summaryrefslogtreecommitdiff
path: root/configure.ac
blob: d5b4377b92ca67e34874ee2b647d33cef88dbe4b (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
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
# $Id: configure.ac,v 1.582 2014/08/23 07:06:49 djm Exp $
#
# Copyright (c) 1999-2004 Damien Miller
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

AC_INIT([OpenSSH], [Portable], [openssh-unix-dev@mindrot.org])
AC_REVISION($Revision: 1.582 $)
AC_CONFIG_SRCDIR([ssh.c])
AC_LANG([C])

AC_CONFIG_HEADER([config.h])
AC_PROG_CC
AC_CANONICAL_HOST
AC_C_BIGENDIAN

# Checks for programs.
AC_PROG_AWK
AC_PROG_CPP
AC_PROG_RANLIB
AC_PROG_INSTALL
AC_PROG_EGREP
AC_PATH_PROG([AR], [ar])
AC_PATH_PROG([CAT], [cat])
AC_PATH_PROG([KILL], [kill])
AC_PATH_PROGS([PERL], [perl5 perl])
AC_PATH_PROG([SED], [sed])
AC_SUBST([PERL])
AC_PATH_PROG([ENT], [ent])
AC_SUBST([ENT])
AC_PATH_PROG([TEST_MINUS_S_SH], [bash])
AC_PATH_PROG([TEST_MINUS_S_SH], [ksh])
AC_PATH_PROG([TEST_MINUS_S_SH], [sh])
AC_PATH_PROG([SH], [sh])
AC_PATH_PROG([GROFF], [groff])
AC_PATH_PROG([NROFF], [nroff])
AC_PATH_PROG([MANDOC], [mandoc])
AC_SUBST([TEST_SHELL], [sh])

dnl select manpage formatter
if test "x$MANDOC" != "x" ; then
	MANFMT="$MANDOC"
elif test "x$NROFF" != "x" ; then
	MANFMT="$NROFF -mandoc"
elif test "x$GROFF" != "x" ; then
	MANFMT="$GROFF -mandoc -Tascii"
else
	AC_MSG_WARN([no manpage formatted found])
	MANFMT="false"
fi
AC_SUBST([MANFMT])

dnl for buildpkg.sh
AC_PATH_PROG([PATH_GROUPADD_PROG], [groupadd], [groupadd],
	[/usr/sbin${PATH_SEPARATOR}/etc])
AC_PATH_PROG([PATH_USERADD_PROG], [useradd], [useradd],
	[/usr/sbin${PATH_SEPARATOR}/etc])
AC_CHECK_PROG([MAKE_PACKAGE_SUPPORTED], [pkgmk], [yes], [no])
if test -x /sbin/sh; then
	AC_SUBST([STARTUP_SCRIPT_SHELL], [/sbin/sh])
else
	AC_SUBST([STARTUP_SCRIPT_SHELL], [/bin/sh])
fi

# System features
AC_SYS_LARGEFILE

if test -z "$AR" ; then
	AC_MSG_ERROR([*** 'ar' missing, please install or fix your \$PATH ***])
fi

# Use LOGIN_PROGRAM from environment if possible
if test ! -z "$LOGIN_PROGRAM" ; then
	AC_DEFINE_UNQUOTED([LOGIN_PROGRAM_FALLBACK], ["$LOGIN_PROGRAM"],
		[If your header files don't define LOGIN_PROGRAM,
		then use this (detected) from environment and PATH])
else
	# Search for login
	AC_PATH_PROG([LOGIN_PROGRAM_FALLBACK], [login])
	if test ! -z "$LOGIN_PROGRAM_FALLBACK" ; then
		AC_DEFINE_UNQUOTED([LOGIN_PROGRAM_FALLBACK], ["$LOGIN_PROGRAM_FALLBACK"])
	fi
fi

AC_PATH_PROG([PATH_PASSWD_PROG], [passwd])
if test ! -z "$PATH_PASSWD_PROG" ; then
	AC_DEFINE_UNQUOTED([_PATH_PASSWD_PROG], ["$PATH_PASSWD_PROG"],
		[Full path of your "passwd" program])
fi

if test -z "$LD" ; then
	LD=$CC
fi
AC_SUBST([LD])

AC_C_INLINE

AC_CHECK_DECL([LLONG_MAX], [have_llong_max=1], , [#include <limits.h>])
AC_CHECK_DECL([SYSTR_POLICY_KILL], [have_systr_policy_kill=1], , [
	#include <sys/types.h>
	#include <sys/param.h>
	#include <dev/systrace.h>
])
AC_CHECK_DECL([RLIMIT_NPROC],
    [AC_DEFINE([HAVE_RLIMIT_NPROC], [], [sys/resource.h has RLIMIT_NPROC])], , [
	#include <sys/types.h>
	#include <sys/resource.h>
])
AC_CHECK_DECL([PR_SET_NO_NEW_PRIVS], [have_linux_no_new_privs=1], , [
	#include <sys/types.h>
	#include <linux/prctl.h>
])

use_stack_protector=1
use_toolchain_hardening=1
AC_ARG_WITH([stackprotect],
    [  --without-stackprotect  Don't use compiler's stack protection], [
    if test "x$withval" = "xno"; then
	use_stack_protector=0
    fi ])
AC_ARG_WITH([hardening],
    [  --without-hardening     Don't use toolchain hardening flags], [
    if test "x$withval" = "xno"; then
	use_toolchain_hardening=0
    fi ])

# We use -Werror for the tests only so that we catch warnings like "this is
# on by default" for things like -fPIE.
AC_MSG_CHECKING([if $CC supports -Werror])
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int main(void) { return 0; }]])],
	[ AC_MSG_RESULT([yes])
	  WERROR="-Werror"],
	[ AC_MSG_RESULT([no])
	  WERROR="" ]
)
CFLAGS="$saved_CFLAGS"

if test "$GCC" = "yes" || test "$GCC" = "egcs"; then
	OSSH_CHECK_CFLAG_COMPILE([-Qunused-arguments])
	OSSH_CHECK_CFLAG_COMPILE([-Wunknown-warning-option])
	OSSH_CHECK_CFLAG_COMPILE([-Wall])
	OSSH_CHECK_CFLAG_COMPILE([-Wpointer-arith])
	OSSH_CHECK_CFLAG_COMPILE([-Wuninitialized])
	OSSH_CHECK_CFLAG_COMPILE([-Wsign-compare])
	OSSH_CHECK_CFLAG_COMPILE([-Wformat-security])
	OSSH_CHECK_CFLAG_COMPILE([-Wsizeof-pointer-memaccess])
	OSSH_CHECK_CFLAG_COMPILE([-Wpointer-sign], [-Wno-pointer-sign])
	OSSH_CHECK_CFLAG_COMPILE([-Wunused-result], [-Wno-unused-result])
	OSSH_CHECK_CFLAG_COMPILE([-fno-strict-aliasing])
	OSSH_CHECK_CFLAG_COMPILE([-D_FORTIFY_SOURCE=2])
    if test "x$use_toolchain_hardening" = "x1"; then
	OSSH_CHECK_LDFLAG_LINK([-Wl,-z,relro])
	OSSH_CHECK_LDFLAG_LINK([-Wl,-z,now])
	OSSH_CHECK_LDFLAG_LINK([-Wl,-z,noexecstack])
	# NB. -ftrapv expects certain support functions to be present in
	# the compiler library (libgcc or similar) to detect integer operations
	# that can overflow. We must check that the result of enabling it
	# actually links. The test program compiled/linked includes a number
	# of integer operations that should exercise this.
	OSSH_CHECK_CFLAG_LINK([-ftrapv])
    fi
	AC_MSG_CHECKING([gcc version])
	GCC_VER=`$CC -v 2>&1 | $AWK '/gcc version /{print $3}'`
	case $GCC_VER in
		1.*) no_attrib_nonnull=1 ;;
		2.8* | 2.9*)
		     no_attrib_nonnull=1
		     ;;
		2.*) no_attrib_nonnull=1 ;;
		*) ;;
	esac
	AC_MSG_RESULT([$GCC_VER])

	AC_MSG_CHECKING([if $CC accepts -fno-builtin-memset])
	saved_CFLAGS="$CFLAGS"
	CFLAGS="$CFLAGS -fno-builtin-memset"
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <string.h> ]],
			[[ char b[10]; memset(b, 0, sizeof(b)); ]])],
		[ AC_MSG_RESULT([yes]) ],
		[ AC_MSG_RESULT([no])
		  CFLAGS="$saved_CFLAGS" ]
	)

	# -fstack-protector-all doesn't always work for some GCC versions
	# and/or platforms, so we test if we can.  If it's not supported
	# on a given platform gcc will emit a warning so we use -Werror.
	if test "x$use_stack_protector" = "x1"; then
	    for t in -fstack-protector-strong -fstack-protector-all \
		    -fstack-protector; do
		AC_MSG_CHECKING([if $CC supports $t])
		saved_CFLAGS="$CFLAGS"
		saved_LDFLAGS="$LDFLAGS"
		CFLAGS="$CFLAGS $t -Werror"
		LDFLAGS="$LDFLAGS $t -Werror"
		AC_LINK_IFELSE(
			[AC_LANG_PROGRAM([[ #include <stdio.h> ]],
			[[
	char x[256];
	snprintf(x, sizeof(x), "XXX");
			 ]])],
		    [ AC_MSG_RESULT([yes])
		      CFLAGS="$saved_CFLAGS $t"
		      LDFLAGS="$saved_LDFLAGS $t"
		      AC_MSG_CHECKING([if $t works])
		      AC_RUN_IFELSE(
			[AC_LANG_PROGRAM([[ #include <stdio.h> ]],
			[[
	char x[256];
	snprintf(x, sizeof(x), "XXX");
			]])],
			[ AC_MSG_RESULT([yes])
			  break ],
			[ AC_MSG_RESULT([no]) ],
			[ AC_MSG_WARN([cross compiling: cannot test])
			  break ]
		      )
		    ],
		    [ AC_MSG_RESULT([no]) ]
		)
		CFLAGS="$saved_CFLAGS"
		LDFLAGS="$saved_LDFLAGS"
	    done
	fi

	if test -z "$have_llong_max"; then
		# retry LLONG_MAX with -std=gnu99, needed on some Linuxes
		unset ac_cv_have_decl_LLONG_MAX
		saved_CFLAGS="$CFLAGS"
		CFLAGS="$CFLAGS -std=gnu99"
		AC_CHECK_DECL([LLONG_MAX],
		    [have_llong_max=1],
		    [CFLAGS="$saved_CFLAGS"],
		    [#include <limits.h>]
		)
	fi
fi

AC_MSG_CHECKING([if compiler allows __attribute__ on return types])
AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM([[
#include <stdlib.h>
__attribute__((__unused__)) static void foo(void){return;}]],
    [[ exit(0); ]])],
    [ AC_MSG_RESULT([yes]) ],
    [ AC_MSG_RESULT([no])
      AC_DEFINE(NO_ATTRIBUTE_ON_RETURN_TYPE, 1,
	 [compiler does not accept __attribute__ on return types]) ]
)

if test "x$no_attrib_nonnull" != "x1" ; then
	AC_DEFINE([HAVE_ATTRIBUTE__NONNULL__], [1], [Have attribute nonnull])
fi

AC_ARG_WITH([rpath],
	[  --without-rpath         Disable auto-added -R linker paths],
	[
		if test "x$withval" = "xno" ; then
			need_dash_r=""
		fi
		if test "x$withval" = "xyes" ; then
			need_dash_r=1
		fi
	]
)

# Allow user to specify flags
AC_ARG_WITH([cflags],
	[  --with-cflags           Specify additional flags to pass to compiler],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			CFLAGS="$CFLAGS $withval"
		fi
	]
)
AC_ARG_WITH([cppflags],
	[  --with-cppflags         Specify additional flags to pass to preprocessor] ,
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			CPPFLAGS="$CPPFLAGS $withval"
		fi
	]
)
AC_ARG_WITH([ldflags],
	[  --with-ldflags          Specify additional flags to pass to linker],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			LDFLAGS="$LDFLAGS $withval"
		fi
	]
)
AC_ARG_WITH([libs],
	[  --with-libs             Specify additional libraries to link with],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			LIBS="$LIBS $withval"
		fi
	]
)
AC_ARG_WITH([Werror],
	[  --with-Werror           Build main code with -Werror],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"; then
			werror_flags="-Werror"
			if test "x${withval}" != "xyes"; then
				werror_flags="$withval"
			fi
		fi
	]
)

AC_CHECK_HEADERS([ \
	blf.h \
	bstring.h \
	crypt.h \
	crypto/sha2.h \
	dirent.h \
	endian.h \
	elf.h \
	features.h \
	fcntl.h \
	floatingpoint.h \
	getopt.h \
	glob.h \
	ia.h \
	iaf.h \
	inttypes.h \
	limits.h \
	locale.h \
	login.h \
	maillock.h \
	ndir.h \
	net/if_tun.h \
	netdb.h \
	netgroup.h \
	pam/pam_appl.h \
	paths.h \
	poll.h \
	pty.h \
	readpassphrase.h \
	rpc/types.h \
	security/pam_appl.h \
	sha2.h \
	shadow.h \
	stddef.h \
	stdint.h \
	string.h \
	strings.h \
	sys/audit.h \
	sys/bitypes.h \
	sys/bsdtty.h \
	sys/capability.h \
	sys/cdefs.h \
	sys/dir.h \
	sys/mman.h \
	sys/ndir.h \
	sys/poll.h \
	sys/prctl.h \
	sys/pstat.h \
	sys/select.h \
	sys/stat.h \
	sys/stream.h \
	sys/stropts.h \
	sys/strtio.h \
	sys/statvfs.h \
	sys/sysmacros.h \
	sys/time.h \
	sys/timers.h \
	time.h \
	tmpdir.h \
	ttyent.h \
	ucred.h \
	unistd.h \
	usersec.h \
	util.h \
	utime.h \
	utmp.h \
	utmpx.h \
	vis.h \
])

# lastlog.h requires sys/time.h to be included first on Solaris
AC_CHECK_HEADERS([lastlog.h], [], [], [
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
])

# sys/ptms.h requires sys/stream.h to be included first on Solaris
AC_CHECK_HEADERS([sys/ptms.h], [], [], [
#ifdef HAVE_SYS_STREAM_H
# include <sys/stream.h>
#endif
])

# login_cap.h requires sys/types.h on NetBSD
AC_CHECK_HEADERS([login_cap.h], [], [], [
#include <sys/types.h>
])

# older BSDs need sys/param.h before sys/mount.h
AC_CHECK_HEADERS([sys/mount.h], [], [], [
#include <sys/param.h>
])

# Android requires sys/socket.h to be included before sys/un.h
AC_CHECK_HEADERS([sys/un.h], [], [], [
#include <sys/types.h>
#include <sys/socket.h>
])

# Messages for features tested for in target-specific section
SIA_MSG="no"
SPC_MSG="no"
SP_MSG="no"

# Check for some target-specific stuff
case "$host" in
*-*-aix*)
	# Some versions of VAC won't allow macro redefinitions at
	# -qlanglevel=ansi, and autoconf 2.60 sometimes insists on using that
	# particularly with older versions of vac or xlc.
	# It also throws errors about null macro argments, but these are
	# not fatal.
	AC_MSG_CHECKING([if compiler allows macro redefinitions])
	AC_COMPILE_IFELSE(
	    [AC_LANG_PROGRAM([[
#define testmacro foo
#define testmacro bar]],
	    [[ exit(0); ]])],
	    [ AC_MSG_RESULT([yes]) ],
	    [ AC_MSG_RESULT([no])
	      CC="`echo $CC | sed 's/-qlanglvl\=ansi//g'`"
	      LD="`echo $LD | sed 's/-qlanglvl\=ansi//g'`"
	      CFLAGS="`echo $CFLAGS | sed 's/-qlanglvl\=ansi//g'`"
	      CPPFLAGS="`echo $CPPFLAGS | sed 's/-qlanglvl\=ansi//g'`"
	    ]
	)

	AC_MSG_CHECKING([how to specify blibpath for linker ($LD)])
	if (test -z "$blibpath"); then
		blibpath="/usr/lib:/lib"
	fi
	saved_LDFLAGS="$LDFLAGS"
	if test "$GCC" = "yes"; then
		flags="-Wl,-blibpath: -Wl,-rpath, -blibpath:"
	else
		flags="-blibpath: -Wl,-blibpath: -Wl,-rpath,"
	fi
	for tryflags in $flags ;do
		if (test -z "$blibflags"); then
			LDFLAGS="$saved_LDFLAGS $tryflags$blibpath"
			AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
			[blibflags=$tryflags], [])
		fi
	done
	if (test -z "$blibflags"); then
		AC_MSG_RESULT([not found])
		AC_MSG_ERROR([*** must be able to specify blibpath on AIX - check config.log])
	else
		AC_MSG_RESULT([$blibflags])
	fi
	LDFLAGS="$saved_LDFLAGS"
	dnl Check for authenticate.  Might be in libs.a on older AIXes
	AC_CHECK_FUNC([authenticate], [AC_DEFINE([WITH_AIXAUTHENTICATE], [1],
		[Define if you want to enable AIX4's authenticate function])],
		[AC_CHECK_LIB([s], [authenticate],
			[ AC_DEFINE([WITH_AIXAUTHENTICATE])
				LIBS="$LIBS -ls"
			])
		])
	dnl Check for various auth function declarations in headers.
	AC_CHECK_DECLS([authenticate, loginrestrictions, loginsuccess,
	    passwdexpired, setauthdb], , , [#include <usersec.h>])
	dnl Check if loginfailed is declared and takes 4 arguments (AIX >= 5.2)
	AC_CHECK_DECLS([loginfailed],
	    [AC_MSG_CHECKING([if loginfailed takes 4 arguments])
	    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <usersec.h> ]],
		[[ (void)loginfailed("user","host","tty",0); ]])],
		[AC_MSG_RESULT([yes])
		AC_DEFINE([AIX_LOGINFAILED_4ARG], [1],
			[Define if your AIX loginfailed() function
			takes 4 arguments (AIX >= 5.2)])], [AC_MSG_RESULT([no])
	    ])],
	    [],
	    [#include <usersec.h>]
	)
	AC_CHECK_FUNCS([getgrset setauthdb])
	AC_CHECK_DECL([F_CLOSEM],
	    AC_DEFINE([HAVE_FCNTL_CLOSEM], [1], [Use F_CLOSEM fcntl for closefrom]),
	    [],
	    [ #include <limits.h>
	      #include <fcntl.h> ]
	)
	check_for_aix_broken_getaddrinfo=1
	AC_DEFINE([BROKEN_REALPATH], [1], [Define if you have a broken realpath.])
	AC_DEFINE([SETEUID_BREAKS_SETUID], [1],
	    [Define if your platform breaks doing a seteuid before a setuid])
	AC_DEFINE([BROKEN_SETREUID], [1], [Define if your setreuid() is broken])
	AC_DEFINE([BROKEN_SETREGID], [1], [Define if your setregid() is broken])
	dnl AIX handles lastlog as part of its login message
	AC_DEFINE([DISABLE_LASTLOG], [1], [Define if you don't want to use lastlog])
	AC_DEFINE([LOGIN_NEEDS_UTMPX], [1],
		[Some systems need a utmpx entry for /bin/login to work])
	AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV],
		[Define to a Set Process Title type if your system is
		supported by bsd-setproctitle.c])
	AC_DEFINE([SSHPAM_CHAUTHTOK_NEEDS_RUID], [1],
	    [AIX 5.2 and 5.3 (and presumably newer) require this])
	AC_DEFINE([PTY_ZEROREAD], [1], [read(1) can return 0 for a non-closed fd])
	AC_DEFINE([PLATFORM_SYS_DIR_UID], 2, [System dirs owned by bin (uid 2)])
	;;
*-*-android*)
	AC_DEFINE([DISABLE_UTMP], [1], [Define if you don't want to use utmp])
	AC_DEFINE([DISABLE_WTMP], [1], [Define if you don't want to use wtmp])
	;;
*-*-cygwin*)
	check_for_libcrypt_later=1
	LIBS="$LIBS /usr/lib/textreadmode.o"
	AC_DEFINE([HAVE_CYGWIN], [1], [Define if you are on Cygwin])
	AC_DEFINE([USE_PIPES], [1], [Use PIPES instead of a socketpair()])
	AC_DEFINE([DISABLE_SHADOW], [1],
		[Define if you want to disable shadow passwords])
	AC_DEFINE([NO_X11_UNIX_SOCKETS], [1],
		[Define if X11 doesn't support AF_UNIX sockets on that system])
	AC_DEFINE([NO_IPPORT_RESERVED_CONCEPT], [1],
		[Define if the concept of ports only accessible to
		superusers isn't known])
	AC_DEFINE([DISABLE_FD_PASSING], [1],
		[Define if your platform needs to skip post auth
		file descriptor passing])
	AC_DEFINE([SSH_IOBUFSZ], [65535], [Windows is sensitive to read buffer size])
	AC_DEFINE([FILESYSTEM_NO_BACKSLASH], [1], [File names may not contain backslash characters])
	# Cygwin defines optargs, optargs as declspec(dllimport) for historical
	# reasons which cause compile warnings, so we disable those warnings.
	OSSH_CHECK_CFLAG_COMPILE([-Wno-attributes])
	;;
*-*-dgux*)
	AC_DEFINE([IP_TOS_IS_BROKEN], [1],
		[Define if your system choked on IP TOS setting])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	;;
*-*-darwin*)
	use_pie=auto
	AC_MSG_CHECKING([if we have working getaddrinfo])
	AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include <mach-o/dyld.h>
main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
		exit(0);
	else
		exit(1);
}
			]])],
	[AC_MSG_RESULT([working])],
	[AC_MSG_RESULT([buggy])
	AC_DEFINE([BROKEN_GETADDRINFO], [1],
		[getaddrinfo is broken (if present)])
	],
	[AC_MSG_RESULT([assume it is working])])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([BROKEN_GLOB], [1], [OS X glob does not do what we expect])
	AC_DEFINE_UNQUOTED([BIND_8_COMPAT], [1],
		[Define if your resolver libs need this for getrrsetbyname])
	AC_DEFINE([SSH_TUN_FREEBSD], [1], [Open tunnel devices the FreeBSD way])
	AC_DEFINE([SSH_TUN_COMPAT_AF], [1],
	    [Use tunnel device compatibility to OpenBSD])
	AC_DEFINE([SSH_TUN_PREPEND_AF], [1],
	    [Prepend the address family to IP tunnel traffic])
	m4_pattern_allow([AU_IPv])
	AC_CHECK_DECL([AU_IPv4], [], 
	    AC_DEFINE([AU_IPv4], [0], [System only supports IPv4 audit records])
	    [#include <bsm/audit.h>]
	AC_DEFINE([LASTLOG_WRITE_PUTUTXLINE], [1],
	    [Define if pututxline updates lastlog too])
	)
	AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV],
		[Define to a Set Process Title type if your system is
		supported by bsd-setproctitle.c])
	AC_CHECK_FUNCS([sandbox_init])
	AC_CHECK_HEADERS([sandbox.h])
	;;
*-*-dragonfly*)
	SSHDLIBS="$SSHDLIBS -lcrypt"
	TEST_MALLOC_OPTIONS="AFGJPRX"
	;;
*-*-haiku*) 
    LIBS="$LIBS -lbsd "
    AC_CHECK_LIB([network], [socket])
    AC_DEFINE([HAVE_U_INT64_T])
    MANTYPE=man 
    ;; 
*-*-hpux*)
	# first we define all of the options common to all HP-UX releases
	CPPFLAGS="$CPPFLAGS -D_HPUX_SOURCE -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1"
	IPADDR_IN_DISPLAY=yes
	AC_DEFINE([USE_PIPES])
	AC_DEFINE([LOGIN_NO_ENDOPT], [1],
	    [Define if your login program cannot handle end of options ("--")])
	AC_DEFINE([LOGIN_NEEDS_UTMPX])
	AC_DEFINE([LOCKED_PASSWD_STRING], ["*"],
		[String used in /etc/passwd to denote locked account])
	AC_DEFINE([SPT_TYPE], [SPT_PSTAT])
	AC_DEFINE([PLATFORM_SYS_DIR_UID], 2, [System dirs owned by bin (uid 2)])
	maildir="/var/mail"
	LIBS="$LIBS -lsec"
	AC_CHECK_LIB([xnet], [t_error], ,
	    [AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***])])

