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
|
/*
* Copyright (c) 1988, 1989, 1990, 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1989 by Berkeley Softworks
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Adam de Boor.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)suff.c 8.4 (Berkeley) 3/21/94
*/
#ifndef lint
#include <sys/cdefs.h>
__RCSID("$FreeBSD$");
#endif /* not lint */
/*-
* suff.c --
* Functions to maintain suffix lists and find implicit dependents
* using suffix transformation rules
*
* Interface:
* Suff_Init Initialize all things to do with suffixes.
*
* Suff_End Cleanup the module
*
* Suff_DoPaths This function is used to make life easier
* when searching for a file according to its
* suffix. It takes the global search path,
* as defined using the .PATH: target, and appends
* its directories to the path of each of the
* defined suffixes, as specified using
* .PATH<suffix>: targets. In addition, all
* directories given for suffixes labeled as
* include files or libraries, using the .INCLUDES
* or .LIBS targets, are played with using
* Dir_MakeFlags to create the .INCLUDES and
* .LIBS global variables.
*
* Suff_ClearSuffixes Clear out all the suffixes and defined
* transformations.
*
* Suff_IsTransform Return TRUE if the passed string is the lhs
* of a transformation rule.
*
* Suff_AddSuffix Add the passed string as another known suffix.
*
* Suff_GetPath Return the search path for the given suffix.
*
* Suff_AddInclude Mark the given suffix as denoting an include
* file.
*
* Suff_AddLib Mark the given suffix as denoting a library.
*
* Suff_AddTransform Add another transformation to the suffix
* graph. Returns GNode suitable for framing, I
* mean, tacking commands, attributes, etc. on.
*
* Suff_SetNull Define the suffix to consider the suffix of
* any file that doesn't have a known one.
*
* Suff_FindDeps Find implicit sources for and the location of
* a target based on its suffix. Returns the
* bottom-most node added to the graph or NILGNODE
* if the target had no implicit sources.
*/
#include <stdio.h>
#include "make.h"
#include "hash.h"
#include "dir.h"
static Lst sufflist; /* Lst of suffixes */
static Lst suffClean; /* Lst of suffixes to be cleaned */
static Lst srclist; /* Lst of sources */
static Lst transforms; /* Lst of transformation rules */
static int sNum = 0; /* Counter for assigning suffix numbers */
/*
* Structure describing an individual suffix.
*/
typedef struct _Suff {
char *name; /* The suffix itself */
int nameLen; /* Length of the suffix */
short flags; /* Type of suffix */
#define SUFF_INCLUDE 0x01 /* One which is #include'd */
#define SUFF_LIBRARY 0x02 /* One which contains a library */
#define SUFF_NULL 0x04 /* The empty suffix */
Lst searchPath; /* The path along which files of this suffix
* may be found */
int sNum; /* The suffix number */
int refCount; /* Reference count of list membership */
Lst parents; /* Suffixes we have a transformation to */
Lst children; /* Suffixes we have a transformation from */
Lst ref; /* List of lists this suffix is referenced */
} Suff;
/*
* Structure used in the search for implied sources.
*/
typedef struct _Src {
char *file; /* The file to look for */
char *pref; /* Prefix from which file was formed */
Suff *suff; /* The suffix on the file */
struct _Src *parent; /* The Src for which this is a source */
GNode *node; /* The node describing the file */
int children; /* Count of existing children (so we don't free
* this thing too early or never nuke it) */
#ifdef DEBUG_SRC
Lst cp; /* Debug; children list */
#endif
} Src;
/*
* A structure for passing more than one argument to the Lst-library-invoked
* function...
*/
typedef struct {
Lst l;
Src *s;
} LstSrc;
static Suff *suffNull; /* The NULL suffix for this run */
static Suff *emptySuff; /* The empty suffix required for POSIX
* single-suffix transformation rules */
static char *SuffStrIsPrefix __P((char *, char *));
static char *SuffSuffIsSuffix __P((Suff *, char *));
static int SuffSuffIsSuffixP __P((ClientData, ClientData));
static int SuffSuffHasNameP __P((ClientData, ClientData));
static int SuffSuffIsPrefix __P((ClientData, ClientData));
static int SuffGNHasNameP __P((ClientData, ClientData));
static void SuffFree __P((ClientData));
static void SuffInsert __P((Lst, Suff *));
static void SuffRemove __P((Lst, Suff *));
static Boolean SuffParseTransform __P((char *, Suff **, Suff **));
static int SuffRebuildGraph __P((ClientData, ClientData));
static int SuffAddSrc __P((ClientData, ClientData));
static int SuffRemoveSrc __P((Lst));
static void SuffAddLevel __P((Lst, Src *));
static Src *SuffFindThem __P((Lst, Lst));
static Src *SuffFindCmds __P((Src *, Lst));
static int SuffExpandChildren __P((ClientData, ClientData));
static Boolean SuffApplyTransform __P((GNode *, GNode *, Suff *, Suff *));
static void SuffFindDeps __P((GNode *, Lst));
static void SuffFindArchiveDeps __P((GNode *, Lst));
static void SuffFindNormalDeps __P((GNode *, Lst));
static int SuffPrintName __P((ClientData, ClientData));
static int SuffPrintSuff __P((ClientData, ClientData));
static int SuffPrintTrans __P((ClientData, ClientData));
/*************** Lst Predicates ****************/
/*-
*-----------------------------------------------------------------------
* SuffStrIsPrefix --
* See if pref is a prefix of str.
*
* Results:
* NULL if it ain't, pointer to character in str after prefix if so
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static char *
SuffStrIsPrefix (pref, str)
register char *pref; /* possible prefix */
register char *str; /* string to check */
{
while (*str && *pref == *str) {
pref++;
str++;
}
return (*pref ? NULL : str);
}
/*-
*-----------------------------------------------------------------------
* SuffSuffIsSuffix --
* See if suff is a suffix of str. Str should point to THE END of the
* string to check. (THE END == the null byte)
*
* Results:
* NULL if it ain't, pointer to character in str before suffix if
* it is.
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static char *
SuffSuffIsSuffix (s, str)
register Suff *s; /* possible suffix */
char *str; /* string to examine */
{
register char *p1; /* Pointer into suffix name */
register char *p2; /* Pointer into string being examined */
p1 = s->name + s->nameLen;
p2 = str;
while (p1 >= s->name && *p1 == *p2) {
p1--;
p2--;
}
return (p1 == s->name - 1 ? p2 : NULL);
}
/*-
*-----------------------------------------------------------------------
* SuffSuffIsSuffixP --
* Predicate form of SuffSuffIsSuffix. Passed as the callback function
* to Lst_Find.
*
* Results:
* 0 if the suffix is the one desired, non-zero if not.
*
* Side Effects:
* None.
*
*-----------------------------------------------------------------------
*/
static int
SuffSuffIsSuffixP(s, str)
ClientData s;
ClientData str;
{
return(!SuffSuffIsSuffix((Suff *) s, (char *) str));
}
/*-
*-----------------------------------------------------------------------
* SuffSuffHasNameP --
* Callback procedure for finding a suffix based on its name. Used by
* Suff_GetPath.
*
* Results:
* 0 if the suffix is of the given name. non-zero otherwise.
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static int
SuffSuffHasNameP (s, sname)
ClientData s; /* Suffix to check */
ClientData sname; /* Desired name */
{
return (strcmp ((char *) sname, ((Suff *) s)->name));
}
/*-
*-----------------------------------------------------------------------
* SuffSuffIsPrefix --
* See if the suffix described by s is a prefix of the string. Care
* must be taken when using this to search for transformations and
* what-not, since there could well be two suffixes, one of which
* is a prefix of the other...
*
* Results:
* 0 if s is a prefix of str. non-zero otherwise
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static int
SuffSuffIsPrefix (s, str)
ClientData s; /* suffix to compare */
ClientData str; /* string to examine */
{
return (SuffStrIsPrefix (((Suff *) s)->name, (char *) str) == NULL ? 1 : 0);
}
/*-
*-----------------------------------------------------------------------
* SuffGNHasNameP --
* See if the graph node has the desired name
*
* Results:
* 0 if it does. non-zero if it doesn't
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static int
SuffGNHasNameP (gn, name)
ClientData gn; /* current node we're looking at */
ClientData name; /* name we're looking for */
{
return (strcmp ((char *) name, ((GNode *) gn)->name));
}
/*********** Maintenance Functions ************/
/*-
*-----------------------------------------------------------------------
* SuffFree --
* Free up all memory associated with the given suffix structure.
