summaryrefslogtreecommitdiff
path: root/configure.ac
blob: 6c8621ce56bcac93ed4d4bd5d73a04720f05eec8 (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
# $Id: configure.ac,v 1.178 2003/12/18 01:52:19 dtucker Exp $

AC_INIT
AC_CONFIG_SRCDIR([ssh.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_PATH_PROG(AR, ar)
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)

# 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")
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

if test -z "$LD" ; then
	LD=$CC
fi
AC_SUBST(LD)
	
AC_C_INLINE
if test "$GCC" = "yes" || test "$GCC" = "egcs"; then
	CFLAGS="$CFLAGS -Wall -Wpointer-arith -Wno-uninitialized"
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
	]
)

# Check for some target-specific stuff
case "$host" in
*-*-aix*)
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	LDFLAGS="$LDFLAGS -L/usr/local/lib"
	AC_MSG_CHECKING([how to specify blibpath for linker ($LD)])
	if (test -z "$blibpath"); then
		blibpath="/usr/lib:/lib:/usr/local/lib"
	fi
	saved_LDFLAGS="$LDFLAGS"
	for tryflags in -blibpath: -Wl,-blibpath: -Wl,-rpath, ;do
		if (test -z "$blibflags"); then
			LDFLAGS="$saved_LDFLAGS $tryflags$blibpath"
			AC_TRY_LINK([], [], [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)],
		[AC_CHECK_LIB(s,authenticate,
			[ AC_DEFINE(WITH_AIXAUTHENTICATE)
				LIBS="$LIBS -ls"
			])
		])
	dnl Check if loginfailed is declared and takes 4 arguments (AIX >= 5.2)
	AC_CHECK_DECL(loginfailed,
		 [AC_MSG_CHECKING(if loginfailed takes 4 arguments)
		  AC_TRY_COMPILE(
			[#include <usersec.h>],
			[(void)loginfailed("user","host","tty",0);],
			[AC_MSG_RESULT(yes)
			 AC_DEFINE(AIX_LOGINFAILED_4ARG)],
			[AC_MSG_RESULT(no)]
		)],
		[],
		[#include <usersec.h>]
	)
	AC_CHECK_FUNCS(setauthdb)
	AC_DEFINE(BROKEN_GETADDRINFO)
	AC_DEFINE(BROKEN_REALPATH)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	dnl AIX handles lastlog as part of its login message
	AC_DEFINE(DISABLE_LASTLOG)
	AC_DEFINE(LOGIN_NEEDS_UTMPX)
	AC_DEFINE(SPT_TYPE,SPT_REUSEARGV)
	;;
*-*-cygwin*)
	check_for_libcrypt_later=1
	LIBS="$LIBS /usr/lib/textmode.o"
	AC_DEFINE(HAVE_CYGWIN)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(DISABLE_SHADOW)
	AC_DEFINE(IP_TOS_IS_BROKEN)
	AC_DEFINE(NO_X11_UNIX_SOCKETS)
	AC_DEFINE(NO_IPPORT_RESERVED_CONCEPT)
	AC_DEFINE(DISABLE_FD_PASSING)
	AC_DEFINE(SETGROUPS_NOOP)
	;;
*-*-dgux*)
	AC_DEFINE(IP_TOS_IS_BROKEN)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;
*-*-darwin*)
	AC_MSG_CHECKING(if we have working getaddrinfo)
	AC_TRY_RUN([#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)],
	[AC_MSG_RESULT(assume it is working)])
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;
*-*-hpux10.26)
	if test -z "$GCC"; then
		CFLAGS="$CFLAGS -Ae"
	fi
	CPPFLAGS="$CPPFLAGS -D_HPUX_SOURCE -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1"
	IPADDR_IN_DISPLAY=yes
	AC_DEFINE(HAVE_SECUREWARE)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(LOGIN_NO_ENDOPT)
	AC_DEFINE(LOGIN_NEEDS_UTMPX)
	AC_DEFINE(DISABLE_UTMP)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*")
	AC_DEFINE(SPT_TYPE,SPT_PSTAT)
	LIBS="$LIBS -lsec -lsecpw"
	AC_CHECK_LIB(xnet, t_error, ,AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***]))
	disable_ptmx_check=yes
	;;
*-*-hpux10*)
	if test -z "$GCC"; then
		CFLAGS="$CFLAGS -Ae"
	fi
	CPPFLAGS="$CPPFLAGS -D_HPUX_SOURCE -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1"
	IPADDR_IN_DISPLAY=yes
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(LOGIN_NO_ENDOPT)
	AC_DEFINE(LOGIN_NEEDS_UTMPX)
	AC_DEFINE(DISABLE_UTMP)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*")
	AC_DEFINE(SPT_TYPE,SPT_PSTAT)
	LIBS="$LIBS -lsec"
	AC_CHECK_LIB(xnet, t_error, ,AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***]))
	;;
*-*-hpux11*)
	CPPFLAGS="$CPPFLAGS -D_HPUX_SOURCE -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1"
	IPADDR_IN_DISPLAY=yes
	AC_DEFINE(PAM_SUN_CODEBASE)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(LOGIN_NO_ENDOPT)
	AC_DEFINE(LOGIN_NEEDS_UTMPX)
	AC_DEFINE(DISABLE_UTMP)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*")
	AC_DEFINE(SPT_TYPE,SPT_PSTAT)
	LIBS="$LIBS -lsec"
	AC_CHECK_LIB(xnet, t_error, ,AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***]))
	;;
*-*-irix5*)
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	LDFLAGS="$LDFLAGS"
	PATH="$PATH:/usr/etc"
	AC_DEFINE(BROKEN_INET_NTOA)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE(WITH_ABBREV_NO_TTY)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
	;;
*-*-irix6*)
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	LDFLAGS="$LDFLAGS"
	PATH="$PATH:/usr/etc"
	AC_DEFINE(WITH_IRIX_ARRAY)
	AC_DEFINE(WITH_IRIX_PROJECT)
	AC_DEFINE(WITH_IRIX_AUDIT)
	AC_CHECK_FUNC(jlimit_startjob, [AC_DEFINE(WITH_IRIX_JOBS)])
	AC_DEFINE(BROKEN_INET_NTOA)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE(WITH_ABBREV_NO_TTY)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
	;;
*-*-linux*)
	no_dev_ptmx=1