	# next, we define all of the options specific to major releases
	case "$host" in
	*-*-hpux10*)
		if test -z "$GCC"; then
			CFLAGS="$CFLAGS -Ae"
		fi
		;;
	*-*-hpux11*)
		AC_DEFINE([PAM_SUN_CODEBASE], [1],
			[Define if you are using Solaris-derived PAM which
			passes pam_messages to the conversation function
			with an extra level of indirection])
		AC_DEFINE([DISABLE_UTMP], [1],
			[Define if you don't want to use utmp])
		AC_DEFINE([USE_BTMP], [1], [Use btmp to log bad logins])
		check_for_hpux_broken_getaddrinfo=1
		check_for_conflicting_getspnam=1
		;;
	esac

	# lastly, we define options specific to minor releases
	case "$host" in
	*-*-hpux10.26)
		AC_DEFINE([HAVE_SECUREWARE], [1],
			[Define if you have SecureWare-based
			protected password database])
		disable_ptmx_check=yes
		LIBS="$LIBS -lsecpw"
		;;
	esac
	;;
*-*-irix5*)
	PATH="$PATH:/usr/etc"
	AC_DEFINE([BROKEN_INET_NTOA], [1],
		[Define if you system's inet_ntoa is busted
		(e.g. Irix gcc issue)])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([WITH_ABBREV_NO_TTY], [1],
		[Define if you shouldn't strip 'tty' from your
		ttyname in [uw]tmp])
	AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"])
	;;
*-*-irix6*)
	PATH="$PATH:/usr/etc"
	AC_DEFINE([WITH_IRIX_ARRAY], [1],
		[Define if you have/want arrays
		(cluster-wide session managment, not C arrays)])
	AC_DEFINE([WITH_IRIX_PROJECT], [1],
		[Define if you want IRIX project management])
	AC_DEFINE([WITH_IRIX_AUDIT], [1],
		[Define if you want IRIX audit trails])
	AC_CHECK_FUNC([jlimit_startjob], [AC_DEFINE([WITH_IRIX_JOBS], [1],
		[Define if you want IRIX kernel jobs])])
	AC_DEFINE([BROKEN_INET_NTOA])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([BROKEN_UPDWTMPX], [1], [updwtmpx is broken (if present)])
	AC_DEFINE([WITH_ABBREV_NO_TTY])
	AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"])
	;;
*-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
	check_for_libcrypt_later=1
	AC_DEFINE([PAM_TTY_KLUDGE])
	AC_DEFINE([LOCKED_PASSWD_PREFIX], ["!"])
	AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV])
	AC_DEFINE([_PATH_BTMP], ["/var/log/btmp"], [log for bad login attempts])
	AC_DEFINE([USE_BTMP], [1], [Use btmp to log bad logins])
	;;
*-*-linux*)
	no_dev_ptmx=1
	use_pie=auto
	check_for_libcrypt_later=1
	check_for_openpty_ctty_bug=1
	AC_DEFINE([PAM_TTY_KLUDGE], [1],
		[Work around problematic Linux PAM modules handling of PAM_TTY])
	AC_DEFINE([LOCKED_PASSWD_PREFIX], ["!"],
		[String used in /etc/passwd to denote locked account])
	AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV])
	AC_DEFINE([LINK_OPNOTSUPP_ERRNO], [EPERM],
		[Define to whatever link() returns for "not supported"
		if it doesn't return EOPNOTSUPP.])
	AC_DEFINE([_PATH_BTMP], ["/var/log/btmp"], [log for bad login attempts])
	AC_DEFINE([USE_BTMP])
	AC_DEFINE([LINUX_OOM_ADJUST], [1], [Adjust Linux out-of-memory killer])
	inet6_default_4in6=yes
	case `uname -r` in
	1.*|2.0.*)
		AC_DEFINE([BROKEN_CMSG_TYPE], [1],
			[Define if cmsg_type is not passed correctly])
		;;
	esac
	# tun(4) forwarding compat code
	AC_CHECK_HEADERS([linux/if_tun.h])
	if test "x$ac_cv_header_linux_if_tun_h" = "xyes" ; then
		AC_DEFINE([SSH_TUN_LINUX], [1],
		    [Open tunnel devices the Linux tun/tap way])
		AC_DEFINE([SSH_TUN_COMPAT_AF], [1],
		    [Use tunnel device compatibility to OpenBSD])
		AC_DEFINE([SSH_TUN_PREPEND_AF], [1],
		    [Prepend the address family to IP tunnel traffic])
	fi
	AC_CHECK_HEADERS([linux/seccomp.h linux/filter.h linux/audit.h], [],
	    [], [#include <linux/types.h>])
	AC_CHECK_FUNCS([prctl])
	AC_MSG_CHECKING([for seccomp architecture])
	seccomp_audit_arch=
	case "$host" in
	x86_64-*)
		seccomp_audit_arch=AUDIT_ARCH_X86_64
		;;
	i*86-*)
		seccomp_audit_arch=AUDIT_ARCH_I386
		;;
        arm*-*)
		seccomp_audit_arch=AUDIT_ARCH_ARM
                ;;
	esac
	if test "x$seccomp_audit_arch" != "x" ; then
		AC_MSG_RESULT(["$seccomp_audit_arch"])
                AC_DEFINE_UNQUOTED([SECCOMP_AUDIT_ARCH], [$seccomp_audit_arch],
                    [Specify the system call convention in use])
	else
		AC_MSG_RESULT([architecture not supported])
	fi
	;;
mips-sony-bsd|mips-sony-newsos4)
	AC_DEFINE([NEED_SETPGRP], [1], [Need setpgrp to acquire controlling tty])
	SONY=1
	;;
*-*-netbsd*)
	check_for_libcrypt_before=1
	if test "x$withval" != "xno" ; then
		need_dash_r=1
	fi
	AC_DEFINE([SSH_TUN_FREEBSD], [1], [Open tunnel devices the FreeBSD way])
	AC_CHECK_HEADER([net/if_tap.h], ,
	    AC_DEFINE([SSH_TUN_NO_L2], [1], [No layer 2 tunnel support]))
	AC_DEFINE([SSH_TUN_PREPEND_AF], [1],
	    [Prepend the address family to IP tunnel traffic])
	TEST_MALLOC_OPTIONS="AJRX"
	AC_DEFINE([BROKEN_STRNVIS], [1],
	    [NetBSD strnvis argument order is swapped compared to OpenBSD])
	AC_DEFINE([BROKEN_READ_COMPARISON], [1],
	    [NetBSD read function is sometimes redirected, breaking atomicio comparisons against it])
	;;
*-*-freebsd*)
	check_for_libcrypt_later=1
	AC_DEFINE([LOCKED_PASSWD_PREFIX], ["*LOCKED*"], [Account locked with pw(1)])
	AC_DEFINE([SSH_TUN_FREEBSD], [1], [Open tunnel devices the FreeBSD way])
	AC_CHECK_HEADER([net/if_tap.h], ,
	    AC_DEFINE([SSH_TUN_NO_L2], [1], [No layer 2 tunnel support]))
	AC_DEFINE([BROKEN_GLOB], [1], [FreeBSD glob does not do what we need])
	AC_DEFINE([BROKEN_STRNVIS], [1],
	    [FreeBSD strnvis argument order is swapped compared to OpenBSD])
	TEST_MALLOC_OPTIONS="AJRX"
	# Preauth crypto occasionally uses file descriptors for crypto offload
	# and will crash if they cannot be opened.
	AC_DEFINE([SANDBOX_SKIP_RLIMIT_NOFILE], [1],
	    [define if setrlimit RLIMIT_NOFILE breaks things])
	;;
*-*-bsdi*)
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	;;
*-next-*)
	conf_lastlog_location="/usr/adm/lastlog"
	conf_utmp_location=/etc/utmp
	conf_wtmp_location=/usr/adm/wtmp
	maildir=/usr/spool/mail
	AC_DEFINE([HAVE_NEXT], [1], [Define if you are on NeXT])
	AC_DEFINE([BROKEN_REALPATH])
	AC_DEFINE([USE_PIPES])
	AC_DEFINE([BROKEN_SAVED_UIDS], [1], [Needed for NeXT])
	;;
*-*-openbsd*)
	use_pie=auto
	AC_DEFINE([HAVE_ATTRIBUTE__SENTINEL__], [1], [OpenBSD's gcc has sentinel])
	AC_DEFINE([HAVE_ATTRIBUTE__BOUNDED__], [1], [OpenBSD's gcc has bounded])
	AC_DEFINE([SSH_TUN_OPENBSD], [1], [Open tunnel devices the OpenBSD way])
	AC_DEFINE([SYSLOG_R_SAFE_IN_SIGHAND], [1],
	    [syslog_r function is safe to use in in a signal handler])
	TEST_MALLOC_OPTIONS="AFGJPRX"
	;;
*-*-solaris*)
	if test "x$withval" != "xno" ; then
		need_dash_r=1
	fi
	AC_DEFINE([PAM_SUN_CODEBASE])
	AC_DEFINE([LOGIN_NEEDS_UTMPX])
	AC_DEFINE([LOGIN_NEEDS_TERM], [1],
		[Some versions of /bin/login need the TERM supplied
		on the commandline])
	AC_DEFINE([PAM_TTY_KLUDGE])
	AC_DEFINE([SSHPAM_CHAUTHTOK_NEEDS_RUID], [1],
		[Define if pam_chauthtok wants real uid set
		to the unpriv'ed user])
	AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"])
	# Pushing STREAMS modules will cause sshd to acquire a controlling tty.
	AC_DEFINE([SSHD_ACQUIRES_CTTY], [1],
		[Define if sshd somehow reacquires a controlling TTY
		after setsid()])
	AC_DEFINE([PASSWD_NEEDS_USERNAME], [1], [must supply username to passwd
		in case the name is longer than 8 chars])
	AC_DEFINE([BROKEN_TCGETATTR_ICANON], [1], [tcgetattr with ICANON may hang])
	external_path_file=/etc/default/login
	# hardwire lastlog location (can't detect it on some versions)
	conf_lastlog_location="/var/adm/lastlog"
	AC_MSG_CHECKING([for obsolete utmp and wtmp in solaris2.x])
	sol2ver=`echo "$host"| sed -e 's/.*[[0-9]]\.//'`
	if test "$sol2ver" -ge 8; then
		AC_MSG_RESULT([yes])
		AC_DEFINE([DISABLE_UTMP])
		AC_DEFINE([DISABLE_WTMP], [1],
			[Define if you don't want to use wtmp])
	else
		AC_MSG_RESULT([no])
	fi
	AC_ARG_WITH([solaris-contracts],
		[  --with-solaris-contracts Enable Solaris process contracts (experimental)],
		[
		AC_CHECK_LIB([contract], [ct_tmpl_activate],
			[ AC_DEFINE([USE_SOLARIS_PROCESS_CONTRACTS], [1],
				[Define if you have Solaris process contracts])
			  SSHDLIBS="$SSHDLIBS -lcontract"
			  SPC_MSG="yes" ], )
		],
	)
	AC_ARG_WITH([solaris-projects],
		[  --with-solaris-projects Enable Solaris projects (experimental)],
		[
		AC_CHECK_LIB([project], [setproject],
			[ AC_DEFINE([USE_SOLARIS_PROJECTS], [1],
				[Define if you have Solaris projects])
			SSHDLIBS="$SSHDLIBS -lproject"
			SP_MSG="yes" ], )
		],
	)
	TEST_SHELL=$SHELL	# let configure find us a capable shell
	;;
*-*-sunos4*)
	CPPFLAGS="$CPPFLAGS -DSUNOS4"
	AC_CHECK_FUNCS([getpwanam])
	AC_DEFINE([PAM_SUN_CODEBASE])
	conf_utmp_location=/etc/utmp
	conf_wtmp_location=/var/adm/wtmp
	conf_lastlog_location=/var/adm/lastlog
	AC_DEFINE([USE_PIPES])
	;;
*-ncr-sysv*)
	LIBS="$LIBS -lc89"
	AC_DEFINE([USE_PIPES])
	AC_DEFINE([SSHD_ACQUIRES_CTTY])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	;;
*-sni-sysv*)
	# /usr/ucblib MUST NOT be searched on ReliantUNIX
	AC_CHECK_LIB([dl], [dlsym], ,)
	# -lresolv needs to be at the end of LIBS or DNS lookups break
	AC_CHECK_LIB([resolv], [res_query], [ LIBS="$LIBS -lresolv" ])
	IPADDR_IN_DISPLAY=yes
	AC_DEFINE([USE_PIPES])
	AC_DEFINE([IP_TOS_IS_BROKEN])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([SSHD_ACQUIRES_CTTY])
	external_path_file=/etc/default/login
	# /usr/ucblib/libucb.a no longer needed on ReliantUNIX
	# Attention: always take care to bind libsocket and libnsl before libc,
	# otherwise you will find lots of "SIOCGPGRP errno 22" on syslog
	;;
# UnixWare 1.x, UnixWare 2.x, and others based on code from Univel.
*-*-sysv4.2*)
	AC_DEFINE([USE_PIPES])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([PASSWD_NEEDS_USERNAME], [1], [must supply username to passwd])
	AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"])
	TEST_SHELL=$SHELL	# let configure find us a capable shell
	;;
# UnixWare 7.x, OpenUNIX 8
*-*-sysv5*)
	CPPFLAGS="$CPPFLAGS -Dvsnprintf=_xvsnprintf -Dsnprintf=_xsnprintf"
	AC_DEFINE([UNIXWARE_LONG_PASSWORDS], [1], [Support passwords > 8 chars])
	AC_DEFINE([USE_PIPES])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_GETADDRINFO])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([PASSWD_NEEDS_USERNAME])
	TEST_SHELL=$SHELL	# let configure find us a capable shell
	case "$host" in
	*-*-sysv5SCO_SV*)	# SCO OpenServer 6.x
		maildir=/var/spool/mail
		AC_DEFINE([BROKEN_LIBIAF], [1],
			[ia_uinfo routines not supported by OS yet])
		AC_DEFINE([BROKEN_UPDWTMPX])
		AC_CHECK_LIB([prot], [getluid], [ LIBS="$LIBS -lprot"
			AC_CHECK_FUNCS([getluid setluid], , , [-lprot])
			AC_DEFINE([HAVE_SECUREWARE])
			AC_DEFINE([DISABLE_SHADOW])
			], , )
		;;
	*)	AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"])
		check_for_libcrypt_later=1
		;;
	esac
	;;
*-*-sysv*)
	;;
# SCO UNIX and OEM versions of SCO UNIX
*-*-sco3.2v4*)
	AC_MSG_ERROR("This Platform is no longer supported.")
	;;
# SCO OpenServer 5.x
*-*-sco3.2v5*)
	if test -z "$GCC"; then
		CFLAGS="$CFLAGS -belf"
	fi
	LIBS="$LIBS -lprot -lx -ltinfo -lm"
	no_dev_ptmx=1
	AC_DEFINE([USE_PIPES])
	AC_DEFINE([HAVE_SECUREWARE])
	AC_DEFINE([DISABLE_SHADOW])
	AC_DEFINE([DISABLE_FD_PASSING])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_GETADDRINFO])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([WITH_ABBREV_NO_TTY])
	AC_DEFINE([BROKEN_UPDWTMPX])
	AC_DEFINE([PASSWD_NEEDS_USERNAME])
	AC_CHECK_FUNCS([getluid setluid])
	MANTYPE=man
	TEST_SHELL=$SHELL	# let configure find us a capable shell
	SKIP_DISABLE_LASTLOG_DEFINE=yes
	;;
*-*-unicosmk*)
	AC_DEFINE([NO_SSH_LASTLOG], [1],
		[Define if you don't want to use lastlog in session.c])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([USE_PIPES])
	AC_DEFINE([DISABLE_FD_PASSING])
	LDFLAGS="$LDFLAGS"
	LIBS="$LIBS -lgen -lrsc -lshare -luex -lacm"
	MANTYPE=cat
	;;
*-*-unicosmp*)
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([WITH_ABBREV_NO_TTY])
	AC_DEFINE([USE_PIPES])
	AC_DEFINE([DISABLE_FD_PASSING])
	LDFLAGS="$LDFLAGS"
	LIBS="$LIBS -lgen -lacid -ldb"
	MANTYPE=cat
	;;
*-*-unicos*)
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([USE_PIPES])
	AC_DEFINE([DISABLE_FD_PASSING])
	AC_DEFINE([NO_SSH_LASTLOG])
	LDFLAGS="$LDFLAGS -Wl,-Dmsglevel=334:fatal"
	LIBS="$LIBS -lgen -lrsc -lshare -luex -lacm"
	MANTYPE=cat
	;;
*-dec-osf*)
	AC_MSG_CHECKING([for Digital Unix SIA])
	no_osfsia=""
	AC_ARG_WITH([osfsia],
		[  --with-osfsia           Enable Digital Unix SIA],
		[
			if test "x$withval" = "xno" ; then
				AC_MSG_RESULT([disabled])
				no_osfsia=1
			fi
		],
	)
	if test -z "$no_osfsia" ; then
		if test -f /etc/sia/matrix.conf; then
			AC_MSG_RESULT([yes])
			AC_DEFINE([HAVE_OSF_SIA], [1],
				[Define if you have Digital Unix Security
				Integration Architecture])
			AC_DEFINE([DISABLE_LOGIN], [1],
				[Define if you don't want to use your
				system's login() call])
			AC_DEFINE([DISABLE_FD_PASSING])
			LIBS="$LIBS -lsecurity -ldb -lm -laud"
			SIA_MSG="yes"
		else
			AC_MSG_RESULT([no])
			AC_DEFINE([LOCKED_PASSWD_SUBSTR], ["Nologin"],
			  [String used in /etc/passwd to denote locked account])
		fi
	fi
	AC_DEFINE([BROKEN_GETADDRINFO])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([BROKEN_READV_COMPARISON], [1], [Can't do comparisons on readv])
	;;

*-*-nto-qnx*)
	AC_DEFINE([USE_PIPES])
	AC_DEFINE([NO_X11_UNIX_SOCKETS])
	AC_DEFINE([DISABLE_LASTLOG])
	AC_DEFINE([SSHD_ACQUIRES_CTTY])
	AC_DEFINE([BROKEN_SHADOW_EXPIRE], [1], [QNX shadow support is broken])
	enable_etc_default_login=no	# has incompatible /etc/default/login
	case "$host" in
	*-*-nto-qnx6*)
		AC_DEFINE([DISABLE_FD_PASSING])
		;;
	esac
	;;

*-*-ultrix*)
	AC_DEFINE([BROKEN_GETGROUPS], [1], [getgroups(0,NULL) will return -1])
	AC_DEFINE([BROKEN_MMAP], [1], [Ultrix mmap can't map files])
	AC_DEFINE([NEED_SETPGRP])
	AC_DEFINE([HAVE_SYS_SYSLOG_H], [1], [Force use of sys/syslog.h on Ultrix])
	;;

*-*-lynxos)
        CFLAGS="$CFLAGS -D__NO_INCLUDE_WARN__"
        AC_DEFINE([BROKEN_SETVBUF], [1], [LynxOS has broken setvbuf() implementation])
        ;;
esac