*
* Results:
* none
*
* Side Effects:
* the suffix entry is detroyed
*-----------------------------------------------------------------------
*/
static void
SuffFree (sp)
ClientData sp;
{
Suff *s = (Suff *) sp;
if (s == suffNull)
suffNull = NULL;
if (s == emptySuff)
emptySuff = NULL;
Lst_Destroy (s->ref, NOFREE);
Lst_Destroy (s->children, NOFREE);
Lst_Destroy (s->parents, NOFREE);
Lst_Destroy (s->searchPath, Dir_Destroy);
free ((Address)s->name);
free ((Address)s);
}
/*-
*-----------------------------------------------------------------------
* SuffRemove --
* Remove the suffix into the list
*
* Results:
* None
*
* Side Effects:
* The reference count for the suffix is decremented
*-----------------------------------------------------------------------
*/
static void
SuffRemove(l, s)
Lst l;
Suff *s;
{
LstNode ln = Lst_Member(l, (ClientData)s);
if (ln != NILLNODE) {
Lst_Remove(l, ln);
s->refCount--;
}
}
/*-
*-----------------------------------------------------------------------
* SuffInsert --
* Insert the suffix into the list keeping the list ordered by suffix
* numbers.
*
* Results:
* None
*
* Side Effects:
* The reference count of the suffix is incremented
*-----------------------------------------------------------------------
*/
static void
SuffInsert (l, s)
Lst l; /* the list where in s should be inserted */
Suff *s; /* the suffix to insert */
{
LstNode ln; /* current element in l we're examining */
Suff *s2 = NULL; /* the suffix descriptor in this element */
if (Lst_Open (l) == FAILURE) {
return;
}
while ((ln = Lst_Next (l)) != NILLNODE) {
s2 = (Suff *) Lst_Datum (ln);
if (s2->sNum >= s->sNum) {
break;
}
}
Lst_Close (l);
if (DEBUG(SUFF)) {
printf("inserting %s(%d)...", s->name, s->sNum);
}
if (ln == NILLNODE) {
if (DEBUG(SUFF)) {
printf("at end of list\n");
}
(void)Lst_AtEnd (l, (ClientData)s);
s->refCount++;
(void)Lst_AtEnd(s->ref, (ClientData) l);
} else if (s2->sNum != s->sNum) {
if (DEBUG(SUFF)) {
printf("before %s(%d)\n", s2->name, s2->sNum);
}
(void)Lst_Insert (l, ln, (ClientData)s);
s->refCount++;
(void)Lst_AtEnd(s->ref, (ClientData) l);
} else if (DEBUG(SUFF)) {
printf("already there\n");
}
}
/*-
*-----------------------------------------------------------------------
* Suff_ClearSuffixes --
* This is gross. Nuke the list of suffixes but keep all transformation
* rules around. The transformation graph is destroyed in this process,
* but we leave the list of rules so when a new graph is formed the rules
* will remain.
* This function is called from the parse module when a
* .SUFFIXES:\n line is encountered.
*
* Results:
* none
*
* Side Effects:
* the sufflist and its graph nodes are destroyed
*-----------------------------------------------------------------------
*/
void
Suff_ClearSuffixes ()
{
Lst_Concat (suffClean, sufflist, LST_CONCLINK);
sufflist = Lst_Init(FALSE);
sNum = 0;
suffNull = emptySuff;
}
/*-
*-----------------------------------------------------------------------
* SuffParseTransform --
* Parse a transformation string to find its two component suffixes.
*
* Results:
* TRUE if the string is a valid transformation and FALSE otherwise.
*
* Side Effects:
* The passed pointers are overwritten.
*
*-----------------------------------------------------------------------
*/
static Boolean
SuffParseTransform(str, srcPtr, targPtr)
char *str; /* String being parsed */
Suff **srcPtr; /* Place to store source of trans. */
Suff **targPtr; /* Place to store target of trans. */
{
register LstNode srcLn; /* element in suffix list of trans source*/
register Suff *src; /* Source of transformation */
register LstNode targLn; /* element in suffix list of trans target*/
register char *str2; /* Extra pointer (maybe target suffix) */
LstNode singleLn; /* element in suffix list of any suffix
* that exactly matches str */
Suff *single = NULL;/* Source of possible transformation to
* null suffix */
srcLn = NILLNODE;
singleLn = NILLNODE;
/*
* Loop looking first for a suffix that matches the start of the
* string and then for one that exactly matches the rest of it. If
* we can find two that meet these criteria, we've successfully
* parsed the string.
*/
for (;;) {
if (srcLn == NILLNODE) {
srcLn = Lst_Find(sufflist, (ClientData)str, SuffSuffIsPrefix);
} else {
srcLn = Lst_FindFrom (sufflist, Lst_Succ(srcLn), (ClientData)str,
SuffSuffIsPrefix);
}
if (srcLn == NILLNODE) {
/*
* Ran out of source suffixes -- no such rule
*/
if (singleLn != NILLNODE) {
/*
* Not so fast Mr. Smith! There was a suffix that encompassed
* the entire string, so we assume it was a transformation
* to the null suffix (thank you POSIX). We still prefer to
* find a double rule over a singleton, hence we leave this
* check until the end.
*
* XXX: Use emptySuff over suffNull?
*/
*srcPtr = single;
*targPtr = suffNull;
return(TRUE);
}
return (FALSE);
}
src = (Suff *) Lst_Datum (srcLn);
str2 = str + src->nameLen;
if (*str2 == '\0') {
single = src;
singleLn = srcLn;
} else {
targLn = Lst_Find(sufflist, (ClientData)str2, SuffSuffHasNameP);
if (targLn != NILLNODE) {
*srcPtr = src;
*targPtr = (Suff *)Lst_Datum(targLn);
return (TRUE);
}
}
}
}
/*-
*-----------------------------------------------------------------------
* Suff_IsTransform --
* Return TRUE if the given string is a transformation rule
*
*
* Results:
* TRUE if the string is a concatenation of two known suffixes.
* FALSE otherwise
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
Boolean
Suff_IsTransform (str)
char *str; /* string to check */
{
Suff *src, *targ;
return (SuffParseTransform(str, &src, &targ));
}
/*-
*-----------------------------------------------------------------------
* Suff_AddTransform --
* Add the transformation rule described by the line to the
* list of rules and place the transformation itself in the graph
*
* Results:
* The node created for the transformation in the transforms list
*
* Side Effects:
* The node is placed on the end of the transforms Lst and links are
* made between the two suffixes mentioned in the target name
*-----------------------------------------------------------------------
*/
GNode *
Suff_AddTransform (line)
char *line; /* name of transformation to add */
{
GNode *gn; /* GNode of transformation rule */
Suff *s, /* source suffix */
*t; /* target suffix */
LstNode ln; /* Node for existing transformation */
ln = Lst_Find (transforms, (ClientData)line, SuffGNHasNameP);
if (ln == NILLNODE) {
/*
* Make a new graph node for the transformation. It will be filled in
* by the Parse module.
*/
gn = Targ_NewGN (line);
(void)Lst_AtEnd (transforms, (ClientData)gn);
} else {
/*
* New specification for transformation rule. Just nuke the old list
* of commands so they can be filled in again... We don't actually
* free the commands themselves, because a given command can be
* attached to several different transformations.
*/
gn = (GNode *) Lst_Datum (ln);
Lst_Destroy (gn->commands, NOFREE);
Lst_Destroy (gn->children, NOFREE);
gn->commands = Lst_Init (FALSE);
gn->children = Lst_Init (FALSE);
}
gn->type = OP_TRANSFORM;
(void)SuffParseTransform(line, &s, &t);
/*
* link the two together in the proper relationship and order
*/
if (DEBUG(SUFF)) {
printf("defining transformation from `%s' to `%s'\n",
s->name, t->name);
}
SuffInsert (t->children, s);
SuffInsert (s->parents, t);
return (gn);
}
/*-
*-----------------------------------------------------------------------
* Suff_EndTransform --
* Handle the finish of a transformation definition, removing the
* transformation from the graph if it has neither commands nor
* sources. This is a callback procedure for the Parse module via
* Lst_ForEach
*
* Results:
* === 0
*
* Side Effects:
* If the node has no commands or children, the children and parents
* lists of the affected suffices are altered.
