summaryrefslogtreecommitdiff
path: root/acinclude.m4
blob: 084f70cc56dbbc434bb62bfb13e47f29a3053ab1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
dnl $Id$
dnl
dnl This file contains local autoconf functions.

dnl PHP_ADD_MAKEFILE_FRAGMENT([srcfile[, ext_srcdir[, ext_builddir]]])
dnl
dnl Processes a file called Makefile.frag in the source directory
dnl of the most recently added extension. $(srcdir) and $(builddir)
dnl are substituted with the proper paths. Can be used to supply
dnl custom rules and/or additional targets.
dnl
AC_DEFUN([PHP_ADD_MAKEFILE_FRAGMENT],[
  ifelse($1,,src=$ext_srcdir/Makefile.frag,src=$1)
  ifelse($2,,ac_srcdir=$ext_srcdir,ac_srcdir=$2)
  ifelse($3,,ac_builddir=$ext_builddir,ac_builddir=$3)
  sed -e "s#\$(srcdir)#$ac_srcdir#g" -e "s#\$(builddir)#$ac_builddir#g" $src  >> Makefile.fragments
])

AC_DEFUN(PHP_PROG_RE2C,[
  AC_CHECK_PROG(RE2C, re2c, re2c, [exit 0;])
])


dnl PHP_DEFINE(WHAT[, value])
dnl
dnl Creates builddir/include/what.h and in there #define WHAT value
dnl
AC_DEFUN([PHP_DEFINE],[
  [echo "#define ]$1[]ifelse([$2],,[ 1],[ $2])[" > include/php_]translit($1,A-Z,a-z)[.h]
])

dnl PHP_INIT_BUILD_SYSTEM
dnl
AC_DEFUN([PHP_INIT_BUILD_SYSTEM],[
test -d include || mkdir include
> Makefile.objects
> Makefile.fragments
dnl We need to play tricks here to avoid matching the grep line itself
pattern=define
egrep $pattern'.*include/php' $srcdir/configure|sed 's/.*>//'|xargs touch 2>/dev/null
])

dnl PHP_GEN_GLOBAL_MAKEFILE
dnl 
dnl Generates the global makefile.
dnl
AC_DEFUN([PHP_GEN_GLOBAL_MAKEFILE],[
  cat >Makefile <<EOF
srcdir = $abs_srcdir
builddir = $abs_builddir
top_srcdir = $abs_srcdir
top_builddir = $abs_builddir
EOF
  for i in $PHP_VAR_SUBST; do
    eval echo "$i = \$$i" >> Makefile
  done

  cat $abs_srcdir/Makefile.global Makefile.fragments Makefile.objects >> Makefile
])

dnl PHP_ADD_SOURCES(source-path, sources[, special-flags[, type]])
dnl
dnl Adds sources which are located relative to source-path to the 
dnl array of type type.  Sources are processed with optional 
dnl special-flags which are passed to the compiler.  Sources
dnl can be either written in C or C++ (filenames shall end in .c 
dnl or .cpp, respectively).
dnl
dnl Note: If source-path begins with a "/", the "/" is removed and
dnl the path is interpreted relative to the top build-directory.
dnl
dnl which array to append to?
AC_DEFUN([PHP_ADD_SOURCES],[
  PHP_ADD_SOURCES_X($1, $2, $3, ifelse($4,cli,PHP_CLI_OBJS,ifelse($4,sapi,PHP_SAPI_OBJS,PHP_GLOBAL_OBJS)))
])
dnl
dnl _PHP_ASSIGN_BUILD_VARS(type)
dnl internal, don't use
AC_DEFUN([_PHP_ASSIGN_BUILD_VARS],[
ifelse($1,shared,[
  b_c_pre=$shared_c_pre
  b_cxx_pre=$shared_cxx_pre
  b_c_meta=$shared_c_meta
  b_cxx_meta=$shared_cxx_meta
  b_c_post=$shared_c_post
  b_cxx_post=$shared_cxx_post
],[
  b_c_pre=$php_c_pre
  b_cxx_pre=$php_cxx_pre
  b_c_meta=$php_c_meta
  b_cxx_meta=$php_cxx_meta
  b_c_post=$php_c_post
  b_cxx_post=$php_cxx_post
])dnl
  b_lo=[$]$1_lo
])

