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
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
|
"""SCons.Environment
Base class for construction Environments. These are
the primary objects used to communicate dependency and
construction information to the build engine.
Keyword arguments supplied when the construction Environment
is created are construction variables used to initialize the
Environment
"""
#
# __COPYRIGHT__
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
import copy
import os
import sys
import re
import shlex
from collections import UserDict
import SCons.Action
import SCons.Builder
from SCons.Debug import logInstanceCreation
import SCons.Defaults
import SCons.Errors
import SCons.Memoize
import SCons.Node
import SCons.Node.Alias
import SCons.Node.FS
import SCons.Node.Python
import SCons.Platform
import SCons.SConf
import SCons.SConsign
import SCons.Subst
import SCons.Tool
import SCons.Util
import SCons.Warnings
class _Null(object):
pass
_null = _Null
_warn_copy_deprecated = True
_warn_source_signatures_deprecated = True
_warn_target_signatures_deprecated = True
CleanTargets = {}
CalculatorArgs = {}
semi_deepcopy = SCons.Util.semi_deepcopy
semi_deepcopy_dict = SCons.Util.semi_deepcopy_dict
# Pull UserError into the global name space for the benefit of
# Environment().SourceSignatures(), which has some import statements
# which seem to mess up its ability to reference SCons directly.
UserError = SCons.Errors.UserError
def alias_builder(env, target, source):
pass
AliasBuilder = SCons.Builder.Builder(action = alias_builder,
target_factory = SCons.Node.Alias.default_ans.Alias,
source_factory = SCons.Node.FS.Entry,
multi = 1,
is_explicit = None,
name='AliasBuilder')
def apply_tools(env, tools, toolpath):
# Store the toolpath in the Environment.
if toolpath is not None:
env['toolpath'] = toolpath
if not tools:
return
# Filter out null tools from the list.
for tool in [_f for _f in tools if _f]:
if SCons.Util.is_List(tool) or isinstance(tool, tuple):
toolname = tool[0]
toolargs = tool[1] # should be a dict of kw args
tool = env.Tool(toolname, **toolargs)
else:
env.Tool(tool)
# These names are (or will be) controlled by SCons; users should never
# set or override them. This warning can optionally be turned off,
# but scons will still ignore the illegal variable names even if it's off.
reserved_construction_var_names = [
'CHANGED_SOURCES',
'CHANGED_TARGETS',
'SOURCE',
'SOURCES',
'TARGET',
'TARGETS',
'UNCHANGED_SOURCES',
'UNCHANGED_TARGETS',
]
future_reserved_construction_var_names = [
#'HOST_OS',
#'HOST_ARCH',
#'HOST_CPU',
]
def copy_non_reserved_keywords(dict):
result = semi_deepcopy(dict)
for k in result.keys():
if k in reserved_construction_var_names:
msg = "Ignoring attempt to set reserved variable `$%s'"
SCons.Warnings.warn(SCons.Warnings.ReservedVariableWarning, msg % k)
del result[k]
return result
def _set_reserved(env, key, value):
msg = "Ignoring attempt to set reserved variable `$%s'"
SCons.Warnings.warn(SCons.Warnings.ReservedVariableWarning, msg % key)
def _set_future_reserved(env, key, value):
env._dict[key] = value
msg = "`$%s' will be reserved in a future release and setting it will become ignored"
SCons.Warnings.warn(SCons.Warnings.FutureReservedVariableWarning, msg % key)
def _set_BUILDERS(env, key, value):
try:
bd = env._dict[key]
for k in bd.keys():
del bd[k]
except KeyError:
bd = BuilderDict(kwbd, env)
env._dict[key] = bd
for k, v in value.items():
if not SCons.Builder.is_a_Builder(v):
raise SCons.Errors.UserError('%s is not a Builder.' % repr(v))
bd.update(value)
def _del_SCANNERS(env, key):
del env._dict[key]
env.scanner_map_delete()
def _set_SCANNERS(env, key, value):
env._dict[key] = value
env.scanner_map_delete()
def _delete_duplicates(l, keep_last):
"""Delete duplicates from a sequence, keeping the first or last."""
seen={}
result=[]
if keep_last: # reverse in & out, then keep first
l.reverse()
for i in l:
try:
if i not in seen:
result.append(i)
seen[i]=1
except TypeError:
# probably unhashable. Just keep it.
result.append(i)
if keep_last:
result.reverse()
return result
# The following is partly based on code in a comment added by Peter
# Shannon at the following page (there called the "transplant" class):
#
# ASPN : Python Cookbook : Dynamically added methods to a class
# http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/81732
#
# We had independently been using the idiom as BuilderWrapper, but
# factoring out the common parts into this base class, and making
# BuilderWrapper a subclass that overrides __call__() to enforce specific
# Builder calling conventions, simplified some of our higher-layer code.
class MethodWrapper(object):
"""
A generic Wrapper class that associates a method (which can
actually be any callable) with an object. As part of creating this
MethodWrapper object an attribute with the specified (by default,
the name of the supplied method) is added to the underlying object.
When that new "method" is called, our __call__() method adds the
object as the first argument, simulating the Python behavior of
supplying "self" on method calls.
We hang on to the name by which the method was added to the underlying
base class so that we can provide a method to "clone" ourselves onto
a new underlying object being copied (without which we wouldn't need
to save that info).
"""
def __init__(self, object, method, name=None):
if name is None:
name = method.__name__
self.object = object
self.method = method
self.name = name
setattr(self.object, name, self)
def __call__(self, *args, **kwargs):
nargs = (self.object,) + args
return self.method(*nargs, **kwargs)
def clone(self, new_object):
"""
Returns an object that re-binds the underlying "method" to
the specified new object.
"""
return self.__class__(new_object, self.method, self.name)
class BuilderWrapper(MethodWrapper):
"""
A MethodWrapper subclass that that associates an environment with
a Builder.
This mainly exists to wrap the __call__() function so that all calls
to Builders can have their argument lists massaged in the same way
(treat a lone argument as the source, treat two arguments as target
then source, make sure both target and source are lists) without
having to have cut-and-paste code to do it.
As a bit of obsessive backwards compatibility, we also intercept
attempts to get or set the "env" or "builder" attributes, which were
the names we used before we put the common functionality into the
MethodWrapper base class. We'll keep this around for a while in case
people shipped Tool modules that reached into the wrapper (like the
Tool/qt.py module does, or did). There shouldn't be a lot attribute
fetching or setting on these, so a little extra work shouldn't hurt.
"""
def __call__(self, target=None, source=_null, *args, **kw):
if source is _null:
source = target
target = None
if target is not None and not SCons.Util.is_List(target):
target = [target]
if source is not None and not SCons.Util.is_List(source):
source = [source]
return MethodWrapper.__call__(self, target, source, *args, **kw)
def __repr__(self):
return '<BuilderWrapper %s>' % repr(self.name)
def __str__(self):
return self.__repr__()
def __getattr__(self, name):
if name == 'env':
return self.object
elif name == 'builder':
return self.method
else:
raise AttributeError(name)
def __setattr__(self, name, value):
if name == 'env':
self.object = value
elif name == 'builder':
self.method = value
else:
self.__dict__[name] = value
# This allows a Builder to be executed directly
# through the Environment to which it's attached.
# In practice, we shouldn't need this, because
# builders actually get executed through a Node.
# But we do have a unit test for this, and can't
# yet rule out that it would be useful in the
# future, so leave it for now.
#def execute(self, **kw):
# kw['env'] = self.env
# self.builder.execute(**kw)
class BuilderDict(UserDict):
"""This is a dictionary-like class used by an Environment to hold
the Builders. We need to do this because every time someone changes
the Builders in the Environment's BUILDERS dictionary, we must
update the Environment's attributes."""
def __init__(self, dict, env):
# Set self.env before calling the superclass initialization,
# because it will end up calling our other methods, which will
# need to point the values in this dictionary to self.env.
self.env = env
UserDict.__init__(self, dict)
def __semi_deepcopy__(self):
# These cannot be copied since they would both modify the same builder object, and indeed
# just copying would modify the original builder
raise TypeError( 'cannot semi_deepcopy a BuilderDict' )
def __setitem__(self, item, val):
try:
method = getattr(self.env, item).method
except AttributeError:
pass
else:
self.env.RemoveMethod(method)
UserDict.__setitem__(self, item, val)
BuilderWrapper(self.env, val, item)
def __delitem__(self, item):
UserDict.__delitem__(self, item)
delattr(self.env, item)
def update(self, dict):
for i, v in dict.items():
self.__setitem__(i, v)
_is_valid_var = re.compile(r'[_a-zA-Z]\w*$')
def is_valid_construction_var(varstr):
"""Return if the specified string is a legitimate construction
variable.
"""
return _is_valid_var.match(varstr)
class SubstitutionEnvironment(object):
"""Base class for different flavors of construction environments.
This class contains a minimal set of methods that handle contruction
variable expansion and conversion of strings to Nodes, which may or
may not be actually useful as a stand-alone class. Which methods
ended up in this class is pretty arbitrary right now. They're
basically the ones which we've empirically determined are common to
the different construction environment subclasses, and most of the
others that use or touch the underlying dictionary of construction
variables.
