summaryrefslogtreecommitdiffstats
path: root/Source/cmLocalUnixMakefileGenerator3.cxx
blob: 2d100212acb1faedb1356f9f83c4660bc04ee928 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
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
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing for details.  */
#include "cmLocalUnixMakefileGenerator3.h"

#include "cmsys/FStream.hxx"
#include "cmsys/Terminal.h"
#include <algorithm>
#include <functional>
#include <sstream>
#include <stdio.h>
#include <utility>

#include "cmAlgorithms.h"
#include "cmCustomCommand.h"
#include "cmCustomCommandGenerator.h"
#include "cmFileTimeComparison.h"
#include "cmGeneratedFileStream.h"
#include "cmGeneratorTarget.h"
#include "cmGlobalGenerator.h"
#include "cmGlobalUnixMakefileGenerator3.h"
#include "cmLocalGenerator.h"
#include "cmMakefile.h"
#include "cmMakefileTargetGenerator.h"
#include "cmOutputConverter.h"
#include "cmRulePlaceholderExpander.h"
#include "cmSourceFile.h"
#include "cmState.h"
#include "cmStateDirectory.h"
#include "cmStateSnapshot.h"
#include "cmStateTypes.h"
#include "cmSystemTools.h"
#include "cmVersion.h"
#include "cm_auto_ptr.hxx"
#include "cmake.h"

// Include dependency scanners for supported languages.  Only the
// C/C++ scanner is needed for bootstrapping CMake.
#include "cmDependsC.h"
#ifdef CMAKE_BUILD_WITH_CMAKE
#include "cmDependsFortran.h"
#include "cmDependsJava.h"
#endif

// Escape special characters in Makefile dependency lines
class cmMakeSafe
{
public:
  cmMakeSafe(const char* s)
    : Data(s)
  {
  }
  cmMakeSafe(std::string const& s)
    : Data(s.c_str())
  {
  }

private:
  const char* Data;
  friend std::ostream& operator<<(std::ostream& os, cmMakeSafe const& self)
  {
    for (const char* c = self.Data; *c; ++c) {
      switch (*c) {
        case '=':
          os << "$(EQUALS)";
          break;
        default:
          os << *c;
          break;
      }
    }
    return os;
  }
};

// Helper function used below.
static std::string cmSplitExtension(std::string const& in, std::string& base)
{
  std::string ext;
  std::string::size_type dot_pos = in.rfind('.');
  if (dot_pos != std::string::npos) {
    // Remove the extension first in case &base == &in.
    ext = in.substr(dot_pos);
    base = in.substr(0, dot_pos);
  } else {
    base = in;
  }
  return ext;
}

cmLocalUnixMakefileGenerator3::cmLocalUnixMakefileGenerator3(
  cmGlobalGenerator* gg, cmMakefile* mf)
  : cmLocalCommonGenerator(gg, mf, mf->GetCurrentBinaryDirectory())
{
  this->MakefileVariableSize = 0;
  this->ColorMakefile = false;
  this->SkipPreprocessedSourceRules = false;
  this->SkipAssemblySourceRules = false;
  this->MakeCommandEscapeTargetTwice = false;
  this->BorlandMakeCurlyHack = false;
}

cmLocalUnixMakefileGenerator3::~cmLocalUnixMakefileGenerator3()
{
}

void cmLocalUnixMakefileGenerator3::Generate()
{
  // Record whether some options are enabled to avoid checking many
  // times later.
  if (!this->GetGlobalGenerator()->GetCMakeInstance()->GetIsInTryCompile()) {
    this->ColorMakefile = this->Makefile->IsOn("CMAKE_COLOR_MAKEFILE");
  }
  this->SkipPreprocessedSourceRules =
    this->Makefile->IsOn("CMAKE_SKIP_PREPROCESSED_SOURCE_RULES");
  this->SkipAssemblySourceRules =
    this->Makefile->IsOn("CMAKE_SKIP_ASSEMBLY_SOURCE_RULES");

  // Generate the rule files for each target.
  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
  cmGlobalUnixMakefileGenerator3* gg =
    static_cast<cmGlobalUnixMakefileGenerator3*>(this->GlobalGenerator);
  for (std::vector<cmGeneratorTarget*>::const_iterator t = targets.begin();
       t != targets.end(); ++t) {
    if ((*t)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
      continue;
    }
    CM_AUTO_PTR<cmMakefileTargetGenerator> tg(
      cmMakefileTargetGenerator::New(*t));
    if (tg.get()) {
      tg->WriteRuleFiles();
      gg->RecordTargetProgress(tg.get());
    }
  }

  // write the local Makefile
  this->WriteLocalMakefile();

  // Write the cmake file with information for this directory.
  this->WriteDirectoryInformationFile();
}

void cmLocalUnixMakefileGenerator3::ComputeHomeRelativeOutputPath()
{
  // Compute the path to use when referencing the current output
  // directory from the top output directory.
  this->HomeRelativeOutputPath = this->MaybeConvertToRelativePath(
    this->GetBinaryDirectory(), this->GetCurrentBinaryDirectory());
  if (this->HomeRelativeOutputPath == ".") {
    this->HomeRelativeOutputPath = "";
  }
  if (!this->HomeRelativeOutputPath.empty()) {
    this->HomeRelativeOutputPath += "/";
  }
}

void cmLocalUnixMakefileGenerator3::ComputeObjectFilenames(
  std::map<cmSourceFile const*, std::string>& mapping,
  cmGeneratorTarget const* gt)
{
  // Determine if these object files should use a custom extension
  char const* custom_ext = gt->GetCustomObjectExtension();
  for (std::map<cmSourceFile const*, std::string>::iterator si =
         mapping.begin();
       si != mapping.end(); ++si) {
    cmSourceFile const* sf = si->first;
    bool keptSourceExtension;
    si->second = this->GetObjectFileNameWithoutTarget(
      *sf, gt->ObjectDirectory, &keptSourceExtension, custom_ext);
  }
}

void cmLocalUnixMakefileGenerator3::GetLocalObjectFiles(
  std::map<std::string, LocalObjectInfo>& localObjectFiles)
{
  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
  for (std::vector<cmGeneratorTarget*>::const_iterator ti = targets.begin();
       ti != targets.end(); ++ti) {
    cmGeneratorTarget* gt = *ti;
    if (gt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
      continue;
    }
    std::vector<cmSourceFile const*> objectSources;
    gt->GetObjectSources(
      objectSources, this->Makefile->GetSafeDefinition("CMAKE_BUILD_TYPE"));
    // Compute full path to object file directory for this target.
    std::string dir;
    dir += gt->LocalGenerator->GetCurrentBinaryDirectory();
    dir += "/";
    dir += this->GetTargetDirectory(gt);
    dir += "/";
    // Compute the name of each object file.
    for (std::vector<cmSourceFile const*>::iterator si = objectSources.begin();
         si != objectSources.end(); ++si) {
      cmSourceFile const* sf = *si;
      bool hasSourceExtension = true;
      std::string objectName =
        this->GetObjectFileNameWithoutTarget(*sf, dir, &hasSourceExtension);
      if (cmSystemTools::FileIsFullPath(objectName.c_str())) {
        objectName = cmSystemTools::GetFilenameName(objectName);
      }
      LocalObjectInfo& info = localObjectFiles[objectName];
      info.HasSourceExtension = hasSourceExtension;
      info.push_back(LocalObjectEntry(gt, sf->GetLanguage()));
    }
  }
}

void cmLocalUnixMakefileGenerator3::GetIndividualFileTargets(
  std::vector<std::string>& targets)
{
  std::map<std::string, LocalObjectInfo> localObjectFiles;
  this->GetLocalObjectFiles(localObjectFiles);
  for (std::map<std::string, LocalObjectInfo>::iterator lo =
         localObjectFiles.begin();
       lo != localObjectFiles.end(); ++lo) {
    targets.push_back(lo->first);

    std::string::size_type dot_pos = lo->first.rfind(".");
    std::string base = lo->first.substr(0, dot_pos);
    if (lo->second.HasPreprocessRule) {
      targets.push_back(base + ".i");
    }

    if (lo->second.HasAssembleRule) {
      targets.push_back(base + ".s");
    }
  }
}

void cmLocalUnixMakefileGenerator3::WriteLocalMakefile()
{
  // generate the includes
  std::string ruleFileName = "Makefile";

  // Open the rule file.  This should be copy-if-different because the
  // rules may depend on this file itself.
  std::string ruleFileNameFull = this->ConvertToFullPath(ruleFileName);
  cmGeneratedFileStream ruleFileStream(
    ruleFileNameFull.c_str(), false,
    this->GlobalGenerator->GetMakefileEncoding());
  if (!ruleFileStream) {
    return;
  }
  // always write the top makefile
  if (!this->IsRootMakefile()) {
    ruleFileStream.SetCopyIfDifferent(true);
  }

  // write the all rules
  this->WriteLocalAllRules(ruleFileStream);

  // only write local targets unless at the top Keep track of targets already
  // listed.
  std::set<std::string> emittedTargets;
  if (!this->IsRootMakefile()) {
    // write our targets, and while doing it collect up the object
    // file rules
    this->WriteLocalMakefileTargets(ruleFileStream, emittedTargets);
  } else {
    cmGlobalUnixMakefileGenerator3* gg =
      static_cast<cmGlobalUnixMakefileGenerator3*>(this->GlobalGenerator);
    gg->WriteConvenienceRules(ruleFileStream, emittedTargets);
  }

  bool do_preprocess_rules = this->GetCreatePreprocessedSourceRules();
  bool do_assembly_rules = this->GetCreateAssemblySourceRules();

  std::map<std::string, LocalObjectInfo> localObjectFiles;
  this->GetLocalObjectFiles(localObjectFiles);

