.path.exists(path)

            def addMacExtension(name, kwds, extra_srcs=[]):
                dirname = ''
                if name[0] == '_':
                    dirname = name[1:].lower()
                cname = name + '.c'
                cmodulename = name + 'module.c'
                # Check for NNN.c, NNNmodule.c, _nnn/NNN.c, _nnn/NNNmodule.c
                if macSrcExists(cname):
                    srcs = [cname]
                elif macSrcExists(cmodulename):
                    srcs = [cmodulename]
                elif macSrcExists(dirname, cname):
                    # XXX(nnorwitz): If all the names ended with module, we
                    # wouldn't need this condition.  ibcarbon is the only one.
                    srcs = [os.path.join(dirname, cname)]
                elif macSrcExists(dirname, cmodulename):
                    srcs = [os.path.join(dirname, cmodulename)]
                else:
                    raise RuntimeError("%s not found" % name)

                # Here's the whole point:  add the extension with sources
                exts.append(Extension(name, srcs + extra_srcs, **kwds))

            # Core Foundation
            core_kwds = {'extra_compile_args': carbon_extra_compile_args,
                         'extra_link_args': ['-framework', 'CoreFoundation'],
                        }
            addMacExtension('_CF', core_kwds, ['cf/pycfbridge.c'])
            addMacExtension('autoGIL', core_kwds)

            # Carbon
            carbon_kwds = {'extra_compile_args': carbon_extra_compile_args,
                           'extra_link_args': ['-framework', 'Carbon'],
                          }
            CARBON_EXTS = ['ColorPicker', 'gestalt', 'MacOS', 'Nav',
                           'OSATerminology', 'icglue',
                           # All these are in subdirs
                           '_AE', '_AH', '_App', '_CarbonEvt', '_Cm', '_Ctl',
                           '_Dlg', '_Drag', '_Evt', '_File', '_Folder', '_Fm',
                           '_Help', '_Icn', '_IBCarbon', '_List',
                           '_Menu', '_Mlte', '_OSA', '_Res', '_Qd', '_Qdoffs',
                           '_Scrap', '_Snd', '_TE', '_Win',
                          ]
            for name in CARBON_EXTS:
                addMacExtension(name, carbon_kwds)

            # Application Services & QuickTime
            app_kwds = {'extra_compile_args': carbon_extra_compile_args,
                        'extra_link_args': ['-framework','ApplicationServices'],
                       }
            addMacExtension('_Launch', app_kwds)
            addMacExtension('_CG', app_kwds)

            exts.append( Extension('_Qt', ['qt/_Qtmodule.c'],
                        extra_compile_args=carbon_extra_compile_args,
                        extra_link_args=['-framework', 'QuickTime',
                                     '-framework', 'Carbon']) )


        self.extensions.extend(exts)

        # Call the method for detecting whether _tkinter can be compiled
        self.detect_tkinter(inc_dirs, lib_dirs)

        if '_tkinter' not in [e.name for e in self.extensions]:
            missing.append('_tkinter')

        return missing

    def detect_tkinter_darwin(self, inc_dirs, lib_dirs):
        # The _tkinter module, using frameworks. Since frameworks are quite
        # different the UNIX search logic is not sharable.
        from os.path import join, exists
        framework_dirs = [
            '/System/Library/Frameworks/',
            '/Library/Frameworks',
            join(os.getenv('HOME'), '/Library/Frameworks')
        ]

        # Find the directory that contains the Tcl.framework and Tk.framework
        # bundles.
        # XXX distutils should support -F!
        for F in framework_dirs:
            # both Tcl.framework and Tk.framework should be present
            for fw in 'Tcl', 'Tk':
                if not exists(join(F, fw + '.framework')):
                    break
            else:
                # ok, F is now directory with both frameworks. Continure
                # building
                break
        else:
            # Tk and Tcl frameworks not found. Normal "unix" tkinter search
            # will now resume.
            return 0

        # For 8.4a2, we must add -I options that point inside the Tcl and Tk
        # frameworks. In later release we should hopefully be able to pass
        # the -F option to gcc, which specifies a framework lookup path.
        #
        include_dirs = [
            join(F, fw + '.framework', H)
            for fw in ('Tcl', 'Tk')
            for H in ('Headers', 'Versions/Current/PrivateHeaders')
        ]

        # For 8.4a2, the X11 headers are not included. Rather than include a
        # complicated search, this is a hard-coded path. It could bail out
        # if X11 libs are not found...
        include_dirs.append('/usr/X11R6/include')
        frameworks = ['-framework', 'Tcl', '-framework', 'Tk']

        ext = Extension('_tkinter', ['_tkinter.c', 'tkappinit.c'],
                        define_macros=[('WITH_APPINIT', 1)],
                        include_dirs = include_dirs,
                        libraries = [],
                        extra_compile_args = frameworks,
                        extra_link_args = frameworks,
                        )
        self.extensions.append(ext)
        return 1


    def detect_tkinter(self, inc_dirs, lib_dirs):
        # The _tkinter module.

