emacs / configure.in

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
dnl  Autoconf script for GNU Emacs
dnl To rebuild the `configure' script from this, execute the command
dnl 	autoconf
dnl in the directory containing this script.
dnl If you changed any AC_DEFINES, also run autoheader.
dnl
dnl Copyright (C) 1994-1996, 1999-2011  Free Software Foundation, Inc.
dnl
dnl  This file is part of GNU Emacs.
dnl
dnl  GNU Emacs is free software: you can redistribute it and/or modify
dnl  it under the terms of the GNU General Public License as published by
dnl  the Free Software Foundation, either version 3 of the License, or
dnl  (at your option) any later version.
dnl
dnl  GNU Emacs is distributed in the hope that it will be useful,
dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl  GNU General Public License for more details.
dnl
dnl  You should have received a copy of the GNU General Public License
dnl  along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

AC_PREREQ(2.65)
AC_INIT(emacs, 24.0.50)
AC_CONFIG_HEADER(src/config.h:src/config.in)
AC_CONFIG_SRCDIR(src/lisp.h)
AM_INIT_AUTOMAKE

dnl Support for --program-prefix, --program-suffix and
dnl --program-transform-name options
AC_ARG_PROGRAM

dnl It is important that variables on the RHS not be expanded here,
dnl hence the single quotes.  This is per the GNU coding standards, see
dnl (autoconf) Installation Directory Variables
dnl See also epaths.h below.
lispdir='${datadir}/emacs/${version}/lisp'
locallisppath='${datadir}/emacs/${version}/site-lisp:'\
'${datadir}/emacs/site-lisp'
lisppath='${locallisppath}:${lispdir}:${datadir}/emacs/${version}/leim'
etcdir='${datadir}/emacs/${version}/etc'
archlibdir='${libexecdir}/emacs/${version}/${configuration}'
docdir='${datadir}/emacs/${version}/etc'
gamedir='${localstatedir}/games/emacs'

dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
dnl Create a new --with option that defaults to being disabled.
dnl NAME is the base name of the option.  The shell variable with_NAME
dnl   will be set to either the user's value (if the option is
dnl   specified; 'yes' for a plain --with-NAME) or to 'no' (if the
dnl   option is not specified).  Note that the shell variable name is
dnl   constructed as autoconf does, by replacing non-alphanumeric
dnl   characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
  AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
    m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
])dnl

dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
dnl Create a new --with option that defaults to being enabled.  NAME
dnl   is the base name of the option.  The shell variable with_NAME
dnl   will be set either to 'no' (for a plain --without-NAME) or to
dnl   'yes' (if the option is not specified).  Note that the shell
dnl   variable name is constructed as autoconf does, by replacing
dnl   non-alphanumeric characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_ON], [dnl
  AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
   m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=yes])dnl
])dnl

OPTION_DEFAULT_ON([pop],[don't support POP mail retrieval with movemail])
if test "$with_pop" = yes; then
   AC_DEFINE(MAIL_USE_POP)
fi
AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl

OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
if test "$with_kerberos" != no; then
   AC_DEFINE(KERBEROS)
fi
AH_TEMPLATE(KERBEROS,
	    [Define to support Kerberos-authenticated POP mail retrieval.])dnl

OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
if test "${with_kerberos5}" != no; then
  if test "${with_kerberos}" = no; then
    with_kerberos=yes
    AC_DEFINE(KERBEROS)
  fi
  AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
fi

OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
dnl FIXME hesiod support may not be present, so it seems like an error
dnl to define, or at least use, this unconditionally.
if test "$with_hesiod" != no; then
  AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
fi

OPTION_DEFAULT_OFF([mmdf],[support MMDF mailboxes])
if test "$with_mmdf" != no; then
   AC_DEFINE(MAIL_USE_MMDF, 1, [Define to support MMDF mailboxes in movemail.])
fi

OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
if test "$with_mail_unlink" != no; then
   AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
fi

AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
    [string giving default POP mail host])],
    AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))

OPTION_DEFAULT_ON([sound],[don't compile with sound support])

OPTION_DEFAULT_ON([sync-input],[process async input synchronously])
if test "$with_sync_input" = yes; then
   AC_DEFINE(SYNC_INPUT, 1, [Process async input synchronously.])
fi

dnl FIXME currently it is not the last.
dnl This should be the last --with option, because --with-x is
dnl added later on when we find the path of X, and it's best to
dnl keep them together visually.
AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
 [use an X toolkit (KIT one of: yes or gtk, gtk3, lucid or athena, motif, no)])],
[	  case "${withval}" in
	    y | ye | yes )	val=gtk ;;
	    n | no )		val=no  ;;
	    l | lu | luc | luci | lucid )	val=lucid ;;
	    a | at | ath | athe | athen | athena )	val=athena ;;
	    m | mo | mot | moti | motif )	val=motif ;;
	    g | gt | gtk  )	val=gtk ;;
	    gtk3  )	val=gtk3 ;;
	    * )
AC_MSG_ERROR([`--with-x-toolkit=$withval' is invalid;
this option's value should be `yes', `no', `lucid', `athena', `motif', `gtk' or
`gtk3'.  `yes' and `gtk' are synonyms. `athena' and `lucid' are synonyms.])
	    ;;
	  esac
	  with_x_toolkit=$val
])

OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit)])
if test "$with_wide_int" = yes; then
  AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
fi

dnl _ON results in a '--without' option in the --help output, so
dnl the help text should refer to "don't compile", etc.
OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])

OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])

OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
OPTION_DEFAULT_OFF([ns],[use NeXTstep (Cocoa or GNUstep) windowing system])

OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
OPTION_DEFAULT_ON([gconf],[don't compile with GConf support])
OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])

## For the times when you want to build Emacs but don't have
## a suitable makeinfo, and can live without the manuals.
dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])

## This is an option because I do not know if all info/man support
## compressed files, nor how to test if they do so.
OPTION_DEFAULT_ON([compress-info],[don't compress the installed Info pages])
if test $with_compress_info = yes; then
   GZIP_INFO=yes
else
   GZIP_INFO=
fi
AC_SUBST(GZIP_INFO)

AC_ARG_WITH([pkg-config-prog],dnl
[AS_HELP_STRING([--with-pkg-config-prog=PATH],
                  [path to pkg-config for finding GTK and librsvg])])
if test "X${with_pkg_config_prog}" != X; then
   if test "${with_pkg_config_prog}" != yes; then
      PKG_CONFIG="${with_pkg_config_prog}"
   fi
fi

CRT_DIR=
AC_ARG_WITH([crt-dir],dnl
[AS_HELP_STRING([--with-crt-dir=DIR],[directory containing crtn.o etc.
The default is /usr/lib, or /usr/lib64 on some platforms.])])
CRT_DIR="${with_crt_dir}"

AC_ARG_WITH(gameuser,dnl
[AS_HELP_STRING([--with-gameuser=USER],[user for shared game score files])])
test "X${with_gameuser}" != X && test "${with_gameuser}" != yes \
  && gameuser="${with_gameuser}"
test "X$gameuser" = X && gameuser=games

AC_ARG_WITH([gnustep-conf],dnl
[AS_HELP_STRING([--with-gnustep-conf=PATH],[path to GNUstep.conf; default $GNUSTEP_CONFIG_FILE, or /etc/GNUstep/GNUstep.conf])])
test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
  GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
test "X$GNUSTEP_CONFIG_FILE" = "X" && \
     GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf

AC_ARG_ENABLE(ns-self-contained,
[AS_HELP_STRING([--disable-ns-self-contained],
                [disable self contained build under NeXTstep])],
   EN_NS_SELF_CONTAINED=$enableval,
   EN_NS_SELF_CONTAINED=yes)

AC_ARG_ENABLE(asserts,
[AS_HELP_STRING([--enable-asserts], [compile code with asserts enabled])],
      USE_XASSERTS=$enableval,
      USE_XASSERTS=no)

AC_ARG_ENABLE(maintainer-mode,
[AS_HELP_STRING([--enable-maintainer-mode],
                [enable make rules and dependencies not useful (and sometimes
		 confusing) to the casual installer])],
      USE_MAINTAINER_MODE=$enableval,
      USE_MAINTAINER_MODE=yes)
if test $USE_MAINTAINER_MODE = yes; then
  MAINT=
else
  MAINT=#
fi
AC_SUBST(MAINT)

AC_ARG_ENABLE(locallisppath,
[AS_HELP_STRING([--enable-locallisppath=PATH],
                [directories Emacs should search for lisp files specific
		 to this site])],
if test "${enableval}" = "no"; then
  locallisppath=
elif test "${enableval}" != "yes"; then
  locallisppath=${enableval}
fi)

AC_ARG_ENABLE(checking,
[AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
		[enable expensive run-time checks.  With LIST,
		 enable only specific categories of checks.
		 Categories are: all,yes,no.
		 Flags are: stringbytes, stringoverrun, stringfreelist,
		 xmallocoverrun, conslist])],
[ac_checking_flags="${enableval}"],[])
IFS="${IFS= 	}"; ac_save_IFS="$IFS"; IFS="$IFS,"
for check in $ac_checking_flags
do
	case $check in
	# these set all the flags to specific states
	yes)		ac_enable_checking=1 ;;
	no)		ac_enable_checking= ;
			ac_gc_check_stringbytes= ;
	                ac_gc_check_string_overrun= ;
	                ac_gc_check_string_free_list= ;
	                ac_xmalloc_overrun= ;
	                ac_gc_check_cons_list= ;;
	all)		ac_enable_checking=1 ;
			ac_gc_check_stringbytes=1 ;
	                ac_gc_check_string_overrun=1 ;
	                ac_gc_check_string_free_list=1 ;
	                ac_xmalloc_overrun=1 ;
	                ac_gc_check_cons_list=1 ;;
	# these enable particular checks
	stringbytes) 	ac_gc_check_stringbytes=1 ;;
	stringoverrun) 	ac_gc_check_string_overrun=1 ;;
	stringfreelist) ac_gc_check_string_free_list=1 ;;
	xmallocoverrun)	ac_xmalloc_overrun=1 ;;
	conslist)	ac_gc_check_cons_list=1 ;;
	*)	AC_MSG_ERROR(unknown check category $check) ;;
	esac
done
IFS="$ac_save_IFS"

if test x$ac_enable_checking != x ; then
  AC_DEFINE(ENABLE_CHECKING, 1,
[Enable expensive run-time checking of data types?])
fi
if test x$ac_gc_check_stringbytes != x ; then
  AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
[Define this temporarily to hunt a bug.  If defined, the size of
   strings is redundantly recorded in sdata structures so that it can
   be compared to the sizes recorded in Lisp strings.])
fi
if test x$ac_gc_check_string_overrun != x ; then
  AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
[Define this to check for short string overrun.])
fi
if test x$ac_gc_check_string_free_list != x ; then
  AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
[Define this to check the string free list.])
fi
if test x$ac_xmalloc_overrun != x ; then
  AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
[Define this to check for malloc buffer overrun.])
fi
if test x$ac_gc_check_cons_list != x ; then
  AC_DEFINE(GC_CHECK_CONS_LIST, 1,
[Define this to check for errors in cons list.])
fi

AC_ARG_ENABLE(use-lisp-union-type,
[AS_HELP_STRING([--enable-use-lisp-union-type],
                [use a union for the Lisp_Object data type.
		This is only useful for development for catching certain types of bugs.])],
if test "${enableval}" != "no"; then
   AC_DEFINE(USE_LISP_UNION_TYPE, 1,
   [Define this to use a lisp union for the Lisp_Object data type.])
fi)


AC_ARG_ENABLE(profiling,
[AS_HELP_STRING([--enable-profiling],
		[build emacs with profiling support.
		 This might not work on all platforms])],
[ac_enable_profiling="${enableval}"],[])
if test x$ac_enable_profiling != x ; then
   PROFILING_CFLAGS="-DPROFILING=1 -pg"
else
   PROFILING_CFLAGS=
fi
AC_SUBST(PROFILING_CFLAGS)

AC_ARG_ENABLE(autodepend,
[AS_HELP_STRING([--enable-autodepend],
		[automatically generate dependencies to .h-files.
 		 Requires GNU Make and Gcc. Enabled if GNU Make and Gcc is
 		 found])],
[ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])

#### Make srcdir absolute, if it isn't already.  It's important to
#### avoid running the path through pwd unnecessarily, since pwd can
#### give you automounter prefixes, which can go away.  We do all this
#### so Emacs can find its files when run uninstalled.
## Make sure CDPATH doesn't affect cd (in case PWD is relative).
unset CDPATH
case "${srcdir}" in
  /* ) ;;
  . )
    ## We may be able to use the $PWD environment variable to make this
    ## absolute.  But sometimes PWD is inaccurate.
    ## Note: we used to use ${PWD} at the end instead of `pwd`,
    ## but that tested only for a well-formed and valid PWD,
    ## it did not object when PWD was well-formed and valid but just wrong.
    if test ".${PWD}" != "." && test ".`(cd ${PWD} ; sh -c pwd)`" = ".`pwd`"  ;
    then
      srcdir="$PWD"
    else
      srcdir="`(cd ${srcdir}; pwd)`"
    fi
  ;;
  *  ) srcdir="`(cd ${srcdir}; pwd)`" ;;
esac

#### Given the configuration name, set machfile and opsysfile to the
#### names of the m/*.h and s/*.h files we should use.

### Canonicalize the configuration name.

AC_CANONICAL_HOST
canonical=$host
configuration=${host_alias-${build_alias-$host}}

dnl This used to use changequote, but, apart from `changequote is evil'
dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
dnl the great gob of text.  Thus it's not processed for possible expansion.
dnl Just make sure the brackets remain balanced.
dnl
dnl Since Emacs can't find matching pairs of quotes, boundaries are
dnl indicated by comments.
dnl quotation begins
[

### If you add support for a new configuration, add code to this
### switch statement to recognize your configuration name and select
### the appropriate operating system and machine description files.

### You would hope that you could choose an m/*.h file pretty much
### based on the machine portion of the configuration name, and an s/*.h
### file based on the operating system portion.  However, it turns out
### that each m/*.h file is pretty manufacturer-specific - for
### example mips.h is MIPS
### So we basically have to have a special case for each
### configuration name.
###
### As far as handling version numbers on operating systems is
### concerned, make sure things will fail in a fixable way.  If
### /etc/MACHINES doesn't say anything about version numbers, be
### prepared to handle anything reasonably.  If version numbers
### matter, be sure /etc/MACHINES says something about it.

machine='' opsys='' unported=no
case "${canonical}" in

  ## GNU/Linux ports
  *-*-linux-gnu*)
    opsys=gnu-linux
    case ${canonical} in
      alpha*)	machine=alpha ;;
      s390-*)	machine=ibms390 ;;
      s390x-*)	machine=ibms390x ;;
      powerpc*)	machine=macppc ;;
      sparc*)	machine=sparc ;;
      ia64*)	machine=ia64 ;;
      m68k*)	machine=m68k ;;
      x86_64*)	machine=amdx86-64 ;;
    esac
  ;;

  ## FreeBSD ports
  *-*-freebsd* )
    opsys=freebsd
    case "${canonical}" in
      alpha*)           machine=alpha ;;
      amd64-*|x86_64-*) machine=amdx86-64 ;;
      ia64-*)           machine=ia64 ;;
      i[3456]86-*)      machine=intel386 ;;
      powerpc-*)        machine=macppc ;;
      sparc-*)          machine=sparc ;;
      sparc64-*)        machine=sparc ;;
    esac
  ;;

  ## FreeBSD kernel + glibc based userland
  *-*-kfreebsd*gnu* )
    opsys=gnu-kfreebsd
    case "${canonical}" in
      alpha*)           machine=alpha ;;
      amd64-*|x86_64-*) machine=amdx86-64 ;;
      ia64-*)           machine=ia64 ;;
      i[3456]86-*)      machine=intel386 ;;
      powerpc-*)        machine=macppc ;;
      sparc-*)          machine=sparc ;;
      sparc64-*)        machine=sparc ;;
    esac
  ;;

  ## NetBSD ports
  *-*-netbsd* )
    opsys=netbsd
    case "${canonical}" in
      alpha*)      machine=alpha ;;
      x86_64-*)    machine=amdx86-64 ;;
      i[3456]86-*) machine=intel386 ;;
      m68k-*)      machine=m68k ;;
      powerpc-*)   machine=macppc ;;
      sparc*-)     machine=sparc ;;
      vax-*)       machine=vax ;;
    esac
  ;;

  ## OpenBSD ports
  *-*-openbsd* )
    opsys=openbsd
    case "${canonical}" in
      alpha*)    machine=alpha ;;
      x86_64-*)  machine=amdx86-64 ;;
      i386-*)    machine=intel386 ;;
      powerpc-*) machine=macppc ;;
      sparc*)    machine=sparc ;;
      vax-*)     machine=vax ;;
    esac
  ;;