	check_for_libcrypt_later=1
	check_for_openpty_ctty_bug=1
	AC_DEFINE(DONT_TRY_OTHER_AF)
	AC_DEFINE(PAM_TTY_KLUDGE)
	AC_DEFINE(LOCKED_PASSWD_PREFIX, "!!")
	AC_DEFINE(SPT_TYPE,SPT_REUSEARGV)
	inet6_default_4in6=yes
	case `uname -r` in
	1.*|2.0.*)
		AC_DEFINE(BROKEN_CMSG_TYPE)
		;;
	esac
	;;
mips-sony-bsd|mips-sony-newsos4)
	AC_DEFINE(HAVE_NEWS4)
	SONY=1
	;;
*-*-netbsd*)
	check_for_libcrypt_before=1
	if test "x$withval" != "xno" ; then	
		need_dash_r=1
	fi
	;;
*-*-freebsd*)
	check_for_libcrypt_later=1
	;;
*-*-bsdi*)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;
*-next-*)
	conf_lastlog_location="/usr/adm/lastlog"
	conf_utmp_location=/etc/utmp
	conf_wtmp_location=/usr/adm/wtmp
	MAIL=/usr/spool/mail
	AC_DEFINE(HAVE_NEXT)
	AC_DEFINE(BROKEN_REALPATH)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(BROKEN_SAVED_UIDS)
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	CFLAGS="$CFLAGS"
	;;
*-*-solaris*)
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	if test "x$withval" = "xno" ; then	
		LDFLAGS="$LDFLAGS -L/usr/local/lib"
	else
		LDFLAGS="$LDFLAGS -L/usr/local/lib -R/usr/local/lib"
		need_dash_r=1
	fi
	AC_DEFINE(PAM_SUN_CODEBASE)
	AC_DEFINE(LOGIN_NEEDS_UTMPX)
	AC_DEFINE(LOGIN_NEEDS_TERM)
	AC_DEFINE(PAM_TTY_KLUDGE)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
	# Pushing STREAMS modules will cause sshd to acquire a controlling tty.
	AC_DEFINE(SSHD_ACQUIRES_CTTY)
	external_path_file=/etc/default/login
	# hardwire lastlog location (can't detect it on some versions)
	conf_lastlog_location="/var/adm/lastlog"
	AC_MSG_CHECKING(for obsolete utmp and wtmp in solaris2.x)
	sol2ver=`echo "$host"| sed -e 's/.*[[0-9]]\.//'`
	if test "$sol2ver" -ge 8; then
		AC_MSG_RESULT(yes)
		AC_DEFINE(DISABLE_UTMP)
		AC_DEFINE(DISABLE_WTMP)
	else
		AC_MSG_RESULT(no)
	fi
	;;
*-*-sunos4*)
	CPPFLAGS="$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*)
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	LDFLAGS="$LDFLAGS -L/usr/local/lib"
	LIBS="$LIBS -lc89"
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(SSHD_ACQUIRES_CTTY)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;
*-sni-sysv*)
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	# /usr/ucblib MUST NOT be searched on ReliantUNIX
	LDFLAGS="$LDFLAGS -L/usr/local/lib"
	AC_CHECK_LIB(dl, dlsym, ,)
	IPADDR_IN_DISPLAY=yes
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(IP_TOS_IS_BROKEN)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE(SSHD_ACQUIRES_CTTY)
	external_path_file=/etc/default/login
	# /usr/ucblib/libucb.a no longer needed on ReliantUNIX
	# Attention: always take care to bind libsocket and libnsl before libc,
	# otherwise you will find lots of "SIOCGPGRP errno 22" on syslog
	;;
*-*-sysv4.2*)
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	LDFLAGS="$LDFLAGS -L/usr/local/lib"
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;
*-*-sysv5*)
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	LDFLAGS="$LDFLAGS -L/usr/local/lib"
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;
*-*-sysv*)
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	LDFLAGS="$LDFLAGS -L/usr/local/lib"
	;;
*-*-sco3.2v4*)
	CPPFLAGS="$CPPFLAGS -Dftruncate=chsize -I/usr/local/include"
	LDFLAGS="$LDFLAGS -L/usr/local/lib"
	LIBS="$LIBS -los -lprot -lx -ltinfo -lm"
	RANLIB=true
	no_dev_ptmx=1
	AC_DEFINE(BROKEN_SYS_TERMIO_H)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(HAVE_SECUREWARE)
	AC_DEFINE(DISABLE_SHADOW)
	AC_DEFINE(BROKEN_SAVED_UIDS)
	AC_DEFINE(WITH_ABBREV_NO_TTY)
	AC_CHECK_FUNCS(getluid setluid)
	MANTYPE=man
	do_sco3_extra_lib_check=yes
	;;
*-*-sco3.2v5*)
	if test -z "$GCC"; then
		CFLAGS="$CFLAGS -belf"
	fi
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	LDFLAGS="$LDFLAGS -L/usr/local/lib"
	LIBS="$LIBS -lprot -lx -ltinfo -lm"
	no_dev_ptmx=1
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(HAVE_SECUREWARE)
	AC_DEFINE(DISABLE_SHADOW)
	AC_DEFINE(DISABLE_FD_PASSING)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE(WITH_ABBREV_NO_TTY)
	AC_CHECK_FUNCS(getluid setluid)
	MANTYPE=man
	;;
*-*-unicosmk*)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(DISABLE_FD_PASSING)
	LDFLAGS="$LDFLAGS"
	LIBS="$LIBS -lgen -lrsc -lshare -luex -lacm"
	MANTYPE=cat
	;;
*-*-unicosmp*)
	AC_DEFINE(WITH_ABBREV_NO_TTY)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(DISABLE_FD_PASSING)
	LDFLAGS="$LDFLAGS"
	LIBS="$LIBS -lgen -lacid"
	MANTYPE=cat
	;;
*-*-unicos*)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(DISABLE_FD_PASSING)
	AC_DEFINE(NO_SSH_LASTLOG)
	LDFLAGS="$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 "$no_osfsia" ; then
		if test -f /etc/sia/matrix.conf; then
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_OSF_SIA)
			AC_DEFINE(DISABLE_LOGIN)
			AC_DEFINE(DISABLE_FD_PASSING)
			LIBS="$LIBS -lsecurity -ldb -lm -laud"
		else
			AC_MSG_RESULT(no)
			AC_DEFINE(LOCKED_PASSWD_SUBSTR, "Nologin")
		fi
	fi
	AC_DEFINE(BROKEN_GETADDRINFO)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;