  // now write out the object rules
  // for each object file name
  for (std::map<std::string, LocalObjectInfo>::iterator lo =
         localObjectFiles.begin();
       lo != localObjectFiles.end(); ++lo) {
    // Add a convenience rule for building the object file.
    this->WriteObjectConvenienceRule(ruleFileStream,
                                     "target to build an object file",
                                     lo->first.c_str(), lo->second);

    // Check whether preprocessing and assembly rules make sense.
    // They make sense only for C and C++ sources.
    bool lang_has_preprocessor = false;
    bool lang_has_assembly = false;

    for (std::vector<LocalObjectEntry>::const_iterator ei = lo->second.begin();
         ei != lo->second.end(); ++ei) {
      if (ei->Language == "C" || ei->Language == "CXX" ||
          ei->Language == "CUDA" || ei->Language == "Fortran") {
        // Right now, C, C++, Fortran and CUDA have both a preprocessor and the
        // ability to generate assembly code
        lang_has_preprocessor = true;
        lang_has_assembly = true;
        break;
      }
    }

    // Add convenience rules for preprocessed and assembly files.
    if (lang_has_preprocessor && do_preprocess_rules) {
      std::string::size_type dot_pos = lo->first.rfind(".");
      std::string base = lo->first.substr(0, dot_pos);
      this->WriteObjectConvenienceRule(ruleFileStream,
                                       "target to preprocess a source file",
                                       (base + ".i").c_str(), lo->second);
      lo->second.HasPreprocessRule = true;
    }

    if (lang_has_assembly && do_assembly_rules) {
      std::string::size_type dot_pos = lo->first.rfind(".");
      std::string base = lo->first.substr(0, dot_pos);
      this->WriteObjectConvenienceRule(
        ruleFileStream, "target to generate assembly for a file",
        (base + ".s").c_str(), lo->second);
      lo->second.HasAssembleRule = true;
    }
  }

  // add a help target as long as there isn;t a real target named help
  if (emittedTargets.insert("help").second) {
    cmGlobalUnixMakefileGenerator3* gg =
      static_cast<cmGlobalUnixMakefileGenerator3*>(this->GlobalGenerator);
    gg->WriteHelpRule(ruleFileStream, this);
  }

  this->WriteSpecialTargetsBottom(ruleFileStream);
}

void cmLocalUnixMakefileGenerator3::WriteObjectConvenienceRule(
  std::ostream& ruleFileStream, const char* comment, const char* output,
  LocalObjectInfo const& info)
{
  // If the rule includes the source file extension then create a
  // version that has the extension removed.  The help should include
  // only the version without source extension.
  bool inHelp = true;
  if (info.HasSourceExtension) {
    // Remove the last extension.  This should be kept.
    std::string outBase1 = output;
    std::string outExt1 = cmSplitExtension(outBase1, outBase1);

    // Now remove the source extension and put back the last
    // extension.
    std::string outNoExt;
    cmSplitExtension(outBase1, outNoExt);
    outNoExt += outExt1;

    // Add a rule to drive the rule below.
    std::vector<std::string> depends;
    depends.push_back(output);
    std::vector<std::string> no_commands;
    this->WriteMakeRule(ruleFileStream, CM_NULLPTR, outNoExt, depends,
                        no_commands, true, true);
    inHelp = false;
  }

  // Recursively make the rule for each target using the object file.
  std::vector<std::string> commands;
  for (std::vector<LocalObjectEntry>::const_iterator t = info.begin();
       t != info.end(); ++t) {
    std::string tgtMakefileName = this->GetRelativeTargetDirectory(t->Target);
    std::string targetName = tgtMakefileName;
    tgtMakefileName += "/build.make";
    targetName += "/";
    targetName += output;
    commands.push_back(
      this->GetRecursiveMakeCall(tgtMakefileName.c_str(), targetName));
  }
  this->CreateCDCommand(commands, this->GetBinaryDirectory(),
                        this->GetCurrentBinaryDirectory());

  // Write the rule to the makefile.
  std::vector<std::string> no_depends;
  this->WriteMakeRule(ruleFileStream, comment, output, no_depends, commands,
                      true, inHelp);
}

void cmLocalUnixMakefileGenerator3::WriteLocalMakefileTargets(
  std::ostream& ruleFileStream, std::set<std::string>& emitted)
{
  std::vector<std::string> depends;
  std::vector<std::string> commands;

  // for each target we just provide a rule to cd up to the top and do a make
  // on the target
  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
  std::string localName;
  for (std::vector<cmGeneratorTarget*>::const_iterator t = targets.begin();
       t != targets.end(); ++t) {
    if (((*t)->GetType() == cmStateEnums::EXECUTABLE) ||
        ((*t)->GetType() == cmStateEnums::STATIC_LIBRARY) ||
        ((*t)->GetType() == cmStateEnums::SHARED_LIBRARY) ||
        ((*t)->GetType() == cmStateEnums::MODULE_LIBRARY) ||
        ((*t)->GetType() == cmStateEnums::OBJECT_LIBRARY) ||
        ((*t)->GetType() == cmStateEnums::UTILITY)) {
      emitted.insert((*t)->GetName());

      // for subdirs add a rule to build this specific target by name.
      localName = this->GetRelativeTargetDirectory(*t);
      localName += "/rule";
      commands.clear();
      depends.clear();

      // Build the target for this pass.
      std::string makefile2 = cmake::GetCMakeFilesDirectoryPostSlash();
      makefile2 += "Makefile2";
      commands.push_back(
        this->GetRecursiveMakeCall(makefile2.c_str(), localName));
      this->CreateCDCommand(commands, this->GetBinaryDirectory(),
                            this->GetCurrentBinaryDirectory());
      this->WriteMakeRule(ruleFileStream, "Convenience name for target.",
                          localName, depends, commands, true);

      // Add a target with the canonical name (no prefix, suffix or path).
      if (localName != (*t)->GetName()) {
        commands.clear();
        depends.push_back(localName);
        this->WriteMakeRule(ruleFileStream, "Convenience name for target.",
                            (*t)->GetName(), depends, commands, true);
      }

      // Add a fast rule to build the target
      std::string makefileName = this->GetRelativeTargetDirectory(*t);
      makefileName += "/build.make";
      // make sure the makefile name is suitable for a makefile
      std::string makeTargetName = this->GetRelativeTargetDirectory(*t);
      makeTargetName += "/build";
      localName = (*t)->GetName();
      localName += "/fast";
      depends.clear();
      commands.clear();
      commands.push_back(
        this->GetRecursiveMakeCall(makefileName.c_str(), makeTargetName));
      this->CreateCDCommand(commands, this->GetBinaryDirectory(),
                            this->GetCurrentBinaryDirectory());
      this->WriteMakeRule(ruleFileStream, "fast build rule for target.",
                          localName, depends, commands, true);

      // Add a local name for the rule to relink the target before
      // installation.
      if ((*t)->NeedRelinkBeforeInstall(this->ConfigName)) {
        makeTargetName = this->GetRelativeTargetDirectory(*t);
        makeTargetName += "/preinstall";
        localName = (*t)->GetName();
        localName += "/preinstall";
        depends.clear();
        commands.clear();
        commands.push_back(
          this->GetRecursiveMakeCall(makefile2.c_str(), makeTargetName));
        this->CreateCDCommand(commands, this->GetBinaryDirectory(),
                              this->GetCurrentBinaryDirectory());
        this->WriteMakeRule(ruleFileStream,
                            "Manual pre-install relink rule for target.",
                            localName, depends, commands, true);
      }
    }
  }
}

void cmLocalUnixMakefileGenerator3::WriteDirectoryInformationFile()
{
  std::string infoFileName = this->GetCurrentBinaryDirectory();
  infoFileName += cmake::GetCMakeFilesDirectory();
  infoFileName += "/CMakeDirectoryInformation.cmake";

  // Open the output file.
  cmGeneratedFileStream infoFileStream(infoFileName.c_str());
  if (!infoFileStream) {
    return;
  }

  infoFileStream.SetCopyIfDifferent(true);
  // Write the do not edit header.
  this->WriteDisclaimer(infoFileStream);

  // Setup relative path conversion tops.
  /* clang-format off */
  infoFileStream
    << "# Relative path conversion top directories.\n"
    << "set(CMAKE_RELATIVE_PATH_TOP_SOURCE \""
    << this->StateSnapshot.GetDirectory().GetRelativePathTopSource()
    << "\")\n"
    << "set(CMAKE_RELATIVE_PATH_TOP_BINARY \""
    << this->StateSnapshot.GetDirectory().GetRelativePathTopBinary()
    << "\")\n"
    << "\n";
  /* clang-format on */

  // Tell the dependency scanner to use unix paths if necessary.
  if (cmSystemTools::GetForceUnixPaths()) {
    /* clang-format off */
    infoFileStream
      << "# Force unix paths in dependencies.\n"
      << "set(CMAKE_FORCE_UNIX_PATHS 1)\n"
      << "\n";
    /* clang-format on */
  }