  ## Apple Darwin / Mac OS X
  *-apple-darwin* )
    case "${canonical}" in
      i[3456]86-* )  machine=intel386 ;;
      powerpc-* )    machine=macppc ;;
      x86_64-* )     machine=amdx86-64 ;;
      * )            unported=yes ;;
    esac
    opsys=darwin
    # Define CPP as follows to make autoconf work correctly.
    CPP="${CC-cc} -E -no-cpp-precomp"
    # Use fink packages if available.
    if test -d /sw/include && test -d /sw/lib; then
      GCC_TEST_OPTIONS="-I/sw/include -L/sw/lib"
      CPP="${CPP} ${GCC_TEST_OPTIONS}"
      NON_GCC_TEST_OPTIONS=${GCC_TEST_OPTIONS}
    fi
  ;;

  ## HP 9000 series 700 and 800, running HP/UX
  hppa*-hp-hpux10.2* )
    opsys=hpux10-20
  ;;
  hppa*-hp-hpux1[1-9]* )
    opsys=hpux11
    CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
  ;;

  ia64*-hp-hpux1[1-9]* )
    machine=hp800 opsys=hpux11
    ## FIXME.  Peter O'Gorman reports that dumping using unexelf.o doesn't
    ## work either: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=6811
    CANNOT_DUMP=yes
  ;;

  hppa*-*-linux-gnu* )
    machine=hp800 opsys=gnu-linux
  ;;

  ## IBM machines
  rs6000-ibm-aix4.[23]* )
    machine=ibmrs6000 opsys=aix4-2
  ;;
  powerpc-ibm-aix4.[23]*  )
    machine=ibmrs6000 opsys=aix4-2
  ;;
  rs6000-ibm-aix[56]* )
    machine=ibmrs6000 opsys=aix4-2
  ;;
  powerpc-ibm-aix[56]*  )
    machine=ibmrs6000 opsys=aix4-2
  ;;

  ## Silicon Graphics machines
  ## Iris 4D
  mips-sgi-irix6.5 )
    machine=iris4d opsys=irix6-5
    # Without defining _LANGUAGE_C, things get masked out in the headers
    # so that, for instance, grepping for `free' in stdlib.h fails and
    # AC_HEADER_STD_C fails.   (MIPSPro 7.2.1.2m compilers, Irix 6.5.3m).
    NON_GNU_CPP="/lib/cpp -D_LANGUAGE_C"
    NON_GCC_TEST_OPTIONS="-D_LANGUAGE_C"
  ;;

  ## Suns
  *-sun-solaris* \
    | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
    | x86_64-*-solaris2*    | x86_64-*-sunos5*)
    case "${canonical}" in
      i[3456]86-*-* )     machine=intel386 ;;
      amd64-*-*|x86_64-*-*)	machine=amdx86-64 ;;
      sparc* )		machine=sparc ;;
      * )		unported=yes ;;
    esac
    case "${canonical}" in
      *-sunos5.6* | *-solaris2.6* )
		opsys=sol2-6
		NON_GNU_CPP=/usr/ccs/lib/cpp
		RANLIB="ar -ts"
		;;
      *-sunos5.[7-9]* | *-solaris2.[7-9]* )
		opsys=sol2-6
		emacs_check_sunpro_c=yes
		NON_GNU_CPP=/usr/ccs/lib/cpp
		;;
      *-sunos5* | *-solaris* )
		opsys=sol2-10
		emacs_check_sunpro_c=yes
		NON_GNU_CPP=/usr/ccs/lib/cpp
		;;
    esac
    ## Watch out for a compiler that we know will not work.
    case "${canonical}" in
     *-solaris* | *-sunos5* )
		if [ "x$CC" = x/usr/ucb/cc ]; then
		  ## /usr/ucb/cc doesn't work;
		  ## we should find some other compiler that does work.
		  unset CC
		fi
		;;
      *) ;;
    esac
  ;;

  ## Intel 386 machines where we don't care about the manufacturer.
  i[3456]86-*-* )
    machine=intel386
    case "${canonical}" in
      *-cygwin )                opsys=cygwin ;;
      *-darwin* )               opsys=darwin
                                CPP="${CC-cc} -E -no-cpp-precomp"
 				;;
      *-sysv4.2uw* )	  	opsys=unixware; NON_GNU_CPP=/lib/cpp ;;
      *-sysv5uw* )	  	opsys=unixware; NON_GNU_CPP=/lib/cpp ;;
      *-sysv5OpenUNIX* )  	opsys=unixware; NON_GNU_CPP=/lib/cpp ;;
      ## Otherwise, we'll fall through to the generic opsys code at the bottom.
    esac
  ;;

  * )
    unported=yes
  ;;
esac

### If the code above didn't choose an operating system, just choose
### an operating system based on the configuration name.  You really
### only want to use this when you have no idea what the right
### operating system is; if you know what operating systems a machine
### runs, it's cleaner to make it explicit in the case statement
### above.
if test x"${opsys}" = x; then
  case "${canonical}" in
    *-gnu* )				opsys=gnu ;;
    * )
      unported=yes
    ;;
  esac
fi

]
dnl quotation ends

if test $unported = yes; then
  AC_MSG_ERROR([Emacs hasn't been ported to `${canonical}' systems.
Check `etc/MACHINES' for recognized configuration names.])
fi

if test -n "$machine"; then
  machfile="m/${machine}.h"
else
  machfile=
fi
opsysfile="s/${opsys}.h"


#### Choose a compiler.
test -n "$CC" && cc_specified=yes

# Save the value of CFLAGS that the user specified.
SPECIFIED_CFLAGS="$CFLAGS"

dnl Sets GCC=yes if using gcc.
AC_PROG_CC
AM_PROG_CC_C_O

# Initialize gnulib right after verifying that the C compiler works.
gl_EARLY

# On Suns, sometimes $CPP names a directory.
if test -n "$CPP" && test -d "$CPP"; then
  CPP=
fi

## If not using gcc, and on Solaris, and no CPP specified, see if
## using a Sun compiler, which needs -Xs to prevent whitespace.
if test x"$GCC" != xyes && test x"$emacs_check_sunpro_c" = xyes && \
 test x"$CPP" = x; then
  AC_MSG_CHECKING([whether we are using a Sun C compiler])
  AC_CACHE_VAL(emacs_cv_sunpro_c,
  [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
[[#ifndef __SUNPRO_C
fail;
#endif
]])], emacs_cv_sunpro_c=yes, emacs_cv_sunpro_c=no)])
  AC_MSG_RESULT($emacs_cv_sunpro_c)

  if test x"$emacs_cv_sunpro_c" = xyes; then
    NON_GNU_CPP="$CC -E -Xs"
  fi
fi

#### Some systems specify a CPP to use unless we are using GCC.
#### Now that we know whether we are using GCC, we can decide whether
#### to use that one.
if test "x$NON_GNU_CPP" != x && test x$GCC != xyes && test "x$CPP" = x
then
  CPP="$NON_GNU_CPP"
fi

#### Some systems specify a CC to use unless we are using GCC.
#### Now that we know whether we are using GCC, we can decide whether
#### to use that one.
if test "x$NON_GNU_CC" != x && test x$GCC != xyes &&
  test x$cc_specified != xyes
then
  CC="$NON_GNU_CC"
fi

if test x$GCC = xyes; then
  test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
else
  test "x$NON_GCC_TEST_OPTIONS" != x && CC="$CC $NON_GCC_TEST_OPTIONS"
fi

### Use -Wdeclaration-after-statement if the compiler supports it
AC_MSG_CHECKING([whether gcc understands -Wdeclaration-after-statement])
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wdeclaration-after-statement"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], has_option=yes, has_option=no)
if test $has_option = yes; then
   C_WARNINGS_SWITCH="-Wdeclaration-after-statement $C_WARNINGS_SWITCH"
fi
AC_MSG_RESULT($has_option)
CFLAGS="$SAVE_CFLAGS"
unset has_option
unset SAVE_CFLAGS

### Use -Wold-style-definition if the compiler supports it
# This can be removed when conversion to standard C is finished.
AC_MSG_CHECKING([whether gcc understands -Wold-style-definition])
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wold-style-definition"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], has_option=yes, has_option=no)
if test $has_option = yes; then
   C_WARNINGS_SWITCH="-Wold-style-definition $C_WARNINGS_SWITCH"
fi
AC_MSG_RESULT($has_option)
CFLAGS="$SAVE_CFLAGS"
unset has_option
unset SAVE_CFLAGS

### Use -Wimplicit-function-declaration if the compiler supports it
AC_MSG_CHECKING([whether gcc understands -Wimplicit-function-declaration])
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wimplicit-function-declaration"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], has_option=yes, has_option=no)
if test $has_option = yes; then
   C_WARNINGS_SWITCH="-Wimplicit-function-declaration $C_WARNINGS_SWITCH"
fi
AC_MSG_RESULT($has_option)
CFLAGS="$SAVE_CFLAGS"
unset has_option
unset SAVE_CFLAGS

AC_SUBST(C_WARNINGS_SWITCH)


#### Some other nice autoconf tests.

dnl checks for programs
AC_PROG_CPP
AC_PROG_INSTALL
if test "x$RANLIB" = x; then
  AC_PROG_RANLIB
fi

## Although we're running on an amd64 kernel, we're actually compiling for
## the x86 architecture.  The user should probably have provided an
## explicit --build to `configure', but if everything else than the kernel
## is running in i386 mode, we can help them out.
if test "$machine" = "amdx86-64"; then
  AC_CHECK_DECL([i386])
  if test "$ac_cv_have_decl_i386" = "yes"; then
    canonical=`echo "$canonical" | sed -e 's/^amd64/i386/' -e 's/^x86_64/i386/'`
    machine=intel386
    machfile="m/${machine}.h"
  fi
fi

AC_PATH_PROG(INSTALL_INFO, install-info)
AC_PATH_PROG(INSTALL_INFO, install-info,, /usr/sbin)
AC_PATH_PROG(INSTALL_INFO, install-info,:, /sbin)
dnl Don't use GZIP, which is used by gzip for additional parameters.
AC_PATH_PROG(GZIP_PROG, gzip)


## Need makeinfo >= 4.6 (?) to build the manuals.
AC_PATH_PROG(MAKEINFO, makeinfo, no)
dnl By this stage, configure has already checked for egrep and set EGREP,
dnl or exited with an error if no egrep was found.
if test "$MAKEINFO" != "no" && \
  test x"`$MAKEINFO --version 2> /dev/null | $EGREP 'texinfo[[^0-9]]*([[1-4]][[0-9]]+|[[5-9]]|4\.[[6-9]]|4\.[[1-5]][[0-9]]+)'`" = x; then
   MAKEINFO=no
fi

## Makeinfo is unusual.  For a released Emacs, the manuals are
## pre-built, and not deleted by the normal clean rules.  makeinfo is
## therefore in the category of "special tools" not normally required, which
## configure does not have to check for (eg autoconf itself).
## In a Bazaar checkout on the other hand, the manuals are not included.
## So makeinfo is a requirement to build from Bazaar, and configure
## should test for it as it does for any other build requirement.
## We use the presence of $srcdir/info/emacs to distinguish a release,
## with pre-built manuals, from a Bazaar checkout.
HAVE_MAKEINFO=yes

if test "$MAKEINFO" = "no"; then
  MAKEINFO=makeinfo
  if test "x${with_makeinfo}" = "xno"; then
    HAVE_MAKEINFO=no
  elif test ! -e $srcdir/info/emacs; then
    AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.6, and your
source tree does not seem to have pre-built manuals in the `info' directory.
Either install a suitable version of makeinfo, or re-run configure
with the `--without-makeinfo' option to build without the manuals.] )
  fi
fi
AC_SUBST(HAVE_MAKEINFO)

dnl Add our options to ac_link now, after it is set up.

if test x$GCC = xyes; then
  test "x$GCC_LINK_TEST_OPTIONS" != x && \
    ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
else
  test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
    ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
fi

dnl We need -znocombreloc if we're using a relatively recent GNU ld.
dnl If we can link with the flag, it shouldn't do any harm anyhow.
dnl (Don't use `-z nocombreloc' as -z takes no arg on Irix.)
dnl Treat GCC specially since it just gives a non-fatal `unrecognized option'
dnl if not built to support GNU ld.

late_LDFLAGS=$LDFLAGS
if test x$GCC = xyes; then
  LDFLAGS="$LDFLAGS -Wl,-znocombreloc"
else
  LDFLAGS="$LDFLAGS -znocombreloc"
fi

AC_MSG_CHECKING([for -znocombreloc])
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
  [AC_MSG_RESULT(yes)],
  LDFLAGS=$late_LDFLAGS
  [AC_MSG_RESULT(no)])


# The value of CPP is a quoted variable reference, so we need to do this
# to get its actual value...
CPP=`eval "echo $CPP"`


dnl The function dump-emacs will not be defined and temacs will do
dnl (load "loadup") automatically unless told otherwise.
test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
case "$opsys" in
  your-opsys-here) CANNOT_DUMP=yes ;;
esac

test "$CANNOT_DUMP" = "yes" && \
  AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])

AC_SUBST(CANNOT_DUMP)


UNEXEC_OBJ=unexelf.o
case "$opsys" in
  # MSDOS uses unexcoff.o
  # MSWindows uses unexw32.o
  aix4-2)
   UNEXEC_OBJ=unexaix.o
   ;;
  cygwin)
   UNEXEC_OBJ=unexcw.o
   ;;
  darwin)
   UNEXEC_OBJ=unexmacosx.o
   ;;
  hpux10-20 | hpux11)
   UNEXEC_OBJ=unexhp9k800.o
   ;;
  sol2-10)
   # Use the Solaris dldump() function, called from unexsol.c, to dump
   # emacs, instead of the generic ELF dump code found in unexelf.c.
   # The resulting binary has a complete symbol table, and is better
   # for debugging and other observability tools (debuggers, pstack, etc).
   #
   # If you encounter a problem using dldump(), please consider sending
   # a message to the OpenSolaris tools-linking mailing list:
   #      http://mail.opensolaris.org/mailman/listinfo/tools-linking
   #
   # It is likely that dldump() works with older Solaris too, but this has
   # not been tested, so for now this change is for Solaris 10 or newer.
   UNEXEC_OBJ=unexsol.o
   ;;
esac

LD_SWITCH_SYSTEM=
case "$opsys" in
  freebsd)
   ## Let `ld' find image libs and similar things in /usr/local/lib.
   ## The system compiler, GCC, has apparently been modified to not
   ## look there, contrary to what a stock GCC would do.
   LD_SWITCH_SYSTEM=-L/usr/local/lib
   ;;

  gnu-linux)
   ## cpp test was "ifdef __mips__", but presumably this is equivalent...
   case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
   ;;

  netbsd)
   LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
   ;;

  openbsd)
   ## Han Boetes <han@mijncomputer.nl> says this is necessary,
   ## otherwise Emacs dumps core on elf systems.
   LD_SWITCH_SYSTEM="-Z"
   ;;
esac
AC_SUBST(LD_SWITCH_SYSTEM)

ac_link="$ac_link $LD_SWITCH_SYSTEM"

## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_AUX,
## which has not been defined yet.  When this was handled with cpp,
## it was expanded to null when configure sourced the s/*.h file.
## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
## (or somesuch), but because it is supposed to go at the _front_
## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
## Compare with the gnu-linux case below, which added to the end
## of LD_SWITCH_SYSTEM, and so can instead go at the front of
## LD_SWITCH_SYSTEM_TEMACS.
case "$opsys" in
  netbsd|openbsd)
   ## _AUX_RPATH is like _AUX, but uses -rpath instead of -R.
   LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_AUX_RPATH) $LD_SWITCH_SYSTEM" ;;
esac


C_SWITCH_MACHINE=
if test "$machine" = "alpha"; then
  AC_CHECK_DECL([__ELF__])
  if test "$ac_cv_have_decl___ELF__" = "yes"; then
    ## With ELF, make sure that all common symbols get allocated to in the
    ## data section.  Otherwise, the dump of temacs may miss variables in
    ## the shared library that have been initialized.  For example, with
    ## GNU libc, __malloc_initialized would normally be resolved to the
    ## shared library's .bss section, which is fatal.
    if test "x$GCC" = "xyes"; then
      C_SWITCH_MACHINE="-fno-common"
    else
      AC_MSG_ERROR([What gives?  Fix me if DEC Unix supports ELF now.])
    fi
  else
    UNEXEC_OBJ=unexalpha.o
  fi
fi
AC_SUBST(C_SWITCH_MACHINE)

AC_SUBST(UNEXEC_OBJ)

C_SWITCH_SYSTEM=
## Some programs in src produce warnings saying certain subprograms
## are too complex and need a MAXMEM value greater than 2000 for
## additional optimization.  --nils@exp-math.uni-essen.de
test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
  C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
## It is redundant in glibc2, since we define _GNU_SOURCE.
AC_SUBST(C_SWITCH_SYSTEM)


LIBS_SYSTEM=
case "$opsys" in
  ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
  aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;

  freebsd) LIBS_SYSTEM="-lutil" ;;

  hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;

  sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;

  ## Motif needs -lgen.
  unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
esac
AC_SUBST(LIBS_SYSTEM)


### Make sure subsequent tests use flags consistent with the build flags.

if test x"${OVERRIDE_CPPFLAGS}" != x; then
  CPPFLAGS="${OVERRIDE_CPPFLAGS}"
else
  CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
fi