AC_MSG_CHECKING([compiler and flags for sanity])
AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include <stdio.h> ]], [[ exit(0); ]])],
	[	AC_MSG_RESULT([yes]) ],
	[
		AC_MSG_RESULT([no])
		AC_MSG_ERROR([*** compiler cannot create working executables, check config.log ***])
	],
	[	AC_MSG_WARN([cross compiling: not checking compiler sanity]) ]
)

dnl Checks for header files.
# Checks for libraries.
AC_CHECK_FUNC([yp_match], , [AC_CHECK_LIB([nsl], [yp_match])])
AC_CHECK_FUNC([setsockopt], , [AC_CHECK_LIB([socket], [setsockopt])])

dnl IRIX and Solaris 2.5.1 have dirname() in libgen
AC_CHECK_FUNCS([dirname], [AC_CHECK_HEADERS([libgen.h])] , [
	AC_CHECK_LIB([gen], [dirname], [
		AC_CACHE_CHECK([for broken dirname],
			ac_cv_have_broken_dirname, [
			save_LIBS="$LIBS"
			LIBS="$LIBS -lgen"
			AC_RUN_IFELSE(
				[AC_LANG_SOURCE([[
#include <libgen.h>
#include <string.h>

int main(int argc, char **argv) {
    char *s, buf[32];

    strncpy(buf,"/etc", 32);
    s = dirname(buf);
    if (!s || strncmp(s, "/", 32) != 0) {
	exit(1);
    } else {
	exit(0);
    }
}
				]])],
				[ ac_cv_have_broken_dirname="no" ],
				[ ac_cv_have_broken_dirname="yes" ],
				[ ac_cv_have_broken_dirname="no" ],
			)
			LIBS="$save_LIBS"
		])
		if test "x$ac_cv_have_broken_dirname" = "xno" ; then
			LIBS="$LIBS -lgen"
			AC_DEFINE([HAVE_DIRNAME])
			AC_CHECK_HEADERS([libgen.h])
		fi
	])
])

AC_CHECK_FUNC([getspnam], ,
	[AC_CHECK_LIB([gen], [getspnam], [LIBS="$LIBS -lgen"])])
AC_SEARCH_LIBS([basename], [gen], [AC_DEFINE([HAVE_BASENAME], [1],
	[Define if you have the basename function.])])

dnl zlib is required
AC_ARG_WITH([zlib],
	[  --with-zlib=PATH        Use zlib in PATH],
	[ if test "x$withval" = "xno" ; then
		AC_MSG_ERROR([*** zlib is required ***])
	  elif test "x$withval" != "xyes"; then
		if test -d "$withval/lib"; then
			if test -n "${need_dash_r}"; then
				LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
			else
				LDFLAGS="-L${withval}/lib ${LDFLAGS}"
			fi
		else
			if test -n "${need_dash_r}"; then
				LDFLAGS="-L${withval} -R${withval} ${LDFLAGS}"
			else
				LDFLAGS="-L${withval} ${LDFLAGS}"
			fi
		fi
		if test -d "$withval/include"; then
			CPPFLAGS="-I${withval}/include ${CPPFLAGS}"
		else
			CPPFLAGS="-I${withval} ${CPPFLAGS}"
		fi
	fi ]
)

AC_CHECK_HEADER([zlib.h], ,[AC_MSG_ERROR([*** zlib.h missing - please install first or check config.log ***])])
AC_CHECK_LIB([z], [deflate], ,
	[
		saved_CPPFLAGS="$CPPFLAGS"
		saved_LDFLAGS="$LDFLAGS"
		save_LIBS="$LIBS"
		dnl Check default zlib install dir
		if test -n "${need_dash_r}"; then
			LDFLAGS="-L/usr/local/lib -R/usr/local/lib ${saved_LDFLAGS}"
		else
			LDFLAGS="-L/usr/local/lib ${saved_LDFLAGS}"
		fi
		CPPFLAGS="-I/usr/local/include ${saved_CPPFLAGS}"
		LIBS="$LIBS -lz"
		AC_TRY_LINK_FUNC([deflate], [AC_DEFINE([HAVE_LIBZ])],
			[
				AC_MSG_ERROR([*** zlib missing - please install first or check config.log ***])
			]
		)
	]
)

AC_ARG_WITH([zlib-version-check],
	[  --without-zlib-version-check Disable zlib version check],
	[  if test "x$withval" = "xno" ; then
		zlib_check_nonfatal=1
	   fi
	]
)

AC_MSG_CHECKING([for possibly buggy zlib])
AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <stdio.h>
#include <stdlib.h>
#include <zlib.h>
	]],
	[[
	int a=0, b=0, c=0, d=0, n, v;
	n = sscanf(ZLIB_VERSION, "%d.%d.%d.%d", &a, &b, &c, &d);
	if (n != 3 && n != 4)
		exit(1);
	v = a*1000000 + b*10000 + c*100 + d;
	fprintf(stderr, "found zlib version %s (%d)\n", ZLIB_VERSION, v);

	/* 1.1.4 is OK */
	if (a == 1 && b == 1 && c >= 4)
		exit(0);

	/* 1.2.3 and up are OK */
	if (v >= 1020300)
		exit(0);

	exit(2);
	]])],
	AC_MSG_RESULT([no]),
	[ AC_MSG_RESULT([yes])
	  if test -z "$zlib_check_nonfatal" ; then
		AC_MSG_ERROR([*** zlib too old - check config.log ***
Your reported zlib version has known security problems.  It's possible your
vendor has fixed these problems without changing the version number.  If you
are sure this is the case, you can disable the check by running
"./configure --without-zlib-version-check".
If you are in doubt, upgrade zlib to version 1.2.3 or greater.
See http://www.gzip.org/zlib/ for details.])
	  else
		AC_MSG_WARN([zlib version may have security problems])
	  fi
	],
	[	AC_MSG_WARN([cross compiling: not checking zlib version]) ]
)

dnl UnixWare 2.x
AC_CHECK_FUNC([strcasecmp],
	[], [ AC_CHECK_LIB([resolv], [strcasecmp], [LIBS="$LIBS -lresolv"]) ]
)
AC_CHECK_FUNCS([utimes],
	[], [ AC_CHECK_LIB([c89], [utimes], [AC_DEFINE([HAVE_UTIMES])
					LIBS="$LIBS -lc89"]) ]
)

dnl    Checks for libutil functions
AC_CHECK_HEADERS([bsd/libutil.h libutil.h])
AC_SEARCH_LIBS([fmt_scaled], [util bsd])
AC_SEARCH_LIBS([scan_scaled], [util bsd])
AC_SEARCH_LIBS([login], [util bsd])
AC_SEARCH_LIBS([logout], [util bsd])
AC_SEARCH_LIBS([logwtmp], [util bsd])
AC_SEARCH_LIBS([openpty], [util bsd])
AC_SEARCH_LIBS([updwtmp], [util bsd])
AC_CHECK_FUNCS([fmt_scaled scan_scaled login logout openpty updwtmp logwtmp])

# On some platforms, inet_ntop may be found in libresolv or libnsl.
AC_SEARCH_LIBS([inet_ntop], [resolv nsl])

AC_FUNC_STRFTIME

# Check for ALTDIRFUNC glob() extension
AC_MSG_CHECKING([for GLOB_ALTDIRFUNC support])
AC_EGREP_CPP([FOUNDIT],
	[
		#include <glob.h>
		#ifdef GLOB_ALTDIRFUNC
		FOUNDIT
		#endif
	],
	[
		AC_DEFINE([GLOB_HAS_ALTDIRFUNC], [1],
			[Define if your system glob() function has
			the GLOB_ALTDIRFUNC extension])
		AC_MSG_RESULT([yes])
	],
	[
		AC_MSG_RESULT([no])
	]
)

# Check for g.gl_matchc glob() extension
AC_MSG_CHECKING([for gl_matchc field in glob_t])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <glob.h> ]],
	[[ glob_t g; g.gl_matchc = 1; ]])],
	[
		AC_DEFINE([GLOB_HAS_GL_MATCHC], [1],
			[Define if your system glob() function has
			gl_matchc options in glob_t])
		AC_MSG_RESULT([yes])
	], [
		AC_MSG_RESULT([no])
])

# Check for g.gl_statv glob() extension
AC_MSG_CHECKING([for gl_statv and GLOB_KEEPSTAT extensions for glob])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <glob.h> ]], [[
#ifndef GLOB_KEEPSTAT
#error "glob does not support GLOB_KEEPSTAT extension"
#endif
glob_t g;
g.gl_statv = NULL;
]])],
	[
		AC_DEFINE([GLOB_HAS_GL_STATV], [1],
			[Define if your system glob() function has
			gl_statv options in glob_t])
		AC_MSG_RESULT([yes])
	], [
		AC_MSG_RESULT([no])
	
])

AC_CHECK_DECLS([GLOB_NOMATCH], , , [#include <glob.h>])

AC_MSG_CHECKING([whether struct dirent allocates space for d_name])
AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <dirent.h>]],
	[[
	struct dirent d;
	exit(sizeof(d.d_name)<=sizeof(char));
	]])],
	[AC_MSG_RESULT([yes])],
	[
		AC_MSG_RESULT([no])
		AC_DEFINE([BROKEN_ONE_BYTE_DIRENT_D_NAME], [1],
			[Define if your struct dirent expects you to
			allocate extra space for d_name])
	],
	[
		AC_MSG_WARN([cross compiling: assuming BROKEN_ONE_BYTE_DIRENT_D_NAME])
		AC_DEFINE([BROKEN_ONE_BYTE_DIRENT_D_NAME])
	]
)

AC_MSG_CHECKING([for /proc/pid/fd directory])
if test -d "/proc/$$/fd" ; then
	AC_DEFINE([HAVE_PROC_PID], [1], [Define if you have /proc/$pid/fd])
	AC_MSG_RESULT([yes])
else
	AC_MSG_RESULT([no])
fi

# Check whether user wants S/Key support
SKEY_MSG="no"
AC_ARG_WITH([skey],
	[  --with-skey[[=PATH]]      Enable S/Key support (optionally in PATH)],
	[
		if test "x$withval" != "xno" ; then

			if test "x$withval" != "xyes" ; then
				CPPFLAGS="$CPPFLAGS -I${withval}/include"
				LDFLAGS="$LDFLAGS -L${withval}/lib"
			fi

			AC_DEFINE([SKEY], [1], [Define if you want S/Key support])
			LIBS="-lskey $LIBS"
			SKEY_MSG="yes"

			AC_MSG_CHECKING([for s/key support])
			AC_LINK_IFELSE(
				[AC_LANG_PROGRAM([[
#include <stdio.h>
#include <skey.h>
				]], [[
	char *ff = skey_keyinfo(""); ff="";
	exit(0);
				]])],
				[AC_MSG_RESULT([yes])],
				[
					AC_MSG_RESULT([no])
					AC_MSG_ERROR([** Incomplete or missing s/key libraries.])
				])
                 	AC_MSG_CHECKING([if skeychallenge takes 4 arguments])
			AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <stdio.h>
#include <skey.h>
				]], [[
	(void)skeychallenge(NULL,"name","",0);
				]])],
			[
				AC_MSG_RESULT([yes])
				AC_DEFINE([SKEYCHALLENGE_4ARG], [1],
					[Define if your skeychallenge()
					function takes 4 arguments (NetBSD)])],
			[
				AC_MSG_RESULT([no])
			])
		fi
	]
)

# Check whether user wants to use ldns
LDNS_MSG="no"
AC_ARG_WITH(ldns,
	[  --with-ldns[[=PATH]]      Use ldns for DNSSEC support (optionally in PATH)],
    [
        if test "x$withval" != "xno" ; then

			if test "x$withval" != "xyes" ; then
				CPPFLAGS="$CPPFLAGS -I${withval}/include"
				LDFLAGS="$LDFLAGS -L${withval}/lib"
			fi

            AC_DEFINE(HAVE_LDNS, 1, [Define if you want ldns support])
            LIBS="-lldns $LIBS"
            LDNS_MSG="yes"

            AC_MSG_CHECKING([for ldns support])
            AC_LINK_IFELSE(
                [AC_LANG_SOURCE([[
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <ldns/ldns.h>
int main() { ldns_status status = ldns_verify_trusted(NULL, NULL, NULL, NULL); status=LDNS_STATUS_OK; exit(0); }
                                ]])
                ],
				[AC_MSG_RESULT(yes)],
				[
					AC_MSG_RESULT(no)
					AC_MSG_ERROR([** Incomplete or missing ldns libraries.])
				])
        fi
    ]
)

# Check whether user wants libedit support
LIBEDIT_MSG="no"
AC_ARG_WITH([libedit],
	[  --with-libedit[[=PATH]]   Enable libedit support for sftp],
	[ if test "x$withval" != "xno" ; then
		if test "x$withval" = "xyes" ; then
			AC_PATH_TOOL([PKGCONFIG], [pkg-config], [no])
			if test "x$PKGCONFIG" != "xno"; then
				AC_MSG_CHECKING([if $PKGCONFIG knows about libedit])
			 	if "$PKGCONFIG" libedit; then
					AC_MSG_RESULT([yes])
					use_pkgconfig_for_libedit=yes
				else
					AC_MSG_RESULT([no])
				fi
			fi
		else
			CPPFLAGS="$CPPFLAGS -I${withval}/include"
			if test -n "${need_dash_r}"; then
				LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
			else
				LDFLAGS="-L${withval}/lib ${LDFLAGS}"
			fi
		fi
		if test "x$use_pkgconfig_for_libedit" = "xyes"; then
			LIBEDIT=`$PKGCONFIG --libs libedit`
			CPPFLAGS="$CPPFLAGS `$PKGCONFIG --cflags libedit`"
		else
			LIBEDIT="-ledit -lcurses"
		fi
		OTHERLIBS=`echo $LIBEDIT | sed 's/-ledit//'`
		AC_CHECK_LIB([edit], [el_init],
			[ AC_DEFINE([USE_LIBEDIT], [1], [Use libedit for sftp])
			  LIBEDIT_MSG="yes"
			  AC_SUBST([LIBEDIT])
			],
			[ AC_MSG_ERROR([libedit not found]) ],
			[ $OTHERLIBS ]
		)
		AC_MSG_CHECKING([if libedit version is compatible])
		AC_COMPILE_IFELSE(
		    [AC_LANG_PROGRAM([[ #include <histedit.h> ]],
		    [[
	int i = H_SETSIZE;
	el_init("", NULL, NULL, NULL);
	exit(0);
		    ]])],
		    [ AC_MSG_RESULT([yes]) ],
		    [ AC_MSG_RESULT([no])
		      AC_MSG_ERROR([libedit version is not compatible]) ]
		)
	fi ]
)

AUDIT_MODULE=none
AC_ARG_WITH([audit],
	[  --with-audit=module     Enable audit support (modules=debug,bsm,linux)],
	[
	  AC_MSG_CHECKING([for supported audit module])
	  case "$withval" in
	  bsm)
		AC_MSG_RESULT([bsm])
		AUDIT_MODULE=bsm
		dnl    Checks for headers, libs and functions
		AC_CHECK_HEADERS([bsm/audit.h], [],
		    [AC_MSG_ERROR([BSM enabled and bsm/audit.h not found])],
		    [
#ifdef HAVE_TIME_H
# include <time.h>
#endif
		    ]
)
		AC_CHECK_LIB([bsm], [getaudit], [],
		    [AC_MSG_ERROR([BSM enabled and required library not found])])
		AC_CHECK_FUNCS([getaudit], [],
		    [AC_MSG_ERROR([BSM enabled and required function not found])])
		# These are optional
		AC_CHECK_FUNCS([getaudit_addr aug_get_machine])
		AC_DEFINE([USE_BSM_AUDIT], [1], [Use BSM audit module])
		if test "$sol2ver" -ge 11; then
		   	SSHDLIBS="$SSHDLIBS -lscf"
                   	AC_DEFINE([BROKEN_BSM_API], [1], 
		        	  [The system has incomplete BSM API])
		fi
		;;
	  linux)
		AC_MSG_RESULT([linux])
		AUDIT_MODULE=linux
		dnl    Checks for headers, libs and functions
		AC_CHECK_HEADERS([libaudit.h])
		SSHDLIBS="$SSHDLIBS -laudit"
		AC_DEFINE([USE_LINUX_AUDIT], [1], [Use Linux audit module])
		;;
	  debug)
		AUDIT_MODULE=debug
		AC_MSG_RESULT([debug])
		AC_DEFINE([SSH_AUDIT_EVENTS], [1], [Use audit debugging module])
		;;
	  no)
		AC_MSG_RESULT([no])
		;;
	  *)
		AC_MSG_ERROR([Unknown audit module $withval])
		;;
	esac ]
)

AC_ARG_WITH([pie],
    [  --with-pie           Build Position Independent Executables if possible], [
	if test "x$withval" = "xno"; then
		use_pie=no
	fi
	if test "x$withval" = "xyes"; then
		use_pie=yes
	fi
    ]
)
if test "x$use_pie" = "x"; then
	use_pie=no
fi
if test "x$use_toolchain_hardening" != "x1" && test "x$use_pie" = "xauto"; then
	# Turn off automatic PIE when toolchain hardening is off.
	use_pie=no
fi
if test "x$use_pie" = "xauto"; then
	# Automatic PIE requires gcc >= 4.x
	AC_MSG_CHECKING([for gcc >= 4.x])
	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#if !defined(__GNUC__) || __GNUC__ < 4
#error gcc is too old
#endif
]])],
	[ AC_MSG_RESULT([yes]) ],
	[ AC_MSG_RESULT([no])
	  use_pie=no ]
)
fi
if test "x$use_pie" != "xno"; then
	SAVED_CFLAGS="$CFLAGS"
	SAVED_LDFLAGS="$LDFLAGS"
	OSSH_CHECK_CFLAG_COMPILE([-fPIE])
	OSSH_CHECK_LDFLAG_LINK([-pie])
	# We use both -fPIE and -pie or neither.
	AC_MSG_CHECKING([whether both -fPIE and -pie are supported])
	if echo "x $CFLAGS"  | grep ' -fPIE' >/dev/null 2>&1 && \
	   echo "x $LDFLAGS" | grep ' -pie'  >/dev/null 2>&1 ; then
		AC_MSG_RESULT([yes])
	else
		AC_MSG_RESULT([no])
		CFLAGS="$SAVED_CFLAGS"
		LDFLAGS="$SAVED_LDFLAGS"
	fi
fi

dnl    Checks for library functions. Please keep in alphabetical order
AC_CHECK_FUNCS([ \
	Blowfish_initstate \
	Blowfish_expandstate \
	Blowfish_expand0state \
	Blowfish_stream2word \
	asprintf \
	b64_ntop \
	__b64_ntop \
	b64_pton \
	__b64_pton \
	bcopy \
	bcrypt_pbkdf \
	bindresvport_sa \
	blf_enc \
	cap_rights_limit \
	clock \
	closefrom \
	dirfd \
	endgrent \
	explicit_bzero \
	fchmod \
	fchown \
	freeaddrinfo \
	fstatfs \
	fstatvfs \
	futimes \
	getaddrinfo \
	getcwd \
	getgrouplist \
	getnameinfo \
	getopt \
	getpeereid \
	getpeerucred \
	getpgid \
	getpgrp \
	_getpty \
	getrlimit \
	getttyent \
	glob \
	group_from_gid \
	inet_aton \
	inet_ntoa \
	inet_ntop \
	innetgr \
	login_getcapbool \
	mblen \
	md5_crypt \
	memmove \
	mkdtemp \
	mmap \
	ngetaddrinfo \
	nsleep \
	ogetaddrinfo \
	openlog_r \
	poll \
	prctl \
	pstat \
	readpassphrase \
	realpath \
	recvmsg \
	rresvport_af \
	sendmsg \
	setdtablesize \
	setegid \
	setenv \
	seteuid \
	setgroupent \
	setgroups \
	setlinebuf \
	setlogin \
	setpassent\
	setpcred \
	setproctitle \
	setregid \
	setreuid \
	setrlimit \
	setsid \
	setvbuf \
	sigaction \
	sigvec \
	snprintf \
	socketpair \
	statfs \
	statvfs \
	strdup \
	strerror \
	strlcat \
	strlcpy \
	strmode \
	strnlen \
	strnvis \
	strptime \
	strtonum \
	strtoll \
	strtoul \
	strtoull \
	swap32 \
	sysconf \
	tcgetpgrp \
	timingsafe_bcmp \
	truncate \
	unsetenv \
	updwtmpx \
	user_from_uid \
	usleep \
	vasprintf \
	vsnprintf \
	waitpid \
])

AC_LINK_IFELSE(
        [AC_LANG_PROGRAM(
           [[ #include <ctype.h> ]],
           [[ return (isblank('a')); ]])],
	[AC_DEFINE([HAVE_ISBLANK], [1], [Define if you have isblank(3C).])
])

# PKCS#11 support requires dlopen() and co
AC_SEARCH_LIBS([dlopen], [dl],
    [AC_DEFINE([ENABLE_PKCS11], [], [Enable for PKCS#11 support])]
)

# IRIX has a const char return value for gai_strerror()
AC_CHECK_FUNCS([gai_strerror], [
	AC_DEFINE([HAVE_GAI_STRERROR])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>

const char *gai_strerror(int);
			]], [[
	char *str;
	str = gai_strerror(0);
			]])], [
		AC_DEFINE([HAVE_CONST_GAI_STRERROR_PROTO], [1],
		[Define if gai_strerror() returns const char *])], [])])

AC_SEARCH_LIBS([nanosleep], [rt posix4], [AC_DEFINE([HAVE_NANOSLEEP], [1],
	[Some systems put nanosleep outside of libc])])

AC_SEARCH_LIBS([clock_gettime], [rt],
	[AC_DEFINE([HAVE_CLOCK_GETTIME], [1], [Have clock_gettime])])

dnl Make sure prototypes are defined for these before using them.
AC_CHECK_DECL([getrusage], [AC_CHECK_FUNCS([getrusage])])
AC_CHECK_DECL([strsep],
	[AC_CHECK_FUNCS([strsep])],
	[],
	[
#ifdef HAVE_STRING_H
# include <string.h>
#endif
	])

dnl tcsendbreak might be a macro
AC_CHECK_DECL([tcsendbreak],
	[AC_DEFINE([HAVE_TCSENDBREAK])],
	[AC_CHECK_FUNCS([tcsendbreak])],
	[#include <termios.h>]
)

AC_CHECK_DECLS([h_errno], , ,[#include <netdb.h>])

AC_CHECK_DECLS([SHUT_RD], , ,
	[
#include <sys/types.h>
#include <sys/socket.h>
	])

AC_CHECK_DECLS([O_NONBLOCK], , ,
	[
#include <sys/types.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
	])

AC_CHECK_DECLS([writev], , , [
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
	])

AC_CHECK_DECLS([MAXSYMLINKS], , , [
#include <sys/param.h>
	])

AC_CHECK_DECLS([offsetof], , , [
#include <stddef.h>
	])

