summaryrefslogtreecommitdiffstats
path: root/build/gyp_includes/common.gypi
blob: 8acb3262786da222988d8d90e69c7d10a0308286 (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
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# IMPORTANT:
# Please don't directly include this file if you are building via gyp_chromium,
# since gyp_chromium is automatically forcing its inclusion.
{
  # Variables expected to be overriden on the GYP command line (-D) or by
  # ~/.gyp/include.gypi.
  'variables': {
    # Putting a variables dict inside another variables dict looks kind of
    # weird.  This is done so that 'host_arch', 'chromeos', etc are defined as
    # variables within the outer variables dict here.  This is necessary
    # to get these variables defined for the conditions within this variables
    # dict that operate on these variables.
    'variables': {
      'variables': {
        'variables': {
          'variables': {
            # Whether we're building a ChromeOS build.
            'chromeos%': 0,

            # Whether or not we are using the Aura windowing framework.
            'use_aura%': 0,

            # Whether or not we are building the Ash shell.
            'use_ash%': 0,
          },
          # Copy conditionally-set variables out one scope.
          'chromeos%': '<(chromeos)',
          'use_aura%': '<(use_aura)',
          'use_ash%': '<(use_ash)',

          # Whether we are using Views Toolkit
          'toolkit_views%': 0,

          # Use OpenSSL instead of NSS. Under development: see http://crbug.com/62803
          'use_openssl%': 0,

          'use_ibus%': 0,

          # Disable viewport meta tag by default.
          'enable_viewport%': 0,

          # Enable HiDPI support.
          'enable_hidpi%': 0,

          # Enable touch optimized art assets and metrics.
          'enable_touch_ui%': 0,

          # Is this change part of the android upstream bringup?
          # Allows us to *temporarily* disable certain things for
          # staging.  Only set to 1 in a GYP_DEFINES.
          'android_upstream_bringup%': 0,

          # Override buildtype to select the desired build flavor.
          # Dev - everyday build for development/testing
          # Official - release build (generally implies additional processing)
          # TODO(mmoss) Once 'buildtype' is fully supported (e.g. Windows gyp
          # conversion is done), some of the things which are now controlled by
          # 'branding', such as symbol generation, will need to be refactored
          # based on 'buildtype' (i.e. we don't care about saving symbols for
          # non-Official # builds).
          'buildtype%': 'Dev',

          'conditions': [
            # ChromeOS implies ash.
            ['chromeos==1', {
              'use_ash%': 1,
              'use_aura%': 1,
            }],

            # For now, Windows builds that |use_aura| should also imply using
            # ash. This rule should be removed for the future when Windows is
            # using the aura windows without the ash interface.
            ['use_aura==1 and OS=="win"', {
              'use_ash%': 1,
            }],
            ['use_ash==1', {
              'use_aura%': 1,
            }],

            # A flag for BSD platforms
            ['OS=="dragonfly" or OS=="freebsd" or OS=="netbsd" or \
              OS=="openbsd"', {
              'os_bsd%': 1,
            }, {
              'os_bsd%': 0,
            }],
          ],
        },
        # Copy conditionally-set variables out one scope.
        'chromeos%': '<(chromeos)',
        'use_aura%': '<(use_aura)',
        'use_ash%': '<(use_ash)',
        'os_bsd%': '<(os_bsd)',
        'use_openssl%': '<(use_openssl)',
        'use_ibus%': '<(use_ibus)',
        'enable_viewport%': '<(enable_viewport)',
        'enable_hidpi%': '<(enable_hidpi)',
        'enable_touch_ui%': '<(enable_touch_ui)',
        'android_upstream_bringup%': '<(android_upstream_bringup)',
        'buildtype%': '<(buildtype)',

        # Sets whether we're building with the Android SDK/NDK (and hence with
        # Ant, value 0), or as part of the Android system (and hence with the
        # Android build system, value 1).
        'android_build_type%': 0,

        # Compute the architecture that we're building on.
        'conditions': [
          ['OS=="win" or OS=="ios"', {
            'host_arch%': 'ia32',
          }, {
            # This handles the Unix platforms for which there is some support.
            # Anything else gets passed through, which probably won't work very
            # well; such hosts should pass an explicit target_arch to gyp.
            'host_arch%':
              '<!(uname -m | sed -e "s/i.86/ia32/;s/x86_64/x64/;s/amd64/x64/;s/arm.*/arm/;s/i86pc/ia32/")',
          }],

          # Set default value of toolkit_views based on OS.
          ['OS=="win" or chromeos==1 or use_aura==1', {
            'toolkit_views%': 1,
          }, {
            'toolkit_views%': 0,
          }],

          # Set toolkit_uses_gtk for the Chromium browser on Linux.
          ['(OS=="linux" or OS=="solaris" or os_bsd==1) and use_aura==0', {
            'toolkit_uses_gtk%': 1,
          }, {
            'toolkit_uses_gtk%': 0,
          }],

          # Enable HiDPI on Mac OS and Chrome OS.
          ['OS=="mac" or chromeos==1', {
            'enable_hidpi%': 1,
          }],

          # Enable touch UI on Metro.
          ['OS=="win"', {
            'enable_touch_ui%': 1,
          }],
        ],
      },

      # Copy conditionally-set variables out one scope.
      'chromeos%': '<(chromeos)',
      'host_arch%': '<(host_arch)',
      'toolkit_views%': '<(toolkit_views)',
      'toolkit_uses_gtk%': '<(toolkit_uses_gtk)',
      'use_aura%': '<(use_aura)',
      'use_ash%': '<(use_ash)',
      'os_bsd%': '<(os_bsd)',
      'use_openssl%': '<(use_openssl)',
      'use_ibus%': '<(use_ibus)',
      'enable_viewport%': '<(enable_viewport)',
      'enable_hidpi%': '<(enable_hidpi)',
      'enable_touch_ui%': '<(enable_touch_ui)',
      'android_upstream_bringup%': '<(android_upstream_bringup)',
      'android_build_type%': '<(android_build_type)',

      # We used to provide a variable for changing how libraries were built.
      # This variable remains until we can clean up all the users.
      # This needs to be one nested variables dict in so that dependent
      # gyp files can make use of it in their outer variables.  (Yikes!)
      # http://code.google.com/p/chromium/issues/detail?id=83308
      'library%': 'static_library',

      # Override branding to select the desired branding flavor.
      'branding%': 'Chromium',

      'buildtype%': '<(buildtype)',

      # Default architecture we're building for is the architecture we're
      # building on.
      'target_arch%': '<(host_arch)',

      # This variable tells WebCore.gyp and JavaScriptCore.gyp whether they are
      # are built under a chromium full build (1) or a webkit.org chromium
      # build (0).
      'inside_chromium_build%': 1,

      # Set to 1 to enable fast builds. It disables debug info for fastest
      # compilation.
      'fastbuild%': 0,

      # Set to 1 to enable dcheck in release without having to use the flag.
      'dcheck_always_on%': 0,

      # Disable file manager component extension by default.
      'file_manager_extension%': 0,

      # Python version.
      'python_ver%': '2.6',

      # Set ARM version (for libyuv)
      'arm_version%': 6,

      # Set ARM-v7 compilation flags
      'armv7%': 0,

      # Set Neon compilation flags (only meaningful if armv7==1).
      'arm_neon%': 1,
      'arm_neon_optional%': 0,

      # The system root for cross-compiles. Default: none.
      'sysroot%': '',

      # The system libdir used for this ABI.
      'system_libdir%': 'lib',

      # On Linux, we build with sse2 for Chromium builds.
      'disable_sse2%': 0,

      # Use libjpeg-turbo as the JPEG codec used by Chromium.
      'use_libjpeg_turbo%': 1,

      # Use system libjpeg. Note that the system's libjepg will be used even if
      # use_libjpeg_turbo is set.
      'use_system_libjpeg%': 0,

      # Use system libvpx
      'use_system_libvpx%': 0,

      # Variable 'component' is for cases where we would like to build some
      # components as dynamic shared libraries but still need variable
      # 'library' for static libraries.
      # By default, component is set to whatever library is set to and
      # it can be overriden by the GYP command line or by ~/.gyp/include.gypi.
      'component%': 'static_library',

      # Set to select the Title Case versions of strings in GRD files.
      'use_titlecase_in_grd_files%': 0,

      # Use translations provided by volunteers at launchpad.net.  This
      # currently only works on Linux.
      'use_third_party_translations%': 0,

      # Remoting compilation is enabled by default. Set to 0 to disable.
      'remoting%': 1,

      # Configuration policy is enabled by default. Set to 0 to disable.
      'configuration_policy%': 1,

      # Safe browsing is compiled in by default. Set to 0 to disable.
      'safe_browsing%': 1,

      # Speech input is compiled in by default. Set to 0 to disable.
      'input_speech%': 1,

      # Notifications are compiled in by default. Set to 0 to disable.
      'notifications%' : 1,

      # If this is set, the clang plugins used on the buildbot will be used.
      # Run tools/clang/scripts/update.sh to make sure they are compiled.
      # This causes 'clang_chrome_plugins_flags' to be set.
      # Has no effect if 'clang' is not set as well.
      'clang_use_chrome_plugins%': 1,

      # Enable building with ASAN (Clang's -faddress-sanitizer option).
      # -faddress-sanitizer only works with clang, but asan=1 implies clang=1
      # See https://sites.google.com/a/chromium.org/dev/developers/testing/addresssanitizer
      'asan%': 0,

      # Enable building with TSAN (Clang's -fthread-sanitizer option).
      # -fthread-sanitizer only works with clang, but tsan=1 implies clang=1
      # See http://clang.llvm.org/docs/ThreadSanitizer.html
      'tsan%': 0,

      # Use a modified version of Clang to intercept allocated types and sizes
      # for allocated objects. clang_type_profiler=1 implies clang=1.
      # See http://dev.chromium.org/developers/deep-memory-profiler/cpp-object-type-identifier
      # TODO(dmikurube): Support mac.  See http://crbug.com/123758#c11
      'clang_type_profiler%': 0,

      # Set to true to instrument the code with function call logger.
      # See src/third_party/cygprofile/cyg-profile.cc for details.
      'order_profiling%': 0,

      # Use the provided profiled order file to link Chrome image with it.
      # This makes Chrome faster by better using CPU cache when executing code.
      # This is known as PGO (profile guided optimization).
      # See https://sites.google.com/a/google.com/chrome-msk/dev/boot-speed-up-effort
      'order_text_section%' : "",

      # Set to 1 compile with -fPIC cflag on linux. This is a must for shared
      # libraries on linux x86-64 and arm, plus ASLR.
      'linux_fpic%': 1,

      # Whether one-click signin is enabled or not.
      'enable_one_click_signin%': 0,

      # Enable Web Intents support in WebKit.
      'enable_web_intents%': 1,

      # Enable Chrome browser extensions
      'enable_extensions%': 1,

      # Enable browser automation.
      'enable_automation%': 1,

      # Enable printing support and UI.
      'enable_printing%': 1,

      # Enable Web Intents web content registration via HTML element
      # and WebUI managing such registrations.
      'enable_web_intents_tag%': 0,

      # Webrtc compilation is enabled by default. Set to 0 to disable.
      'enable_webrtc%': 1,

      # PPAPI by default does not support plugins making calls off the main
      # thread. Set to 1 to turn on experimental support for out-of-process
      # plugins to make call of the main thread.
      'enable_pepper_threading%': 0,

      # Enables use of the session service, which is enabled by default.
      # Support for disabling depends on the platform.
      'enable_session_service%': 1,

      # Enables theme support, which is enabled by default.  Support for
      # disabling depends on the platform.
      'enable_themes%': 1,

      # Uses OEM-specific wallpaper resources on Chrome OS.
      'use_oem_wallpaper%': 0,

      # Enables support for background apps.
      'enable_background%': 1,

      # Enable the task manager by default.
      'enable_task_manager%': 1,

      # Enable FTP support by default.
      'disable_ftp_support%': 0,

      # XInput2 multitouch support is disabled by default (use_xi2_mt=0).
      # Setting to non-zero value enables XI2 MT. When XI2 MT is enabled,
      # the input value also defines the required XI2 minor minimum version.
      # For example, use_xi2_mt=2 means XI2.2 or above version is required.
      'use_xi2_mt%': 0,

      # Use of precompiled headers on Windows.
      #
      # This is on by default in VS 2010, but off by default for VS
      # 2008 because of complications that it can cause with our
      # trybots etc.
      #
      # This variable may be explicitly set to 1 (enabled) or 0
      # (disabled) in ~/.gyp/include.gypi or via the GYP command line.
      # This setting will override the default.
      #
      # Note that a setting of 1 is probably suitable for most or all
      # Windows developers using VS 2008, since precompiled headers
      # provide a build speedup of 20-25%.  There are a couple of
      # small workarounds you may need to use when using VS 2008 (but
      # not 2010), see
      # http://code.google.com/p/chromium/wiki/WindowsPrecompiledHeaders
      # for details.
      'chromium_win_pch%': 0,

      # Set this to true when building with Clang.
      # See http://code.google.com/p/chromium/wiki/Clang for details.
      'clang%': 0,

      # Enable plug-in installation by default.
      'enable_plugin_installation%': 1,

      # Enable protector service by default.
      'enable_protector_service%': 1,

      # Specifies whether to use canvas_skia.cc in place of platform
      # specific implementations of gfx::Canvas. Affects text drawing in the
      # Chrome UI.
      # TODO(asvitkine): Enable this on all platforms and delete this flag.
      #                  http://crbug.com/105550
      'use_canvas_skia%': 0,

      # Set to "tsan", "memcheck", or "drmemory" to configure the build to work
      # with one of those tools.
      'build_for_tool%': '',

      # Whether tests targets should be run, archived or just have the
      # dependencies verified. All the tests targets have the '_run' suffix,
      # e.g. base_unittests_run runs the target base_unittests. The test target
      # always calls tools/swarm_client/isolate.py. See the script's --help for
      # more information and the valid --mode values. Meant to be overriden with
      # GYP_DEFINES.
      # TODO(maruel): Converted the default from 'check' to 'noop' so work can
      # be done while the builders are being reconfigured to check out test data
      # files.
      'test_isolation_mode%': 'noop',
      # It must not be '<(PRODUCT_DIR)' alone, the '/' is necessary otherwise
      # gyp will remove duplicate flags, causing isolate.py to be confused.
      'test_isolation_outdir%': '<(PRODUCT_DIR)/isolate',

       # Force rlz to use chrome's networking stack.
      'force_rlz_use_chrome_net%': 1,

      'sas_dll_path%': '<(DEPTH)/third_party/platformsdk_win7/files/redist/x86',
      'wix_path%': '<(DEPTH)/third_party/wix',

      'conditions': [
        # TODO(epoger): Figure out how to set use_skia=1 for Mac outside of
        # the 'conditions' clause.  Initial attempts resulted in chromium and
        # webkit disagreeing on its setting.
        ['OS=="mac"', {
          'use_skia%': 1,
        }, {
          'use_skia%': 1,
        }],

        # A flag for POSIX platforms
        ['OS=="win"', {
          'os_posix%': 0,
        }, {
          'os_posix%': 1,
        }],

        # NSS usage.
        ['(OS=="linux" or OS=="solaris" or os_bsd==1) and use_openssl==0', {
          'use_nss%': 1,
        }, {
          'use_nss%': 0,
        }],

        # Flags to use X11 on non-Mac POSIX platforms
        ['OS=="win" or OS=="mac" or OS=="ios" or OS=="android"', {
          'use_glib%': 0,
          'use_x11%': 0,
        }, {
          'use_glib%': 1,
          'use_x11%': 1,
        }],

        # We always use skia text rendering in Aura on Windows, since GDI
        # doesn't agree with our BackingStore.
        # TODO(beng): remove once skia text rendering is on by default.
        ['use_aura==1 and OS=="win"', {
          'enable_skia_text%': 1,
        }],

        # A flag to enable or disable our compile-time dependency
        # on gnome-keyring. If that dependency is disabled, no gnome-keyring
        # support will be available. This option is useful
        # for Linux distributions and for Aura.
        ['chromeos==1 or use_aura==1', {
          'use_gnome_keyring%': 0,
        }, {
          'use_gnome_keyring%': 1,
        }],