dnl PHP_ADD_SOURCES_X(source-path, sources[, special-flags[, target-var[, shared[, special-post-flags]]]])
dnl
dnl Additional to PHP_ADD_SOURCES (see above), this lets you set the
dnl name of the array target-var directly, as well as whether
dnl shared objects will be built from the sources.  Should not be 
dnl used directly.
dnl 
AC_DEFUN([PHP_ADD_SOURCES_X],[
dnl relative to source- or build-directory?
dnl ac_srcdir/ac_bdir include trailing slash
  case $1 in
  ""[)] ac_srcdir="$abs_srcdir/"; unset ac_bdir; ac_inc="-I. -I$abs_srcdir" ;;
  /*[)] ac_srcdir=`echo "$1"|cut -c 2-`"/"; ac_bdir=$ac_srcdir; ac_inc="-I$ac_bdir -I$abs_srcdir/$ac_bdir" ;;
  *[)] ac_srcdir="$abs_srcdir/$1/"; ac_bdir="$1/"; ac_inc="-I$ac_bdir -I$ac_srcdir" ;;
  esac
  
dnl how to build .. shared or static?
  ifelse($5,yes,_PHP_ASSIGN_BUILD_VARS(shared),_PHP_ASSIGN_BUILD_VARS(php))

dnl iterate over the sources
  old_IFS=[$]IFS
  for ac_src in $2; do
  
dnl remove the suffix
      IFS=.
      set $ac_src
      ac_obj=[$]1
      IFS=$old_IFS
      
dnl append to the array which has been dynamically chosen at m4 time
      $4="[$]$4 [$]ac_bdir[$]ac_obj.lo"

dnl choose the right compiler/flags/etc. for the source-file
      case $ac_src in
	  *.c[)] ac_comp="$b_c_pre $3 $ac_inc $b_c_meta -c $ac_srcdir$ac_src -o $ac_bdir$ac_obj.$b_lo $6$b_c_post" ;;
	  *.s[)] ac_comp="$b_c_pre $3 $ac_inc $b_c_meta -c $ac_srcdir$ac_src -o $ac_bdir$ac_obj.$b_lo $6$b_c_post" ;;
	  *.S[)] ac_comp="$b_c_pre $3 $ac_inc $b_c_meta -c $ac_srcdir$ac_src -o $ac_bdir$ac_obj.$b_lo $6$b_c_post" ;;
	  *.cpp[)] ac_comp="$b_cxx_pre $3 $ac_inc $b_cxx_meta -c $ac_srcdir$ac_src -o $ac_bdir$ac_obj.$b_lo $6$b_cxx_post" ;;
      esac

dnl create a rule for the object/source combo
	  cat >>Makefile.objects<<EOF
$ac_bdir[$]ac_obj.lo: $ac_srcdir[$]ac_src
	$ac_comp
EOF
  done
])

dnl
dnl Separator into the configure --help display.
dnl 
AC_DEFUN([PHP_HELP_SEPARATOR],[
AC_ARG_ENABLE([],[
$1
],[])
])

dnl
dnl PHP_TARGET_RDYNAMIC
dnl
dnl Checks whether -rdynamic is supported by the compiler.  This
dnl is necessary for some targets to populate the global symbol
dnl table.  Otherwise, dynamic modules would not be able to resolve
dnl PHP-related symbols.
dnl
dnl If successful, adds -rdynamic to PHP_LDFLAGS.
dnl
AC_DEFUN([PHP_TARGET_RDYNAMIC],[
  if test -n "$GCC"; then
    dnl we should use a PHP-specific macro here
    TSRM_CHECK_GCC_ARG(-rdynamic, gcc_rdynamic=yes)
    if test "$gcc_rdynamic" = "yes"; then
      PHP_LDFLAGS="$PHP_LDFLAGS -rdynamic"
    fi
  fi
])