  // Store the include regular expressions for this directory.
  infoFileStream << "\n"
                 << "# The C and CXX include file regular expressions for "
                 << "this directory.\n";
  infoFileStream << "set(CMAKE_C_INCLUDE_REGEX_SCAN ";
  this->WriteCMakeArgument(infoFileStream,
                           this->Makefile->GetIncludeRegularExpression());
  infoFileStream << ")\n";
  infoFileStream << "set(CMAKE_C_INCLUDE_REGEX_COMPLAIN ";
  this->WriteCMakeArgument(infoFileStream,
                           this->Makefile->GetComplainRegularExpression());
  infoFileStream << ")\n";
  infoFileStream
    << "set(CMAKE_CXX_INCLUDE_REGEX_SCAN ${CMAKE_C_INCLUDE_REGEX_SCAN})\n";
  infoFileStream << "set(CMAKE_CXX_INCLUDE_REGEX_COMPLAIN "
                    "${CMAKE_C_INCLUDE_REGEX_COMPLAIN})\n";
}

std::string cmLocalUnixMakefileGenerator3::ConvertToFullPath(
  const std::string& localPath)
{
  std::string dir = this->GetCurrentBinaryDirectory();
  dir += "/";
  dir += localPath;
  return dir;
}

const std::string& cmLocalUnixMakefileGenerator3::GetHomeRelativeOutputPath()
{
  return this->HomeRelativeOutputPath;
}

void cmLocalUnixMakefileGenerator3::WriteMakeRule(
  std::ostream& os, const char* comment, const std::string& target,
  const std::vector<std::string>& depends,
  const std::vector<std::string>& commands, bool symbolic, bool in_help)
{
  // Make sure there is a target.
  if (target.empty()) {
    cmSystemTools::Error("No target for WriteMakeRule! called with comment: ",
                         comment);
    return;
  }

  std::string replace;

  // Write the comment describing the rule in the makefile.
  if (comment) {
    replace = comment;
    std::string::size_type lpos = 0;
    std::string::size_type rpos;
    while ((rpos = replace.find('\n', lpos)) != std::string::npos) {
      os << "# " << replace.substr(lpos, rpos - lpos) << "\n";
      lpos = rpos + 1;
    }
    os << "# " << replace.substr(lpos) << "\n";
  }

  // Construct the left hand side of the rule.
  std::string tgt = cmSystemTools::ConvertToOutputPath(
    this->MaybeConvertToRelativePath(this->GetBinaryDirectory(), target)
      .c_str());

  const char* space = "";
  if (tgt.size() == 1) {
    // Add a space before the ":" to avoid drive letter confusion on
    // Windows.
    space = " ";
  }

  // Mark the rule as symbolic if requested.
  if (symbolic) {
    if (const char* sym =
          this->Makefile->GetDefinition("CMAKE_MAKE_SYMBOLIC_RULE")) {
      os << cmMakeSafe(tgt) << space << ": " << sym << "\n";
    }
  }

  // Write the rule.
  if (depends.empty()) {
    // No dependencies.  The commands will always run.
    os << cmMakeSafe(tgt) << space << ":\n";
  } else {
    // Split dependencies into multiple rule lines.  This allows for
    // very long dependency lists even on older make implementations.
    std::string binDir = this->GetBinaryDirectory();
    for (std::vector<std::string>::const_iterator dep = depends.begin();
         dep != depends.end(); ++dep) {
      replace = *dep;
      replace = cmSystemTools::ConvertToOutputPath(
        this->MaybeConvertToRelativePath(binDir, replace).c_str());
      os << cmMakeSafe(tgt) << space << ": " << cmMakeSafe(replace) << "\n";
    }
  }

  // Write the list of commands.
  os << cmWrap("\t", commands, "", "\n") << "\n";
  if (symbolic && !this->IsWatcomWMake()) {
    os << ".PHONY : " << cmMakeSafe(tgt) << "\n";
  }
  os << "\n";
  // Add the output to the local help if requested.
  if (in_help) {
    this->LocalHelp.push_back(target);
  }
}

std::string cmLocalUnixMakefileGenerator3::MaybeConvertWatcomShellCommand(
  std::string const& cmd)
{
  if (this->IsWatcomWMake() && cmSystemTools::FileIsFullPath(cmd.c_str()) &&
      cmd.find_first_of("( )") != std::string::npos) {
    // On Watcom WMake use the windows short path for the command
    // name.  This is needed to avoid funny quoting problems on
    // lines with shell redirection operators.
    std::string scmd;
    if (cmSystemTools::GetShortPath(cmd, scmd)) {
      return this->ConvertToOutputFormat(scmd, cmOutputConverter::SHELL);
    }
  }
  return std::string();
}

void cmLocalUnixMakefileGenerator3::WriteMakeVariables(
  std::ostream& makefileStream)
{
  this->WriteDivider(makefileStream);
  makefileStream << "# Set environment variables for the build.\n"
                 << "\n";
  cmGlobalUnixMakefileGenerator3* gg =
    static_cast<cmGlobalUnixMakefileGenerator3*>(this->GlobalGenerator);
  if (gg->DefineWindowsNULL) {
    makefileStream << "!IF \"$(OS)\" == \"Windows_NT\"\n"
                   << "NULL=\n"
                   << "!ELSE\n"
                   << "NULL=nul\n"
                   << "!ENDIF\n";
  }
  if (this->IsWindowsShell()) {
    makefileStream << "SHELL = cmd.exe\n"
                   << "\n";
  } else {
#if !defined(__VMS)
    /* clang-format off */
      makefileStream
        << "# The shell in which to execute make rules.\n"
        << "SHELL = /bin/sh\n"
        << "\n";
/* clang-format on */
#endif
  }

  std::string cmakeShellCommand =
    this->MaybeConvertWatcomShellCommand(cmSystemTools::GetCMakeCommand());
  if (cmakeShellCommand.empty()) {
    cmakeShellCommand = this->ConvertToOutputFormat(
      cmSystemTools::CollapseFullPath(cmSystemTools::GetCMakeCommand()),
      cmOutputConverter::SHELL);
  }

  /* clang-format off */
  makefileStream
    << "# The CMake executable.\n"
    << "CMAKE_COMMAND = "
    << cmakeShellCommand
    << "\n"
    << "\n";
  makefileStream
    << "# The command to remove a file.\n"
    << "RM = "
    << cmakeShellCommand
    << " -E remove -f\n"
    << "\n";
  makefileStream
    << "# Escaping for special characters.\n"
    << "EQUALS = =\n"
    << "\n";
  makefileStream
    << "# The top-level source directory on which CMake was run.\n"
    << "CMAKE_SOURCE_DIR = "
    << this->ConvertToOutputFormat(
      cmSystemTools::CollapseFullPath(this->GetSourceDirectory()),
                     cmOutputConverter::SHELL)
    << "\n"
    << "\n";
  makefileStream
    << "# The top-level build directory on which CMake was run.\n"
    << "CMAKE_BINARY_DIR = "
    << this->ConvertToOutputFormat(
      cmSystemTools::CollapseFullPath(this->GetBinaryDirectory()),
                     cmOutputConverter::SHELL)
    << "\n"
    << "\n";
  /* clang-format on */
}

void cmLocalUnixMakefileGenerator3::WriteSpecialTargetsTop(
  std::ostream& makefileStream)
{
  this->WriteDivider(makefileStream);
  makefileStream << "# Special targets provided by cmake.\n"
                 << "\n";

  std::vector<std::string> no_commands;
  std::vector<std::string> no_depends;

  // Special target to cleanup operation of make tool.
  // This should be the first target except for the default_target in
  // the interface Makefile.
  this->WriteMakeRule(makefileStream,
                      "Disable implicit rules so canonical targets will work.",
                      ".SUFFIXES", no_depends, no_commands, false);

  if (!this->IsNMake() && !this->IsWatcomWMake() &&
      !this->BorlandMakeCurlyHack) {
    // turn off RCS and SCCS automatic stuff from gmake
    makefileStream
      << "# Remove some rules from gmake that .SUFFIXES does not remove.\n"
      << "SUFFIXES =\n\n";
  }
  // Add a fake suffix to keep HP happy.  Must be max 32 chars for SGI make.
  std::vector<std::string> depends;
  depends.push_back(".hpux_make_needs_suffix_list");
  this->WriteMakeRule(makefileStream, CM_NULLPTR, ".SUFFIXES", depends,
                      no_commands, false);
  if (this->IsWatcomWMake()) {
    // Switch on WMake feature, if an error or interrupt occurs during
    // makefile processing, the current target being made may be deleted
    // without prompting (the same as command line -e option).
    /* clang-format off */
    makefileStream <<
      "\n"
      ".ERASE\n"
      "\n"
      ;
    /* clang-format on */
  }
  if (this->Makefile->IsOn("CMAKE_VERBOSE_MAKEFILE")) {
    /* clang-format off */
    makefileStream
      << "# Produce verbose output by default.\n"
      << "VERBOSE = 1\n"
      << "\n";
    /* clang-format on */
  }
  if (this->IsWatcomWMake()) {
    /* clang-format off */
    makefileStream <<
      "!ifndef VERBOSE\n"
      ".SILENT\n"
      "!endif\n"
      "\n"
      ;
    /* clang-format on */
  } else {
    // Write special target to silence make output.  This must be after
    // the default target in case VERBOSE is set (which changes the
    // name).  The setting of CMAKE_VERBOSE_MAKEFILE to ON will cause a
    // "VERBOSE=1" to be added as a make variable which will change the
    // name of this special target.  This gives a make-time choice to
    // the user.
    this->WriteMakeRule(makefileStream,
                        "Suppress display of executed commands.",
                        "$(VERBOSE).SILENT", no_depends, no_commands, false);
  }

  // Work-around for makes that drop rules that have no dependencies
  // or commands.
  cmGlobalUnixMakefileGenerator3* gg =
    static_cast<cmGlobalUnixMakefileGenerator3*>(this->GlobalGenerator);
  std::string hack = gg->GetEmptyRuleHackDepends();
  if (!hack.empty()) {
    no_depends.push_back(hack);
  }
  std::string hack_cmd = gg->GetEmptyRuleHackCommand();
  if (!hack_cmd.empty()) {
    no_commands.push_back(hack_cmd);
  }

  // Special symbolic target that never exists to force dependers to
  // run their rules.
  this->WriteMakeRule(makefileStream, "A target that is always out of date.",
                      "cmake_force", no_depends, no_commands, true);

  // Variables for reference by other rules.
  this->WriteMakeVariables(makefileStream);
}

void cmLocalUnixMakefileGenerator3::WriteSpecialTargetsBottom(
  std::ostream& makefileStream)
{
  this->WriteDivider(makefileStream);
  makefileStream << "# Special targets to cleanup operation of make.\n"
                 << "\n";