        ['toolkit_uses_gtk==1 or OS=="mac" or OS=="ios"', {
          # GTK+, Mac and iOS want Title Case strings
          'use_titlecase_in_grd_files%': 1,
        }],

        # Enable file manager extension on Chrome OS.
        ['chromeos==1', {
          'file_manager_extension%': 1,
        }, {
          'file_manager_extension%': 0,
        }],

        ['OS=="win" or OS=="mac" or (OS=="linux" and use_aura==0)', {
          'enable_one_click_signin%': 1,
        }],

        ['OS=="android"', {
          'enable_extensions%': 0,
          'enable_printing%': 0,
          'enable_themes%': 0,
          'enable_webrtc%': 0,
          'proprietary_codecs%': 1,
          'remoting%': 0,
        }],

        ['OS=="ios"', {
          'configuration_policy%': 0,
          'disable_ftp_support%': 1,
          'enable_automation%': 0,
          'enable_extensions%': 0,
          'enable_printing%': 0,
          'enable_themes%': 0,
          'enable_webrtc%': 0,
          'notifications%': 0,
          'remoting%': 0,
        }],

        # Use GPU accelerated cross process image transport by default
        # on linux builds with the Aura window manager
        ['use_aura==1 and OS=="linux"', {
          'ui_compositor_image_transport%': 1,
        }, {
          'ui_compositor_image_transport%': 0,
        }],

        # Turn precompiled headers on by default for VS 2010.
        ['OS=="win" and MSVS_VERSION=="2010" and buildtype!="Official"', {
          'chromium_win_pch%': 1
        }],

        ['use_aura==1 or chromeos==1 or OS=="android"', {
          'enable_plugin_installation%': 0,
        }, {
          'enable_plugin_installation%': 1,
        }],

        ['OS=="android" or OS=="ios"', {
          'enable_protector_service%': 0,
        }, {
          'enable_protector_service%': 1,
        }],

        # linux_use_gold_binary: whether to use the binary checked into
        # third_party/gold.
        ['OS=="linux"', {
          'linux_use_gold_binary%': 1,
        }, {
          'linux_use_gold_binary%': 0,
        }],

        # linux_use_gold_flags: whether to use build flags that rely on gold.
        # On by default for x64 Linux.  Temporarily off for ChromeOS as
        # it failed on a buildbot.
        ['OS=="linux" and chromeos==0', {
          'linux_use_gold_flags%': 1,
        }, {
          'linux_use_gold_flags%': 0,
        }],

        ['OS=="android"', {
          'enable_captive_portal_detection%': 0,
        }, {
          'enable_captive_portal_detection%': 1,
        }],

        # Enable Skia UI text drawing incrementally on different platforms.
        # http://crbug.com/105550
        #
        # On Aura, this allows per-tile painting to be used in the browser
        # compositor.
        ['OS!="mac" and OS!="android"', {
          'use_canvas_skia%': 1,
        }],

        ['chromeos==1', {
          # When building for ChromeOS we dont want Chromium to use libjpeg_turbo.
          'use_libjpeg_turbo%': 0,
        }],

        ['OS=="android"', {
          # When building as part of the Android system, use system libraries
          # where possible to reduce ROM size.
          'use_system_libjpeg%': '<(android_build_type)',
        }],
      ],

      # Set this to 1 to use the Google-internal file containing
      # official API keys for Google Chrome even in a developer build.
      # Setting this variable explicitly to 1 will cause your build to
      # fail if the internal file is missing.
      #
      # Set this to 0 to not use the internal file, even when it
      # exists in your checkout.
      #
      # Leave set to 2 to have this variable implicitly set to 1 if
      # you have src/google_apis/internal/google_chrome_api_keys.h in
      # your checkout, and implicitly set to 0 if not.
      #
      # Note that official builds always behave as if this variable
      # was explicitly set to 1, i.e. they always use official keys,
      # and will fail to build if the internal file is missing.
      'use_official_google_api_keys%': 2,

      # Set these to bake the specified API keys and OAuth client
      # IDs/secrets into your build.
      #
      # If you create a build without values baked in, you can instead
      # set environment variables to provide the keys at runtime (see
      # src/google_apis/google_api_keys.h for details).  Features that
      # require server-side APIs may fail to work if no keys are
      # provided.
      #
      # Note that if you are building an official build or if
      # use_official_google_api_keys has been set to 1 (explicitly or
      # implicitly), these values will be ignored and the official
      # keys will be used instead.
      'google_api_key%': '',
      'google_default_client_id%': '',
      'google_default_client_secret%': '',
    },

    # Copy conditionally-set variables out one scope.
    'branding%': '<(branding)',
    'buildtype%': '<(buildtype)',
    'target_arch%': '<(target_arch)',
    'host_arch%': '<(host_arch)',
    'library%': 'static_library',
    'toolkit_views%': '<(toolkit_views)',
    'ui_compositor_image_transport%': '<(ui_compositor_image_transport)',
    'use_aura%': '<(use_aura)',
    'use_ash%': '<(use_ash)',
    'use_openssl%': '<(use_openssl)',
    'use_ibus%': '<(use_ibus)',
    'use_nss%': '<(use_nss)',
    'os_bsd%': '<(os_bsd)',
    'os_posix%': '<(os_posix)',
    'use_glib%': '<(use_glib)',
    'toolkit_uses_gtk%': '<(toolkit_uses_gtk)',
    'use_skia%': '<(use_skia)',
    'use_x11%': '<(use_x11)',
    'use_gnome_keyring%': '<(use_gnome_keyring)',
    'linux_fpic%': '<(linux_fpic)',
    'enable_pepper_threading%': '<(enable_pepper_threading)',
    'chromeos%': '<(chromeos)',
    'enable_viewport%': '<(enable_viewport)',
    'enable_hidpi%': '<(enable_hidpi)',
    'enable_touch_ui%': '<(enable_touch_ui)',
    'use_xi2_mt%':'<(use_xi2_mt)',
    'file_manager_extension%': '<(file_manager_extension)',
    'inside_chromium_build%': '<(inside_chromium_build)',
    'fastbuild%': '<(fastbuild)',
    'dcheck_always_on%': '<(dcheck_always_on)',
    'python_ver%': '<(python_ver)',
    'arm_version%': '<(arm_version)',
    'armv7%': '<(armv7)',
    'arm_neon%': '<(arm_neon)',
    'arm_neon_optional%': '<(arm_neon_optional)',
    'sysroot%': '<(sysroot)',
    'system_libdir%': '<(system_libdir)',
    'component%': '<(component)',
    'use_titlecase_in_grd_files%': '<(use_titlecase_in_grd_files)',
    'use_third_party_translations%': '<(use_third_party_translations)',
    'remoting%': '<(remoting)',
    'enable_one_click_signin%': '<(enable_one_click_signin)',
    'enable_webrtc%': '<(enable_webrtc)',
    'chromium_win_pch%': '<(chromium_win_pch)',
    'configuration_policy%': '<(configuration_policy)',
    'safe_browsing%': '<(safe_browsing)',
    'input_speech%': '<(input_speech)',
    'notifications%': '<(notifications)',
    'clang_use_chrome_plugins%': '<(clang_use_chrome_plugins)',
    'asan%': '<(asan)',
    'tsan%': '<(tsan)',
    'clang_type_profiler%': '<(clang_type_profiler)',
    'order_profiling%': '<(order_profiling)',
    'order_text_section%': '<(order_text_section)',
    'enable_extensions%': '<(enable_extensions)',
    'enable_web_intents%': '<(enable_web_intents)',
    'enable_web_intents_tag%': '<(enable_web_intents_tag)',
    'enable_plugin_installation%': '<(enable_plugin_installation)',
    'enable_protector_service%': '<(enable_protector_service)',
    'enable_session_service%': '<(enable_session_service)',
    'enable_themes%': '<(enable_themes)',
    'use_oem_wallpaper%': '<(use_oem_wallpaper)',
    'enable_background%': '<(enable_background)',
    'linux_use_gold_binary%': '<(linux_use_gold_binary)',
    'linux_use_gold_flags%': '<(linux_use_gold_flags)',
    'use_canvas_skia%': '<(use_canvas_skia)',
    'test_isolation_mode%': '<(test_isolation_mode)',
    'test_isolation_outdir%': '<(test_isolation_outdir)',
    'enable_automation%': '<(enable_automation)',
    'enable_printing%': '<(enable_printing)',
    'enable_captive_portal_detection%': '<(enable_captive_portal_detection)',
    'disable_ftp_support%': '<(disable_ftp_support)',
    'force_rlz_use_chrome_net%': '<(force_rlz_use_chrome_net)',
    'enable_task_manager%': '<(enable_task_manager)',
    'sas_dll_path%': '<(sas_dll_path)',
    'wix_path%': '<(wix_path)',
    'android_upstream_bringup%': '<(android_upstream_bringup)',
    'use_libjpeg_turbo%': '<(use_libjpeg_turbo)',
    'use_system_libjpeg%': '<(use_system_libjpeg)',
    'android_build_type%': '<(android_build_type)',
    'use_official_google_api_keys%': '<(use_official_google_api_keys)',
    'google_api_key%': '<(google_api_key)',
    'google_default_client_id%': '<(google_default_client_id)',
    'google_default_client_secret%': '<(google_default_client_secret)',

    # Use system yasm instead of bundled one.
    'use_system_yasm%': 0,

    # Default to enabled PIE; this is important for ASLR but we may need to be
    # able to turn it off for various reasons.
    'linux_disable_pie%': 0,

    # The release channel that this build targets. This is used to restrict
    # channel-specific build options, like which installer packages to create.
    # The default is 'all', which does no channel-specific filtering.
    'channel%': 'all',

    # Override chromium_mac_pch and set it to 0 to suppress the use of
    # precompiled headers on the Mac.  Prefix header injection may still be
    # used, but prefix headers will not be precompiled.  This is useful when
    # using distcc to distribute a build to compile slaves that don't
    # share the same compiler executable as the system driving the compilation,
    # because precompiled headers rely on pointers into a specific compiler
    # executable's image.  Setting this to 0 is needed to use an experimental
    # Linux-Mac cross compiler distcc farm.
    'chromium_mac_pch%': 1,

    # The default value for mac_strip in target_defaults. This cannot be
    # set there, per the comment about variable% in a target_defaults.
    'mac_strip_release%': 1,

    # Set to 1 to enable code coverage.  In addition to build changes
    # (e.g. extra CFLAGS), also creates a new target in the src/chrome
    # project file called "coverage".
    # Currently ignored on Windows.
    'coverage%': 0,

    # Set to 1 to force Visual C++ to use legacy debug information format /Z7.
    # This is useful for parallel compilation tools which can't support /Zi.
    # Only used on Windows.
    'win_z7%' : 0,

    # Although base/allocator lets you select a heap library via an
    # environment variable, the libcmt shim it uses sometimes gets in
    # the way.  To disable it entirely, and switch to normal msvcrt, do e.g.
    #  'win_use_allocator_shim': 0,
    #  'win_release_RuntimeLibrary': 2
    # to ~/.gyp/include.gypi, gclient runhooks --force, and do a release build.
    'win_use_allocator_shim%': 1, # 1 = shim allocator via libcmt; 0 = msvcrt

    # Whether usage of OpenMAX is enabled.
    'enable_openmax%': 0,

    # Whether proprietary audio/video codecs are assumed to be included with
    # this build (only meaningful if branding!=Chrome).
    'proprietary_codecs%': 0,

    # TODO(bradnelson): eliminate this when possible.
    # To allow local gyp files to prevent release.vsprops from being included.
    # Yes(1) means include release.vsprops.
    # Once all vsprops settings are migrated into gyp, this can go away.
    'msvs_use_common_release%': 1,

    # TODO(bradnelson): eliminate this when possible.
    # To allow local gyp files to override additional linker options for msvs.
    # Yes(1) means set use the common linker options.
    'msvs_use_common_linker_extras%': 1,

    # TODO(sgk): eliminate this if possible.
    # It would be nicer to support this via a setting in 'target_defaults'
    # in chrome/app/locales/locales.gypi overriding the setting in the
    # 'Debug' configuration in the 'target_defaults' dict below,
    # but that doesn't work as we'd like.
    'msvs_debug_link_incremental%': '2',

    # Needed for some of the largest modules.
    'msvs_debug_link_nonincremental%': '1',

    # Turns on Use Library Dependency Inputs for linking chrome.dll on Windows
    # to get incremental linking to be faster in debug builds.
    'incremental_chrome_dll%': '0',

    # The default settings for third party code for treating
    # warnings-as-errors. Ideally, this would not be required, however there
    # is some third party code that takes a long time to fix/roll. So, this
    # flag allows us to have warnings as errors in general to prevent
    # regressions in most modules, while working on the bits that are
    # remaining.
    'win_third_party_warn_as_error%': 'true',

    # This is the location of the sandbox binary. Chrome looks for this before
    # running the zygote process. If found, and SUID, it will be used to
    # sandbox the zygote process and, thus, all renderer processes.
    'linux_sandbox_path%': '',

    # Set this to true to enable SELinux support.
    'selinux%': 0,

    # Clang stuff.
    'clang%': '<(clang)',
    'make_clang_dir%': 'third_party/llvm-build/Release+Asserts',

    # These two variables can be set in GYP_DEFINES while running
    # |gclient runhooks| to let clang run a plugin in every compilation.
    # Only has an effect if 'clang=1' is in GYP_DEFINES as well.
    # Example:
    #     GYP_DEFINES='clang=1 clang_load=/abs/path/to/libPrintFunctionNames.dylib clang_add_plugin=print-fns' gclient runhooks

    'clang_load%': '',
    'clang_add_plugin%': '',

    # The default type of gtest.
    'gtest_target_type%': 'executable',

    # Enable sampling based profiler.
    # See http://google-perftools.googlecode.com/svn/trunk/doc/cpuprofile.html
    'profiling%': '0',

    # Enable strict glibc debug mode.
    'glibcxx_debug%': 0,

    # Override whether we should use Breakpad on Linux. I.e. for Chrome bot.
    'linux_breakpad%': 0,
    # And if we want to dump symbols for Breakpad-enabled builds.
    'linux_dump_symbols%': 0,
    # And if we want to strip the binary after dumping symbols.
    'linux_strip_binary%': 0,
    # Strip the test binaries needed for Linux reliability tests.
    'linux_strip_reliability_tests%': 0,

    # Enable TCMalloc.
    'linux_use_tcmalloc%': 1,

    # Disable TCMalloc's debugallocation.
    'linux_use_debugallocation%': 0,

    # Disable TCMalloc's heapchecker.
    'linux_use_heapchecker%': 0,

    # Disable shadow stack keeping used by heapcheck to unwind the stacks
    # better.
    'linux_keep_shadow_stacks%': 0,

    # Set to 1 to link against libgnome-keyring instead of using dlopen().
    'linux_link_gnome_keyring%': 0,
    # Set to 1 to link against gsettings APIs instead of using dlopen().
    'linux_link_gsettings%': 0,

    # Set Thumb compilation flags.
    'arm_thumb%': 0,

    # Set ARM fpu compilation flags (only meaningful if armv7==1 and
    # arm_neon==0).
    'arm_fpu%': 'vfpv3',

    # Set ARM float abi compilation flag.
    'arm_float_abi%': 'softfp',

    # Enable new NPDevice API.
    'enable_new_npdevice_api%': 0,

    # Enable EGLImage support in OpenMAX
    'enable_eglimage%': 1,

    # Enable a variable used elsewhere throughout the GYP files to determine
    # whether to compile in the sources for the GPU plugin / process.
    'enable_gpu%': 1,

    # .gyp files or targets should set chromium_code to 1 if they build
    # Chromium-specific code, as opposed to external code.  This variable is
    # used to control such things as the set of warnings to enable, and
    # whether warnings are treated as errors.
    'chromium_code%': 0,