AC_DEFUN([PHP_REMOVE_USR_LIB],[
  unset ac_new_flags
  for i in [$]$1; do
    case [$]i in
    -L/usr/lib|-L/usr/lib/[)] ;;
    *[)] ac_new_flags="[$]ac_new_flags [$]i" ;;
    esac
  done
  $1=[$]ac_new_flags
])

dnl PHP_EVAL_LIBLINE(LINE, SHARED-LIBADD)
dnl
dnl Use this macro, if you need to add libraries and or library search
dnl paths to the PHP build system which are only given in compiler
dnl notation.
dnl
AC_DEFUN([PHP_EVAL_LIBLINE],[
  for ac_i in $1; do
    case $ac_i in
    -l*[)]
      ac_ii=`echo $ac_i|cut -c 3-`
      PHP_ADD_LIBRARY($ac_ii,1,$2)
    ;;
    -L*[)]
      ac_ii=`echo $ac_i|cut -c 3-`
      PHP_ADD_LIBPATH($ac_ii,$2)
    ;;
    esac
  done
])

dnl PHP_EVAL_INCLINE(LINE)
dnl
dnl Use this macro, if you need to add header search paths to the PHP
dnl build system which are only given in compiler notation.
dnl
AC_DEFUN([PHP_EVAL_INCLINE],[
  for ac_i in $1; do
    case $ac_i in
    -I*[)]
      ac_ii=`echo $ac_i|cut -c 3-`
      PHP_ADD_INCLUDE($ac_ii)
    ;;
    esac
  done
])

AC_DEFUN([PHP_READDIR_R_TYPE],[
  dnl HAVE_READDIR_R is also defined by libmysql
  AC_CHECK_FUNC(readdir_r,ac_cv_func_readdir_r=yes,ac_cv_func_readdir=no)
  if test "$ac_cv_func_readdir_r" = "yes"; then
  AC_CACHE_CHECK(for type of readdir_r, ac_cv_what_readdir_r,[
    AC_TRY_RUN([
#define _REENTRANT
#include <sys/types.h>
#include <dirent.h>

#ifndef PATH_MAX
#define PATH_MAX 1024
#endif

main() {
	DIR *dir;
	char entry[sizeof(struct dirent)+PATH_MAX];
	struct dirent *pentry = (struct dirent *) &entry;

	dir = opendir("/");
	if (!dir) 
		exit(1);
	if (readdir_r(dir, (struct dirent *) entry, &pentry) == 0)
		exit(0);
	exit(1);
}
    ],[
      ac_cv_what_readdir_r=POSIX
    ],[
      AC_TRY_CPP([
#define _REENTRANT
#include <sys/types.h>
#include <dirent.h>
int readdir_r(DIR *, struct dirent *);
        ],[
          ac_cv_what_readdir_r=old-style
        ],[
          ac_cv_what_readdir_r=none
      ])
    ],[
      ac_cv_what_readdir_r=none
   ])
  ])
    case $ac_cv_what_readdir_r in
    POSIX)
      AC_DEFINE(HAVE_POSIX_READDIR_R,1,[whether you have POSIX readdir_r]);;
    old-style)
      AC_DEFINE(HAVE_OLD_READDIR_R,1,[whether you have old-style readdir_r]);;
    esac
  fi
])

AC_DEFUN([PHP_SHLIB_SUFFIX_NAME],[
  PHP_SUBST(SHLIB_SUFFIX_NAME)
  SHLIB_SUFFIX_NAME=so
  case $host_alias in
  *hpux*[)]
	SHLIB_SUFFIX_NAME=sl
	;;
  *darwin*[)]
	SHLIB_SUFFIX_NAME=dylib
	;;
  esac
])

AC_DEFUN([PHP_DEBUG_MACRO],[
  DEBUG_LOG=$1
  cat >$1 <<X
CONFIGURE:  $CONFIGURE_COMMAND
CC:         $CC
CFLAGS:     $CFLAGS
CPPFLAGS:   $CPPFLAGS
CXX:        $CXX
CXXFLAGS:   $CXXFLAGS
INCLUDES:   $INCLUDES
LDFLAGS:    $LDFLAGS
LIBS:       $LIBS
DLIBS:      $DLIBS
SAPI:       $PHP_SAPI
PHP_RPATHS: $PHP_RPATHS
uname -a:   `uname -a`