# extra bits for select(2)
AC_CHECK_DECLS([howmany, NFDBITS], [], [], [[
#include <sys/param.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SYSMACROS_H
#include <sys/sysmacros.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
	]])
AC_CHECK_TYPES([fd_mask], [], [], [[
#include <sys/param.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
	]])

AC_CHECK_FUNCS([setresuid], [
	dnl Some platorms have setresuid that isn't implemented, test for this
	AC_MSG_CHECKING([if setresuid seems to work])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <stdlib.h>
#include <errno.h>
		]], [[
	errno=0;
	setresuid(0,0,0);
	if (errno==ENOSYS)
		exit(1);
	else
		exit(0);
		]])],
		[AC_MSG_RESULT([yes])],
		[AC_DEFINE([BROKEN_SETRESUID], [1],
			[Define if your setresuid() is broken])
		 AC_MSG_RESULT([not implemented])],
		[AC_MSG_WARN([cross compiling: not checking setresuid])]
	)
])

AC_CHECK_FUNCS([setresgid], [
	dnl Some platorms have setresgid that isn't implemented, test for this
	AC_MSG_CHECKING([if setresgid seems to work])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <stdlib.h>
#include <errno.h>
		]], [[
	errno=0;
	setresgid(0,0,0);
	if (errno==ENOSYS)
		exit(1);
	else
		exit(0);
		]])],
		[AC_MSG_RESULT([yes])],
		[AC_DEFINE([BROKEN_SETRESGID], [1],
			[Define if your setresgid() is broken])
		 AC_MSG_RESULT([not implemented])],
		[AC_MSG_WARN([cross compiling: not checking setresuid])]
	)
])

dnl    Checks for time functions
AC_CHECK_FUNCS([gettimeofday time])
dnl    Checks for utmp functions
AC_CHECK_FUNCS([endutent getutent getutid getutline pututline setutent])
AC_CHECK_FUNCS([utmpname])
dnl    Checks for utmpx functions
AC_CHECK_FUNCS([endutxent getutxent getutxid getutxline getutxuser pututxline])
AC_CHECK_FUNCS([setutxdb setutxent utmpxname])
dnl    Checks for lastlog functions
AC_CHECK_FUNCS([getlastlogxbyname])

AC_CHECK_FUNC([daemon],
	[AC_DEFINE([HAVE_DAEMON], [1], [Define if your libraries define daemon()])],
	[AC_CHECK_LIB([bsd], [daemon],
		[LIBS="$LIBS -lbsd"; AC_DEFINE([HAVE_DAEMON])])]
)

AC_CHECK_FUNC([getpagesize],
	[AC_DEFINE([HAVE_GETPAGESIZE], [1],
		[Define if your libraries define getpagesize()])],
	[AC_CHECK_LIB([ucb], [getpagesize],
		[LIBS="$LIBS -lucb"; AC_DEFINE([HAVE_GETPAGESIZE])])]
)

# Check for broken snprintf
if test "x$ac_cv_func_snprintf" = "xyes" ; then
	AC_MSG_CHECKING([whether snprintf correctly terminates long strings])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[ #include <stdio.h> ]],
		[[
	char b[5];
	snprintf(b,5,"123456789");
	exit(b[4]!='\0'); 
		]])],
		[AC_MSG_RESULT([yes])],
		[
			AC_MSG_RESULT([no])
			AC_DEFINE([BROKEN_SNPRINTF], [1],
				[Define if your snprintf is busted])
			AC_MSG_WARN([****** Your snprintf() function is broken, complain to your vendor])
		],
		[ AC_MSG_WARN([cross compiling: Assuming working snprintf()]) ]
	)
fi

# We depend on vsnprintf returning the right thing on overflow: the
# number of characters it tried to create (as per SUSv3)
if test "x$ac_cv_func_vsnprintf" = "xyes" ; then
	AC_MSG_CHECKING([whether vsnprintf returns correct values on overflow])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <stdio.h>
#include <stdarg.h>

int x_snprintf(char *str, size_t count, const char *fmt, ...)
{
	size_t ret;
	va_list ap;

	va_start(ap, fmt);
	ret = vsnprintf(str, count, fmt, ap);
	va_end(ap);
	return ret;
}
		]], [[
char x[1];
if (x_snprintf(x, 1, "%s %d", "hello", 12345) != 11)
	return 1;
if (x_snprintf(NULL, 0, "%s %d", "hello", 12345) != 11)
	return 1;
return 0;
		]])],
		[AC_MSG_RESULT([yes])],
		[
			AC_MSG_RESULT([no])
			AC_DEFINE([BROKEN_SNPRINTF], [1],
				[Define if your snprintf is busted])
			AC_MSG_WARN([****** Your vsnprintf() function is broken, complain to your vendor])
		],
		[ AC_MSG_WARN([cross compiling: Assuming working vsnprintf()]) ]
	)
fi

# On systems where [v]snprintf is broken, but is declared in stdio,
# check that the fmt argument is const char * or just char *.
# This is only useful for when BROKEN_SNPRINTF
AC_MSG_CHECKING([whether snprintf can declare const char *fmt])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <stdio.h>
int snprintf(char *a, size_t b, const char *c, ...) { return 0; }
		]], [[
	snprintf(0, 0, 0);
		]])],
   [AC_MSG_RESULT([yes])
    AC_DEFINE([SNPRINTF_CONST], [const],
              [Define as const if snprintf() can declare const char *fmt])],
   [AC_MSG_RESULT([no])
    AC_DEFINE([SNPRINTF_CONST], [/* not const */])])

# Check for missing getpeereid (or equiv) support
NO_PEERCHECK=""
if test "x$ac_cv_func_getpeereid" != "xyes" -a "x$ac_cv_func_getpeerucred" != "xyes"; then
	AC_MSG_CHECKING([whether system supports SO_PEERCRED getsockopt])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>]], [[int i = SO_PEERCRED;]])],
		[ AC_MSG_RESULT([yes])
		  AC_DEFINE([HAVE_SO_PEERCRED], [1], [Have PEERCRED socket option])
		], [AC_MSG_RESULT([no])
		NO_PEERCHECK=1
        ])
fi

dnl see whether mkstemp() requires XXXXXX
if test "x$ac_cv_func_mkdtemp" = "xyes" ; then
AC_MSG_CHECKING([for (overly) strict mkstemp])
AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([[
#include <stdlib.h>
	]], [[
	char template[]="conftest.mkstemp-test";
	if (mkstemp(template) == -1)
		exit(1);
	unlink(template);
	exit(0);
	]])],
	[
		AC_MSG_RESULT([no])
	],
	[
		AC_MSG_RESULT([yes])
		AC_DEFINE([HAVE_STRICT_MKSTEMP], [1], [Silly mkstemp()])
	],
	[
		AC_MSG_RESULT([yes])
		AC_DEFINE([HAVE_STRICT_MKSTEMP])
	]
)
fi

dnl make sure that openpty does not reacquire controlling terminal
if test ! -z "$check_for_openpty_ctty_bug"; then
	AC_MSG_CHECKING([if openpty correctly handles controlling tty])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <stdio.h>
#include <sys/fcntl.h>
#include <sys/types.h>
#include <sys/wait.h>
		]], [[
	pid_t pid;
	int fd, ptyfd, ttyfd, status;

	pid = fork();
	if (pid < 0) {		/* failed */
		exit(1);
	} else if (pid > 0) {	/* parent */
		waitpid(pid, &status, 0);
		if (WIFEXITED(status))
			exit(WEXITSTATUS(status));
		else
			exit(2);
	} else {		/* child */
		close(0); close(1); close(2);
		setsid();
		openpty(&ptyfd, &ttyfd, NULL, NULL, NULL);
		fd = open("/dev/tty", O_RDWR | O_NOCTTY);
		if (fd >= 0)
			exit(3);	/* Acquired ctty: broken */
		else
			exit(0);	/* Did not acquire ctty: OK */
	}
		]])],
		[
			AC_MSG_RESULT([yes])
		],
		[
			AC_MSG_RESULT([no])
			AC_DEFINE([SSHD_ACQUIRES_CTTY])
		],
		[
			AC_MSG_RESULT([cross-compiling, assuming yes])
		]
	)
fi

if test "x$ac_cv_func_getaddrinfo" = "xyes" && \
    test "x$check_for_hpux_broken_getaddrinfo" = "x1"; then
	AC_MSG_CHECKING([if getaddrinfo seems to work])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <stdio.h>
#include <sys/socket.h>
#include <netdb.h>
#include <errno.h>
#include <netinet/in.h>

#define TEST_PORT "2222"
		]], [[
	int err, sock;
	struct addrinfo *gai_ai, *ai, hints;
	char ntop[NI_MAXHOST], strport[NI_MAXSERV], *name = NULL;

	memset(&hints, 0, sizeof(hints));
	hints.ai_family = PF_UNSPEC;
	hints.ai_socktype = SOCK_STREAM;
	hints.ai_flags = AI_PASSIVE;

	err = getaddrinfo(name, TEST_PORT, &hints, &gai_ai);
	if (err != 0) {
		fprintf(stderr, "getaddrinfo failed (%s)", gai_strerror(err));
		exit(1);
	}

	for (ai = gai_ai; ai != NULL; ai = ai->ai_next) {
		if (ai->ai_family != AF_INET6)
			continue;

		err = getnameinfo(ai->ai_addr, ai->ai_addrlen, ntop,
		    sizeof(ntop), strport, sizeof(strport),
		    NI_NUMERICHOST|NI_NUMERICSERV);

		if (err != 0) {
			if (err == EAI_SYSTEM)
				perror("getnameinfo EAI_SYSTEM");
			else
				fprintf(stderr, "getnameinfo failed: %s\n",
				    gai_strerror(err));
			exit(2);
		}

		sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
		if (sock < 0)
			perror("socket");
		if (bind(sock, ai->ai_addr, ai->ai_addrlen) < 0) {
			if (errno == EBADF)
				exit(3);
		}
	}
	exit(0);
		]])],
		[
			AC_MSG_RESULT([yes])
		],
		[
			AC_MSG_RESULT([no])
			AC_DEFINE([BROKEN_GETADDRINFO])
		],
		[
			AC_MSG_RESULT([cross-compiling, assuming yes])
		]
	)
fi

if test "x$ac_cv_func_getaddrinfo" = "xyes" && \
    test "x$check_for_aix_broken_getaddrinfo" = "x1"; then
	AC_MSG_CHECKING([if getaddrinfo seems to work])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <stdio.h>
#include <sys/socket.h>
#include <netdb.h>
#include <errno.h>
#include <netinet/in.h>

#define TEST_PORT "2222"
		]], [[
	int err, sock;
	struct addrinfo *gai_ai, *ai, hints;
	char ntop[NI_MAXHOST], strport[NI_MAXSERV], *name = NULL;

	memset(&hints, 0, sizeof(hints));
	hints.ai_family = PF_UNSPEC;
	hints.ai_socktype = SOCK_STREAM;
	hints.ai_flags = AI_PASSIVE;

	err = getaddrinfo(name, TEST_PORT, &hints, &gai_ai);
	if (err != 0) {
		fprintf(stderr, "getaddrinfo failed (%s)", gai_strerror(err));
		exit(1);
	}

	for (ai = gai_ai; ai != NULL; ai = ai->ai_next) {
		if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6)
			continue;

		err = getnameinfo(ai->ai_addr, ai->ai_addrlen, ntop,
		    sizeof(ntop), strport, sizeof(strport),
		    NI_NUMERICHOST|NI_NUMERICSERV);

		if (ai->ai_family == AF_INET && err != 0) {
			perror("getnameinfo");
			exit(2);
		}
	}
	exit(0);
		]])],
		[
			AC_MSG_RESULT([yes])
			AC_DEFINE([AIX_GETNAMEINFO_HACK], [1],
				[Define if you have a getaddrinfo that fails
				for the all-zeros IPv6 address])
		],
		[
			AC_MSG_RESULT([no])
			AC_DEFINE([BROKEN_GETADDRINFO])
		],
		[
			AC_MSG_RESULT([cross-compiling, assuming no])
		]
	)
fi

if test "x$check_for_conflicting_getspnam" = "x1"; then
	AC_MSG_CHECKING([for conflicting getspnam in shadow.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <shadow.h> ]],
		[[ exit(0); ]])],
		[
			AC_MSG_RESULT([no])
		],
		[
			AC_MSG_RESULT([yes])
			AC_DEFINE([GETSPNAM_CONFLICTING_DEFS], [1],
			    [Conflicting defs for getspnam])
		]
	)
fi

AC_FUNC_GETPGRP

# Search for OpenSSL
saved_CPPFLAGS="$CPPFLAGS"
saved_LDFLAGS="$LDFLAGS"
AC_ARG_WITH([ssl-dir],
	[  --with-ssl-dir=PATH     Specify path to OpenSSL installation ],
	[
		if test "x$withval" != "xno" ; then
			case "$withval" in
				# Relative paths
				./*|../*)	withval="`pwd`/$withval"
			esac
			if test -d "$withval/lib"; then
				if test -n "${need_dash_r}"; then
					LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
				else
					LDFLAGS="-L${withval}/lib ${LDFLAGS}"
				fi
			elif test -d "$withval/lib64"; then
				if test -n "${need_dash_r}"; then
					LDFLAGS="-L${withval}/lib64 -R${withval}/lib64 ${LDFLAGS}"
				else
					LDFLAGS="-L${withval}/lib64 ${LDFLAGS}"
				fi
			else
				if test -n "${need_dash_r}"; then
					LDFLAGS="-L${withval} -R${withval} ${LDFLAGS}"
				else
					LDFLAGS="-L${withval} ${LDFLAGS}"
				fi
			fi
			if test -d "$withval/include"; then
				CPPFLAGS="-I${withval}/include ${CPPFLAGS}"
			else
				CPPFLAGS="-I${withval} ${CPPFLAGS}"
			fi
		fi
	]
)
LIBS="-lcrypto $LIBS"
AC_TRY_LINK_FUNC([RAND_add], [AC_DEFINE([HAVE_OPENSSL], [1],
	[Define if your ssl headers are included
	with #include <openssl/header.h>])],
	[
		dnl Check default openssl install dir
		if test -n "${need_dash_r}"; then
			LDFLAGS="-L/usr/local/ssl/lib -R/usr/local/ssl/lib ${saved_LDFLAGS}"
		else
			LDFLAGS="-L/usr/local/ssl/lib ${saved_LDFLAGS}"
		fi
		CPPFLAGS="-I/usr/local/ssl/include ${saved_CPPFLAGS}"
		AC_CHECK_HEADER([openssl/opensslv.h], ,
		    [AC_MSG_ERROR([*** OpenSSL headers missing - please install first or check config.log ***])])
		AC_TRY_LINK_FUNC([RAND_add], [AC_DEFINE([HAVE_OPENSSL])],
			[
				AC_MSG_ERROR([*** Can't find recent OpenSSL libcrypto (see config.log for details) ***])
			]
		)
	]
)

# Determine OpenSSL header version
AC_MSG_CHECKING([OpenSSL header version])
AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([[
#include <stdio.h>
#include <string.h>
#include <openssl/opensslv.h>
#define DATA "conftest.sslincver"
	]], [[
	FILE *fd;
	int rc;

	fd = fopen(DATA,"w");
	if(fd == NULL)
		exit(1);

	if ((rc = fprintf(fd ,"%08x (%s)\n", OPENSSL_VERSION_NUMBER, OPENSSL_VERSION_TEXT)) <0)
		exit(1);

	exit(0);
	]])],
	[
		ssl_header_ver=`cat conftest.sslincver`
		AC_MSG_RESULT([$ssl_header_ver])
	],
	[
		AC_MSG_RESULT([not found])
		AC_MSG_ERROR([OpenSSL version header not found.])
	],
	[
		AC_MSG_WARN([cross compiling: not checking])
	]
)

# Determine OpenSSL library version
AC_MSG_CHECKING([OpenSSL library version])
AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([[
#include <stdio.h>
#include <string.h>
#include <openssl/opensslv.h>
#include <openssl/crypto.h>
#define DATA "conftest.ssllibver"
	]], [[
	FILE *fd;
	int rc;

	fd = fopen(DATA,"w");
	if(fd == NULL)
		exit(1);

	if ((rc = fprintf(fd ,"%08x (%s)\n", SSLeay(),
	    SSLeay_version(SSLEAY_VERSION))) <0)
		exit(1);

	exit(0);
	]])],
	[
		ssl_library_ver=`cat conftest.ssllibver`
		# Check version is supported.
		case "$ssl_library_ver" in
			0090[[0-7]]*|009080[[0-5]]*)
				AC_MSG_ERROR([OpenSSL >= 0.9.8f required])
		                ;;
		        *) ;;
		esac
		AC_MSG_RESULT([$ssl_library_ver])
	],
	[
		AC_MSG_RESULT([not found])
		AC_MSG_ERROR([OpenSSL library not found.])
	],
	[
		AC_MSG_WARN([cross compiling: not checking])
	]
)

# XXX make --without-openssl work
AC_DEFINE_UNQUOTED([WITH_OPENSSL], [1], [use libcrypto for cryptography])
AC_DEFINE_UNQUOTED([WITH_SSH1], [1], [include SSH protocol version 1 support])

AC_ARG_WITH([openssl-header-check],
	[  --without-openssl-header-check Disable OpenSSL version consistency check],
	[  if test "x$withval" = "xno" ; then
		openssl_check_nonfatal=1
	   fi
	]
)

# Sanity check OpenSSL headers
AC_MSG_CHECKING([whether OpenSSL's headers match the library])
AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([[
#include <string.h>
#include <openssl/opensslv.h>
	]], [[
	exit(SSLeay() == OPENSSL_VERSION_NUMBER ? 0 : 1);
	]])],
	[
		AC_MSG_RESULT([yes])
	],
	[
		AC_MSG_RESULT([no])
		if test "x$openssl_check_nonfatal" = "x"; then
			AC_MSG_ERROR([Your OpenSSL headers do not match your
library. Check config.log for details.
If you are sure your installation is consistent, you can disable the check
by running "./configure --without-openssl-header-check".
Also see contrib/findssl.sh for help identifying header/library mismatches.
])
		else
			AC_MSG_WARN([Your OpenSSL headers do not match your
library. Check config.log for details.
Also see contrib/findssl.sh for help identifying header/library mismatches.])
		fi
	],
	[
		AC_MSG_WARN([cross compiling: not checking])
	]
)

AC_MSG_CHECKING([if programs using OpenSSL functions will link])
AC_LINK_IFELSE(
	[AC_LANG_PROGRAM([[ #include <openssl/evp.h> ]],
	[[ SSLeay_add_all_algorithms(); ]])],
	[
		AC_MSG_RESULT([yes])
	],
	[
		AC_MSG_RESULT([no])
		saved_LIBS="$LIBS"
		LIBS="$LIBS -ldl"
		AC_MSG_CHECKING([if programs using OpenSSL need -ldl])
		AC_LINK_IFELSE(
			[AC_LANG_PROGRAM([[ #include <openssl/evp.h> ]],
			[[ SSLeay_add_all_algorithms(); ]])],
			[
				AC_MSG_RESULT([yes])
			],
			[
				AC_MSG_RESULT([no])
				LIBS="$saved_LIBS"
			]
		)
	]
)

AC_CHECK_FUNCS([ \
	BN_is_prime_ex \
	DSA_generate_parameters_ex \
	EVP_DigestInit_ex \
	EVP_DigestFinal_ex \
	EVP_MD_CTX_init \
	EVP_MD_CTX_cleanup \
	EVP_MD_CTX_copy_ex \
	HMAC_CTX_init \
	RSA_generate_key_ex \
	RSA_get_default_method \
])

AC_ARG_WITH([ssl-engine],
	[  --with-ssl-engine       Enable OpenSSL (hardware) ENGINE support ],
	[ if test "x$withval" != "xno" ; then
		AC_MSG_CHECKING([for OpenSSL ENGINE support])
		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <openssl/engine.h>
			]], [[
	ENGINE_load_builtin_engines();
	ENGINE_register_all_complete();
			]])],
			[ AC_MSG_RESULT([yes])
			  AC_DEFINE([USE_OPENSSL_ENGINE], [1],
			     [Enable OpenSSL engine support])
			], [ AC_MSG_ERROR([OpenSSL ENGINE support not found])
		])
	  fi ]
)

# Check for OpenSSL without EVP_aes_{192,256}_cbc
AC_MSG_CHECKING([whether OpenSSL has crippled AES support])
AC_LINK_IFELSE(
	[AC_LANG_PROGRAM([[
#include <string.h>
#include <openssl/evp.h>
	]], [[
	exit(EVP_aes_192_cbc() == NULL || EVP_aes_256_cbc() == NULL);
	]])],
	[
		AC_MSG_RESULT([no])
	],
	[
		AC_MSG_RESULT([yes])
		AC_DEFINE([OPENSSL_LOBOTOMISED_AES], [1],
		    [libcrypto is missing AES 192 and 256 bit functions])
	]
)

# Check for OpenSSL with EVP_aes_*ctr
AC_MSG_CHECKING([whether OpenSSL has AES CTR via EVP])
AC_LINK_IFELSE(
	[AC_LANG_PROGRAM([[
#include <string.h>
#include <openssl/evp.h>
	]], [[
	exit(EVP_aes_128_ctr() == NULL ||
	    EVP_aes_192_cbc() == NULL ||
	    EVP_aes_256_cbc() == NULL);
	]])],
	[
		AC_MSG_RESULT([yes])
		AC_DEFINE([OPENSSL_HAVE_EVPCTR], [1],
		    [libcrypto has EVP AES CTR])
	],
	[
		AC_MSG_RESULT([no])
	]
)

# Check for OpenSSL with EVP_aes_*gcm
AC_MSG_CHECKING([whether OpenSSL has AES GCM via EVP])
AC_LINK_IFELSE(
	[AC_LANG_PROGRAM([[
#include <string.h>
#include <openssl/evp.h>
	]], [[
	exit(EVP_aes_128_gcm() == NULL ||
	    EVP_aes_256_gcm() == NULL ||
	    EVP_CTRL_GCM_SET_IV_FIXED == 0 ||
	    EVP_CTRL_GCM_IV_GEN == 0 ||
	    EVP_CTRL_GCM_SET_TAG == 0 ||
	    EVP_CTRL_GCM_GET_TAG == 0 ||
	    EVP_CIPHER_CTX_ctrl(NULL, 0, 0, NULL) == 0);
	]])],
	[
		AC_MSG_RESULT([yes])
		AC_DEFINE([OPENSSL_HAVE_EVPGCM], [1],
		    [libcrypto has EVP AES GCM])
	],
	[
		AC_MSG_RESULT([no])
		unsupported_algorithms="$unsupported_cipers \
		   aes128-gcm@openssh.com aes256-gcm@openssh.com"
	]
)