  // Write special "cmake_check_build_system" target to run cmake with
  // the --check-build-system flag.
  {
    // Build command to run CMake to check if anything needs regenerating.
    std::string cmakefileName = cmake::GetCMakeFilesDirectoryPostSlash();
    cmakefileName += "Makefile.cmake";
    std::string runRule =
      "$(CMAKE_COMMAND) -H$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR)";
    runRule += " --check-build-system ";
    runRule +=
      this->ConvertToOutputFormat(cmakefileName, cmOutputConverter::SHELL);
    runRule += " 0";

    std::vector<std::string> no_depends;
    std::vector<std::string> commands;
    commands.push_back(runRule);
    if (!this->IsRootMakefile()) {
      this->CreateCDCommand(commands, this->GetBinaryDirectory(),
                            this->GetCurrentBinaryDirectory());
    }
    this->WriteMakeRule(
      makefileStream, "Special rule to run CMake to check the build system "
                      "integrity.\n"
                      "No rule that depends on this can have "
                      "commands that come from listfiles\n"
                      "because they might be regenerated.",
      "cmake_check_build_system", no_depends, commands, true);
  }
}

void cmLocalUnixMakefileGenerator3::WriteConvenienceRule(
  std::ostream& ruleFileStream, const std::string& realTarget,
  const std::string& helpTarget)
{
  // A rule is only needed if the names are different.
  if (realTarget != helpTarget) {
    // The helper target depends on the real target.
    std::vector<std::string> depends;
    depends.push_back(realTarget);

    // There are no commands.
    std::vector<std::string> no_commands;

    // Write the rule.
    this->WriteMakeRule(ruleFileStream, "Convenience name for target.",
                        helpTarget, depends, no_commands, true);
  }
}

std::string cmLocalUnixMakefileGenerator3::GetRelativeTargetDirectory(
  cmGeneratorTarget* target)
{
  std::string dir = this->HomeRelativeOutputPath;
  dir += this->GetTargetDirectory(target);
  return dir;
}

void cmLocalUnixMakefileGenerator3::AppendFlags(std::string& flags,
                                                const std::string& newFlags)
{
  if (this->IsWatcomWMake() && !newFlags.empty()) {
    std::string newf = newFlags;
    if (newf.find("\\\"") != std::string::npos) {
      cmSystemTools::ReplaceString(newf, "\\\"", "\"");
      this->cmLocalGenerator::AppendFlags(flags, newf);
      return;
    }
  }
  this->cmLocalGenerator::AppendFlags(flags, newFlags);
}

void cmLocalUnixMakefileGenerator3::AppendFlags(std::string& flags,
                                                const char* newFlags)
{
  this->cmLocalGenerator::AppendFlags(flags, newFlags);
}

void cmLocalUnixMakefileGenerator3::AppendRuleDepend(
  std::vector<std::string>& depends, const char* ruleFileName)
{
  // Add a dependency on the rule file itself unless an option to skip
  // it is specifically enabled by the user or project.
  const char* nodep =
    this->Makefile->GetDefinition("CMAKE_SKIP_RULE_DEPENDENCY");
  if (!nodep || cmSystemTools::IsOff(nodep)) {
    depends.push_back(ruleFileName);
  }
}

void cmLocalUnixMakefileGenerator3::AppendRuleDepends(
  std::vector<std::string>& depends, std::vector<std::string> const& ruleFiles)
{
  // Add a dependency on the rule file itself unless an option to skip
  // it is specifically enabled by the user or project.
  if (!this->Makefile->IsOn("CMAKE_SKIP_RULE_DEPENDENCY")) {
    depends.insert(depends.end(), ruleFiles.begin(), ruleFiles.end());
  }
}

void cmLocalUnixMakefileGenerator3::AppendCustomDepends(
  std::vector<std::string>& depends, const std::vector<cmCustomCommand>& ccs)
{
  for (std::vector<cmCustomCommand>::const_iterator i = ccs.begin();
       i != ccs.end(); ++i) {
    cmCustomCommandGenerator ccg(*i, this->ConfigName, this);
    this->AppendCustomDepend(depends, ccg);
  }
}

void cmLocalUnixMakefileGenerator3::AppendCustomDepend(
  std::vector<std::string>& depends, cmCustomCommandGenerator const& ccg)
{
  for (std::vector<std::string>::const_iterator d = ccg.GetDepends().begin();
       d != ccg.GetDepends().end(); ++d) {
    // Lookup the real name of the dependency in case it is a CMake target.
    std::string dep;
    if (this->GetRealDependency(*d, this->ConfigName, dep)) {
      depends.push_back(dep);
    }
  }
}

void cmLocalUnixMakefileGenerator3::AppendCustomCommands(
  std::vector<std::string>& commands, const std::vector<cmCustomCommand>& ccs,
  cmGeneratorTarget* target, std::string const& relative)
{
  for (std::vector<cmCustomCommand>::const_iterator i = ccs.begin();
       i != ccs.end(); ++i) {
    cmCustomCommandGenerator ccg(*i, this->ConfigName, this);
    this->AppendCustomCommand(commands, ccg, target, relative, true);
  }
}

void cmLocalUnixMakefileGenerator3::AppendCustomCommand(
  std::vector<std::string>& commands, cmCustomCommandGenerator const& ccg,
  cmGeneratorTarget* target, std::string const& relative, bool echo_comment,
  std::ostream* content)
{
  // Optionally create a command to display the custom command's
  // comment text.  This is used for pre-build, pre-link, and
  // post-build command comments.  Custom build step commands have
  // their comments generated elsewhere.
  if (echo_comment) {
    const char* comment = ccg.GetComment();
    if (comment && *comment) {
      this->AppendEcho(commands, comment,
                       cmLocalUnixMakefileGenerator3::EchoGenerate);
    }
  }

  // if the command specified a working directory use it.
  std::string dir = this->GetCurrentBinaryDirectory();
  std::string workingDir = ccg.GetWorkingDirectory();
  if (!workingDir.empty()) {
    dir = workingDir;
  }
  if (content) {
    *content << dir;
  }

  CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
    this->CreateRulePlaceholderExpander());

  // Add each command line to the set of commands.
  std::vector<std::string> commands1;
  std::string currentBinDir = this->GetCurrentBinaryDirectory();
  for (unsigned int c = 0; c < ccg.GetNumberOfCommands(); ++c) {
    // Build the command line in a single string.
    std::string cmd = ccg.GetCommand(c);
    if (!cmd.empty()) {
      // Use "call " before any invocations of .bat or .cmd files
      // invoked as custom commands in the WindowsShell.
      //
      bool useCall = false;

      if (this->IsWindowsShell()) {
        std::string suffix;
        if (cmd.size() > 4) {
          suffix = cmSystemTools::LowerCase(cmd.substr(cmd.size() - 4));
          if (suffix == ".bat" || suffix == ".cmd") {
            useCall = true;
          }
        }
      }

      cmSystemTools::ReplaceString(cmd, "/./", "/");
      // Convert the command to a relative path only if the current
      // working directory will be the start-output directory.
      bool had_slash = cmd.find('/') != std::string::npos;
      if (workingDir.empty()) {
        cmd = this->MaybeConvertToRelativePath(currentBinDir, cmd);
      }
      bool has_slash = cmd.find('/') != std::string::npos;
      if (had_slash && !has_slash) {
        // This command was specified as a path to a file in the
        // current directory.  Add a leading "./" so it can run
        // without the current directory being in the search path.
        cmd = "./" + cmd;
      }

      std::string launcher;
      // Short-circuit if there is no launcher.
      const char* val = this->GetRuleLauncher(target, "RULE_LAUNCH_CUSTOM");
      if (val && *val) {
        // Expand rules in the empty string.  It may insert the launcher and
        // perform replacements.
        cmRulePlaceholderExpander::RuleVariables vars;
        vars.CMTargetName = target->GetName().c_str();
        vars.CMTargetType = cmState::GetTargetTypeName(target->GetType());
        std::string output;
        const std::vector<std::string>& outputs = ccg.GetOutputs();
        if (!outputs.empty()) {
          output = outputs[0];
          if (workingDir.empty()) {
            output = this->MaybeConvertToRelativePath(
              this->GetCurrentBinaryDirectory(), output);
          }
          output =
            this->ConvertToOutputFormat(output, cmOutputConverter::SHELL);
        }
        vars.Output = output.c_str();

        launcher = val;
        launcher += " ";
        rulePlaceholderExpander->ExpandRuleVariables(this, launcher, vars);
        if (!launcher.empty()) {
          launcher += " ";
        }
      }

      std::string shellCommand = this->MaybeConvertWatcomShellCommand(cmd);
      if (shellCommand.empty()) {
        shellCommand =
          this->ConvertToOutputFormat(cmd, cmOutputConverter::SHELL);
      }
      cmd = launcher + shellCommand;

      ccg.AppendArguments(c, cmd);
      if (content) {
        // Rule content does not include the launcher.
        *content << (cmd.c_str() + launcher.size());
      }
      if (this->BorlandMakeCurlyHack) {
        // Borland Make has a very strange bug.  If the first curly
        // brace anywhere in the command string is a left curly, it
        // must be written {{} instead of just {.  Otherwise some
        // curly braces are removed.  The hack can be skipped if the
        // first curly brace is the last character.
        std::string::size_type lcurly = cmd.find('{');
        if (lcurly != std::string::npos && lcurly < (cmd.size() - 1)) {
          std::string::size_type rcurly = cmd.find('}');
          if (rcurly == std::string::npos || rcurly > lcurly) {
            // The first curly is a left curly.  Use the hack.
            std::string hack_cmd = cmd.substr(0, lcurly);
            hack_cmd += "{{}";
            hack_cmd += cmd.substr(lcurly + 1);
            cmd = hack_cmd;
          }
        }
      }
      if (launcher.empty()) {
        if (useCall) {
          cmd = "call " + cmd;
        } else if (this->IsNMake() && cmd[0] == '"') {
          cmd = "echo >nul && " + cmd;
        }
      }
      commands1.push_back(cmd);
    }
  }