Eventually, this class should contain all the methods that we
determine are necessary for a "minimal" interface to the build engine.
A full "native Python" SCons environment has gotten pretty heavyweight
with all of the methods and Tools and construction variables we've
jammed in there, so it would be nice to have a lighter weight
alternative for interfaces that don't need all of the bells and
whistles. (At some point, we'll also probably rename this class
"Base," since that more reflects what we want this class to become,
but because we've released comments that tell people to subclass
Environment.Base to create their own flavors of construction
environment, we'll save that for a future refactoring when this
class actually becomes useful.)
"""
if SCons.Memoize.use_memoizer:
__metaclass__ = SCons.Memoize.Memoized_Metaclass
def __init__(self, **kw):
"""Initialization of an underlying SubstitutionEnvironment class.
"""
if __debug__: logInstanceCreation(self, 'Environment.SubstitutionEnvironment')
self.fs = SCons.Node.FS.get_default_fs()
self.ans = SCons.Node.Alias.default_ans
self.lookup_list = SCons.Node.arg2nodes_lookups
self._dict = kw.copy()
self._init_special()
self.added_methods = []
#self._memo = {}
def _init_special(self):
"""Initial the dispatch tables for special handling of
special construction variables."""
self._special_del = {}
self._special_del['SCANNERS'] = _del_SCANNERS
self._special_set = {}
for key in reserved_construction_var_names:
self._special_set[key] = _set_reserved
for key in future_reserved_construction_var_names:
self._special_set[key] = _set_future_reserved
self._special_set['BUILDERS'] = _set_BUILDERS
self._special_set['SCANNERS'] = _set_SCANNERS
# Freeze the keys of self._special_set in a list for use by
# methods that need to check. (Empirically, list scanning has
# gotten better than dict.has_key() in Python 2.5.)
self._special_set_keys = list(self._special_set.keys())
def __cmp__(self, other):
return cmp(self._dict, other._dict)
def __delitem__(self, key):
special = self._special_del.get(key)
if special:
special(self, key)
else:
del self._dict[key]
def __getitem__(self, key):
return self._dict[key]
def __setitem__(self, key, value):
# This is heavily used. This implementation is the best we have
# according to the timings in bench/env.__setitem__.py.
#
# The "key in self._special_set_keys" test here seems to perform
# pretty well for the number of keys we have. A hard-coded
# list works a little better in Python 2.5, but that has the
# disadvantage of maybe getting out of sync if we ever add more
# variable names. Using self._special_set.has_key() works a
# little better in Python 2.4, but is worse than this test.
# So right now it seems like a good trade-off, but feel free to
# revisit this with bench/env.__setitem__.py as needed (and
# as newer versions of Python come out).
if key in self._special_set_keys:
self._special_set[key](self, key, value)
else:
# If we already have the entry, then it's obviously a valid
# key and we don't need to check. If we do check, using a
# global, pre-compiled regular expression directly is more
# efficient than calling another function or a method.
if key not in self._dict \
and not _is_valid_var.match(key):
raise SCons.Errors.UserError("Illegal construction variable `%s'" % key)
self._dict[key] = value
def get(self, key, default=None):
"""Emulates the get() method of dictionaries."""
return self._dict.get(key, default)
def has_key(self, key):
return key in self._dict
def __contains__(self, key):
return self._dict.__contains__(key)
def items(self):
return list(self._dict.items())
def arg2nodes(self, args, node_factory=_null, lookup_list=_null, **kw):
if node_factory is _null:
node_factory = self.fs.File
if lookup_list is _null:
lookup_list = self.lookup_list
if not args:
return []
args = SCons.Util.flatten(args)
nodes = []
for v in args:
if SCons.Util.is_String(v):
n = None
for l in lookup_list:
n = l(v)
if n is not None:
break
if n is not None:
if SCons.Util.is_String(n):
# n = self.subst(n, raw=1, **kw)
kw['raw'] = 1
n = self.subst(n, **kw)
if node_factory:
n = node_factory(n)
if SCons.Util.is_List(n):
nodes.extend(n)
else:
nodes.append(n)
elif node_factory:
# v = node_factory(self.subst(v, raw=1, **kw))
kw['raw'] = 1
v = node_factory(self.subst(v, **kw))
if SCons.Util.is_List(v):
nodes.extend(v)
else:
nodes.append(v)
else:
nodes.append(v)
return nodes
def gvars(self):
return self._dict
def lvars(self):
return {}
def subst(self, string, raw=0, target=None, source=None, conv=None, executor=None):
"""Recursively interpolates construction variables from the
Environment into the specified string, returning the expanded
result. Construction variables are specified by a $ prefix
in the string and begin with an initial underscore or
alphabetic character followed by any number of underscores
or alphanumeric characters. The construction variable names
may be surrounded by curly braces to separate the name from
trailing characters.
"""
gvars = self.gvars()
lvars = self.lvars()
lvars['__env__'] = self
if executor:
lvars.update(executor.get_lvars())
return SCons.Subst.scons_subst(string, self, raw, target, source, gvars, lvars, conv)
def subst_kw(self, kw, raw=0, target=None, source=None):
nkw = {}
for k, v in kw.items():
k = self.subst(k, raw, target, source)
if SCons.Util.is_String(v):
v = self.subst(v, raw, target, source)
nkw[k] = v
return nkw
def subst_list(self, string, raw=0, target=None, source=None, conv=None, executor=None):
"""Calls through to SCons.Subst.scons_subst_list(). See
the documentation for that function."""
gvars = self.gvars()
lvars = self.lvars()
lvars['__env__'] = self
if executor:
lvars.update(executor.get_lvars())
return SCons.Subst.scons_subst_list(string, self, raw, target, source, gvars, lvars, conv)
def subst_path(self, path, target=None, source=None):
"""Substitute a path list, turning EntryProxies into Nodes
and leaving Nodes (and other objects) as-is."""
if not SCons.Util.is_List(path):
path = [path]
def s(obj):
"""This is the "string conversion" routine that we have our
substitutions use to return Nodes, not strings. This relies
on the fact that an EntryProxy object has a get() method that
returns the underlying Node that it wraps, which is a bit of
architectural dependence that we might need to break or modify
in the future in response to additional requirements."""
try:
get = obj.get
except AttributeError:
obj = SCons.Util.to_String_for_subst(obj)
else:
obj = get()
return obj
r = []
for p in path:
if SCons.Util.is_String(p):
p = self.subst(p, target=target, source=source, conv=s)
if SCons.Util.is_List(p):
if len(p) == 1:
p = p[0]
else:
# We have an object plus a string, or multiple
# objects that we need to smush together. No choice
# but to make them into a string.
p = ''.join(map(SCons.Util.to_String_for_subst, p))
else:
p = s(p)
r.append(p)
return r
subst_target_source = subst
def backtick(self, command):
import subprocess
# common arguments
kw = { 'stdin' : 'devnull',
'stdout' : subprocess.PIPE,
'stderr' : subprocess.PIPE,
'universal_newlines' : True,
}
# if the command is a list, assume it's been quoted
# othewise force a shell
if not SCons.Util.is_List(command): kw['shell'] = True
# run constructed command
p = SCons.Action._subproc(self, command, **kw)
out,err = p.communicate()
status = p.wait()
if err:
sys.stderr.write(unicode(err))
if status:
raise OSError("'%s' exited %d" % (command, status))
return out
def AddMethod(self, function, name=None):
"""
Adds the specified function as a method of this construction
environment with the specified name. If the name is omitted,
the default name is the name of the function itself.
"""
method = MethodWrapper(self, function, name)
self.added_methods.append(method)
def RemoveMethod(self, function):
"""
Removes the specified function's MethodWrapper from the
added_methods list, so we don't re-bind it when making a clone.
"""
self.added_methods = [dm for dm in self.added_methods if not dm.method is function]
def Override(self, overrides):
"""
Produce a modified environment whose variables are overriden by
the overrides dictionaries. "overrides" is a dictionary that
will override the variables of this environment.
This function is much more efficient than Clone() or creating
a new Environment because it doesn't copy the construction
environment dictionary, it just wraps the underlying construction
environment, and doesn't even create a wrapper object if there
are no overrides.
"""
if not overrides: return self
o = copy_non_reserved_keywords(overrides)
if not o: return self
overrides = {}
merges = None
for key, value in o.items():
if key == 'parse_flags':
merges = value
else:
overrides[key] = SCons.Subst.scons_subst_once(value, self, key)
env = OverrideEnvironment(self, overrides)
if merges: env.MergeFlags(merges)
return env
def ParseFlags(self, *flags):
"""
Parse the set of flags and return a dict with the flags placed
in the appropriate entry. The flags are treated as a typical
set of command-line flags for a GNU-like toolchain and used to
populate the entries in the dict immediately below. If one of
the flag strings begins with a bang (exclamation mark), it is
assumed to be a command and the rest of the string is executed;
the result of that evaluation is then added to the dict.
