The Eclipse SDK requires roughly 5.5 Million lines of Java code and 800Klocs of other stuff.
I counted
Platform UI, UA, Text, Team, Runtime, Resources, Debug, and Common
JDT
SWT
EMF
ECF
Platform UI
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 6122 133991 367375 616529
XML 133 817 599 18571
HTML 146 548 92 5388
CSS 41 400 519 1817
Maven 51 135 502 1231
Markdown 15 136 0 298
XMI 2 0 0 123
Ant 2 38 36 84
INI 2 0 0 5
-------------------------------------------------------------------------------
SUM: 6514 136065 369123 644046
-------------------------------------------------------------------------------
Platform UA
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 1062 17929 36166 101154
XML 272 1711 3028 52412
SVG 43 42 42 16629
HTML 113 1002 382 6000
CSS 86 1319 1746 5822
_javascript_ 21 619 719 4879
DTD 5 1557 2382 4407
JSP 42 783 583 4086
Maven 15 31 134 593
XHTML 25 128 64 549
XSD 8 64 4 374
JSON 3 0 0 263
INI 8 57 0 249
Markdown 2 58 0 163
-------------------------------------------------------------------------------
SUM: 1705 25300 45250 197580
-------------------------------------------------------------------------------
Platform Text
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 1295 35822 83456 150510
XML 27 229 267 4195
HTML 42 203 12 2330
Maven 11 22 113 335
CSS 1 3 13 8
Markdown 1 2 0 3
-------------------------------------------------------------------------------
SUM: 1377 36281 83861 157381
-------------------------------------------------------------------------------
Platform Team
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 1605 32854 73393 198104
XML 45 402 1451 90470
HTML 125 936 100 7156
MSBuild script 2 0 0 658
Maven 27 46 253 558
C++ 1 103 61 318
DOS Batch 3 17 38 107
C/C++ Header 2 8 37 25
INI 1 7 0 20
DTD 1 0 0 8
CSS 3 1 0 7
Markdown 1 2 0 6
C 1 0 0 1
-------------------------------------------------------------------------------
SUM: 1817 34376 75333 297438
-------------------------------------------------------------------------------
SWT
-----------------------------------------------------------------------------------
Language files blank comment code
-----------------------------------------------------------------------------------
Java 2232 47194 198467 374976
C 56 5248 2049 58462
C/C++ Header 51 507 902 6854
C++ 7 390 151 3511
XML 16 177 127 1824
HTML 50 133 0 1386
Bourne Shell 7 126 155 635
Maven 17 31 172 585
Markdown 10 168 0 413
CSS 7 31 0 130
Windows Resource File 3 8 41 103
DOS Batch 1 12 0 87
Python 2 25 29 61
Ant 1 13 10 51
make 3 11 4 26
Dockerfile 1 9 3 23
SVG 1 0 0 1
-----------------------------------------------------------------------------------
SUM: 2465 54083 202110 449128
-----------------------------------------------------------------------------------
Runtime
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 506 9211 25460 50204
XML 38 70 64 971
HTML 12 16 0 689
Maven 8 23 86 229
Markdown 4 44 0 68
INI 1 7 0 20
-------------------------------------------------------------------------------
SUM: 569 9371 25610 52181
-------------------------------------------------------------------------------
Platform Resources
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 666 14989 50324 96399
XML 17 52 94 1215
C 3 150 342 790
HTML 12 65 0 626
Maven 14 40 140 463
C/C++ Header 3 52 274 136
DOS Batch 5 11 2 105
make 2 15 33 33
INI 1 7 0 20
Markdown 1 2 0 6
-------------------------------------------------------------------------------
SUM: 724 15383 51209 99793
-------------------------------------------------------------------------------
Platform
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 471 9065 19522 52979
XML 126 2989 449 35898
DTD 1 419 1 4762
SVG 9 43 7 2858
Ant 3 17 211 2160
CSS 10 74 33 612
Maven 10 16 95 271
INI 4 37 0 96
HTML 4 4 0 81
-------------------------------------------------------------------------------
SUM: 638 12664 20318 99717
-------------------------------------------------------------------------------
Debug
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 1550 28502 83095 151087
XML 22 137 269 4952
HTML 19 122 0 731
Maven 8 15 81 203
CSS 3 7 41 45
Ant 1 10 18 41
-------------------------------------------------------------------------------
SUM: 1603 28793 83504 157059
-------------------------------------------------------------------------------
Platform Common
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
HTML 1676 11349 712 148800
SVG 456 213 213 112963
XML 63 1209 933 11557
Maven 8 16 92 782
CSS 13 66 51 413
XHTML 9 66 0 395
Java 5 49 53 310
JSON 4 1 0 221
Ant 2 30 0 168
-------------------------------------------------------------------------------
SUM: 2236 12999 2054 275609
-------------------------------------------------------------------------------
JDT Core
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 7581 120395 299678 1590318
HTML 104 3291 1256 43095
XML 54 488 1016 5238
ANTLR Grammar 1 501 0 2615
Maven 20 71 222 1578
Ant 2 14 28 93
DTD 1 0 0 90
DOS Batch 1 48 29 84
CSS 2 8 7 32
Dockerfile 1 6 1 24
Bourne Shell 4 5 26 17
Markdown 1 6 0 14
-------------------------------------------------------------------------------
SUM: 7772 124833 302263 1643198
-------------------------------------------------------------------------------
JDT UI
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 10596 152098 181000 798018
XML 69 1446 540 13443
HTML 59 159 0 2577
Maven 24 40 224 614
CSS 4 14 40 195
Markdown 1 26 0 42
JSP 2 9 2 33
-------------------------------------------------------------------------------
SUM: 10755 153792 181806 814922
-------------------------------------------------------------------------------
PDE UI
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 4863 65070 154691 380038
XML 77 663 875 13022
SVG 6 6 6 2999
Maven 40 86 374 1096
XSLT 4 33 10 591
CSS 14 69 52 371
HTML 18 25 0 289
_javascript_ 1 14 5 206
Ant 19 76 192 201
Bourne Shell 2 28 4 123
XSD 3 3 15 112
XHTML 5 11 3 94
Markdown 3 38 0 59
INI 1 9 0 23
DTD 1 0 0 20
-------------------------------------------------------------------------------
SUM: 5057 66131 156227 399244
-------------------------------------------------------------------------------
ECF
----------------------------------------------------------------------------------------
Language files blank comment code
----------------------------------------------------------------------------------------
Java 2826 45559 122075 207731
XML 206 915 158 8902
HTML 49 664 0 4197
Maven 166 53 31 3363
C 11 382 397 1427
Velocity Template Language 1 32 9 312
Bourne Shell 4 34 24 309
C/C++ Header 11 88 352 297
Ant 1 32 35 180
DOS Batch 3 12 14 101
INI 5 22 0 101
Markdown 2 27 0 74
XSLT 1 12 3 46
DTD 2 0 0 17
CSS 2 0 0 10
----------------------------------------------------------------------------------------
SUM: 3290 47832 123098 227067
----------------------------------------------------------------------------------------
EMF
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Java 2844 123138 327977 644556
ANTLR Grammar 2 2334 402 33901
HTML 80 1313 739 9591
XML 190 1142 849 8538
XSD 54 599 108 7076
Maven 138 630 8 2980
Xtend 15 189 124 1628
XMI 16 1 0 227
CSS 4 15 7 194
Ant 6 25 9 147
Markdown 3 56 0 92
INI 4 14 0 46
DTD 1 0 0 7
-------------------------------------------------------------------------------
SUM: 3357 129456 330223 708983
-------------------------------------------------------------------------------