X
    cat >conftest.$ac_ext <<X
main()
{
  exit(0);
}
X
    (eval echo \"$ac_link\"; eval $ac_link && ./conftest) >>$1 2>&1
    rm -fr conftest*
])

AC_DEFUN([PHP_DOES_PWRITE_WORK],[
  AC_TRY_RUN([
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
$1
    main() {
    int fd = open("conftest_in", O_WRONLY|O_CREAT, 0600);

    if (fd < 0) exit(1);
    if (pwrite(fd, "text", 4, 0) != 4) exit(1);
    /* Linux glibc breakage until 2.2.5 */
    if (pwrite(fd, "text", 4, -1) != -1 || errno != EINVAL) exit(1);
    exit(0);
    }

  ],[
    ac_cv_pwrite=yes
  ],[
    ac_cv_pwrite=no
  ],[
    ac_cv_pwrite=no
  ])
])

AC_DEFUN([PHP_DOES_PREAD_WORK],[
  echo test > conftest_in
  AC_TRY_RUN([
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
$1
    main() {
    char buf[3]; 
    int fd = open("conftest_in", O_RDONLY);
    if (fd < 0) exit(1);
    if (pread(fd, buf, 2, 0) != 2) exit(1);
    /* Linux glibc breakage until 2.2.5 */
    if (pread(fd, buf, 2, -1) != -1 || errno != EINVAL) exit(1);
    exit(0);
    }
  ],[
    ac_cv_pread=yes
  ],[
    ac_cv_pread=no
  ],[
    ac_cv_pread=no
  ])
  rm -f conftest_in
])

AC_DEFUN([PHP_PWRITE_TEST],[
  AC_CACHE_CHECK(whether pwrite works,ac_cv_pwrite,[
    PHP_DOES_PWRITE_WORK
    if test "$ac_cv_pwrite" = "no"; then
      PHP_DOES_PWRITE_WORK([ssize_t pwrite(int, void *, size_t, off64_t);])
      if test "$ac_cv_pwrite" = "yes"; then
        ac_cv_pwrite=64
      fi
    fi
  ])

  if test "$ac_cv_pwrite" != "no"; then
    AC_DEFINE(HAVE_PWRITE, 1, [ ])
    if test "$ac_cv_pwrite" = "64"; then
      AC_DEFINE(PHP_PWRITE_64, 1, [whether pwrite64 is default])
    fi
  fi  
])

AC_DEFUN([PHP_PREAD_TEST],[
  AC_CACHE_CHECK(whether pread works,ac_cv_pread,[
    PHP_DOES_PREAD_WORK
    if test "$ac_cv_pread" = "no"; then
      PHP_DOES_PREAD_WORK([ssize_t pread(int, void *, size_t, off64_t);])
      if test "$ac_cv_pread" = "yes"; then
        ac_cv_pread=64
      fi
    fi
  ])

  if test "$ac_cv_pread" != "no"; then
    AC_DEFINE(HAVE_PREAD, 1, [ ])
    if test "$ac_cv_pread" = "64"; then
      AC_DEFINE(PHP_PREAD_64, 1, [whether pread64 is default])
    fi
  fi  
])