"""
dict = {
'ASFLAGS' : SCons.Util.CLVar(''),
'CFLAGS' : SCons.Util.CLVar(''),
'CCFLAGS' : SCons.Util.CLVar(''),
'CXXFLAGS' : SCons.Util.CLVar(''),
'CPPDEFINES' : [],
'CPPFLAGS' : SCons.Util.CLVar(''),
'CPPPATH' : [],
'FRAMEWORKPATH' : SCons.Util.CLVar(''),
'FRAMEWORKS' : SCons.Util.CLVar(''),
'LIBPATH' : [],
'LIBS' : [],
'LINKFLAGS' : SCons.Util.CLVar(''),
'RPATH' : [],
}
def do_parse(arg):
# if arg is a sequence, recurse with each element
if not arg:
return
if not SCons.Util.is_String(arg):
for t in arg: do_parse(t)
return
# if arg is a command, execute it
if arg[0] == '!':
arg = self.backtick(arg[1:])
# utility function to deal with -D option
def append_define(name, dict = dict):
t = name.split('=')
if len(t) == 1:
dict['CPPDEFINES'].append(name)
else:
dict['CPPDEFINES'].append([t[0], '='.join(t[1:])])
# Loop through the flags and add them to the appropriate option.
# This tries to strike a balance between checking for all possible
# flags and keeping the logic to a finite size, so it doesn't
# check for some that don't occur often. It particular, if the
# flag is not known to occur in a config script and there's a way
# of passing the flag to the right place (by wrapping it in a -W
# flag, for example) we don't check for it. Note that most
# preprocessor options are not handled, since unhandled options
# are placed in CCFLAGS, so unless the preprocessor is invoked
# separately, these flags will still get to the preprocessor.
# Other options not currently handled:
# -iqoutedir (preprocessor search path)
# -u symbol (linker undefined symbol)
# -s (linker strip files)
# -static* (linker static binding)
# -shared* (linker dynamic binding)
# -symbolic (linker global binding)
# -R dir (deprecated linker rpath)
# IBM compilers may also accept -qframeworkdir=foo
params = shlex.split(arg)
append_next_arg_to = None # for multi-word args
for arg in params:
if append_next_arg_to:
if append_next_arg_to == 'CPPDEFINES':
append_define(arg)
elif append_next_arg_to == '-include':
t = ('-include', self.fs.File(arg))
dict['CCFLAGS'].append(t)
elif append_next_arg_to == '-isysroot':
t = ('-isysroot', arg)
dict['CCFLAGS'].append(t)
dict['LINKFLAGS'].append(t)
elif append_next_arg_to == '-arch':
t = ('-arch', arg)
dict['CCFLAGS'].append(t)
dict['LINKFLAGS'].append(t)
else:
dict[append_next_arg_to].append(arg)
append_next_arg_to = None
elif not arg[0] in ['-', '+']:
dict['LIBS'].append(self.fs.File(arg))
elif arg == '-dylib_file':
dict['LINKFLAGS'].append(arg)
append_next_arg_to = 'LINKFLAGS'
elif arg[:2] == '-L':
if arg[2:]:
dict['LIBPATH'].append(arg[2:])
else:
append_next_arg_to = 'LIBPATH'
elif arg[:2] == '-l':
if arg[2:]:
dict['LIBS'].append(arg[2:])
else:
append_next_arg_to = 'LIBS'
elif arg[:2] == '-I':
if arg[2:]:
dict['CPPPATH'].append(arg[2:])
else:
append_next_arg_to = 'CPPPATH'
elif arg[:4] == '-Wa,':
dict['ASFLAGS'].append(arg[4:])
dict['CCFLAGS'].append(arg)
elif arg[:4] == '-Wl,':
if arg[:11] == '-Wl,-rpath=':
dict['RPATH'].append(arg[11:])
elif arg[:7] == '-Wl,-R,':
dict['RPATH'].append(arg[7:])
elif arg[:6] == '-Wl,-R':
dict['RPATH'].append(arg[6:])
else:
dict['LINKFLAGS'].append(arg)
elif arg[:4] == '-Wp,':
dict['CPPFLAGS'].append(arg)
elif arg[:2] == '-D':
if arg[2:]:
append_define(arg[2:])
else:
append_next_arg_to = 'CPPDEFINES'
elif arg == '-framework':
append_next_arg_to = 'FRAMEWORKS'
elif arg[:14] == '-frameworkdir=':
dict['FRAMEWORKPATH'].append(arg[14:])
elif arg[:2] == '-F':
if arg[2:]:
dict['FRAMEWORKPATH'].append(arg[2:])
else:
append_next_arg_to = 'FRAMEWORKPATH'
elif arg in ['-mno-cygwin',
'-pthread',
'-openmp',
'-fopenmp']:
dict['CCFLAGS'].append(arg)
dict['LINKFLAGS'].append(arg)
elif arg == '-mwindows':
dict['LINKFLAGS'].append(arg)
elif arg[:5] == '-std=':
if arg[5:].find('++')!=-1:
key='CXXFLAGS'
else:
key='CFLAGS'
dict[key].append(arg)
elif arg[0] == '+':
dict['CCFLAGS'].append(arg)
dict['LINKFLAGS'].append(arg)
elif arg in ['-include', '-isysroot', '-arch']:
append_next_arg_to = arg
else:
dict['CCFLAGS'].append(arg)
for arg in flags:
do_parse(arg)
return dict
def MergeFlags(self, args, unique=1, dict=None):
"""
Merge the dict in args into the construction variables of this
env, or the passed-in dict. If args is not a dict, it is
converted into a dict using ParseFlags. If unique is not set,
the flags are appended rather than merged.
"""
if dict is None:
dict = self
if not SCons.Util.is_Dict(args):
args = self.ParseFlags(args)
if not unique:
self.Append(**args)
return self
for key, value in args.items():
if not value:
continue
try:
orig = self[key]
except KeyError:
orig = value
else:
if not orig:
orig = value
elif value:
# Add orig and value. The logic here was lifted from
# part of env.Append() (see there for a lot of comments
# about the order in which things are tried) and is
# used mainly to handle coercion of strings to CLVar to
# "do the right thing" given (e.g.) an original CCFLAGS
# string variable like '-pipe -Wall'.
try:
orig = orig + value
except (KeyError, TypeError):
try:
add_to_orig = orig.append
except AttributeError:
value.insert(0, orig)
orig = value
else:
add_to_orig(value)
t = []
if key[-4:] == 'PATH':
### keep left-most occurence
for v in orig:
if v not in t:
t.append(v)
else:
### keep right-most occurence
orig.reverse()
for v in orig:
if v not in t:
t.insert(0, v)
self[key] = t
return self
# def MergeShellPaths(self, args, prepend=1):
# """
# Merge the dict in args into the shell environment in env['ENV'].
# Shell path elements are appended or prepended according to prepend.
# Uses Pre/AppendENVPath, so it always appends or prepends uniquely.
# Example: env.MergeShellPaths({'LIBPATH': '/usr/local/lib'})
# prepends /usr/local/lib to env['ENV']['LIBPATH'].
# """
# for pathname, pathval in args.items():
# if not pathval:
# continue
# if prepend:
# self.PrependENVPath(pathname, pathval)
# else:
# self.AppendENVPath(pathname, pathval)
def default_decide_source(dependency, target, prev_ni):
f = SCons.Defaults.DefaultEnvironment().decide_source
return f(dependency, target, prev_ni)
def default_decide_target(dependency, target, prev_ni):
f = SCons.Defaults.DefaultEnvironment().decide_target
return f(dependency, target, prev_ni)
def default_copy_from_cache(src, dst):
f = SCons.Defaults.DefaultEnvironment().copy_from_cache
return f(src, dst)
class Base(SubstitutionEnvironment):
"""Base class for "real" construction Environments. These are the
primary objects used to communicate dependency and construction
information to the build engine.
Keyword arguments supplied when the construction Environment
is created are construction variables used to initialize the
Environment.
"""
memoizer_counters = []
#######################################################################
# This is THE class for interacting with the SCons build engine,
# and it contains a lot of stuff, so we're going to try to keep this
# a little organized by grouping the methods.
#######################################################################
#######################################################################
# Methods that make an Environment act like a dictionary. These have
# the expected standard names for Python mapping objects. Note that
# we don't actually make an Environment a subclass of UserDict for
# performance reasons. Note also that we only supply methods for
# dictionary functionality that we actually need and use.
#######################################################################
def __init__(self,
platform=None,
tools=None,
toolpath=None,
variables=None,
parse_flags = None,
**kw):
"""
Initialization of a basic SCons construction environment,
including setting up special construction variables like BUILDER,
PLATFORM, etc., and searching for and applying available Tools.
Note that we do *not* call the underlying base class
(SubsitutionEnvironment) initialization, because we need to
initialize things in a very specific order that doesn't work
with the much simpler base class initialization.