*
*-----------------------------------------------------------------------
*/
int
Suff_EndTransform(gnp, dummy)
ClientData gnp; /* Node for transformation */
ClientData dummy; /* Node for transformation */
{
GNode *gn = (GNode *) gnp;
if ((gn->type & OP_TRANSFORM) && Lst_IsEmpty(gn->commands) &&
Lst_IsEmpty(gn->children))
{
Suff *s, *t;
(void)SuffParseTransform(gn->name, &s, &t);
if (DEBUG(SUFF)) {
printf("deleting transformation from `%s' to `%s'\n",
s->name, t->name);
}
/*
* Remove the source from the target's children list. We check for a
* nil return to handle a beanhead saying something like
* .c.o .c.o:
*
* We'll be called twice when the next target is seen, but .c and .o
* are only linked once...
*/
SuffRemove(t->children, s);
/*
* Remove the target from the source's parents list
*/
SuffRemove(s->parents, t);
} else if ((gn->type & OP_TRANSFORM) && DEBUG(SUFF)) {
printf("transformation %s complete\n", gn->name);
}
return(dummy ? 0 : 0);
}
/*-
*-----------------------------------------------------------------------
* SuffRebuildGraph --
* Called from Suff_AddSuffix via Lst_ForEach to search through the
* list of existing transformation rules and rebuild the transformation
* graph when it has been destroyed by Suff_ClearSuffixes. If the
* given rule is a transformation involving this suffix and another,
* existing suffix, the proper relationship is established between
* the two.
*
* Results:
* Always 0.
*
* Side Effects:
* The appropriate links will be made between this suffix and
* others if transformation rules exist for it.
*
*-----------------------------------------------------------------------
*/
static int
SuffRebuildGraph(transformp, sp)
ClientData transformp; /* Transformation to test */
ClientData sp; /* Suffix to rebuild */
{
GNode *transform = (GNode *) transformp;
Suff *s = (Suff *) sp;
char *cp;
LstNode ln;
Suff *s2;
/*
* First see if it is a transformation from this suffix.
*/
cp = SuffStrIsPrefix(s->name, transform->name);
if (cp != (char *)NULL) {
ln = Lst_Find(sufflist, (ClientData)cp, SuffSuffHasNameP);
if (ln != NILLNODE) {
/*
* Found target. Link in and return, since it can't be anything
* else.
*/
s2 = (Suff *)Lst_Datum(ln);
SuffInsert(s2->children, s);
SuffInsert(s->parents, s2);
return(0);
}
}
/*
* Not from, maybe to?
*/
cp = SuffSuffIsSuffix(s, transform->name + strlen(transform->name));
if (cp != (char *)NULL) {
/*
* Null-terminate the source suffix in order to find it.
*/
cp[1] = '\0';
ln = Lst_Find(sufflist, (ClientData)transform->name, SuffSuffHasNameP);
/*
* Replace the start of the target suffix
*/
cp[1] = s->name[0];
if (ln != NILLNODE) {
/*
* Found it -- establish the proper relationship
*/
s2 = (Suff *)Lst_Datum(ln);
SuffInsert(s->children, s2);
SuffInsert(s2->parents, s);
}
}
return(0);
}
/*-
*-----------------------------------------------------------------------
* Suff_AddSuffix --
* Add the suffix in string to the end of the list of known suffixes.
* Should we restructure the suffix graph? Make doesn't...
*
* Results:
* None
*
* Side Effects:
* A GNode is created for the suffix and a Suff structure is created and
* added to the suffixes list unless the suffix was already known.
*-----------------------------------------------------------------------
*/
void
Suff_AddSuffix (str)
char *str; /* the name of the suffix to add */
{
Suff *s; /* new suffix descriptor */
LstNode ln;
ln = Lst_Find (sufflist, (ClientData)str, SuffSuffHasNameP);
if (ln == NILLNODE) {
s = (Suff *) emalloc (sizeof (Suff));
s->name = estrdup (str);
s->nameLen = strlen (s->name);
s->searchPath = Lst_Init (FALSE);
s->children = Lst_Init (FALSE);
s->parents = Lst_Init (FALSE);
s->ref = Lst_Init (FALSE);
s->sNum = sNum++;
s->flags = 0;
s->refCount = 0;
(void)Lst_AtEnd (sufflist, (ClientData)s);
/*
* Look for any existing transformations from or to this suffix.
* XXX: Only do this after a Suff_ClearSuffixes?
*/
Lst_ForEach (transforms, SuffRebuildGraph, (ClientData)s);
}
}
/*-
*-----------------------------------------------------------------------
* Suff_GetPath --
* Return the search path for the given suffix, if it's defined.
*
* Results:
* The searchPath for the desired suffix or NILLST if the suffix isn't
* defined.
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
Lst
Suff_GetPath (sname)
char *sname;
{
LstNode ln;
Suff *s;
ln = Lst_Find (sufflist, (ClientData)sname, SuffSuffHasNameP);
if (ln == NILLNODE) {
return (NILLST);
} else {
s = (Suff *) Lst_Datum (ln);
return (s->searchPath);
}
}
/*-
*-----------------------------------------------------------------------
* Suff_DoPaths --
* Extend the search paths for all suffixes to include the default
* search path.
*
* Results:
* None.
*
* Side Effects:
* The searchPath field of all the suffixes is extended by the
* directories in dirSearchPath. If paths were specified for the
* ".h" suffix, the directories are stuffed into a global variable
* called ".INCLUDES" with each directory preceeded by a -I. The same
* is done for the ".a" suffix, except the variable is called
* ".LIBS" and the flag is -L.
*-----------------------------------------------------------------------
*/
void
Suff_DoPaths()
{
register Suff *s;
register LstNode ln;
char *ptr;
Lst inIncludes; /* Cumulative .INCLUDES path */
Lst inLibs; /* Cumulative .LIBS path */
if (Lst_Open (sufflist) == FAILURE) {
return;
}
inIncludes = Lst_Init(FALSE);
inLibs = Lst_Init(FALSE);
while ((ln = Lst_Next (sufflist)) != NILLNODE) {
s = (Suff *) Lst_Datum (ln);
if (!Lst_IsEmpty (s->searchPath)) {
#ifdef INCLUDES
if (s->flags & SUFF_INCLUDE) {
Dir_Concat(inIncludes, s->searchPath);
}
#endif /* INCLUDES */
#ifdef LIBRARIES
if (s->flags & SUFF_LIBRARY) {
Dir_Concat(inLibs, s->searchPath);
}
#endif /* LIBRARIES */
Dir_Concat(s->searchPath, dirSearchPath);
} else {
Lst_Destroy (s->searchPath, Dir_Destroy);
s->searchPath = Lst_Duplicate(dirSearchPath, Dir_CopyDir);
}
}
Var_Set(".INCLUDES", ptr = Dir_MakeFlags("-I", inIncludes), VAR_GLOBAL);
free(ptr);
Var_Set(".LIBS", ptr = Dir_MakeFlags("-L", inLibs), VAR_GLOBAL);
free(ptr);
Lst_Destroy(inIncludes, Dir_Destroy);
Lst_Destroy(inLibs, Dir_Destroy);
Lst_Close (sufflist);
}
/*-
*-----------------------------------------------------------------------
* Suff_AddInclude --
* Add the given suffix as a type of file which gets included.
* Called from the parse module when a .INCLUDES line is parsed.
* The suffix must have already been defined.
*
* Results:
* None.