    'release_valgrind_build%': 0,

    # TODO(thakis): Make this a blacklist instead, http://crbug.com/101600
    'enable_wexit_time_destructors%': 0,

    # Set to 1 to compile with the built in pdf viewer.
    'internal_pdf%': 0,

    # Set to 1 to compile with the OpenGL ES 2.0 conformance tests.
    'internal_gles2_conform_tests%': 0,

    # NOTE: When these end up in the Mac bundle, we need to replace '-' for '_'
    # so Cocoa is happy (http://crbug.com/20441).
    'locales': [
      'am', 'ar', 'bg', 'bn', 'ca', 'cs', 'da', 'de', 'el', 'en-GB',
      'en-US', 'es-419', 'es', 'et', 'fa', 'fi', 'fil', 'fr', 'gu', 'he',
      'hi', 'hr', 'hu', 'id', 'it', 'ja', 'kn', 'ko', 'lt', 'lv',
      'ml', 'mr', 'ms', 'nb', 'nl', 'pl', 'pt-BR', 'pt-PT', 'ro', 'ru',
      'sk', 'sl', 'sr', 'sv', 'sw', 'ta', 'te', 'th', 'tr', 'uk',
      'vi', 'zh-CN', 'zh-TW',
    ],

    # Pseudo locales are special locales which are used for testing and
    # debugging. They don't get copied to the final app. For more info,
    # check out https://sites.google.com/a/chromium.org/dev/Home/fake-bidi
    'pseudo_locales': [
      'fake-bidi',
    ],

    'grit_defines': [],

    # If debug_devtools is set to 1, JavaScript files for DevTools are
    # stored as is and loaded from disk. Otherwise, a concatenated file
    # is stored in resources.pak. It is still possible to load JS files
    # from disk by passing --debug-devtools cmdline switch.
    'debug_devtools%': 0,

    # The Java Bridge is not compiled in by default.
    'java_bridge%': 0,

    # Code signing for iOS binaries.  The bots need to be able to disable this.
    'chromium_ios_signing%': 1,

    # This flag is only used when disable_nacl==0 and disables all those
    # subcomponents which would require the installation of a native_client
    # untrusted toolchain.
    'disable_nacl_untrusted%': 0,

    # Disable Dart by default.
    'enable_dart%': 0,

    # The desired version of Windows SDK can be set in ~/.gyp/include.gypi.
    'msbuild_toolset%': '',

    # Native Client is enabled by default.
    'disable_nacl%': 0,

    # Whether to build full debug version for Debug configuration on Android.
    # Compared to full debug version, the default Debug configuration on Android
    # has no full v8 debug, has size optimization and linker gc section, so that
    # we can build a debug version with acceptable size and performance.
    'android_full_debug%': 0,

    # Sets the default version name and code for Android app, by default we
    # do a developer build.
    'android_app_version_name%': 'Developer Build',
    'android_app_version_code%': 0,

    'sas_dll_exists': 0, # '<!(<(PYTHON) <(DEPTH)/build/dir_exists.py <(sas_dll_path))',
    'wix_exists': 0, # '<!(<(PYTHON) <(DEPTH)/build/dir_exists.py <(wix_path))',

    'windows_sdk_default_path': '<(DEPTH)/third_party/platformsdk_win8/files',
#    'directx_sdk_default_path': '<(DEPTH)/third_party/directxsdk/files',
    'windows_sdk_path%': '<(windows_sdk_default_path)',

    'conditions': [
      #['"<!(<(PYTHON) <(DEPTH)/build/dir_exists.py <(windows_sdk_default_path))"=="True"', {
      #  'windows_sdk_path%': '<(windows_sdk_default_path)',
      #}, {
      #  'windows_sdk_path%': 'C:/Program Files (x86)/Windows Kits/8.0',
      #}],
      #['OS=="win" and "<!(<(PYTHON) <(DEPTH)/build/dir_exists.py <(directx_sdk_default_path))"=="True"', {
      #  'directx_sdk_path%': '<(directx_sdk_default_path)',
      #}, {
      #  'directx_sdk_path%': '$(DXSDK_DIR)',
      #}],
      # If use_official_google_api_keys is already set (to 0 or 1), we
      # do none of the implicit checking.  If it is set to 1 and the
      # internal keys file is missing, the build will fail at compile
      # time.  If it is set to 0 and keys are not provided by other
      # means, a warning will be printed at compile time.
      ['use_official_google_api_keys==2', {
        'use_official_google_api_keys%':
            '<!(<(PYTHON) <(DEPTH)/google_apis/build/check_internal.py <(DEPTH)/google_apis/internal/google_chrome_api_keys.h)',
      }],
      ['os_posix==1 and OS!="mac" and OS!="ios"', {
        # Figure out the python architecture to decide if we build pyauto.
	# disabled for mozilla because windows != mac and this runs a shell script
	#        'python_arch%': '<!(<(DEPTH)/build/linux/python_arch.sh <(sysroot)/usr/<(system_libdir)/libpython<(python_ver).so.1.0)',
        'conditions': [
          # TODO(glider): set clang to 1 earlier for ASan and TSan builds so
          # that it takes effect here.
          # disabled for Mozilla since it doesn't use this, and 'msys' messes $(CXX) up
          ['build_with_mozilla==0 and clang==0 and asan==0 and tsan==0', {
            # This will set gcc_version to XY if you are running gcc X.Y.*.
            'gcc_version%': '<!(<(PYTHON) <(DEPTH)/build/compiler_version.py)',
          }, {
            'gcc_version%': 0,
          }],
          ['branding=="Chrome"', {
            'linux_breakpad%': 1,
          }],
          # All Chrome builds have breakpad symbols, but only process the
          # symbols from official builds.
          ['(branding=="Chrome" and buildtype=="Official")', {
            'linux_dump_symbols%': 1,
          }],
        ],
      }],  # os_posix==1 and OS!="mac" and OS!="ios"
      ['OS=="ios"', {
        'disable_nacl%': 1,
        'enable_gpu%': 0,
        'icu_use_data_file_flag%': 1,
        'use_system_bzip2%': 1,
        'use_system_libxml%': 1,
        'use_system_sqlite%': 1,

        # The Mac SDK is set for iOS builds and passed through to Mac
        # sub-builds. This allows the Mac sub-build SDK in an iOS build to be
        # overridden from the command line the same way it is for a Mac build.
        'mac_sdk%': '',

        # iOS SDK and deployment target support.  The iOS 5.0 SDK is actually
        # what is required, but the value is left blank so when it is set in
        # the project files it will be the "current" iOS SDK.  Forcing 5.0
        # even though it is "current" causes Xcode to spit out a warning for
        # every single project file for not using the "current" SDK.
        'ios_sdk%': '',
        'ios_sdk_path%': '',
        'ios_deployment_target%': '4.3',

        'conditions': [
          # ios_product_name is set to the name of the .app bundle as it should
          # appear on disk.
          ['branding=="Chrome"', {
            'ios_product_name%': 'Chrome',
          }, { # else: branding!="Chrome"
            'ios_product_name%': 'Chromium',
          }],
          ['branding=="Chrome" and buildtype=="Official"', {
            'ios_breakpad%': 1,
          }, { # else: branding!="Chrome" or buildtype!="Official"
            'ios_breakpad%': 0,
          }],
        ],
      }],  # OS=="ios"
      ['OS=="android"', {
        # Provides an absolute path to PRODUCT_DIR (e.g. out/Release). Used
        # to specify the output directory for Ant in the Android build.
        'ant_build_out': '`cd <(PRODUCT_DIR) && pwd -P`',

        # Uses Android's crash report system
        'linux_breakpad%': 0,

        # Always uses openssl.
        'use_openssl%': 1,

        'proprietary_codecs%': '<(proprietary_codecs)',
        'enable_task_manager%': 0,
        'safe_browsing%': 0,
        'configuration_policy%': 0,
        'input_speech%': 0,
        'enable_web_intents%': 0,
        'enable_automation%': 0,
        'java_bridge%': 1,
        'build_ffmpegsumo%': 0,
        'linux_use_tcmalloc%': 0,

        # Disable Native Client.
        'disable_nacl%': 1,

        # Android does not support background apps.
        'enable_background%': 0,

        # Sessions are store separately in the Java side.
        'enable_session_service%': 0,

        # Set to 1 once we have a notification system for Android.
        # http://crbug.com/115320
        'notifications%': 0,

        'p2p_apis%' : 0,

        # TODO(jrg): when 'gtest_target_type'=='shared_library' and
        # OS==android, make all gtest_targets depend on
        # testing/android/native_test.gyp:native_test_apk.
        'gtest_target_type%': 'shared_library',

        # Uses system APIs for decoding audio and video.
        'use_libffmpeg%': '0',

        # Always use the chromium skia. The use_system_harfbuzz needs to
        # match use_system_skia.
        'use_system_skia%': '0',
        'use_system_harfbuzz%': '0',

        # Configure crash reporting and build options based on release type.
        'conditions': [
          ['buildtype=="Official"', {
            # Only report crash dumps for Official builds.
            'linux_breakpad%': 1,
          }, {
            'linux_breakpad%': 0,
          }],
        ],

        # When building as part of the Android system, use system libraries
        # where possible to reduce ROM size.
        # TODO(steveblock): Investigate using the system version of sqlite.
        'use_system_sqlite%': 0,  # '<(android_build_type)',
        'use_system_expat%': '<(android_build_type)',
        'use_system_icu%': '<(android_build_type)',
        'use_system_stlport%': '<(android_build_type)',

        # Copy it out one scope.
        'android_build_type%': '<(android_build_type)',
      }],  # OS=="android"
      ['OS=="mac"', {
        'variables': {
          # Mac OS X SDK and deployment target support.  The SDK identifies
          # the version of the system headers that will be used, and
          # corresponds to the MAC_OS_X_VERSION_MAX_ALLOWED compile-time
          # macro.  "Maximum allowed" refers to the operating system version
          # whose APIs are available in the headers.  The deployment target
          # identifies the minimum system version that the built products are
          # expected to function on.  It corresponds to the
          # MAC_OS_X_VERSION_MIN_REQUIRED compile-time macro.  To ensure these
          # macros are available, #include <AvailabilityMacros.h>.  Additional
          # documentation on these macros is available at
          # http://developer.apple.com/mac/library/technotes/tn2002/tn2064.html#SECTION3
          # Chrome normally builds with the Mac OS X 10.6 SDK and sets the
          # deployment target to 10.6.  Other projects, such as O3D, may
          # override these defaults.

          # Normally, mac_sdk_min is used to find an SDK that Xcode knows
          # about that is at least the specified version. In official builds,
          # the SDK must match mac_sdk_min exactly. If the SDK is installed
          # someplace that Xcode doesn't know about, set mac_sdk_path to the
          # path to the SDK; when set to a non-empty string, SDK detection
          # based on mac_sdk_min will be bypassed entirely.
          'mac_sdk_min%': '10.6',
          'mac_sdk_path%': '',

          'mac_deployment_target%': '10.6',
        },

        'mac_sdk_min': '<(mac_sdk_min)',
        'mac_sdk_path': '<(mac_sdk_path)',
        'mac_deployment_target': '<(mac_deployment_target)',

        # Enable clang on mac by default!
        'clang%': 1,

        # Compile in Breakpad support by default so that it can be
        # tested, even if it is not enabled by default at runtime.
        'mac_breakpad_compiled_in%': 1,
        'conditions': [
          # mac_product_name is set to the name of the .app bundle as it should
          # appear on disk.  This duplicates data from
          # chrome/app/theme/chromium/BRANDING and
          # chrome/app/theme/google_chrome/BRANDING, but is necessary to get
          # these names into the build system.
          ['branding=="Chrome"', {
            'mac_product_name%': 'Google Chrome',
          }, { # else: branding!="Chrome"
            'mac_product_name%': 'Chromium',
          }],

          ['branding=="Chrome" and buildtype=="Official"', {
            'mac_sdk%': '<!(<(PYTHON) <(DEPTH)/build/mac/find_sdk.py --verify <(mac_sdk_min) --sdk_path=<(mac_sdk_path))',
            # Enable uploading crash dumps.
            'mac_breakpad_uploads%': 1,
            # Enable dumping symbols at build time for use by Mac Breakpad.
            'mac_breakpad%': 1,
            # Enable Keystone auto-update support.
            'mac_keystone%': 1,
          }, { # else: branding!="Chrome" or buildtype!="Official"
            'mac_sdk%': '', #'<!(<(PYTHON) <(DEPTH)/build/mac/find_sdk.py <(mac_sdk_min))',
            'mac_breakpad_uploads%': 0,
            'mac_breakpad%': 0,
            'mac_keystone%': 0,
          }],
        ],
      }],  # OS=="mac"

      ['OS=="win"', {
        'conditions': [
          ['component=="shared_library"', {
            'win_use_allocator_shim%': 0,
          }],
          ['component=="shared_library" and "<(GENERATOR)"=="ninja"', {
            # Only enabled by default for ninja because it's buggy in VS.
            # Not enabled for component=static_library because some targets
            # are too large and the toolchain fails due to the size of the
            # .obj files.
            'incremental_chrome_dll%': 1,
          }],
          # Don't do incremental linking for large modules on 32-bit.
          ['MSVS_OS_BITS==32', {
            'msvs_large_module_debug_link_mode%': '1',  # No
          },{
            'msvs_large_module_debug_link_mode%': '2',  # Yes
          }],
          ['MSVS_VERSION=="2010e" or MSVS_VERSION=="2008e" or MSVS_VERSION=="2005e"', {
            'msvs_express%': 1,
            'secure_atl%': 0,
          },{
            'msvs_express%': 0,
            'secure_atl%': 1,
          }],
        ],
        'nacl_win64_defines': [
          # This flag is used to minimize dependencies when building
          # Native Client loader for 64-bit Windows.
          'NACL_WIN64',
        ],
      }],

      ['os_posix==1 and chromeos==0 and OS!="android"', {
        'use_cups%': 1,
      }, {
        'use_cups%': 0,
      }],

      # Native Client glibc toolchain is enabled by default except on arm.
      ['target_arch=="arm"', {
        'disable_glibc%': 1,
      }, {
        'disable_glibc%': 0,
      }],

      # Disable SSE2 when building for ARM or MIPS.
      ['target_arch=="arm" or target_arch=="mipsel"', {
        'disable_sse2%': 1,
      }, {
        'disable_sse2%': '<(disable_sse2)',
      }],

      # Set the relative path from this file to the GYP file of the JPEG
      # library used by Chromium.
      ['use_system_libjpeg==1 or use_libjpeg_turbo==0', {
        # Configuration for using the system libjeg is here.
        'libjpeg_gyp_path': '../third_party/libjpeg/libjpeg.gyp',
      }, {
        'libjpeg_gyp_path': '../third_party/libjpeg_turbo/libjpeg.gyp',
      }],

      # Options controlling the use of GConf (the classic GNOME configuration
      # system) and GIO, which contains GSettings (the new GNOME config system).
      ['chromeos==1', {
        'use_gconf%': 0,
        'use_gio%': 0,
      }, {
        'use_gconf%': 1,
        'use_gio%': 1,
      }],

      # Set up -D and -E flags passed into grit.
      ['branding=="Chrome"', {
        # TODO(mmoss) The .grd files look for _google_chrome, but for
        # consistency they should look for google_chrome_build like C++.
        'grit_defines': ['-D', '_google_chrome',
                         '-E', 'CHROMIUM_BUILD=google_chrome'],
      }, {
        'grit_defines': ['-D', '_chromium',
                         '-E', 'CHROMIUM_BUILD=chromium'],
      }],
      ['chromeos==1', {
        'grit_defines': ['-D', 'chromeos', '-D', 'scale_factors=2x'],
      }],
      ['toolkit_views==1', {
        'grit_defines': ['-D', 'toolkit_views'],
      }],
      ['use_aura==1', {
        'grit_defines': ['-D', 'use_aura'],
      }],
      ['use_ash==1', {
        'grit_defines': ['-D', 'use_ash'],
      }],
      ['use_nss==1', {
        'grit_defines': ['-D', 'use_nss'],
      }],
      ['file_manager_extension==1', {
        'grit_defines': ['-D', 'file_manager_extension'],
      }],
      ['remoting==1', {
        'grit_defines': ['-D', 'remoting'],
      }],
      ['use_titlecase_in_grd_files==1', {
        'grit_defines': ['-D', 'use_titlecase'],
      }],
      ['use_third_party_translations==1', {
        'grit_defines': ['-D', 'use_third_party_translations'],
        'locales': [
          'ast', 'bs', 'ca@valencia', 'en-AU', 'eo', 'eu', 'gl', 'hy', 'ia',
          'ka', 'ku', 'kw', 'ms', 'ug'
        ],
      }],
      ['OS=="android"', {
        'grit_defines': ['-D', 'android'],
      }],
      ['OS=="mac"', {
        'grit_defines': ['-D', 'scale_factors=2x'],
      }],
      ['OS == "ios"', {
        'grit_defines': [
          # define for iOS specific resources.
          '-D', 'ios',
          # iOS uses a whitelist to filter resources.
          '-w', '<(DEPTH)/build/ios/grit_whitelist.txt'
        ],
      }],
      ['enable_extensions==1', {
        'grit_defines': ['-D', 'enable_extensions'],
      }],
      ['enable_printing==1', {
        'grit_defines': ['-D', 'enable_printing'],
      }],
      ['enable_themes==1', {
        'grit_defines': ['-D', 'enable_themes'],
      }],
      ['use_oem_wallpaper==1', {
        'grit_defines': ['-D', 'use_oem_wallpaper'],
      }],
      ['clang_use_chrome_plugins==1 and OS!="win"', {
        'clang_chrome_plugins_flags': [
          '<!@(<(DEPTH)/tools/clang/scripts/plugin_flags.sh)'
        ],
      }],