"""
if __debug__: logInstanceCreation(self, 'Environment.Base')
self._memo = {}
self.fs = SCons.Node.FS.get_default_fs()
self.ans = SCons.Node.Alias.default_ans
self.lookup_list = SCons.Node.arg2nodes_lookups
self._dict = semi_deepcopy(SCons.Defaults.ConstructionEnvironment)
self._init_special()
self.added_methods = []
# We don't use AddMethod, or define these as methods in this
# class, because we *don't* want these functions to be bound
# methods. They need to operate independently so that the
# settings will work properly regardless of whether a given
# target ends up being built with a Base environment or an
# OverrideEnvironment or what have you.
self.decide_target = default_decide_target
self.decide_source = default_decide_source
self.copy_from_cache = default_copy_from_cache
self._dict['BUILDERS'] = BuilderDict(self._dict['BUILDERS'], self)
if platform is None:
platform = self._dict.get('PLATFORM', None)
if platform is None:
platform = SCons.Platform.Platform()
if SCons.Util.is_String(platform):
platform = SCons.Platform.Platform(platform)
self._dict['PLATFORM'] = str(platform)
platform(self)
self._dict['HOST_OS'] = self._dict.get('HOST_OS',None)
self._dict['HOST_ARCH'] = self._dict.get('HOST_ARCH',None)
# Now set defaults for TARGET_{OS|ARCH}
self._dict['TARGET_OS'] = self._dict.get('HOST_OS',None)
self._dict['TARGET_ARCH'] = self._dict.get('HOST_ARCH',None)
# Apply the passed-in and customizable variables to the
# environment before calling the tools, because they may use
# some of them during initialization.
if 'options' in kw:
# Backwards compatibility: they may stll be using the
# old "options" keyword.
variables = kw['options']
del kw['options']
self.Replace(**kw)
keys = list(kw.keys())
if variables:
keys = keys + list(variables.keys())
variables.Update(self)
save = {}
for k in keys:
try:
save[k] = self._dict[k]
except KeyError:
# No value may have been set if they tried to pass in a
# reserved variable name like TARGETS.
pass
SCons.Tool.Initializers(self)
if tools is None:
tools = self._dict.get('TOOLS', None)
if tools is None:
tools = ['default']
apply_tools(self, tools, toolpath)
# Now restore the passed-in and customized variables
# to the environment, since the values the user set explicitly
# should override any values set by the tools.
for key, val in save.items():
self._dict[key] = val
# Finally, apply any flags to be merged in
if parse_flags: self.MergeFlags(parse_flags)
#######################################################################
# Utility methods that are primarily for internal use by SCons.
# These begin with lower-case letters.
#######################################################################
def get_builder(self, name):
"""Fetch the builder with the specified name from the environment.
"""
try:
return self._dict['BUILDERS'][name]
except KeyError:
return None
def get_CacheDir(self):
try:
path = self._CacheDir_path
except AttributeError:
path = SCons.Defaults.DefaultEnvironment()._CacheDir_path
try:
if path == self._last_CacheDir_path:
return self._last_CacheDir
except AttributeError:
pass
cd = SCons.CacheDir.CacheDir(path)
self._last_CacheDir_path = path
self._last_CacheDir = cd
return cd
def get_factory(self, factory, default='File'):
"""Return a factory function for creating Nodes for this
construction environment.
"""
name = default
try:
is_node = issubclass(factory, SCons.Node.FS.Base)
except TypeError:
# The specified factory isn't a Node itself--it's
# most likely None, or possibly a callable.
pass
else:
if is_node:
# The specified factory is a Node (sub)class. Try to
# return the FS method that corresponds to the Node's
# name--that is, we return self.fs.Dir if they want a Dir,
# self.fs.File for a File, etc.
try: name = factory.__name__
except AttributeError: pass
else: factory = None
if not factory:
# They passed us None, or we picked up a name from a specified
# class, so return the FS method. (Note that we *don't*
# use our own self.{Dir,File} methods because that would
# cause env.subst() to be called twice on the file name,
# interfering with files that have $$ in them.)
factory = getattr(self.fs, name)
return factory
memoizer_counters.append(SCons.Memoize.CountValue('_gsm'))
def _gsm(self):
try:
return self._memo['_gsm']
except KeyError:
pass
result = {}
try:
scanners = self._dict['SCANNERS']
except KeyError:
pass
else:
# Reverse the scanner list so that, if multiple scanners
# claim they can scan the same suffix, earlier scanners
# in the list will overwrite later scanners, so that
# the result looks like a "first match" to the user.
if not SCons.Util.is_List(scanners):
scanners = [scanners]
else:
scanners = scanners[:] # copy so reverse() doesn't mod original
scanners.reverse()
for scanner in scanners:
for k in scanner.get_skeys(self):
if k and self['PLATFORM'] == 'win32':
k = k.lower()
result[k] = scanner
self._memo['_gsm'] = result
return result
def get_scanner(self, skey):
"""Find the appropriate scanner given a key (usually a file suffix).
"""
if skey and self['PLATFORM'] == 'win32':
skey = skey.lower()
return self._gsm().get(skey)
def scanner_map_delete(self, kw=None):
"""Delete the cached scanner map (if we need to).
"""
try:
del self._memo['_gsm']
except KeyError:
pass
def _update(self, dict):
"""Update an environment's values directly, bypassing the normal
checks that occur when users try to set items.
"""
self._dict.update(dict)
def get_src_sig_type(self):
try:
return self.src_sig_type
except AttributeError:
t = SCons.Defaults.DefaultEnvironment().src_sig_type
self.src_sig_type = t
return t
def get_tgt_sig_type(self):
try:
return self.tgt_sig_type
except AttributeError:
t = SCons.Defaults.DefaultEnvironment().tgt_sig_type
self.tgt_sig_type = t
return t
#######################################################################
# Public methods for manipulating an Environment. These begin with
# upper-case letters. The essential characteristic of methods in
# this section is that they do *not* have corresponding same-named
# global functions. For example, a stand-alone Append() function
# makes no sense, because Append() is all about appending values to
# an Environment's construction variables.
#######################################################################
def Append(self, **kw):
"""Append values to existing construction variables
in an Environment.
"""
kw = copy_non_reserved_keywords(kw)
for key, val in kw.items():
# It would be easier on the eyes to write this using
# "continue" statements whenever we finish processing an item,
# but Python 1.5.2 apparently doesn't let you use "continue"
# within try:-except: blocks, so we have to nest our code.
try:
if key == 'CPPDEFINES' and SCons.Util.is_String(self._dict[key]):
self._dict[key] = [self._dict[key]]
orig = self._dict[key]
except KeyError:
# No existing variable in the environment, so just set
# it to the new value.
if key == 'CPPDEFINES' and SCons.Util.is_String(val):
self._dict[key] = [val]
else:
self._dict[key] = val
else:
try:
# Check if the original looks like a dictionary.
# If it is, we can't just try adding the value because
# dictionaries don't have __add__() methods, and
# things like UserList will incorrectly coerce the
# original dict to a list (which we don't want).
update_dict = orig.update
except AttributeError:
try:
# Most straightforward: just try to add them
# together. This will work in most cases, when the
# original and new values are of compatible types.
self._dict[key] = orig + val
except (KeyError, TypeError):
try:
# Check if the original is a list.
add_to_orig = orig.append
except AttributeError:
# The original isn't a list, but the new
# value is (by process of elimination),
# so insert the original in the new value
# (if there's one to insert) and replace
# the variable with it.
if orig:
val.insert(0, orig)
self._dict[key] = val
else:
# The original is a list, so append the new
# value to it (if there's a value to append).
if val:
add_to_orig(val)
else:
# The original looks like a dictionary, so update it
# based on what we think the value looks like.
if SCons.Util.is_List(val):
if key == 'CPPDEFINES':
orig = orig.items()
orig += val
self._dict[key] = orig
else:
for v in val:
orig[v] = None
else:
try:
update_dict(val)
except (AttributeError, TypeError, ValueError):
if SCons.Util.is_Dict(val):
for k, v in val.items():
orig[k] = v
else:
orig[val] = None
self.scanner_map_delete(kw)
# allow Dirs and strings beginning with # for top-relative
# Note this uses the current env's fs (in self).
def _canonicalize(self, path):
if not SCons.Util.is_String(path): # typically a Dir
path = str(path)
if path and path[0] == '#':
path = str(self.fs.Dir(path))
return path
def AppendENVPath(self, name, newpath, envname = 'ENV',
sep = os.pathsep, delete_existing=1):
"""Append path elements to the path 'name' in the 'ENV'
dictionary for this environment. Will only add any particular
path once, and will normpath and normcase all paths to help
assure this. This can also handle the case where the env
variable is a list instead of a string.
If delete_existing is 0, a newpath which is already in the path
will not be moved to the end (it will be left where it is).
"""
orig = ''
if envname in self._dict and name in self._dict[envname]:
orig = self._dict[envname][name]
nv = SCons.Util.AppendPath(orig, newpath, sep, delete_existing,
canonicalize=self._canonicalize)
if envname not in self._dict:
self._dict[envname] = {}
self._dict[envname][name] = nv
def AppendUnique(self, delete_existing=0, **kw):
"""Append values to existing construction variables
in an Environment, if they're not already there.