*
* Side Effects:
* The SUFF_INCLUDE bit is set in the suffix's flags field
*
*-----------------------------------------------------------------------
*/
void
Suff_AddInclude (sname)
char *sname; /* Name of suffix to mark */
{
LstNode ln;
Suff *s;
ln = Lst_Find (sufflist, (ClientData)sname, SuffSuffHasNameP);
if (ln != NILLNODE) {
s = (Suff *) Lst_Datum (ln);
s->flags |= SUFF_INCLUDE;
}
}
/*-
*-----------------------------------------------------------------------
* Suff_AddLib --
* Add the given suffix as a type of file which is a library.
* Called from the parse module when parsing a .LIBS line. The
* suffix must have been defined via .SUFFIXES before this is
* called.
*
* Results:
* None.
*
* Side Effects:
* The SUFF_LIBRARY bit is set in the suffix's flags field
*
*-----------------------------------------------------------------------
*/
void
Suff_AddLib (sname)
char *sname; /* Name of suffix to mark */
{
LstNode ln;
Suff *s;
ln = Lst_Find (sufflist, (ClientData)sname, SuffSuffHasNameP);
if (ln != NILLNODE) {
s = (Suff *) Lst_Datum (ln);
s->flags |= SUFF_LIBRARY;
}
}
/********** Implicit Source Search Functions *********/
/*-
*-----------------------------------------------------------------------
* SuffAddSrc --
* Add a suffix as a Src structure to the given list with its parent
* being the given Src structure. If the suffix is the null suffix,
* the prefix is used unaltered as the file name in the Src structure.
*
* Results:
* always returns 0
*
* Side Effects:
* A Src structure is created and tacked onto the end of the list
*-----------------------------------------------------------------------
*/
static int
SuffAddSrc (sp, lsp)
ClientData sp; /* suffix for which to create a Src structure */
ClientData lsp; /* list and parent for the new Src */
{
Suff *s = (Suff *) sp;
LstSrc *ls = (LstSrc *) lsp;
Src *s2; /* new Src structure */
Src *targ; /* Target structure */
targ = ls->s;
if ((s->flags & SUFF_NULL) && (*s->name != '\0')) {
/*
* If the suffix has been marked as the NULL suffix, also create a Src
* structure for a file with no suffix attached. Two birds, and all
* that...
*/
s2 = (Src *) emalloc (sizeof (Src));
s2->file = estrdup(targ->pref);
s2->pref = targ->pref;
s2->parent = targ;
s2->node = NILGNODE;
s2->suff = s;
s->refCount++;
s2->children = 0;
targ->children += 1;
(void)Lst_AtEnd (ls->l, (ClientData)s2);
#ifdef DEBUG_SRC
s2->cp = Lst_Init(FALSE);
Lst_AtEnd(targ->cp, (ClientData) s2);
printf("1 add %x %x to %x:", targ, s2, ls->l);
Lst_ForEach(ls->l, PrintAddr, (ClientData) 0);
printf("\n");
#endif
}
s2 = (Src *) emalloc (sizeof (Src));
s2->file = str_concat (targ->pref, s->name, 0);
s2->pref = targ->pref;
s2->parent = targ;
s2->node = NILGNODE;
s2->suff = s;
s->refCount++;
s2->children = 0;
targ->children += 1;
(void)Lst_AtEnd (ls->l, (ClientData)s2);
#ifdef DEBUG_SRC
s2->cp = Lst_Init(FALSE);
Lst_AtEnd(targ->cp, (ClientData) s2);
printf("2 add %x %x to %x:", targ, s2, ls->l);
Lst_ForEach(ls->l, PrintAddr, (ClientData) 0);
printf("\n");
#endif
return(0);
}
/*-
*-----------------------------------------------------------------------
* SuffAddLevel --
* Add all the children of targ as Src structures to the given list
*
* Results:
* None
*
* Side Effects:
* Lots of structures are created and added to the list
*-----------------------------------------------------------------------
*/
static void
SuffAddLevel (l, targ)
Lst l; /* list to which to add the new level */
Src *targ; /* Src structure to use as the parent */
{
LstSrc ls;
ls.s = targ;
ls.l = l;
Lst_ForEach (targ->suff->children, SuffAddSrc, (ClientData)&ls);
}
/*-
*----------------------------------------------------------------------
* SuffRemoveSrc --
* Free all src structures in list that don't have a reference count
*
* Results:
* Ture if an src was removed
*
* Side Effects:
* The memory is free'd.
*----------------------------------------------------------------------
*/
static int
SuffRemoveSrc (l)
Lst l;
{
LstNode ln;
Src *s;
int t = 0;
if (Lst_Open (l) == FAILURE) {
return 0;
}
#ifdef DEBUG_SRC
printf("cleaning %lx: ", (unsigned long) l);
Lst_ForEach(l, PrintAddr, (ClientData) 0);
printf("\n");
#endif
while ((ln = Lst_Next (l)) != NILLNODE) {
s = (Src *) Lst_Datum (ln);
if (s->children == 0) {
free ((Address)s->file);
if (!s->parent)
free((Address)s->pref);
else {
#ifdef DEBUG_SRC
LstNode ln = Lst_Member(s->parent->cp, (ClientData)s);
if (ln != NILLNODE)
Lst_Remove(s->parent->cp, ln);
#endif
--s->parent->children;
}
#ifdef DEBUG_SRC
printf("free: [l=%x] p=%x %d\n", l, s, s->children);
Lst_Destroy(s->cp, NOFREE);
#endif
Lst_Remove(l, ln);
free ((Address)s);
t |= 1;
Lst_Close(l);
return TRUE;
}
#ifdef DEBUG_SRC
else {
printf("keep: [l=%x] p=%x %d: ", l, s, s->children);
Lst_ForEach(s->cp, PrintAddr, (ClientData) 0);
printf("\n");
}
#endif
}
Lst_Close(l);
return t;
}
/*-
*-----------------------------------------------------------------------
* SuffFindThem --
* Find the first existing file/target in the list srcs
*
* Results:
* The lowest structure in the chain of transformations
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static Src *
SuffFindThem (srcs, slst)
Lst srcs; /* list of Src structures to search through */
Lst slst;
{
Src *s; /* current Src */
Src *rs; /* returned Src */
char *ptr;
rs = (Src *) NULL;
while (!Lst_IsEmpty (srcs)) {
s = (Src *) Lst_DeQueue (srcs);
if (DEBUG(SUFF)) {
printf ("\ttrying %s...", s->file);
}
/*
* A file is considered to exist if either a node exists in the
* graph for it or the file actually exists.
*/
if (Targ_FindNode(s->file, TARG_NOCREATE) != NILGNODE) {
#ifdef DEBUG_SRC
printf("remove %x from %x\n", s, srcs);
#endif
rs = s;
break;
}
if ((ptr = Dir_FindFile (s->file, s->suff->searchPath)) != NULL) {
rs = s;
#ifdef DEBUG_SRC
printf("remove %x from %x\n", s, srcs);
#endif
free(ptr);
break;
}
if (DEBUG(SUFF)) {
printf ("not there\n");
}
SuffAddLevel (srcs, s);
Lst_AtEnd(slst, (ClientData) s);
}
if (DEBUG(SUFF) && rs) {
printf ("got it\n");
}
return (rs);
}
/*-
*-----------------------------------------------------------------------
* SuffFindCmds --
* See if any of the children of the target in the Src structure is
* one from which the target can be transformed. If there is one,
* a Src structure is put together for it and returned.
*
* Results:
* The Src structure of the "winning" child, or NIL if no such beast.
*
* Side Effects:
* A Src structure may be allocated.
*
*-----------------------------------------------------------------------
*/
static Src *
SuffFindCmds (targ, slst)
Src *targ; /* Src structure to play with */
Lst slst;
{
LstNode ln; /* General-purpose list node */
register GNode *t, /* Target GNode */
*s; /* Source GNode */
int prefLen;/* The length of the defined prefix */
Suff *suff; /* Suffix on matching beastie */
Src *ret; /* Return value */
char *cp;
t = targ->node;
(void) Lst_Open (t->children);
prefLen = strlen (targ->pref);
while ((ln = Lst_Next (t->children)) != NILLNODE) {
s = (GNode *)Lst_Datum (ln);
cp = strrchr (s->name, '/');
if (cp == (char *)NULL) {
cp = s->name;
} else {
cp++;
}
if (strncmp (cp, targ->pref, prefLen) == 0) {
/*
* The node matches the prefix ok, see if it has a known
* suffix.