*-*-nto-qnx)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(NO_X11_UNIX_SOCKETS)
	AC_DEFINE(MISSING_NFDBITS)
	AC_DEFINE(MISSING_HOWMANY)
	AC_DEFINE(MISSING_FD_MASK)
	;;
esac

# Allow user to specify flags
AC_ARG_WITH(cflags,
	[  --with-cflags           Specify additional flags to pass to compiler],
	[
		if test "x$withval" != "xno" ; then
			CFLAGS="$CFLAGS $withval"
		fi
	]	
)
AC_ARG_WITH(cppflags,
	[  --with-cppflags         Specify additional flags to pass to preprocessor] ,
	[
		if test "x$withval" != "xno"; then
			CPPFLAGS="$CPPFLAGS $withval"
		fi
	]
)
AC_ARG_WITH(ldflags,
	[  --with-ldflags          Specify additional flags to pass to linker],
	[
		if test "x$withval" != "xno" ; then
			LDFLAGS="$LDFLAGS $withval"
		fi
	]	
)
AC_ARG_WITH(libs,
	[  --with-libs             Specify additional libraries to link with],
	[
		if test "x$withval" != "xno" ; then
			LIBS="$LIBS $withval"
		fi
	]	
)

AC_MSG_CHECKING(compiler and flags for sanity)
AC_TRY_RUN([
#include <stdio.h>
int main(){exit(0);}
	],
	[	AC_MSG_RESULT(yes) ],
	[
		AC_MSG_RESULT(no)
		AC_MSG_ERROR([*** compiler cannot create working executables, check config.log ***])
	]
)

# Checks for header files.
AC_CHECK_HEADERS(bstring.h crypt.h endian.h features.h floatingpoint.h \
	getopt.h glob.h ia.h lastlog.h limits.h login.h \
	login_cap.h maillock.h netdb.h netgroup.h \
	netinet/in_systm.h paths.h pty.h readpassphrase.h \
	rpc/types.h security/pam_appl.h shadow.h stddef.h stdint.h \
	strings.h sys/strtio.h sys/audit.h sys/bitypes.h sys/bsdtty.h \
	sys/cdefs.h sys/mman.h sys/pstat.h sys/select.h sys/stat.h \
	sys/stropts.h sys/sysmacros.h sys/time.h sys/timers.h \
	sys/un.h time.h tmpdir.h ttyent.h usersec.h \
	util.h utime.h utmp.h utmpx.h vis.h)

# Checks for libraries.
AC_CHECK_FUNC(yp_match, , AC_CHECK_LIB(nsl, yp_match))
AC_CHECK_FUNC(setsockopt, , AC_CHECK_LIB(socket, setsockopt))

dnl SCO OS3 needs this for libwrap
if test "x$with_tcp_wrappers" != "xno" ; then
    if test "x$do_sco3_extra_lib_check" = "xyes" ; then
	AC_CHECK_LIB(rpc, innetgr, LIBS="-lrpc -lyp -lrpc $LIBS" , , -lyp -lrpc)
    fi
fi

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_TRY_RUN(
				[
#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" ]
			)
			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))

dnl zlib is required
AC_ARG_WITH(zlib,
	[  --with-zlib=PATH        Use zlib in PATH],
	[
		if test "x$withval" = "xno" ; then
			AC_MSG_ERROR([*** zlib is required ***])
		fi
		if test -d "$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
	]
)

AC_CHECK_LIB(z, deflate, ,AC_MSG_ERROR([*** zlib missing - please install first or check config.log ***]))

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

dnl    Checks for libutil functions
AC_CHECK_HEADERS(libutil.h)
AC_SEARCH_LIBS(login, util bsd, [AC_DEFINE(HAVE_LOGIN)])
AC_CHECK_FUNCS(logout updwtmp logwtmp)

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)
		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_EGREP_CPP(FOUNDIT,
	[
		#include <glob.h>
		int main(void){glob_t g; g.gl_matchc = 1;}
	],
	[
		AC_DEFINE(GLOB_HAS_GL_MATCHC)
		AC_MSG_RESULT(yes)
	],
	[
		AC_MSG_RESULT(no)
	]
)

AC_MSG_CHECKING([whether struct dirent allocates space for d_name])
AC_TRY_RUN(
	[
#include <sys/types.h>
#include <dirent.h>
int main(void){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)
	]
)

# 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)
			LIBS="-lskey $LIBS"
			SKEY_MSG="yes"
	
			AC_MSG_CHECKING([for s/key support])
			AC_TRY_RUN(
				[
#include <stdio.h>
#include <skey.h>
int main() { char *ff = skey_keyinfo(""); ff=""; exit(0); }
				],
				[AC_MSG_RESULT(yes)],
				[
					AC_MSG_RESULT(no)
					AC_MSG_ERROR([** Incomplete or missing s/key libraries.])
				])
		fi
	]
)