# Suppress obsolescent Autoconf test for size_t; Emacs assumes C89 or better.
AC_DEFUN([AC_TYPE_SIZE_T])

dnl Do this early because it can frob feature test macros for Unix-98 &c.
AC_SYS_LARGEFILE


## If user specified a crt-dir, use that unconditionally.
if test "X$CRT_DIR" = "X"; then

  case "$canonical" in
    x86_64-*-linux-gnu* | s390x-*-linux-gnu*)
    ## On x86-64 and s390x GNU/Linux distributions, the standard library
    ## can be in a variety of places.  We only try /usr/lib64 and /usr/lib.
    ## For anything else (eg /usr/lib32), it is up the user to specify
    ## the location (bug#5655).
    ## Test for crtn.o, not just the directory, because sometimes the
    ## directory exists but does not have the relevant files (bug#1287).
    ## FIXME better to test for binary compatibility somehow.
    test -e /usr/lib64/crtn.o && CRT_DIR=/usr/lib64
    ;;

    powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*) CRT_DIR=/usr/lib64 ;;
  esac

  case "$opsys" in
    hpux10-20) CRT_DIR=/lib ;;
  esac

  ## Default is /usr/lib.
  test "X$CRT_DIR" = "X" && CRT_DIR=/usr/lib

  ## If we're using gcc, try to determine it automatically by asking
  ## gcc.  [If this doesn't work, CRT_DIR will remain at the
  ## system-dependent default from above.]
  if test "x${GCC}" = xyes; then
     crt_file=`$CC --print-file-name=crt1.o 2>/dev/null`
     case "$crt_file" in
       */*)
         CRT_DIR=`AS_DIRNAME(["$crt_file"])`
         ;;
     esac
  fi

else

  ## Some platforms don't use any of these files, so it is not
  ## appropriate to put this test outside the if block.
  test -e $CRT_DIR/crtn.o || test -e $CRT_DIR/crt0.o || \
    AC_MSG_ERROR([crt*.o not found in specified location.])

fi

AC_SUBST(CRT_DIR)

LIB_MATH=-lm
LIB_STANDARD=
START_FILES=

case $opsys in
  cygwin )
    LIB_MATH=
    START_FILES='pre-crt0.o'
    ;;
  darwin )
    ## Adding -lm confuses the dynamic linker, so omit it.
    LIB_MATH=
    START_FILES='pre-crt0.o'
    ;;
  freebsd )
    LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o $(CRT_DIR)/crtn.o'
    START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o $(CRT_DIR)/crtbegin.o'
    ;;
  gnu-linux | gnu-kfreebsd )
    LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtn.o'
    START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o'
    ;;
  hpux10-20 | hpux11 )
    LIB_STANDARD=-lc
    START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o'
    ;;
  netbsd | openbsd )
    if test -f $CRT_DIR/crti.o; then
	LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o $(CRT_DIR)/crtn.o'
        START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crti.o $(CRT_DIR)/crtbegin.o'
    else
	LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o'
	START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crtbegin.o'
    fi
    ;;
esac

AC_SUBST(LIB_MATH)
AC_SUBST(START_FILES)

dnl This function definition taken from Gnome 2.0
dnl PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4, action-if, action-not)
dnl defines GSTUFF_LIBS, GSTUFF_CFLAGS, see pkg-config man page
dnl also defines GSTUFF_PKG_ERRORS on error
AC_DEFUN([PKG_CHECK_MODULES], [
  succeeded=no

  AC_PATH_PROG(PKG_CONFIG, pkg-config, no)

  if test "$PKG_CONFIG" = "no" ; then
     ifelse([$4], , [AC_MSG_ERROR([
      *** The pkg-config script could not be found. Make sure it is in your path, or give the full path to pkg-config with the PKG_CONFIG environment variable or --with-pkg-config-prog.  Or see http://www.freedesktop.org/software/pkgconfig to get pkg-config.])], [$4])
  else
     PKG_CONFIG_MIN_VERSION=0.9.0
     if $PKG_CONFIG --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then
        AC_MSG_CHECKING(for $2)

        if $PKG_CONFIG --exists "$2" 2>&AS_MESSAGE_LOG_FD; then
            AC_MSG_RESULT(yes)
            succeeded=yes

            AC_MSG_CHECKING($1_CFLAGS)
            $1_CFLAGS=`$PKG_CONFIG --cflags "$2"|sed -e 's,///*,/,g'`
            AC_MSG_RESULT($$1_CFLAGS)

            AC_MSG_CHECKING($1_LIBS)
            $1_LIBS=`$PKG_CONFIG --libs "$2"|sed -e 's,///*,/,g'`
            AC_MSG_RESULT($$1_LIBS)
        else
            AC_MSG_RESULT(no)
            $1_CFLAGS=""
            $1_LIBS=""
            ## If we have a custom action on failure, don't print errors, but
            ## do set a variable so people can do so.
            $1_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
            ifelse([$4], ,echo $$1_PKG_ERRORS,)
        fi

        AC_SUBST($1_CFLAGS)
        AC_SUBST($1_LIBS)
     else
        echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."
        echo "*** See http://www.freedesktop.org/software/pkgconfig"
     fi
  fi

  if test $succeeded = yes; then
     ifelse([$3], , :, [$3])
  else
     ifelse([$4], , [AC_MSG_ERROR([Library requirements ($2) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.])], [$4])
  fi
])


if test "${with_sound}" != "no"; then
  # Sound support for GNU/Linux and the free BSDs.
  AC_CHECK_HEADERS(machine/soundcard.h sys/soundcard.h soundcard.h,
    have_sound_header=yes)
  # Emulation library used on NetBSD.
  AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
  AC_SUBST(LIBSOUND)

  ALSA_REQUIRED=1.0.0
  ALSA_MODULES="alsa >= $ALSA_REQUIRED"
  PKG_CHECK_MODULES(ALSA, $ALSA_MODULES, HAVE_ALSA=yes, HAVE_ALSA=no)
  if test $HAVE_ALSA = yes; then
    SAVE_CFLAGS="$CFLAGS"
    SAVE_LDFLAGS="$LDFLAGS"
    CFLAGS="$ALSA_CFLAGS $CFLAGS"
    LDFLAGS="$ALSA_LIBS $LDFLAGS"
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
                    emacs_alsa_normal=yes,
	            emacs_alsa_normal=no)
    if test "$emacs_alsa_normal" != yes; then
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
                     [[snd_lib_error_set_handler (0);]])],
                     emacs_alsa_subdir=yes,
	             emacs_alsa_subdir=no)
      if test "$emacs_alsa_subdir" != yes; then
        AC_MSG_ERROR([pkg-config found alsa, but it does not compile.  See config.log for error messages.])
      fi
      ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
    fi

    CFLAGS="$SAVE_CFLAGS"
    LDFLAGS="$SAVE_LDFLAGS"
    LIBSOUND="$LIBSOUND $ALSA_LIBS"
    CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
    AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
  fi

  dnl Define HAVE_SOUND if we have sound support.  We know it works and
  dnl compiles only on the specified platforms.  For others, it
  dnl probably doesn't make sense to try.
  if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
     case "$opsys" in
       dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
       gnu-linux|freebsd|netbsd)
         AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
         ;;
     esac
  fi

  AC_SUBST(CFLAGS_SOUND)
fi

dnl checks for header files
AC_CHECK_HEADERS(sys/select.h sys/time.h unistd.h utime.h \
  linux/version.h sys/systeminfo.h limits.h \
  stdio_ext.h fcntl.h coff.h pty.h sys/mman.h \
  sys/vlimit.h sys/resource.h locale.h sys/_mbstate_t.h \
  sys/utsname.h pwd.h utmp.h dirent.h util.h)

AC_MSG_CHECKING(if personality LINUX32 can be set)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/personality.h>]], [[personality (PER_LINUX32)]])],
               emacs_cv_personality_linux32=yes,
	       emacs_cv_personality_linux32=no)
AC_MSG_RESULT($emacs_cv_personality_linux32)

if test $emacs_cv_personality_linux32 = yes; then
  AC_DEFINE(HAVE_PERSONALITY_LINUX32, 1,
            [Define to 1 if personality LINUX32 can be set.])
fi

dnl On Solaris 8 there's a compilation warning for term.h because
dnl it doesn't define `bool'.
AC_CHECK_HEADERS(term.h, , , -)
AC_HEADER_STDC
AC_HEADER_TIME
AC_CHECK_DECLS([sys_siglist])
if test $ac_cv_have_decl_sys_siglist != yes; then
  # For Tru64, at least:
  AC_CHECK_DECLS([__sys_siglist])
  if test $ac_cv_have_decl___sys_siglist = yes; then
    AC_DEFINE(sys_siglist, __sys_siglist,
              [Define to any substitute for sys_siglist.])
  fi
fi
AC_HEADER_SYS_WAIT

dnl Some systems have utime.h but don't declare the struct anyplace.
AC_CACHE_CHECK(for struct utimbuf, emacs_cv_struct_utimbuf,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif]], [[static struct utimbuf x; x.actime = x.modtime;]])],
  emacs_cv_struct_utimbuf=yes, emacs_cv_struct_utimbuf=no))
if test $emacs_cv_struct_utimbuf = yes; then
  AC_DEFINE(HAVE_STRUCT_UTIMBUF, 1, [Define to 1 if `struct utimbuf' is declared by <utime.h>.])
fi

dnl Check for speed_t typedef.
AC_CACHE_CHECK(for speed_t, emacs_cv_speed_t,
  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <termios.h>]], [[speed_t x = 1;]])],
    emacs_cv_speed_t=yes, emacs_cv_speed_t=no)])
if test $emacs_cv_speed_t = yes; then
  AC_DEFINE(HAVE_SPEED_T, 1,
  	   [Define to 1 if `speed_t' is declared by <termios.h>.])
fi

AC_CACHE_CHECK(for struct timeval, emacs_cv_struct_timeval,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif]], [[static struct timeval x; x.tv_sec = x.tv_usec;]])],
  emacs_cv_struct_timeval=yes, emacs_cv_struct_timeval=no))
HAVE_TIMEVAL=$emacs_cv_struct_timeval
if test $emacs_cv_struct_timeval = yes; then
  AC_DEFINE(HAVE_TIMEVAL, 1, [Define to 1 if `struct timeval' is declared by <sys/time.h>.])
fi

AC_CACHE_CHECK(for struct exception, emacs_cv_struct_exception,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]],
[[static struct exception x; x.arg1 = x.arg2 = x.retval; x.name = ""; x.type = 1;]])],
  emacs_cv_struct_exception=yes, emacs_cv_struct_exception=no))
HAVE_EXCEPTION=$emacs_cv_struct_exception
if test $emacs_cv_struct_exception != yes; then
  AC_DEFINE(NO_MATHERR, 1, [Define to 1 if you don't have struct exception in math.h.])
fi

AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif])

dnl checks for structure members
AC_STRUCT_TM
AC_STRUCT_TIMEZONE
AC_CHECK_MEMBER(struct tm.tm_gmtoff,
		[AC_DEFINE(HAVE_TM_GMTOFF, 1,
			   [Define to 1 if `tm_gmtoff' is member of `struct tm'.])],,
		[#include <time.h>])
AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
		  struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
		  struct ifreq.ifr_addr], , ,
		 [AC_INCLUDES_DEFAULT
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#if HAVE_NET_IF_H
#include <net/if.h>
#endif])

dnl checks for compiler characteristics

dnl Testing __STDC__ to determine prototype support isn't good enough.
dnl DEC C, for instance, doesn't define it with default options, and
dnl is used on 64-bit systems (OSF Alphas).  Similarly for volatile
dnl and void *.
AC_C_PROTOTYPES
AC_C_VOLATILE
AC_C_CONST
AC_CACHE_CHECK([for void * support], emacs_cv_void_star,
  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[void * foo;]])],
                   emacs_cv_void_star=yes, emacs_cv_void_star=no)])
if test $emacs_cv_void_star = yes; then
  AC_DEFINE(POINTER_TYPE, void)
else
  AC_DEFINE(POINTER_TYPE, char)
fi
AH_TEMPLATE(POINTER_TYPE,
	    [Define as `void' if your compiler accepts `void *'; otherwise
	     define as `char'.])dnl

dnl Check for endianess
AC_C_BIGENDIAN

AC_CACHE_CHECK([for  __attribute__ ((__aligned__ (expr)))],
  [emacs_cv_attribute_aligned],
  [AC_COMPILE_IFELSE(
     [AC_LANG_PROGRAM(
	[[char __attribute__ ((__aligned__ (1 << 3))) c;]],
	[[]])],
     [emacs_cv_attribute_aligned=yes],
     [emacs_cv_attribute_aligned=no])])
if test $emacs_cv_attribute_aligned = yes; then
  AC_DEFINE([HAVE_ATTRIBUTE_ALIGNED], 1,
    [Define to 1 if GCC-style __attribute__ ((__aligned__ (expr))) works.])
fi

dnl check for Make feature
AC_PROG_MAKE_SET

DEPFLAGS=
MKDEPDIR=":"
deps_frag=deps.mk
dnl check for GNU Make if we have GCC and autodepend is on.
if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
   AC_MSG_CHECKING([whether we are using GNU Make])
   HAVE_GNU_MAKE=no
   testval=`make --version 2>/dev/null | grep 'GNU Make'`
   if test "x$testval" != x; then
      HAVE_GNU_MAKE=yes
   else
      ac_enable_autodepend=no
   fi
   AC_MSG_RESULT([$HAVE_GNU_MAKE])
   if test $HAVE_GNU_MAKE = yes; then
      AC_MSG_CHECKING([whether gcc understands -MMD -MF])
      SAVE_CFLAGS="$CFLAGS"
      CFLAGS="$CFLAGS -MMD -MF deps.d"
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], , ac_enable_autodepend=no)
      CFLAGS="$SAVE_CFLAGS"
      test -f deps.d || ac_enable_autodepend=no
      rm -rf deps.d
      AC_MSG_RESULT([$ac_enable_autodepend])
   fi
   if test $ac_enable_autodepend = yes; then
      DEPFLAGS='-MMD -MF ${DEPDIR}/$*.d'
      ## In parallel builds, another make might create depdir between
      ## the first test and mkdir, so stick another test on the end.
      ## Or use install-sh -d?  mkdir -p is not portable.
      MKDEPDIR='test -d ${DEPDIR} || mkdir ${DEPDIR} || test -d ${DEPDIR}'
      deps_frag=autodeps.mk
   fi
fi
deps_frag=$srcdir/src/$deps_frag
AC_SUBST(MKDEPDIR)
AC_SUBST(DEPFLAGS)
AC_SUBST_FILE(deps_frag)


lisp_frag=$srcdir/src/lisp.mk
AC_SUBST_FILE(lisp_frag)


dnl checks for operating system services
AC_SYS_LONG_FILE_NAMES

#### Choose a window system.

AC_PATH_X
if test "$no_x" = yes; then
  window_system=none
else
  window_system=x11
fi

## Workaround for bug in autoconf <= 2.62.
## http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01551.html
## No need to do anything special for these standard directories.
if test -n "${x_libraries}" && test x"${x_libraries}" != xNONE; then

   x_libraries=`echo :${x_libraries}: | sed -e 's|:/usr/lib64:|:|g' -e 's|:/lib64:|:|g' -e 's|^:||' -e 's|:$||'`

fi

LD_SWITCH_X_SITE_AUX=
LD_SWITCH_X_SITE_AUX_RPATH=
if test "${x_libraries}" != NONE; then
  if test -n "${x_libraries}"; then
    LD_SWITCH_X_SITE=-L`echo ${x_libraries} | sed -e "s/:/ -L/g"`
    LD_SWITCH_X_SITE_AUX=-R`echo ${x_libraries} | sed -e "s/:/ -R/g"`
    LD_SWITCH_X_SITE_AUX_RPATH=`echo ${LD_SWITCH_X_SITE_AUX} | sed -e 's/-R/-Wl,-rpath,/'`
  fi
  x_default_search_path=""
  x_search_path=${x_libraries}
  if test -z "${x_search_path}"; then
    x_search_path=/usr/lib
  fi
  for x_library in `echo ${x_search_path}: | \
		    sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
    x_search_path="\
${x_library}/X11/%L/%T/%N%C%S:\
${x_library}/X11/%l/%T/%N%C%S:\
${x_library}/X11/%T/%N%C%S:\
${x_library}/X11/%L/%T/%N%S:\
${x_library}/X11/%l/%T/%N%S:\
${x_library}/X11/%T/%N%S"
    if test x"${x_default_search_path}" = x; then
      x_default_search_path=${x_search_path}
    else
      x_default_search_path="${x_search_path}:${x_default_search_path}"
    fi
  done
fi
AC_SUBST(LD_SWITCH_X_SITE_AUX)
AC_SUBST(LD_SWITCH_X_SITE_AUX_RPATH)

if test "${x_includes}" != NONE && test -n "${x_includes}"; then
  C_SWITCH_X_SITE=-I`echo ${x_includes} | sed -e "s/:/ -I/g"`
fi

if test x"${x_includes}" = x; then
  bitmapdir=/usr/include/X11/bitmaps
else
  # accumulate include directories that have X11 bitmap subdirectories
  bmd_acc="dummyval"
  for bmd in `echo ${x_includes} | sed -e "s/:/ /g"`; do
    if test -d "${bmd}/X11/bitmaps"; then
      bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
    fi
    if test -d "${bmd}/bitmaps"; then
      bmd_acc="${bmd_acc}:${bmd}/bitmaps"
    fi
  done
  if test ${bmd_acc} != "dummyval"; then
    bitmapdir=`echo ${bmd_acc} | sed -e "s/^dummyval://"`
  fi
fi