If delete_existing is 1, removes existing values first, so
values move to end.
"""
kw = copy_non_reserved_keywords(kw)
for key, val in kw.items():
if SCons.Util.is_List(val):
val = _delete_duplicates(val, delete_existing)
if key not in self._dict or self._dict[key] in ('', None):
self._dict[key] = val
elif SCons.Util.is_Dict(self._dict[key]) and \
SCons.Util.is_Dict(val):
self._dict[key].update(val)
elif SCons.Util.is_List(val):
dk = self._dict[key]
if key == 'CPPDEFINES':
tmp = []
for i in val:
if SCons.Util.is_List(i):
if len(i) >= 2:
tmp.append((i[0], i[1]))
else:
tmp.append((i[0],))
elif SCons.Util.is_Tuple(i):
tmp.append(i)
else:
tmp.append((i,))
val = tmp
if SCons.Util.is_Dict(dk):
dk = dk.items()
elif SCons.Util.is_String(dk):
dk = [(dk,)]
else:
tmp = []
for i in dk:
if SCons.Util.is_List(i):
if len(i) >= 2:
tmp.append((i[0], i[1]))
else:
tmp.append((i[0],))
elif SCons.Util.is_Tuple(i):
tmp.append(i)
else:
tmp.append((i,))
dk = tmp
else:
if not SCons.Util.is_List(dk):
dk = [dk]
if delete_existing:
dk = [x for x in dk if x not in val]
else:
val = [x for x in val if x not in dk]
self._dict[key] = dk + val
else:
dk = self._dict[key]
if SCons.Util.is_List(dk):
if key == 'CPPDEFINES':
tmp = []
for i in dk:
if SCons.Util.is_List(i):
if len(i) >= 2:
tmp.append((i[0], i[1]))
else:
tmp.append((i[0],))
elif SCons.Util.is_Tuple(i):
tmp.append(i)
else:
tmp.append((i,))
dk = tmp
if SCons.Util.is_Dict(val):
val = val.items()
elif SCons.Util.is_String(val):
val = [(val,)]
if delete_existing:
dk = filter(lambda x, val=val: x not in val, dk)
self._dict[key] = dk + val
else:
dk = [x for x in dk if x not in val]
self._dict[key] = dk + val
else:
# By elimination, val is not a list. Since dk is a
# list, wrap val in a list first.
if delete_existing:
dk = filter(lambda x, val=val: x not in val, dk)
self._dict[key] = dk + [val]
else:
if not val in dk:
self._dict[key] = dk + [val]
else:
if key == 'CPPDEFINES':
if SCons.Util.is_String(dk):
dk = [dk]
elif SCons.Util.is_Dict(dk):
dk = dk.items()
if SCons.Util.is_String(val):
if val in dk:
val = []
else:
val = [val]
elif SCons.Util.is_Dict(val):
tmp = []
for i,j in val.iteritems():
if j is not None:
tmp.append((i,j))
else:
tmp.append(i)
val = tmp
if delete_existing:
dk = [x for x in dk if x not in val]
self._dict[key] = dk + val
self.scanner_map_delete(kw)
def Clone(self, tools=[], toolpath=None, parse_flags = None, **kw):
"""Return a copy of a construction Environment. The
copy is like a Python "deep copy"--that is, independent
copies are made recursively of each objects--except that
a reference is copied when an object is not deep-copyable
(like a function). There are no references to any mutable
objects in the original Environment.
"""
try:
builders = self._dict['BUILDERS']
except KeyError:
pass
clone = copy.copy(self)
# BUILDERS is not safe to do a simple copy
clone._dict = semi_deepcopy_dict(self._dict, ['BUILDERS'])
clone._dict['BUILDERS'] = BuilderDict(builders, clone)
# Check the methods added via AddMethod() and re-bind them to
# the cloned environment. Only do this if the attribute hasn't
# been overwritten by the user explicitly and still points to
# the added method.
clone.added_methods = []
for mw in self.added_methods:
if mw == getattr(self, mw.name):
clone.added_methods.append(mw.clone(clone))
clone._memo = {}
# Apply passed-in variables before the tools
# so the tools can use the new variables
kw = copy_non_reserved_keywords(kw)
new = {}
for key, value in kw.items():
new[key] = SCons.Subst.scons_subst_once(value, self, key)
clone.Replace(**new)
apply_tools(clone, tools, toolpath)
# apply them again in case the tools overwrote them
clone.Replace(**new)
# Finally, apply any flags to be merged in
if parse_flags: clone.MergeFlags(parse_flags)
if __debug__: logInstanceCreation(self, 'Environment.EnvironmentClone')
return clone
def Copy(self, *args, **kw):
global _warn_copy_deprecated
if _warn_copy_deprecated:
msg = "The env.Copy() method is deprecated; use the env.Clone() method instead."
SCons.Warnings.warn(SCons.Warnings.DeprecatedCopyWarning, msg)
_warn_copy_deprecated = False
return self.Clone(*args, **kw)
def _changed_build(self, dependency, target, prev_ni):
if dependency.changed_state(target, prev_ni):
return 1
return self.decide_source(dependency, target, prev_ni)
def _changed_content(self, dependency, target, prev_ni):
return dependency.changed_content(target, prev_ni)
def _changed_source(self, dependency, target, prev_ni):
target_env = dependency.get_build_env()
type = target_env.get_tgt_sig_type()
if type == 'source':
return target_env.decide_source(dependency, target, prev_ni)
else:
return target_env.decide_target(dependency, target, prev_ni)
def _changed_timestamp_then_content(self, dependency, target, prev_ni):
return dependency.changed_timestamp_then_content(target, prev_ni)
def _changed_timestamp_newer(self, dependency, target, prev_ni):
return dependency.changed_timestamp_newer(target, prev_ni)
def _changed_timestamp_match(self, dependency, target, prev_ni):
return dependency.changed_timestamp_match(target, prev_ni)
def _copy_from_cache(self, src, dst):
return self.fs.copy(src, dst)
def _copy2_from_cache(self, src, dst):
return self.fs.copy2(src, dst)
def Decider(self, function):
copy_function = self._copy2_from_cache
if function in ('MD5', 'content'):
if not SCons.Util.md5:
raise UserError("MD5 signatures are not available in this version of Python.")
function = self._changed_content
elif function == 'MD5-timestamp':
function = self._changed_timestamp_then_content
elif function in ('timestamp-newer', 'make'):
function = self._changed_timestamp_newer
copy_function = self._copy_from_cache
elif function == 'timestamp-match':
function = self._changed_timestamp_match
elif not callable(function):
raise UserError("Unknown Decider value %s" % repr(function))
# We don't use AddMethod because we don't want to turn the
# function, which only expects three arguments, into a bound
# method, which would add self as an initial, fourth argument.
self.decide_target = function
self.decide_source = function
self.copy_from_cache = copy_function
def Detect(self, progs):
"""Return the first available program in progs.
"""
if not SCons.Util.is_List(progs):
progs = [ progs ]
for prog in progs:
path = self.WhereIs(prog)
if path: return prog
return None
def Dictionary(self, *args):
if not args:
return self._dict
dlist = [self._dict[x] for x in args]
if len(dlist) == 1:
dlist = dlist[0]
return dlist
def Dump(self, key = None):
"""
Using the standard Python pretty printer, dump the contents of the
scons build environment to stdout.
If the key passed in is anything other than None, then that will
be used as an index into the build environment dictionary and
whatever is found there will be fed into the pretty printer. Note
that this key is case sensitive.
"""
import pprint
pp = pprint.PrettyPrinter(indent=2)
if key:
dict = self.Dictionary(key)
else:
dict = self.Dictionary()
return pp.pformat(dict)
def FindIxes(self, paths, prefix, suffix):
"""
Search a list of paths for something that matches the prefix and suffix.
paths - the list of paths or nodes.
prefix - construction variable for the prefix.
suffix - construction variable for the suffix.
"""
suffix = self.subst('$'+suffix)
prefix = self.subst('$'+prefix)
for path in paths:
dir,name = os.path.split(str(path))
if name[:len(prefix)] == prefix and name[-len(suffix):] == suffix:
return path
def ParseConfig(self, command, function=None, unique=1):
"""
Use the specified function to parse the output of the command
in order to modify the current environment. The 'command' can
be a string or a list of strings representing a command and
its arguments. 'Function' is an optional argument that takes
the environment, the output of the command, and the unique flag.
If no function is specified, MergeFlags, which treats the output
as the result of a typical 'X-config' command (i.e. gtk-config),
will merge the output into the appropriate variables.
"""
if function is None:
def parse_conf(env, cmd, unique=unique):
return env.MergeFlags(cmd, unique)
function = parse_conf
if SCons.Util.is_List(command):
command = ' '.join(command)
command = self.subst(command)
return function(self, self.backtick(command))
def ParseDepends(self, filename, must_exist=None, only_one=0):
"""
Parse a mkdep-style file for explicit dependencies. This is
completely abusable, and should be unnecessary in the "normal"
case of proper SCons configuration, but it may help make
the transition from a Make hierarchy easier for some people
to swallow. It can also be genuinely useful when using a tool
that can write a .d file, but for which writing a scanner would
be too complicated.