  // Setup the proper working directory for the commands.
  this->CreateCDCommand(commands1, dir.c_str(), relative);

  // push back the custom commands
  commands.insert(commands.end(), commands1.begin(), commands1.end());
}

void cmLocalUnixMakefileGenerator3::AppendCleanCommand(
  std::vector<std::string>& commands, const std::vector<std::string>& files,
  cmGeneratorTarget* target, const char* filename)
{
  std::string currentBinDir = this->GetCurrentBinaryDirectory();
  std::string cleanfile = currentBinDir;
  cleanfile += "/";
  cleanfile += this->GetTargetDirectory(target);
  cleanfile += "/cmake_clean";
  if (filename) {
    cleanfile += "_";
    cleanfile += filename;
  }
  cleanfile += ".cmake";
  std::string cleanfilePath = cmSystemTools::CollapseFullPath(cleanfile);
  cmsys::ofstream fout(cleanfilePath.c_str());
  if (!fout) {
    cmSystemTools::Error("Could not create ", cleanfilePath.c_str());
  }
  if (!files.empty()) {
    fout << "file(REMOVE_RECURSE\n";
    for (std::vector<std::string>::const_iterator f = files.begin();
         f != files.end(); ++f) {
      std::string fc = this->MaybeConvertToRelativePath(currentBinDir, *f);
      fout << "  " << cmOutputConverter::EscapeForCMake(fc) << "\n";
    }
    fout << ")\n";
  }
  std::string remove = "$(CMAKE_COMMAND) -P ";
  remove += this->ConvertToOutputFormat(
    this->MaybeConvertToRelativePath(this->GetCurrentBinaryDirectory(),
                                     cleanfile),
    cmOutputConverter::SHELL);
  commands.push_back(remove);

  // For the main clean rule add per-language cleaning.
  if (!filename) {
    // Get the set of source languages in the target.
    std::set<std::string> languages;
    target->GetLanguages(
      languages, this->Makefile->GetSafeDefinition("CMAKE_BUILD_TYPE"));
    /* clang-format off */
    fout << "\n"
         << "# Per-language clean rules from dependency scanning.\n"
         << "foreach(lang " << cmJoin(languages, " ") << ")\n"
         << "  include(" << this->GetTargetDirectory(target)
         << "/cmake_clean_${lang}.cmake OPTIONAL)\n"
         << "endforeach()\n";
    /* clang-format on */
  }
}

void cmLocalUnixMakefileGenerator3::AppendEcho(
  std::vector<std::string>& commands, std::string const& text, EchoColor color,
  EchoProgress const* progress)
{
  // Choose the color for the text.
  std::string color_name;
  if (this->GlobalGenerator->GetToolSupportsColor() && this->ColorMakefile) {
    // See cmake::ExecuteEchoColor in cmake.cxx for these options.
    // This color set is readable on both black and white backgrounds.
    switch (color) {
      case EchoNormal:
        break;
      case EchoDepend:
        color_name = "--magenta --bold ";
        break;
      case EchoBuild:
        color_name = "--green ";
        break;
      case EchoLink:
        color_name = "--green --bold ";
        break;
      case EchoGenerate:
        color_name = "--blue --bold ";
        break;
      case EchoGlobal:
        color_name = "--cyan ";
        break;
    }
  }

  // Echo one line at a time.
  std::string line;
  line.reserve(200);
  for (const char* c = text.c_str();; ++c) {
    if (*c == '\n' || *c == '\0') {
      // Avoid writing a blank last line on end-of-string.
      if (*c != '\0' || !line.empty()) {
        // Add a command to echo this line.
        std::string cmd;
        if (color_name.empty() && !progress) {
          // Use the native echo command.
          cmd = "@echo ";
          cmd += this->EscapeForShell(line, false, true);
        } else {
          // Use cmake to echo the text in color.
          cmd = "@$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) ";
          cmd += color_name;
          if (progress) {
            cmd += "--progress-dir=";
            cmd += this->ConvertToOutputFormat(
              cmSystemTools::CollapseFullPath(progress->Dir),
              cmOutputConverter::SHELL);
            cmd += " ";
            cmd += "--progress-num=";
            cmd += progress->Arg;
            cmd += " ";
          }
          cmd += this->EscapeForShell(line);
        }
        commands.push_back(cmd);
      }

      // Reset the line to emtpy.
      line = "";

      // Progress appears only on first line.
      progress = CM_NULLPTR;

      // Terminate on end-of-string.
      if (*c == '\0') {
        return;
      }
    } else if (*c != '\r') {
      // Append this character to the current line.
      line += *c;
    }
  }
}

std::string cmLocalUnixMakefileGenerator3::CreateMakeVariable(
  std::string const& s, std::string const& s2)
{
  std::string unmodified = s;
  unmodified += s2;
  // if there is no restriction on the length of make variables
  // and there are no "." characters in the string, then return the
  // unmodified combination.
  if ((!this->MakefileVariableSize &&
       unmodified.find('.') == std::string::npos) &&
      (!this->MakefileVariableSize &&
       unmodified.find('+') == std::string::npos) &&
      (!this->MakefileVariableSize &&
       unmodified.find('-') == std::string::npos)) {
    return unmodified;
  }

  // see if the variable has been defined before and return
  // the modified version of the variable
  std::map<std::string, std::string>::iterator i =
    this->MakeVariableMap.find(unmodified);
  if (i != this->MakeVariableMap.end()) {
    return i->second;
  }
  // start with the unmodified variable
  std::string ret = unmodified;
  // if this there is no value for this->MakefileVariableSize then
  // the string must have bad characters in it
  if (!this->MakefileVariableSize) {
    std::replace(ret.begin(), ret.end(), '.', '_');
    cmSystemTools::ReplaceString(ret, "-", "__");
    cmSystemTools::ReplaceString(ret, "+", "___");
    int ni = 0;
    char buffer[5];
    // make sure the _ version is not already used, if
    // it is used then add number to the end of the variable
    while (this->ShortMakeVariableMap.count(ret) && ni < 1000) {
      ++ni;
      sprintf(buffer, "%04d", ni);
      ret = unmodified + buffer;
    }
    this->ShortMakeVariableMap[ret] = "1";
    this->MakeVariableMap[unmodified] = ret;
    return ret;
  }

  // if the string is greater than 32 chars it is an invalid variable name
  // for borland make
  if (static_cast<int>(ret.size()) > this->MakefileVariableSize) {
    int keep = this->MakefileVariableSize - 8;
    int size = keep + 3;
    std::string str1 = s;
    std::string str2 = s2;
    // we must shorten the combined string by 4 characters
    // keep no more than 24 characters from the second string
    if (static_cast<int>(str2.size()) > keep) {
      str2 = str2.substr(0, keep);
    }
    if (static_cast<int>(str1.size()) + static_cast<int>(str2.size()) > size) {
      str1 = str1.substr(0, size - str2.size());
    }
    char buffer[5];
    int ni = 0;
    sprintf(buffer, "%04d", ni);
    ret = str1 + str2 + buffer;
    while (this->ShortMakeVariableMap.count(ret) && ni < 1000) {
      ++ni;
      sprintf(buffer, "%04d", ni);
      ret = str1 + str2 + buffer;
    }
    if (ni == 1000) {
      cmSystemTools::Error("Borland makefile variable length too long");
      return unmodified;
    }
    // once an unused variable is found
    this->ShortMakeVariableMap[ret] = "1";
  }
  // always make an entry into the unmodified to variable map
  this->MakeVariableMap[unmodified] = ret;
  return ret;
}

bool cmLocalUnixMakefileGenerator3::UpdateDependencies(const char* tgtInfo,
                                                       bool verbose,
                                                       bool color)
{
  // read in the target info file
  if (!this->Makefile->ReadListFile(tgtInfo) ||
      cmSystemTools::GetErrorOccuredFlag()) {
    cmSystemTools::Error("Target DependInfo.cmake file not found");
  }

  // Check if any multiple output pairs have a missing file.
  this->CheckMultipleOutputs(verbose);

  std::string dir = cmSystemTools::GetFilenamePath(tgtInfo);
  std::string internalDependFile = dir + "/depend.internal";
  std::string dependFile = dir + "/depend.make";

  // If the target DependInfo.cmake file has changed since the last
  // time dependencies were scanned then force rescanning.  This may
  // happen when a new source file is added and CMake regenerates the
  // project but no other sources were touched.
  bool needRescanDependInfo = false;
  cmFileTimeComparison* ftc =
    this->GlobalGenerator->GetCMakeInstance()->GetFileComparison();
  {
    int result;
    if (!ftc->FileTimeCompare(internalDependFile.c_str(), tgtInfo, &result) ||
        result < 0) {
      if (verbose) {
        std::ostringstream msg;
        msg << "Dependee \"" << tgtInfo << "\" is newer than depender \""
            << internalDependFile << "\"." << std::endl;
        cmSystemTools::Stdout(msg.str().c_str());
      }
      needRescanDependInfo = true;
    }
  }

  // If the directory information is newer than depend.internal, include dirs
  // may have changed. In this case discard all old dependencies.
  bool needRescanDirInfo = false;
  std::string dirInfoFile = this->GetCurrentBinaryDirectory();
  dirInfoFile += cmake::GetCMakeFilesDirectory();
  dirInfoFile += "/CMakeDirectoryInformation.cmake";
  {
    int result;
    if (!ftc->FileTimeCompare(internalDependFile.c_str(), dirInfoFile.c_str(),
                              &result) ||
        result < 0) {
      if (verbose) {
        std::ostringstream msg;
        msg << "Dependee \"" << dirInfoFile << "\" is newer than depender \""
            << internalDependFile << "\"." << std::endl;
        cmSystemTools::Stdout(msg.str().c_str());
      }
      needRescanDirInfo = true;
    }
  }