*/
ln = Lst_Find (sufflist, (ClientData)&cp[prefLen],
SuffSuffHasNameP);
if (ln != NILLNODE) {
/*
* It even has a known suffix, see if there's a transformation
* defined between the node's suffix and the target's suffix.
*
* XXX: Handle multi-stage transformations here, too.
*/
suff = (Suff *)Lst_Datum (ln);
if (Lst_Member (suff->parents,
(ClientData)targ->suff) != NILLNODE)
{
/*
* Hot Damn! Create a new Src structure to describe
* this transformation (making sure to duplicate the
* source node's name so Suff_FindDeps can free it
* again (ick)), and return the new structure.
*/
ret = (Src *)emalloc (sizeof (Src));
ret->file = estrdup(s->name);
ret->pref = targ->pref;
ret->suff = suff;
suff->refCount++;
ret->parent = targ;
ret->node = s;
ret->children = 0;
targ->children += 1;
#ifdef DEBUG_SRC
ret->cp = Lst_Init(FALSE);
printf("3 add %x %x\n", targ, ret);
Lst_AtEnd(targ->cp, (ClientData) ret);
#endif
Lst_AtEnd(slst, (ClientData) ret);
if (DEBUG(SUFF)) {
printf ("\tusing existing source %s\n", s->name);
}
return (ret);
}
}
}
}
Lst_Close (t->children);
return ((Src *)NULL);
}
/*-
*-----------------------------------------------------------------------
* SuffExpandChildren --
* Expand the names of any children of a given node that contain
* variable invocations or file wildcards into actual targets.
*
* Results:
* === 0 (continue)
*
* Side Effects:
* The expanded node is removed from the parent's list of children,
* and the parent's unmade counter is decremented, but other nodes
* may be added.
*
*-----------------------------------------------------------------------
*/
static int
SuffExpandChildren(cgnp, pgnp)
ClientData cgnp; /* Child to examine */
ClientData pgnp; /* Parent node being processed */
{
GNode *cgn = (GNode *) cgnp;
GNode *pgn = (GNode *) pgnp;
GNode *gn; /* New source 8) */
LstNode prevLN; /* Node after which new source should be put */
LstNode ln; /* List element for old source */
char *cp; /* Expanded value */
/*
* New nodes effectively take the place of the child, so place them
* after the child
*/
prevLN = Lst_Member(pgn->children, (ClientData)cgn);
/*
* First do variable expansion -- this takes precedence over
* wildcard expansion. If the result contains wildcards, they'll be gotten
* to later since the resulting words are tacked on to the end of
* the children list.
*/
if (strchr(cgn->name, '$') != (char *)NULL) {
if (DEBUG(SUFF)) {
printf("Expanding \"%s\"...", cgn->name);
}
cp = Var_Subst(NULL, cgn->name, pgn, TRUE);
if (cp != (char *)NULL) {
Lst members = Lst_Init(FALSE);
if (cgn->type & OP_ARCHV) {
/*
* Node was an archive(member) target, so we want to call
* on the Arch module to find the nodes for us, expanding
* variables in the parent's context.
*/
char *sacrifice = cp;
(void)Arch_ParseArchive(&sacrifice, members, pgn);
} else {
/*
* Break the result into a vector of strings whose nodes
* we can find, then add those nodes to the members list.
* Unfortunately, we can't use brk_string b/c it
* doesn't understand about variable specifications with
* spaces in them...
*/
char *start;
char *initcp = cp; /* For freeing... */
for (start = cp; *start == ' ' || *start == '\t'; start++)
continue;
for (cp = start; *cp != '\0'; cp++) {
if (*cp == ' ' || *cp == '\t') {
/*
* White-space -- terminate element, find the node,
* add it, skip any further spaces.
*/
*cp++ = '\0';
gn = Targ_FindNode(start, TARG_CREATE);
(void)Lst_AtEnd(members, (ClientData)gn);
while (*cp == ' ' || *cp == '\t') {
cp++;
}
/*
* Adjust cp for increment at start of loop, but
* set start to first non-space.
*/
start = cp--;
} else if (*cp == '$') {
/*
* Start of a variable spec -- contact variable module
* to find the end so we can skip over it.
*/
char *junk;
int len;
Boolean doFree;
junk = Var_Parse(cp, pgn, TRUE, &len, &doFree);
if (junk != var_Error) {
cp += len - 1;
}
if (doFree) {
free(junk);
}
} else if (*cp == '\\' && *cp != '\0') {
/*
* Escaped something -- skip over it
*/
cp++;
}
}
if (cp != start) {
/*
* Stuff left over -- add it to the list too
*/
gn = Targ_FindNode(start, TARG_CREATE);
(void)Lst_AtEnd(members, (ClientData)gn);
}
/*
* Point cp back at the beginning again so the variable value
* can be freed.
*/
cp = initcp;
}
/*
* Add all elements of the members list to the parent node.
*/
while(!Lst_IsEmpty(members)) {
gn = (GNode *)Lst_DeQueue(members);
if (DEBUG(SUFF)) {
printf("%s...", gn->name);
}
if (Lst_Member(pgn->children, (ClientData)gn) == NILLNODE) {
(void)Lst_Append(pgn->children, prevLN, (ClientData)gn);
prevLN = Lst_Succ(prevLN);
(void)Lst_AtEnd(gn->parents, (ClientData)pgn);
pgn->unmade++;
}
}
Lst_Destroy(members, NOFREE);
/*
* Free the result
*/
free((char *)cp);
}
/*
* Now the source is expanded, remove it from the list of children to
* keep it from being processed.
*/
ln = Lst_Member(pgn->children, (ClientData)cgn);
pgn->unmade--;
Lst_Remove(pgn->children, ln);
if (DEBUG(SUFF)) {
printf("\n");
}
} else if (Dir_HasWildcards(cgn->name)) {
Lst exp; /* List of expansions */
Lst path; /* Search path along which to expand */
/*
* Find a path along which to expand the word.
*
* If the word has a known suffix, use that path.
* If it has no known suffix and we're allowed to use the null
* suffix, use its path.
* Else use the default system search path.
*/
cp = cgn->name + strlen(cgn->name);
ln = Lst_Find(sufflist, (ClientData)cp, SuffSuffIsSuffixP);
if (DEBUG(SUFF)) {
printf("Wildcard expanding \"%s\"...", cgn->name);
}
if (ln != NILLNODE) {
Suff *s = (Suff *)Lst_Datum(ln);
if (DEBUG(SUFF)) {
printf("suffix is \"%s\"...", s->name);
}
path = s->searchPath;
} else {
/*
* Use default search path
*/
path = dirSearchPath;
}
/*
* Expand the word along the chosen path
*/
exp = Lst_Init(FALSE);
Dir_Expand(cgn->name, path, exp);
while (!Lst_IsEmpty(exp)) {
/*
* Fetch next expansion off the list and find its GNode
*/
cp = (char *)Lst_DeQueue(exp);
if (DEBUG(SUFF)) {
printf("%s...", cp);
}
gn = Targ_FindNode(cp, TARG_CREATE);
/*
* If gn isn't already a child of the parent, make it so and
* up the parent's count of unmade children.
*/
if (Lst_Member(pgn->children, (ClientData)gn) == NILLNODE) {
(void)Lst_Append(pgn->children, prevLN, (ClientData)gn);
prevLN = Lst_Succ(prevLN);
(void)Lst_AtEnd(gn->parents, (ClientData)pgn);
pgn->unmade++;
}
}
/*
* Nuke what's left of the list
*/
Lst_Destroy(exp, NOFREE);
/*
* Now the source is expanded, remove it from the list of children to
* keep it from being processed.
*/
ln = Lst_Member(pgn->children, (ClientData)cgn);
pgn->unmade--;
Lst_Remove(pgn->children, ln);
if (DEBUG(SUFF)) {
printf("\n");
}
}
return(0);
}
/*-
*-----------------------------------------------------------------------
* SuffApplyTransform --
* Apply a transformation rule, given the source and target nodes
* and suffixes.
*
* Results:
* TRUE if successful, FALSE if not.