"""
filename = self.subst(filename)
try:
fp = open(filename, 'r')
except IOError:
if must_exist:
raise
return
lines = SCons.Util.LogicalLines(fp).readlines()
lines = [l for l in lines if l[0] != '#']
tdlist = []
for line in lines:
try:
target, depends = line.split(':', 1)
except (AttributeError, ValueError):
# Throws AttributeError if line isn't a string. Can throw
# ValueError if line doesn't split into two or more elements.
pass
else:
tdlist.append((target.split(), depends.split()))
if only_one:
targets = []
for td in tdlist:
targets.extend(td[0])
if len(targets) > 1:
raise SCons.Errors.UserError(
"More than one dependency target found in `%s': %s"
% (filename, targets))
for target, depends in tdlist:
self.Depends(target, depends)
def Platform(self, platform):
platform = self.subst(platform)
return SCons.Platform.Platform(platform)(self)
def Prepend(self, **kw):
"""Prepend values to existing construction variables
in an Environment.
"""
kw = copy_non_reserved_keywords(kw)
for key, val in kw.items():
# It would be easier on the eyes to write this using
# "continue" statements whenever we finish processing an item,
# but Python 1.5.2 apparently doesn't let you use "continue"
# within try:-except: blocks, so we have to nest our code.
try:
orig = self._dict[key]
except KeyError:
# No existing variable in the environment, so just set
# it to the new value.
self._dict[key] = val
else:
try:
# Check if the original looks like a dictionary.
# If it is, we can't just try adding the value because
# dictionaries don't have __add__() methods, and
# things like UserList will incorrectly coerce the
# original dict to a list (which we don't want).
update_dict = orig.update
except AttributeError:
try:
# Most straightforward: just try to add them
# together. This will work in most cases, when the
# original and new values are of compatible types.
self._dict[key] = val + orig
except (KeyError, TypeError):
try:
# Check if the added value is a list.
add_to_val = val.append
except AttributeError:
# The added value isn't a list, but the
# original is (by process of elimination),
# so insert the the new value in the original
# (if there's one to insert).
if val:
orig.insert(0, val)
else:
# The added value is a list, so append
# the original to it (if there's a value
# to append).
if orig:
add_to_val(orig)
self._dict[key] = val
else:
# The original looks like a dictionary, so update it
# based on what we think the value looks like.
if SCons.Util.is_List(val):
for v in val:
orig[v] = None
else:
try:
update_dict(val)
except (AttributeError, TypeError, ValueError):
if SCons.Util.is_Dict(val):
for k, v in val.items():
orig[k] = v
else:
orig[val] = None
self.scanner_map_delete(kw)
def PrependENVPath(self, name, newpath, envname = 'ENV', sep = os.pathsep,
delete_existing=1):
"""Prepend path elements to the path 'name' in the 'ENV'
dictionary for this environment. Will only add any particular
path once, and will normpath and normcase all paths to help
assure this. This can also handle the case where the env
variable is a list instead of a string.
If delete_existing is 0, a newpath which is already in the path
will not be moved to the front (it will be left where it is).
"""
orig = ''
if envname in self._dict and name in self._dict[envname]:
orig = self._dict[envname][name]
nv = SCons.Util.PrependPath(orig, newpath, sep, delete_existing,
canonicalize=self._canonicalize)
if envname not in self._dict:
self._dict[envname] = {}
self._dict[envname][name] = nv
def PrependUnique(self, delete_existing=0, **kw):
"""Prepend values to existing construction variables
in an Environment, if they're not already there.
If delete_existing is 1, removes existing values first, so
values move to front.
"""
kw = copy_non_reserved_keywords(kw)
for key, val in kw.items():
if SCons.Util.is_List(val):
val = _delete_duplicates(val, not delete_existing)
if key not in self._dict or self._dict[key] in ('', None):
self._dict[key] = val
elif SCons.Util.is_Dict(self._dict[key]) and \
SCons.Util.is_Dict(val):
self._dict[key].update(val)
elif SCons.Util.is_List(val):
dk = self._dict[key]
if not SCons.Util.is_List(dk):
dk = [dk]
if delete_existing:
dk = [x for x in dk if x not in val]
else:
val = [x for x in val if x not in dk]
self._dict[key] = val + dk
else:
dk = self._dict[key]
if SCons.Util.is_List(dk):
# By elimination, val is not a list. Since dk is a
# list, wrap val in a list first.
if delete_existing:
dk = [x for x in dk if x not in val]
self._dict[key] = [val] + dk
else:
if not val in dk:
self._dict[key] = [val] + dk
else:
if delete_existing:
dk = [x for x in dk if x not in val]
self._dict[key] = val + dk
self.scanner_map_delete(kw)
def Replace(self, **kw):
"""Replace existing construction variables in an Environment
with new construction variables and/or values.
"""
try:
kwbd = kw['BUILDERS']
except KeyError:
pass
else:
kwbd = BuilderDict(kwbd,self)
del kw['BUILDERS']
self.__setitem__('BUILDERS', kwbd)
kw = copy_non_reserved_keywords(kw)
self._update(semi_deepcopy(kw))
self.scanner_map_delete(kw)
def ReplaceIxes(self, path, old_prefix, old_suffix, new_prefix, new_suffix):
"""
Replace old_prefix with new_prefix and old_suffix with new_suffix.
env - Environment used to interpolate variables.
path - the path that will be modified.
old_prefix - construction variable for the old prefix.
old_suffix - construction variable for the old suffix.
new_prefix - construction variable for the new prefix.
new_suffix - construction variable for the new suffix.
"""
old_prefix = self.subst('$'+old_prefix)
old_suffix = self.subst('$'+old_suffix)
new_prefix = self.subst('$'+new_prefix)
new_suffix = self.subst('$'+new_suffix)
dir,name = os.path.split(str(path))
if name[:len(old_prefix)] == old_prefix:
name = name[len(old_prefix):]
if name[-len(old_suffix):] == old_suffix:
name = name[:-len(old_suffix)]
return os.path.join(dir, new_prefix+name+new_suffix)
def SetDefault(self, **kw):
for k in kw.keys():
if k in self._dict:
del kw[k]
self.Replace(**kw)
def _find_toolpath_dir(self, tp):
return self.fs.Dir(self.subst(tp)).srcnode().abspath
def Tool(self, tool, toolpath=None, **kw):
if SCons.Util.is_String(tool):
tool = self.subst(tool)
if toolpath is None:
toolpath = self.get('toolpath', [])
toolpath = list(map(self._find_toolpath_dir, toolpath))
tool = SCons.Tool.Tool(tool, toolpath, **kw)
tool(self)
def WhereIs(self, prog, path=None, pathext=None, reject=[]):
"""Find prog in the path.
"""
if path is None:
try:
path = self['ENV']['PATH']
except KeyError:
pass
elif SCons.Util.is_String(path):
path = self.subst(path)
if pathext is None:
try:
pathext = self['ENV']['PATHEXT']
except KeyError:
pass
elif SCons.Util.is_String(pathext):
pathext = self.subst(pathext)
prog = self.subst(prog)
path = SCons.Util.WhereIs(prog, path, pathext, reject)
if path: return path
return None
#######################################################################
# Public methods for doing real "SCons stuff" (manipulating
# dependencies, setting attributes on targets, etc.). These begin
# with upper-case letters. The essential characteristic of methods
# in this section is that they all *should* have corresponding
# same-named global functions.
#######################################################################
def Action(self, *args, **kw):
def subst_string(a, self=self):
if SCons.Util.is_String(a):
a = self.subst(a)
return a
nargs = list(map(subst_string, args))
nkw = self.subst_kw(kw)
return SCons.Action.Action(*nargs, **nkw)
def AddPreAction(self, files, action):
nodes = self.arg2nodes(files, self.fs.Entry)
action = SCons.Action.Action(action)
uniq = {}
for executor in [n.get_executor() for n in nodes]:
uniq[executor] = 1
for executor in uniq.keys():
executor.add_pre_action(action)
return nodes
def AddPostAction(self, files, action):
nodes = self.arg2nodes(files, self.fs.Entry)
action = SCons.Action.Action(action)
uniq = {}
for executor in [n.get_executor() for n in nodes]:
uniq[executor] = 1
for executor in uniq.keys():
executor.add_post_action(action)
return nodes
def Alias(self, target, source=[], action=None, **kw):
tlist = self.arg2nodes(target, self.ans.Alias)
if not SCons.Util.is_List(source):
source = [source]
source = [_f for _f in source if _f]
if not action:
if not source:
# There are no source files and no action, so just
# return a target list of classic Alias Nodes, without
# any builder. The externally visible effect is that
# this will make the wrapping Script.BuildTask class
# say that there's "Nothing to be done" for this Alias,
# instead of that it's "up to date."
return tlist
# No action, but there are sources. Re-call all the target
# builders to add the sources to each target.
result = []
for t in tlist:
bld = t.get_builder(AliasBuilder)
result.extend(bld(self, t, source))
return result
nkw = self.subst_kw(kw)
nkw.update({
'action' : SCons.Action.Action(action),
'source_factory' : self.fs.Entry,
'multi' : 1,
'is_explicit' : None,
})
bld = SCons.Builder.Builder(**nkw)
# Apply the Builder separately to each target so that the Aliases
# stay separate. If we did one "normal" Builder call with the
# whole target list, then all of the target Aliases would be
# associated under a single Executor.
result = []
for t in tlist:
# Calling the convert() method will cause a new Executor to be
# created from scratch, so we have to explicitly initialize
# it with the target's existing sources, plus our new ones,
# so nothing gets lost.
b = t.get_builder()
if b is None or b is AliasBuilder:
b = bld
else:
nkw['action'] = b.action + action
b = SCons.Builder.Builder(**nkw)
t.convert()
result.extend(b(self, t, t.sources + source))
return result
def AlwaysBuild(self, *targets):
tlist = []
for t in targets:
tlist.extend(self.arg2nodes(t, self.fs.Entry))
for t in tlist:
t.set_always_build()
return tlist
def BuildDir(self, *args, **kw):
msg = """BuildDir() and the build_dir keyword have been deprecated;\n\tuse VariantDir() and the variant_dir keyword instead."""