HAVE_NS=no
NS_IMPL_COCOA=no
NS_IMPL_GNUSTEP=no
tmp_CPPFLAGS="$CPPFLAGS"
tmp_CFLAGS="$CFLAGS"
CPPFLAGS="$CPPFLAGS -x objective-c"
CFLAGS="$CFLAGS -x objective-c"
TEMACS_LDFLAGS2="\${LDFLAGS}"
dnl I don't think it's especially important, but src/Makefile.in
dnl (now the only user of ns_appdir) used to go to the trouble of adding a
dnl trailing "/" to it, so now we do it here.
if test "${with_ns}" != no; then
  if test "${opsys}" = darwin; then
     NS_IMPL_COCOA=yes
     ns_appdir=`pwd`/nextstep/Emacs.app
     ns_appbindir=${ns_appdir}/Contents/MacOS/
     ns_appresdir=${ns_appdir}/Contents/Resources
     ns_appsrc=${srcdir}/nextstep/Cocoa/Emacs.base
  elif test -f $GNUSTEP_CONFIG_FILE; then
     NS_IMPL_GNUSTEP=yes
     ns_appdir=`pwd`/nextstep/Emacs.app
     ns_appbindir=${ns_appdir}/
     ns_appresdir=${ns_appdir}/Resources
     ns_appsrc=${srcdir}/nextstep/GNUstep/Emacs.base
     dnl FIXME sourcing this several times in subshells seems inefficient.
     GNUSTEP_SYSTEM_HEADERS="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_SYSTEM_HEADERS)"
     GNUSTEP_SYSTEM_LIBRARIES="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_SYSTEM_LIBRARIES)"
     dnl I seemed to need these as well with GNUstep-startup 0.25.
     GNUSTEP_LOCAL_HEADERS="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_LOCAL_HEADERS)"
     GNUSTEP_LOCAL_LIBRARIES="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_LOCAL_LIBRARIES)"
     test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
       GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
     test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
       GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
     CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
     CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
     LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
     LIB_STANDARD=
     START_FILES=
     TEMACS_LDFLAGS2=
  fi
  AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
  		  [AC_MSG_ERROR([`--with-ns' was specified, but the include
  files are missing or cannot be compiled.])])
  NS_HAVE_NSINTEGER=yes
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <Foundation/NSObjCRuntime.h>],
                                     [NSInteger i;])],
		    ns_have_nsinteger=yes,
		    ns_have_nsinteger=no)
  if test $ns_have_nsinteger = no; then
    NS_HAVE_NSINTEGER=no
  fi
fi
AC_SUBST(TEMACS_LDFLAGS2)

ns_frag=/dev/null
NS_OBJ=
NS_OBJC_OBJ=
if test "${HAVE_NS}" = yes; then
  window_system=nextstep
  with_xft=no
  # set up packaging dirs
  exec_prefix=${ns_appbindir}
  libexecdir=${ns_appbindir}/libexec
  if test "${EN_NS_SELF_CONTAINED}" = yes; then
     prefix=${ns_appresdir}
  fi
  ns_frag=$srcdir/src/ns.mk
  NS_OBJ="fontset.o fringe.o image.o"
  NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o nsfont.o"
fi
CFLAGS="$tmp_CFLAGS"
CPPFLAGS="$tmp_CPPFLAGS"
AC_SUBST(NS_OBJ)
AC_SUBST(NS_OBJC_OBJ)
AC_SUBST(LIB_STANDARD)
AC_SUBST_FILE(ns_frag)

case "${window_system}" in
  x11 )
    HAVE_X_WINDOWS=yes
    HAVE_X11=yes
    case "${with_x_toolkit}" in
      athena | lucid ) USE_X_TOOLKIT=LUCID ;;
      motif ) USE_X_TOOLKIT=MOTIF ;;
      gtk ) with_gtk=yes
dnl Dont set this for GTK.  A lot of tests below assumes Xt when
dnl USE_X_TOOLKIT is set.
            USE_X_TOOLKIT=none ;;
      gtk3 ) with_gtk3=yes
             USE_X_TOOLKIT=none ;;
      no ) USE_X_TOOLKIT=none ;;
dnl If user did not say whether to use a toolkit, make this decision later:
dnl use the toolkit if we have gtk, or X11R5 or newer.
      * ) USE_X_TOOLKIT=maybe ;;
    esac
  ;;
  nextstep | none )
    HAVE_X_WINDOWS=no
    HAVE_X11=no
    USE_X_TOOLKIT=none
  ;;
esac

if test "$window_system" = none && test "X$with_x" != "Xno"; then
   AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
   if test "$HAVE_XSERVER" = true ||
      test -n "$DISPLAY" ||
      test "`echo /usr/lib/libX11.*`" != "/usr/lib/libX11.*"; then
        AC_MSG_ERROR([You seem to be running X, but no X development libraries
were found.  You should install the relevant development files for X
and for the toolkit you want, such as Gtk+, Lesstif or Motif.  Also make
sure you have development files for image handling, i.e.
tiff, gif, jpeg, png and xpm.
If you are sure you want Emacs compiled without X window support, pass
  --without-x
to configure.])
   fi
fi

### If we're using X11, we should use the X menu package.
HAVE_MENUS=no
case ${HAVE_X11} in
  yes ) HAVE_MENUS=yes ;;
esac

# Do the opsystem or machine files prohibit the use of the GNU malloc?
# Assume not, until told otherwise.
GNU_MALLOC=yes
doug_lea_malloc=yes
AC_CHECK_FUNC(malloc_get_state, ,doug_lea_malloc=no)
AC_CHECK_FUNC(malloc_set_state, ,doug_lea_malloc=no)
AC_CACHE_CHECK(whether __after_morecore_hook exists,
	       emacs_cv_var___after_morecore_hook,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern void (* __after_morecore_hook)();]],[[__after_morecore_hook = 0]])],
  emacs_cv_var___after_morecore_hook=yes,
  emacs_cv_var___after_morecore_hook=no)])
if test $emacs_cv_var___after_morecore_hook = no; then
  doug_lea_malloc=no
fi


dnl See comments in aix4-2.h about maybe using system malloc there.
system_malloc=no
case "$opsys" in
  ## darwin ld insists on the use of malloc routines in the System framework.
  darwin|sol2-10) system_malloc=yes ;;
esac

if test "${system_malloc}" = "yes"; then
  AC_DEFINE(SYSTEM_MALLOC, 1, [Define to use system malloc.])
  GNU_MALLOC=no
  GNU_MALLOC_reason="
    (The GNU allocators don't work with this system configuration.)"
  GMALLOC_OBJ=
  VMLIMIT_OBJ=
else
  test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
  VMLIMIT_OBJ=vm-limit.o
fi
AC_SUBST(GMALLOC_OBJ)
AC_SUBST(VMLIMIT_OBJ)

if test "$doug_lea_malloc" = "yes" ; then
  if test "$GNU_MALLOC" = yes ; then
    GNU_MALLOC_reason="
      (Using Doug Lea's new malloc from the GNU C Library.)"
  fi
  AC_DEFINE(DOUG_LEA_MALLOC, 1,
	    [Define to 1 if you are using the GNU C Library.])

  ## Use mmap directly for allocating larger buffers.
  ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
  ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
  ## Does the AC_FUNC_MMAP test below make this check unecessary?
  case "$opsys" in
    gnu*) REL_ALLOC=no ;;
  esac
fi

if test x"${REL_ALLOC}" = x; then
  REL_ALLOC=${GNU_MALLOC}
fi

use_mmap_for_buffers=no
case "$opsys" in
  cygwin|freebsd|irix6-5) use_mmap_for_buffers=yes ;;
esac

AC_FUNC_MMAP
if test $use_mmap_for_buffers = yes; then
  AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
  REL_ALLOC=no
fi

LIBS="$LIBS_SYSTEM $LIBS"

dnl If found, this defines HAVE_LIBDNET, which m/pmax.h checks,
dnl and also adds -ldnet to LIBS, which Autoconf uses for checks.
AC_CHECK_LIB(dnet, dnet_ntoa)
dnl This causes -lresolv to get used in subsequent tests,
dnl which causes failures on some systems such as HPUX 9.
dnl AC_CHECK_LIB(resolv, gethostbyname)

dnl FIXME replace main with a function we actually want from this library.
AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")

AC_CHECK_LIB(pthreads, cma_open)

## Note: when using cpp in s/aix4.2.h, this definition depended on
## HAVE_LIBPTHREADS.  That was not defined earlier in configure when
## the system file was sourced.  Hence the value of LIBS_SYSTEM
## added to LIBS in configure would never contain the pthreads part,
## but the value used in Makefiles might.  FIXME?
##
## -lpthreads seems to be necessary for Xlib in X11R6, and should
## be harmless on older versions of X where it happens to exist.
test "$opsys" = "aix4-2" && \
  test $ac_cv_lib_pthreads_cma_open = yes && \
  LIBS_SYSTEM="$LIBS_SYSTEM -lpthreads"

dnl Check for need for bigtoc support on IBM AIX

case ${host_os} in
aix*)
  AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
    case $GCC in
    yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
    *) gdb_cv_bigtoc=-bbigtoc ;;
    esac

    LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
    AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
  ])
  ;;
esac

# Change CFLAGS and CPPFLAGS temporarily so that C_SWITCH_X_SITE gets
# used for the tests that follow.  We set them back to REAL_CFLAGS and
# REAL_CPPFLAGS later on.

REAL_CFLAGS="$CFLAGS"
REAL_CPPFLAGS="$CPPFLAGS"

if test "${HAVE_X11}" = "yes"; then
  DEFS="$C_SWITCH_X_SITE $DEFS"
  LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
  LIBS="-lX11 $LIBS"
  CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
  CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"

  # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
  # This is handled by LD_SWITCH_X_SITE_AUX during the real build,
  # but it's more convenient here to set LD_RUN_PATH
  # since this also works on hosts that don't understand LD_SWITCH_X_SITE_AUX.
  if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
    LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
    export LD_RUN_PATH
  fi

  if test "${opsys}" = "gnu-linux"; then
    AC_MSG_CHECKING(whether X on GNU/Linux needs -b to link)
    AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
     [[XOpenDisplay ("foo");]])],
     [xlinux_first_failure=no],
     [xlinux_first_failure=yes])
    if test "${xlinux_first_failure}" = "yes"; then
      OLD_LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE"
      OLD_C_SWITCH_X_SITE="$C_SWITCH_X_SITE"
      OLD_CPPFLAGS="$CPPFLAGS"
      OLD_LIBS="$LIBS"
      LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
      C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
      CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
      LIBS="$LIBS -b i486-linuxaout"
      AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
       [[XOpenDisplay ("foo");]])],
       [xlinux_second_failure=no],
       [xlinux_second_failure=yes])
      if test "${xlinux_second_failure}" = "yes"; then
	# If we get the same failure with -b, there is no use adding -b.
	# So take it out.  This plays safe.
	LD_SWITCH_X_SITE="$OLD_LD_SWITCH_X_SITE"
	C_SWITCH_X_SITE="$OLD_C_SWITCH_X_SITE"
	CPPFLAGS="$OLD_CPPFLAGS"
	LIBS="$OLD_LIBS"
        AC_MSG_RESULT(no)
      else
        AC_MSG_RESULT(yes)
      fi
    else
      AC_MSG_RESULT(no)
    fi
  fi

  # Reportedly, some broken Solaris systems have XKBlib.h but are missing
  # header files included from there.
  AC_MSG_CHECKING(for Xkb)
  AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
#include <X11/XKBlib.h>]],
	[[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
	emacs_xkb=yes, emacs_xkb=no)
  AC_MSG_RESULT($emacs_xkb)
  if test $emacs_xkb = yes; then
    AC_DEFINE(HAVE_XKBGETKEYBOARD, 1, [Define to 1 if you have the XkbGetKeyboard function.])
  fi

  AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
XScreenNumberOfScreen XSetWMProtocols)
fi

if test "${window_system}" = "x11"; then
  AC_MSG_CHECKING(X11 version 6)
  AC_CACHE_VAL(emacs_cv_x11_version_6,
  [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
[[#if XlibSpecificationRelease < 6
fail;
#endif
]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
  if test $emacs_cv_x11_version_6 = yes; then
    AC_MSG_RESULT(6 or newer)
    AC_DEFINE(HAVE_X11R6, 1,
	      [Define to 1 if you have the X11R6 or newer version of Xlib.])
    AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
    ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
    ## XIM support.
    case "$opsys" in
      sol2-*) : ;;
      *) AC_DEFINE(HAVE_X11R6_XIM, 1,
           [Define if you have usable X11R6-style XIM support.])
         ;;
    esac
  else
    AC_MSG_RESULT(before 6)
  fi
fi


### Use -lrsvg-2 if available, unless `--with-rsvg=no' is specified.
HAVE_RSVG=no
if test "${HAVE_X11}" = "yes" || test "${NS_IMPL_GNUSTEP}" = "yes"; then
  if test "${with_rsvg}" != "no"; then
    RSVG_REQUIRED=2.11.0
    RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"

    PKG_CHECK_MODULES(RSVG, $RSVG_MODULE, HAVE_RSVG=yes, :)
    AC_SUBST(RSVG_CFLAGS)
    AC_SUBST(RSVG_LIBS)

    if test $HAVE_RSVG = yes; then
      AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
      CFLAGS="$CFLAGS $RSVG_CFLAGS"
      LIBS="$RSVG_LIBS $LIBS"
    fi
  fi
fi

HAVE_IMAGEMAGICK=no
if test "${HAVE_X11}" = "yes"; then
  if test "${with_imagemagick}" != "no"; then
    ## 6.2.8 is the earliest version known to work, but earlier versions
    ## might work - let us know if you find one.
    ## 6.0.7 does not work.  See bug#7955.
    IMAGEMAGICK_MODULE="Wand >= 6.2.8"
    PKG_CHECK_MODULES(IMAGEMAGICK, $IMAGEMAGICK_MODULE, HAVE_IMAGEMAGICK=yes, :)
    AC_SUBST(IMAGEMAGICK_CFLAGS)
    AC_SUBST(IMAGEMAGICK_LIBS)

    if test $HAVE_IMAGEMAGICK = yes; then
      AC_DEFINE(HAVE_IMAGEMAGICK, 1, [Define to 1 if using imagemagick.])
      CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
      LIBS="$IMAGEMAGICK_LIBS $LIBS"
      AC_CHECK_FUNCS(MagickExportImagePixels)
    fi
  fi
fi