      ['enable_web_intents_tag==1', {
        'grit_defines': ['-D', 'enable_web_intents_tag'],
      }],

      ['asan==1', {
        'clang%': 1,
      }],
      ['asan==1 and OS=="mac"', {
        # See http://crbug.com/145503.
        'component': "static_library",
      }],
      ['tsan==1', {
        'clang%': 1,
      }],

      ['OS=="linux" and clang_type_profiler==1', {
        'clang%': 1,
        'clang_use_chrome_plugins%': 0,
        'make_clang_dir%': 'third_party/llvm-allocated-type/Linux_x64',
      }],

      # On valgrind bots, override the optimizer settings so we don't inline too
      # much and make the stacks harder to figure out.
      #
      # TODO(rnk): Kill off variables that no one else uses and just implement
      # them under a build_for_tool== condition.
      ['build_for_tool=="memcheck" or build_for_tool=="tsan"', {
        # gcc flags
        'mac_debug_optimization': '1',
        'mac_release_optimization': '1',
        'release_optimize': '1',
        'no_gc_sections': 1,
        'debug_extra_cflags': '-g -fno-inline -fno-omit-frame-pointer '
                              '-fno-builtin -fno-optimize-sibling-calls',
        'release_extra_cflags': '-g -fno-inline -fno-omit-frame-pointer '
                                '-fno-builtin -fno-optimize-sibling-calls',

        # MSVS flags for TSan on Pin and Windows.
        'win_debug_RuntimeChecks': '0',
        'win_debug_disable_iterator_debugging': '1',
        'win_debug_Optimization': '1',
        'win_debug_InlineFunctionExpansion': '0',
        'win_release_InlineFunctionExpansion': '0',
        'win_release_OmitFramePointers': '0',

        'linux_use_tcmalloc': 1,
        'release_valgrind_build': 1,
        'werror': '',
        'component': 'static_library',
        'use_system_zlib': 0,
      }],

      # Build tweaks for DrMemory.
      # TODO(rnk): Combine with tsan config to share the builder.
      # http://crbug.com/108155
      ['build_for_tool=="drmemory"', {
        # These runtime checks force initialization of stack vars which blocks
        # DrMemory's uninit detection.
        'win_debug_RuntimeChecks': '0',
        # Iterator debugging is slow.
        'win_debug_disable_iterator_debugging': '1',
        # Try to disable optimizations that mess up stacks in a release build.
        'win_release_InlineFunctionExpansion': '0',
        'win_release_OmitFramePointers': '0',
        # Ditto for debug, to support bumping win_debug_Optimization.
        'win_debug_InlineFunctionExpansion': 0,
        'win_debug_OmitFramePointers': 0,
        # Keep the code under #ifndef NVALGRIND.
        'release_valgrind_build': 1,
      }],
    ],

    # List of default apps to install in new profiles.  The first list contains
    # the source files as found in svn.  The second list, used only for linux,
    # contains the destination location for each of the files.  When a crx
    # is added or removed from the list, the chrome/browser/resources/
    # default_apps/external_extensions.json file must also be updated.
    'default_apps_list': [
      'browser/resources/default_apps/external_extensions.json',
      'browser/resources/default_apps/gmail.crx',
      'browser/resources/default_apps/search.crx',
      'browser/resources/default_apps/youtube.crx',
      'browser/resources/default_apps/drive.crx',
      'browser/resources/default_apps/docs.crx',
    ],
    'default_apps_list_linux_dest': [
      '<(PRODUCT_DIR)/default_apps/external_extensions.json',
      '<(PRODUCT_DIR)/default_apps/gmail.crx',
      '<(PRODUCT_DIR)/default_apps/search.crx',
      '<(PRODUCT_DIR)/default_apps/youtube.crx',
      '<(PRODUCT_DIR)/default_apps/drive.crx',
      '<(PRODUCT_DIR)/default_apps/docs.crx',
    ],
  },
  'target_defaults': {
    'variables': {
      # The condition that operates on chromium_code is in a target_conditions
      # section, and will not have access to the default fallback value of
      # chromium_code at the top of this file, or to the chromium_code
      # variable placed at the root variables scope of .gyp files, because
      # those variables are not set at target scope.  As a workaround,
      # if chromium_code is not set at target scope, define it in target scope
      # to contain whatever value it has during early variable expansion.
      # That's enough to make it available during target conditional
      # processing.
      'chromium_code%': '<(chromium_code)',

      # See http://msdn.microsoft.com/en-us/library/aa652360(VS.71).aspx
      'win_release_Optimization%': '2', # 2 = /Os
      'win_debug_Optimization%': '0',   # 0 = /Od

      # See http://msdn.microsoft.com/en-us/library/2kxx5t2c(v=vs.80).aspx
      # Tri-state: blank is default, 1 on, 0 off
      'win_release_OmitFramePointers%': '0',
      # Tri-state: blank is default, 1 on, 0 off
      'win_debug_OmitFramePointers%': '',

      # See http://msdn.microsoft.com/en-us/library/8wtf2dfz(VS.71).aspx
      'win_debug_RuntimeChecks%': '3',    # 3 = all checks enabled, 0 = off

      # See http://msdn.microsoft.com/en-us/library/47238hez(VS.71).aspx
      'win_debug_InlineFunctionExpansion%': '',    # empty = default, 0 = off,
      'win_release_InlineFunctionExpansion%': '2', # 1 = only __inline, 2 = max

      # VS inserts quite a lot of extra checks to algorithms like
      # std::partial_sort in Debug build which make them O(N^2)
      # instead of O(N*logN). This is particularly slow under memory
      # tools like ThreadSanitizer so we want it to be disablable.
      # See http://msdn.microsoft.com/en-us/library/aa985982(v=VS.80).aspx
      'win_debug_disable_iterator_debugging%': '0',

      'release_extra_cflags%': '',
      'debug_extra_cflags%': '',

      'release_valgrind_build%': '<(release_valgrind_build)',

      # the non-qualified versions are widely assumed to be *nix-only
      'win_release_extra_cflags%': '',
      'win_debug_extra_cflags%': '',

      # TODO(thakis): Make this a blacklist instead, http://crbug.com/101600
      'enable_wexit_time_destructors%': '<(enable_wexit_time_destructors)',

      # Only used by Windows build for now.  Can be used to build into a
      # differet output directory, e.g., a build_dir_prefix of VS2010_ would
      # output files in src/build/VS2010_{Debug,Release}.
      'build_dir_prefix%': '',

      # Targets are by default not nacl untrusted code.
      'nacl_untrusted_build%': 0,

      'conditions': [
        ['OS=="win" and component=="shared_library"', {
          # See http://msdn.microsoft.com/en-us/library/aa652367.aspx
          'win_release_RuntimeLibrary%': '2', # 2 = /MD (nondebug DLL)
          'win_debug_RuntimeLibrary%': '3',   # 3 = /MDd (debug DLL)
        }, {
          # See http://msdn.microsoft.com/en-us/library/aa652367.aspx
          'win_release_RuntimeLibrary%': '0', # 0 = /MT (nondebug static)
          'win_debug_RuntimeLibrary%': '1',   # 1 = /MTd (debug static)
        }],
        ['OS=="ios"', {
          # See http://gcc.gnu.org/onlinedocs/gcc-4.4.2/gcc/Optimize-Options.html
          'mac_release_optimization%': 's', # Use -Os unless overridden
          'mac_debug_optimization%': '0',   # Use -O0 unless overridden
        }, {
          # See http://gcc.gnu.org/onlinedocs/gcc-4.4.2/gcc/Optimize-Options.html
          'mac_release_optimization%': '3', # Use -O3 unless overridden
          'mac_debug_optimization%': '0',   # Use -O0 unless overridden
        }],
      ],
    },
    'conditions': [
      ['OS=="linux" and linux_use_tcmalloc==1 and clang_type_profiler==1', {
        'cflags_cc!': ['-fno-rtti'],
        'cflags_cc+': [
          '-frtti',
          '-gline-tables-only',
          '-fintercept-allocation-functions',
        ],
        'defines': ['TYPE_PROFILING'],
        'dependencies': [
          '<(DEPTH)/base/allocator/allocator.gyp:type_profiler',
        ],
      }],
      ['OS=="win" and "<(msbuild_toolset)"!=""', {
        'msbuild_toolset': '<(msbuild_toolset)',
      }],
      ['branding=="Chrome"', {
        'defines': ['GOOGLE_CHROME_BUILD'],
      }, {  # else: branding!="Chrome"
        'defines': ['CHROMIUM_BUILD'],
      }],
      ['OS=="mac" and component=="shared_library"', {
        'xcode_settings': {
          'DYLIB_INSTALL_NAME_BASE': '@rpath',
          'LD_RUNPATH_SEARCH_PATHS': [
            # For unbundled binaries.
            '@loader_path/.',
            # For bundled binaries, to get back from Binary.app/Contents/MacOS.
            '@loader_path/../../..',
          ],
        },
      }],
      ['branding=="Chrome" and (OS=="win" or OS=="mac")', {
        'defines': ['ENABLE_RLZ'],
      }],
      ['component=="shared_library"', {
        'defines': ['COMPONENT_BUILD'],
      }],
      ['toolkit_views==1', {
        'defines': ['TOOLKIT_VIEWS=1'],
      }],
      ['ui_compositor_image_transport==1', {
        'defines': ['UI_COMPOSITOR_IMAGE_TRANSPORT'],
      }],
      ['use_aura==1', {
        'defines': ['USE_AURA=1'],
      }],
      ['use_ash==1', {
        'defines': ['USE_ASH=1'],
      }],
      ['use_libjpeg_turbo==1', {
        'defines': ['USE_LIBJPEG_TURBO=1'],
      }],
      ['use_nss==1', {
        'defines': ['USE_NSS=1'],
      }],
      ['enable_one_click_signin==1', {
        'defines': ['ENABLE_ONE_CLICK_SIGNIN'],
      }],
      ['toolkit_uses_gtk==1 and toolkit_views==0', {
        # TODO(erg): We are progressively sealing up use of deprecated features
        # in gtk in preparation for an eventual porting to gtk3.
        'defines': ['GTK_DISABLE_SINGLE_INCLUDES=1'],
      }],
      ['chromeos==1', {
        'defines': ['OS_CHROMEOS=1'],
      }],
      ['use_xi2_mt!=0', {
        'defines': ['USE_XI2_MT=<(use_xi2_mt)'],
      }],
      ['file_manager_extension==1', {
        'defines': ['FILE_MANAGER_EXTENSION=1'],
      }],
      ['profiling==1', {
        'defines': ['ENABLE_PROFILING=1'],
      }],
      ['OS=="linux" and glibcxx_debug==1', {
        'defines': ['_GLIBCXX_DEBUG=1',],
        'cflags_cc!': ['-fno-rtti'],
        'cflags_cc+': ['-frtti', '-g'],
      }],
      ['OS=="linux"', {
        # we need lrint(), which is ISOC99, and Xcode
	# already forces -std=c99 for mac below
        'defines': ['_ISOC99_SOURCE=1'],
      }],
      ['remoting==1', {
        'defines': ['ENABLE_REMOTING=1'],
      }],
      ['enable_webrtc==1', {
        'defines': ['ENABLE_WEBRTC=1'],
      }],
      ['proprietary_codecs==1', {
        'defines': ['USE_PROPRIETARY_CODECS'],
      }],
      ['enable_pepper_threading==1', {
        'defines': ['ENABLE_PEPPER_THREADING'],
      }],
      ['enable_viewport==1', {
        'defines': ['ENABLE_VIEWPORT'],
      }],
      ['configuration_policy==1', {
        'defines': ['ENABLE_CONFIGURATION_POLICY'],
      }],
      ['input_speech==1', {
        'defines': ['ENABLE_INPUT_SPEECH'],
      }],
      ['notifications==1', {
        'defines': ['ENABLE_NOTIFICATIONS'],
      }],
      ['enable_hidpi==1', {
        'defines': ['ENABLE_HIDPI=1'],
      }],
      ['fastbuild!=0', {