        # Rather than complicate the code below, detecting and building
        # AquaTk is a separate method. Only one Tkinter will be built on
        # Darwin - either AquaTk, if it is found, or X11 based Tk.
        platform = self.get_platform()
        if (platform == 'darwin' and
            self.detect_tkinter_darwin(inc_dirs, lib_dirs)):
            return

        # Assume we haven't found any of the libraries or include files
        # The versions with dots are used on Unix, and the versions without
        # dots on Windows, for detection by cygwin.
        tcllib = tklib = tcl_includes = tk_includes = None
        for version in ['8.5', '85', '8.4', '84', '8.3', '83', '8.2',
                        '82', '8.1', '81', '8.0', '80']:
            tklib = self.compiler.find_library_file(lib_dirs, 'tk' + version)
            tcllib = self.compiler.find_library_file(lib_dirs, 'tcl' + version)
            if tklib and tcllib:
                # Exit the loop when we've found the Tcl/Tk libraries
                break

        # Now check for the header files
        if tklib and tcllib:
            # Check for the include files on Debian and {Free,Open}BSD, where
            # they're put in /usr/include/{tcl,tk}X.Y
            dotversion = version
            if '.' not in dotversion and "bsd" in sys.platform.lower():
                # OpenBSD and FreeBSD use Tcl/Tk library names like libtcl83.a,
                # but the include subdirs are named like .../include/tcl8.3.
                dotversion = dotversion[:-1] + '.' + dotversion[-1]
            tcl_include_sub = []
            tk_include_sub = []
            for dir in inc_dirs:
                tcl_include_sub += [dir + os.sep + "tcl" + dotversion]
                tk_include_sub += [dir + os.sep + "tk" + dotversion]
            tk_include_sub += tcl_include_sub
            tcl_includes = find_file('tcl.h', inc_dirs, tcl_include_sub)
            tk_includes = find_file('tk.h', inc_dirs, tk_include_sub)

        if (tcllib is None or tklib is None or
            tcl_includes is None or tk_includes is None):
            self.announce("INFO: Can't locate Tcl/Tk libs and/or headers", 2)
            return

        # OK... everything seems to be present for Tcl/Tk.

        include_dirs = [] ; libs = [] ; defs = [] ; added_lib_dirs = []
        for dir in tcl_includes + tk_includes:
            if dir not in include_dirs:
                include_dirs.append(dir)

        # Check for various platform-specific directories
        if platform == 'sunos5':
            include_dirs.append('/usr/openwin/include')
            added_lib_dirs.append('/usr/openwin/lib')
        elif os.path.exists('/usr/X11R6/include'):
            include_dirs.append('/usr/X11R6/include')
            added_lib_dirs.append('/usr/X11R6/lib64')
            added_lib_dirs.append('/usr/X11R6/lib')
        elif os.path.exists('/usr/X11R5/include'):
            include_dirs.append('/usr/X11R5/include')
            added_lib_dirs.append('/usr/X11R5/lib')
        else:
            # Assume default location for X11
            include_dirs.append('/usr/X11/include')
            added_lib_dirs.append('/usr/X11/lib')

        # If Cygwin, then verify that X is installed before proceeding
        if platform == 'cygwin':
            x11_inc = find_file('X11/Xlib.h', [], include_dirs)
            if x11_inc is None:
                return

        # Check for BLT extension
        if self.compiler.find_library_file(lib_dirs + added_lib_dirs,
                                           'BLT8.0'):
            defs.append( ('WITH_BLT', 1) )
            libs.append('BLT8.0')
        elif self.compiler.find_library_file(lib_dirs + added_lib_dirs,
                                           'BLT'):
            defs.append( ('WITH_BLT', 1) )
            libs.append('BLT')

        # Add the Tcl/Tk libraries
        libs.append('tk'+ version)
        libs.append('tcl'+ version)

        if platform in ['aix3', 'aix4']:
            libs.append('ld')

        # Finally, link with the X11 libraries (not appropriate on cygwin)
        if platform != "cygwin":
            libs.append('X11')

        ext = Extension('_tkinter', ['_tkinter.c', 'tkappinit.c'],
                        define_macros=[('WITH_APPINIT', 1)] + defs,
                        include_dirs = include_dirs,
                        libraries = libs,
                        library_dirs = added_lib_dirs,
                        )
        self.extensions.append(ext)