# Check whether user wants TCP wrappers support
TCPW_MSG="no"
AC_ARG_WITH(tcp-wrappers,
	[  --with-tcp-wrappers[[=PATH]]      Enable tcpwrappers support
			    (optionally in PATH)],
	[
		if test "x$withval" != "xno" ; then
			saved_LIBS="$LIBS"
			saved_LDFLAGS="$LDFLAGS"
			saved_CPPFLAGS="$CPPFLAGS"
			if test -n "${withval}" -a "${withval}" != "yes"; 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} ${CPPFLAGS}"
				fi
			fi
			LIBWRAP="-lwrap"
			LIBS="$LIBWRAP $LIBS"
			AC_MSG_CHECKING(for libwrap)
			AC_TRY_LINK(
				[
#include <tcpd.h>
					int deny_severity = 0, allow_severity = 0;
				],
				[hosts_access(0);],
				[
					AC_MSG_RESULT(yes)
					AC_DEFINE(LIBWRAP)
					AC_SUBST(LIBWRAP)
					TCPW_MSG="yes"
				],
				[
					AC_MSG_ERROR([*** libwrap missing])
				]
			)
			LIBS="$saved_LIBS"
		fi
	]
)

dnl    Checks for library functions. Please keep in alphabetical order
AC_CHECK_FUNCS(\
	arc4random __b64_ntop b64_ntop __b64_pton b64_pton \
	bcopy bindresvport_sa clock fchmod fchown freeaddrinfo futimes \
	getaddrinfo getcwd getgrouplist getnameinfo getopt \
	getpeereid _getpty getrlimit getttyent glob inet_aton \
	inet_ntoa inet_ntop innetgr login_getcapbool md5_crypt memmove \
	mkdtemp mmap ngetaddrinfo nsleep ogetaddrinfo openlog_r openpty \
	pstat readpassphrase realpath recvmsg rresvport_af sendmsg \
	setdtablesize setegid setenv seteuid setgroups setlogin setpcred \
	setproctitle setregid setresgid setresuid setreuid setrlimit \
	setsid setvbuf sigaction sigvec snprintf socketpair strerror \
	strlcat strlcpy strmode strnvis strtoul sysconf tcgetpgrp \
	truncate utimes vhangup vsnprintf waitpid \
)

# IRIX has a const char return value for gai_strerror()
AC_CHECK_FUNCS(gai_strerror,[
	AC_DEFINE(HAVE_GAI_STRERROR)
	AC_TRY_COMPILE([
#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))

dnl Make sure prototypes are defined for these before using them.
AC_CHECK_DECL(strsep, [AC_CHECK_FUNCS(strsep)])
AC_CHECK_DECL(getrusage, [AC_CHECK_FUNCS(getrusage)])

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

dnl Some platorms have setresuid that isn't implemented
AC_MSG_CHECKING(if setresuid seems to work)
AC_TRY_RUN([
#include <stdlib.h>
#include <errno.h>
int main(){errno=0; setresuid(0,0,0); if (errno==ENOSYS) exit(1); else exit(0);}
	],
	[AC_MSG_RESULT(yes)],
	[AC_DEFINE(BROKEN_SETRESUID),
	 AC_MSG_RESULT(not implemented)]
)

dnl Some platorms have setresgid that isn't implemented
AC_MSG_CHECKING(if setresgid seems to work)
AC_TRY_RUN([
#include <stdlib.h>
#include <errno.h>
int main(){errno=0; setresgid(0,0,0); if (errno==ENOSYS) exit(1); else exit(0);}
	],
	[AC_MSG_RESULT(yes)],
	[AC_DEFINE(BROKEN_SETRESGID)
	 AC_MSG_RESULT(not implemented)]
)

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 pututxline )
AC_CHECK_FUNCS(setutxent utmpxname)

AC_CHECK_FUNC(daemon,
	[AC_DEFINE(HAVE_DAEMON)],
	[AC_CHECK_LIB(bsd, daemon, [LIBS="$LIBS -lbsd"; AC_DEFINE(HAVE_DAEMON)])]
)

AC_CHECK_FUNC(getpagesize,
	[AC_DEFINE(HAVE_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_TRY_RUN(
		[
#include <stdio.h>
int main(void){char b[5];snprintf(b,5,"123456789");exit(b[4]!='\0');}
		],
		[AC_MSG_RESULT(yes)],
		[
			AC_MSG_RESULT(no)
			AC_DEFINE(BROKEN_SNPRINTF)
			AC_MSG_WARN([****** Your snprintf() function is broken, complain to your vendor])
		]
	)
fi

dnl see whether mkstemp() requires XXXXXX
if test "x$ac_cv_func_mkdtemp" = "xyes" ; then
AC_MSG_CHECKING([for (overly) strict mkstemp])
AC_TRY_RUN(
	[
#include <stdlib.h>
main() { 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)
	],
	[
		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_TRY_RUN(
		[
#include <stdio.h>
#include <sys/fcntl.h>
#include <sys/types.h>
#include <sys/wait.h>

int
main()
{
	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)
		]
	)
fi

AC_FUNC_GETPGRP

# 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" ; then
				AC_MSG_ERROR([PAM headers not found])
			fi

			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)

			PAM_MSG="yes"

			AC_DEFINE(USE_PAM)
			if test $ac_cv_lib_dl_dlopen = yes; then
				LIBPAM="-lpam -ldl"
			else
				LIBPAM="-lpam"
			fi
			AC_SUBST(LIBPAM)
		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_TRY_COMPILE(
		[
#include <stdlib.h>
#include <security/pam_appl.h>
		],
		[(void)pam_strerror((pam_handle_t *)NULL, -1);],
		[AC_MSG_RESULT(no)],
		[
			AC_DEFINE(HAVE_OLD_PAM)
			AC_MSG_RESULT(yes)
			PAM_MSG="yes (old library)"
		]
	)
fi

# 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

# 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$withval" != "xno" ; then
			if test -d "$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} ${CPPFLAGS}"
			fi
		fi
	]
)
LIBS="$LIBS -lcrypto"
AC_TRY_LINK_FUNC(RAND_add, AC_DEFINE(HAVE_OPENSSL),
	[
		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_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_TRY_RUN(
	[
#include <stdio.h>
#include <string.h>
#include <openssl/opensslv.h>
#define DATA "conftest.sslincver"
int main(void) {
	FILE *fd;
	int rc;

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

	if ((rc = fprintf(fd ,"%x (%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.)
	]
)

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

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

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

	exit(0);
}
	],
	[
		ssl_library_ver=`cat conftest.ssllibver`
		AC_MSG_RESULT($ssl_library_ver)
	],
	[
		AC_MSG_RESULT(not found)
		AC_MSG_ERROR(OpenSSL library not found.)
	]
)