HAVE_GTK=no
GTK_OBJ=
if test "${with_gtk3}" = "yes"; then
  GLIB_REQUIRED=2.28
  GTK_REQUIRED=3.0
  GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"

  dnl Checks for libraries.
  PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
  if test "$pkg_check_gtk" = "no" && test "$USE_X_TOOLKIT" != "maybe"; then
     AC_MSG_ERROR($GTK_PKG_ERRORS)
  fi
  AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
  GTK_OBJ=emacsgtkfixed.o
fi

if test "$pkg_check_gtk" != "yes"; then
  HAVE_GTK=no
if test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
  GLIB_REQUIRED=2.6
  GTK_REQUIRED=2.6
  GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"

  dnl Checks for libraries.
  PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
  if test "$pkg_check_gtk" = "no" && test "$USE_X_TOOLKIT" != "maybe"; then
     AC_MSG_ERROR($GTK_PKG_ERRORS)
  fi
fi
fi

if test x"$pkg_check_gtk" = xyes; then

  AC_SUBST(GTK_CFLAGS)
  AC_SUBST(GTK_LIBS)
  C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
  CFLAGS="$CFLAGS $GTK_CFLAGS"
  LIBS="$GTK_LIBS $LIBS"
  dnl Try to compile a simple GTK program.
  GTK_COMPILES=no
  AC_CHECK_FUNCS(gtk_main, GTK_COMPILES=yes)
  if test "${GTK_COMPILES}" != "yes"; then
    if test "$USE_X_TOOLKIT" != "maybe"; then
      AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log.  Maybe some x11-devel files missing?]);
    fi
  else
    HAVE_GTK=yes
    AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
    GTK_OBJ="gtkutil.o $GTK_OBJ"
    USE_X_TOOLKIT=none
    if $PKG_CONFIG --atleast-version=2.10 gtk+-2.0; then
      :
    else
      AC_MSG_WARN([[Your version of Gtk+ will have problems with
       closing open displays.  This is no problem if you just use
       one display, but if you use more than one and close one of them
       Emacs may crash.]])
      sleep 3
    fi
  fi

fi
AC_SUBST(GTK_OBJ)


if test "${HAVE_GTK}" = "yes"; then

  dnl  GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
  dnl  a lot if #ifdef:s, say we have toolkit scrollbars.
  if test "$with_toolkit_scroll_bars" != no; then
    with_toolkit_scroll_bars=yes
  fi

  dnl  Check if we have the old file selection dialog declared and
  dnl  in the link library.  In 2.x it may be in the library,
  dnl  but not declared if deprecated featured has been selected out.
  dnl  AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
  HAVE_GTK_FILE_SELECTION=no
  AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
                   HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
#include <gtk/gtk.h>])
  if test "$HAVE_GTK_FILE_SELECTION" = yes; then
    AC_CHECK_FUNCS(gtk_file_selection_new)
  fi

  dnl Check if pthreads are available.  Emacs only needs this when using
  dnl gtk_file_chooser under Gnome.
    HAVE_GTK_AND_PTHREAD=no
    AC_CHECK_HEADERS(pthread.h)
    if test "$ac_cv_header_pthread_h"; then
      AC_CHECK_LIB(pthread, pthread_self, HAVE_GTK_AND_PTHREAD=yes)
    fi
    if test "$HAVE_GTK_AND_PTHREAD" = yes; then
      case "${canonical}" in
        *-hpux*) ;;
        *) GTK_LIBS="$GTK_LIBS -lpthread" ;;
      esac
      AC_DEFINE(HAVE_GTK_AND_PTHREAD, 1,
               [Define to 1 if you have GTK and pthread (-lpthread).])
    fi

  dnl Check for functions introduced in 2.14 and later.
  AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
                 gtk_dialog_get_action_area gtk_widget_get_sensitive \
                 gtk_widget_get_mapped gtk_adjustment_get_page_size \
                 gtk_orientable_set_orientation)

fi

dnl D-Bus has been tested under GNU/Linux only.  Must be adapted for
dnl other platforms.  Support for higher D-Bus versions than 1.0 is
dnl also not configured.
HAVE_DBUS=no
DBUS_OBJ=
if test "${with_dbus}" = "yes"; then
   PKG_CHECK_MODULES(DBUS, dbus-1 >= 1.0, HAVE_DBUS=yes, HAVE_DBUS=no)
   if test "$HAVE_DBUS" = yes; then
     LIBS="$LIBS $DBUS_LIBS"
     AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
     AC_CHECK_FUNCS([dbus_watch_get_unix_fd])
     DBUS_OBJ=dbusbind.o
   fi
fi
AC_SUBST(DBUS_OBJ)

dnl GConf has been tested under GNU/Linux only.
dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
HAVE_GCONF=no
if test "${HAVE_X11}" = "yes" && test "${with_gconf}" = "yes"; then
   PKG_CHECK_MODULES(GCONF, gconf-2.0 >= 2.13, HAVE_GCONF=yes, HAVE_GCONF=no)
   if test "$HAVE_GCONF" = yes; then
      AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
      dnl Newer GConf doesn't link with g_objects, so this is not defined.
      AC_CHECK_FUNCS([g_type_init])
   fi
fi

dnl SELinux is available for GNU/Linux only.
HAVE_LIBSELINUX=no
LIBSELINUX_LIBS=
if test "${with_selinux}" = "yes"; then
   AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
   if test "$HAVE_LIBSELINUX" = yes; then
      AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
      LIBSELINUX_LIBS=-lselinux
   fi
fi
AC_SUBST(LIBSELINUX_LIBS)

HAVE_GNUTLS=no
HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY=no
if test "${with_gnutls}" = "yes" ; then
  PKG_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.6.0], HAVE_GNUTLS=yes, HAVE_GNUTLS=no)
  if test "${HAVE_GNUTLS}" = "yes"; then
    AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
  fi

  CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
  LIBS="$LIBGNUTLS_LIBS $LIBS"
  AC_CHECK_FUNCS(gnutls_certificate_set_verify_function, HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY=yes)

  if test "${HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY}" = "yes"; then
    AC_DEFINE(HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY, 1, [Define if using GnuTLS certificate verification callbacks.])
  fi
fi

AC_SUBST(LIBGNUTLS_LIBS)
AC_SUBST(LIBGNUTLS_CFLAGS)

dnl Do not put whitespace before the #include statements below.
dnl Older compilers (eg sunos4 cc) choke on it.
HAVE_XAW3D=no
LUCID_LIBW=
if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
  if test "$with_xaw3d" != no; then
    AC_MSG_CHECKING(for xaw3d)
    AC_CACHE_VAL(emacs_cv_xaw3d,
    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <X11/Intrinsic.h>
#include <X11/Xaw3d/Simple.h>]],
      [[]])],
      [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
                    emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
      emacs_cv_xaw3d=no)])
  else
    emacs_cv_xaw3d=no
  fi
  if test $emacs_cv_xaw3d = yes; then
    AC_MSG_RESULT([yes; using Lucid toolkit])
    USE_X_TOOLKIT=LUCID
    HAVE_XAW3D=yes
    LUCID_LIBW=-lXaw3d
    AC_DEFINE(HAVE_XAW3D, 1,
              [Define to 1 if you have the Xaw3d library (-lXaw3d).])
  else
    AC_MSG_RESULT(no)
    AC_MSG_CHECKING(for libXaw)
    AC_CACHE_VAL(emacs_cv_xaw,
    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <X11/Intrinsic.h>
#include <X11/Xaw/Simple.h>]],
      [[]])],
      emacs_cv_xaw=yes,
      emacs_cv_xaw=no)])
    if test $emacs_cv_xaw = yes; then
      AC_MSG_RESULT([yes; using Lucid toolkit])
      USE_X_TOOLKIT=LUCID
      LUCID_LIBW=-lXaw
    elif test x"${USE_X_TOOLKIT}" = xLUCID; then
      AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
    else
      AC_MSG_ERROR([No X toolkit could be found.
If you are sure you want Emacs compiled without an X toolkit, pass
  --with-x-toolkit=no
to configure.  Otherwise, install the development libraries for the toolkit
that you want to use (e.g. Gtk+) and re-run configure.])
    fi
  fi
fi

X_TOOLKIT_TYPE=$USE_X_TOOLKIT

LIBXTR6=
if test "${USE_X_TOOLKIT}" != "none"; then
  AC_MSG_CHECKING(X11 toolkit version)
  AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
  [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
[[#if XtSpecificationRelease < 6
fail;
#endif
]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
  HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
  if test $emacs_cv_x11_toolkit_version_6 = yes; then
    AC_MSG_RESULT(6 or newer)
    AC_DEFINE(HAVE_X11XTR6, 1,
	      [Define to 1 if you have the X11R6 or newer version of Xt.])
    LIBXTR6="-lSM -lICE"
    case "$opsys" in
      ## Use libw.a along with X11R6 Xt.
      unixware) LIBXTR6="$LIBXTR6 -lw" ;;
    esac
  else
    AC_MSG_RESULT(before 6)
  fi

dnl If using toolkit, check whether libXmu.a exists.
dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
  OLDLIBS="$LIBS"
  if test x$HAVE_X11XTR6 = xyes; then
    LIBS="-lXt -lSM -lICE $LIBS"
  else
    LIBS="-lXt $LIBS"
  fi
  AC_CHECK_LIB(Xmu, XmuConvertStandardSelection)
  test $ac_cv_lib_Xmu_XmuConvertStandardSelection = no && LIBS="$OLDLIBS"
fi
AC_SUBST(LIBXTR6)

dnl FIXME the logic here seems weird, but this is what cpp was doing.
dnl Why not just test for libxmu in the normal way?
LIBXMU=-lXmu
case $opsys in
  ## These systems don't supply Xmu.
  hpux* | aix4-2 )
    test "X$ac_cv_lib_Xmu_XmuConvertStandardSelection" != "Xyes" && LIBXMU=
    ;;
esac
AC_SUBST(LIBXMU)

# On Irix 6.5, at least, we need XShapeQueryExtension from -lXext for Xaw3D.
if test "${HAVE_X11}" = "yes"; then
  if test "${USE_X_TOOLKIT}" != "none"; then
    AC_CHECK_LIB(Xext, XShapeQueryExtension)
  fi
fi

LIBXP=
if test "${USE_X_TOOLKIT}" = "MOTIF"; then
  AC_CACHE_CHECK(for Motif version 2.1, emacs_cv_motif_version_2_1,
  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
    [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
int x = 5;
#else
Motif version prior to 2.1.
#endif]])],
    emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
  if test $emacs_cv_motif_version_2_1 = yes; then
    AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
  else
    AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
    # We put this in CFLAGS temporarily to precede other -I options
    # that might be in CFLAGS temporarily.
    # We put this in CPPFLAGS where it precedes the other -I options.
    OLD_CPPFLAGS=$CPPFLAGS
    OLD_CFLAGS=$CFLAGS
    CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
    CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
      [[int x = 5;]])],
      emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
    if test $emacs_cv_lesstif = yes; then
      # Make sure this -I option remains in CPPFLAGS after it is set
      # back to REAL_CPPFLAGS.
      # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
      # have those other -I options anyway.  Ultimately, having this
      # directory ultimately in CPPFLAGS will be enough.
      REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
      LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
    else
      CFLAGS=$OLD_CFLAGS
      CPPFLAGS=$OLD_CPPFLAGS
    fi
  fi
fi

dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
dnl using Motif or Xaw3d is available, and unless
dnl --with-toolkit-scroll-bars=no was specified.

AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
	    [Define to 1 if we should use toolkit scroll bars.])dnl
USE_TOOLKIT_SCROLL_BARS=no
if test "${with_toolkit_scroll_bars}" != "no"; then
  if test "${USE_X_TOOLKIT}" != "none"; then
    if test "${USE_X_TOOLKIT}" = "MOTIF"; then
      AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
      HAVE_XAW3D=no
      USE_TOOLKIT_SCROLL_BARS=yes
    elif test "${HAVE_XAW3D}" = "yes"; then
      AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
      USE_TOOLKIT_SCROLL_BARS=yes
    fi
  elif test "${HAVE_GTK}" = "yes"; then
    AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
    USE_TOOLKIT_SCROLL_BARS=yes
  elif test "${HAVE_NS}" = "yes"; then
    AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
    USE_TOOLKIT_SCROLL_BARS=yes
  fi
fi

dnl See if XIM is available.
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
	  #include <X11/Xlib.h>
	  #include <X11/Xresource.h>]],
	 [[XIMProc  callback;]])],
	 [HAVE_XIM=yes
	 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
	 HAVE_XIM=no)

dnl `--with-xim' now controls only the initial value of use_xim at run time.

if test "${with_xim}" != "no"; then
  AC_DEFINE(USE_XIM, 1,
	    [Define to 1 if we should use XIM, if it is available.])
fi


if test "${HAVE_XIM}" != "no"; then
  late_CFLAGS=$CFLAGS
  if test "$GCC" = yes; then
    CFLAGS="$CFLAGS --pedantic-errors"
  fi
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <X11/Xlib.h>
#include <X11/Xresource.h>]],
[[Display *display;
XrmDatabase db;
char *res_name;
char *res_class;
XIMProc  callback;
XPointer *client_data;
#ifndef __GNUC__
/* If we're not using GCC, it's probably not XFree86, and this is
   probably right, but we can't use something like --pedantic-errors.  */
extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
                                           char*, XIMProc, XPointer*);
#endif
(void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
   client_data);]])],
    [emacs_cv_arg6_star=yes])
  AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
         [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
either XPointer or XPointer*.])dnl
  if test "$emacs_cv_arg6_star" = yes; then
    AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
  else
    AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
  fi
  CFLAGS=$late_CFLAGS
fi

### Start of font-backend (under any platform) section.
# (nothing here yet -- this is a placeholder)
### End of font-backend (under any platform) section.

### Start of font-backend (under X11) section.
if test "${HAVE_X11}" = "yes"; then
   PKG_CHECK_MODULES(FONTCONFIG, fontconfig >= 2.2.0, HAVE_FC=yes, HAVE_FC=no)

   ## Use -lXft if available, unless `--with-xft=no'.
   HAVE_XFT=maybe
    if test "${HAVE_FC}" = "no" || test "x${with_x}" = "xno"; then
      with_xft="no";
    fi
    if test "x${with_xft}" != "xno"; then

      PKG_CHECK_MODULES(XFT, xft >= 0.13.0, , HAVE_XFT=no)
      ## Because xftfont.c uses XRenderQueryExtension, we also
      ## need to link to -lXrender.
      HAVE_XRENDER=no
      AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
      if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
	OLD_CPPFLAGS="$CPPFLAGS"
	OLD_CFLAGS="$CFLAGS"
	OLD_LIBS="$LIBS"
	CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
	CFLAGS="$CFLAGS $XFT_CFLAGS"
	XFT_LIBS="-lXrender $XFT_LIBS"
	LIBS="$XFT_LIBS $LIBS"
	AC_CHECK_HEADER(X11/Xft/Xft.h,
	  AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS))

	if test "${HAVE_XFT}" = "yes"; then
	  AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
	    AC_SUBST(XFT_LIBS)
	  C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
	else
	  CPPFLAGS="$OLD_CPPFLAGS"
	  CFLAGS="$OLD_CFLAGS"
	  LIBS="$OLD_LIBS"
	fi                        # "${HAVE_XFT}" = "yes"
      fi                          # "$HAVE_XFT" != no
    fi                            # "x${with_xft}" != "xno"

    ## We used to allow building with FreeType and without Xft.
    ## However, the ftx font backend driver is not in good shape.
    if test "$HAVE_XFT" != "yes"; then
       dnl For the "Does Emacs use" message at the end.
       HAVE_XFT=no
       HAVE_FREETYPE=no
    else
       dnl Strict linkers fail with
       dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
       dnl if -lfreetype is not specified.
       dnl The following is needed to set FREETYPE_LIBS.
       PKG_CHECK_MODULES(FREETYPE, freetype2, HAVE_FREETYPE=yes,
			 HAVE_FREETYPE=no)

       test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
    fi

    HAVE_LIBOTF=no
    if test "${HAVE_FREETYPE}" = "yes"; then
      AC_DEFINE(HAVE_FREETYPE, 1,
		[Define to 1 if using the freetype and fontconfig libraries.])
      if test "${with_libotf}" != "no"; then
	PKG_CHECK_MODULES(LIBOTF, libotf, HAVE_LIBOTF=yes,
			  HAVE_LIBOTF=no)
	if test "$HAVE_LIBOTF" = "yes"; then
	  AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
	  AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
		       HAVE_OTF_GET_VARIATION_GLYPHS=yes,
		       HAVE_OTF_GET_VARIATION_GLYPHS=no)
	  if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
	    AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
		      [Define to 1 if libotf has OTF_get_variation_glyphs.])
	  fi
	fi
      fi
    dnl FIXME should there be an error if HAVE_FREETYPE != yes?
    dnl Does the new font backend require it, or can it work without it?
    fi

    HAVE_M17N_FLT=no
    if test "${HAVE_LIBOTF}" = yes; then
      if test "${with_m17n_flt}" != "no"; then
	PKG_CHECK_MODULES(M17N_FLT, m17n-flt, HAVE_M17N_FLT=yes, HAVE_M17N_FLT=no)
	if test "$HAVE_M17N_FLT" = "yes"; then
	  AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
	fi
      fi
    fi
else
    HAVE_XFT=no
    HAVE_FREETYPE=no
    HAVE_LIBOTF=no
    HAVE_M17N_FLT=no
fi

### End of font-backend (under X11) section.

AC_SUBST(FREETYPE_CFLAGS)
AC_SUBST(FREETYPE_LIBS)
AC_SUBST(FONTCONFIG_CFLAGS)
AC_SUBST(FONTCONFIG_LIBS)
AC_SUBST(LIBOTF_CFLAGS)
AC_SUBST(LIBOTF_LIBS)
AC_SUBST(M17N_FLT_CFLAGS)
AC_SUBST(M17N_FLT_LIBS)

### Use -lXpm if available, unless `--with-xpm=no'.
HAVE_XPM=no
LIBXPM=
if test "${HAVE_X11}" = "yes"; then
  if test "${with_xpm}" != "no"; then
    AC_CHECK_HEADER(X11/xpm.h,
      [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
    if test "${HAVE_XPM}" = "yes"; then
      AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
      AC_EGREP_CPP(no_return_alloc_pixels,
      [#include "X11/xpm.h"
#ifndef XpmReturnAllocPixels
no_return_alloc_pixels
#endif
      ], HAVE_XPM=no, HAVE_XPM=yes)

      if test "${HAVE_XPM}" = "yes"; then
	AC_MSG_RESULT(yes)
      else
	AC_MSG_RESULT(no)
      fi
    fi
  fi

  if test "${HAVE_XPM}" = "yes"; then
    AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm libary (-lXpm).])
    LIBXPM=-lXpm
  fi
fi
AC_SUBST(LIBXPM)