##         # Uncomment these lines if you want to play with xxmodule.c
##         ext = Extension('xx', ['xxmodule.c'])
##         self.extensions.append(ext)

        # XXX handle these, but how to detect?
        # *** Uncomment and edit for PIL (TkImaging) extension only:
        #       -DWITH_PIL -I../Extensions/Imaging/libImaging  tkImaging.c \
        # *** Uncomment and edit for TOGL extension only:
        #       -DWITH_TOGL togl.c \
        # *** Uncomment these for TOGL extension only:
        #       -lGL -lGLU -lXext -lXmu \

    def configure_ctypes(self, ext):
        if not self.use_system_libffi:
            (srcdir,) = sysconfig.get_config_vars('srcdir')
            ffi_builddir = os.path.join(self.build_temp, 'libffi')
            ffi_srcdir = os.path.abspath(os.path.join(srcdir, 'Modules',
                                         '_ctypes', 'libffi'))
            ffi_configfile = os.path.join(ffi_builddir, 'fficonfig.py')

            from distutils.dep_util import newer_group

            config_sources = [os.path.join(ffi_srcdir, fname)
                              for fname in os.listdir(ffi_srcdir)
                              if os.path.isfile(os.path.join(ffi_srcdir, fname))]
            if self.force or newer_group(config_sources,
                                         ffi_configfile):
                from distutils.dir_util import mkpath
                mkpath(ffi_builddir)
                config_args = []

                # Pass empty CFLAGS because we'll just append the resulting
                # CFLAGS to Python's; -g or -O2 is to be avoided.
                cmd = "cd %s && env CFLAGS='' '%s/configure' %s" \
                      % (ffi_builddir, ffi_srcdir, " ".join(config_args))

                res = os.system(cmd)
                if res or not os.path.exists(ffi_configfile):
                    print("Failed to configure _ctypes module")
                    return False

            fficonfig = {}
            fp = open(ffi_configfile)
            try:
                script = fp.read()
            finally:
                fp.close()
            exec(script, globals(), fficonfig)
            ffi_srcdir = os.path.join(fficonfig['ffi_srcdir'], 'src')

            # Add .S (preprocessed assembly) to C compiler source extensions.
            self.compiler.src_extensions.append('.S')

            include_dirs = [os.path.join(ffi_builddir, 'include'),
                            ffi_builddir, ffi_srcdir]
            extra_compile_args = fficonfig['ffi_cflags'].split()

            ext.sources.extend(fficonfig['ffi_sources'])
            ext.include_dirs.extend(include_dirs)
            ext.extra_compile_args.extend(extra_compile_args)
        return True

    def detect_ctypes(self, inc_dirs, lib_dirs):
        self.use_system_libffi = False
        include_dirs = []
        extra_compile_args = []
        extra_link_args = []
        sources = ['_ctypes/_ctypes.c',
                   '_ctypes/callbacks.c',
                   '_ctypes/callproc.c',
                   '_ctypes/stgdict.c',
                   '_ctypes/cfield.c',
                   '_ctypes/malloc_closure.c']
        depends = ['_ctypes/ctypes.h']

        if sys.platform == 'darwin':
            sources.append('_ctypes/darwin/dlfcn_simple.c')
            include_dirs.append('_ctypes/darwin')
# XXX Is this still needed?
##            extra_link_args.extend(['-read_only_relocs', 'warning'])

        elif sys.platform == 'sunos5':
            # XXX This shouldn't be necessary; it appears that some
            # of the assembler code is non-PIC (i.e. it has relocations
            # when it shouldn't. The proper fix would be to rewrite
            # the assembler code to be PIC.
            # This only works with GCC; the Sun compiler likely refuses
            # this option. If you want to compile ctypes with the Sun
            # compiler, please research a proper solution, instead of
            # finding some -z option for the Sun compiler.
            extra_link_args.append('-mimpure-text')

        ext = Extension('_ctypes',
                        include_dirs=include_dirs,
                        extra_compile_args=extra_compile_args,
                        extra_link_args=extra_link_args,
                        libraries=[],
                        sources=sources,
                        depends=depends)
        ext_test = Extension('_ctypes_test',
                             sources=['_ctypes/_ctypes_test.c'])
        self.extensions.extend([ext, ext_test])

        if not '--with-system-ffi' in sysconfig.get_config_var("CONFIG_ARGS"):
            return