# Sanity check OpenSSL headers
AC_MSG_CHECKING([whether OpenSSL's headers match the library])
AC_TRY_RUN(
	[
#include <string.h>
#include <openssl/opensslv.h>
int main(void) { exit(SSLeay() == OPENSSL_VERSION_NUMBER ? 0 : 1); }
	],
	[
		AC_MSG_RESULT(yes)
	],
	[
		AC_MSG_RESULT(no)
		AC_MSG_ERROR([Your OpenSSL headers do not match your library.
Check config.log for details.
Also see contrib/findssl.sh for help identifying header/library mismatches.])
	]
)

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


### Configure cryptographic random number support

# Check wheter OpenSSL seeds itself
AC_MSG_CHECKING([whether OpenSSL's PRNG is internally seeded])
AC_TRY_RUN(
	[
#include <string.h>
#include <openssl/rand.h>
int main(void) { exit(RAND_status() == 1 ? 0 : 1); }
	],
	[
		OPENSSL_SEEDS_ITSELF=yes
		AC_MSG_RESULT(yes)
	],
	[
		AC_MSG_RESULT(no)
		# Default to use of the rand helper if OpenSSL doesn't
		# seed itself
		USE_RAND_HELPER=yes
	]
)


# Do we want to force the use of the rand helper?
AC_ARG_WITH(rand-helper,
	[  --with-rand-helper      Use subprocess to gather strong randomness ],
	[
		if test "x$withval" = "xno" ; then
			# Force use of OpenSSL's internal RNG, even if
			# the previous test showed it to be unseeded.
			if test -z "$OPENSSL_SEEDS_ITSELF" ; then
				AC_MSG_WARN([*** Forcing use of OpenSSL's non-self-seeding PRNG])
				OPENSSL_SEEDS_ITSELF=yes
				USE_RAND_HELPER=""
			fi
		else
			USE_RAND_HELPER=yes
		fi
	],
)	

# Which randomness source do we use?
if test ! -z "$OPENSSL_SEEDS_ITSELF" -a -z "$USE_RAND_HELPER" ; then
	# OpenSSL only
	AC_DEFINE(OPENSSL_PRNG_ONLY)
	RAND_MSG="OpenSSL internal ONLY"
	INSTALL_SSH_RAND_HELPER=""
elif test ! -z "$USE_RAND_HELPER" ; then
	# install rand helper
	RAND_MSG="ssh-rand-helper"
	INSTALL_SSH_RAND_HELPER="yes"
fi
AC_SUBST(INSTALL_SSH_RAND_HELPER)

### Configuration of ssh-rand-helper

# 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)
		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, "$PRNGD_SOCKET")
		fi
	],
	[
		# Check for existing socket only if we don't have a random device already
		if test "$USE_RAND_HELPER" = yes ; 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
	]
)

# Change default command timeout for hashing entropy source
entropy_timeout=200
AC_ARG_WITH(entropy-timeout,
	[  --with-entropy-timeout  Specify entropy gathering command timeout (msec)],
	[
		if test "x$withval" != "xno" ; then
			entropy_timeout=$withval
		fi
	]	
)
AC_DEFINE_UNQUOTED(ENTROPY_TIMEOUT_MSEC, $entropy_timeout)

SSH_PRIVSEP_USER=sshd
AC_ARG_WITH(privsep-user,
	[  --with-privsep-user=user Specify non-privileged user for privilege separation],
	[
		if test -n "$withval"; then
			SSH_PRIVSEP_USER=$withval
		fi
	]	
)
AC_DEFINE_UNQUOTED(SSH_PRIVSEP_USER, "$SSH_PRIVSEP_USER")
AC_SUBST(SSH_PRIVSEP_USER)

# We do this little dance with the search path to insure
# that programs that we select for use by installed programs
# (which may be run by the super-user) come from trusted
# locations before they come from the user's private area.
# This should help avoid accidentally configuring some
# random version of a program in someone's personal bin.

OPATH=$PATH
PATH=/bin:/usr/bin
test -h /bin 2> /dev/null && PATH=/usr/bin
test -d /sbin && PATH=$PATH:/sbin
test -d /usr/sbin && PATH=$PATH:/usr/sbin
PATH=$PATH:/etc:$OPATH

# These programs are used by the command hashing source to gather entropy
OSSH_PATH_ENTROPY_PROG(PROG_LS, ls)
OSSH_PATH_ENTROPY_PROG(PROG_NETSTAT, netstat)
OSSH_PATH_ENTROPY_PROG(PROG_ARP, arp)
OSSH_PATH_ENTROPY_PROG(PROG_IFCONFIG, ifconfig)
OSSH_PATH_ENTROPY_PROG(PROG_JSTAT, jstat)
OSSH_PATH_ENTROPY_PROG(PROG_PS, ps)
OSSH_PATH_ENTROPY_PROG(PROG_SAR, sar)
OSSH_PATH_ENTROPY_PROG(PROG_W, w)
OSSH_PATH_ENTROPY_PROG(PROG_WHO, who)
OSSH_PATH_ENTROPY_PROG(PROG_LAST, last)
OSSH_PATH_ENTROPY_PROG(PROG_LASTLOG, lastlog)
OSSH_PATH_ENTROPY_PROG(PROG_DF, df)
OSSH_PATH_ENTROPY_PROG(PROG_VMSTAT, vmstat)
OSSH_PATH_ENTROPY_PROG(PROG_UPTIME, uptime)
OSSH_PATH_ENTROPY_PROG(PROG_IPCS, ipcs)
OSSH_PATH_ENTROPY_PROG(PROG_TAIL, tail)
# restore PATH
PATH=$OPATH

# Where does ssh-rand-helper get its randomness from?
INSTALL_SSH_PRNG_CMDS=""
if test ! -z "$INSTALL_SSH_RAND_HELPER" ; then
	if test ! -z "$PRNGD_PORT" ; then
		RAND_HELPER_MSG="TCP localhost:$PRNGD_PORT"
	elif test ! -z "$PRNGD_SOCKET" ; then
		RAND_HELPER_MSG="Unix domain socket \"$PRNGD_SOCKET\""
	else
		RAND_HELPER_MSG="Command hashing (timeout $entropy_timeout)"
		RAND_HELPER_CMDHASH=yes
		INSTALL_SSH_PRNG_CMDS="yes"
	fi
fi
AC_SUBST(INSTALL_SSH_PRNG_CMDS)