### Use -ljpeg if available, unless `--with-jpeg=no'.
HAVE_JPEG=no
LIBJPEG=
if test "${HAVE_X11}" = "yes"; then
  if test "${with_jpeg}" != "no"; then
    dnl Checking for jpeglib.h can lose because of a redefinition of
    dnl  HAVE_STDLIB_H.
    AC_CHECK_HEADER(jerror.h,
      [AC_CHECK_LIB(jpeg, jpeg_destroy_compress, HAVE_JPEG=yes)])
  fi

  AH_TEMPLATE(HAVE_JPEG, [Define to 1 if you have the jpeg library (-ljpeg).])dnl
  if test "${HAVE_JPEG}" = "yes"; then
    AC_DEFINE(HAVE_JPEG)
    AC_EGREP_CPP([version= *(6[2-9]|[7-9][0-9])],
        [#include <jpeglib.h>
	 version=JPEG_LIB_VERSION
],
        [AC_DEFINE(HAVE_JPEG)],
        [AC_MSG_WARN([libjpeg found, but not version 6b or later])
        HAVE_JPEG=no])
  fi
  if test "${HAVE_JPEG}" = "yes"; then
    LIBJPEG=-ljpeg
  fi
fi
AC_SUBST(LIBJPEG)

### Use -lpng if available, unless `--with-png=no'.
HAVE_PNG=no
LIBPNG=
if test "${HAVE_X11}" = "yes"; then
  if test "${with_png}" != "no"; then
    # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
    # in /usr/include/libpng.
    AC_CHECK_HEADERS(png.h libpng/png.h)
    if test "$ac_cv_header_png_h" = yes || test "$ac_cv_header_libpng_png_h" = yes ; then
      AC_CHECK_LIB(png, png_get_channels, HAVE_PNG=yes, , -lz -lm)
    fi
  fi

  if test "${HAVE_PNG}" = "yes"; then
    AC_DEFINE(HAVE_PNG, 1, [Define to 1 if you have the png library (-lpng).])
    LIBPNG="-lpng -lz -lm"
  fi
fi
AC_SUBST(LIBPNG)

### Use -ltiff if available, unless `--with-tiff=no'.
HAVE_TIFF=no
LIBTIFF=
if test "${HAVE_X11}" = "yes"; then
  if test "${with_tiff}" != "no"; then
    AC_CHECK_HEADER(tiffio.h,
      [tifflibs="-lz -lm"
      # At least one tiff package requires the jpeg library.
      if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
      AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
  fi

  if test "${HAVE_TIFF}" = "yes"; then
    AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
    dnl FIXME -lz -lm, as per libpng?
    LIBTIFF=-ltiff
  fi
fi
AC_SUBST(LIBTIFF)

### Use -lgif or -lungif if available, unless `--with-gif=no'.
HAVE_GIF=no
LIBGIF=
if test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no"; then
  AC_CHECK_HEADER(gif_lib.h,
# EGifPutExtensionLast only exists from version libungif-4.1.0b1.
# Earlier versions can crash Emacs.
    [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])

  if test "$HAVE_GIF" = yes; then
    LIBGIF=-lgif
  elif test "$HAVE_GIF" = maybe; then
# If gif_lib.h but no libgif, try libungif.
    AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
    test "$HAVE_GIF" = yes && LIBGIF=-lungif
  fi

  if test "${HAVE_GIF}" = "yes"; then
    AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
  fi
fi
AC_SUBST(LIBGIF)

dnl Check for required libraries.
if test "${HAVE_X11}" = "yes"; then
  MISSING=""
  WITH_NO=""
  test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
    MISSING="libXpm" && WITH_NO="--with-xpm=no"
  test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
    MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
  test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
    MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
  test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
    MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
  test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
    MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"

  if test "X${MISSING}" != X; then
    AC_MSG_ERROR([The following required libraries were not found:
    $MISSING
Maybe some development libraries/packages are missing?
If you don't want to link with them give
    $WITH_NO
as options to configure])
  fi
fi

### Use -lgpm if available, unless `--with-gpm=no'.
HAVE_GPM=no
LIBGPM=
if test "${with_gpm}" != "no"; then
  AC_CHECK_HEADER(gpm.h,
    [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])

  if test "${HAVE_GPM}" = "yes"; then
    AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
    LIBGPM=-lgpm
  fi
fi
AC_SUBST(LIBGPM)

dnl Check for malloc/malloc.h on darwin
AC_CHECK_HEADER(malloc/malloc.h, [AC_DEFINE(HAVE_MALLOC_MALLOC_H, 1, [Define to 1 if you have the <malloc/malloc.h> header file.])])

C_SWITCH_X_SYSTEM=
### Use NeXTstep API to implement GUI.
if test "${HAVE_NS}" = "yes"; then
  AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on Mac OS X.])
  if test "${NS_IMPL_COCOA}" = "yes"; then
    AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under MacOS X.])
    GNU_OBJC_CFLAGS=
  fi
  if test "${NS_IMPL_GNUSTEP}" = "yes"; then
    AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
    # See also .m.o rule in Makefile.in */
    # FIXME: are all these flags really needed?  Document here why.  */
    C_SWITCH_X_SYSTEM="-D_REENTRANT -fPIC -fno-strict-aliasing"
    GNU_OBJC_CFLAGS="-fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
  fi
  if test "${NS_HAVE_NSINTEGER}" = "yes"; then
    AC_DEFINE(NS_HAVE_NSINTEGER, 1, [Define to 1 if `NSInteger' is defined.])
  fi
  # We also have mouse menus.
  HAVE_MENUS=yes
  OTHER_FILES=ns-app
fi


### Use session management (-lSM -lICE) if available
HAVE_X_SM=no
LIBXSM=
if test "${HAVE_X11}" = "yes"; then
  AC_CHECK_HEADER(X11/SM/SMlib.h,
    [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])

  if test "${HAVE_X_SM}" = "yes"; then
    AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
    LIBXSM="-lSM -lICE"
    case "$LIBS" in
      *-lSM*) ;;
      *)      LIBS="$LIBXSM $LIBS" ;;
    esac
  fi
fi
AC_SUBST(LIBXSM)

### Use libxml (-lxml2) if available
if test "${with_xml2}" != "no"; then
  ### I'm not sure what the version number should be, so I just guessed.
  PKG_CHECK_MODULES(LIBXML2, libxml-2.0 > 2.6.17, HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
  if test "${HAVE_LIBXML2}" = "yes"; then
    LIBS="$LIBXML2_LIBS $LIBS"
    AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
    if test "${HAVE_LIBXML2}" = "yes"; then
      AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
    else
      LIBXML2_LIBS=""
      LIBXML2_CFLAGS=""
    fi
  fi
fi
AC_SUBST(LIBXML2_LIBS)
AC_SUBST(LIBXML2_CFLAGS)

# If netdb.h doesn't declare h_errno, we must declare it by hand.
AC_CACHE_CHECK(whether netdb declares h_errno,
	       emacs_cv_netdb_declares_h_errno,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
  [[return h_errno;]])],
  emacs_cv_netdb_declares_h_errno=yes, emacs_cv_netdb_declares_h_errno=no)])
if test $emacs_cv_netdb_declares_h_errno = yes; then
  AC_DEFINE(HAVE_H_ERRNO, 1, [Define to 1 if netdb.h declares h_errno.])
fi

# fmod, logb, and frexp are found in -lm on most systems.
# On HPUX 9.01, -lm does not contain logb, so check for sqrt.
AC_CHECK_LIB(m, sqrt)

# Check for mail-locking functions in a "mail" library.  Probably this should
# have the same check as for liblockfile below.
AC_CHECK_LIB(mail, maillock, have_mail=yes, have_mail=no)
if test $have_mail = yes; then
  LIBS_MAIL=-lmail
  LIBS="$LIBS_MAIL $LIBS"
  AC_DEFINE(HAVE_LIBMAIL, 1, [Define to 1 if you have the `mail' library (-lmail).])
else
  LIBS_MAIL=
fi
dnl Debian, at least:
AC_CHECK_LIB(lockfile, maillock, have_lockfile=yes, have_lockfile=no)
if test $have_lockfile = yes; then
   LIBS_MAIL=-llockfile
   LIBS="$LIBS_MAIL $LIBS"
   AC_DEFINE(HAVE_LIBLOCKFILE, 1, [Define to 1 if you have the `lockfile' library (-llockfile).])
else
# If we have the shared liblockfile, assume we must use it for mail
# locking (e.g. Debian).  If we couldn't link against liblockfile
# (no liblockfile.a installed), ensure that we don't need to.
  dnl This works for files generally, not just executables.
  dnl Should we look elsewhere for it?  Maybe examine /etc/ld.so.conf?
  AC_CHECK_PROG(liblockfile, liblockfile.so, yes, no,
                /usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH)
  if test $ac_cv_prog_liblockfile = yes; then
    AC_MSG_ERROR([Shared liblockfile found but can't link against it.
This probably means that movemail could lose mail.
There may be a `development' package to install containing liblockfile.])
  fi
fi
AC_CHECK_FUNCS(touchlock)
AC_CHECK_HEADERS(maillock.h)
AC_SUBST(LIBS_MAIL)

## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
## interlock access to the mail spool.  The alternative is a lock file named
## /usr/spool/mail/$USER.lock.
mail_lock=no
case "$opsys" in
  aix4-2) mail_lock="lockf" ;;

  gnu|freebsd|netbsd|openbsd|darwin|irix6-5) mail_lock="flock" ;;

  ## On GNU/Linux systems, both methods are used by various mail programs.
  ## I assume most people are using newer mailers that have heard of flock.
  ## Change this if you need to.
  ## Debian contains a patch which says: ``On Debian/GNU/Linux systems,
  ## configure gets the right answers, and that means *NOT* using flock.
  ## Using flock is guaranteed to be the wrong thing. See Debian Policy
  ## for details.'' and then uses `#ifdef DEBIAN'.  Unfortunately the
  ## Debian maintainer hasn't provided a clean fix for Emacs.
  ## movemail.c will use `maillock' when MAILDIR, HAVE_LIBMAIL and
  ## HAVE_MAILLOCK_H are defined, so the following appears to be the
  ## correct logic.  -- fx
  ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
  ## liblockfile is a Free Software replacement for libmail, used on
  ## Debian systems and elsewhere. -rfr.
  gnu-*)
    mail_lock="flock"
    if test $have_mail = yes || test $have_lockfile = yes; then
      test $ac_cv_header_maillock_h = yes && mail_lock=no
    fi
    ;;
esac

BLESSMAIL_TARGET=
case "$mail_lock" in
  flock) AC_DEFINE(MAIL_USE_FLOCK, 1, [Define if the mailer uses flock to interlock the mail spool.]) ;;

  lockf) AC_DEFINE(MAIL_USE_LOCKF, 1, [Define if the mailer uses lockf to interlock the mail spool.]) ;;

  *) BLESSMAIL_TARGET="need-blessmail" ;;
esac
AC_SUBST(BLESSMAIL_TARGET)


AC_CHECK_FUNCS(gethostname getdomainname \
rename closedir mkdir rmdir sysinfo getrusage get_current_dir_name \
random lrand48 logb frexp fmod rint cbrt ftime setsid \
strerror fpathconf select euidaccess getpagesize tzset setlocale \
utimes getrlimit setrlimit setpgid getcwd getwd shutdown getaddrinfo \
__fpending mblen mbrlen mbsinit strsignal setitimer ualarm strchr strrchr \
sendto recvfrom getsockopt setsockopt getsockname getpeername \
gai_strerror mkstemp getline getdelim mremap memmove fsync sync \
memset memcmp difftime memcpy mempcpy mblen mbrlen posix_memalign \
cfmakeraw cfsetspeed isnan copysign __executable_start)

dnl Cannot use AC_CHECK_FUNCS
AC_CACHE_CHECK([for __builtin_unwind_init],
	       emacs_cv_func___builtin_unwind_init,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
		emacs_cv_func___builtin_unwind_init=yes,
		emacs_cv_func___builtin_unwind_init=no)])
if test $emacs_cv_func___builtin_unwind_init = yes; then
  AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
	    [Define to 1 if you have the `__builtin_unwind_init' function.])
fi

AC_CHECK_HEADERS(sys/un.h)

AC_FUNC_FSEEKO

AC_FUNC_GETPGRP

# Configure gnulib.
gl_ASSERT_NO_GNULIB_POSIXCHECK
gl_ASSERT_NO_GNULIB_TESTS
gl_INIT

# UNIX98 PTYs.
AC_CHECK_FUNCS(grantpt)

# PTY-related GNU extensions.
AC_CHECK_FUNCS(getpt)

# Check this now, so that we will NOT find the above functions in ncurses.
# That is because we have not set up to link ncurses in lib-src.
# It's better to believe a function is not available
# than to expect to find it in ncurses.
# Also we need tputs and friends to be able to build at all.
have_tputs_et_al=true
AC_SEARCH_LIBS(tputs, [ncurses terminfo termcap], , have_tputs_et_al=false)
if test "$have_tputs_et_al" != true; then
  AC_MSG_ERROR([I couldn't find termcap functions (tputs and friends).
Maybe some development libraries/packages are missing?  Try installing
libncurses-dev(el), libterminfo-dev(el) or similar.])
fi
# Must define this when any termcap library is found.
AC_DEFINE(HAVE_LIBNCURSES, 1,
          [Define to 1 if you have the `ncurses' library (-lncurses).])
## FIXME This was the cpp logic, but I am not sure it is right.
## The above test has not necessarily found libncurses.
HAVE_LIBNCURSES=yes

## Use terminfo instead of termcap?
## Note only system files NOT using terminfo are:
## freebsd < 40000, ms-w32, msdos, netbsd < 599002500, and
## darwin|gnu without ncurses.
TERMINFO=no
LIBS_TERMCAP=
case "$opsys" in
  ## cygwin: Fewer environment variables to go wrong, more terminal types.
  ## hpux10-20: Use the system provided termcap(3) library.
  ## openbsd: David Mazieres <dm@reeducation-labor.lcs.mit.edu> says this
  ##  is necessary.  Otherwise Emacs dumps core when run -nw.
  aix4-2|cygwin|hpux*|irix6-5|openbsd|sol2*|unixware) TERMINFO=yes ;;

  ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
  ##  The ncurses library has been moved out of the System framework in
  ##  Mac OS X 10.2.  So if configure detects it, set the command-line
  ##  option to use it.
  darwin|gnu*)
    ## (HAVE_LIBNCURSES was not always true, but is since 2010-03-18.)
    if test "x$HAVE_LIBNCURSES" = "xyes"; then
      TERMINFO=yes
      LIBS_TERMCAP="-lncurses"
    fi
    ;;

  freebsd)
    AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
    AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
[[#if __FreeBSD_version < 400000
fail;
#endif
]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])

    AC_MSG_RESULT($emacs_cv_freebsd_terminfo)

    if test $emacs_cv_freebsd_terminfo = yes; then
      TERMINFO=yes
      LIBS_TERMCAP="-lncurses"
    else
      LIBS_TERMCAP="-ltermcap"
    fi
    ;;

  netbsd)
    if test $ac_cv_search_tputs = -lterminfo; then
      TERMINFO=yes
      LIBS_TERMCAP="-lterminfo"
    else
      LIBS_TERMCAP="-ltermcap"
    fi
    ;;

esac

case "$opsys" in
  ## hpux: Make sure we get select from libc rather than from libcurses
  ##  because libcurses on HPUX 10.10 has a broken version of select.
  ##  We used to use -lc -lcurses, but this may be cleaner.
  hpux*) LIBS_TERMCAP="-ltermcap" ;;

  openbsd) LIBS_TERMCAP="-lncurses" ;;

  ## Must use system termcap, if we use any termcap.  It does special things.
  sol2*) test "$TERMINFO" != yes && LIBS_TERMCAP="-ltermcap" ;;
esac

TERMCAP_OBJ=tparam.o
if test $TERMINFO = yes; then
  AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])

  ## Default used to be -ltermcap.  Add a case above if need something else.
  test "x$LIBS_TERMCAP" = "x" && LIBS_TERMCAP="-lcurses"

  TERMCAP_OBJ=terminfo.o
fi
AC_SUBST(LIBS_TERMCAP)
AC_SUBST(TERMCAP_OBJ)


# Do we have res_init, for detecting changes in /etc/resolv.conf?
resolv=no
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>]],
    [[return res_init();]])],
    have_res_init=yes, have_res_init=no)
if test "$have_res_init" = no; then
  OLIBS="$LIBS"
  LIBS="$LIBS -lresolv"
  AC_MSG_CHECKING(for res_init with -lresolv)
  AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>]],
    [[return res_init();]])],
    have_res_init=yes, have_res_init=no)
  AC_MSG_RESULT($have_res_init)
  if test "$have_res_init" = yes ; then
    resolv=yes
  fi
  LIBS="$OLIBS"
fi

if test "$have_res_init" = yes; then
  AC_DEFINE(HAVE_RES_INIT, 1, [Define to 1 if res_init is available.])
fi