        'conditions': [
          # For Windows and Mac, we don't genererate debug information.
          ['OS=="win" or OS=="mac"', {
            'msvs_settings': {
              'VCLinkerTool': {
                'GenerateDebugInformation': 'false',
              },
              'VCCLCompilerTool': {
                'DebugInformationFormat': '0',
              }
            },
            'xcode_settings': {
              'GCC_GENERATE_DEBUGGING_SYMBOLS': 'NO',
            },
          }, { # else: OS != "win", generate less debug information.
            'variables': {
              'debug_extra_cflags': '-g1',
            },
          }],
          # Clang creates chubby debug information, which makes linking very
          # slow. For now, don't create debug information with clang.  See
          # http://crbug.com/70000
          ['(OS=="linux" or OS=="android") and clang==1', {
            'variables': {
              'debug_extra_cflags': '-g0',
            },
          }],
        ],  # conditions for fastbuild.
      }],  # fastbuild!=0
      ['dcheck_always_on!=0', {
        'defines': ['DCHECK_ALWAYS_ON=1'],
      }],  # dcheck_always_on!=0
      ['selinux==1', {
        'defines': ['CHROMIUM_SELINUX=1'],
      }],
      ['win_use_allocator_shim==0', {
        'conditions': [
          ['OS=="win"', {
            'defines': ['NO_TCMALLOC'],
          }],
        ],
      }],
      ['enable_gpu==1', {
        'defines': [
          'ENABLE_GPU=1',
        ],
      }],
      ['use_openssl==1', {
        'defines': [
          'USE_OPENSSL=1',
        ],
      }],
      ['enable_eglimage==1', {
        'defines': [
          'ENABLE_EGLIMAGE=1',
        ],
      }],
      ['use_skia==1', {
        'defines': [
          'USE_SKIA=1',
        ],
      }],
      ['coverage!=0', {
        'conditions': [
          ['OS=="mac" or OS=="ios"', {
            'xcode_settings': {
              'GCC_INSTRUMENT_PROGRAM_FLOW_ARCS': 'YES',  # -fprofile-arcs
              'GCC_GENERATE_TEST_COVERAGE_FILES': 'YES',  # -ftest-coverage
            },
          }],
          ['OS=="mac"', {
            # Add -lgcov for types executable, shared_library, and
            # loadable_module; not for static_library.
            # This is a delayed conditional.
            'target_conditions': [
              ['_type!="static_library"', {
                'xcode_settings': { 'OTHER_LDFLAGS': [ '-lgcov' ] },
              }],
            ],
          }],
          ['OS=="linux" or OS=="android"', {
            'cflags': [ '-ftest-coverage',
                        '-fprofile-arcs' ],
            'link_settings': { 'libraries': [ '-lgcov' ] },
          }],
          # Finally, for Windows, we simply turn on profiling.
          ['OS=="win"', {
            'msvs_settings': {
              'VCLinkerTool': {
                'Profile': 'true',
              },
              'VCCLCompilerTool': {
                # /Z7, not /Zi, so coverage is happyb
                'DebugInformationFormat': '1',
                'AdditionalOptions': ['/Yd'],
              }
            }
         }],  # OS==win
        ],  # conditions for coverage
      }],  # coverage!=0
      ['OS=="win"', {
        'defines': [
          '__STD_C',
          '_CRT_SECURE_NO_DEPRECATE',
          '_SCL_SECURE_NO_DEPRECATE',
        ],
        'include_dirs': [
          '<(DEPTH)/third_party/wtl/include',
        ],
        'conditions': [
          ['win_z7!=0', {
            'msvs_settings': {
              # Generates debug info when win_z7=1
              # even if fastbuild=1 (that makes GenerateDebugInformation false).
              'VCLinkerTool': {
                'GenerateDebugInformation': 'true',
              },
              'VCCLCompilerTool': {
                'DebugInformationFormat': '1',
              }
            }
          }],
        ],  # win_z7!=0
      }],  # OS==win
      ['enable_task_manager==1', {
        'defines': [
          'ENABLE_TASK_MANAGER=1',
        ],
      }],
      ['enable_web_intents==1', {
        'defines': [
          'ENABLE_WEB_INTENTS=1',
        ],
      }],
      ['enable_extensions==1', {
        'defines': [
          'ENABLE_EXTENSIONS=1',
        ],
      }],
      ['OS=="win" and branding=="Chrome"', {
        'defines': ['ENABLE_SWIFTSHADER'],
      }],
      ['enable_dart==1', {
        'defines': ['WEBKIT_USING_DART=1'],
      }],
      ['enable_plugin_installation==1', {
        'defines': ['ENABLE_PLUGIN_INSTALLATION=1'],
      }],
      ['enable_protector_service==1', {
        'defines': ['ENABLE_PROTECTOR_SERVICE=1'],
      }],
      ['enable_session_service==1', {
        'defines': ['ENABLE_SESSION_SERVICE=1'],
      }],
      ['enable_themes==1', {
        'defines': ['ENABLE_THEMES=1'],
      }],
      ['enable_background==1', {
        'defines': ['ENABLE_BACKGROUND=1'],
      }],
      ['enable_automation==1', {
        'defines': ['ENABLE_AUTOMATION=1'],
      }],
      ['enable_printing==1', {
        'defines': ['ENABLE_PRINTING=1'],
      }],
      ['enable_captive_portal_detection==1', {
        'defines': ['ENABLE_CAPTIVE_PORTAL_DETECTION=1'],
      }],
      ['disable_ftp_support==1', {
        'defines': ['DISABLE_FTP_SUPPORT=1'],
      }],
    ],  # conditions for 'target_defaults'
    'target_conditions': [
      ['enable_wexit_time_destructors==1', {
        'conditions': [
          [ 'clang==1', {
            'cflags': [
              '-Wexit-time-destructors',
            ],
            'xcode_settings': {
              'WARNING_CFLAGS': [
                '-Wexit-time-destructors',
              ],
            },
          }],
        ],
      }],
      ['chromium_code==0', {
        'conditions': [
          [ 'os_posix==1 and OS!="mac" and OS!="ios"', {
            # We don't want to get warnings from third-party code,
            # so remove any existing warning-enabling flags like -Wall.
            'cflags!': [
              '-Wall',
              '-Wextra',
            ],
            'cflags_cc': [
              # Don't warn about hash_map in third-party code.
              '-Wno-deprecated',
            ],
            'cflags': [
              # Don't warn about printf format problems.
              # This is off by default in gcc but on in Ubuntu's gcc(!).
              '-Wno-format',
            ],
            'cflags_cc!': [
              # TODO(fischman): remove this.
              # http://code.google.com/p/chromium/issues/detail?id=90453
              '-Wsign-compare',
            ]
          }],
          # TODO: Fix all warnings on chromeos too.
          [ 'os_posix==1 and OS!="mac" and OS!="ios" and (clang!=1 or chromeos==1)', {
            'cflags!': [
              '-Werror',
            ],
          }],
          [ 'os_posix==1 and os_bsd!=1 and OS!="mac" and OS!="android"', {
            'cflags': [
              # Don't warn about ignoring the return value from e.g. close().
              # This is off by default in some gccs but on by default in others.
              # BSD systems do not support this option, since they are usually
              # using gcc 4.2.1, which does not have this flag yet.
              '-Wno-unused-result',
            ],
          }],
          [ 'OS=="win"', {
            'defines': [
              '_CRT_SECURE_NO_DEPRECATE',
              '_CRT_NONSTDC_NO_WARNINGS',
              '_CRT_NONSTDC_NO_DEPRECATE',
              '_SCL_SECURE_NO_DEPRECATE',
            ],
            'msvs_disabled_warnings': [4800],
            'msvs_settings': {
              'VCCLCompilerTool': {
                'WarningLevel': '3',
                'WarnAsError': '<(win_third_party_warn_as_error)',
                'Detect64BitPortabilityProblems': 'false',
              },
            },
            'conditions': [
              ['buildtype=="Official"', {
                'msvs_settings': {
                  'VCCLCompilerTool': { 'WarnAsError': 'false' },
                }
              }],
            ],
          }],
          # TODO(darin): Unfortunately, some third_party code depends on base/
          [ 'OS=="win" and component=="shared_library"', {
            'msvs_disabled_warnings': [
              4251,  # class 'std::xx' needs to have dll-interface.
            ],
          }],
          [ 'OS=="mac" or OS=="ios"', {
            'xcode_settings': {
              'WARNING_CFLAGS!': ['-Wall', '-Wextra'],
            },
            'conditions': [
              ['buildtype=="Official"', {
                'xcode_settings': {
                  'GCC_TREAT_WARNINGS_AS_ERRORS': 'NO',    # -Werror
                },
              }],
            ],
          }],
          [ 'OS=="ios"', {
            'xcode_settings': {
              # TODO(ios): Fix remaining warnings in third-party code, then
              # remove this; the Mac cleanup didn't get everything that's
              # flagged in an iOS build.
              'GCC_TREAT_WARNINGS_AS_ERRORS': 'NO',
              'RUN_CLANG_STATIC_ANALYZER': 'NO',
            },
          }],
        ],
      }, {
        'includes': [
           # Rules for excluding e.g. foo_win.cc from the build on non-Windows.
          'filename_rules.gypi',
        ],
        # In Chromium code, we define __STDC_FORMAT_MACROS in order to get the
        # C99 macros on Mac and Linux.
        'defines': [
          '__STDC_FORMAT_MACROS',
        ],
        'conditions': [
          ['OS=="win"', {
            # turn on warnings for signed/unsigned mismatch on chromium code.
            'msvs_settings': {
              'VCCLCompilerTool': {
                'AdditionalOptions': ['/we4389'],
              },
            },
          }],
          ['OS=="win" and component=="shared_library"', {
            'msvs_disabled_warnings': [
              4251,  # class 'std::xx' needs to have dll-interface.
            ],
          }],
        ],
      }],
    ],  # target_conditions for 'target_defaults'
    'default_configuration': 'Debug',
    'configurations': {
      # VCLinkerTool LinkIncremental values below:
      #   0 == default
      #   1 == /INCREMENTAL:NO
      #   2 == /INCREMENTAL
      # Debug links incremental, Release does not.
      #
      # Abstract base configurations to cover common attributes.
      #
      'Common_Base': {
        'abstract': 1,
        'msvs_configuration_attributes': {
          'OutputDirectory': '<(DEPTH)\\build\\<(build_dir_prefix)$(ConfigurationName)',
          'IntermediateDirectory': '$(OutDir)\\obj\\$(ProjectName)',
          'CharacterSet': '1',
        },
      },
      'x86_Base': {
        'abstract': 1,
        'msvs_settings': {
          'VCLinkerTool': {
            'TargetMachine': '1',
          },
        },
        'msvs_configuration_platform': 'Win32',
      },
      'x64_Base': {
        'abstract': 1,
        'msvs_configuration_platform': 'x64',
        'msvs_settings': {
          'VCLinkerTool': {
            'TargetMachine': '17', # x86 - 64
            'AdditionalLibraryDirectories!':
              ['<(windows_sdk_path)/Lib/win8/um/x86'],
            'AdditionalLibraryDirectories':
              ['<(windows_sdk_path)/Lib/win8/um/x64'],
          },
          'VCLibrarianTool': {
            'AdditionalLibraryDirectories!':
              ['<(windows_sdk_path)/Lib/win8/um/x86'],
            'AdditionalLibraryDirectories':
              ['<(windows_sdk_path)/Lib/win8/um/x64'],
          },
        },
        'defines': [
          # Not sure if tcmalloc works on 64-bit Windows.
          'NO_TCMALLOC',
        ],
      },
      'Debug_Base': {
        'abstract': 1,
        'defines': [
          'DYNAMIC_ANNOTATIONS_ENABLED=1',
          'WTF_USE_DYNAMIC_ANNOTATIONS=1',
        ],
        'xcode_settings': {
          'COPY_PHASE_STRIP': 'NO',
          'GCC_OPTIMIZATION_LEVEL': '<(mac_debug_optimization)',
          'OTHER_CFLAGS': [
            '<@(debug_extra_cflags)',
          ],
        },
        'msvs_settings': {
          'VCCLCompilerTool': {
            'Optimization': '<(win_debug_Optimization)',
            'PreprocessorDefinitions': ['_DEBUG'],
            'BasicRuntimeChecks': '<(win_debug_RuntimeChecks)',
            'RuntimeLibrary': '<(win_debug_RuntimeLibrary)',
            'conditions': [
              # According to MSVS, InlineFunctionExpansion=0 means
              # "default inlining", not "/Ob0".
              # Thus, we have to handle InlineFunctionExpansion==0 separately.
              ['win_debug_InlineFunctionExpansion==0', {
                'AdditionalOptions': ['/Ob0'],
              }],
              ['win_debug_InlineFunctionExpansion!=""', {
                'InlineFunctionExpansion':
                  '<(win_debug_InlineFunctionExpansion)',
              }],
              ['win_debug_disable_iterator_debugging==1', {
                'PreprocessorDefinitions': ['_HAS_ITERATOR_DEBUGGING=0'],
              }],

              # if win_debug_OmitFramePointers is blank, leave as default
              ['win_debug_OmitFramePointers==1', {
                'OmitFramePointers': 'true',
              }],
              ['win_debug_OmitFramePointers==0', {
                'OmitFramePointers': 'false',
                # The above is not sufficient (http://crbug.com/106711): it
                # simply eliminates an explicit "/Oy", but both /O2 and /Ox
                # perform FPO regardless, so we must explicitly disable.
                # We still want the false setting above to avoid having
                # "/Oy /Oy-" and warnings about overriding.
                'AdditionalOptions': ['/Oy-'],
              }],
            ],
            'AdditionalOptions': [ '<@(win_debug_extra_cflags)', ],
          },
          'VCLinkerTool': {
            'LinkIncremental': '<(msvs_debug_link_incremental)',
            # ASLR makes debugging with windbg difficult because Chrome.exe and
            # Chrome.dll share the same base name. As result, windbg will
            # name the Chrome.dll module like chrome_<base address>, where
            # <base address> typically changes with each launch. This in turn
            # means that breakpoints in Chrome.dll don't stick from one launch
            # to the next. For this reason, we turn ASLR off in debug builds.
            # Note that this is a three-way bool, where 0 means to pick up
            # the default setting, 1 is off and 2 is on.
            'RandomizedBaseAddress': 1,
          },
          'VCResourceCompilerTool': {
            'PreprocessorDefinitions': ['_DEBUG'],
          },
        },
        'conditions': [
          ['OS=="linux" or OS=="android"', {
            'target_conditions': [
              ['_toolset=="target"', {
                'cflags': [
                  '<@(debug_extra_cflags)',
                ],
              }],
            ],
          }],
          # Disabled on iOS because it was causing a crash on startup.
          # TODO(michelea): investigate, create a reduced test and possibly
          # submit a radar.
          ['release_valgrind_build==0 and OS!="ios"', {
            'xcode_settings': {
              'OTHER_CFLAGS': [
                '-fstack-protector-all',  # Implies -fstack-protector
              ],
            },
          }],
        ],
      },
      'Release_Base': {
        'abstract': 1,
        'defines': [
          'NDEBUG',
        ],
        'xcode_settings': {
          'DEAD_CODE_STRIPPING': 'YES',  # -Wl,-dead_strip
          'GCC_OPTIMIZATION_LEVEL': '<(mac_release_optimization)',
          'OTHER_CFLAGS': [ '<@(release_extra_cflags)', ],
        },
        'msvs_settings': {
          'VCCLCompilerTool': {
            'RuntimeLibrary': '<(win_release_RuntimeLibrary)',
            'conditions': [
              # In official builds, each target will self-select
              # an optimization level.
              ['buildtype!="Official"', {
                  'Optimization': '<(win_release_Optimization)',
                },
              ],
              # According to MSVS, InlineFunctionExpansion=0 means
              # "default inlining", not "/Ob0".
              # Thus, we have to handle InlineFunctionExpansion==0 separately.
              ['win_release_InlineFunctionExpansion==0', {
                'AdditionalOptions': ['/Ob0'],
              }],
              ['win_release_InlineFunctionExpansion!=""', {
                'InlineFunctionExpansion':
                  '<(win_release_InlineFunctionExpansion)',
              }],

              # if win_release_OmitFramePointers is blank, leave as default
              ['win_release_OmitFramePointers==1', {
                'OmitFramePointers': 'true',
              }],
              ['win_release_OmitFramePointers==0', {
                'OmitFramePointers': 'false',
                # The above is not sufficient (http://crbug.com/106711): it
                # simply eliminates an explicit "/Oy", but both /O2 and /Ox
                # perform FPO regardless, so we must explicitly disable.
                # We still want the false setting above to avoid having
                # "/Oy /Oy-" and warnings about overriding.
                'AdditionalOptions': ['/Oy-'],
              }],
            ],
            'AdditionalOptions': [ '<@(win_release_extra_cflags)', ],
          },
          'VCLinkerTool': {
            # LinkIncremental is a tri-state boolean, where 0 means default
            # (i.e., inherit from parent solution), 1 means false, and
            # 2 means true.
            'LinkIncremental': '1',
            # This corresponds to the /PROFILE flag which ensures the PDB
            # file contains FIXUP information (growing the PDB file by about
            # 5%) but does not otherwise alter the output binary. This
            # information is used by the Syzygy optimization tool when
            # decomposing the release image.
            'Profile': 'true',
          },
        },
        'conditions': [
          ['msvs_use_common_release', {
            'includes': ['release.gypi'],
          }],
          ['release_valgrind_build==0', {
            'defines': [
              'NVALGRIND',
              'DYNAMIC_ANNOTATIONS_ENABLED=0',
            ],
          }, {
            'defines': [
              'DYNAMIC_ANNOTATIONS_ENABLED=1',
              'WTF_USE_DYNAMIC_ANNOTATIONS=1',
            ],
          }],
          ['win_use_allocator_shim==0', {
            'defines': ['NO_TCMALLOC'],
          }],
          ['OS=="linux"', {
            'target_conditions': [
              ['_toolset=="target"', {
                'cflags': [
                  '<@(release_extra_cflags)',
                ],
              }],
            ],
          }],
        ],
      },
      #
      # Concrete configurations
      #
      'Debug': {
        'inherit_from': ['Common_Base', 'x86_Base', 'Debug_Base'],
      },
      'Release': {
        'inherit_from': ['Common_Base', 'x86_Base', 'Release_Base'],
      },
      'conditions': [
        [ 'OS=="win"', {
          # TODO(bradnelson): add a gyp mechanism to make this more graceful.
          'Debug_x64': {
            'inherit_from': ['Common_Base', 'x64_Base', 'Debug_Base'],
          },
          'Release_x64': {
            'inherit_from': ['Common_Base', 'x64_Base', 'Release_Base'],
          },
        }],
      ],
    },
  },
  'conditions': [
    ['os_posix==1 and OS!="mac" and OS!="ios"', {
      'target_defaults': {
        # Enable -Werror by default, but put it in a variable so it can
        # be disabled in ~/.gyp/include.gypi on the valgrind builders.
        'variables': {
          'werror%': '-Werror',
          'libraries_for_target%': '',
        },
        'defines': [
          '_FILE_OFFSET_BITS=64',
        ],
        'cflags': [
          '<(werror)',  # See note above about the werror variable.
          '-pthread',
          '-fno-exceptions',
          '-fno-strict-aliasing',  # See http://crbug.com/32204
          '-Wall',
          # TODO(evan): turn this back on once all the builds work.
          # '-Wextra',
          # Don't warn about unused function params.  We use those everywhere.
          '-Wno-unused-parameter',
          # Don't warn about the "struct foo f = {0};" initialization pattern.
          '-Wno-missing-field-initializers',
          # Don't export any symbols (for example, to plugins we dlopen()).
          # Note: this is *required* to make some plugins work.
          '-fvisibility=hidden',
          '-pipe',
        ],
        'cflags_cc': [
          '-fno-rtti',
          '-fno-threadsafe-statics',
          # Make inline functions have hidden visiblity by default.
          # Surprisingly, not covered by -fvisibility=hidden.
          '-fvisibility-inlines-hidden',
          # GCC turns on -Wsign-compare for C++ under -Wall, but clang doesn't,
          # so we specify it explicitly.
          # TODO(fischman): remove this if http://llvm.org/PR10448 obsoletes it.
          # http://code.google.com/p/chromium/issues/detail?id=90453
          '-Wsign-compare',
        ],
        'ldflags': [
          '-pthread', '-Wl,-z,noexecstack',
        ],
        'libraries' : [
          '<(libraries_for_target)',
        ],
        'configurations': {
          'Debug_Base': {
            'variables': {
              'debug_optimize%': '0',
            },
            'defines': [
              '_DEBUG',
            ],
            'cflags': [
              '-O>(debug_optimize)',
              '-g',
            ],
            'conditions' : [
              ['OS=="android" and android_full_debug==0', {
                # Some configurations are copied from Release_Base to reduce
                # the binary size.
                'variables': {
                  'debug_optimize%': 's',
                },
                'cflags': [
                  '-fomit-frame-pointer',
                  '-fdata-sections',
                  '-ffunction-sections',
                ],
                'ldflags': [
                  '-Wl,-O1',
                  '-Wl,--as-needed',
                  '-Wl,--gc-sections',
                ],
              }],
            ],
          },
          'Release_Base': {
            'variables': {
              'release_optimize%': '2',
              # Binaries become big and gold is unable to perform GC
              # and remove unused sections for some of test targets
              # on 32 bit platform.
              # (This is currently observed only in chromeos valgrind bots)
              # The following flag is to disable --gc-sections linker
              # option for these bots.
              'no_gc_sections%': 0,