AC_SEARCH_LIBS([EVP_CIPHER_CTX_ctrl], [crypto],
	[AC_DEFINE([HAVE_EVP_CIPHER_CTX_CTRL], [1],
	    [Define if libcrypto has EVP_CIPHER_CTX_ctrl])])

AC_MSG_CHECKING([if EVP_DigestUpdate returns an int])
AC_LINK_IFELSE(
	[AC_LANG_PROGRAM([[
#include <string.h>
#include <openssl/evp.h>
	]], [[
	if(EVP_DigestUpdate(NULL, NULL,0))
		exit(0);
	]])],
	[
		AC_MSG_RESULT([yes])
	],
	[
		AC_MSG_RESULT([no])
		AC_DEFINE([OPENSSL_EVP_DIGESTUPDATE_VOID], [1],
		    [Define if EVP_DigestUpdate returns void])
	]
)

# Some systems want crypt() from libcrypt, *not* the version in OpenSSL,
# because the system crypt() is more featureful.
if test "x$check_for_libcrypt_before" = "x1"; then
	AC_CHECK_LIB([crypt], [crypt])
fi

# Some Linux systems (Slackware) need crypt() from libcrypt, *not* the
# version in OpenSSL.
if test "x$check_for_libcrypt_later" = "x1"; then
	AC_CHECK_LIB([crypt], [crypt], [LIBS="$LIBS -lcrypt"])
fi
AC_CHECK_FUNCS([crypt DES_crypt])

# Search for SHA256 support in libc and/or OpenSSL
AC_CHECK_FUNCS([SHA256_Update EVP_sha256], ,
    [unsupported_algorithms="$unsupported_algorithms \
	hmac-sha2-256 hmac-sha2-512 \
	diffie-hellman-group-exchange-sha256 \
	hmac-sha2-256-etm@openssh.com hmac-sha2-512-etm@openssh.com"
     ]
)
# Search for RIPE-MD support in OpenSSL
AC_CHECK_FUNCS([EVP_ripemd160], ,
    [unsupported_algorithms="$unsupported_algorithms \
	hmac-ripemd160
	hmac-ripemd160@openssh.com
	hmac-ripemd160-etm@openssh.com"
     ]
)

# Check complete ECC support in OpenSSL
AC_MSG_CHECKING([whether OpenSSL has NID_X9_62_prime256v1])
AC_LINK_IFELSE(
	[AC_LANG_PROGRAM([[
#include <openssl/ec.h>
#include <openssl/ecdh.h>
#include <openssl/ecdsa.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/opensslv.h>
#if OPENSSL_VERSION_NUMBER < 0x0090807f /* 0.9.8g */
# error "OpenSSL < 0.9.8g has unreliable ECC code"
#endif
	]], [[
	EC_KEY *e = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
	const EVP_MD *m = EVP_sha256(); /* We need this too */
	]])],
	[ AC_MSG_RESULT([yes])
	  enable_nistp256=1 ],
	[ AC_MSG_RESULT([no]) ]
)

AC_MSG_CHECKING([whether OpenSSL has NID_secp384r1])
AC_LINK_IFELSE(
	[AC_LANG_PROGRAM([[
#include <openssl/ec.h>
#include <openssl/ecdh.h>
#include <openssl/ecdsa.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/opensslv.h>
#if OPENSSL_VERSION_NUMBER < 0x0090807f /* 0.9.8g */
# error "OpenSSL < 0.9.8g has unreliable ECC code"
#endif
	]], [[
	EC_KEY *e = EC_KEY_new_by_curve_name(NID_secp384r1);
	const EVP_MD *m = EVP_sha384(); /* We need this too */
	]])],
	[ AC_MSG_RESULT([yes])
	  enable_nistp384=1 ],
	[ AC_MSG_RESULT([no]) ]
)

AC_MSG_CHECKING([whether OpenSSL has NID_secp521r1])
AC_LINK_IFELSE(
	[AC_LANG_PROGRAM([[
#include <openssl/ec.h>
#include <openssl/ecdh.h>
#include <openssl/ecdsa.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/opensslv.h>
#if OPENSSL_VERSION_NUMBER < 0x0090807f /* 0.9.8g */
# error "OpenSSL < 0.9.8g has unreliable ECC code"
#endif
	]], [[
	EC_KEY *e = EC_KEY_new_by_curve_name(NID_secp521r1);
	const EVP_MD *m = EVP_sha512(); /* We need this too */
	]])],
	[ AC_MSG_RESULT([yes])
	  AC_MSG_CHECKING([if OpenSSL's NID_secp521r1 is functional])
	  AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <openssl/ec.h>
#include <openssl/ecdh.h>
#include <openssl/ecdsa.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/opensslv.h>
		]],[[
		EC_KEY *e = EC_KEY_new_by_curve_name(NID_secp521r1);
		const EVP_MD *m = EVP_sha512(); /* We need this too */
		exit(e == NULL || m == NULL);
		]])],
		[ AC_MSG_RESULT([yes])
		  enable_nistp521=1 ],
		[ AC_MSG_RESULT([no]) ],
		[ AC_MSG_WARN([cross-compiling: assuming yes])
		  enable_nistp521=1 ]
	  )],
	AC_MSG_RESULT([no])
)

COMMENT_OUT_ECC="#no ecc#"
TEST_SSH_ECC=no

if test x$enable_nistp256 = x1 || test x$enable_nistp384 = x1 || \
    test x$enable_nistp521 = x1; then
	AC_DEFINE(OPENSSL_HAS_ECC, [1], [OpenSSL has ECC])
fi
if test x$enable_nistp256 = x1; then
	AC_DEFINE([OPENSSL_HAS_NISTP256], [1],
	    [libcrypto has NID_X9_62_prime256v1])
	TEST_SSH_ECC=yes
	COMMENT_OUT_ECC=""
else
	unsupported_algorithms="$unsupported_algorithms ecdsa-sha2-nistp256 \
	    ecdh-sha2-nistp256 ecdsa-sha2-nistp256-cert-v01@openssh.com"
fi
if test x$enable_nistp384 = x1; then
	AC_DEFINE([OPENSSL_HAS_NISTP384], [1], [libcrypto has NID_secp384r1])
	TEST_SSH_ECC=yes
	COMMENT_OUT_ECC=""
else
	unsupported_algorithms="$unsupported_algorithms ecdsa-sha2-nistp384 \
	    ecdh-sha2-nistp384 ecdsa-sha2-nistp384-cert-v01@openssh.com"
fi
if test x$enable_nistp521 = x1; then
	AC_DEFINE([OPENSSL_HAS_NISTP521], [1], [libcrypto has NID_secp521r1])
	TEST_SSH_ECC=yes
	COMMENT_OUT_ECC=""
else
	unsupported_algorithms="$unsupported_algorithms ecdh-sha2-nistp521 \
	    ecdsa-sha2-nistp521 ecdsa-sha2-nistp521-cert-v01@openssh.com"
fi

AC_SUBST([TEST_SSH_ECC])
AC_SUBST([COMMENT_OUT_ECC])

AC_CHECK_FUNCS([ \
	arc4random \
	arc4random_buf \
	arc4random_stir \
	arc4random_uniform \
])

saved_LIBS="$LIBS"
AC_CHECK_LIB([iaf], [ia_openinfo], [
	LIBS="$LIBS -liaf"
	AC_CHECK_FUNCS([set_id], [SSHDLIBS="$SSHDLIBS -liaf"
				AC_DEFINE([HAVE_LIBIAF], [1],
        		[Define if system has libiaf that supports set_id])
				])
])
LIBS="$saved_LIBS"

### Configure cryptographic random number support

# Check wheter OpenSSL seeds itself
AC_MSG_CHECKING([whether OpenSSL's PRNG is internally seeded])
AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([[
#include <string.h>
#include <openssl/rand.h>
	]], [[
	exit(RAND_status() == 1 ? 0 : 1);
	]])],
	[
		OPENSSL_SEEDS_ITSELF=yes
		AC_MSG_RESULT([yes])
	],
	[
		AC_MSG_RESULT([no])
	],
	[
		AC_MSG_WARN([cross compiling: assuming yes])
		# This is safe, since we will fatal() at runtime if
		# OpenSSL is not seeded correctly.
		OPENSSL_SEEDS_ITSELF=yes
	]
)

# PRNGD TCP socket
AC_ARG_WITH([prngd-port],
	[  --with-prngd-port=PORT  read entropy from PRNGD/EGD TCP localhost:PORT],
	[
		case "$withval" in
		no)
			withval=""
			;;
		[[0-9]]*)
			;;
		*)
			AC_MSG_ERROR([You must specify a numeric port number for --with-prngd-port])
			;;
		esac
		if test ! -z "$withval" ; then
			PRNGD_PORT="$withval"
			AC_DEFINE_UNQUOTED([PRNGD_PORT], [$PRNGD_PORT],
				[Port number of PRNGD/EGD random number socket])
		fi
	]
)

# PRNGD Unix domain socket
AC_ARG_WITH([prngd-socket],
	[  --with-prngd-socket=FILE read entropy from PRNGD/EGD socket FILE (default=/var/run/egd-pool)],
	[
		case "$withval" in
		yes)
			withval="/var/run/egd-pool"
			;;
		no)
			withval=""
			;;
		/*)
			;;
		*)
			AC_MSG_ERROR([You must specify an absolute path to the entropy socket])
			;;
		esac

		if test ! -z "$withval" ; then
			if test ! -z "$PRNGD_PORT" ; then
				AC_MSG_ERROR([You may not specify both a PRNGD/EGD port and socket])
			fi
			if test ! -r "$withval" ; then
				AC_MSG_WARN([Entropy socket is not readable])
			fi
			PRNGD_SOCKET="$withval"
			AC_DEFINE_UNQUOTED([PRNGD_SOCKET], ["$PRNGD_SOCKET"],
				[Location of PRNGD/EGD random number socket])
		fi
	],
	[
		# Check for existing socket only if we don't have a random device already
		if test "x$OPENSSL_SEEDS_ITSELF" != "xyes" ; then
			AC_MSG_CHECKING([for PRNGD/EGD socket])
			# Insert other locations here
			for sock in /var/run/egd-pool /dev/egd-pool /etc/entropy; do
				if test -r $sock && $TEST_MINUS_S_SH -c "test -S $sock -o -p $sock" ; then
					PRNGD_SOCKET="$sock"
					AC_DEFINE_UNQUOTED([PRNGD_SOCKET], ["$PRNGD_SOCKET"])
					break;
				fi
			done
			if test ! -z "$PRNGD_SOCKET" ; then
				AC_MSG_RESULT([$PRNGD_SOCKET])
			else
				AC_MSG_RESULT([not found])
			fi
		fi
	]
)

# Which randomness source do we use?
if test ! -z "$PRNGD_PORT" ; then
	RAND_MSG="PRNGd port $PRNGD_PORT"
elif test ! -z "$PRNGD_SOCKET" ; then
	RAND_MSG="PRNGd socket $PRNGD_SOCKET"
elif test ! -z "$OPENSSL_SEEDS_ITSELF" ; then
	AC_DEFINE([OPENSSL_PRNG_ONLY], [1],
		[Define if you want OpenSSL's internally seeded PRNG only])
	RAND_MSG="OpenSSL internal ONLY"
else
	AC_MSG_ERROR([OpenSSH has no source of random numbers. Please configure OpenSSL with an entropy source or re-run configure using one of the --with-prngd-port or --with-prngd-socket options])
fi

# Check for PAM libs
PAM_MSG="no"
AC_ARG_WITH([pam],
	[  --with-pam              Enable PAM support ],
	[
		if test "x$withval" != "xno" ; then
			if test "x$ac_cv_header_security_pam_appl_h" != "xyes" && \
			   test "x$ac_cv_header_pam_pam_appl_h" != "xyes" ; then
				AC_MSG_ERROR([PAM headers not found])
			fi

			saved_LIBS="$LIBS"
			AC_CHECK_LIB([dl], [dlopen], , )
			AC_CHECK_LIB([pam], [pam_set_item], , [AC_MSG_ERROR([*** libpam missing])])
			AC_CHECK_FUNCS([pam_getenvlist])
			AC_CHECK_FUNCS([pam_putenv])
			LIBS="$saved_LIBS"

			PAM_MSG="yes"

			SSHDLIBS="$SSHDLIBS -lpam"
			AC_DEFINE([USE_PAM], [1],
				[Define if you want to enable PAM support])

			if test $ac_cv_lib_dl_dlopen = yes; then
				case "$LIBS" in
				*-ldl*)
					# libdl already in LIBS
					;;
				*)
					SSHDLIBS="$SSHDLIBS -ldl"
					;;
				esac
			fi
		fi
	]
)

# Check for older PAM
if test "x$PAM_MSG" = "xyes" ; then
	# Check PAM strerror arguments (old PAM)
	AC_MSG_CHECKING([whether pam_strerror takes only one argument])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <stdlib.h>
#if defined(HAVE_SECURITY_PAM_APPL_H)
#include <security/pam_appl.h>
#elif defined (HAVE_PAM_PAM_APPL_H)
#include <pam/pam_appl.h>
#endif
		]], [[
(void)pam_strerror((pam_handle_t *)NULL, -1);
		]])], [AC_MSG_RESULT([no])], [
			AC_DEFINE([HAVE_OLD_PAM], [1],
				[Define if you have an old version of PAM
				which takes only one argument to pam_strerror])
			AC_MSG_RESULT([yes])
			PAM_MSG="yes (old library)"
		
	])
fi

case "$host" in
*-*-cygwin*)
	SSH_PRIVSEP_USER=CYGWIN_SSH_PRIVSEP_USER
	;;
*)
	SSH_PRIVSEP_USER=sshd
	;;
esac
AC_ARG_WITH([privsep-user],
	[  --with-privsep-user=user Specify non-privileged user for privilege separation],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			SSH_PRIVSEP_USER=$withval
		fi
	]
)
if test "x$SSH_PRIVSEP_USER" = "xCYGWIN_SSH_PRIVSEP_USER" ; then
	AC_DEFINE_UNQUOTED([SSH_PRIVSEP_USER], [CYGWIN_SSH_PRIVSEP_USER],
		[Cygwin function to fetch non-privileged user for privilege separation])
else
	AC_DEFINE_UNQUOTED([SSH_PRIVSEP_USER], ["$SSH_PRIVSEP_USER"],
		[non-privileged user for privilege separation])
fi
AC_SUBST([SSH_PRIVSEP_USER])

if test "x$have_linux_no_new_privs" = "x1" ; then
AC_CHECK_DECL([SECCOMP_MODE_FILTER], [have_seccomp_filter=1], , [
	#include <sys/types.h>
	#include <linux/seccomp.h>
])
fi
if test "x$have_seccomp_filter" = "x1" ; then
AC_MSG_CHECKING([kernel for seccomp_filter support])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
		#include <errno.h>
		#include <elf.h>
		#include <linux/audit.h>
		#include <linux/seccomp.h>
		#include <stdlib.h>
		#include <sys/prctl.h>
	]],
	[[ int i = $seccomp_audit_arch;
	   errno = 0;
	   prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, NULL, 0, 0);
	   exit(errno == EFAULT ? 0 : 1); ]])],
	[ AC_MSG_RESULT([yes]) ], [
		AC_MSG_RESULT([no])
		# Disable seccomp filter as a target
		have_seccomp_filter=0
	]
)
fi

# Decide which sandbox style to use
sandbox_arg=""
AC_ARG_WITH([sandbox],
	[  --with-sandbox=style    Specify privilege separation sandbox (no, darwin, rlimit, systrace, seccomp_filter, capsicum)],
	[
		if test "x$withval" = "xyes" ; then
			sandbox_arg=""
		else
			sandbox_arg="$withval"
		fi
	]
)

# Some platforms (seems to be the ones that have a kernel poll(2)-type
# function with which they implement select(2)) use an extra file descriptor
# when calling select(2), which means we can't use the rlimit sandbox.
AC_MSG_CHECKING([if select works with descriptor rlimit])
AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([[
#include <sys/types.h>
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/resource.h>
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
	]],[[
	struct rlimit rl_zero;
	int fd, r;
	fd_set fds;
	struct timeval tv;

	fd = open("/dev/null", O_RDONLY);
	FD_ZERO(&fds);
	FD_SET(fd, &fds);
	rl_zero.rlim_cur = rl_zero.rlim_max = 0;
	setrlimit(RLIMIT_FSIZE, &rl_zero);
	setrlimit(RLIMIT_NOFILE, &rl_zero);
	tv.tv_sec = 1;
	tv.tv_usec = 0;
	r = select(fd+1, &fds, NULL, NULL, &tv);
	exit (r == -1 ? 1 : 0);
	]])],
	[AC_MSG_RESULT([yes])
	 select_works_with_rlimit=yes],
	[AC_MSG_RESULT([no])
	 select_works_with_rlimit=no],
	[AC_MSG_WARN([cross compiling: assuming yes])]
)

AC_MSG_CHECKING([if setrlimit(RLIMIT_NOFILE,{0,0}) works])
AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([[
#include <sys/types.h>
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/resource.h>
#include <errno.h>
#include <stdlib.h>
	]],[[
	struct rlimit rl_zero;
	int fd, r;
	fd_set fds;

	rl_zero.rlim_cur = rl_zero.rlim_max = 0;
	r = setrlimit(RLIMIT_NOFILE, &rl_zero);
	exit (r == -1 ? 1 : 0);
	]])],
	[AC_MSG_RESULT([yes])
	 rlimit_nofile_zero_works=yes],
	[AC_MSG_RESULT([no])
	 rlimit_nofile_zero_works=no],
	[AC_MSG_WARN([cross compiling: assuming yes])]
)

AC_MSG_CHECKING([if setrlimit RLIMIT_FSIZE works])
AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/resource.h>
#include <stdlib.h>
	]],[[
		struct rlimit rl_zero;

		rl_zero.rlim_cur = rl_zero.rlim_max = 0;
		exit(setrlimit(RLIMIT_FSIZE, &rl_zero) != 0);
	]])],
	[AC_MSG_RESULT([yes])],
	[AC_MSG_RESULT([no])
	 AC_DEFINE(SANDBOX_SKIP_RLIMIT_FSIZE, 1,
	    [setrlimit RLIMIT_FSIZE works])],
	[AC_MSG_WARN([cross compiling: assuming yes])]
)

if test "x$sandbox_arg" = "xsystrace" || \
   ( test -z "$sandbox_arg" && test "x$have_systr_policy_kill" = "x1" ) ; then
	test "x$have_systr_policy_kill" != "x1" && \
		AC_MSG_ERROR([systrace sandbox requires systrace headers and SYSTR_POLICY_KILL support])
	SANDBOX_STYLE="systrace"
	AC_DEFINE([SANDBOX_SYSTRACE], [1], [Sandbox using systrace(4)])
elif test "x$sandbox_arg" = "xdarwin" || \
     ( test -z "$sandbox_arg" && test "x$ac_cv_func_sandbox_init" = "xyes" && \
       test "x$ac_cv_header_sandbox_h" = "xyes") ; then
	test "x$ac_cv_func_sandbox_init" != "xyes" -o \
	     "x$ac_cv_header_sandbox_h" != "xyes" && \
		AC_MSG_ERROR([Darwin seatbelt sandbox requires sandbox.h and sandbox_init function])
	SANDBOX_STYLE="darwin"
	AC_DEFINE([SANDBOX_DARWIN], [1], [Sandbox using Darwin sandbox_init(3)])
elif test "x$sandbox_arg" = "xseccomp_filter" || \
     ( test -z "$sandbox_arg" && \
       test "x$have_seccomp_filter" = "x1" && \
       test "x$ac_cv_header_elf_h" = "xyes" && \
       test "x$ac_cv_header_linux_audit_h" = "xyes" && \
       test "x$ac_cv_header_linux_filter_h" = "xyes" && \
       test "x$seccomp_audit_arch" != "x" && \
       test "x$have_linux_no_new_privs" = "x1" && \
       test "x$ac_cv_func_prctl" = "xyes" ) ; then
	test "x$seccomp_audit_arch" = "x" && \
		AC_MSG_ERROR([seccomp_filter sandbox not supported on $host])
	test "x$have_linux_no_new_privs" != "x1" && \
		AC_MSG_ERROR([seccomp_filter sandbox requires PR_SET_NO_NEW_PRIVS])
	test "x$have_seccomp_filter" != "x1" && \
		AC_MSG_ERROR([seccomp_filter sandbox requires seccomp headers])
	test "x$ac_cv_func_prctl" != "xyes" && \
		AC_MSG_ERROR([seccomp_filter sandbox requires prctl function])
	SANDBOX_STYLE="seccomp_filter"
	AC_DEFINE([SANDBOX_SECCOMP_FILTER], [1], [Sandbox using seccomp filter])
elif test "x$sandbox_arg" = "xcapsicum" || \
     ( test -z "$sandbox_arg" && \
       test "x$ac_cv_header_sys_capability_h" = "xyes" && \
       test "x$ac_cv_func_cap_rights_limit" = "xyes") ; then
       test "x$ac_cv_header_sys_capability_h" != "xyes" && \
		AC_MSG_ERROR([capsicum sandbox requires sys/capability.h header])
       test "x$ac_cv_func_cap_rights_limit" != "xyes" && \
		AC_MSG_ERROR([capsicum sandbox requires cap_rights_limit function])
       SANDBOX_STYLE="capsicum"
       AC_DEFINE([SANDBOX_CAPSICUM], [1], [Sandbox using capsicum])
elif test "x$sandbox_arg" = "xrlimit" || \
     ( test -z "$sandbox_arg" && test "x$ac_cv_func_setrlimit" = "xyes" && \
       test "x$select_works_with_rlimit" = "xyes" && \
       test "x$rlimit_nofile_zero_works" = "xyes" ) ; then
	test "x$ac_cv_func_setrlimit" != "xyes" && \
		AC_MSG_ERROR([rlimit sandbox requires setrlimit function])
	test "x$select_works_with_rlimit" != "xyes" && \
		AC_MSG_ERROR([rlimit sandbox requires select to work with rlimit])
	SANDBOX_STYLE="rlimit"
	AC_DEFINE([SANDBOX_RLIMIT], [1], [Sandbox using setrlimit(2)])
elif test -z "$sandbox_arg" || test "x$sandbox_arg" = "xno" || \
     test "x$sandbox_arg" = "xnone" || test "x$sandbox_arg" = "xnull" ; then
	SANDBOX_STYLE="none"
	AC_DEFINE([SANDBOX_NULL], [1], [no privsep sandboxing])
else
	AC_MSG_ERROR([unsupported --with-sandbox])
fi