# Do we need the Hesiod library to provide the support routines?
LIBHESIOD=
if test "$with_hesiod" != no ; then
  # Don't set $LIBS here -- see comments above.  FIXME which comments?
  AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
     [AC_CHECK_LIB(resolv, res_send, resolv=yes,
		  [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
  if test "$resolv" = yes ; then
    RESOLVLIB=-lresolv
  else
    RESOLVLIB=
  fi
  AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
	hesiod=yes, :, $RESOLVLIB)])

  if test x"$hesiod" = xyes; then
    AC_DEFINE(HAVE_LIBHESIOD, 1,
              [Define to 1 if you have the hesiod library (-lhesiod).])
    LIBHESIOD=-lhesiod
  fi
fi
AC_SUBST(LIBHESIOD)

# Do we need libresolv (due to res_init or Hesiod)?
if test "$resolv" = yes ; then
  AC_DEFINE(HAVE_LIBRESOLV, 1,
            [Define to 1 if you have the resolv library (-lresolv).])
  LIBRESOLV=-lresolv
else
  LIBRESOLV=
fi
AC_SUBST(LIBRESOLV)

# These tell us which Kerberos-related libraries to use.
COM_ERRLIB=
CRYPTOLIB=
KRB5LIB=
DESLIB=
KRB4LIB=

if test "${with_kerberos}" != no; then
  AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
  if test $have_com_err = yes; then
    COM_ERRLIB=-lcom_err
    LIBS="$COM_ERRLIB $LIBS"
    AC_DEFINE(HAVE_LIBCOM_ERR, 1, [Define to 1 if you have the `com_err' library (-lcom_err).])
  fi
  AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
  if test $have_crypto = yes; then
    CRYPTOLIB=-lcrypto
    LIBS="$CRYPTOLIB $LIBS"
    AC_DEFINE(HAVE_LIBCRYPTO, 1, [Define to 1 if you have the `crypto' library (-lcrypto).])
  fi
  AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
  if test $have_k5crypto = yes; then
    CRYPTOLIB=-lk5crypto
    LIBS="$CRYPTOLIB $LIBS"
    AC_DEFINE(HAVE_LIBK5CRYPTO, 1, [Define to 1 if you have the `k5crypto' library (-lk5crypto).])
  fi
  AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
  if test $have_krb5=yes; then
    KRB5LIB=-lkrb5
    LIBS="$KRB5LIB $LIBS"
    AC_DEFINE(HAVE_LIBKRB5, 1, [Define to 1 if you have the `krb5' library (-lkrb5).])
  fi
  dnl FIXME Simplify.  Does not match 22 logic, thanks to default_off?
  if test "${with_kerberos5}" = no; then
    AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
    if test $have_des425 = yes; then
      DESLIB=-ldes425
      LIBS="$DESLIB $LIBS"
      AC_DEFINE(HAVE_LIBDES425, 1, [Define to 1 if you have the `des425' library (-ldes425).])
    else
      AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
      if test $have_des = yes; then
        DESLIB=-ldes
        LIBS="$DESLIB $LIBS"
        AC_DEFINE(HAVE_LIBDES, 1, [Define to 1 if you have the `des' library (-ldes).])
      fi
    fi
    AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
    if test $have_krb4 = yes; then
      KRB4LIB=-lkrb4
      LIBS="$KRB4LIB $LIBS"
      AC_DEFINE(HAVE_LIBKRB4, 1, [Define to 1 if you have the `krb4' library (-lkrb4).])
    else
      AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
      if test $have_krb = yes; then
        KRB4LIB=-lkrb
        LIBS="$KRB4LIB $LIBS"
        AC_DEFINE(HAVE_LIBKRB, 1, [Define to 1 if you have the `krb' library (-lkrb).])
      fi
    fi
  fi

  if test "${with_kerberos5}" != no; then
    AC_CHECK_HEADERS(krb5.h,
      [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
		        [#include <krb5.h>])])
  else
    AC_CHECK_HEADERS(des.h,,
		     [AC_CHECK_HEADERS(kerberosIV/des.h,,
				       [AC_CHECK_HEADERS(kerberos/des.h)])])
    AC_CHECK_HEADERS(krb.h,,
		     [AC_CHECK_HEADERS(kerberosIV/krb.h,,
				       [AC_CHECK_HEADERS(kerberos/krb.h)])])
  fi
  AC_CHECK_HEADERS(com_err.h)
fi

AC_SUBST(COM_ERRLIB)
AC_SUBST(CRYPTOLIB)
AC_SUBST(KRB5LIB)
AC_SUBST(DESLIB)
AC_SUBST(KRB4LIB)

# Solaris requires -lintl if you want strerror (which calls dgettext)
# to return localized messages.
AC_CHECK_LIB(intl, dgettext)

AC_MSG_CHECKING(whether localtime caches TZ)
AC_CACHE_VAL(emacs_cv_localtime_cache,
[if test x$ac_cv_func_tzset = xyes; then
AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <time.h>
char TZ_GMT0[] = "TZ=GMT0";
char TZ_PST8[] = "TZ=PST8";
main()
{
  time_t now = time ((time_t *) 0);
  int hour_GMT0, hour_unset;
  if (putenv (TZ_GMT0) != 0)
    exit (1);
  hour_GMT0 = localtime (&now)->tm_hour;
  unsetenv("TZ");
  hour_unset = localtime (&now)->tm_hour;
  if (putenv (TZ_PST8) != 0)
    exit (1);
  if (localtime (&now)->tm_hour == hour_GMT0)
    exit (1);
  unsetenv("TZ");
  if (localtime (&now)->tm_hour != hour_unset)
    exit (1);
  exit (0);
}]])], emacs_cv_localtime_cache=no, emacs_cv_localtime_cache=yes,
[# If we have tzset, assume the worst when cross-compiling.
emacs_cv_localtime_cache=yes])
else
	# If we lack tzset, report that localtime does not cache TZ,
	# since we can't invalidate the cache if we don't have tzset.
	emacs_cv_localtime_cache=no
fi])dnl
AC_MSG_RESULT($emacs_cv_localtime_cache)
if test $emacs_cv_localtime_cache = yes; then
  AC_DEFINE(LOCALTIME_CACHE, 1,
	    [Define to 1 if localtime caches TZ.])
fi

if test "x$HAVE_TIMEVAL" = xyes; then
  AC_CHECK_FUNCS(gettimeofday)
  if test $ac_cv_func_gettimeofday = yes; then
    AC_CACHE_CHECK(whether gettimeofday can accept two arguments,
		   emacs_cv_gettimeofday_two_arguments,
    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif]],
      [[struct timeval time;
       gettimeofday (&time, 0);]])],
      emacs_cv_gettimeofday_two_arguments=yes,
      emacs_cv_gettimeofday_two_arguments=no)])
    if test $emacs_cv_gettimeofday_two_arguments = no; then
      AC_DEFINE(GETTIMEOFDAY_ONE_ARGUMENT, 1,
		[Define to 1 if gettimeofday accepts only one argument.])
    fi
  fi
fi

ok_so_far=yes
AC_CHECK_FUNC(socket, , ok_so_far=no)
if test $ok_so_far = yes; then
  AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
fi
if test $ok_so_far = yes; then
  AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
fi
if test $ok_so_far = yes; then
dnl Fixme: Not used.  Should this be HAVE_SOCKETS?
  AC_DEFINE(HAVE_INET_SOCKETS, 1,
	    [Define to 1 if you have inet sockets.])
fi

if test -f /usr/lpp/X11/bin/smt.exp; then
  AC_DEFINE(HAVE_AIX_SMT_EXP, 1,
	    [Define to 1 if the file /usr/lpp/X11/bin/smt.exp exists.])
fi

AC_MSG_CHECKING(whether system supports dynamic ptys)
if test -d /dev/pts && ls -d /dev/ptmx > /dev/null 2>&1 ; then
  AC_MSG_RESULT(yes)
  AC_DEFINE(HAVE_DEV_PTMX, 1, [Define to 1 if dynamic ptys are supported.])
else
  AC_MSG_RESULT(no)
fi

AC_FUNC_FORK

dnl Adapted from Haible's version.
AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
  [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
    [[char* cs = nl_langinfo(CODESET);]])],
    emacs_cv_langinfo_codeset=yes,
    emacs_cv_langinfo_codeset=no)
  ])
if test $emacs_cv_langinfo_codeset = yes; then
  AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
    [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
fi

AC_TYPE_MBSTATE_T

AC_CACHE_CHECK([for C restricted array declarations], emacs_cv_c_restrict_arr,
  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[void fred (int x[__restrict]);]], [[]])],
                  emacs_cv_c_restrict_arr=yes, emacs_cv_c_restrict_arr=no)])
if test "$emacs_cv_c_restrict_arr" = yes; then
  AC_DEFINE(__restrict_arr, __restrict,
    [Define to compiler's equivalent of C99 restrict keyword in array
     declarations.  Define as empty for no equivalent.])
fi

dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
dnl how the tty code is related to POSIX and/or other versions of termios.
dnl The following looks like a useful start.
dnl
dnl AC_SYS_POSIX_TERMIOS
dnl if test $ac_cv_sys_posix_termios = yes; then
dnl    AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
dnl                                and macros for terminal control.])
dnl    AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
dnl fi

dnl Fixme: Use AC_FUNC_MEMCMP since memcmp is used.  (Needs libobj replacement.)

# Set up the CFLAGS for real compilation, so we can substitute it.
CFLAGS="$REAL_CFLAGS"
CPPFLAGS="$REAL_CPPFLAGS"

## Hack to detect a buggy GCC version.
if test "x$GCC" = xyes \
   && test x"`$CC --version 2> /dev/null | grep 'gcc.* 4.5.0'`" != x \
   && test x"`echo $CFLAGS | grep '\-O@<:@23@:>@'`" != x \
   && test x"`echo $CFLAGS | grep '\-fno-optimize-sibling-calls'`" = x; then
   AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS'.])
fi

version=$PACKAGE_VERSION

### Specify what sort of things we'll be editing into Makefile and config.h.
### Use configuration here uncanonicalized to avoid exceeding size limits.
AC_SUBST(version)
AC_SUBST(configuration)
## Unused?
AC_SUBST(canonical)
AC_SUBST(srcdir)
AC_SUBST(prefix)
AC_SUBST(exec_prefix)
AC_SUBST(bindir)
AC_SUBST(datadir)
AC_SUBST(sharedstatedir)
AC_SUBST(libexecdir)
AC_SUBST(mandir)
AC_SUBST(infodir)
AC_SUBST(lispdir)
AC_SUBST(locallisppath)
AC_SUBST(lisppath)
AC_SUBST(x_default_search_path)
AC_SUBST(etcdir)
AC_SUBST(archlibdir)
AC_SUBST(docdir)
AC_SUBST(bitmapdir)
AC_SUBST(gamedir)
AC_SUBST(gameuser)
## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
## end of LIBX_BASE, but nothing ever set it.
AC_SUBST(LD_SWITCH_X_SITE)
AC_SUBST(C_SWITCH_X_SITE)
AC_SUBST(C_SWITCH_X_SYSTEM)
AC_SUBST(CFLAGS)
## Used in lwlib/Makefile.in.
AC_SUBST(X_TOOLKIT_TYPE)
if test -n "${machfile}"; then
  M_FILE="\$(srcdir)/${machfile}"
else
  M_FILE=
fi
S_FILE="\$(srcdir)/${opsysfile}"
AC_SUBST(M_FILE)
AC_SUBST(S_FILE)
AC_SUBST(ns_appdir)
AC_SUBST(ns_appbindir)
AC_SUBST(ns_appresdir)
AC_SUBST(ns_appsrc)
AC_SUBST(GNU_OBJC_CFLAGS)
AC_SUBST(OTHER_FILES)

AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION,  "${canonical}",
		   [Define to the canonical Emacs configuration name.])
AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${ac_configure_args}",
		   [Define to the options passed to configure.])
if test -n "$machfile"; then
  AC_DEFINE_UNQUOTED(config_machfile,  "${machfile}",
		     [Define to the used machine dependent file.])
fi
AC_DEFINE_UNQUOTED(config_opsysfile, "${opsysfile}",
		   [Define to the used os dependent file.])

XMENU_OBJ=
XOBJ=
FONT_OBJ=
if test "${HAVE_X_WINDOWS}" = "yes" ; then
  AC_DEFINE(HAVE_X_WINDOWS, 1,
	    [Define to 1 if you want to use the X window system.])
  XMENU_OBJ=xmenu.o
  XOBJ="xterm.o xfns.o xselect.o xrdb.o fontset.o xsmfns.o fringe.o image.o xsettings.o xgselect.o"
  FONT_OBJ=xfont.o
  if test "$HAVE_XFT" = "yes"; then
    FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
  elif test "$HAVE_FREETYPE" = "yes"; then
    FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
  fi
  AC_SUBST(FONT_OBJ)
fi
AC_SUBST(XMENU_OBJ)
AC_SUBST(XOBJ)
AC_SUBST(FONT_OBJ)

WIDGET_OBJ=
MOTIF_LIBW=
if test "${USE_X_TOOLKIT}" != "none" ; then
  WIDGET_OBJ=widget.o
  AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
  if test "${USE_X_TOOLKIT}" = "LUCID"; then
    AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
  elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
    AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
    MOTIF_LIBW=-lXm
    case "$opsys" in
      gnu-linux)
        ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
        MOTIF_LIBW="$MOTIF_LIBW -lXpm"
        ;;

      unixware)
        ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
        ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
        MOTIF_LIBW="MOTIF_LIBW -lXimp"
        ;;

      aix4-2)
        ## olson@mcs.anl.gov says -li18n is needed by -lXm.
        MOTIF_LIBW="$MOTIF_LIBW -li18n"
        ;;
    esac
    MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
  fi
fi
AC_SUBST(WIDGET_OBJ)

TOOLKIT_LIBW=
case "$USE_X_TOOLKIT" in
  MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
  LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
  none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
esac
AC_SUBST(TOOLKIT_LIBW)

if test "$USE_X_TOOLKIT" = "none"; then
  LIBXT_OTHER="\$(LIBXSM)"
  OLDXMENU_TARGET="really-oldXMenu"
else
  LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
  OLDXMENU_TARGET="really-lwlib"
fi
AC_SUBST(LIBXT_OTHER)

## The X Menu stuff is present in the X10 distribution, but missing
## from X11.  If we have X10, just use the installed library;
## otherwise, use our own copy.
if test "${HAVE_X11}" = "yes" ; then
  AC_DEFINE(HAVE_X11, 1,
	    [Define to 1 if you want to use version 11 of X windows.
	     Otherwise, Emacs expects to use version 10.])

  if test "$USE_X_TOOLKIT" = "none"; then
    OLDXMENU="\${oldXMenudir}/libXMenu11.a"
  else
    OLDXMENU="\${lwlibdir}/liblw.a"
  fi
  LIBXMENU="\$(OLDXMENU)"
  LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
  OLDXMENU_DEPS="\${OLDXMENU} ../src/\${OLDXMENU}"
else
  ## For a syntactically valid Makefile; not actually used for anything.
  ## See comments in src/Makefile.in.
  OLDXMENU=nothing
  ## FIXME This case (!HAVE_X11 && HAVE_X_WINDOWS) is no longer possible(?).
  if test "${HAVE_X_WINDOWS}" = "yes"; then
    LIBXMENU="-lXMenu"
  else
    LIBXMENU=
  fi
  LIBX_OTHER=
  OLDXMENU_DEPS=
fi

if test "$HAVE_GTK" = "yes" || test "$HAVE_MENUS" != "yes"; then
  OLDXMENU_TARGET=
  OLDXMENU=nothing
  LIBXMENU=
  OLDXMENU_DEPS=
fi

AC_SUBST(OLDXMENU_TARGET)
AC_SUBST(OLDXMENU)
AC_SUBST(LIBXMENU)
AC_SUBST(LIBX_OTHER)
AC_SUBST(OLDXMENU_DEPS)

if test "${HAVE_MENUS}" = "yes" ; then
  AC_DEFINE(HAVE_MENUS, 1,
	    [Define to 1 if you have mouse menus.
	     (This is automatic if you use X, but the option to specify it remains.)
	     It is also defined with other window systems that support xmenu.c.])
fi

if test "${GNU_MALLOC}" = "yes" ; then
  AC_DEFINE(GNU_MALLOC, 1,
	    [Define to 1 if you want to use the GNU memory allocator.])
fi

RALLOC_OBJ=
if test "${REL_ALLOC}" = "yes" ; then
  AC_DEFINE(REL_ALLOC, 1,
	    [Define REL_ALLOC if you want to use the relocating allocator for
	     buffer space.])

  test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
fi
AC_SUBST(RALLOC_OBJ)

if test "$opsys" = "cygwin"; then
  CYGWIN_OBJ="sheap.o"
  ## Cygwin differs because of its unexec().
  PRE_ALLOC_OBJ=
  POST_ALLOC_OBJ=lastfile.o
else
  CYGWIN_OBJ=
  PRE_ALLOC_OBJ=lastfile.o
  POST_ALLOC_OBJ=
fi
AC_SUBST(CYGWIN_OBJ)
AC_SUBST(PRE_ALLOC_OBJ)
AC_SUBST(POST_ALLOC_OBJ)


case "$opsys" in
  aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;

  darwin)
   ## The -headerpad option tells ld (see man page) to leave room at the
   ## end of the header for adding load commands.  Needed for dumping.
   ## 0x690 is the total size of 30 segment load commands (at 56
   ## each); under Cocoa 31 commands are required.
   if test "$HAVE_NS" = "yes"; then
     libs_nsgui="-framework AppKit"
     headerpad_extra=6C8
   else
     libs_nsgui=
     headerpad_extra=690
   fi
   LD_SWITCH_SYSTEM_TEMACS="-prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"