SCons.Warnings.warn(SCons.Warnings.DeprecatedBuildDirWarning, msg)
if 'build_dir' in kw:
kw['variant_dir'] = kw['build_dir']
del kw['build_dir']
return self.VariantDir(*args, **kw)
def Builder(self, **kw):
nkw = self.subst_kw(kw)
return SCons.Builder.Builder(**nkw)
def CacheDir(self, path):
import SCons.CacheDir
if path is not None:
path = self.subst(path)
self._CacheDir_path = path
def Clean(self, targets, files):
global CleanTargets
tlist = self.arg2nodes(targets, self.fs.Entry)
flist = self.arg2nodes(files, self.fs.Entry)
for t in tlist:
try:
CleanTargets[t].extend(flist)
except KeyError:
CleanTargets[t] = flist
def Configure(self, *args, **kw):
nargs = [self]
if args:
nargs = nargs + self.subst_list(args)[0]
nkw = self.subst_kw(kw)
nkw['_depth'] = kw.get('_depth', 0) + 1
try:
nkw['custom_tests'] = self.subst_kw(nkw['custom_tests'])
except KeyError:
pass
return SCons.SConf.SConf(*nargs, **nkw)
def Command(self, target, source, action, **kw):
"""Builds the supplied target files from the supplied
source files using the supplied action. Action may
be any type that the Builder constructor will accept
for an action."""
bkw = {
'action' : action,
'target_factory' : self.fs.Entry,
'source_factory' : self.fs.Entry,
}
try: bkw['source_scanner'] = kw['source_scanner']
except KeyError: pass
else: del kw['source_scanner']
bld = SCons.Builder.Builder(**bkw)
return bld(self, target, source, **kw)
def Depends(self, target, dependency):
"""Explicity specify that 'target's depend on 'dependency'."""
tlist = self.arg2nodes(target, self.fs.Entry)
dlist = self.arg2nodes(dependency, self.fs.Entry)
for t in tlist:
t.add_dependency(dlist)
return tlist
def Dir(self, name, *args, **kw):
"""
"""
s = self.subst(name)
if SCons.Util.is_Sequence(s):
result=[]
for e in s:
result.append(self.fs.Dir(e, *args, **kw))
return result
return self.fs.Dir(s, *args, **kw)
def NoClean(self, *targets):
"""Tags a target so that it will not be cleaned by -c"""
tlist = []
for t in targets:
tlist.extend(self.arg2nodes(t, self.fs.Entry))
for t in tlist:
t.set_noclean()
return tlist
def NoCache(self, *targets):
"""Tags a target so that it will not be cached"""
tlist = []
for t in targets:
tlist.extend(self.arg2nodes(t, self.fs.Entry))
for t in tlist:
t.set_nocache()
return tlist
def Entry(self, name, *args, **kw):
"""
"""
s = self.subst(name)
if SCons.Util.is_Sequence(s):
result=[]
for e in s:
result.append(self.fs.Entry(e, *args, **kw))
return result
return self.fs.Entry(s, *args, **kw)
def Environment(self, **kw):
return SCons.Environment.Environment(**self.subst_kw(kw))
def Execute(self, action, *args, **kw):
"""Directly execute an action through an Environment
"""
action = self.Action(action, *args, **kw)
result = action([], [], self)
if isinstance(result, SCons.Errors.BuildError):
errstr = result.errstr
if result.filename:
errstr = result.filename + ': ' + errstr
sys.stderr.write("scons: *** %s\n" % errstr)
return result.status
else:
return result
def File(self, name, *args, **kw):
"""
"""
s = self.subst(name)
if SCons.Util.is_Sequence(s):
result=[]
for e in s:
result.append(self.fs.File(e, *args, **kw))
return result
return self.fs.File(s, *args, **kw)
def FindFile(self, file, dirs):
file = self.subst(file)
nodes = self.arg2nodes(dirs, self.fs.Dir)
return SCons.Node.FS.find_file(file, tuple(nodes))
def Flatten(self, sequence):
return SCons.Util.flatten(sequence)
def GetBuildPath(self, files):
result = list(map(str, self.arg2nodes(files, self.fs.Entry)))
if SCons.Util.is_List(files):
return result
else:
return result[0]
def Glob(self, pattern, ondisk=True, source=False, strings=False):
return self.fs.Glob(self.subst(pattern), ondisk, source, strings)
def Ignore(self, target, dependency):
"""Ignore a dependency."""
tlist = self.arg2nodes(target, self.fs.Entry)
dlist = self.arg2nodes(dependency, self.fs.Entry)
for t in tlist:
t.add_ignore(dlist)
return tlist
def Literal(self, string):
return SCons.Subst.Literal(string)
def Local(self, *targets):
ret = []
for targ in targets:
if isinstance(targ, SCons.Node.Node):
targ.set_local()
ret.append(targ)
else:
for t in self.arg2nodes(targ, self.fs.Entry):
t.set_local()
ret.append(t)
return ret
def Precious(self, *targets):
tlist = []
for t in targets:
tlist.extend(self.arg2nodes(t, self.fs.Entry))
for t in tlist:
t.set_precious()
return tlist
def Repository(self, *dirs, **kw):
dirs = self.arg2nodes(list(dirs), self.fs.Dir)
self.fs.Repository(*dirs, **kw)
def Requires(self, target, prerequisite):
"""Specify that 'prerequisite' must be built before 'target',
(but 'target' does not actually depend on 'prerequisite'
and need not be rebuilt if it changes)."""
tlist = self.arg2nodes(target, self.fs.Entry)
plist = self.arg2nodes(prerequisite, self.fs.Entry)
for t in tlist:
t.add_prerequisite(plist)
return tlist
def Scanner(self, *args, **kw):
nargs = []
for arg in args:
if SCons.Util.is_String(arg):
arg = self.subst(arg)
nargs.append(arg)
nkw = self.subst_kw(kw)
return SCons.Scanner.Base(*nargs, **nkw)
def SConsignFile(self, name=".sconsign", dbm_module=None):
if name is not None:
name = self.subst(name)
if not os.path.isabs(name):
name = os.path.join(str(self.fs.SConstruct_dir), name)
if name:
name = os.path.normpath(name)
sconsign_dir = os.path.dirname(name)
if sconsign_dir and not os.path.exists(sconsign_dir):
self.Execute(SCons.Defaults.Mkdir(sconsign_dir))
SCons.SConsign.File(name, dbm_module)
def SideEffect(self, side_effect, target):
"""Tell scons that side_effects are built as side
effects of building targets."""
side_effects = self.arg2nodes(side_effect, self.fs.Entry)
targets = self.arg2nodes(target, self.fs.Entry)
for side_effect in side_effects:
if side_effect.multiple_side_effect_has_builder():
raise SCons.Errors.UserError("Multiple ways to build the same target were specified for: %s" % str(side_effect))
side_effect.add_source(targets)
side_effect.side_effect = 1
self.Precious(side_effect)
for target in targets:
target.side_effects.append(side_effect)
return side_effects
def SourceCode(self, entry, builder):
"""Arrange for a source code builder for (part of) a tree."""
msg = """SourceCode() has been deprecated and there is no replacement.
\tIf you need this function, please contact dev@scons.tigris.org."""
SCons.Warnings.warn(SCons.Warnings.DeprecatedSourceCodeWarning, msg)
entries = self.arg2nodes(entry, self.fs.Entry)
for entry in entries:
entry.set_src_builder(builder)
return entries
def SourceSignatures(self, type):
global _warn_source_signatures_deprecated
if _warn_source_signatures_deprecated:
msg = "The env.SourceSignatures() method is deprecated;\n" + \
"\tconvert your build to use the env.Decider() method instead."