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

# Checks for data types
AC_CHECK_SIZEOF(char, 1)
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

# More checks for data types
AC_CACHE_CHECK([for u_int type], ac_cv_have_u_int, [
	AC_TRY_COMPILE(
		[ #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)
	have_u_int=1
fi

AC_CACHE_CHECK([for intXX_t types], ac_cv_have_intxx_t, [
	AC_TRY_COMPILE(
		[ #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)
	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_TRY_COMPILE(
		[ #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_TRY_COMPILE(
		[
#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)
fi

AC_CACHE_CHECK([for u_intXX_t types], ac_cv_have_u_intxx_t, [
	AC_TRY_COMPILE(
		[ #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)
	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_TRY_COMPILE(
		[ #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_TRY_COMPILE(
		[ #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)
	have_u_int64_t=1
fi

if test -z "$have_u_int64_t" ; then
    AC_MSG_CHECKING([for u_int64_t type in sys/bitypes.h])
	AC_TRY_COMPILE(
		[ #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 "$have_u_intxx_t" ; then
	AC_CACHE_CHECK([for uintXX_t types], ac_cv_have_uintxx_t, [
		AC_TRY_COMPILE(
			[
#include <sys/types.h>
			],
			[ uint8_t a; uint16_t b; uint32_t c; a = b = c = 1; ],
			[ ac_cv_have_uintxx_t="yes" ],
			[ ac_cv_have_uintxx_t="no" ]
		)
	])
	if test "x$ac_cv_have_uintxx_t" = "xyes" ; then
		AC_DEFINE(HAVE_UINTXX_T)
	fi
fi

if test -z "$have_uintxx_t" ; then
    AC_MSG_CHECKING([for uintXX_t types in stdint.h])
	AC_TRY_COMPILE(
		[ #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 "$have_u_intxx_t" || test -z "$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_TRY_COMPILE(
		[
#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_TRY_COMPILE(
		[
#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)
fi

TYPE_SOCKLEN_T

AC_CHECK_TYPES(sig_atomic_t,,,[#include <signal.h>])

AC_CACHE_CHECK([for size_t], ac_cv_have_size_t, [
	AC_TRY_COMPILE(
		[
#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)
fi

AC_CACHE_CHECK([for ssize_t], ac_cv_have_ssize_t, [
	AC_TRY_COMPILE(
		[
#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)
fi

AC_CACHE_CHECK([for clock_t], ac_cv_have_clock_t, [
	AC_TRY_COMPILE(
		[
#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)
fi

AC_CACHE_CHECK([for sa_family_t], ac_cv_have_sa_family_t, [
	AC_TRY_COMPILE(
		[
#include <sys/types.h>
#include <sys/socket.h>
		],
		[ sa_family_t foo; foo = 1235; ],
		[ ac_cv_have_sa_family_t="yes" ],
		[ AC_TRY_COMPILE(
		  [
#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)
fi

AC_CACHE_CHECK([for pid_t], ac_cv_have_pid_t, [
	AC_TRY_COMPILE(
		[
#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)
fi

AC_CACHE_CHECK([for mode_t], ac_cv_have_mode_t, [
	AC_TRY_COMPILE(
		[
#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)
fi


AC_CACHE_CHECK([for struct sockaddr_storage], ac_cv_have_struct_sockaddr_storage, [
	AC_TRY_COMPILE(
		[
#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)
fi

AC_CACHE_CHECK([for struct sockaddr_in6], ac_cv_have_struct_sockaddr_in6, [
	AC_TRY_COMPILE(
		[
#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)
fi

AC_CACHE_CHECK([for struct in6_addr], ac_cv_have_struct_in6_addr, [
	AC_TRY_COMPILE(
		[
#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)
fi

AC_CACHE_CHECK([for struct addrinfo], ac_cv_have_struct_addrinfo, [
	AC_TRY_COMPILE(
		[
#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)
fi

AC_CACHE_CHECK([for struct timeval], ac_cv_have_struct_timeval, [
	AC_TRY_COMPILE(
		[ #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)
	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$ac_cv_have_int64_t" = "xno" -a \
	"x$ac_cv_sizeof_long_int" != "x8" -a \
	"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_TRY_RUN(
		[
#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) ]
	)
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_CACHE_CHECK([for ss_family field in struct sockaddr_storage],
		ac_cv_have_ss_family_in_struct_ss, [
	AC_TRY_COMPILE(
		[
#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)
fi

AC_CACHE_CHECK([for __ss_family field in struct sockaddr_storage],
		ac_cv_have___ss_family_in_struct_ss, [
	AC_TRY_COMPILE(
		[
#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)
fi

AC_CACHE_CHECK([for pw_class field in struct passwd],
		ac_cv_have_pw_class_in_struct_passwd, [
	AC_TRY_COMPILE(
		[
#include <pwd.h>
		],
		[ struct passwd p; p.pw_class = 0; ],
		[ ac_cv_have_pw_class_in_struct_passwd="yes" ],
		[ ac_cv_have_pw_class_in_struct_passwd="no" ]
	)
])
if test "x$ac_cv_have_pw_class_in_struct_passwd" = "xyes" ; then
	AC_DEFINE(HAVE_PW_CLASS_IN_PASSWD)
fi

AC_CACHE_CHECK([for pw_expire field in struct passwd],
		ac_cv_have_pw_expire_in_struct_passwd, [
	AC_TRY_COMPILE(
		[
#include <pwd.h>
		],
		[ struct passwd p; p.pw_expire = 0; ],
		[ ac_cv_have_pw_expire_in_struct_passwd="yes" ],
		[ ac_cv_have_pw_expire_in_struct_passwd="no" ]
	)
])
if test "x$ac_cv_have_pw_expire_in_struct_passwd" = "xyes" ; then
	AC_DEFINE(HAVE_PW_EXPIRE_IN_PASSWD)
fi