*
* Side Effects:
* The source and target are linked and the commands from the
* transformation are added to the target node's commands list.
* All attributes but OP_DEPMASK and OP_TRANSFORM are applied
* to the target. The target also inherits all the sources for
* the transformation rule.
*
*-----------------------------------------------------------------------
*/
static Boolean
SuffApplyTransform(tGn, sGn, t, s)
GNode *tGn; /* Target node */
GNode *sGn; /* Source node */
Suff *t; /* Target suffix */
Suff *s; /* Source suffix */
{
LstNode ln; /* General node */
char *tname; /* Name of transformation rule */
GNode *gn; /* Node for same */
if (Lst_Member(tGn->children, (ClientData)sGn) == NILLNODE) {
/*
* Not already linked, so form the proper links between the
* target and source.
*/
(void)Lst_AtEnd(tGn->children, (ClientData)sGn);
(void)Lst_AtEnd(sGn->parents, (ClientData)tGn);
tGn->unmade += 1;
}
if ((sGn->type & OP_OPMASK) == OP_DOUBLEDEP) {
/*
* When a :: node is used as the implied source of a node, we have
* to link all its cohorts in as sources as well. Only the initial
* sGn gets the target in its iParents list, however, as that
* will be sufficient to get the .IMPSRC variable set for tGn
*/
for (ln=Lst_First(sGn->cohorts); ln != NILLNODE; ln=Lst_Succ(ln)) {
gn = (GNode *)Lst_Datum(ln);
if (Lst_Member(tGn->children, (ClientData)gn) == NILLNODE) {
/*
* Not already linked, so form the proper links between the
* target and source.
*/
(void)Lst_AtEnd(tGn->children, (ClientData)gn);
(void)Lst_AtEnd(gn->parents, (ClientData)tGn);
tGn->unmade += 1;
}
}
}
/*
* Locate the transformation rule itself
*/
tname = str_concat(s->name, t->name, 0);
ln = Lst_Find(transforms, (ClientData)tname, SuffGNHasNameP);
free(tname);
if (ln == NILLNODE) {
/*
* Not really such a transformation rule (can happen when we're
* called to link an OP_MEMBER and OP_ARCHV node), so return
* FALSE.
*/
return(FALSE);
}
gn = (GNode *)Lst_Datum(ln);
if (DEBUG(SUFF)) {
printf("\tapplying %s -> %s to \"%s\"\n", s->name, t->name, tGn->name);
}
/*
* Record last child for expansion purposes
*/
ln = Lst_Last(tGn->children);
/*
* Pass the buck to Make_HandleUse to apply the rule
*/
(void)Make_HandleUse(gn, tGn);
/*
* Deal with wildcards and variables in any acquired sources
*/
ln = Lst_Succ(ln);
if (ln != NILLNODE) {
Lst_ForEachFrom(tGn->children, ln,
SuffExpandChildren, (ClientData)tGn);
}
/*
* Keep track of another parent to which this beast is transformed so
* the .IMPSRC variable can be set correctly for the parent.
*/
(void)Lst_AtEnd(sGn->iParents, (ClientData)tGn);
return(TRUE);
}
/*-
*-----------------------------------------------------------------------
* SuffFindArchiveDeps --
* Locate dependencies for an OP_ARCHV node.
*
* Results:
* None
*
* Side Effects:
* Same as Suff_FindDeps
*
*-----------------------------------------------------------------------
*/
static void
SuffFindArchiveDeps(gn, slst)
GNode *gn; /* Node for which to locate dependencies */
Lst slst;
{
char *eoarch; /* End of archive portion */
char *eoname; /* End of member portion */
GNode *mem; /* Node for member */
static char *copy[] = { /* Variables to be copied from the member node */
TARGET, /* Must be first */
PREFIX, /* Must be second */
};
int i; /* Index into copy and vals */
Suff *ms; /* Suffix descriptor for member */
char *name; /* Start of member's name */
/*
* The node is an archive(member) pair. so we must find a
* suffix for both of them.
*/
eoarch = strchr (gn->name, '(');
eoname = strchr (eoarch, ')');
*eoname = '\0'; /* Nuke parentheses during suffix search */
*eoarch = '\0'; /* So a suffix can be found */
name = eoarch + 1;
/*
* To simplify things, call Suff_FindDeps recursively on the member now,
* so we can simply compare the member's .PREFIX and .TARGET variables
* to locate its suffix. This allows us to figure out the suffix to
* use for the archive without having to do a quadratic search over the
* suffix list, backtracking for each one...
*/
mem = Targ_FindNode(name, TARG_CREATE);
SuffFindDeps(mem, slst);
/*
* Create the link between the two nodes right off
*/
if (Lst_Member(gn->children, (ClientData)mem) == NILLNODE) {
(void)Lst_AtEnd(gn->children, (ClientData)mem);
(void)Lst_AtEnd(mem->parents, (ClientData)gn);
gn->unmade += 1;
}
/*
* Copy in the variables from the member node to this one.
*/
for (i = (sizeof(copy)/sizeof(copy[0]))-1; i >= 0; i--) {
char *p1;
Var_Set(copy[i], Var_Value(copy[i], mem, &p1), gn);
efree(p1);
}
ms = mem->suffix;
if (ms == NULL) {
/*
* Didn't know what it was -- use .NULL suffix if not in make mode
*/
if (DEBUG(SUFF)) {
printf("using null suffix\n");
}
ms = suffNull;
}
/*
* Set the other two local variables required for this target.
*/
Var_Set (MEMBER, name, gn);
Var_Set (ARCHIVE, gn->name, gn);
if (ms != NULL) {
/*
* Member has a known suffix, so look for a transformation rule from
* it to a possible suffix of the archive. Rather than searching
* through the entire list, we just look at suffixes to which the
* member's suffix may be transformed...
*/
LstNode ln;
/*
* Use first matching suffix...
*/
ln = Lst_Find(ms->parents, eoarch, SuffSuffIsSuffixP);
if (ln != NILLNODE) {
/*
* Got one -- apply it
*/
if (!SuffApplyTransform(gn, mem, (Suff *)Lst_Datum(ln), ms) &&
DEBUG(SUFF))
{
printf("\tNo transformation from %s -> %s\n",
ms->name, ((Suff *)Lst_Datum(ln))->name);
}
}
}
/*
* Replace the opening and closing parens now we've no need of the separate
* pieces.
*/
*eoarch = '('; *eoname = ')';
/*
* Pretend gn appeared to the left of a dependency operator so
* the user needn't provide a transformation from the member to the
* archive.
*/
if (OP_NOP(gn->type)) {
gn->type |= OP_DEPENDS;
}
/*
* Flag the member as such so we remember to look in the archive for
* its modification time.
*/
mem->type |= OP_MEMBER;
}
/*-
*-----------------------------------------------------------------------
* SuffFindNormalDeps --
* Locate implicit dependencies for regular targets.
*
* Results:
* None.
*
* Side Effects:
* Same as Suff_FindDeps...
*
*-----------------------------------------------------------------------
*/
static void
SuffFindNormalDeps(gn, slst)
GNode *gn; /* Node for which to find sources */
Lst slst;
{
char *eoname; /* End of name */
char *sopref; /* Start of prefix */
LstNode ln; /* Next suffix node to check */
Lst srcs; /* List of sources at which to look */
Lst targs; /* List of targets to which things can be
* transformed. They all have the same file,
* but different suff and pref fields */
Src *bottom; /* Start of found transformation path */
Src *src; /* General Src pointer */
char *pref; /* Prefix to use */
Src *targ; /* General Src target pointer */
eoname = gn->name + strlen(gn->name);
sopref = gn->name;
/*
* Begin at the beginning...
*/
ln = Lst_First(sufflist);
srcs = Lst_Init(FALSE);
targs = Lst_Init(FALSE);
/*
* We're caught in a catch-22 here. On the one hand, we want to use any
* transformation implied by the target's sources, but we can't examine
* the sources until we've expanded any variables/wildcards they may hold,
* and we can't do that until we've set up the target's local variables
* and we can't do that until we know what the proper suffix for the
* target is (in case there are two suffixes one of which is a suffix of
* the other) and we can't know that until we've found its implied
* source, which we may not want to use if there's an existing source
* that implies a different transformation.