AC_DEFUN([PHP_MISSING_TIME_R_DECL],[
  AC_MSG_CHECKING([for missing declarations of reentrant functions])
  AC_TRY_COMPILE([#include <time.h>],[struct tm *(*func)() = localtime_r],[
    :
  ],[
    AC_DEFINE(MISSING_LOCALTIME_R_DECL,1,[Whether localtime_r is declared])
  ])
  AC_TRY_COMPILE([#include <time.h>],[struct tm *(*func)() = gmtime_r],[
    :
  ],[
    AC_DEFINE(MISSING_GMTIME_R_DECL,1,[Whether gmtime_r is declared])
  ])
  AC_TRY_COMPILE([#include <time.h>],[char *(*func)() = asctime_r],[
    :
  ],[
    AC_DEFINE(MISSING_ASCTIME_R_DECL,1,[Whether asctime_r is declared])
  ])
  AC_TRY_COMPILE([#include <time.h>],[char *(*func)() = ctime_r],[
    :
  ],[
    AC_DEFINE(MISSING_CTIME_R_DECL,1,[Whether ctime_r is declared])
  ])
  AC_TRY_COMPILE([#include <string.h>],[char *(*func)() = strtok_r],[
    :
  ],[
    AC_DEFINE(MISSING_STRTOK_R_DECL,1,[Whether strtok_r is declared])
  ])
  AC_MSG_RESULT([done])
])

dnl
dnl PHP_LIBGCC_LIBPATH(gcc)
dnl Stores the location of libgcc in libgcc_libpath
dnl
AC_DEFUN([PHP_LIBGCC_LIBPATH],[
  changequote({,})
  libgcc_libpath=`$1 --print-libgcc-file-name|sed 's%/*[^/][^/]*$%%'`
  changequote([,])
])

AC_DEFUN([PHP_ARG_ANALYZE_EX],[
ext_output="yes, shared"
ext_shared=yes
case [$]$1 in
shared,*[)]
  $1=`echo "[$]$1"|sed 's/^shared,//'`
  ;;
shared[)]
  $1=yes
  ;;
no[)]
  ext_output=no
  ext_shared=no
  ;;
*[)]
  ext_output=yes
  ext_shared=no
  ;;
esac

PHP_ALWAYS_SHARED([$1])
])

AC_DEFUN([PHP_ARG_ANALYZE],[
ifelse([$3],yes,[PHP_ARG_ANALYZE_EX([$1])],[ext_output=ifelse([$]$1,,no,[$]$1)])
ifelse([$2],,,[AC_MSG_RESULT([$ext_output])])
])

dnl
dnl PHP_ARG_WITH(arg-name, check message, help text[, default-val[, extension-or-not]])
dnl Sets PHP_ARG_NAME either to the user value or to the default value.
dnl default-val defaults to no.  This will also set the variable ext_shared,
dnl and will overwrite any previous variable of that name.
dnl If extension-or-not is yes (default), then do the ENABLE_ALL check and run
dnl the PHP_ARG_ANALYZE_EX.
dnl
AC_DEFUN([PHP_ARG_WITH],[
PHP_REAL_ARG_WITH([$1],[$2],[$3],[$4],PHP_[]translit($1,a-z0-9-,A-Z0-9_),[ifelse($5,,yes,$5)])
])

AC_DEFUN([PHP_REAL_ARG_WITH],[
ifelse([$2],,,[AC_MSG_CHECKING([$2])])
AC_ARG_WITH($1,[$3],$5=[$]withval,
[
  $5=ifelse($4,,no,$4)

  if test "$PHP_ENABLE_ALL" && test "$6" = "yes"; then
    $5=$PHP_ENABLE_ALL
  fi
])
PHP_ARG_ANALYZE($5,[$2],$6)
])

dnl
dnl PHP_ARG_ENABLE(arg-name, check message, help text[, default-val[, extension-or-not]])
dnl Sets PHP_ARG_NAME either to the user value or to the default value.
dnl default-val defaults to no.  This will also set the variable ext_shared,
dnl and will overwrite any previous variable of that name.
dnl If extension-or-not is yes (default), then do the ENABLE_ALL check and run
dnl the PHP_ARG_ANALYZE_EX.
dnl
AC_DEFUN([PHP_ARG_ENABLE],[
PHP_REAL_ARG_ENABLE([$1],[$2],[$3],[$4],PHP_[]translit($1,a-z-,A-Z_),[ifelse($5,,yes,$5)])
])