              # TODO(bradnelson): reexamine how this is done if we change the
              # expansion of configurations
              'release_valgrind_build%': 0,
            },
            'cflags': [
              '-O<(release_optimize)',
              # Don't emit the GCC version ident directives, they just end up
              # in the .comment section taking up binary size.
              '-fno-ident',
              # Put data and code in their own sections, so that unused symbols
              # can be removed at link time with --gc-sections.
              '-fdata-sections',
              '-ffunction-sections',
            ],
            'ldflags': [
              # Specifically tell the linker to perform optimizations.
              # See http://lwn.net/Articles/192624/ .
              '-Wl,-O1',
              '-Wl,--as-needed',
            ],
            'conditions' : [
              ['no_gc_sections==0', {
                'ldflags': [
                  '-Wl,--gc-sections',
                ],
              }],
              ['OS=="android"', {
                'variables': {
                  'release_optimize%': 's',
                },
                'cflags': [
                  '-fomit-frame-pointer',
                ],
              }],
              ['clang==1', {
                'cflags!': [
                  '-fno-ident',
                ],
              }],
              ['profiling==1', {
                'cflags': [
                  '-fno-omit-frame-pointer',
                  '-g',
                ],
              }],
            ],
          },
        },
        'variants': {
          'coverage': {
            'cflags': ['-fprofile-arcs', '-ftest-coverage'],
            'ldflags': ['-fprofile-arcs'],
          },
          'profile': {
            'cflags': ['-pg', '-g'],
            'ldflags': ['-pg'],
          },
          'symbols': {
            'cflags': ['-g'],
          },
        },
        'conditions': [
          ['target_arch=="ia32"', {
            'target_conditions': [
              ['_toolset=="target"', {
                'asflags': [
                  # Needed so that libs with .s files (e.g. libicudata.a)
                  # are compatible with the general 32-bit-ness.
                  '-32',
                ],
                # All floating-point computations on x87 happens in 80-bit
                # precision.  Because the C and C++ language standards allow
                # the compiler to keep the floating-point values in higher
                # precision than what's specified in the source and doing so
                # is more efficient than constantly rounding up to 64-bit or
                # 32-bit precision as specified in the source, the compiler,
                # especially in the optimized mode, tries very hard to keep
                # values in x87 floating-point stack (in 80-bit precision)
                # as long as possible. This has important side effects, that
                # the real value used in computation may change depending on
                # how the compiler did the optimization - that is, the value
                # kept in 80-bit is different than the value rounded down to
                # 64-bit or 32-bit. There are possible compiler options to
                # make this behavior consistent (e.g. -ffloat-store would keep
                # all floating-values in the memory, thus force them to be
                # rounded to its original precision) but they have significant
                # runtime performance penalty.
                #
                # -mfpmath=sse -msse2 makes the compiler use SSE instructions
                # which keep floating-point values in SSE registers in its
                # native precision (32-bit for single precision, and 64-bit
                # for double precision values). This means the floating-point
                # value used during computation does not change depending on
                # how the compiler optimized the code, since the value is
                # always kept in its specified precision.
                'conditions': [
                  ['branding=="Chromium" and disable_sse2==0', {
                    'cflags': [
                      '-march=pentium4',
                      '-msse2',
                      '-mfpmath=sse',
                    ],
                  }],
                  # ChromeOS targets Pinetrail, which is sse3, but most of the
                  # benefit comes from sse2 so this setting allows ChromeOS
                  # to build on other CPUs.  In the future -march=atom would
                  # help but requires a newer compiler.
                  ['chromeos==1 and disable_sse2==0', {
                    'cflags': [
                      '-msse2',
                    ],
                  }],
                  # Install packages have started cropping up with
                  # different headers between the 32-bit and 64-bit
                  # versions, so we have to shadow those differences off
                  # and make sure a 32-bit-on-64-bit build picks up the
                  # right files.
                  # For android build, use NDK headers instead of host headers
                  ['host_arch!="ia32" and OS!="android"', {
                    'include_dirs+': [
                      '/usr/include32',
                    ],
                  }],
                ],
               'target_conditions': [
                 ['_toolset=="target" and OS!="android"', {
                    # -mmmx allows mmintrin.h to be used for mmx intrinsics.
                    # video playback is mmx and sse2 optimized.
                    'cflags': [
                      '-m32',
                      '-mmmx',
                    ],
                    'ldflags': [
                      '-m32',
                    ],
                    'cflags_mozilla': [
                      '-m32',
                      '-mmmx',
                    ],
                  }],
                ],
              }],
            ],
          }],
          ['target_arch=="arm"', {
            'target_conditions': [
              ['_toolset=="target"', {
                'cflags_cc': [
                  # The codesourcery arm-2009q3 toolchain warns at that the ABI
                  # has changed whenever it encounters a varargs function. This
                  # silences those warnings, as they are not helpful and
                  # clutter legitimate warnings.
                  '-Wno-abi',
                ],
                'conditions': [
                  ['arm_thumb==1', {
                    'cflags': [
                    '-mthumb',
                    ]
                  }],
                  ['armv7==1', {
                    'cflags': [
                      '-march=armv7-a',
                      '-mtune=cortex-a8',
                      '-mfloat-abi=<(arm_float_abi)',
                    ],
                    'conditions': [
                      ['arm_neon==1', {
                        'cflags': [ '-mfpu=neon', ],
                      }, {
                        'cflags': [ '-mfpu=<(arm_fpu)', ],
                      }],
                    ],
                  }],
                  ['OS=="android"', {
                    # Most of the following flags are derived from what Android
                    # uses by default when building for arm, reference for which
                    # can be found in the following file in the Android NDK:
                    # toolchains/arm-linux-androideabi-4.4.3/setup.mk
                    'cflags': [
                      # The tree-sra optimization (scalar replacement for
                      # aggregates enabling subsequent optimizations) leads to
                      # invalid code generation when using the Android NDK's
                      # compiler (r5-r7). This can be verified using
                      # TestWebKitAPI's WTF.Checked_int8_t test.
                      '-fno-tree-sra',
                      '-fuse-ld=gold',
                      '-Wno-psabi',
                    ],
                    # Android now supports .relro sections properly.
                    # NOTE: While these flags enable the generation of .relro
                    # sections, the generated libraries can still be loaded on
                    # older Android platform versions.
                    'ldflags': [
                        '-Wl,-z,relro',
                        '-Wl,-z,now',
                        '-fuse-ld=gold',
                    ],
                    'conditions': [
                      ['arm_thumb == 1', {
                        # Android toolchain doesn't support -mimplicit-it=thumb
                        'cflags!': [ '-Wa,-mimplicit-it=thumb', ],
                        'cflags': [ '-mthumb-interwork', ],
                      }],
                      ['armv7==0', {
                        # Flags suitable for Android emulator
                        'cflags': [
                          '-march=armv5te',
                          '-mtune=xscale',
                          '-msoft-float',
                        ],
                        'defines': [
                          '__ARM_ARCH_5__',
                          '__ARM_ARCH_5T__',
                          '__ARM_ARCH_5E__',
                          '__ARM_ARCH_5TE__',
                        ],
                      }],
                      ['clang==1', {
                        'cflags!': [
                          # Clang does not support the following options.
                          '-mthumb-interwork',
                          '-finline-limit=64',
                          '-fno-tree-sra',
                          '-fuse-ld=gold',
                          '-Wno-psabi',
                        ],
                      }],
                    ],
                  }],
                ],
              }],
            ],
          }],
          ['linux_fpic==1', {
            'cflags': [
              '-fPIC',
            ],
            'ldflags': [
              '-fPIC',
            ],
          }],
          ['sysroot!=""', {
            'target_conditions': [
              ['_toolset=="target"', {
                'cflags': [
                  '--sysroot=<(sysroot)',
                ],
                'ldflags': [
                  '--sysroot=<(sysroot)',
                ],
              }]]
          }],
          ['clang==1', {
            'cflags': [
              '-Wheader-hygiene',
              # Clang spots more unused functions.
              '-Wno-unused-function',
              # Don't die on dtoa code that uses a char as an array index.
              '-Wno-char-subscripts',
              # Especially needed for gtest macros using enum values from Mac
              # system headers.
              # TODO(pkasting): In C++11 this is legal, so this should be
              # removed when we change to that.  (This is also why we don't
              # bother fixing all these cases today.)
              '-Wno-unnamed-type-template-args',
              # This (rightyfully) complains about 'override', which we use
              # heavily.
              '-Wno-c++11-extensions',

              # Warns on switches on enums that cover all enum values but
              # also contain a default: branch. Chrome is full of that.
              '-Wno-covered-switch-default',

              # TODO(thakis): Remove this.
              '-Wno-implicit-conversion-floating-point-to-bool',
            ],
            'cflags!': [
              # Clang doesn't seem to know know this flag.
              '-mfpmath=sse',
            ],
          }],
          ['clang==1 and clang_use_chrome_plugins==1', {
            'cflags': [
              '<@(clang_chrome_plugins_flags)',
            ],
          }],
          ['clang==1 and clang_load!=""', {
            'cflags': [
              '-Xclang', '-load', '-Xclang', '<(clang_load)',
            ],
          }],
          ['clang==1 and clang_add_plugin!=""', {
            'cflags': [
              '-Xclang', '-add-plugin', '-Xclang', '<(clang_add_plugin)',
            ],
          }],
          ['clang==1 and "<(GENERATOR)"=="ninja"', {
            'cflags': [
              # See http://crbug.com/110262
              '-fcolor-diagnostics',
            ],
          }],
          ['asan==1', {
            'target_conditions': [
              ['_toolset=="target"', {
                'cflags': [
                  '-faddress-sanitizer',
                  '-fno-omit-frame-pointer',
                ],
                'ldflags': [
                  '-faddress-sanitizer',
                ],
                'defines': [
                  'ADDRESS_SANITIZER',
                ],
              }],
            ],
          }],
          ['tsan==1', {
            'target_conditions': [
              ['_toolset=="target"', {
                'cflags': [
                  '-fthread-sanitizer',
                  '-fno-omit-frame-pointer',
                  '-fPIE',
                ],
                'ldflags': [
                  '-fthread-sanitizer',
                ],
                'defines': [
                  'THREAD_SANITIZER',
                  'DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL=1',
                ],
                'target_conditions': [
                  ['_type=="executable"', {
                    'ldflags': [
                      '-pie',
                    ],
                  }],
                ],
              }],
            ],
          }],
          ['order_profiling!=0 and (chromeos==1 or OS=="linux")', {
            'target_conditions' : [
              ['_toolset=="target"', {
                'cflags': [
                  '-finstrument-functions',
                  # Allow mmx intrinsics to inline, so that the
                  # compiler can expand the intrinsics.
                  '-finstrument-functions-exclude-file-list=mmintrin.h',
                ],
              }],
            ],
          }],
          ['linux_breakpad==1', {
            'cflags': [ '-g' ],
            'defines': ['USE_LINUX_BREAKPAD'],
          }],
          ['linux_use_heapchecker==1', {
            'variables': {'linux_use_tcmalloc%': 1},
            'defines': ['USE_HEAPCHECKER'],
          }],
          ['linux_use_tcmalloc==0', {
            'defines': ['NO_TCMALLOC'],
          }],
          ['linux_keep_shadow_stacks==1', {
            'defines': ['KEEP_SHADOW_STACKS'],
            'cflags': [
              '-finstrument-functions',
              # Allow mmx intrinsics to inline, so that the compiler can expand
              # the intrinsics.
              '-finstrument-functions-exclude-file-list=mmintrin.h',
            ],
          }],
          ['linux_use_gold_flags==1', {
            'ldflags': [
              # Experimentation found that using four linking threads
              # saved ~20% of link time.
              # https://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thread/281527606915bb36
              '-Wl,--threads',
              '-Wl,--thread-count=4',
            ],
            'conditions': [
              ['release_valgrind_build==0', {
                'target_conditions': [
                  ['_toolset=="target"', {
                    'ldflags': [
                      # There seems to be a conflict of --icf and -pie
                      # in gold which can generate crashy binaries. As
                      # a security measure, -pie takes precendence for
                      # now.
                      #'-Wl,--icf=safe',
                      '-Wl,--icf=none',
                    ],
                  }],
                ],
              }],
            ],
          }],
          ['linux_use_gold_binary==1', {
            'variables': {
              'conditions': [
                ['inside_chromium_build==1', {
                  # We pass the path to gold to the compiler.  gyp leaves
                  # unspecified what the cwd is when running the compiler,
                  # so the normal gyp path-munging fails us.  This hack
                  # gets the right path.
                  'gold_path': '<(PRODUCT_DIR)/../../third_party/gold',
                }, {
                  'gold_path': '<(PRODUCT_DIR)/../../Source/WebKit/chromium/third_party/gold',
                }]
              ]
            },
            'ldflags': [
              # Put our gold binary in the search path for the linker.
              '-B<(gold_path)',
            ],
          }],
        ],
      },
    }],
    # FreeBSD-specific options; note that most FreeBSD options are set above,
    # with Linux.
    ['OS=="freebsd"', {
      'target_defaults': {
        'ldflags': [
          '-Wl,--no-keep-memory',
        ],
      },
    }],
    # Android-specific options; note that most are set above with Linux.
    ['OS=="android"', {
      'variables': {
        # This is the id for the archived chrome symbols. Each build that
        # archives symbols is assigned an id which is then added to GYP_DEFINES.
        # This is written to the device log on crashes just prior to dropping a
        # tombstone. Tools can determine the location of the archived symbols
        # from the id.
        'chrome_symbols_id%': '',
        'conditions': [
          # Use shared stlport library when system one used.
          # Figure this out early since it needs symbols from libgcc.a, so it
          # has to be before that in the set of libraries.
          ['use_system_stlport==1', {
            'android_stlport_library': 'stlport',
          }, {
            'android_stlport_library': 'stlport_static',
          }],
        ],