*
* In an attempt to get around this, which may not work all the time,
* but should work most of the time, we look for implied sources first,
* checking transformations to all possible suffixes of the target,
* use what we find to set the target's local variables, expand the
* children, then look for any overriding transformations they imply.
* Should we find one, we discard the one we found before.
*/
while (ln != NILLNODE) {
/*
* Look for next possible suffix...
*/
ln = Lst_FindFrom(sufflist, ln, eoname, SuffSuffIsSuffixP);
if (ln != NILLNODE) {
int prefLen; /* Length of the prefix */
Src *targ;
/*
* Allocate a Src structure to which things can be transformed
*/
targ = (Src *)emalloc(sizeof (Src));
targ->file = estrdup(gn->name);
targ->suff = (Suff *)Lst_Datum(ln);
targ->suff->refCount++;
targ->node = gn;
targ->parent = (Src *)NULL;
targ->children = 0;
#ifdef DEBUG_SRC
targ->cp = Lst_Init(FALSE);
#endif
/*
* Allocate room for the prefix, whose end is found by subtracting
* the length of the suffix from the end of the name.
*/
prefLen = (eoname - targ->suff->nameLen) - sopref;
targ->pref = emalloc(prefLen + 1);
memcpy(targ->pref, sopref, prefLen);
targ->pref[prefLen] = '\0';
/*
* Add nodes from which the target can be made
*/
SuffAddLevel(srcs, targ);
/*
* Record the target so we can nuke it
*/
(void)Lst_AtEnd(targs, (ClientData)targ);
/*
* Search from this suffix's successor...
*/
ln = Lst_Succ(ln);
}
}
/*
* Handle target of unknown suffix...
*/
if (Lst_IsEmpty(targs) && suffNull != NULL) {
if (DEBUG(SUFF)) {
printf("\tNo known suffix on %s. Using .NULL suffix\n", gn->name);
}
targ = (Src *)emalloc(sizeof (Src));
targ->file = estrdup(gn->name);
targ->suff = suffNull;
targ->suff->refCount++;
targ->node = gn;
targ->parent = (Src *)NULL;
targ->children = 0;
targ->pref = estrdup(sopref);
#ifdef DEBUG_SRC
targ->cp = Lst_Init(FALSE);
#endif
/*
* Only use the default suffix rules if we don't have commands
* or dependencies defined for this gnode
*/
if (Lst_IsEmpty(gn->commands) && Lst_IsEmpty(gn->children))
SuffAddLevel(srcs, targ);
else {
if (DEBUG(SUFF))
printf("not ");
}
if (DEBUG(SUFF))
printf("adding suffix rules\n");
(void)Lst_AtEnd(targs, (ClientData)targ);
}
/*
* Using the list of possible sources built up from the target suffix(es),
* try and find an existing file/target that matches.
*/
bottom = SuffFindThem(srcs, slst);
if (bottom == (Src *)NULL) {
/*
* No known transformations -- use the first suffix found for setting
* the local variables.
*/
if (!Lst_IsEmpty(targs)) {
targ = (Src *)Lst_Datum(Lst_First(targs));
} else {
targ = (Src *)NULL;
}
} else {
/*
* Work up the transformation path to find the suffix of the
* target to which the transformation was made.
*/
for (targ = bottom; targ->parent != NULL; targ = targ->parent)
continue;
}
/*
* The .TARGET variable we always set to be the name at this point,
* since it's only set to the path if the thing is only a source and
* if it's only a source, it doesn't matter what we put here as far
* as expanding sources is concerned, since it has none...
*/
Var_Set(TARGET, gn->name, gn);
pref = (targ != NULL) ? targ->pref : gn->name;
Var_Set(PREFIX, pref, gn);
/*
* Now we've got the important local variables set, expand any sources
* that still contain variables or wildcards in their names.
*/
Lst_ForEach(gn->children, SuffExpandChildren, (ClientData)gn);
if (targ == NULL) {
if (DEBUG(SUFF)) {
printf("\tNo valid suffix on %s\n", gn->name);
}
sfnd_abort:
/*
* Deal with finding the thing on the default search path if the
* node is only a source (not on the lhs of a dependency operator
* or [XXX] it has neither children or commands).
*/
if (OP_NOP(gn->type) ||
(Lst_IsEmpty(gn->children) && Lst_IsEmpty(gn->commands)))
{
gn->path = Dir_FindFile(gn->name,
(targ == NULL ? dirSearchPath :
targ->suff->searchPath));
if (gn->path != NULL) {
char *ptr;
Var_Set(TARGET, gn->path, gn);
if (targ != NULL) {
/*
* Suffix known for the thing -- trim the suffix off
* the path to form the proper .PREFIX variable.
*/
int savep = strlen(gn->path) - targ->suff->nameLen;
char savec;
if (gn->suffix)
gn->suffix->refCount--;
gn->suffix = targ->suff;
gn->suffix->refCount++;
savec = gn->path[savep];
gn->path[savep] = '\0';
if ((ptr = strrchr(gn->path, '/')) != NULL)
ptr++;
else
ptr = gn->path;
Var_Set(PREFIX, ptr, gn);
gn->path[savep] = savec;
} else {
/*
* The .PREFIX gets the full path if the target has
* no known suffix.
*/
if (gn->suffix)
gn->suffix->refCount--;
gn->suffix = NULL;
if ((ptr = strrchr(gn->path, '/')) != NULL)
ptr++;
else
ptr = gn->path;
Var_Set(PREFIX, ptr, gn);
}
}
} else {
/*
* Not appropriate to search for the thing -- set the
* path to be the name so Dir_MTime won't go grovelling for
* it.
*/
if (gn->suffix)
gn->suffix->refCount--;
gn->suffix = (targ == NULL) ? NULL : targ->suff;
if (gn->suffix)
gn->suffix->refCount++;
efree(gn->path);
gn->path = estrdup(gn->name);
}
goto sfnd_return;
}
/*
* If the suffix indicates that the target is a library, mark that in
* the node's type field.
*/
if (targ->suff->flags & SUFF_LIBRARY) {
gn->type |= OP_LIB;
}
/*
* Check for overriding transformation rule implied by sources
*/
if (!Lst_IsEmpty(gn->children)) {
src = SuffFindCmds(targ, slst);
if (src != (Src *)NULL) {
/*
* Free up all the Src structures in the transformation path
* up to, but not including, the parent node.
*/
while (bottom && bottom->parent != NULL) {
if (Lst_Member(slst, (ClientData) bottom) == NILLNODE) {
Lst_AtEnd(slst, (ClientData) bottom);
}
bottom = bottom->parent;
}
bottom = src;
}
}
if (bottom == NULL) {
/*
* No idea from where it can come -- return now.
*/
goto sfnd_abort;
}
/*
* We now have a list of Src structures headed by 'bottom' and linked via
* their 'parent' pointers. What we do next is create links between
* source and target nodes (which may or may not have been created)
* and set the necessary local variables in each target. The
* commands for each target are set from the commands of the
* transformation rule used to get from the src suffix to the targ
* suffix. Note that this causes the commands list of the original
* node, gn, to be replaced by the commands of the final
* transformation rule. Also, the unmade field of gn is incremented.
* Etc.
*/
if (bottom->node == NILGNODE) {
bottom->node = Targ_FindNode(bottom->file, TARG_CREATE);
}
for (src = bottom; src->parent != (Src *)NULL; src = src->parent) {
targ = src->parent;
if (src->node->suffix)
src->node->suffix->refCount--;
src->node->suffix = src->suff;
src->node->suffix->refCount++;
if (targ->node == NILGNODE) {
targ->node = Targ_FindNode(targ->file, TARG_CREATE);
}
SuffApplyTransform(targ->node, src->node,
targ->suff, src->suff);
if (targ->node != gn) {
/*
* Finish off the dependency-search process for any nodes
* between bottom and gn (no point in questing around the
* filesystem for their implicit source when it's already
* known). Note that the node can't have any sources that
* need expanding, since SuffFindThem will stop on an existing
* node, so all we need to do is set the standard and System V
* variables.