# Cheap hack to ensure NEWS-OS libraries are arranged right.
if test ! -z "$SONY" ; then
  LIBS="$LIBS -liberty";
fi

# Check for  long long datatypes
AC_CHECK_TYPES([long long, unsigned long long, long double])

# Check datatype sizes
AC_CHECK_SIZEOF([short int], [2])
AC_CHECK_SIZEOF([int], [4])
AC_CHECK_SIZEOF([long int], [4])
AC_CHECK_SIZEOF([long long int], [8])

# Sanity check long long for some platforms (AIX)
if test "x$ac_cv_sizeof_long_long_int" = "x4" ; then
	ac_cv_sizeof_long_long_int=0
fi

# compute LLONG_MIN and LLONG_MAX if we don't know them.
if test -z "$have_llong_max"; then
	AC_MSG_CHECKING([for max value of long long])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <stdio.h>
/* Why is this so damn hard? */
#ifdef __GNUC__
# undef __GNUC__
#endif
#define __USE_ISOC99
#include <limits.h>
#define DATA "conftest.llminmax"
#define my_abs(a) ((a) < 0 ? ((a) * -1) : (a))

/*
 * printf in libc on some platforms (eg old Tru64) does not understand %lld so
 * we do this the hard way.
 */
static int
fprint_ll(FILE *f, long long n)
{
	unsigned int i;
	int l[sizeof(long long) * 8];

	if (n < 0)
		if (fprintf(f, "-") < 0)
			return -1;
	for (i = 0; n != 0; i++) {
		l[i] = my_abs(n % 10);
		n /= 10;
	}
	do {
		if (fprintf(f, "%d", l[--i]) < 0)
			return -1;
	} while (i != 0);
	if (fprintf(f, " ") < 0)
		return -1;
	return 0;
}
		]], [[
	FILE *f;
	long long i, llmin, llmax = 0;

	if((f = fopen(DATA,"w")) == NULL)
		exit(1);

#if defined(LLONG_MIN) && defined(LLONG_MAX)
	fprintf(stderr, "Using system header for LLONG_MIN and LLONG_MAX\n");
	llmin = LLONG_MIN;
	llmax = LLONG_MAX;
#else
	fprintf(stderr, "Calculating  LLONG_MIN and LLONG_MAX\n");
	/* This will work on one's complement and two's complement */
	for (i = 1; i > llmax; i <<= 1, i++)
		llmax = i;
	llmin = llmax + 1LL;	/* wrap */
#endif

	/* Sanity check */
	if (llmin + 1 < llmin || llmin - 1 < llmin || llmax + 1 > llmax
	    || llmax - 1 > llmax || llmin == llmax || llmin == 0
	    || llmax == 0 || llmax < LONG_MAX || llmin > LONG_MIN) {
		fprintf(f, "unknown unknown\n");
		exit(2);
	}

	if (fprint_ll(f, llmin) < 0)
		exit(3);
	if (fprint_ll(f, llmax) < 0)
		exit(4);
	if (fclose(f) < 0)
		exit(5);
	exit(0);
		]])],
		[
			llong_min=`$AWK '{print $1}' conftest.llminmax`
			llong_max=`$AWK '{print $2}' conftest.llminmax`

			AC_MSG_RESULT([$llong_max])
			AC_DEFINE_UNQUOTED([LLONG_MAX], [${llong_max}LL],
			    [max value of long long calculated by configure])
			AC_MSG_CHECKING([for min value of long long])
			AC_MSG_RESULT([$llong_min])
			AC_DEFINE_UNQUOTED([LLONG_MIN], [${llong_min}LL],
			    [min value of long long calculated by configure])
		],
		[
			AC_MSG_RESULT([not found])
		],
		[
			AC_MSG_WARN([cross compiling: not checking])
		]
	)
fi


# More checks for data types
AC_CACHE_CHECK([for u_int type], ac_cv_have_u_int, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ u_int a; a = 1;]])],
	[ ac_cv_have_u_int="yes" ], [ ac_cv_have_u_int="no" 
	])
])
if test "x$ac_cv_have_u_int" = "xyes" ; then
	AC_DEFINE([HAVE_U_INT], [1], [define if you have u_int data type])
	have_u_int=1
fi

AC_CACHE_CHECK([for intXX_t types], ac_cv_have_intxx_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ int8_t a; int16_t b; int32_t c; a = b = c = 1;]])],
	[ ac_cv_have_intxx_t="yes" ], [ ac_cv_have_intxx_t="no" 
	])
])
if test "x$ac_cv_have_intxx_t" = "xyes" ; then
	AC_DEFINE([HAVE_INTXX_T], [1], [define if you have intxx_t data type])
	have_intxx_t=1
fi

if (test -z "$have_intxx_t" && \
	   test "x$ac_cv_header_stdint_h" = "xyes")
then
    AC_MSG_CHECKING([for intXX_t types in stdint.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <stdint.h> ]],
	[[ int8_t a; int16_t b; int32_t c; a = b = c = 1;]])],
		[
			AC_DEFINE([HAVE_INTXX_T])
			AC_MSG_RESULT([yes])
		], [ AC_MSG_RESULT([no]) 
	])
fi

AC_CACHE_CHECK([for int64_t type], ac_cv_have_int64_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
#include <sys/socket.h>
#ifdef HAVE_SYS_BITYPES_H
# include <sys/bitypes.h>
#endif
		]], [[
int64_t a; a = 1;
		]])],
	[ ac_cv_have_int64_t="yes" ], [ ac_cv_have_int64_t="no" 
	])
])
if test "x$ac_cv_have_int64_t" = "xyes" ; then
	AC_DEFINE([HAVE_INT64_T], [1], [define if you have int64_t data type])
fi

AC_CACHE_CHECK([for u_intXX_t types], ac_cv_have_u_intxx_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ u_int8_t a; u_int16_t b; u_int32_t c; a = b = c = 1;]])],
	[ ac_cv_have_u_intxx_t="yes" ], [ ac_cv_have_u_intxx_t="no" 
	])
])
if test "x$ac_cv_have_u_intxx_t" = "xyes" ; then
	AC_DEFINE([HAVE_U_INTXX_T], [1], [define if you have u_intxx_t data type])
	have_u_intxx_t=1
fi

if test -z "$have_u_intxx_t" ; then
    AC_MSG_CHECKING([for u_intXX_t types in sys/socket.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/socket.h> ]],
	[[ u_int8_t a; u_int16_t b; u_int32_t c; a = b = c = 1;]])],
		[
			AC_DEFINE([HAVE_U_INTXX_T])
			AC_MSG_RESULT([yes])
		], [ AC_MSG_RESULT([no]) 
	])
fi

AC_CACHE_CHECK([for u_int64_t types], ac_cv_have_u_int64_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ u_int64_t a; a = 1;]])],
	[ ac_cv_have_u_int64_t="yes" ], [ ac_cv_have_u_int64_t="no" 
	])
])
if test "x$ac_cv_have_u_int64_t" = "xyes" ; then
	AC_DEFINE([HAVE_U_INT64_T], [1], [define if you have u_int64_t data type])
	have_u_int64_t=1
fi

if (test -z "$have_u_int64_t" && \
	   test "x$ac_cv_header_sys_bitypes_h" = "xyes")
then
    AC_MSG_CHECKING([for u_int64_t type in sys/bitypes.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/bitypes.h> ]],
	[[ u_int64_t a; a = 1]])],
		[
			AC_DEFINE([HAVE_U_INT64_T])
			AC_MSG_RESULT([yes])
		], [ AC_MSG_RESULT([no]) 
	])
fi

if test -z "$have_u_intxx_t" ; then
	AC_CACHE_CHECK([for uintXX_t types], ac_cv_have_uintxx_t, [
		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
			]], [[
	uint8_t a;
	uint16_t b;
	uint32_t c;
	a = b = c = 1;
			]])],
		[ ac_cv_have_uintxx_t="yes" ], [ ac_cv_have_uintxx_t="no" 
		])
	])
	if test "x$ac_cv_have_uintxx_t" = "xyes" ; then
		AC_DEFINE([HAVE_UINTXX_T], [1],
			[define if you have uintxx_t data type])
	fi
fi

if (test -z "$have_uintxx_t" && \
	   test "x$ac_cv_header_stdint_h" = "xyes")
then
    AC_MSG_CHECKING([for uintXX_t types in stdint.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <stdint.h> ]],
	[[ uint8_t a; uint16_t b; uint32_t c; a = b = c = 1;]])],
		[
			AC_DEFINE([HAVE_UINTXX_T])
			AC_MSG_RESULT([yes])
		], [ AC_MSG_RESULT([no]) 
	])
fi

if (test -z "$have_uintxx_t" && \
	   test "x$ac_cv_header_inttypes_h" = "xyes")
then
    AC_MSG_CHECKING([for uintXX_t types in inttypes.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <inttypes.h> ]],
	[[ uint8_t a; uint16_t b; uint32_t c; a = b = c = 1;]])],
		[
			AC_DEFINE([HAVE_UINTXX_T])
			AC_MSG_RESULT([yes])
		], [ AC_MSG_RESULT([no]) 
	])
fi

if (test -z "$have_u_intxx_t" || test -z "$have_intxx_t" && \
	   test "x$ac_cv_header_sys_bitypes_h" = "xyes")
then
	AC_MSG_CHECKING([for intXX_t and u_intXX_t types in sys/bitypes.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/bitypes.h>
		]], [[
			int8_t a; int16_t b; int32_t c;
			u_int8_t e; u_int16_t f; u_int32_t g;
			a = b = c = e = f = g = 1;
		]])],
		[
			AC_DEFINE([HAVE_U_INTXX_T])
			AC_DEFINE([HAVE_INTXX_T])
			AC_MSG_RESULT([yes])
		], [AC_MSG_RESULT([no])
	])
fi


AC_CACHE_CHECK([for u_char], ac_cv_have_u_char, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ u_char foo; foo = 125; ]])],
	[ ac_cv_have_u_char="yes" ], [ ac_cv_have_u_char="no" 
	])
])
if test "x$ac_cv_have_u_char" = "xyes" ; then
	AC_DEFINE([HAVE_U_CHAR], [1], [define if you have u_char data type])
fi

AC_CHECK_TYPES([intmax_t, uintmax_t], , , [
#include <sys/types.h>
#include <stdint.h>
])

TYPE_SOCKLEN_T

AC_CHECK_TYPES([sig_atomic_t], , , [#include <signal.h>])
AC_CHECK_TYPES([fsblkcnt_t, fsfilcnt_t], , , [
#include <sys/types.h>
#ifdef HAVE_SYS_BITYPES_H
#include <sys/bitypes.h>
#endif
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
])

AC_CHECK_TYPES([in_addr_t, in_port_t], , ,
[#include <sys/types.h>
#include <netinet/in.h>])

AC_CACHE_CHECK([for size_t], ac_cv_have_size_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ size_t foo; foo = 1235; ]])],
	[ ac_cv_have_size_t="yes" ], [ ac_cv_have_size_t="no" 
	])
])
if test "x$ac_cv_have_size_t" = "xyes" ; then
	AC_DEFINE([HAVE_SIZE_T], [1], [define if you have size_t data type])
fi

AC_CACHE_CHECK([for ssize_t], ac_cv_have_ssize_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ ssize_t foo; foo = 1235; ]])],
	[ ac_cv_have_ssize_t="yes" ], [ ac_cv_have_ssize_t="no" 
	])
])
if test "x$ac_cv_have_ssize_t" = "xyes" ; then
	AC_DEFINE([HAVE_SSIZE_T], [1], [define if you have ssize_t data type])
fi

AC_CACHE_CHECK([for clock_t], ac_cv_have_clock_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <time.h> ]],
	[[ clock_t foo; foo = 1235; ]])],
	[ ac_cv_have_clock_t="yes" ], [ ac_cv_have_clock_t="no" 
	])
])
if test "x$ac_cv_have_clock_t" = "xyes" ; then
	AC_DEFINE([HAVE_CLOCK_T], [1], [define if you have clock_t data type])
fi

AC_CACHE_CHECK([for sa_family_t], ac_cv_have_sa_family_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
		]], [[ sa_family_t foo; foo = 1235; ]])],
	[ ac_cv_have_sa_family_t="yes" ],
	[ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
		]], [[ sa_family_t foo; foo = 1235; ]])],
		[ ac_cv_have_sa_family_t="yes" ],
		[ ac_cv_have_sa_family_t="no" ]
	)
	])
])
if test "x$ac_cv_have_sa_family_t" = "xyes" ; then
	AC_DEFINE([HAVE_SA_FAMILY_T], [1],
		[define if you have sa_family_t data type])
fi

AC_CACHE_CHECK([for pid_t], ac_cv_have_pid_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ pid_t foo; foo = 1235; ]])],
	[ ac_cv_have_pid_t="yes" ], [ ac_cv_have_pid_t="no" 
	])
])
if test "x$ac_cv_have_pid_t" = "xyes" ; then
	AC_DEFINE([HAVE_PID_T], [1], [define if you have pid_t data type])
fi

AC_CACHE_CHECK([for mode_t], ac_cv_have_mode_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ mode_t foo; foo = 1235; ]])],
	[ ac_cv_have_mode_t="yes" ], [ ac_cv_have_mode_t="no" 
	])
])
if test "x$ac_cv_have_mode_t" = "xyes" ; then
	AC_DEFINE([HAVE_MODE_T], [1], [define if you have mode_t data type])
fi


AC_CACHE_CHECK([for struct sockaddr_storage], ac_cv_have_struct_sockaddr_storage, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
		]], [[ struct sockaddr_storage s; ]])],
	[ ac_cv_have_struct_sockaddr_storage="yes" ],
	[ ac_cv_have_struct_sockaddr_storage="no" 
	])
])
if test "x$ac_cv_have_struct_sockaddr_storage" = "xyes" ; then
	AC_DEFINE([HAVE_STRUCT_SOCKADDR_STORAGE], [1],
		[define if you have struct sockaddr_storage data type])
fi

AC_CACHE_CHECK([for struct sockaddr_in6], ac_cv_have_struct_sockaddr_in6, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <netinet/in.h>
		]], [[ struct sockaddr_in6 s; s.sin6_family = 0; ]])],
	[ ac_cv_have_struct_sockaddr_in6="yes" ],
	[ ac_cv_have_struct_sockaddr_in6="no" 
	])
])
if test "x$ac_cv_have_struct_sockaddr_in6" = "xyes" ; then
	AC_DEFINE([HAVE_STRUCT_SOCKADDR_IN6], [1],
		[define if you have struct sockaddr_in6 data type])
fi

AC_CACHE_CHECK([for struct in6_addr], ac_cv_have_struct_in6_addr, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <netinet/in.h>
		]], [[ struct in6_addr s; s.s6_addr[0] = 0; ]])],
	[ ac_cv_have_struct_in6_addr="yes" ],
	[ ac_cv_have_struct_in6_addr="no" 
	])
])
if test "x$ac_cv_have_struct_in6_addr" = "xyes" ; then
	AC_DEFINE([HAVE_STRUCT_IN6_ADDR], [1],
		[define if you have struct in6_addr data type])

dnl Now check for sin6_scope_id
	AC_CHECK_MEMBERS([struct sockaddr_in6.sin6_scope_id], , ,
		[
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <netinet/in.h>
		])
fi

AC_CACHE_CHECK([for struct addrinfo], ac_cv_have_struct_addrinfo, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
		]], [[ struct addrinfo s; s.ai_flags = AI_PASSIVE; ]])],
	[ ac_cv_have_struct_addrinfo="yes" ],
	[ ac_cv_have_struct_addrinfo="no" 
	])
])
if test "x$ac_cv_have_struct_addrinfo" = "xyes" ; then
	AC_DEFINE([HAVE_STRUCT_ADDRINFO], [1],
		[define if you have struct addrinfo data type])
fi

AC_CACHE_CHECK([for struct timeval], ac_cv_have_struct_timeval, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/time.h> ]],
	[[ struct timeval tv; tv.tv_sec = 1;]])],
	[ ac_cv_have_struct_timeval="yes" ],
	[ ac_cv_have_struct_timeval="no" 
	])
])
if test "x$ac_cv_have_struct_timeval" = "xyes" ; then
	AC_DEFINE([HAVE_STRUCT_TIMEVAL], [1], [define if you have struct timeval])
	have_struct_timeval=1
fi

AC_CHECK_TYPES([struct timespec])

# We need int64_t or else certian parts of the compile will fail.
if test "x$ac_cv_have_int64_t" = "xno" && \
	test "x$ac_cv_sizeof_long_int" != "x8" && \
	test "x$ac_cv_sizeof_long_long_int" = "x0" ; then
	echo "OpenSSH requires int64_t support.  Contact your vendor or install"
	echo "an alternative compiler (I.E., GCC) before continuing."
	echo ""
	exit 1;
else
dnl test snprintf (broken on SCO w/gcc)
	AC_RUN_IFELSE(
		[AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
#ifdef HAVE_SNPRINTF
main()
{
	char buf[50];
	char expected_out[50];
	int mazsize = 50 ;
#if (SIZEOF_LONG_INT == 8)
	long int num = 0x7fffffffffffffff;
#else
	long long num = 0x7fffffffffffffffll;
#endif
	strcpy(expected_out, "9223372036854775807");
	snprintf(buf, mazsize, "%lld", num);
	if(strcmp(buf, expected_out) != 0)
		exit(1);
	exit(0);
}
#else
main() { exit(0); }
#endif
		]])], [ true ], [ AC_DEFINE([BROKEN_SNPRINTF]) ],
		AC_MSG_WARN([cross compiling: Assuming working snprintf()])
	)
fi

dnl Checks for structure members
OSSH_CHECK_HEADER_FOR_FIELD([ut_host], [utmp.h], [HAVE_HOST_IN_UTMP])
OSSH_CHECK_HEADER_FOR_FIELD([ut_host], [utmpx.h], [HAVE_HOST_IN_UTMPX])
OSSH_CHECK_HEADER_FOR_FIELD([syslen], [utmpx.h], [HAVE_SYSLEN_IN_UTMPX])
OSSH_CHECK_HEADER_FOR_FIELD([ut_pid], [utmp.h], [HAVE_PID_IN_UTMP])
OSSH_CHECK_HEADER_FOR_FIELD([ut_type], [utmp.h], [HAVE_TYPE_IN_UTMP])
OSSH_CHECK_HEADER_FOR_FIELD([ut_type], [utmpx.h], [HAVE_TYPE_IN_UTMPX])
OSSH_CHECK_HEADER_FOR_FIELD([ut_tv], [utmp.h], [HAVE_TV_IN_UTMP])
OSSH_CHECK_HEADER_FOR_FIELD([ut_id], [utmp.h], [HAVE_ID_IN_UTMP])
OSSH_CHECK_HEADER_FOR_FIELD([ut_id], [utmpx.h], [HAVE_ID_IN_UTMPX])
OSSH_CHECK_HEADER_FOR_FIELD([ut_addr], [utmp.h], [HAVE_ADDR_IN_UTMP])
OSSH_CHECK_HEADER_FOR_FIELD([ut_addr], [utmpx.h], [HAVE_ADDR_IN_UTMPX])
OSSH_CHECK_HEADER_FOR_FIELD([ut_addr_v6], [utmp.h], [HAVE_ADDR_V6_IN_UTMP])
OSSH_CHECK_HEADER_FOR_FIELD([ut_addr_v6], [utmpx.h], [HAVE_ADDR_V6_IN_UTMPX])
OSSH_CHECK_HEADER_FOR_FIELD([ut_exit], [utmp.h], [HAVE_EXIT_IN_UTMP])
OSSH_CHECK_HEADER_FOR_FIELD([ut_time], [utmp.h], [HAVE_TIME_IN_UTMP])
OSSH_CHECK_HEADER_FOR_FIELD([ut_time], [utmpx.h], [HAVE_TIME_IN_UTMPX])
OSSH_CHECK_HEADER_FOR_FIELD([ut_tv], [utmpx.h], [HAVE_TV_IN_UTMPX])

AC_CHECK_MEMBERS([struct stat.st_blksize])
AC_CHECK_MEMBERS([struct passwd.pw_gecos, struct passwd.pw_class,
struct passwd.pw_change, struct passwd.pw_expire],
[], [], [[
#include <sys/types.h>
#include <pwd.h>
]])

AC_CHECK_MEMBER([struct __res_state.retrans], [], [AC_DEFINE([__res_state], [state],
	[Define if we don't have struct __res_state in resolv.h])],
[[
#include <stdio.h>
#if HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>
]])

AC_CACHE_CHECK([for ss_family field in struct sockaddr_storage],
		ac_cv_have_ss_family_in_struct_ss, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
		]], [[ struct sockaddr_storage s; s.ss_family = 1; ]])],
	[ ac_cv_have_ss_family_in_struct_ss="yes" ],
	[ ac_cv_have_ss_family_in_struct_ss="no" ])
])
if test "x$ac_cv_have_ss_family_in_struct_ss" = "xyes" ; then
	AC_DEFINE([HAVE_SS_FAMILY_IN_SS], [1], [Fields in struct sockaddr_storage])
fi