        # Placing this variable here prevents from forking libvpx, used
        # by remoting.  Remoting is off, so it needn't built,
        # so forking it's deps seems like overkill.
        # But this variable need defined to properly run gyp.
        # A proper solution is to have an OS==android conditional
        # in third_party/libvpx/libvpx.gyp to define it.
        'libvpx_path': 'lib/linux/arm',
      },
      'target_defaults': {
        'variables': {
          'release_extra_cflags%': '',
        },

        'target_conditions': [
          # Settings for building device targets using Android's toolchain.
          # These are based on the setup.mk file from the Android NDK.
          #
          # The NDK Android executable link step looks as follows:
          #  $LDFLAGS
          #  $(TARGET_CRTBEGIN_DYNAMIC_O)  <-- crtbegin.o
          #  $(PRIVATE_OBJECTS)            <-- The .o that we built
          #  $(PRIVATE_STATIC_LIBRARIES)   <-- The .a that we built
          #  $(TARGET_LIBGCC)              <-- libgcc.a
          #  $(PRIVATE_SHARED_LIBRARIES)   <-- The .so that we built
          #  $(PRIVATE_LDLIBS)             <-- System .so
          #  $(TARGET_CRTEND_O)            <-- crtend.o
          #
          # For now the above are approximated for executables by adding
          # crtbegin.o to the end of the ldflags and 'crtend.o' to the end
          # of 'libraries'.
          #
          # The NDK Android shared library link step looks as follows:
          #  $LDFLAGS
          #  $(PRIVATE_OBJECTS)            <-- The .o that we built
          #  -l,--whole-archive
          #  $(PRIVATE_WHOLE_STATIC_LIBRARIES)
          #  -l,--no-whole-archive
          #  $(PRIVATE_STATIC_LIBRARIES)   <-- The .a that we built
          #  $(TARGET_LIBGCC)              <-- libgcc.a
          #  $(PRIVATE_SHARED_LIBRARIES)   <-- The .so that we built
          #  $(PRIVATE_LDLIBS)             <-- System .so
          #
          # For now, assume that whole static libraries are not needed.
          #
          # For both executables and shared libraries, add the proper
          # libgcc.a to the start of libraries which puts it in the
          # proper spot after .o and .a files get linked in.
          #
          # TODO: The proper thing to do longer-tem would be proper gyp
          # support for a custom link command line.
          ['_toolset=="target"', {
           'conditions': [
           ['build_with_mozilla==0', {
            'cflags!': [
              '-pthread',  # Not supported by Android toolchain.
            ],
            'cflags': [
              '-ffunction-sections',
              '-funwind-tables',
              '-g',
              '-fstack-protector',
              '-fno-short-enums',
              '-finline-limit=64',
              '-Wa,--noexecstack',
              '<@(release_extra_cflags)',
            ],
            'ldflags!': [
              '-pthread',  # Not supported by Android toolchain.
            ],
            'ldflags': [
              '-nostdlib',
              '-Wl,--no-undefined',
              # Don't export symbols from statically linked libraries.
              '-Wl,--exclude-libs=ALL',
            ],
            'libraries': [
              '-l<(android_stlport_library)',
              '-lc',
              '-ldl',
              '-lstdc++',
              '-lm',
            ],
            'conditions': [
              ['android_upstream_bringup==1', {
                'defines': ['ANDROID_UPSTREAM_BRINGUP=1',],
              }],
              ['clang==1', {
                'cflags': [
                  # Work around incompatibilities between bionic and clang
                  # headers.
                  '-D__compiler_offsetof=__builtin_offsetof',
                  '-Dnan=__builtin_nan',
                ],
                'conditions': [
                  ['target_arch=="arm"', {
                    'cflags': [
                      '-target arm-linux-androideabi',
                      '-mllvm -arm-enable-ehabi',
                    ],
                    'ldflags': [
                      '-target arm-linux-androideabi',
                    ],
                  }],
                  ['target_arch=="ia32"', {
                    'cflags': [
                      '-target x86-linux-androideabi',
                    ],
                    'ldflags': [
                      '-target x86-linux-androideabi',
                    ],
                  }],
                ],
              }],
              ['android_build_type==0', {
                'defines': [
                  # The NDK has these things, but doesn't define the constants
                  # to say that it does. Define them here instead.
                  'HAVE_SYS_UIO_H',
                ],
                'cflags': [
                  '--sysroot=<(android_ndk_sysroot)',
                ],
                'ldflags': [
                  '--sysroot=<(android_ndk_sysroot)',
                ],
              }],
              ['android_build_type==1', {
                'include_dirs': [
                  # OpenAL headers from the Android tree.
                  '<(android_src)/frameworks/wilhelm/include',
                ],
                'cflags': [
                  # Chromium builds its own (non-third-party) code with
                  # -Werror to make all warnings into errors. However, Android
                  # enables warnings that Chromium doesn't, so some of these
                  # extra warnings trip and break things.
                  # For now, we leave these warnings enabled but prevent them
                  # from being treated as errors.
                  #
                  # Things that are part of -Wextra:
                  '-Wno-error=extra', # Enabled by -Wextra, but no specific flag
                  '-Wno-error=ignored-qualifiers',
                  '-Wno-error=type-limits',
                  # Other things unrelated to -Wextra:
                  '-Wno-error=non-virtual-dtor',
                  '-Wno-error=sign-promo',
                ],
                'cflags_cc': [
                  # Disabling c++0x-compat should be handled in WebKit, but
                  # this currently doesn't work because gcc_version is not set
                  # correctly when building with the Android build system.
                  # TODO(torne): Fix this in WebKit.
                  '-Wno-error=c++0x-compat',
                ],
              }],
              ['android_build_type==1 and chromium_code==0', {
                'cflags': [
                  # There is a class of warning which:
                  #  1) Android always enables and also treats as errors
                  #  2) Chromium ignores in third party code
                  # For now, I am leaving these warnings enabled but preventing
                  # them from being treated as errors here.
                  '-Wno-error=address',
                  '-Wno-error=format-security',
                  '-Wno-error=non-virtual-dtor',
                  '-Wno-error=return-type',
                  '-Wno-error=sequence-point',
                ],
              }],
              ['target_arch == "arm"', {
                'ldflags': [
                  # Enable identical code folding to reduce size.
                  '-Wl,--icf=safe',
                ],
              }],
              # NOTE: The stlport header include paths below are specified in
              # cflags rather than include_dirs because they need to come
              # after include_dirs. Think of them like system headers, but
              # don't use '-isystem' because the arm-linux-androideabi-4.4.3
              # toolchain (circa Gingerbread) will exhibit strange errors.
              # The include ordering here is important; change with caution.
              ['use_system_stlport==1', {
                'cflags': [
                  # For libstdc++/include, which is used by stlport.
                  '-I<(android_src)/bionic',
                  '-I<(android_src)/external/stlport/stlport',
                ],
              }, { # else: use_system_stlport!=1
                'cflags': [
                  '-I<(android_ndk_root)/sources/cxx-stl/stlport/stlport',
                ],
                'conditions': [
                  ['target_arch=="arm" and armv7==1', {
                    'ldflags': [
                      '-L<(android_ndk_root)/sources/cxx-stl/stlport/libs/armeabi-v7a',
                    ],
                  }],
                  ['target_arch=="arm" and armv7==0', {
                    'ldflags': [
                      '-L<(android_ndk_root)/sources/cxx-stl/stlport/libs/armeabi',
                    ],
                  }],
                  ['target_arch=="ia32"', {
                    'ldflags': [
                      '-L<(android_ndk_root)/sources/cxx-stl/stlport/libs/x86',
                    ],
                  }],
                ],
              }],
              ['target_arch=="ia32"', {
                # The x86 toolchain currently has problems with stack-protector.
                'cflags!': [
                  '-fstack-protector',
                ],
                'cflags': [
                  '-fno-stack-protector',
                ],
              }],
            ],
            'target_conditions': [
              ['_type=="executable"', {
                'ldflags': [
                  '-Bdynamic',
                  '-Wl,-dynamic-linker,/system/bin/linker',
                  '-Wl,--gc-sections',
                  '-Wl,-z,nocopyreloc',
                  # crtbegin_dynamic.o should be the last item in ldflags.
                  '<(android_ndk_lib)/crtbegin_dynamic.o',
                ],
                'libraries': [
                  # crtend_android.o needs to be the last item in libraries.
                  # Do not add any libraries after this!
                  '<(android_ndk_lib)/crtend_android.o',
                ],
              }],
              ['_type=="shared_library" or _type=="loadable_module"', {
                'ldflags': [
                  '-Wl,-shared,-Bsymbolic',
                  # crtbegin_so.o should be the last item in ldflags.
                  '<(android_ndk_lib)/crtbegin_so.o',
                ],
                'libraries': [
                  # crtend_so.o needs to be the last item in libraries.
                  # Do not add any libraries after this!
                  '<(android_ndk_lib)/crtend_so.o',
                ],
              }],
            ],

           }], # build_with_mozilla== 0

            ],
            'defines': [
              'ANDROID',
              '__GNU_SOURCE=1',  # Necessary for clone()
              'USE_STLPORT=1',
              '_STLP_USE_PTR_SPECIALIZATIONS=1',
              'CHROME_SYMBOLS_ID="<(chrome_symbols_id)"',
            ],
           }],
          # Settings for building host targets using the system toolchain.
          ['_toolset=="host"', {
            'cflags!': [
              # Due to issues in Clang build system, using ASan on 32-bit
              # binaries on x86_64 host is problematic.
              # TODO(eugenis): re-enable.
              '-faddress-sanitizer',
            ],
            'ldflags!': [
              '-faddress-sanitizer',
              '-Wl,-z,noexecstack',
              '-Wl,--gc-sections',
              '-Wl,-O1',
              '-Wl,--as-needed',
            ],
            'sources/': [
              ['exclude', '_android(_unittest)?\\.cc$'],
              ['exclude', '(^|/)android/']
            ],
          }],
        ],
      },
    }],
    ['OS=="solaris"', {
      'cflags!': ['-fvisibility=hidden'],
      'cflags_cc!': ['-fvisibility-inlines-hidden'],
    }],
    ['OS=="mac" or OS=="ios"', {
      'target_defaults': {
        'mac_bundle': 0,
        'xcode_settings': {
          'ALWAYS_SEARCH_USER_PATHS': 'NO',
          'GCC_C_LANGUAGE_STANDARD': 'c99',         # -std=c99
          'GCC_CW_ASM_SYNTAX': 'NO',                # No -fasm-blocks
          'GCC_ENABLE_CPP_EXCEPTIONS': 'NO',        # -fno-exceptions
          'GCC_ENABLE_CPP_RTTI': 'NO',              # -fno-rtti
          'GCC_ENABLE_PASCAL_STRINGS': 'NO',        # No -mpascal-strings
          # GCC_INLINES_ARE_PRIVATE_EXTERN maps to -fvisibility-inlines-hidden
          'GCC_INLINES_ARE_PRIVATE_EXTERN': 'YES',
          'GCC_OBJC_CALL_CXX_CDTORS': 'YES',        # -fobjc-call-cxx-cdtors
          'GCC_SYMBOLS_PRIVATE_EXTERN': 'YES',      # -fvisibility=hidden
          'GCC_THREADSAFE_STATICS': 'NO',           # -fno-threadsafe-statics
          'GCC_TREAT_WARNINGS_AS_ERRORS': 'YES',    # -Werror
          'GCC_VERSION': '4.2',
          'GCC_WARN_ABOUT_MISSING_NEWLINE': 'YES',  # -Wnewline-eof
          'USE_HEADERMAP': 'NO',
          'WARNING_CFLAGS': [
            '-Wall',
            '-Wendif-labels',
            '-Wextra',
            # Don't warn about unused function parameters.
            '-Wno-unused-parameter',
            # Don't warn about the "struct foo f = {0};" initialization
            # pattern.
            '-Wno-missing-field-initializers',
          ],
          'conditions': [
            ['chromium_mac_pch', {'GCC_PRECOMPILE_PREFIX_HEADER': 'YES'},
                                 {'GCC_PRECOMPILE_PREFIX_HEADER': 'NO'}
            ],
          ],
        },
        'target_conditions': [
          ['_type!="static_library"', {
            'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-search_paths_first']},
          }],
          ['_mac_bundle', {
            'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-ObjC']},
          }],
        ],  # target_conditions
      },  # target_defaults
    }],  # OS=="mac" or OS=="ios"
    ['OS=="mac"', {
      'target_defaults': {
        'variables': {
          # These should end with %, but there seems to be a bug with % in
          # variables that are intended to be set to different values in
          # different targets, like these.
          'mac_pie': 1,        # Most executables can be position-independent.
          'mac_real_dsym': 0,  # Fake .dSYMs are fine in most cases.
          # Strip debugging symbols from the target.
          'mac_strip': '<(mac_strip_release)',
        },
        'xcode_settings': {
          'GCC_DYNAMIC_NO_PIC': 'NO',               # No -mdynamic-no-pic
                                                    # (Equivalent to -fPIC)
          # MACOSX_DEPLOYMENT_TARGET maps to -mmacosx-version-min
          'MACOSX_DEPLOYMENT_TARGET': '<(mac_deployment_target)',
          # Keep pch files below xcodebuild/.
          'SHARED_PRECOMPS_DIR': '$(CONFIGURATION_BUILD_DIR)/SharedPrecompiledHeaders',
          'OTHER_CFLAGS': [
            '-fno-strict-aliasing',  # See http://crbug.com/32204
          ],
          'conditions': [
            ['clang==1', {
              'CC': '$(SOURCE_ROOT)/<(clang_dir)/clang',
              'LDPLUSPLUS': '$(SOURCE_ROOT)/<(clang_dir)/clang++',

              # Don't use -Wc++0x-extensions, which Xcode 4 enables by default
              # when buliding with clang. This warning is triggered when the
              # override keyword is used via the OVERRIDE macro from
              # base/compiler_specific.h.
              'CLANG_WARN_CXX0X_EXTENSIONS': 'NO',

              'GCC_VERSION': 'com.apple.compilers.llvm.clang.1_0',
              'WARNING_CFLAGS': [
                '-Wheader-hygiene',
                # Don't die on dtoa code that uses a char as an array index.
                # This is required solely for base/third_party/dmg_fp/dtoa.cc.
                '-Wno-char-subscripts',
                # Clang spots more unused functions.
                '-Wno-unused-function',
                # See comments on this flag higher up in this file.
                '-Wno-unnamed-type-template-args',
                # This (rightyfully) complains about 'override', which we use
                # heavily.
                '-Wno-c++11-extensions',

                # Warns on switches on enums that cover all enum values but
                # also contain a default: branch. Chrome is full of that.
                '-Wno-covered-switch-default',