*/
targ->node->type |= OP_DEPS_FOUND;
Var_Set(PREFIX, targ->pref, targ->node);
Var_Set(TARGET, targ->node->name, targ->node);
}
}
if (gn->suffix)
gn->suffix->refCount--;
gn->suffix = src->suff;
gn->suffix->refCount++;
/*
* So Dir_MTime doesn't go questing for it...
*/
efree(gn->path);
gn->path = estrdup(gn->name);
/*
* Nuke the transformation path and the Src structures left over in the
* two lists.
*/
sfnd_return:
if (bottom)
if (Lst_Member(slst, (ClientData) bottom) == NILLNODE)
Lst_AtEnd(slst, (ClientData) bottom);
while (SuffRemoveSrc(srcs) || SuffRemoveSrc(targs))
continue;
Lst_Concat(slst, srcs, LST_CONCLINK);
Lst_Concat(slst, targs, LST_CONCLINK);
}
/*-
*-----------------------------------------------------------------------
* Suff_FindDeps --
* Find implicit sources for the target described by the graph node
* gn
*
* Results:
* Nothing.
*
* Side Effects:
* Nodes are added to the graph below the passed-in node. The nodes
* are marked to have their IMPSRC variable filled in. The
* PREFIX variable is set for the given node and all its
* implied children.
*
* Notes:
* The path found by this target is the shortest path in the
* transformation graph, which may pass through non-existent targets,
* to an existing target. The search continues on all paths from the
* root suffix until a file is found. I.e. if there's a path
* .o -> .c -> .l -> .l,v from the root and the .l,v file exists but
* the .c and .l files don't, the search will branch out in
* all directions from .o and again from all the nodes on the
* next level until the .l,v node is encountered.
*
*-----------------------------------------------------------------------
*/
void
Suff_FindDeps(gn)
GNode *gn;
{
SuffFindDeps(gn, srclist);
while (SuffRemoveSrc(srclist))
continue;
}
static void
SuffFindDeps (gn, slst)
GNode *gn; /* node we're dealing with */
Lst slst;
{
if (gn->type & OP_DEPS_FOUND) {
/*
* If dependencies already found, no need to do it again...
*/
return;
} else {
gn->type |= OP_DEPS_FOUND;
}
if (DEBUG(SUFF)) {
printf ("SuffFindDeps (%s)\n", gn->name);
}
if (gn->type & OP_ARCHV) {
SuffFindArchiveDeps(gn, slst);
} else if (gn->type & OP_LIB) {
/*
* If the node is a library, it is the arch module's job to find it
* and set the TARGET variable accordingly. We merely provide the
* search path, assuming all libraries end in ".a" (if the suffix
* hasn't been defined, there's nothing we can do for it, so we just
* set the TARGET variable to the node's name in order to give it a
* value).
*/
LstNode ln;
Suff *s;
ln = Lst_Find (sufflist, (ClientData)LIBSUFF, SuffSuffHasNameP);
if (gn->suffix)
gn->suffix->refCount--;
if (ln != NILLNODE) {
gn->suffix = s = (Suff *) Lst_Datum (ln);
gn->suffix->refCount++;
Arch_FindLib (gn, s->searchPath);
} else {
gn->suffix = NULL;
Var_Set (TARGET, gn->name, gn);
}
/*
* Because a library (-lfoo) target doesn't follow the standard
* filesystem conventions, we don't set the regular variables for
* the thing. .PREFIX is simply made empty...
*/
Var_Set(PREFIX, "", gn);
} else {
SuffFindNormalDeps(gn, slst);
}
}
/*-
*-----------------------------------------------------------------------
* Suff_SetNull --
* Define which suffix is the null suffix.
*
* Results:
* None.
*
* Side Effects:
* 'suffNull' is altered.
*
* Notes:
* Need to handle the changing of the null suffix gracefully so the
* old transformation rules don't just go away.
*
*-----------------------------------------------------------------------
*/
void
Suff_SetNull(name)
char *name; /* Name of null suffix */
{
Suff *s;
LstNode ln;
ln = Lst_Find(sufflist, (ClientData)name, SuffSuffHasNameP);
if (ln != NILLNODE) {
s = (Suff *)Lst_Datum(ln);
if (suffNull != (Suff *)NULL) {
suffNull->flags &= ~SUFF_NULL;
}
s->flags |= SUFF_NULL;
/*
* XXX: Here's where the transformation mangling would take place
*/
suffNull = s;
} else {
Parse_Error (PARSE_WARNING, "Desired null suffix %s not defined.",
name);
}
}
/*-
*-----------------------------------------------------------------------
* Suff_Init --
* Initialize suffixes module
*
* Results:
* None
*
* Side Effects:
* Many
*-----------------------------------------------------------------------
*/
void
Suff_Init ()
{
sufflist = Lst_Init (FALSE);
suffClean = Lst_Init(FALSE);
srclist = Lst_Init (FALSE);
transforms = Lst_Init (FALSE);
sNum = 0;
/*
* Create null suffix for single-suffix rules (POSIX). The thing doesn't
* actually go on the suffix list or everyone will think that's its
* suffix.
*/
emptySuff = suffNull = (Suff *) emalloc (sizeof (Suff));
suffNull->name = estrdup ("");
suffNull->nameLen = 0;
suffNull->searchPath = Lst_Init (FALSE);
Dir_Concat(suffNull->searchPath, dirSearchPath);
suffNull->children = Lst_Init (FALSE);
suffNull->parents = Lst_Init (FALSE);
suffNull->ref = Lst_Init (FALSE);
suffNull->sNum = sNum++;
suffNull->flags = SUFF_NULL;
suffNull->refCount = 1;
}
/*-
*----------------------------------------------------------------------
* Suff_End --
* Cleanup the this module
*
* Results:
* None
*
* Side Effects:
* The memory is free'd.
*----------------------------------------------------------------------
*/
void
Suff_End()
{
Lst_Destroy(sufflist, SuffFree);
Lst_Destroy(suffClean, SuffFree);
if (suffNull)
SuffFree(suffNull);
Lst_Destroy(srclist, NOFREE);
Lst_Destroy(transforms, NOFREE);
}
/********************* DEBUGGING FUNCTIONS **********************/
static int SuffPrintName(s, dummy)
ClientData s;
ClientData dummy;
{
printf ("%s ", ((Suff *) s)->name);
return (dummy ? 0 : 0);
}
static int
SuffPrintSuff (sp, dummy)
ClientData sp;
ClientData dummy;
{
Suff *s = (Suff *) sp;
int flags;
int flag;
printf ("# `%s' [%d] ", s->name, s->refCount);
flags = s->flags;
if (flags) {
fputs (" (", stdout);
while (flags) {
flag = 1 << (ffs(flags) - 1);
flags &= ~flag;
switch (flag) {
case SUFF_NULL:
printf ("NULL");
break;
case SUFF_INCLUDE:
printf ("INCLUDE");
break;
case SUFF_LIBRARY:
printf ("LIBRARY");
break;
}
fputc(flags ? '|' : ')', stdout);
}
}
fputc ('\n', stdout);
printf ("#\tTo: ");
Lst_ForEach (s->parents, SuffPrintName, (ClientData)0);
fputc ('\n', stdout);
printf ("#\tFrom: ");
Lst_ForEach (s->children, SuffPrintName, (ClientData)0);
fputc ('\n', stdout);
printf ("#\tSearch Path: ");
Dir_PrintPath (s->searchPath);
fputc ('\n', stdout);
return (dummy ? 0 : 0);
}
static int
SuffPrintTrans (tp, dummy)
ClientData tp;
ClientData dummy;
{
GNode *t = (GNode *) tp;
printf ("%-16s: ", t->name);
Targ_PrintType (t->type);
fputc ('\n', stdout);
Lst_ForEach (t->commands, Targ_PrintCmd, (ClientData)0);
fputc ('\n', stdout);
return(dummy ? 0 : 0);
}
void
Suff_PrintAll()
{
printf ("#*** Suffixes:\n");
Lst_ForEach (sufflist, SuffPrintSuff, (ClientData)0);
printf ("#*** Transformations:\n");
Lst_ForEach (transforms, SuffPrintTrans, (ClientData)0);
}
|