AC_CACHE_CHECK([for pw_change field in struct passwd],
		ac_cv_have_pw_change_in_struct_passwd, [
	AC_TRY_COMPILE(
		[
#include <pwd.h>
		],
		[ struct passwd p; p.pw_change = 0; ],
		[ ac_cv_have_pw_change_in_struct_passwd="yes" ],
		[ ac_cv_have_pw_change_in_struct_passwd="no" ]
	)
])
if test "x$ac_cv_have_pw_change_in_struct_passwd" = "xyes" ; then
	AC_DEFINE(HAVE_PW_CHANGE_IN_PASSWD)
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_TRY_RUN(
		[
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
int main() {
#ifdef msg_accrights
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)
fi

AC_CACHE_CHECK([for msg_control field in struct msghdr],
		ac_cv_have_control_in_msghdr, [
	AC_TRY_RUN(
		[
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
int main() {
#ifdef msg_control
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)
fi

AC_CACHE_CHECK([if libc defines __progname], ac_cv_libc_defines___progname, [
	AC_TRY_LINK([],
		[ 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)
fi

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

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

AC_CACHE_CHECK([whether getopt has optreset support],
		ac_cv_have_getopt_optreset, [
	AC_TRY_LINK(
		[
#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)
fi

AC_CACHE_CHECK([if libc defines sys_errlist], ac_cv_libc_defines_sys_errlist, [
	AC_TRY_LINK([],
		[ 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)
fi


AC_CACHE_CHECK([if libc defines sys_nerr], ac_cv_libc_defines_sys_nerr, [
	AC_TRY_LINK([],
		[ 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)
fi

SCARD_MSG="no"
# Check whether user wants sectok support
AC_ARG_WITH(sectok,
	[  --with-sectok           Enable smartcard support using libsectok],
	[
		if test "x$withval" != "xno" ; then
			if test "x$withval" != "xyes" ; then
				CPPFLAGS="$CPPFLAGS -I${withval}"
				LDFLAGS="$LDFLAGS -L${withval}"
				if test ! -z "$need_dash_r" ; then
					LDFLAGS="$LDFLAGS -R${withval}"
				fi
				if test ! -z "$blibpath" ; then
					blibpath="$blibpath:${withval}"
				fi
			fi
			AC_CHECK_HEADERS(sectok.h)
			if test "$ac_cv_header_sectok_h" != yes; then
				AC_MSG_ERROR(Can't find sectok.h)
			fi
			AC_CHECK_LIB(sectok, sectok_open)
			if test "$ac_cv_lib_sectok_sectok_open" != yes; then
				AC_MSG_ERROR(Can't find libsectok)
			fi
			AC_DEFINE(SMARTCARD)
			AC_DEFINE(USE_SECTOK)
			SCARD_MSG="yes, using sectok"
		fi
	]
)

# Check whether user wants OpenSC support
AC_ARG_WITH(opensc,
	AC_HELP_STRING([--with-opensc=PFX],
		       [Enable smartcard support using OpenSC]),
	opensc_config_prefix="$withval", opensc_config_prefix="")
if test x$opensc_config_prefix != x ; then
  OPENSC_CONFIG=$opensc_config_prefix/bin/opensc-config
  AC_PATH_PROG(OPENSC_CONFIG, opensc-config, no)
  if test "$OPENSC_CONFIG" != "no"; then
    LIBOPENSC_CFLAGS=`$OPENSC_CONFIG --cflags`
    LIBOPENSC_LIBS=`$OPENSC_CONFIG --libs`
    CPPFLAGS="$CPPFLAGS $LIBOPENSC_CFLAGS"
    LDFLAGS="$LDFLAGS $LIBOPENSC_LIBS"
    AC_DEFINE(SMARTCARD)
    AC_DEFINE(USE_OPENSC)
    SCARD_MSG="yes, using OpenSC"
  fi
fi

# Check libraries needed by DNS fingerprint support
AC_SEARCH_LIBS(getrrsetbyname, resolv,
	[AC_DEFINE(HAVE_GETRRSETBYNAME)],
	[
		# Needed by our getrrsetbyname()
		AC_SEARCH_LIBS(res_query, resolv)
		AC_SEARCH_LIBS(dn_expand, resolv)
		AC_CHECK_FUNCS(_getshort _getlong)
		AC_CHECK_MEMBER(HEADER.ad,
			[AC_DEFINE(HAVE_HEADER_AD)],,
			[#include <arpa/nameser.h>])
	])

# 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=${withval}
			fi
			CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include"
			LDFLAGS="$LDFLAGS -L${KRB5ROOT}/lib"
			AC_DEFINE(KRB5)
			KRB5_MSG="yes"
			AC_MSG_CHECKING(whether we are using Heimdal)
			AC_TRY_COMPILE([ #include <krb5.h> ],
				       [ char *tmp = heimdal_version; ],
				       [ AC_MSG_RESULT(yes)
					 AC_DEFINE(HEIMDAL)
					 K5LIBS="-lkrb5 -ldes -lcom_err -lasn1 -lroken"
				       ],
				       [ AC_MSG_RESULT(no)
					 K5LIBS="-lkrb5 -lk5crypto -lcom_err"
				       ]
			)
			if test ! -z "$need_dash_r" ; then
				LDFLAGS="$LDFLAGS -R${KRB5ROOT}/lib"
			fi
			if test ! -z "$blibpath" ; then
				blibpath="$blibpath:${KRB5ROOT}/lib"
			fi
			AC_SEARCH_LIBS(dn_expand, resolv)

			AC_CHECK_LIB(gssapi,gss_init_sec_context,
				[ AC_DEFINE(GSSAPI)
				  K5LIBS="-lgssapi $K5LIBS" ],
				[ AC_CHECK_LIB(gssapi_krb5,gss_init_sec_context,
					[ AC_DEFINE(GSSAPI)
					  K5LIBS="-lgssapi_krb5 $K5LIBS" ],
					AC_MSG_WARN([Cannot find any suitable gss-api library - build may fail]),
					$K5LIBS)
				],
				$K5LIBS)
			
			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" ])

			KRB5=yes
		fi
	]
)
LIBS="$LIBS $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 "x$withval" != "$no" ; then
			PRIVSEP_PATH=$withval
		fi
	]
)
AC_SUBST(PRIVSEP_PATH)

AC_ARG_WITH(xauth,
	[  --with-xauth=PATH       Specify path to xauth program ],
	[
		if test "x$withval" != "xno" ; then
			xauth_path=$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")
	XAUTH_PATH=$xauth_path
	AC_SUBST(XAUTH_PATH)
fi