AC_CACHE_CHECK([for __ss_family field in struct sockaddr_storage],
		ac_cv_have___ss_family_in_struct_ss, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
		]], [[ struct sockaddr_storage s; s.__ss_family = 1; ]])],
	[ ac_cv_have___ss_family_in_struct_ss="yes" ],
	[ ac_cv_have___ss_family_in_struct_ss="no" 
	])
])
if test "x$ac_cv_have___ss_family_in_struct_ss" = "xyes" ; then
	AC_DEFINE([HAVE___SS_FAMILY_IN_SS], [1],
		[Fields in struct sockaddr_storage])
fi

dnl make sure we're using the real structure members and not defines
AC_CACHE_CHECK([for msg_accrights field in struct msghdr],
		ac_cv_have_accrights_in_msghdr, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
		]], [[
#ifdef msg_accrights
#error "msg_accrights is a macro"
exit(1);
#endif
struct msghdr m;
m.msg_accrights = 0;
exit(0);
		]])],
		[ ac_cv_have_accrights_in_msghdr="yes" ],
		[ ac_cv_have_accrights_in_msghdr="no" ]
	)
])
if test "x$ac_cv_have_accrights_in_msghdr" = "xyes" ; then
	AC_DEFINE([HAVE_ACCRIGHTS_IN_MSGHDR], [1],
		[Define if your system uses access rights style
		file descriptor passing])
fi

AC_MSG_CHECKING([if struct statvfs.f_fsid is integral type])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/param.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
	]], [[ struct statvfs s; s.f_fsid = 0; ]])],
	[ AC_MSG_RESULT([yes]) ],
	[ AC_MSG_RESULT([no])

	AC_MSG_CHECKING([if fsid_t has member val])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/statvfs.h>
	]], [[ fsid_t t; t.val[0] = 0; ]])],
	[ AC_MSG_RESULT([yes])
	  AC_DEFINE([FSID_HAS_VAL], [1], [fsid_t has member val]) ],
	[ AC_MSG_RESULT([no]) ])

	AC_MSG_CHECKING([if f_fsid has member __val])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/statvfs.h>
	]], [[ fsid_t t; t.__val[0] = 0; ]])],
	[ AC_MSG_RESULT([yes])
	  AC_DEFINE([FSID_HAS___VAL], [1], [fsid_t has member __val]) ],
	[ AC_MSG_RESULT([no]) ])
])

AC_CACHE_CHECK([for msg_control field in struct msghdr],
		ac_cv_have_control_in_msghdr, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
		]], [[
#ifdef msg_control
#error "msg_control is a macro"
exit(1);
#endif
struct msghdr m;
m.msg_control = 0;
exit(0);
		]])],
		[ ac_cv_have_control_in_msghdr="yes" ],
		[ ac_cv_have_control_in_msghdr="no" ]
	)
])
if test "x$ac_cv_have_control_in_msghdr" = "xyes" ; then
	AC_DEFINE([HAVE_CONTROL_IN_MSGHDR], [1],
		[Define if your system uses ancillary data style
		file descriptor passing])
fi

AC_CACHE_CHECK([if libc defines __progname], ac_cv_libc_defines___progname, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
		[[ extern char *__progname; printf("%s", __progname); ]])],
	[ ac_cv_libc_defines___progname="yes" ],
	[ ac_cv_libc_defines___progname="no" 
	])
])
if test "x$ac_cv_libc_defines___progname" = "xyes" ; then
	AC_DEFINE([HAVE___PROGNAME], [1], [Define if libc defines __progname])
fi

AC_CACHE_CHECK([whether $CC implements __FUNCTION__], ac_cv_cc_implements___FUNCTION__, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <stdio.h> ]],
		[[ printf("%s", __FUNCTION__); ]])],
	[ ac_cv_cc_implements___FUNCTION__="yes" ],
	[ ac_cv_cc_implements___FUNCTION__="no" 
	])
])
if test "x$ac_cv_cc_implements___FUNCTION__" = "xyes" ; then
	AC_DEFINE([HAVE___FUNCTION__], [1],
		[Define if compiler implements __FUNCTION__])
fi

AC_CACHE_CHECK([whether $CC implements __func__], ac_cv_cc_implements___func__, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <stdio.h> ]],
		[[ printf("%s", __func__); ]])],
	[ ac_cv_cc_implements___func__="yes" ],
	[ ac_cv_cc_implements___func__="no" 
	])
])
if test "x$ac_cv_cc_implements___func__" = "xyes" ; then
	AC_DEFINE([HAVE___func__], [1], [Define if compiler implements __func__])
fi

AC_CACHE_CHECK([whether va_copy exists], ac_cv_have_va_copy, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <stdarg.h>
va_list x,y;
		]], [[ va_copy(x,y); ]])],
	[ ac_cv_have_va_copy="yes" ],
	[ ac_cv_have_va_copy="no" 
	])
])
if test "x$ac_cv_have_va_copy" = "xyes" ; then
	AC_DEFINE([HAVE_VA_COPY], [1], [Define if va_copy exists])
fi

AC_CACHE_CHECK([whether __va_copy exists], ac_cv_have___va_copy, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <stdarg.h>
va_list x,y;
		]], [[ __va_copy(x,y); ]])],
	[ ac_cv_have___va_copy="yes" ], [ ac_cv_have___va_copy="no" 
	])
])
if test "x$ac_cv_have___va_copy" = "xyes" ; then
	AC_DEFINE([HAVE___VA_COPY], [1], [Define if __va_copy exists])
fi

AC_CACHE_CHECK([whether getopt has optreset support],
		ac_cv_have_getopt_optreset, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <getopt.h> ]],
		[[ extern int optreset; optreset = 0; ]])],
	[ ac_cv_have_getopt_optreset="yes" ],
	[ ac_cv_have_getopt_optreset="no" 
	])
])
if test "x$ac_cv_have_getopt_optreset" = "xyes" ; then
	AC_DEFINE([HAVE_GETOPT_OPTRESET], [1],
		[Define if your getopt(3) defines and uses optreset])
fi

AC_CACHE_CHECK([if libc defines sys_errlist], ac_cv_libc_defines_sys_errlist, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
[[ extern const char *const sys_errlist[]; printf("%s", sys_errlist[0]);]])],
	[ ac_cv_libc_defines_sys_errlist="yes" ],
	[ ac_cv_libc_defines_sys_errlist="no" 
	])
])
if test "x$ac_cv_libc_defines_sys_errlist" = "xyes" ; then
	AC_DEFINE([HAVE_SYS_ERRLIST], [1],
		[Define if your system defines sys_errlist[]])
fi


AC_CACHE_CHECK([if libc defines sys_nerr], ac_cv_libc_defines_sys_nerr, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
[[ extern int sys_nerr; printf("%i", sys_nerr);]])],
	[ ac_cv_libc_defines_sys_nerr="yes" ],
	[ ac_cv_libc_defines_sys_nerr="no" 
	])
])
if test "x$ac_cv_libc_defines_sys_nerr" = "xyes" ; then
	AC_DEFINE([HAVE_SYS_NERR], [1], [Define if your system defines sys_nerr])
fi

# Check libraries needed by DNS fingerprint support
AC_SEARCH_LIBS([getrrsetbyname], [resolv],
	[AC_DEFINE([HAVE_GETRRSETBYNAME], [1],
		[Define if getrrsetbyname() exists])],
	[
		# Needed by our getrrsetbyname()
		AC_SEARCH_LIBS([res_query], [resolv])
		AC_SEARCH_LIBS([dn_expand], [resolv])
		AC_MSG_CHECKING([if res_query will link])
		AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <netdb.h>
#include <resolv.h>
				]], [[
	res_query (0, 0, 0, 0, 0);
				]])],
		    AC_MSG_RESULT([yes]),
		   [AC_MSG_RESULT([no])
		    saved_LIBS="$LIBS"
		    LIBS="$LIBS -lresolv"
		    AC_MSG_CHECKING([for res_query in -lresolv])
		    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <netdb.h>
#include <resolv.h>
				]], [[
	res_query (0, 0, 0, 0, 0);
				]])],
			[AC_MSG_RESULT([yes])],
			[LIBS="$saved_LIBS"
			 AC_MSG_RESULT([no])])
		    ])
		AC_CHECK_FUNCS([_getshort _getlong])
		AC_CHECK_DECLS([_getshort, _getlong], , ,
		    [#include <sys/types.h>
		    #include <arpa/nameser.h>])
		AC_CHECK_MEMBER([HEADER.ad],
			[AC_DEFINE([HAVE_HEADER_AD], [1],
			    [Define if HEADER.ad exists in arpa/nameser.h])], ,
			[#include <arpa/nameser.h>])
	])

AC_MSG_CHECKING([if struct __res_state _res is an extern])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <stdio.h>
#if HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>
extern struct __res_state _res;
		]], [[ ]])],
		[AC_MSG_RESULT([yes])
		 AC_DEFINE([HAVE__RES_EXTERN], [1],
		    [Define if you have struct __res_state _res as an extern])
		],
		[ AC_MSG_RESULT([no]) ]
)

# Check whether user wants SELinux support
SELINUX_MSG="no"
LIBSELINUX=""
AC_ARG_WITH([selinux],
	[  --with-selinux          Enable SELinux support],
	[ if test "x$withval" != "xno" ; then
		save_LIBS="$LIBS"
		AC_DEFINE([WITH_SELINUX], [1],
			[Define if you want SELinux support.])
		SELINUX_MSG="yes"
		AC_CHECK_HEADER([selinux/selinux.h], ,
			AC_MSG_ERROR([SELinux support requires selinux.h header]))
		AC_CHECK_LIB([selinux], [setexeccon],
			[ LIBSELINUX="-lselinux"
			  LIBS="$LIBS -lselinux"
			],
			AC_MSG_ERROR([SELinux support requires libselinux library]))
		SSHLIBS="$SSHLIBS $LIBSELINUX"
		SSHDLIBS="$SSHDLIBS $LIBSELINUX"
		AC_CHECK_FUNCS([getseuserbyname get_default_context_with_level])
		LIBS="$save_LIBS"
	fi ]
)
AC_SUBST([SSHLIBS])
AC_SUBST([SSHDLIBS])

# Check whether user wants Kerberos 5 support
KRB5_MSG="no"
AC_ARG_WITH([kerberos5],
	[  --with-kerberos5=PATH   Enable Kerberos 5 support],
	[ if test "x$withval" != "xno" ; then
		if test "x$withval" = "xyes" ; then
			KRB5ROOT="/usr/local"
		else
			KRB5ROOT=${withval}
		fi

		AC_DEFINE([KRB5], [1], [Define if you want Kerberos 5 support])
		KRB5_MSG="yes"

		AC_PATH_PROG([KRB5CONF], [krb5-config],
			     [$KRB5ROOT/bin/krb5-config],
			     [$KRB5ROOT/bin:$PATH])
		if test -x $KRB5CONF ; then
			K5CFLAGS="`$KRB5CONF --cflags`"
			K5LIBS="`$KRB5CONF --libs`"
			CPPFLAGS="$CPPFLAGS $K5CFLAGS"

			AC_MSG_CHECKING([for gssapi support])
			if $KRB5CONF | grep gssapi >/dev/null ; then
				AC_MSG_RESULT([yes])
				AC_DEFINE([GSSAPI], [1],
					[Define this if you want GSSAPI
					support in the version 2 protocol])
				GSSCFLAGS="`$KRB5CONF --cflags gssapi`"
				GSSLIBS="`$KRB5CONF --libs gssapi`"
				CPPFLAGS="$CPPFLAGS $GSSCFLAGS"
			else
				AC_MSG_RESULT([no])
			fi
			AC_MSG_CHECKING([whether we are using Heimdal])
			AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <krb5.h>
				]], [[ char *tmp = heimdal_version; ]])],
				[ AC_MSG_RESULT([yes])
				AC_DEFINE([HEIMDAL], [1],
				[Define this if you are using the Heimdal
				version of Kerberos V5]) ],
				[AC_MSG_RESULT([no])
			])
		else
			CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include"
			LDFLAGS="$LDFLAGS -L${KRB5ROOT}/lib"
			AC_MSG_CHECKING([whether we are using Heimdal])
			AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <krb5.h>
				]], [[ char *tmp = heimdal_version; ]])],
					[ AC_MSG_RESULT([yes])
					 AC_DEFINE([HEIMDAL])
					 K5LIBS="-lkrb5"
					 K5LIBS="$K5LIBS -lcom_err -lasn1"
					 AC_CHECK_LIB([roken], [net_write],
					   [K5LIBS="$K5LIBS -lroken"])
					 AC_CHECK_LIB([des], [des_cbc_encrypt],
					   [K5LIBS="$K5LIBS -ldes"])
				       ], [ AC_MSG_RESULT([no])
					 K5LIBS="-lkrb5 -lk5crypto -lcom_err"
				       
			])
			AC_SEARCH_LIBS([dn_expand], [resolv])

			AC_CHECK_LIB([gssapi_krb5], [gss_init_sec_context],
				[ AC_DEFINE([GSSAPI])
				  GSSLIBS="-lgssapi_krb5" ],
				[ AC_CHECK_LIB([gssapi], [gss_init_sec_context],
					[ AC_DEFINE([GSSAPI])
					  GSSLIBS="-lgssapi" ],
					[ AC_CHECK_LIB([gss], [gss_init_sec_context],
						[ AC_DEFINE([GSSAPI])
						  GSSLIBS="-lgss" ],
						AC_MSG_WARN([Cannot find any suitable gss-api library - build may fail]))
					])
				])

			AC_CHECK_HEADER([gssapi.h], ,
				[ unset ac_cv_header_gssapi_h
				  CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include/gssapi"
				  AC_CHECK_HEADERS([gssapi.h], ,
					AC_MSG_WARN([Cannot find any suitable gss-api header - build may fail])
				  )
				]
			)

			oldCPP="$CPPFLAGS"
			CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include/gssapi"
			AC_CHECK_HEADER([gssapi_krb5.h], ,
					[ CPPFLAGS="$oldCPP" ])

		fi
		if test ! -z "$need_dash_r" ; then
			LDFLAGS="$LDFLAGS -R${KRB5ROOT}/lib"
		fi
		if test ! -z "$blibpath" ; then
			blibpath="$blibpath:${KRB5ROOT}/lib"
		fi

		AC_CHECK_HEADERS([gssapi.h gssapi/gssapi.h])
		AC_CHECK_HEADERS([gssapi_krb5.h gssapi/gssapi_krb5.h])
		AC_CHECK_HEADERS([gssapi_generic.h gssapi/gssapi_generic.h])

		AC_SEARCH_LIBS([k_hasafs], [kafs], [AC_DEFINE([USE_AFS], [1],
			[Define this if you want to use libkafs' AFS support])])

		AC_CHECK_DECLS([GSS_C_NT_HOSTBASED_SERVICE], [], [], [[
#ifdef HAVE_GSSAPI_H
# include <gssapi.h>
#elif defined(HAVE_GSSAPI_GSSAPI_H)
# include <gssapi/gssapi.h>
#endif

#ifdef HAVE_GSSAPI_GENERIC_H
# include <gssapi_generic.h>
#elif defined(HAVE_GSSAPI_GSSAPI_GENERIC_H)
# include <gssapi/gssapi_generic.h>
#endif
		]])
		saved_LIBS="$LIBS"
		LIBS="$LIBS $K5LIBS"
		AC_CHECK_FUNCS([krb5_cc_new_unique krb5_get_error_message krb5_free_error_message])
		LIBS="$saved_LIBS"

	fi
	]
)
AC_SUBST([GSSLIBS])
AC_SUBST([K5LIBS])

# Looking for programs, paths and files

PRIVSEP_PATH=/var/empty
AC_ARG_WITH([privsep-path],
	[  --with-privsep-path=xxx Path for privilege separation chroot (default=/var/empty)],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			PRIVSEP_PATH=$withval
		fi
	]
)
AC_SUBST([PRIVSEP_PATH])

AC_ARG_WITH([xauth],
	[  --with-xauth=PATH       Specify path to xauth program ],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			xauth_path=$withval
		fi
	],
	[
		TestPath="$PATH"
		TestPath="${TestPath}${PATH_SEPARATOR}/usr/X/bin"
		TestPath="${TestPath}${PATH_SEPARATOR}/usr/bin/X11"
		TestPath="${TestPath}${PATH_SEPARATOR}/usr/X11R6/bin"
		TestPath="${TestPath}${PATH_SEPARATOR}/usr/openwin/bin"
		AC_PATH_PROG([xauth_path], [xauth], , [$TestPath])
		if (test ! -z "$xauth_path" && test -x "/usr/openwin/bin/xauth") ; then
			xauth_path="/usr/openwin/bin/xauth"
		fi
	]
)

STRIP_OPT=-s
AC_ARG_ENABLE([strip],
	[  --disable-strip         Disable calling strip(1) on install],
	[
		if test "x$enableval" = "xno" ; then
			STRIP_OPT=
		fi
	]
)
AC_SUBST([STRIP_OPT])

if test -z "$xauth_path" ; then
	XAUTH_PATH="undefined"
	AC_SUBST([XAUTH_PATH])
else
	AC_DEFINE_UNQUOTED([XAUTH_PATH], ["$xauth_path"],
		[Define if xauth is found in your path])
	XAUTH_PATH=$xauth_path
	AC_SUBST([XAUTH_PATH])
fi

dnl # --with-maildir=/path/to/mail gets top priority.
dnl # if maildir is set in the platform case statement above we use that.
dnl # Otherwise we run a program to get the dir from system headers.
dnl # We first look for _PATH_MAILDIR then MAILDIR then _PATH_MAIL
dnl # If we find _PATH_MAILDIR we do nothing because that is what
dnl # session.c expects anyway. Otherwise we set to the value found
dnl # stripping any trailing slash. If for some strage reason our program
dnl # does not find what it needs, we default to /var/spool/mail.
# Check for mail directory
AC_ARG_WITH([maildir],
    [  --with-maildir=/path/to/mail    Specify your system mail directory],
    [
	if test "X$withval" != X  &&  test "x$withval" != xno  &&  \
	    test "x${withval}" != xyes; then
		AC_DEFINE_UNQUOTED([MAIL_DIRECTORY], ["$withval"],
            [Set this to your mail directory if you do not have _PATH_MAILDIR])
	    fi
     ],[
	if test "X$maildir" != "X"; then
	    AC_DEFINE_UNQUOTED([MAIL_DIRECTORY], ["$maildir"])
	else
	    AC_MSG_CHECKING([Discovering system mail directory])
	    AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <stdio.h>
#include <string.h>
#ifdef HAVE_PATHS_H
#include <paths.h>
#endif
#ifdef HAVE_MAILLOCK_H
#include <maillock.h>
#endif
#define DATA "conftest.maildir"
	]], [[
	FILE *fd;
	int rc;

	fd = fopen(DATA,"w");
	if(fd == NULL)
		exit(1);

#if defined (_PATH_MAILDIR)
	if ((rc = fprintf(fd ,"_PATH_MAILDIR:%s\n", _PATH_MAILDIR)) <0)
		exit(1);
#elif defined (MAILDIR)
	if ((rc = fprintf(fd ,"MAILDIR:%s\n", MAILDIR)) <0)
		exit(1);
#elif defined (_PATH_MAIL)
	if ((rc = fprintf(fd ,"_PATH_MAIL:%s\n", _PATH_MAIL)) <0)
		exit(1);
#else
	exit (2);
#endif

	exit(0);
		]])],
		[
	 	    maildir_what=`awk -F: '{print $1}' conftest.maildir`
		    maildir=`awk -F: '{print $2}' conftest.maildir \
			| sed 's|/$||'`
		    AC_MSG_RESULT([Using: $maildir from $maildir_what])
		    if test "x$maildir_what" != "x_PATH_MAILDIR"; then
			AC_DEFINE_UNQUOTED([MAIL_DIRECTORY], ["$maildir"])
		    fi
		],
		[
		    if test "X$ac_status" = "X2";then
# our test program didn't find it. Default to /var/spool/mail
			AC_MSG_RESULT([Using: default value of /var/spool/mail])
			AC_DEFINE_UNQUOTED([MAIL_DIRECTORY], ["/var/spool/mail"])
		     else
			AC_MSG_RESULT([*** not found ***])
		     fi
		],
		[
			AC_MSG_WARN([cross compiling: use --with-maildir=/path/to/mail])
		]
	    )
	fi
    ]
) # maildir

if test ! -z "$cross_compiling" && test "x$cross_compiling" = "xyes"; then
	AC_MSG_WARN([cross compiling: Disabling /dev/ptmx test])
	disable_ptmx_check=yes
fi
if test -z "$no_dev_ptmx" ; then
	if test "x$disable_ptmx_check" != "xyes" ; then
		AC_CHECK_FILE(["/dev/ptmx"],
			[
				AC_DEFINE_UNQUOTED([HAVE_DEV_PTMX], [1],
					[Define if you have /dev/ptmx])
				have_dev_ptmx=1
			]
		)
	fi
fi

if test ! -z "$cross_compiling" && test "x$cross_compiling" != "xyes"; then
	AC_CHECK_FILE(["/dev/ptc"],
		[
			AC_DEFINE_UNQUOTED([HAVE_DEV_PTS_AND_PTC], [1],
				[Define if you have /dev/ptc])
			have_dev_ptc=1
		]
	)
else
	AC_MSG_WARN([cross compiling: Disabling /dev/ptc test])
fi

# Options from here on. Some of these are preset by platform above
AC_ARG_WITH([mantype],
	[  --with-mantype=man|cat|doc  Set man page type],
	[
		case "$withval" in
		man|cat|doc)
			MANTYPE=$withval
			;;
		*)
			AC_MSG_ERROR([invalid man type: $withval])
			;;
		esac
	]
)
if test -z "$MANTYPE"; then
	TestPath="/usr/bin${PATH_SEPARATOR}/usr/ucb"
	AC_PATH_PROGS([NROFF], [nroff awf], [/bin/false], [$TestPath])
	if ${NROFF} -mdoc ${srcdir}/ssh.1 >/dev/null 2>&1; then
		MANTYPE=doc
	elif ${NROFF} -man ${srcdir}/ssh.1 >/dev/null 2>&1; then
		MANTYPE=man
	else
		MANTYPE=cat
	fi
fi
AC_SUBST([MANTYPE])
if test "$MANTYPE" = "doc"; then
	mansubdir=man;
else
	mansubdir=$MANTYPE;
fi
AC_SUBST([mansubdir])