SCons.Warnings.warn(SCons.Warnings.DeprecatedSourceSignaturesWarning, msg)
_warn_source_signatures_deprecated = False
type = self.subst(type)
self.src_sig_type = type
if type == 'MD5':
if not SCons.Util.md5:
raise UserError("MD5 signatures are not available in this version of Python.")
self.decide_source = self._changed_content
elif type == 'timestamp':
self.decide_source = self._changed_timestamp_match
else:
raise UserError("Unknown source signature type '%s'" % type)
def Split(self, arg):
"""This function converts a string or list into a list of strings
or Nodes. This makes things easier for users by allowing files to
be specified as a white-space separated list to be split.
The input rules are:
- A single string containing names separated by spaces. These will be
split apart at the spaces.
- A single Node instance
- A list containing either strings or Node instances. Any strings
in the list are not split at spaces.
In all cases, the function returns a list of Nodes and strings."""
if SCons.Util.is_List(arg):
return list(map(self.subst, arg))
elif SCons.Util.is_String(arg):
return self.subst(arg).split()
else:
return [self.subst(arg)]
def TargetSignatures(self, type):
global _warn_target_signatures_deprecated
if _warn_target_signatures_deprecated:
msg = "The env.TargetSignatures() method is deprecated;\n" + \
"\tconvert your build to use the env.Decider() method instead."
SCons.Warnings.warn(SCons.Warnings.DeprecatedTargetSignaturesWarning, msg)
_warn_target_signatures_deprecated = False
type = self.subst(type)
self.tgt_sig_type = type
if type in ('MD5', 'content'):
if not SCons.Util.md5:
raise UserError("MD5 signatures are not available in this version of Python.")
self.decide_target = self._changed_content
elif type == 'timestamp':
self.decide_target = self._changed_timestamp_match
elif type == 'build':
self.decide_target = self._changed_build
elif type == 'source':
self.decide_target = self._changed_source
else:
raise UserError("Unknown target signature type '%s'"%type)
def Value(self, value, built_value=None):
"""
"""
return SCons.Node.Python.Value(value, built_value)
def VariantDir(self, variant_dir, src_dir, duplicate=1):
variant_dir = self.arg2nodes(variant_dir, self.fs.Dir)[0]
src_dir = self.arg2nodes(src_dir, self.fs.Dir)[0]
self.fs.VariantDir(variant_dir, src_dir, duplicate)
def FindSourceFiles(self, node='.'):
""" returns a list of all source files.
"""
node = self.arg2nodes(node, self.fs.Entry)[0]
sources = []
def build_source(ss):
for s in ss:
if isinstance(s, SCons.Node.FS.Dir):
build_source(s.all_children())
elif s.has_builder():
build_source(s.sources)
elif isinstance(s.disambiguate(), SCons.Node.FS.File):
sources.append(s)
build_source(node.all_children())
# THIS CODE APPEARS TO HAVE NO EFFECT
# # get the final srcnode for all nodes, this means stripping any
# # attached build node by calling the srcnode function
# for file in sources:
# srcnode = file.srcnode()
# while srcnode != file.srcnode():
# srcnode = file.srcnode()
# ------------------------------------------------------------------
# Sure!, the above code is like:
#
# a = b
# while a != b:
# a = b
# return c
#
# Let's do the job as below:
def final_source(node):
while (node != node.srcnode()):
node = node.srcnode()
return node
sources = map( final_source, sources );
# remove duplicates
return list(set(sources))
def FindInstalledFiles(self):
""" returns the list of all targets of the Install and InstallAs Builder.
"""
from SCons.Tool import install
if install._UNIQUE_INSTALLED_FILES is None:
install._UNIQUE_INSTALLED_FILES = SCons.Util.uniquer_hashables(install._INSTALLED_FILES)
return install._UNIQUE_INSTALLED_FILES
class OverrideEnvironment(Base):
"""A proxy that overrides variables in a wrapped construction
environment by returning values from an overrides dictionary in
preference to values from the underlying subject environment.
This is a lightweight (I hope) proxy that passes through most use of
attributes to the underlying Environment.Base class, but has just
enough additional methods defined to act like a real construction
environment with overridden values. It can wrap either a Base
construction environment, or another OverrideEnvironment, which
can in turn nest arbitrary OverrideEnvironments...
Note that we do *not* call the underlying base class
(SubsitutionEnvironment) initialization, because we get most of those
from proxying the attributes of the subject construction environment.
But because we subclass SubstitutionEnvironment, this class also
has inherited arg2nodes() and subst*() methods; those methods can't
be proxied because they need *this* object's methods to fetch the
values from the overrides dictionary.
"""
def __init__(self, subject, overrides={}):
if __debug__: logInstanceCreation(self, 'Environment.OverrideEnvironment')
self.__dict__['__subject'] = subject
self.__dict__['overrides'] = overrides
# Methods that make this class act like a proxy.
def __getattr__(self, name):
return getattr(self.__dict__['__subject'], name)
def __setattr__(self, name, value):
setattr(self.__dict__['__subject'], name, value)
# Methods that make this class act like a dictionary.
def __getitem__(self, key):
try:
return self.__dict__['overrides'][key]
except KeyError:
return self.__dict__['__subject'].__getitem__(key)
def __setitem__(self, key, value):
if not is_valid_construction_var(key):
raise SCons.Errors.UserError("Illegal construction variable `%s'" % key)
self.__dict__['overrides'][key] = value
def __delitem__(self, key):
try:
del self.__dict__['overrides'][key]
except KeyError:
deleted = 0
else:
deleted = 1
try:
result = self.__dict__['__subject'].__delitem__(key)
except KeyError:
if not deleted:
raise
result = None
return result
def get(self, key, default=None):
"""Emulates the get() method of dictionaries."""
try:
return self.__dict__['overrides'][key]
except KeyError:
return self.__dict__['__subject'].get(key, default)
def has_key(self, key):
try:
self.__dict__['overrides'][key]
return 1
except KeyError:
return key in self.__dict__['__subject']
def __contains__(self, key):
if self.__dict__['overrides'].__contains__(key):
return 1
return self.__dict__['__subject'].__contains__(key)
def Dictionary(self):
"""Emulates the items() method of dictionaries."""
d = self.__dict__['__subject'].Dictionary().copy()
d.update(self.__dict__['overrides'])
return d
def items(self):
"""Emulates the items() method of dictionaries."""
return list(self.Dictionary().items())
# Overridden private construction environment methods.
def _update(self, dict):
"""Update an environment's values directly, bypassing the normal
checks that occur when users try to set items.
"""
self.__dict__['overrides'].update(dict)
def gvars(self):
return self.__dict__['__subject'].gvars()
def lvars(self):
lvars = self.__dict__['__subject'].lvars()
lvars.update(self.__dict__['overrides'])
return lvars
# Overridden public construction environment methods.
def Replace(self, **kw):
kw = copy_non_reserved_keywords(kw)
self.__dict__['overrides'].update(semi_deepcopy(kw))
# The entry point that will be used by the external world
# to refer to a construction environment. This allows the wrapper
# interface to extend a construction environment for its own purposes
# by subclassing SCons.Environment.Base and then assigning the
# class to SCons.Environment.Environment.
Environment = Base
# An entry point for returning a proxy subclass instance that overrides
# the subst*() methods so they don't actually perform construction
# variable substitution. This is specifically intended to be the shim
# layer in between global function calls (which don't want construction
# variable substitution) and the DefaultEnvironment() (which would
# substitute variables if left to its own devices)."""
#
# We have to wrap this in a function that allows us to delay definition of
# the class until it's necessary, so that when it subclasses Environment
# it will pick up whatever Environment subclass the wrapper interface
# might have assigned to SCons.Environment.Environment.
def NoSubstitutionProxy(subject):
class _NoSubstitutionProxy(Environment):
def __init__(self, subject):
self.__dict__['__subject'] = subject
def __getattr__(self, name):
return getattr(self.__dict__['__subject'], name)
def __setattr__(self, name, value):
return setattr(self.__dict__['__subject'], name, value)
def executor_to_lvars(self, kwdict):
if kwdict.has_key('executor'):
kwdict['lvars'] = kwdict['executor'].get_lvars()
del kwdict['executor']
else:
kwdict['lvars'] = {}
def raw_to_mode(self, dict):
try:
raw = dict['raw']
except KeyError:
pass
else:
del dict['raw']
dict['mode'] = raw
def subst(self, string, *args, **kwargs):
return string
def subst_kw(self, kw, *args, **kwargs):
return kw
def subst_list(self, string, *args, **kwargs):
nargs = (string, self,) + args
nkw = kwargs.copy()
nkw['gvars'] = {}
self.executor_to_lvars(nkw)
self.raw_to_mode(nkw)
return SCons.Subst.scons_subst_list(*nargs, **nkw)
def subst_target_source(self, string, *args, **kwargs):
nargs = (string, self,) + args
nkw = kwargs.copy()
nkw['gvars'] = {}
self.executor_to_lvars(nkw)
self.raw_to_mode(nkw)
return SCons.Subst.scons_subst(*nargs, **nkw)
return _NoSubstitutionProxy(subject)
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4:
|