  // Check the implicit dependencies to see if they are up to date.
  // The build.make file may have explicit dependencies for the object
  // files but these will not affect the scanning process so they need
  // not be considered.
  std::map<std::string, cmDepends::DependencyVector> validDependencies;
  bool needRescanDependencies = false;
  if (!needRescanDirInfo) {
    cmDependsC checker;
    checker.SetVerbose(verbose);
    checker.SetFileComparison(ftc);
    // cmDependsC::Check() fills the vector validDependencies() with the
    // dependencies for those files where they are still valid, i.e. neither
    // the files themselves nor any files they depend on have changed.
    // We don't do that if the CMakeDirectoryInformation.cmake file has
    // changed, because then potentially all dependencies have changed.
    // This information is given later on to cmDependsC, which then only
    // rescans the files where it did not get valid dependencies via this
    // dependency vector. This means that in the normal case, when only
    // few or one file have been edited, then also only this one file is
    // actually scanned again, instead of all files for this target.
    needRescanDependencies = !checker.Check(
      dependFile.c_str(), internalDependFile.c_str(), validDependencies);
  }

  if (needRescanDependInfo || needRescanDirInfo || needRescanDependencies) {
    // The dependencies must be regenerated.
    std::string targetName = cmSystemTools::GetFilenameName(dir);
    targetName = targetName.substr(0, targetName.length() - 4);
    std::string message = "Scanning dependencies of target ";
    message += targetName;
    cmSystemTools::MakefileColorEcho(cmsysTerminal_Color_ForegroundMagenta |
                                       cmsysTerminal_Color_ForegroundBold,
                                     message.c_str(), true, color);

    return this->ScanDependencies(dir.c_str(), validDependencies);
  }

  // The dependencies are already up-to-date.
  return true;
}

bool cmLocalUnixMakefileGenerator3::ScanDependencies(
  const char* targetDir,
  std::map<std::string, cmDepends::DependencyVector>& validDeps)
{
  // Read the directory information file.
  cmMakefile* mf = this->Makefile;
  bool haveDirectoryInfo = false;
  std::string dirInfoFile = this->GetCurrentBinaryDirectory();
  dirInfoFile += cmake::GetCMakeFilesDirectory();
  dirInfoFile += "/CMakeDirectoryInformation.cmake";
  if (mf->ReadListFile(dirInfoFile.c_str()) &&
      !cmSystemTools::GetErrorOccuredFlag()) {
    haveDirectoryInfo = true;
  }

  // Lookup useful directory information.
  if (haveDirectoryInfo) {
    // Test whether we need to force Unix paths.
    if (const char* force = mf->GetDefinition("CMAKE_FORCE_UNIX_PATHS")) {
      if (!cmSystemTools::IsOff(force)) {
        cmSystemTools::SetForceUnixPaths(true);
      }
    }

    // Setup relative path top directories.
    if (const char* relativePathTopSource =
          mf->GetDefinition("CMAKE_RELATIVE_PATH_TOP_SOURCE")) {
      this->StateSnapshot.GetDirectory().SetRelativePathTopSource(
        relativePathTopSource);
    }
    if (const char* relativePathTopBinary =
          mf->GetDefinition("CMAKE_RELATIVE_PATH_TOP_BINARY")) {
      this->StateSnapshot.GetDirectory().SetRelativePathTopBinary(
        relativePathTopBinary);
    }
  } else {
    cmSystemTools::Error("Directory Information file not found");
  }

  // create the file stream for the depends file
  std::string dir = targetDir;

  // Open the make depends file.  This should be copy-if-different
  // because the make tool may try to reload it needlessly otherwise.
  std::string ruleFileNameFull = dir;
  ruleFileNameFull += "/depend.make";
  cmGeneratedFileStream ruleFileStream(
    ruleFileNameFull.c_str(), false,
    this->GlobalGenerator->GetMakefileEncoding());
  ruleFileStream.SetCopyIfDifferent(true);
  if (!ruleFileStream) {
    return false;
  }

  // Open the cmake dependency tracking file.  This should not be
  // copy-if-different because dependencies are re-scanned when it is
  // older than the DependInfo.cmake.
  std::string internalRuleFileNameFull = dir;
  internalRuleFileNameFull += "/depend.internal";
  cmGeneratedFileStream internalRuleFileStream(
    internalRuleFileNameFull.c_str(), false,
    this->GlobalGenerator->GetMakefileEncoding());
  if (!internalRuleFileStream) {
    return false;
  }

  this->WriteDisclaimer(ruleFileStream);
  this->WriteDisclaimer(internalRuleFileStream);

  // for each language we need to scan, scan it
  const char* langStr = mf->GetSafeDefinition("CMAKE_DEPENDS_LANGUAGES");
  std::vector<std::string> langs;
  cmSystemTools::ExpandListArgument(langStr, langs);
  for (std::vector<std::string>::iterator li = langs.begin();
       li != langs.end(); ++li) {
    // construct the checker
    std::string lang = *li;

    // Create the scanner for this language
    cmDepends* scanner = CM_NULLPTR;
    if (lang == "C" || lang == "CXX" || lang == "RC" || lang == "ASM" ||
        lang == "CUDA") {
      // TODO: Handle RC (resource files) dependencies correctly.
      scanner = new cmDependsC(this, targetDir, lang, &validDeps);
    }
#ifdef CMAKE_BUILD_WITH_CMAKE
    else if (lang == "Fortran") {
      scanner = new cmDependsFortran(this);
    } else if (lang == "Java") {
      scanner = new cmDependsJava();
    }
#endif

    if (scanner) {
      scanner->SetLocalGenerator(this);
      scanner->SetFileComparison(
        this->GlobalGenerator->GetCMakeInstance()->GetFileComparison());
      scanner->SetLanguage(lang);
      scanner->SetTargetDirectory(dir.c_str());
      scanner->Write(ruleFileStream, internalRuleFileStream);

      // free the scanner for this language
      delete scanner;
    }
  }

  return true;
}

void cmLocalUnixMakefileGenerator3::CheckMultipleOutputs(bool verbose)
{
  cmMakefile* mf = this->Makefile;

  // Get the string listing the multiple output pairs.
  const char* pairs_string = mf->GetDefinition("CMAKE_MULTIPLE_OUTPUT_PAIRS");
  if (!pairs_string) {
    return;
  }

  // Convert the string to a list and preserve empty entries.
  std::vector<std::string> pairs;
  cmSystemTools::ExpandListArgument(pairs_string, pairs, true);
  for (std::vector<std::string>::const_iterator i = pairs.begin();
       i != pairs.end() && (i + 1) != pairs.end();) {
    const std::string& depender = *i++;
    const std::string& dependee = *i++;

    // If the depender is missing then delete the dependee to make
    // sure both will be regenerated.
    if (cmSystemTools::FileExists(dependee.c_str()) &&
        !cmSystemTools::FileExists(depender.c_str())) {
      if (verbose) {
        std::ostringstream msg;
        msg << "Deleting primary custom command output \"" << dependee
            << "\" because another output \"" << depender
            << "\" does not exist." << std::endl;
        cmSystemTools::Stdout(msg.str().c_str());
      }
      cmSystemTools::RemoveFile(dependee);
    }
  }
}

void cmLocalUnixMakefileGenerator3::WriteLocalAllRules(
  std::ostream& ruleFileStream)
{
  this->WriteDisclaimer(ruleFileStream);

  // Write the main entry point target.  This must be the VERY first
  // target so that make with no arguments will run it.
  {
    // Just depend on the all target to drive the build.
    std::vector<std::string> depends;
    std::vector<std::string> no_commands;
    depends.push_back("all");

    // Write the rule.
    this->WriteMakeRule(ruleFileStream,
                        "Default target executed when no arguments are "
                        "given to make.",
                        "default_target", depends, no_commands, true);

    // Help out users that try "gmake target1 target2 -j".
    cmGlobalUnixMakefileGenerator3* gg =
      static_cast<cmGlobalUnixMakefileGenerator3*>(this->GlobalGenerator);
    if (gg->AllowNotParallel()) {
      std::vector<std::string> no_depends;
      this->WriteMakeRule(ruleFileStream, "Allow only one \"make -f "
                                          "Makefile2\" at a time, but pass "
                                          "parallelism.",
                          ".NOTPARALLEL", no_depends, no_commands, false);
    }
  }

  this->WriteSpecialTargetsTop(ruleFileStream);

  // Include the progress variables for the target.
  // Write all global targets
  this->WriteDivider(ruleFileStream);
  ruleFileStream << "# Targets provided globally by CMake.\n"
                 << "\n";
  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
  std::vector<cmGeneratorTarget*>::const_iterator glIt;
  for (glIt = targets.begin(); glIt != targets.end(); ++glIt) {
    if ((*glIt)->GetType() == cmStateEnums::GLOBAL_TARGET) {
      std::string targetString =
        "Special rule for the target " + (*glIt)->GetName();
      std::vector<std::string> commands;
      std::vector<std::string> depends;

      const char* text = (*glIt)->GetProperty("EchoString");
      if (!text) {
        text = "Running external command ...";
      }
      depends.insert(depends.end(), (*glIt)->GetUtilities().begin(),
                     (*glIt)->GetUtilities().end());
      this->AppendEcho(commands, text,
                       cmLocalUnixMakefileGenerator3::EchoGlobal);

      cmGeneratorTarget* gt = *glIt;