                # TODO(thakis): Remove this.
                '-Wno-implicit-conversion-floating-point-to-bool',
              ],
            }],
            ['clang==1 and clang_use_chrome_plugins==1', {
              'OTHER_CFLAGS': [
                '<@(clang_chrome_plugins_flags)',
              ],
            }],
            ['clang==1 and clang_load!=""', {
              'OTHER_CFLAGS': [
                '-Xclang', '-load', '-Xclang', '<(clang_load)',
              ],
            }],
            ['clang==1 and clang_add_plugin!=""', {
              'OTHER_CFLAGS': [
                '-Xclang', '-add-plugin', '-Xclang', '<(clang_add_plugin)',
              ],
            }],
            ['clang==1 and "<(GENERATOR)"=="ninja"', {
              'OTHER_CFLAGS': [
                # See http://crbug.com/110262
                '-fcolor-diagnostics',
              ],
            }],
          ],
        },
        'conditions': [
          ['clang==1', {
            'variables': {
              'clang_dir': '../third_party/llvm-build/Release+Asserts/bin',
            },
          }],
          ['asan==1', {
            'xcode_settings': {
              'OTHER_CFLAGS': [
                '-faddress-sanitizer',
              ],
            },
            'defines': [
              'ADDRESS_SANITIZER',
            ],
          }],
        ],
        'target_conditions': [
          ['_type!="static_library"', {
            'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-search_paths_first']},
            'conditions': [
              ['asan==1', {
                'xcode_settings': {
                  'OTHER_LDFLAGS': [
                    '-faddress-sanitizer',
                  ],
                },
              }],
            ],
          }],
          ['_mac_bundle', {
            'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-ObjC']},
          }],
          ['_type=="executable"', {
            'postbuilds': [
              {
                # Arranges for data (heap) pages to be protected against
                # code execution when running on Mac OS X 10.7 ("Lion"), and
                # ensures that the position-independent executable (PIE) bit
                # is set for ASLR when running on Mac OS X 10.5 ("Leopard").
                'variables': {
                  # Define change_mach_o_flags in a variable ending in _path
                  # so that GYP understands it's a path and performs proper
                  # relativization during dict merging.
                  'change_mach_o_flags':
                      'mac/change_mach_o_flags_from_xcode.sh',
                  'change_mach_o_flags_options%': [
                  ],
                  'target_conditions': [
                    ['mac_pie==0 or release_valgrind_build==1', {
                      # Don't enable PIE if it's unwanted. It's unwanted if
                      # the target specifies mac_pie=0 or if building for
                      # Valgrind, because Valgrind doesn't understand slide.
                      # See the similar mac_pie/release_valgrind_build check
                      # below.
                      'change_mach_o_flags_options': [
                        '--no-pie',
                      ],
                    }],
                  ],
                },
                'postbuild_name': 'Change Mach-O Flags',
                'action': [
                   '$(srcdir)$(os_sep)build$(os_sep)<(change_mach_o_flags)',
                  '>@(change_mach_o_flags_options)',
                ],
              },
            ],
            'conditions': [
              ['asan==1', {
                'variables': {
                 'asan_saves_file': 'asan.saves',
                },
                'xcode_settings': {
                  'CHROMIUM_STRIP_SAVE_FILE': '<(asan_saves_file)',
                },
              }],
            ],
            'target_conditions': [
              ['mac_pie==1 and release_valgrind_build==0', {
                # Turn on position-independence (ASLR) for executables. When
                # PIE is on for the Chrome executables, the framework will
                # also be subject to ASLR.
                # Don't do this when building for Valgrind, because Valgrind
                # doesn't understand slide. TODO: Make Valgrind on Mac OS X
                # understand slide, and get rid of the Valgrind check.
                'xcode_settings': {
                  'OTHER_LDFLAGS': [
                    '-Wl,-pie',  # Position-independent executable (MH_PIE)
                  ],
                },
              }],
            ],
          }],
          ['(_type=="executable" or _type=="shared_library" or \
             _type=="loadable_module") and mac_strip!=0', {
            'target_conditions': [
              ['mac_real_dsym == 1', {
                # To get a real .dSYM bundle produced by dsymutil, set the
                # debug information format to dwarf-with-dsym.  Since
                # strip_from_xcode will not be used, set Xcode to do the
                # stripping as well.
                'configurations': {
                  'Release_Base': {
                    'xcode_settings': {
                      'DEBUG_INFORMATION_FORMAT': 'dwarf-with-dsym',
                      'DEPLOYMENT_POSTPROCESSING': 'YES',
                      'STRIP_INSTALLED_PRODUCT': 'YES',
                      'target_conditions': [
                        ['_type=="shared_library" or _type=="loadable_module"', {
                          # The Xcode default is to strip debugging symbols
                          # only (-S).  Local symbols should be stripped as
                          # well, which will be handled by -x.  Xcode will
                          # continue to insert -S when stripping even when
                          # additional flags are added with STRIPFLAGS.
                          'STRIPFLAGS': '-x',
                        }],  # _type=="shared_library" or _type=="loadable_module"'
                      ],  # target_conditions
                    },  # xcode_settings
                  },  # configuration "Release"
                },  # configurations
              }, {  # mac_real_dsym != 1
                # To get a fast fake .dSYM bundle, use a post-build step to
                # produce the .dSYM and strip the executable.  strip_from_xcode
                # only operates in the Release configuration.
                'postbuilds': [
                  {
                    'variables': {
                      # Define strip_from_xcode in a variable ending in _path
                      # so that gyp understands it's a path and performs proper
                      # relativization during dict merging.
                      'strip_from_xcode': 'mac/strip_from_xcode',
                    },
                    'postbuild_name': 'Strip If Needed',
                    'action': ['$(srcdir)$(os_sep)build$(os_sep)<(strip_from_xcode)'],
                  },
                ],  # postbuilds
              }],  # mac_real_dsym
            ],  # target_conditions
          }],  # (_type=="executable" or _type=="shared_library" or
               #  _type=="loadable_module") and mac_strip!=0
        ],  # target_conditions
      },  # target_defaults
    }],  # OS=="mac"
    ['OS=="ios"', {
      'target_defaults': {
        'xcode_settings' : {
          'GCC_VERSION': 'com.apple.compilers.llvm.clang.1_0',

          # This next block is mostly common with the 'mac' section above,
          # but keying off (or setting) 'clang' isn't valid for iOS as it
          # also seems to mean using the custom build of clang.

          # Don't use -Wc++0x-extensions, which Xcode 4 enables by default
          # when buliding with clang. This warning is triggered when the
          # override keyword is used via the OVERRIDE macro from
          # base/compiler_specific.h.
          'CLANG_WARN_CXX0X_EXTENSIONS': 'NO',
          'WARNING_CFLAGS': [
            '-Wheader-hygiene',
            # Don't die on dtoa code that uses a char as an array index.
            # This is required solely for base/third_party/dmg_fp/dtoa.cc.
            '-Wno-char-subscripts',
            # Clang spots more unused functions.
            '-Wno-unused-function',
            # See comments on this flag higher up in this file.
            '-Wno-unnamed-type-template-args',
            # This (rightyfully) complains about 'override', which we use
            # heavily.
            '-Wno-c++11-extensions',
          ],
        },
        'target_conditions': [
          ['_type=="executable"', {
            'configurations': {
              'Release_Base': {
                'xcode_settings': {
                  'DEPLOYMENT_POSTPROCESSING': 'YES',
                  'STRIP_INSTALLED_PRODUCT': 'YES',
                },
              },
            },
            'xcode_settings': {
              'conditions': [
                ['chromium_ios_signing', {
                  # iOS SDK wants everything for device signed.
                  'CODE_SIGN_IDENTITY[sdk=iphoneos*]': 'iPhone Developer',
                }, {
                  'CODE_SIGNING_REQUIRED': 'NO',
                  'CODE_SIGN_IDENTITY[sdk=iphoneos*]': '',
                }],
              ],
            },
          }],
        ],  # target_conditions
      },  # target_defaults
    }],  # OS=="ios"
    ['OS=="win"', {
      'target_defaults': {
        'defines': [
          'WIN32',
          '_WINDOWS',
          'NOMINMAX',
          '_CRT_RAND_S',
          'CERT_CHAIN_PARA_HAS_EXTRA_FIELDS',
          'WIN32_LEAN_AND_MEAN',
          '_ATL_NO_OPENGL',
        ],
        'conditions': [
          ['build_with_mozilla==0', {
              'defines': [
                '_WIN32_WINNT=0x0602',
                'WINVER=0x0602',
              ],
          }],
          ['buildtype=="Official"', {
              # In official builds, targets can self-select an optimization
              # level by defining a variable named 'optimize', and setting it
              # to one of
              # - "size", optimizes for minimal code size - the default.
              # - "speed", optimizes for speed over code size.
              # - "max", whole program optimization and link-time code
              #   generation. This is very expensive and should be used
              #   sparingly.
              'variables': {
                'optimize%': 'size',
              },
              'target_conditions': [
                ['optimize=="size"', {
                    'msvs_settings': {
                      'VCCLCompilerTool': {
                        # 1, optimizeMinSpace, Minimize Size (/O1)
                        'Optimization': '1',
                        # 2, favorSize - Favor small code (/Os)
                        'FavorSizeOrSpeed': '2',
                      },
                    },
                  },
                ],
                ['optimize=="speed"', {
                    'msvs_settings': {
                      'VCCLCompilerTool': {
                        # 2, optimizeMaxSpeed, Maximize Speed (/O2)
                        'Optimization': '2',
                        # 1, favorSpeed - Favor fast code (/Ot)
                        'FavorSizeOrSpeed': '1',
                      },
                    },
                  },
                ],
                ['optimize=="max"', {
                    'msvs_settings': {
                      'VCCLCompilerTool': {
                        # 2, optimizeMaxSpeed, Maximize Speed (/O2)
                        'Optimization': '2',
                        # 1, favorSpeed - Favor fast code (/Ot)
                        'FavorSizeOrSpeed': '1',
                        # This implies link time code generation.
                        'WholeProgramOptimization': 'true',
                      },
                    },
                  },
                ],
              ],
            },
          ],
          ['component=="static_library"', {
            'defines': [
              '_HAS_EXCEPTIONS=0',
            ],
          }],
          ['MSVS_VERSION=="2008"', {
            'defines': [
              '_HAS_TR1=0',
            ],
          }],
          ['secure_atl', {
            'defines': [
              '_SECURE_ATL',
            ],
          }],
        ],
        'msvs_system_include_dirs': [
          '<(windows_sdk_path)/Include/shared',
          '<(windows_sdk_path)/Include/um',
          '<(windows_sdk_path)/Include/winrt',
#          '<(directx_sdk_path)/Include',
          '$(VSInstallDir)/VC/atlmfc/include',
        ],
        'msvs_cygwin_dirs': ['<(DEPTH)/third_party/cygwin'],
        'msvs_disabled_warnings': [4351, 4396, 4503, 4819,
          # TODO(maruel): These warnings are level 4. They will be slowly
          # removed as code is fixed.
          4100, 4121, 4125, 4127, 4130, 4131, 4189, 4201, 4238, 4244, 4245,
          4310, 4355, 4428, 4481, 4505, 4510, 4512, 4530, 4610, 4611, 4701,
          4702, 4706,
        ],
        'msvs_settings': {
          'VCCLCompilerTool': {
            'AdditionalOptions': ['/MP'],
            'MinimalRebuild': 'false',
            'BufferSecurityCheck': 'true',
            'EnableFunctionLevelLinking': 'true',
            'RuntimeTypeInfo': 'false',
            'WarningLevel': '4',
            'WarnAsError': 'true',
            'DebugInformationFormat': '3',
            'conditions': [
              ['component=="shared_library"', {
                'ExceptionHandling': '1',  # /EHsc
              }, {
                'ExceptionHandling': '0',
              }],
            ],
          },
          'VCLibrarianTool': {
            'AdditionalOptions': ['/ignore:4221'],
            'AdditionalLibraryDirectories': [
#              '<(directx_sdk_path)/Lib/x86',
              '<(windows_sdk_path)/Lib/win8/um/x86',
            ],
          },
          'VCLinkerTool': {
            'AdditionalDependencies': [
              'wininet.lib',
              'dnsapi.lib',
              'version.lib',
              'msimg32.lib',
              'ws2_32.lib',
              'usp10.lib',
              'dbghelp.lib',
              'winmm.lib',
              'shlwapi.lib',
            ],

            'conditions': [
              ['msvs_express', {
                # Explicitly required when using the ATL with express
                'AdditionalDependencies': [
                  'atlthunk.lib',
                ],

                # ATL 8.0 included in WDK 7.1 makes the linker to generate
                # almost eight hundred LNK4254 and LNK4078 warnings:
                #   - warning LNK4254: section 'ATL' (50000040) merged into
                #     '.rdata' (40000040) with different attributes
                #   - warning LNK4078: multiple 'ATL' sections found with
                #     different attributes
                'AdditionalOptions': ['/ignore:4254', '/ignore:4078'],
              }],
              ['MSVS_VERSION=="2005e"', {
                # Non-express versions link automatically to these
                'AdditionalDependencies': [
                  'advapi32.lib',
                  'comdlg32.lib',
                  'ole32.lib',
                  'shell32.lib',
                  'user32.lib',
                  'winspool.lib',
                ],
              }],
            ],
            'AdditionalLibraryDirectories': [
#              '<(directx_sdk_path)/Lib/x86', XXXX
              '<(windows_sdk_path)/Lib/win8/um/x86',
            ],
            'GenerateDebugInformation': 'true',
            'MapFileName': '$(OutDir)\\$(TargetName).map',
            'ImportLibrary': '$(OutDir)\\lib\\$(TargetName).lib',
            'FixedBaseAddress': '1',
            # SubSystem values:
            #   0 == not set
            #   1 == /SUBSYSTEM:CONSOLE
            #   2 == /SUBSYSTEM:WINDOWS
            # Most of the executables we'll ever create are tests
            # and utilities with console output.
            'SubSystem': '1',
          },
          'VCMIDLTool': {
            'GenerateStublessProxies': 'true',
            'TypeLibraryName': '$(InputName).tlb',
            'OutputDirectory': '$(IntDir)',
            'HeaderFileName': '$(InputName).h',
            'DLLDataFileName': '$(InputName).dlldata.c',
            'InterfaceIdentifierFileName': '$(InputName)_i.c',
            'ProxyFileName': '$(InputName)_p.c',
          },
          'VCResourceCompilerTool': {
            'Culture' : '1033',
            'AdditionalIncludeDirectories': [
              '<(DEPTH)',
              '<(SHARED_INTERMEDIATE_DIR)',
            ],
          },
        },
      },
    }],
    ['disable_nacl==1', {
      'target_defaults': {
        'defines': [
          'DISABLE_NACL',
        ],
      },
    }],
    ['OS=="win" and msvs_use_common_linker_extras', {
      'target_defaults': {
        'msvs_settings': {
          'VCLinkerTool': {
            'DelayLoadDLLs': [
              'dbghelp.dll',
              'dwmapi.dll',
              'shell32.dll',
              'uxtheme.dll',
            ],
          },
        },
        'configurations': {
          'x86_Base': {
            'msvs_settings': {
              'VCLinkerTool': {
                'AdditionalOptions': [
                  '/safeseh',
                  '/dynamicbase',
                  '/ignore:4199',
                  '/ignore:4221',
                  '/nxcompat',
                ],
              },
            },
          },
          'x64_Base': {
            'msvs_settings': {
              'VCLinkerTool': {
                'AdditionalOptions': [
                  # safeseh is not compatible with x64
                  '/dynamicbase',
                  '/ignore:4199',
                  '/ignore:4221',
                  '/nxcompat',
                ],
              },
            },
          },
        },
      },
    }],
    ['enable_new_npdevice_api==1', {
      'target_defaults': {
        'defines': [
          'ENABLE_NEW_NPDEVICE_API',
        ],
      },
    }],
  ],
  'xcode_settings': {
    # DON'T ADD ANYTHING NEW TO THIS BLOCK UNLESS YOU REALLY REALLY NEED IT!
    # This block adds *project-wide* configuration settings to each project
    # file.  It's almost always wrong to put things here.  Specify your
    # custom xcode_settings in target_defaults to add them to targets instead.

    'conditions': [
      # In an Xcode Project Info window, the "Base SDK for All Configurations"
      # setting sets the SDK on a project-wide basis. In order to get the
      # configured SDK to show properly in the Xcode UI, SDKROOT must be set
      # here at the project level.
      ['OS=="mac"', {
        'conditions': [
          ['mac_sdk_path==""', {
            'SDKROOT': 'macosx<(mac_sdk)',  # -isysroot
          }, {
            'SDKROOT': '<(mac_sdk_path)',  # -isysroot
          }],
        ],
      }],
      ['OS=="ios"', {
        'conditions': [
          ['ios_sdk_path==""', {
            'SDKROOT': 'iphoneos<(ios_sdk)',  # -isysroot
          }, {
            'SDKROOT': '<(ios_sdk_path)',  # -isysroot
          }],
        ],
      }],
      ['OS=="ios"', {
        # Just build armv7 since iOS 4.3+ only supports armv7.
        'ARCHS': '$(ARCHS_UNIVERSAL_IPHONE_OS)',
        'IPHONEOS_DEPLOYMENT_TARGET': '<(ios_deployment_target)',
        # Target both iPhone and iPad.
        'TARGETED_DEVICE_FAMILY': '1,2',
      }],
    ],

    # The Xcode generator will look for an xcode_settings section at the root
    # of each dict and use it to apply settings on a file-wide basis.  Most
    # settings should not be here, they should be in target-specific
    # xcode_settings sections, or better yet, should use non-Xcode-specific
    # settings in target dicts.  SYMROOT is a special case, because many other
    # Xcode variables depend on it, including variables such as
    # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
    # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
    # files to appear (when present) in the UI as actual files and not red
    # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
    # and therefore SYMROOT, needs to be set at the project level.
    'SYMROOT': '<(DEPTH)/xcodebuild',
  },
}