AC_DEFUN([PHP_REAL_ARG_ENABLE],[
ifelse([$2],,,[AC_MSG_CHECKING([$2])])
AC_ARG_ENABLE($1,[$3],$5=[$]enableval,
[
  $5=ifelse($4,,no,$4)

  if test "$PHP_ENABLE_ALL" && test "$6" = "yes"; then
    $5=$PHP_ENABLE_ALL
  fi
])
PHP_ARG_ANALYZE($5,[$2],$6)
])

AC_DEFUN([PHP_MODULE_PTR],[
  EXTRA_MODULE_PTRS="$EXTRA_MODULE_PTRS $1,"
])
 
AC_DEFUN([PHP_CONFIG_NICE],[
  test -f $1 && mv $1 $1.old
  rm -f $1.old
  cat >$1<<EOF
#! /bin/sh
#
# Created by configure

EOF

  for var in CFLAGS CXXFLAGS CPPFLAGS LDFLAGS LIBS CC CXX; do
    eval val=\$$var
    if test -n "$val"; then
      echo "$var='$val' \\" >> $1
    fi
  done

  for arg in [$]0 "[$]@"; do
    echo "'[$]arg' \\" >> $1
  done
  echo '"[$]@"' >> $1
  chmod +x $1
])

AC_DEFUN([PHP_TIME_R_TYPE],[
AC_CACHE_CHECK(for type of reentrant time-related functions, ac_cv_time_r_type,[
AC_TRY_RUN([
#include <time.h>

main() {
char buf[27];
struct tm t;
time_t old = 0;
int r, s;

s = gmtime_r(&old, &t);
r = (int) asctime_r(&t, buf, 26);
if (r == s && s == 0) return (0);
return (1);
}
],[
  ac_cv_time_r_type=hpux
],[
  AC_TRY_RUN([
#include <time.h>
main() {
  struct tm t, *s;
  time_t old = 0;
  char buf[27], *p;
  
  s = gmtime_r(&old, &t);
  p = asctime_r(&t, buf, 26);
  if (p == buf && s == &t) return (0);
  return (1);
}
  ],[
    ac_cv_time_r_type=irix
  ],[
    ac_cv_time_r_type=POSIX
  ])
],[
  ac_cv_time_r_type=POSIX
])
])
  case $ac_cv_time_r_type in
  hpux[)] AC_DEFINE(PHP_HPUX_TIME_R,1,[Whether you have HP-UX 10.x]) ;;
  irix[)] AC_DEFINE(PHP_IRIX_TIME_R,1,[Whether you have IRIX-style functions]) ;;
  esac
])

AC_DEFUN([PHP_SUBST],[
  PHP_VAR_SUBST="$PHP_VAR_SUBST $1"
])

AC_DEFUN([PHP_SUBST_OLD],[
  PHP_SUBST($1)
  AC_SUBST($1)
])

AC_DEFUN([PHP_TM_GMTOFF],[
AC_CACHE_CHECK([for tm_gmtoff in struct tm], ac_cv_struct_tm_gmtoff,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_gmtoff;],
  ac_cv_struct_tm_gmtoff=yes, ac_cv_struct_tm_gmtoff=no)])

if test "$ac_cv_struct_tm_gmtoff" = yes; then
  AC_DEFINE(HAVE_TM_GMTOFF,1,[whether you have tm_gmtoff in struct tm])
fi
])

dnl PHP_CONFIGURE_PART(MESSAGE)
dnl Idea borrowed from mm
AC_DEFUN([PHP_CONFIGURE_PART],[
  AC_MSG_RESULT()
  AC_MSG_RESULT([${T_MD}$1${T_ME}])
])

AC_DEFUN([PHP_PROG_SENDMAIL],[
PHP_ALT_PATH=/usr/bin:/usr/sbin:/usr/etc:/etc:/usr/ucblib:/usr/lib
AC_PATH_PROG(PROG_SENDMAIL, sendmail,[], $PATH:$PHP_ALT_PATH)
if test -n "$PROG_SENDMAIL"; then
  AC_DEFINE(HAVE_SENDMAIL,1,[whether you have sendmail])
fi
])