      // Global targets store their rules in pre- and post-build commands.
      this->AppendCustomDepends(depends, gt->GetPreBuildCommands());
      this->AppendCustomDepends(depends, gt->GetPostBuildCommands());
      this->AppendCustomCommands(commands, gt->GetPreBuildCommands(), gt,
                                 this->GetCurrentBinaryDirectory());
      this->AppendCustomCommands(commands, gt->GetPostBuildCommands(), gt,
                                 this->GetCurrentBinaryDirectory());
      std::string targetName = gt->GetName();
      this->WriteMakeRule(ruleFileStream, targetString.c_str(), targetName,
                          depends, commands, true);

      // Provide a "/fast" version of the target.
      depends.clear();
      if ((targetName == "install") || (targetName == "install/local") ||
          (targetName == "install/strip")) {
        // Provide a fast install target that does not depend on all
        // but has the same command.
        depends.push_back("preinstall/fast");
      } else {
        // Just forward to the real target so at least it will work.
        depends.push_back(targetName);
        commands.clear();
      }
      targetName += "/fast";
      this->WriteMakeRule(ruleFileStream, targetString.c_str(), targetName,
                          depends, commands, true);
    }
  }

  std::vector<std::string> depends;
  std::vector<std::string> commands;

  // Write the all rule.
  std::string recursiveTarget = this->GetCurrentBinaryDirectory();
  recursiveTarget += "/all";

  depends.push_back("cmake_check_build_system");

  std::string progressDir = this->GetBinaryDirectory();
  progressDir += cmake::GetCMakeFilesDirectory();
  {
    std::ostringstream progCmd;
    progCmd << "$(CMAKE_COMMAND) -E cmake_progress_start ";
    progCmd << this->ConvertToOutputFormat(
      cmSystemTools::CollapseFullPath(progressDir), cmOutputConverter::SHELL);

    std::string progressFile = cmake::GetCMakeFilesDirectory();
    progressFile += "/progress.marks";
    std::string progressFileNameFull = this->ConvertToFullPath(progressFile);
    progCmd << " "
            << this->ConvertToOutputFormat(
                 cmSystemTools::CollapseFullPath(progressFileNameFull),
                 cmOutputConverter::SHELL);
    commands.push_back(progCmd.str());
  }
  std::string mf2Dir = cmake::GetCMakeFilesDirectoryPostSlash();
  mf2Dir += "Makefile2";
  commands.push_back(
    this->GetRecursiveMakeCall(mf2Dir.c_str(), recursiveTarget));
  this->CreateCDCommand(commands, this->GetBinaryDirectory(),
                        this->GetCurrentBinaryDirectory());
  {
    std::ostringstream progCmd;
    progCmd << "$(CMAKE_COMMAND) -E cmake_progress_start "; // # 0
    progCmd << this->ConvertToOutputFormat(
      cmSystemTools::CollapseFullPath(progressDir), cmOutputConverter::SHELL);
    progCmd << " 0";
    commands.push_back(progCmd.str());
  }
  this->WriteMakeRule(ruleFileStream, "The main all target", "all", depends,
                      commands, true);

  // Write the clean rule.
  recursiveTarget = this->GetCurrentBinaryDirectory();
  recursiveTarget += "/clean";
  commands.clear();
  depends.clear();
  commands.push_back(
    this->GetRecursiveMakeCall(mf2Dir.c_str(), recursiveTarget));
  this->CreateCDCommand(commands, this->GetBinaryDirectory(),
                        this->GetCurrentBinaryDirectory());
  this->WriteMakeRule(ruleFileStream, "The main clean target", "clean",
                      depends, commands, true);
  commands.clear();
  depends.clear();
  depends.push_back("clean");
  this->WriteMakeRule(ruleFileStream, "The main clean target", "clean/fast",
                      depends, commands, true);

  // Write the preinstall rule.
  recursiveTarget = this->GetCurrentBinaryDirectory();
  recursiveTarget += "/preinstall";
  commands.clear();
  depends.clear();
  const char* noall =
    this->Makefile->GetDefinition("CMAKE_SKIP_INSTALL_ALL_DEPENDENCY");
  if (!noall || cmSystemTools::IsOff(noall)) {
    // Drive the build before installing.
    depends.push_back("all");
  } else {
    // At least make sure the build system is up to date.
    depends.push_back("cmake_check_build_system");
  }
  commands.push_back(
    this->GetRecursiveMakeCall(mf2Dir.c_str(), recursiveTarget));
  this->CreateCDCommand(commands, this->GetBinaryDirectory(),
                        this->GetCurrentBinaryDirectory());
  this->WriteMakeRule(ruleFileStream, "Prepare targets for installation.",
                      "preinstall", depends, commands, true);
  depends.clear();
  this->WriteMakeRule(ruleFileStream, "Prepare targets for installation.",
                      "preinstall/fast", depends, commands, true);

  // write the depend rule, really a recompute depends rule
  depends.clear();
  commands.clear();
  std::string cmakefileName = cmake::GetCMakeFilesDirectoryPostSlash();
  cmakefileName += "Makefile.cmake";
  std::string runRule =
    "$(CMAKE_COMMAND) -H$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR)";
  runRule += " --check-build-system ";
  runRule +=
    this->ConvertToOutputFormat(cmakefileName, cmOutputConverter::SHELL);
  runRule += " 1";
  commands.push_back(runRule);
  this->CreateCDCommand(commands, this->GetBinaryDirectory(),
                        this->GetCurrentBinaryDirectory());
  this->WriteMakeRule(ruleFileStream, "clear depends", "depend", depends,
                      commands, true);
}

void cmLocalUnixMakefileGenerator3::ClearDependencies(cmMakefile* mf,
                                                      bool verbose)
{
  // Get the list of target files to check
  const char* infoDef = mf->GetDefinition("CMAKE_DEPEND_INFO_FILES");
  if (!infoDef) {
    return;
  }
  std::vector<std::string> files;
  cmSystemTools::ExpandListArgument(infoDef, files);

  // Each depend information file corresponds to a target.  Clear the
  // dependencies for that target.
  cmDepends clearer;
  clearer.SetVerbose(verbose);
  for (std::vector<std::string>::iterator l = files.begin(); l != files.end();
       ++l) {
    std::string dir = cmSystemTools::GetFilenamePath(*l);

    // Clear the implicit dependency makefile.
    std::string dependFile = dir + "/depend.make";
    clearer.Clear(dependFile.c_str());

    // Remove the internal dependency check file to force
    // regeneration.
    std::string internalDependFile = dir + "/depend.internal";
    cmSystemTools::RemoveFile(internalDependFile);
  }
}

namespace {
// Helper predicate for removing absolute paths that don't point to the
// source or binary directory. It is used when CMAKE_DEPENDS_IN_PROJECT_ONLY
// is set ON, to only consider in-project dependencies during the build.
class NotInProjectDir
{
public:
  // Constructor with the source and binary directory's path
  NotInProjectDir(const std::string& sourceDir, const std::string& binaryDir)
    : SourceDir(sourceDir)
    , BinaryDir(binaryDir)
  {
  }

  // Operator evaluating the predicate
  bool operator()(const std::string& path) const
  {
    // Keep all relative paths:
    if (!cmSystemTools::FileIsFullPath(path)) {
      return false;
    }
    // If it's an absolute path, check if it starts with the source
    // direcotory:
    return (
      !(IsInDirectory(SourceDir, path) || IsInDirectory(BinaryDir, path)));
  }

private:
  // Helper function used by the predicate
  static bool IsInDirectory(const std::string& baseDir,
                            const std::string& testDir)
  {
    // First check if the test directory "starts with" the base directory:
    if (testDir.find(baseDir) != 0) {
      return false;
    }
    // If it does, then check that it's either the same string, or that the
    // next character is a slash:
    return ((testDir.size() == baseDir.size()) ||
            (testDir[baseDir.size()] == '/'));
  }

  // The path to the source directory
  std::string SourceDir;
  // The path to the binary directory
  std::string BinaryDir;
};
}

void cmLocalUnixMakefileGenerator3::WriteDependLanguageInfo(
  std::ostream& cmakefileStream, cmGeneratorTarget* target)
{
  ImplicitDependLanguageMap const& implicitLangs =
    this->GetImplicitDepends(target);

  // list the languages
  cmakefileStream
    << "# The set of languages for which implicit dependencies are needed:\n";
  cmakefileStream << "set(CMAKE_DEPENDS_LANGUAGES\n";
  for (ImplicitDependLanguageMap::const_iterator l = implicitLangs.begin();
       l != implicitLangs.end(); ++l) {
    cmakefileStream << "  \"" << l->first << "\"\n";
  }
  cmakefileStream << "  )\n";

  // now list the files for each language
  cmakefileStream
    << "# The set of files for implicit dependencies of each language:\n";
  for (ImplicitDependLanguageMap::const_iterator l = implicitLangs.begin();
       l != implicitLangs.end(); ++l) {
    cmakefileStream << "set(CMAKE_DEPENDS_CHECK_" << l->first << "\n";
    ImplicitDependFileMap const& implicitPairs = l->second;

    // for each file pair
    for (ImplicitDependFileMap::const_iterator pi = implicitPairs.begin();
         pi != implicitPairs.end(); ++pi) {
      for (cmDepends::DependencyVector::const_iterator di = pi->second.begin();
           di != pi->second.end(); ++di) {
        cmakefileStream << "  \"" << *di << "\" ";
        cmakefileStream << "\"" << pi->first << "\"\n";
      }
    }
    cmakefileStream << "  )\n";

    // Tell the dependency scanner what compiler is used.
    std::string cidVar = "CMAKE_";
    cidVar += l->first;
    cidVar += "_COMPILER_ID";
    const char* cid = this->Makefile->GetDefinition(cidVar);
    if (cid && *cid) {
      cmakefileStream << "set(CMAKE_" << l->first << "_COMPILER_ID \"" << cid
                      << "\")\n";
    }