   ## This is here because src/Makefile.in did some extra fiddling around
   ## with LD_SWITCH_SYSTEM.  The cpp logic was:
   ##   #ifndef LD_SWITCH_SYSTEM
   ##   #if !defined (__GNUC__) && ((defined (BSD_SYSTEM) && !defined (COFF)))
   ## Since all the *bsds define LD_SWITCH_SYSTEM, this simplifies to:
   ## not using gcc, darwin system not on an alpha (ie darwin, since
   ## darwin + alpha does not occur).
   ## Because this was done in src/Makefile.in, the resulting part of
   ## LD_SWITCH_SYSTEM was not used in configure (ie, in ac_link).
   ## It therefore seems cleaner to put this in LD_SWITCH_SYSTEM_TEMACS,
   ## rather than LD_SWITCH_SYSTEM.
   test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
     LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
   ;;

  ## LD_SWITCH_X_SITE_AUX is a -R option saying where to find X at run-time.
  ## When handled by cpp, this was in LD_SWITCH_SYSTEM.  However, at
  ## the point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_AUX
  ## had not yet been defined and was expanded to null.  Hence LD_SWITCH_SYSTEM
  ## had different values in configure (in ac_link) and src/Makefile.in.
  ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
  gnu-linux) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_AUX)" ;;

  *) LD_SWITCH_SYSTEM_TEMACS= ;;
esac

if test "$NS_IMPL_GNUSTEP" = "yes"; then
  LD_SWITCH_SYSTEM_TEMACS="${LD_SWITCH_SYSTEM_TEMACS} -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES} -lgnustep-gui -lgnustep-base -lobjc -lpthread"
fi

AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)


LD_FIRSTFLAG=
ORDINARY_LINK=
case "$opsys" in
  ## gnu: GNU needs its own crt0.
  aix4-2|cygwin|darwin|gnu|hpux*|irix6-5|sol2*|unixware) ORDINARY_LINK=yes ;;

  ## On post 1.3 releases of NetBSD, gcc -nostdlib also clears the
  ## library search parth, i.e. it won't search /usr/lib for libc and
  ## friends.  Using -nostartfiles instead avoids this problem, and
  ## will also work on earlier NetBSD releases.
  netbsd|openbsd) LD_FIRSTFLAG="-nostartfiles" ;;

  ## macpcc: NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp> says
  ##   MkLinux/LinuxPPC needs this.
  ## ibms390x only supports opsys = gnu-linux so it can be added here.
  gnu-*)
    case "$machine" in
      macppc|ibms390x) LD_FIRSTFLAG="-nostdlib" ;;
    esac
    ;;
esac


if test "x$ORDINARY_LINK" = "xyes"; then

  LD_FIRSTFLAG=""
  AC_DEFINE(ORDINARY_LINK, 1, [Define if the C compiler is the linker.])

## The system files defining neither ORDINARY_LINK nor LD_FIRSTFLAG are:
## freebsd, gnu-* not on macppc|ibms390x.
elif test "x$GCC" = "xyes" && test "x$LD_FIRSTFLAG" = "x"; then

  ## Versions of GCC >= 2.0 put their library, libgcc.a, in obscure
  ## places that are difficult to figure out at make time.  Fortunately,
  ## these same versions allow you to pass arbitrary flags on to the
  ## linker, so there is no reason not to use it as a linker.
  ##
  ## Well, it is not quite perfect.  The "-nostdlib" keeps GCC from
  ## searching for libraries in its internal directories, so we have to
  ## ask GCC explicitly where to find libgcc.a (LIB_GCC below).
  LD_FIRSTFLAG="-nostdlib"
fi

## FIXME? What setting of EDIT_LDFLAGS should this have?
test "$NS_IMPL_GNUSTEP" = "yes" && LD_FIRSTFLAG="-rdynamic"

AC_SUBST(LD_FIRSTFLAG)


## FIXME? The logic here is not precisely the same as that above.
## There is no check here for a pre-defined LD_FIRSTFLAG.
## Should we only be setting LIB_GCC if LD ~ -nostdlib?
LIB_GCC=
if test "x$GCC" = "xyes" && test "x$ORDINARY_LINK" != "xyes"; then

  case "$opsys" in
    freebsd|netbsd|openbsd) LIB_GCC= ;;

    gnu-*)
      ## armin76@gentoo.org reported that the lgcc_s flag is necessary to
      ## build on ARM EABI under GNU/Linux.  (Bug#5518)
      case $host_cpu in
      arm*)
        LIB_GCC="-lgcc_s"
	;;
      *)
        ## FIXME? s/gnu-linux.h used to define LIB_GCC as below, then
        ## immediately undefine it again and redefine it to empty.
        ## Was the C_SWITCH_X_SITE part really necessary?
##      LIB_GCC=`$CC $C_SWITCH_X_SITE -print-libgcc-file-name`
        LIB_GCC=
	;;
      esac
      ;;

    ## Ask GCC where to find libgcc.a.
    *) LIB_GCC=`$CC -print-libgcc-file-name 2> /dev/null` ;;
  esac
fi                              dnl if $GCC
AC_SUBST(LIB_GCC)


## If we're using X11/GNUstep, define some consequences.
if test "$HAVE_X_WINDOWS" = "yes" || test "$HAVE_NS" = "yes"; then
  AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
  AC_DEFINE(HAVE_MOUSE, 1, [Define if you have mouse support.])
fi


AH_TOP([/* GNU Emacs site configuration template file.

Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2011
  Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */


/* No code in Emacs #includes config.h twice, but some bits of code
   intended to work with other packages as well (like gmalloc.c)
   think they can include it as many times as they like.  */
#ifndef EMACS_CONFIG_H
#define EMACS_CONFIG_H
])dnl

AH_BOTTOM([
/* On AIX 3 this must be included before any other include file.  */
#include <alloca.h>
#if ! HAVE_ALLOCA
# error "alloca not available on this machine"
#endif

/* Define AMPERSAND_FULL_NAME if you use the convention
   that & in the full name stands for the login id.  */
/* Turned on June 1996 supposing nobody will mind it.  */
#define AMPERSAND_FULL_NAME

/* `subprocesses' should be defined if you want to
   have code for asynchronous subprocesses
   (as used in M-x compile and M-x shell).
   Only MSDOS does not support this (it overrides
   this in its config_opsysfile below).  */

#define subprocesses

/* Include the os and machine dependent files.  */
#include config_opsysfile
#ifdef config_machfile
# include config_machfile
#endif

/* GNUstep needs a bit more pure memory.  Of the existing knobs,
   SYSTEM_PURESIZE_EXTRA seems like the least likely to cause problems.
  (There is probably a better place to do this, but right now the
   Cocoa side does this in s/darwin.h and we cannot parallel this
   exactly since GNUstep is multi-OS.  */
#if defined HAVE_NS && defined NS_IMPL_GNUSTEP
#  define SYSTEM_PURESIZE_EXTRA 30000
#endif

#ifdef emacs /* Don't do this for lib-src.  */
/* Tell regex.c to use a type compatible with Emacs.  */
#define RE_TRANSLATE_TYPE Lisp_Object
#define RE_TRANSLATE(TBL, C) CHAR_TABLE_TRANSLATE (TBL, C)
#ifdef make_number
/* If make_number is a macro, use it.  */
#define RE_TRANSLATE_P(TBL) (!EQ (TBL, make_number (0)))
#else
/* If make_number is a function, avoid it.  */
#define RE_TRANSLATE_P(TBL) (!(INTEGERP (TBL) && XINT (TBL) == 0))
#endif
#endif

/* These default definitions are good for almost all machines.
   Any exceptions should override them in m/MACHINE.h.
   They must be usable in preprocessor conditionals.  */

#ifndef BITS_PER_CHAR
#define BITS_PER_CHAR 8
#endif

#ifndef BITS_PER_SHORT
#define BITS_PER_SHORT 16
#endif

#ifndef BITS_PER_INT
#define BITS_PER_INT 32
#endif

#ifndef BITS_PER_LONG
#ifdef _LP64
#define BITS_PER_LONG 64
#else
#define BITS_PER_LONG 32
#endif
#endif

#if !defined BITS_PER_LONG_LONG && HAVE_LONG_LONG_INT
#define BITS_PER_LONG_LONG 64
#endif

/* Define if the compiler supports function prototypes.  It may do so but
   not define __STDC__ (e.g. DEC C by default) or may define it as zero.  */
#undef PROTOTYPES

#include <string.h>
#include <stdlib.h>

#ifndef HAVE_STRCHR
#define strchr(a, b) index (a, b)
#endif

#ifndef HAVE_STRRCHR
#define strrchr(a, b) rindex (a, b)
#endif

#if defined __GNUC__ && (__GNUC__ > 2 \
                         || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5))
#define NO_RETURN	__attribute__ ((__noreturn__))
#else
#define NO_RETURN	/* nothing */
#endif

#if __GNUC__ >= 3  /* On GCC 3.0 we might get a warning.  */
#define NO_INLINE __attribute__((noinline))
#else
#define NO_INLINE
#endif

#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1))
#define EXTERNALLY_VISIBLE __attribute__((externally_visible))
#else
#define EXTERNALLY_VISIBLE
#endif

#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
# define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
#else
# define ATTRIBUTE_FORMAT(spec) /* empty */
#endif

#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
# define ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
   ATTRIBUTE_FORMAT ((__gnu_printf__, formatstring_parameter, first_argument))
#else
# define ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
   ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument))
#endif

/* Some versions of GNU/Linux define noinline in their headers.  */
#ifdef noinline
#undef noinline
#endif

/* These won't be used automatically yet.  We also need to know, at least,
   that the stack is continuous.  */
#ifdef __GNUC__
#  ifndef GC_SETJMP_WORKS
  /* GC_SETJMP_WORKS is nearly always appropriate for GCC.  */
#    define GC_SETJMP_WORKS 1
#  endif
#  ifndef GC_LISP_OBJECT_ALIGNMENT
#    define GC_LISP_OBJECT_ALIGNMENT (__alignof__ (Lisp_Object))
#  endif
#endif

#endif /* EMACS_CONFIG_H */

/*
Local Variables:
mode: c
End:
*/
])dnl

#### Report on what we decided to do.
#### Report GTK as a toolkit, even if it doesn't use Xt.
#### It makes printing result more understandable as using GTK sets
#### toolkit_scroll_bars to yes by default.
if test "${HAVE_GTK}" = "yes"; then
  USE_X_TOOLKIT=GTK
fi

and_machfile=
if test -n "$machfile"; then
  and_machfile=" and \`${machfile}'"
fi

echo "
Configured for \`${canonical}'.

  Where should the build process find the source code?    ${srcdir}
  What operating system and machine description files should Emacs use?
        \`${opsysfile}'${and_machfile}
  What compiler should emacs be built with?               ${CC} ${CFLAGS}
  Should Emacs use the GNU version of malloc?             ${GNU_MALLOC}${GNU_MALLOC_reason}
  Should Emacs use a relocating allocator for buffers?    ${REL_ALLOC}
  Should Emacs use mmap(2) for buffer allocation?         $use_mmap_for_buffers
  What window system should Emacs use?                    ${window_system}
  What toolkit should Emacs use?                          ${USE_X_TOOLKIT}"

if test -n "${x_includes}"; then
echo "  Where do we find X Windows header files?                ${x_includes}"
else
echo "  Where do we find X Windows header files?                Standard dirs"
fi
if test -n "${x_libraries}"; then
echo "  Where do we find X Windows libraries?                   ${x_libraries}"
else
echo "  Where do we find X Windows libraries?                   Standard dirs"
fi

echo "  Does Emacs use -lXaw3d?                                 ${HAVE_XAW3D}"
echo "  Does Emacs use -lXpm?                                   ${HAVE_XPM}"
echo "  Does Emacs use -ljpeg?                                  ${HAVE_JPEG}"
echo "  Does Emacs use -ltiff?                                  ${HAVE_TIFF}"
echo "  Does Emacs use a gif library?                           ${HAVE_GIF} $LIBGIF"
echo "  Does Emacs use -lpng?                                   ${HAVE_PNG}"
echo "  Does Emacs use -lrsvg-2?                                ${HAVE_RSVG}"
echo "  Does Emacs use imagemagick?                             ${HAVE_IMAGEMAGICK}"

echo "  Does Emacs use -lgpm?                                   ${HAVE_GPM}"
echo "  Does Emacs use -ldbus?                                  ${HAVE_DBUS}"
echo "  Does Emacs use -lgconf?                                 ${HAVE_GCONF}"
echo "  Does Emacs use -lselinux?                               ${HAVE_LIBSELINUX}"
echo "  Does Emacs use -lgnutls (2.6.x or higher)?              ${HAVE_GNUTLS}"
echo "  Does Emacs use -lxml2?                                  ${HAVE_LIBXML2}"

echo "  Does Emacs use -lfreetype?                              ${HAVE_FREETYPE}"
echo "  Does Emacs use -lm17n-flt?                              ${HAVE_M17N_FLT}"
echo "  Does Emacs use -lotf?                                   ${HAVE_LIBOTF}"
echo "  Does Emacs use -lxft?                                   ${HAVE_XFT}"

echo "  Does Emacs use toolkit scroll bars?                     ${USE_TOOLKIT_SCROLL_BARS}"
echo

if test $USE_XASSERTS = yes; then
   echo "  Compiling with asserts turned on."
   CPPFLAGS="$CPPFLAGS -DXASSERTS=1"
fi

echo

if test "$HAVE_NS" = "yes"; then
   echo
   echo "You must run \"make install\" in order to test the built application.
The installed application will go to nextstep/Emacs.app and can be
run or moved from there."
   if test "$EN_NS_SELF_CONTAINED" = "yes"; then
      echo "The application will be fully self-contained."
    else
      echo "The lisp resources for the application will be installed under ${prefix}.
You may need to run \"make install\" with sudo.  The application will fail
to run if these resources are not installed."
   fi
   echo
fi


# Remove any trailing slashes in these variables.
[test "${prefix}" != NONE &&
  prefix=`echo "${prefix}" | sed 's,\([^/]\)/*$,\1,'`
test "${exec_prefix}" != NONE &&
  exec_prefix=`echo "${exec_prefix}" | sed 's,\([^/]\)/*$,\1,'`]

dnl Obviously there is duplication here wrt $SUBDIR_MAKEFILES.
dnl You _can_ use that variable in AC_CONFIG_FILES, so long as any directory
dnl using automake (ie lib/) is explicitly listed and not "hidden" in a variable
dnl (else you get "no `Makefile.am' found for any configure output").
dnl This will work, but you get a config.status that is not quite right
dnl (see http://lists.gnu.org/archive/html/bug-autoconf/2008-08/msg00028.html).
dnl That doesn't have any obvious consequences for Emacs, but on the whole
dnl it seems better to just live with the duplication.
SUBDIR_MAKEFILES="lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile"

AC_CONFIG_FILES([Makefile lib/Makefile lib-src/Makefile oldXMenu/Makefile \
       doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile \
       doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile \
       leim/Makefile])

dnl test/ is not present in release tarfiles.
opt_makefile=test/automated/Makefile

if test -f $srcdir/${opt_makefile}.in; then
  SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
  dnl Again, it's best not to use a variable.  Though you can add
  dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
  AC_CONFIG_FILES([test/automated/Makefile])
fi

SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`

AC_SUBST(SUBDIR_MAKEFILES_IN)

dnl Make the necessary directories, if they don't exist.
AC_CONFIG_COMMANDS([mkdirs], [
for dir in etc lisp ; do
  test -d ${dir} || mkdir ${dir}
done
])

dnl You might wonder (I did) why epaths.h is generated by running make,
dnl rather than just letting configure generate it from epaths.in.
dnl One reason is that the various paths are not fully expanded (see above);
dnl eg gamedir=${prefix}/var/games/emacs.
dnl Secondly, the GNU Coding standards require that one should be able
dnl to run `make prefix=/some/where/else' and override the values set
dnl by configure.  This also explains the `move-if-change' test and
dnl the use of force in the `epaths-force' rule in Makefile.in.
AC_CONFIG_COMMANDS([epaths], [
echo creating src/epaths.h
${MAKE-make} epaths-force
], [GCC="$GCC" NON_GNU_CPP="$NON_GNU_CPP" CPP="$CPP" CPPFLAGS="$CPPFLAGS"])

AC_CONFIG_COMMANDS([gdbinit], [
if test ! -f src/.gdbinit && test -f $srcdir/src/.gdbinit; then
  echo creating src/.gdbinit
  echo source $srcdir/src/.gdbinit > src/.gdbinit
fi
])

AC_OUTPUT

dnl configure.in ends here
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.