# Check whether to enable MD5 passwords
MD5_MSG="no"
AC_ARG_WITH([md5-passwords],
	[  --with-md5-passwords    Enable use of MD5 passwords],
	[
		if test "x$withval" != "xno" ; then
			AC_DEFINE([HAVE_MD5_PASSWORDS], [1],
				[Define if you want to allow MD5 passwords])
			MD5_MSG="yes"
		fi
	]
)

# Whether to disable shadow password support
AC_ARG_WITH([shadow],
	[  --without-shadow        Disable shadow password support],
	[
		if test "x$withval" = "xno" ; then
			AC_DEFINE([DISABLE_SHADOW])
			disable_shadow=yes
		fi
	]
)

if test -z "$disable_shadow" ; then
	AC_MSG_CHECKING([if the systems has expire shadow information])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <shadow.h>
struct spwd sp;
		]], [[ sp.sp_expire = sp.sp_lstchg = sp.sp_inact = 0; ]])],
		[ sp_expire_available=yes ], [
	])

	if test "x$sp_expire_available" = "xyes" ; then
		AC_MSG_RESULT([yes])
		AC_DEFINE([HAS_SHADOW_EXPIRE], [1],
		    [Define if you want to use shadow password expire field])
	else
		AC_MSG_RESULT([no])
	fi
fi

# Use ip address instead of hostname in $DISPLAY
if test ! -z "$IPADDR_IN_DISPLAY" ; then
	DISPLAY_HACK_MSG="yes"
	AC_DEFINE([IPADDR_IN_DISPLAY], [1],
		[Define if you need to use IP address
		instead of hostname in $DISPLAY])
else
	DISPLAY_HACK_MSG="no"
	AC_ARG_WITH([ipaddr-display],
		[  --with-ipaddr-display   Use ip address instead of hostname in \$DISPLAY],
		[
			if test "x$withval" != "xno" ; then
				AC_DEFINE([IPADDR_IN_DISPLAY])
				DISPLAY_HACK_MSG="yes"
			fi
		]
	)
fi

# check for /etc/default/login and use it if present.
AC_ARG_ENABLE([etc-default-login],
	[  --disable-etc-default-login Disable using PATH from /etc/default/login [no]],
	[ if test "x$enableval" = "xno"; then
		AC_MSG_NOTICE([/etc/default/login handling disabled])
		etc_default_login=no
	  else
		etc_default_login=yes
	  fi ],
	[ if test ! -z "$cross_compiling" && test "x$cross_compiling" = "xyes";
	  then
		AC_MSG_WARN([cross compiling: not checking /etc/default/login])
		etc_default_login=no
	  else
		etc_default_login=yes
	  fi ]
)

if test "x$etc_default_login" != "xno"; then
	AC_CHECK_FILE(["/etc/default/login"],
	    [ external_path_file=/etc/default/login ])
	if test "x$external_path_file" = "x/etc/default/login"; then
		AC_DEFINE([HAVE_ETC_DEFAULT_LOGIN], [1],
			[Define if your system has /etc/default/login])
	fi
fi

dnl BSD systems use /etc/login.conf so --with-default-path= has no effect
if test $ac_cv_func_login_getcapbool = "yes" && \
	test $ac_cv_header_login_cap_h = "yes" ; then
	external_path_file=/etc/login.conf
fi

# Whether to mess with the default path
SERVER_PATH_MSG="(default)"
AC_ARG_WITH([default-path],
	[  --with-default-path=    Specify default \$PATH environment for server],
	[
		if test "x$external_path_file" = "x/etc/login.conf" ; then
			AC_MSG_WARN([
--with-default-path=PATH has no effect on this system.
Edit /etc/login.conf instead.])
		elif test "x$withval" != "xno" ; then
			if test ! -z "$external_path_file" ; then
				AC_MSG_WARN([
--with-default-path=PATH will only be used if PATH is not defined in
$external_path_file .])
			fi
			user_path="$withval"
			SERVER_PATH_MSG="$withval"
		fi
	],
	[ if test "x$external_path_file" = "x/etc/login.conf" ; then
		AC_MSG_WARN([Make sure the path to scp is in /etc/login.conf])
	else
		if test ! -z "$external_path_file" ; then
			AC_MSG_WARN([
If PATH is defined in $external_path_file, ensure the path to scp is included,
otherwise scp will not work.])
		fi
		AC_RUN_IFELSE(
			[AC_LANG_PROGRAM([[
/* find out what STDPATH is */
#include <stdio.h>
#ifdef HAVE_PATHS_H
# include <paths.h>
#endif
#ifndef _PATH_STDPATH
# ifdef _PATH_USERPATH	/* Irix */
#  define _PATH_STDPATH _PATH_USERPATH
# else
#  define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
# endif
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#define DATA "conftest.stdpath"
			]], [[
	FILE *fd;
	int rc;

	fd = fopen(DATA,"w");
	if(fd == NULL)
		exit(1);

	if ((rc = fprintf(fd,"%s", _PATH_STDPATH)) < 0)
		exit(1);

	exit(0);
		]])],
		[ user_path=`cat conftest.stdpath` ],
		[ user_path="/usr/bin:/bin:/usr/sbin:/sbin" ],
		[ user_path="/usr/bin:/bin:/usr/sbin:/sbin" ]
	)
# make sure $bindir is in USER_PATH so scp will work
		t_bindir="${bindir}"
		while echo "${t_bindir}" | egrep '\$\{|NONE/' >/dev/null 2>&1; do
			t_bindir=`eval echo ${t_bindir}`
			case $t_bindir in
				NONE/*) t_bindir=`echo $t_bindir | sed "s~NONE~$prefix~"` ;;
			esac
			case $t_bindir in
				NONE/*) t_bindir=`echo $t_bindir | sed "s~NONE~$ac_default_prefix~"` ;;
			esac
		done
		echo $user_path | grep ":$t_bindir"  > /dev/null 2>&1
		if test $? -ne 0  ; then
			echo $user_path | grep "^$t_bindir"  > /dev/null 2>&1
			if test $? -ne 0  ; then
				user_path=$user_path:$t_bindir
				AC_MSG_RESULT([Adding $t_bindir to USER_PATH so scp will work])
			fi
		fi
	fi ]
)
if test "x$external_path_file" != "x/etc/login.conf" ; then
	AC_DEFINE_UNQUOTED([USER_PATH], ["$user_path"], [Specify default $PATH])
	AC_SUBST([user_path])
fi

# Set superuser path separately to user path
AC_ARG_WITH([superuser-path],
	[  --with-superuser-path=  Specify different path for super-user],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			AC_DEFINE_UNQUOTED([SUPERUSER_PATH], ["$withval"],
				[Define if you want a different $PATH
				for the superuser])
			superuser_path=$withval
		fi
	]
)


AC_MSG_CHECKING([if we need to convert IPv4 in IPv6-mapped addresses])
IPV4_IN6_HACK_MSG="no"
AC_ARG_WITH(4in6,
	[  --with-4in6             Check for and convert IPv4 in IPv6 mapped addresses],
	[
		if test "x$withval" != "xno" ; then
			AC_MSG_RESULT([yes])
			AC_DEFINE([IPV4_IN_IPV6], [1],
				[Detect IPv4 in IPv6 mapped addresses
				and treat as IPv4])
			IPV4_IN6_HACK_MSG="yes"
		else
			AC_MSG_RESULT([no])
		fi
	], [
		if test "x$inet6_default_4in6" = "xyes"; then
			AC_MSG_RESULT([yes (default)])
			AC_DEFINE([IPV4_IN_IPV6])
			IPV4_IN6_HACK_MSG="yes"
		else
			AC_MSG_RESULT([no (default)])
		fi
	]
)

# Whether to enable BSD auth support
BSD_AUTH_MSG=no
AC_ARG_WITH([bsd-auth],
	[  --with-bsd-auth         Enable BSD auth support],
	[
		if test "x$withval" != "xno" ; then
			AC_DEFINE([BSD_AUTH], [1],
				[Define if you have BSD auth support])
			BSD_AUTH_MSG=yes
		fi
	]
)

# Where to place sshd.pid
piddir=/var/run
# make sure the directory exists
if test ! -d $piddir ; then
	piddir=`eval echo ${sysconfdir}`
	case $piddir in
		NONE/*) piddir=`echo $piddir | sed "s~NONE~$ac_default_prefix~"` ;;
	esac
fi

AC_ARG_WITH([pid-dir],
	[  --with-pid-dir=PATH     Specify location of ssh.pid file],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			piddir=$withval
			if test ! -d $piddir ; then
			AC_MSG_WARN([** no $piddir directory on this system **])
			fi
		fi
	]
)

AC_DEFINE_UNQUOTED([_PATH_SSH_PIDDIR], ["$piddir"], 
	[Specify location of ssh.pid])
AC_SUBST([piddir])

dnl allow user to disable some login recording features
AC_ARG_ENABLE([lastlog],
	[  --disable-lastlog       disable use of lastlog even if detected [no]],
	[
		if test "x$enableval" = "xno" ; then
			AC_DEFINE([DISABLE_LASTLOG])
		fi
	]
)
AC_ARG_ENABLE([utmp],
	[  --disable-utmp          disable use of utmp even if detected [no]],
	[
		if test "x$enableval" = "xno" ; then
			AC_DEFINE([DISABLE_UTMP])
		fi
	]
)
AC_ARG_ENABLE([utmpx],
	[  --disable-utmpx         disable use of utmpx even if detected [no]],
	[
		if test "x$enableval" = "xno" ; then
			AC_DEFINE([DISABLE_UTMPX], [1],
				[Define if you don't want to use utmpx])
		fi
	]
)
AC_ARG_ENABLE([wtmp],
	[  --disable-wtmp          disable use of wtmp even if detected [no]],
	[
		if test "x$enableval" = "xno" ; then
			AC_DEFINE([DISABLE_WTMP])
		fi
	]
)
AC_ARG_ENABLE([wtmpx],
	[  --disable-wtmpx         disable use of wtmpx even if detected [no]],
	[
		if test "x$enableval" = "xno" ; then
			AC_DEFINE([DISABLE_WTMPX], [1],
				[Define if you don't want to use wtmpx])
		fi
	]
)
AC_ARG_ENABLE([libutil],
	[  --disable-libutil       disable use of libutil (login() etc.) [no]],
	[
		if test "x$enableval" = "xno" ; then
			AC_DEFINE([DISABLE_LOGIN])
		fi
	]
)
AC_ARG_ENABLE([pututline],
	[  --disable-pututline     disable use of pututline() etc. ([uw]tmp) [no]],
	[
		if test "x$enableval" = "xno" ; then
			AC_DEFINE([DISABLE_PUTUTLINE], [1],
				[Define if you don't want to use pututline()
				etc. to write [uw]tmp])
		fi
	]
)
AC_ARG_ENABLE([pututxline],
	[  --disable-pututxline    disable use of pututxline() etc. ([uw]tmpx) [no]],
	[
		if test "x$enableval" = "xno" ; then
			AC_DEFINE([DISABLE_PUTUTXLINE], [1],
				[Define if you don't want to use pututxline()
				etc. to write [uw]tmpx])
		fi
	]
)
AC_ARG_WITH([lastlog],
  [  --with-lastlog=FILE|DIR specify lastlog location [common locations]],
	[
		if test "x$withval" = "xno" ; then
			AC_DEFINE([DISABLE_LASTLOG])
		elif test -n "$withval"  &&  test "x${withval}" != "xyes"; then
			conf_lastlog_location=$withval
		fi
	]
)

dnl lastlog, [uw]tmpx? detection
dnl  NOTE: set the paths in the platform section to avoid the
dnl   need for command-line parameters
dnl lastlog and [uw]tmp are subject to a file search if all else fails

dnl lastlog detection
dnl  NOTE: the code itself will detect if lastlog is a directory
AC_MSG_CHECKING([if your system defines LASTLOG_FILE])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <utmp.h>
#ifdef HAVE_LASTLOG_H
#  include <lastlog.h>
#endif
#ifdef HAVE_PATHS_H
#  include <paths.h>
#endif
#ifdef HAVE_LOGIN_H
# include <login.h>
#endif
	]], [[ char *lastlog = LASTLOG_FILE; ]])],
		[ AC_MSG_RESULT([yes]) ],
		[
		AC_MSG_RESULT([no])
		AC_MSG_CHECKING([if your system defines _PATH_LASTLOG])
		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <utmp.h>
#ifdef HAVE_LASTLOG_H
#  include <lastlog.h>
#endif
#ifdef HAVE_PATHS_H
#  include <paths.h>
#endif
		]], [[ char *lastlog = _PATH_LASTLOG; ]])],
		[ AC_MSG_RESULT([yes]) ],
		[
			AC_MSG_RESULT([no])
			system_lastlog_path=no
		])
])

if test -z "$conf_lastlog_location"; then
	if test x"$system_lastlog_path" = x"no" ; then
		for f in /var/log/lastlog /usr/adm/lastlog /var/adm/lastlog /etc/security/lastlog ; do
				if (test -d "$f" || test -f "$f") ; then
					conf_lastlog_location=$f
				fi
		done
		if test -z "$conf_lastlog_location"; then
			AC_MSG_WARN([** Cannot find lastlog **])
			dnl Don't define DISABLE_LASTLOG - that means we don't try wtmp/wtmpx
		fi
	fi
fi

if test -n "$conf_lastlog_location"; then
	AC_DEFINE_UNQUOTED([CONF_LASTLOG_FILE], ["$conf_lastlog_location"],
		[Define if you want to specify the path to your lastlog file])
fi

dnl utmp detection
AC_MSG_CHECKING([if your system defines UTMP_FILE])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <utmp.h>
#ifdef HAVE_PATHS_H
#  include <paths.h>
#endif
	]], [[ char *utmp = UTMP_FILE; ]])],
	[ AC_MSG_RESULT([yes]) ],
	[ AC_MSG_RESULT([no])
	  system_utmp_path=no 
])
if test -z "$conf_utmp_location"; then
	if test x"$system_utmp_path" = x"no" ; then
		for f in /etc/utmp /usr/adm/utmp /var/run/utmp; do
			if test -f $f ; then
				conf_utmp_location=$f
			fi
		done
		if test -z "$conf_utmp_location"; then
			AC_DEFINE([DISABLE_UTMP])
		fi
	fi
fi
if test -n "$conf_utmp_location"; then
	AC_DEFINE_UNQUOTED([CONF_UTMP_FILE], ["$conf_utmp_location"],
		[Define if you want to specify the path to your utmp file])
fi

dnl wtmp detection
AC_MSG_CHECKING([if your system defines WTMP_FILE])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <utmp.h>
#ifdef HAVE_PATHS_H
#  include <paths.h>
#endif
	]], [[ char *wtmp = WTMP_FILE; ]])],
	[ AC_MSG_RESULT([yes]) ],
	[ AC_MSG_RESULT([no])
	  system_wtmp_path=no 
])
if test -z "$conf_wtmp_location"; then
	if test x"$system_wtmp_path" = x"no" ; then
		for f in /usr/adm/wtmp /var/log/wtmp; do
			if test -f $f ; then
				conf_wtmp_location=$f
			fi
		done
		if test -z "$conf_wtmp_location"; then
			AC_DEFINE([DISABLE_WTMP])
		fi
	fi
fi
if test -n "$conf_wtmp_location"; then
	AC_DEFINE_UNQUOTED([CONF_WTMP_FILE], ["$conf_wtmp_location"],
		[Define if you want to specify the path to your wtmp file])
fi

dnl wtmpx detection
AC_MSG_CHECKING([if your system defines WTMPX_FILE])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <utmp.h>
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif
#ifdef HAVE_PATHS_H
#  include <paths.h>
#endif
	]], [[ char *wtmpx = WTMPX_FILE; ]])],
	[ AC_MSG_RESULT([yes]) ],
	[ AC_MSG_RESULT([no])
	  system_wtmpx_path=no 
])
if test -z "$conf_wtmpx_location"; then
	if test x"$system_wtmpx_path" = x"no" ; then
		AC_DEFINE([DISABLE_WTMPX])
	fi
else
	AC_DEFINE_UNQUOTED([CONF_WTMPX_FILE], ["$conf_wtmpx_location"],
		[Define if you want to specify the path to your wtmpx file])
fi


if test ! -z "$blibpath" ; then
	LDFLAGS="$LDFLAGS $blibflags$blibpath"
	AC_MSG_WARN([Please check and edit blibpath in LDFLAGS in Makefile])
fi

AC_CHECK_MEMBER([struct lastlog.ll_line], [], [
    if test x$SKIP_DISABLE_LASTLOG_DEFINE != "xyes" ; then
	AC_DEFINE([DISABLE_LASTLOG])
    fi
	], [
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif
#ifdef HAVE_LASTLOG_H
#include <lastlog.h>
#endif
	])

AC_CHECK_MEMBER([struct utmp.ut_line], [], [
	AC_DEFINE([DISABLE_UTMP])
	AC_DEFINE([DISABLE_WTMP])
	], [
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif
#ifdef HAVE_LASTLOG_H
#include <lastlog.h>
#endif
	])

dnl Adding -Werror to CFLAGS early prevents configure tests from running.
dnl Add now.
CFLAGS="$CFLAGS $werror_flags"

if test "x$ac_cv_func_getaddrinfo" != "xyes" ; then
	TEST_SSH_IPV6=no
else
	TEST_SSH_IPV6=yes
fi
AC_CHECK_DECL([BROKEN_GETADDRINFO],  [TEST_SSH_IPV6=no])
AC_SUBST([TEST_SSH_IPV6], [$TEST_SSH_IPV6])
AC_SUBST([TEST_MALLOC_OPTIONS], [$TEST_MALLOC_OPTIONS])
AC_SUBST([UNSUPPORTED_ALGORITHMS], [$unsupported_algorithms])

AC_EXEEXT
AC_CONFIG_FILES([Makefile buildpkg.sh opensshd.init openssh.xml \
	openbsd-compat/Makefile openbsd-compat/regress/Makefile \
	survey.sh])
AC_OUTPUT

# Print summary of options

# Someone please show me a better way :)
A=`eval echo ${prefix}` ; A=`eval echo ${A}`
B=`eval echo ${bindir}` ; B=`eval echo ${B}`
C=`eval echo ${sbindir}` ; C=`eval echo ${C}`
D=`eval echo ${sysconfdir}` ; D=`eval echo ${D}`
E=`eval echo ${libexecdir}/ssh-askpass` ; E=`eval echo ${E}`
F=`eval echo ${mandir}/${mansubdir}X` ; F=`eval echo ${F}`
G=`eval echo ${piddir}` ; G=`eval echo ${G}`
H=`eval echo ${PRIVSEP_PATH}` ; H=`eval echo ${H}`
I=`eval echo ${user_path}` ; I=`eval echo ${I}`
J=`eval echo ${superuser_path}` ; J=`eval echo ${J}`

echo ""
echo "OpenSSH has been configured with the following options:"
echo "                     User binaries: $B"
echo "                   System binaries: $C"
echo "               Configuration files: $D"
echo "                   Askpass program: $E"
echo "                      Manual pages: $F"
echo "                          PID file: $G"
echo "  Privilege separation chroot path: $H"
if test "x$external_path_file" = "x/etc/login.conf" ; then
echo "   At runtime, sshd will use the path defined in $external_path_file"
echo "   Make sure the path to scp is present, otherwise scp will not work"
else
echo "            sshd default user PATH: $I"
	if test ! -z "$external_path_file"; then
echo "   (If PATH is set in $external_path_file it will be used instead. If"
echo "   used, ensure the path to scp is present, otherwise scp will not work.)"
	fi
fi
if test ! -z "$superuser_path" ; then
echo "          sshd superuser user PATH: $J"
fi
echo "                    Manpage format: $MANTYPE"
echo "                       PAM support: $PAM_MSG"
echo "                   OSF SIA support: $SIA_MSG"
echo "                 KerberosV support: $KRB5_MSG"
echo "                   SELinux support: $SELINUX_MSG"
echo "                 Smartcard support: $SCARD_MSG"
echo "                     S/KEY support: $SKEY_MSG"
echo "              MD5 password support: $MD5_MSG"
echo "                   libedit support: $LIBEDIT_MSG"
echo "  Solaris process contract support: $SPC_MSG"
echo "           Solaris project support: $SP_MSG"
echo "       IP address in \$DISPLAY hack: $DISPLAY_HACK_MSG"
echo "           Translate v4 in v6 hack: $IPV4_IN6_HACK_MSG"
echo "                  BSD Auth support: $BSD_AUTH_MSG"
echo "              Random number source: $RAND_MSG"
echo "             Privsep sandbox style: $SANDBOX_STYLE"

echo ""

echo "              Host: ${host}"
echo "          Compiler: ${CC}"
echo "    Compiler flags: ${CFLAGS}"
echo "Preprocessor flags: ${CPPFLAGS}"
echo "      Linker flags: ${LDFLAGS}"
echo "         Libraries: ${LIBS}"
if test ! -z "${SSHDLIBS}"; then
echo "         +for sshd: ${SSHDLIBS}"
fi
if test ! -z "${SSHLIBS}"; then
echo "          +for ssh: ${SSHLIBS}"
fi

echo ""

if test "x$MAKE_PACKAGE_SUPPORTED" = "xyes" ; then
	echo "SVR4 style packages are supported with \"make package\""
	echo ""
fi

if test "x$PAM_MSG" = "xyes" ; then
	echo "PAM is enabled. You may need to install a PAM control file "
	echo "for sshd, otherwise password authentication may fail. "
	echo "Example PAM control files can be found in the contrib/ "
	echo "subdirectory"
	echo ""
fi

if test ! -z "$NO_PEERCHECK" ; then
	echo "WARNING: the operating system that you are using does not"
	echo "appear to support getpeereid(), getpeerucred() or the"
	echo "SO_PEERCRED getsockopt() option. These facilities are used to"
	echo "enforce security checks to prevent unauthorised connections to"
	echo "ssh-agent. Their absence increases the risk that a malicious"
	echo "user can connect to your agent."
	echo ""
fi

if test "$AUDIT_MODULE" = "bsm" ; then
	echo "WARNING: BSM audit support is currently considered EXPERIMENTAL."
	echo "See the Solaris section in README.platform for details."
fi