    // Build a list of preprocessor definitions for the target.
    std::set<std::string> defines;
    this->AddCompileDefinitions(defines, target, this->ConfigName, l->first);
    if (!defines.empty()) {
      /* clang-format off */
      cmakefileStream
        << "\n"
        << "# Preprocessor definitions for this target.\n"
        << "set(CMAKE_TARGET_DEFINITIONS_" << l->first << "\n";
      /* clang-format on */
      for (std::set<std::string>::const_iterator di = defines.begin();
           di != defines.end(); ++di) {
        cmakefileStream << "  " << cmOutputConverter::EscapeForCMake(*di)
                        << "\n";
      }
      cmakefileStream << "  )\n";
    }

    // Target-specific include directories:
    cmakefileStream << "\n"
                    << "# The include file search paths:\n";
    cmakefileStream << "set(CMAKE_" << l->first << "_TARGET_INCLUDE_PATH\n";
    std::vector<std::string> includes;

    const std::string& config =
      this->Makefile->GetSafeDefinition("CMAKE_BUILD_TYPE");
    this->GetIncludeDirectories(includes, target, l->first, config);
    std::string binaryDir = this->GetState()->GetBinaryDirectory();
    if (this->Makefile->IsOn("CMAKE_DEPENDS_IN_PROJECT_ONLY")) {
      const char* sourceDir = this->GetState()->GetSourceDirectory();
      cmEraseIf(includes, ::NotInProjectDir(sourceDir, binaryDir));
    }
    for (std::vector<std::string>::iterator i = includes.begin();
         i != includes.end(); ++i) {
      cmakefileStream << "  \""
                      << this->MaybeConvertToRelativePath(binaryDir, *i)
                      << "\"\n";
    }
    cmakefileStream << "  )\n";
  }

  // Store include transform rule properties.  Write the directory
  // rules first because they may be overridden by later target rules.
  std::vector<std::string> transformRules;
  if (const char* xform =
        this->Makefile->GetProperty("IMPLICIT_DEPENDS_INCLUDE_TRANSFORM")) {
    cmSystemTools::ExpandListArgument(xform, transformRules);
  }
  if (const char* xform =
        target->GetProperty("IMPLICIT_DEPENDS_INCLUDE_TRANSFORM")) {
    cmSystemTools::ExpandListArgument(xform, transformRules);
  }
  if (!transformRules.empty()) {
    cmakefileStream << "set(CMAKE_INCLUDE_TRANSFORMS\n";
    for (std::vector<std::string>::const_iterator tri = transformRules.begin();
         tri != transformRules.end(); ++tri) {
      cmakefileStream << "  " << cmOutputConverter::EscapeForCMake(*tri)
                      << "\n";
    }
    cmakefileStream << "  )\n";
  }
}

void cmLocalUnixMakefileGenerator3::WriteDisclaimer(std::ostream& os)
{
  os << "# CMAKE generated file: DO NOT EDIT!\n"
     << "# Generated by \"" << this->GlobalGenerator->GetName() << "\""
     << " Generator, CMake Version " << cmVersion::GetMajorVersion() << "."
     << cmVersion::GetMinorVersion() << "\n\n";
}

std::string cmLocalUnixMakefileGenerator3::GetRecursiveMakeCall(
  const char* makefile, const std::string& tgt)
{
  // Call make on the given file.
  std::string cmd;
  cmd += "$(MAKE) -f ";
  cmd += this->ConvertToOutputFormat(makefile, cmOutputConverter::SHELL);
  cmd += " ";

  cmGlobalUnixMakefileGenerator3* gg =
    static_cast<cmGlobalUnixMakefileGenerator3*>(this->GlobalGenerator);
  // Pass down verbosity level.
  if (!gg->MakeSilentFlag.empty()) {
    cmd += gg->MakeSilentFlag;
    cmd += " ";
  }

  // Most unix makes will pass the command line flags to make down to
  // sub-invoked makes via an environment variable.  However, some
  // makes do not support that, so you have to pass the flags
  // explicitly.
  if (gg->PassMakeflags) {
    cmd += "-$(MAKEFLAGS) ";
  }

  // Add the target.
  if (!tgt.empty()) {
    // The make target is always relative to the top of the build tree.
    std::string tgt2 =
      this->MaybeConvertToRelativePath(this->GetBinaryDirectory(), tgt);

    // The target may have been written with windows paths.
    cmSystemTools::ConvertToOutputSlashes(tgt2);

    // Escape one extra time if the make tool requires it.
    if (this->MakeCommandEscapeTargetTwice) {
      tgt2 = this->EscapeForShell(tgt2, true, false);
    }

    // The target name is now a string that should be passed verbatim
    // on the command line.
    cmd += this->EscapeForShell(tgt2, true, false);
  }
  return cmd;
}

void cmLocalUnixMakefileGenerator3::WriteDivider(std::ostream& os)
{
  os << "#======================================"
     << "=======================================\n";
}

void cmLocalUnixMakefileGenerator3::WriteCMakeArgument(std::ostream& os,
                                                       const char* s)
{
  // Write the given string to the stream with escaping to get it back
  // into CMake through the lexical scanner.
  os << "\"";
  for (const char* c = s; *c; ++c) {
    if (*c == '\\') {
      os << "\\\\";
    } else if (*c == '"') {
      os << "\\\"";
    } else {
      os << *c;
    }
  }
  os << "\"";
}

std::string cmLocalUnixMakefileGenerator3::ConvertToQuotedOutputPath(
  const char* p, bool useWatcomQuote)
{
  // Split the path into its components.
  std::vector<std::string> components;
  cmSystemTools::SplitPath(p, components);

  // Open the quoted result.
  std::string result;
  if (useWatcomQuote) {
#if defined(_WIN32) && !defined(__CYGWIN__)
    result = "'";
#else
    result = "\"'";
#endif
  } else {
    result = "\"";
  }

  // Return an empty path if there are no components.
  if (!components.empty()) {
    // Choose a slash direction and fix root component.
    const char* slash = "/";
#if defined(_WIN32) && !defined(__CYGWIN__)
    if (!cmSystemTools::GetForceUnixPaths()) {
      slash = "\\";
      for (std::string::iterator i = components[0].begin();
           i != components[0].end(); ++i) {
        if (*i == '/') {
          *i = '\\';
        }
      }
    }
#endif

    // Begin the quoted result with the root component.
    result += components[0];

    if (components.size() > 1) {
      // Now add the rest of the components separated by the proper slash
      // direction for this platform.
      std::vector<std::string>::const_iterator compEnd = std::remove(
        components.begin() + 1, components.end() - 1, std::string());
      std::vector<std::string>::const_iterator compStart =
        components.begin() + 1;
      result += cmJoin(cmMakeRange(compStart, compEnd), slash);
      // Only the last component can be empty to avoid double slashes.
      result += slash;
      result += components.back();
    }
  }

  // Close the quoted result.
  if (useWatcomQuote) {
#if defined(_WIN32) && !defined(__CYGWIN__)
    result += "'";
#else
    result += "'\"";
#endif
  } else {
    result += "\"";
  }

  return result;
}

std::string cmLocalUnixMakefileGenerator3::GetTargetDirectory(
  cmGeneratorTarget const* target) const
{
  std::string dir = cmake::GetCMakeFilesDirectoryPostSlash();
  dir += target->GetName();
#if defined(__VMS)
  dir += "_dir";
#else
  dir += ".dir";
#endif
  return dir;
}

cmLocalUnixMakefileGenerator3::ImplicitDependLanguageMap const&
cmLocalUnixMakefileGenerator3::GetImplicitDepends(const cmGeneratorTarget* tgt)
{
  return this->ImplicitDepends[tgt->GetName()];
}

void cmLocalUnixMakefileGenerator3::AddImplicitDepends(
  const cmGeneratorTarget* tgt, const std::string& lang, const char* obj,
  const char* src)
{
  this->ImplicitDepends[tgt->GetName()][lang][obj].push_back(src);
}

void cmLocalUnixMakefileGenerator3::CreateCDCommand(
  std::vector<std::string>& commands, const char* tgtDir,
  std::string const& relDir)
{
  // do we need to cd?
  if (tgtDir == relDir) {
    return;
  }

  // In a Windows shell we must change drive letter too.  The shell
  // used by NMake and Borland make does not support "cd /d" so this
  // feature simply cannot work with them (Borland make does not even
  // support changing the drive letter with just "d:").
  const char* cd_cmd = this->IsMinGWMake() ? "cd /d " : "cd ";

  cmGlobalUnixMakefileGenerator3* gg =
    static_cast<cmGlobalUnixMakefileGenerator3*>(this->GlobalGenerator);
  if (!gg->UnixCD) {
    // On Windows we must perform each step separately and then change
    // back because the shell keeps the working directory between
    // commands.
    std::string cmd = cd_cmd;
    cmd += this->ConvertToOutputForExisting(tgtDir);
    commands.insert(commands.begin(), cmd);

    // Change back to the starting directory.
    cmd = cd_cmd;
    cmd += this->ConvertToOutputForExisting(relDir);
    commands.push_back(cmd);
  } else {
    // On UNIX we must construct a single shell command to change
    // directory and build because make resets the directory between
    // each command.
    std::string outputForExisting = this->ConvertToOutputForExisting(tgtDir);
    std::string prefix = cd_cmd + outputForExisting + " && ";
    std::transform(commands.begin(), commands.end(), commands.begin(),
                   std::bind1st(std::plus<std::string>(), prefix));
  }
}

std::string cmLocalUnixMakefileGenerator3::MaybeConvertToRelativePath(
  std::string const& base, std::string const& path)
{
  if (!cmOutputConverter::ContainedInDirectory(
        base, path, this->GetStateSnapshot().GetDirectory())) {
    return path;
  }
  return cmOutputConverter::ForceToRelativePath(base, path);
}