# Check for mail directory (last resort if we cannot get it from headers)
if test ! -z "$MAIL" ; then
	maildir=`dirname $MAIL`
	AC_DEFINE_UNQUOTED(MAIL_DIRECTORY, "$maildir")
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)
				have_dev_ptmx=1
			]
		)
	fi
fi
AC_CHECK_FILE("/dev/ptc",
	[
		AC_DEFINE_UNQUOTED(HAVE_DEV_PTS_AND_PTC)
		have_dev_ptc=1
	]
)

# 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)
			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_TRY_COMPILE(
	[
#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)
	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)
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]],,
[
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)
fi
])

dnl BSD systems use /etc/login.conf so --with-default-path= has no effect
if test $ac_cv_func_login_getcapbool = "yes" -a \
	$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_TRY_RUN(
			[
/* 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"

main()
{
	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=`eval echo ${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
		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")
	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 "x$withval" != "xno" ; then
			AC_DEFINE_UNQUOTED(SUPERUSER_PATH, "$withval")
			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$withval" != "xno" ; then
			AC_MSG_RESULT(yes)
			AC_DEFINE(IPV4_IN_IPV6)
			IPV4_IN6_HACK_MSG="yes"
		else
			AC_MSG_RESULT(no)
		fi
	],[
		if test "x$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)
			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 "x$withval" != "xno" ; then	
			piddir=$withval
			if test ! -d $piddir ; then	
			AC_MSG_WARN([** no $piddir directory on this system **])
			fi
		fi
	]
)

AC_DEFINE_UNQUOTED(_PATH_SSH_PIDDIR, "$piddir")
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$enableval" = "xno" ; then
			AC_DEFINE(DISABLE_UTMPX)
		fi
	]
)
AC_ARG_ENABLE(wtmp,
	[  --disable-wtmp          disable use of wtmp even if detected [no]],
	[
		if test "x$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$enableval" = "xno" ; then
			AC_DEFINE(DISABLE_WTMPX)
		fi
	]
)
AC_ARG_ENABLE(libutil,
	[  --disable-libutil       disable use of libutil (login() etc.) [no]],
	[
		if test "x$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$enableval" = "xno" ; then
			AC_DEFINE(DISABLE_PUTUTLINE)
		fi
	]
)
AC_ARG_ENABLE(pututxline,
	[  --disable-pututxline    disable use of pututxline() etc. ([uw]tmpx) [no]],
	[
		if test "x$enableval" = "xno" ; then
			AC_DEFINE(DISABLE_PUTUTXLINE)
		fi
	]
)
AC_ARG_WITH(lastlog,
  [  --with-lastlog=FILE|DIR specify lastlog location [common locations]],
	[
		if test "x$withval" = "xno" ; then	
			AC_DEFINE(DISABLE_LASTLOG)
		else
			conf_lastlog_location=$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_TRY_COMPILE([
#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_TRY_COMPILE([
#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")
fi	

dnl utmp detection
AC_MSG_CHECKING([if your system defines UTMP_FILE])
AC_TRY_COMPILE([
#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")
fi	

dnl wtmp detection
AC_MSG_CHECKING([if your system defines WTMP_FILE])
AC_TRY_COMPILE([
#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")
fi	


dnl utmpx detection - I don't know any system so perverse as to require
dnl  utmpx, but not define UTMPX_FILE (ditto wtmpx.) No doubt it's out
dnl  there, though.
AC_MSG_CHECKING([if your system defines UTMPX_FILE])
AC_TRY_COMPILE([
#include <sys/types.h>
#include <utmp.h>
#ifdef HAVE_UTMPX_H
#include <utmpx.h>
#endif
#ifdef HAVE_PATHS_H
#  include <paths.h>
#endif
	],
	[ char *utmpx = UTMPX_FILE; ],
	[ AC_MSG_RESULT(yes) ],
	[ AC_MSG_RESULT(no)
	  system_utmpx_path=no ]
)
if test -z "$conf_utmpx_location"; then
	if test x"$system_utmpx_path" = x"no" ; then
		AC_DEFINE(DISABLE_UTMPX)
	fi
else
	AC_DEFINE_UNQUOTED(CONF_UTMPX_FILE, "$conf_utmpx_location")
fi	

dnl wtmpx detection
AC_MSG_CHECKING([if your system defines WTMPX_FILE])
AC_TRY_COMPILE([
#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")
fi	


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

dnl remove pam and dl because they are in $LIBPAM
if test "$PAM_MSG" = yes ; then
	LIBS=`echo $LIBS | sed 's/-lpam //'`
fi
if test "$ac_cv_lib_pam_pam_set_item" = yes ; then
	LIBS=`echo $LIBS | sed 's/-ldl //'`
fi

AC_EXEEXT
AC_CONFIG_FILES([Makefile openbsd-compat/Makefile scard/Makefile ssh_prng_cmds])
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 "                       DNS support: $DNS_MSG"
echo "                       PAM support: $PAM_MSG"
echo "                 KerberosV support: $KRB5_MSG"
echo "                 Smartcard support: $SCARD_MSG"
echo "                     S/KEY support: $SKEY_MSG"
echo "              TCP Wrappers support: $TCPW_MSG"
echo "              MD5 password support: $MD5_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: $RAND_MSG"
if test ! -z "$USE_RAND_HELPER" ; then
echo "     ssh-rand-helper collects from: $RAND_HELPER_MSG"
fi

echo ""

echo "              Host: ${host}"
echo "          Compiler: ${CC}"
echo "    Compiler flags: ${CFLAGS}"
echo "Preprocessor flags: ${CPPFLAGS}"
echo "      Linker flags: ${LDFLAGS}"
echo "         Libraries: ${LIBWRAP} ${LIBPAM} ${LIBS}"

echo ""

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 "$RAND_HELPER_CMDHASH" ; then
	echo "WARNING: you are using the builtin random number collection "
	echo "service. Please read WARNING.RNG and request that your OS "
	echo "vendor includes kernel-based random number collection in "
	echo "future versions of your OS."
	echo ""
fi