        ffi_inc = find_file('ffi.h', [], inc_dirs)
        if ffi_inc is not None:
            ffi_h = ffi_inc[0] + '/ffi.h'
            fp = open(ffi_h)
            while 1:
                line = fp.readline()
                if not line:
                    ffi_inc = None
                    break
                if line.startswith('#define LIBFFI_H'):
                    break
        ffi_lib = None
        if ffi_inc is not None:
            for lib_name in ('ffi_convenience', 'ffi_pic', 'ffi'):
                if (self.compiler.find_library_file(lib_dirs, lib_name)):
                    ffi_lib = lib_name
                    break

        if ffi_inc and ffi_lib:
            ext.include_dirs.extend(ffi_inc)
            ext.libraries.append(ffi_lib)
            self.use_system_libffi = True


class PyBuildInstall(install):
    # Suppress the warning about installation into the lib_dynload
    # directory, which is not in sys.path when running Python during
    # installation:
    def initialize_options (self):
        install.initialize_options(self)
        self.warn_dir=0

class PyBuildInstallLib(install_lib):
    # Do exactly what install_lib does but make sure correct access modes get
    # set on installed directories and files. All installed files with get
    # mode 644 unless they are a shared library in which case they will get
    # mode 755. All installed directories will get mode 755.

    so_ext = sysconfig.get_config_var("SO")

    def install(self):
        outfiles = install_lib.install(self)
        self.set_file_modes(outfiles, 0o644, 0o755)
        self.set_dir_modes(self.install_dir, 0o755)
        return outfiles

    def set_file_modes(self, files, defaultMode, sharedLibMode):
        if not self.is_chmod_supported(): return
        if not files: return

        for filename in files:
            if os.path.islink(filename): continue
            mode = defaultMode
            if filename.endswith(self.so_ext): mode = sharedLibMode
            log.info("changing mode of %s to %o", filename, mode)
            if not self.dry_run: os.chmod(filename, mode)

    def set_dir_modes(self, dirname, mode):
        if not self.is_chmod_supported(): return
        os.path.walk(dirname, self.set_dir_modes_visitor, mode)

    def set_dir_modes_visitor(self, mode, dirname, names):
        if os.path.islink(dirname): return
        log.info("changing mode of %s to %o", dirname, mode)
        if not self.dry_run: os.chmod(dirname, mode)

    def is_chmod_supported(self):
        return hasattr(os, 'chmod')

SUMMARY = """
Python is an interpreted, interactive, object-oriented programming
language. It is often compared to Tcl, Perl, Scheme or Java.

Python combines remarkable power with very clear syntax. It has
modules, classes, exceptions, very high level dynamic data types, and
dynamic typing. There are interfaces to many system calls and
libraries, as well as to various windowing systems (X11, Motif, Tk,
Mac, MFC). New built-in modules are easily written in C or C++. Python
is also usable as an extension language for applications that need a
programmable interface.

The Python implementation is portable: it runs on many brands of UNIX,
on Windows, DOS, OS/2, Mac, Amiga... If your favorite system isn't
listed here, it may still be supported, if there's a C compiler for
it. Ask around on comp.lang.python -- or just try compiling Python
yourself.
"""

CLASSIFIERS = """
Development Status :: 3 - Alpha
Development Status :: 6 - Mature
License :: OSI Approved :: Python Software Foundation License
Natural Language :: English
Programming Language :: C
Programming Language :: Python
Topic :: Software Development
"""

def main():
    # turn off warnings when deprecated modules are imported
    import warnings
    warnings.filterwarnings("ignore",category=DeprecationWarning)
    setup(# PyPI Metadata (PEP 301)
          name = "Python",
          version = sys.version.split()[0],
          url = "http://www.python.org/%s" % sys.version[:3],
          maintainer = "Guido van Rossum and the Python community",
          maintainer_email = "python-dev@python.org",
          description = "A high-level object-oriented programming language",
          long_description = SUMMARY.strip(),
          license = "PSF license",
          classifiers = [x for x in CLASSIFIERS.split("\n") if x],
          platforms = ["Many"],

          # Build info
          cmdclass = {'build_ext':PyBuildExt, 'install':PyBuildInstall,
                      'install_lib':PyBuildInstallLib},
          # The struct module is defined here, because build_ext won't be
          # called unless there's at least one extension module defined.
          ext_modules=[Extension('_struct', ['_struct.c'])],

          # Scripts to install
          scripts = ['Tools/scripts/pydoc', 'Tools/scripts/idle',
                     'Lib/smtpd.py']
        )

# --install-platlib
if __name__ == '__main__':
    main()