AC_DEFUN([PHP_RUNPATH_SWITCH],[
dnl check for -R, etc. switch
AC_MSG_CHECKING([if compiler supports -R])
AC_CACHE_VAL(php_cv_cc_dashr,[
	SAVE_LIBS=$LIBS
	LIBS="-R /usr/lib $LIBS"
	AC_TRY_LINK([], [], php_cv_cc_dashr=yes, php_cv_cc_dashr=no)
	LIBS=$SAVE_LIBS])
AC_MSG_RESULT([$php_cv_cc_dashr])
if test $php_cv_cc_dashr = "yes"; then
	ld_runpath_switch=-R
else
	AC_MSG_CHECKING([if compiler supports -Wl,-rpath,])
	AC_CACHE_VAL(php_cv_cc_rpath,[
		SAVE_LIBS=$LIBS
		LIBS="-Wl,-rpath,/usr/lib $LIBS"
		AC_TRY_LINK([], [], php_cv_cc_rpath=yes, php_cv_cc_rpath=no)
		LIBS=$SAVE_LIBS])
	AC_MSG_RESULT([$php_cv_cc_rpath])
	if test $php_cv_cc_rpath = "yes"; then
		ld_runpath_switch=-Wl,-rpath,
	else
		dnl something innocuous
		ld_runpath_switch=-L
	fi
fi
])

AC_DEFUN([PHP_STRUCT_FLOCK],[
AC_CACHE_CHECK(for struct flock,ac_cv_struct_flock,
    AC_TRY_COMPILE([
#include <unistd.h>
#include <fcntl.h>
        ],
        [struct flock x;],
        [
          ac_cv_struct_flock=yes
        ],[
          ac_cv_struct_flock=no
        ])
)
if test "$ac_cv_struct_flock" = "yes" ; then
    AC_DEFINE(HAVE_STRUCT_FLOCK, 1,[whether you have struct flock])
fi
])

AC_DEFUN([PHP_SOCKLEN_T],[
AC_CACHE_CHECK(for socklen_t,ac_cv_socklen_t,
  AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
socklen_t x;
],[
  ac_cv_socklen_t=yes
],[
  ac_cv_socklen_t=no
]))
if test "$ac_cv_socklen_t" = "yes"; then
  AC_DEFINE(HAVE_SOCKLEN_T, 1, [Whether you have socklen_t])
fi
])

dnl
dnl PHP_SET_SYM_FILE(path)
dnl
dnl set the path of the file which contains the symbol export list
dnl
AC_DEFUN([PHP_SET_SYM_FILE],
[
  PHP_SYM_FILE=$1
])

dnl
dnl PHP_BUILD_THREAD_SAFE
dnl
AC_DEFUN([PHP_BUILD_THREAD_SAFE],[
  enable_maintainer_zts=yes
  if test "$pthreads_working" != "yes"; then
    AC_MSG_ERROR([ZTS currently requires working POSIX threads. We were unable to verify that your system supports Pthreads.])
  fi
])

AC_DEFUN([PHP_REQUIRE_CXX],[
  if test -z "$php_cxx_done"; then
    AC_PROG_CXX
    AC_PROG_CXXCPP
    php_cxx_done=yes
  fi
])

dnl
dnl PHP_BUILD_SHARED
dnl
AC_DEFUN([PHP_BUILD_SHARED],[
  PHP_BUILD_PROGRAM
  OVERALL_TARGET=libphp5.la
  php_build_target=shared
  
  php_c_pre=$shared_c_pre
  php_c_meta=$shared_c_meta
  php_c_post=$shared_c_post
  php_cxx_pre=$shared_cxx_pre
  php_cxx_meta=$shared_cxx_meta
  php_cxx_post=$shared_cxx_post
  php_lo=$shared_lo
])

dnl
dnl PHP_BUILD_STATIC
dnl
AC_DEFUN([PHP_BUILD_STATIC],[
  PHP_BUILD_PROGRAM
  OVERALL_TARGET=libphp5.la
  php_build_target=static
])

dnl
dnl PHP_BUILD_BUNDLE
dnl
AC_DEFUN([PHP_BUILD_BUNDLE],[
  PHP_BUILD_PROGRAM
  OVERALL_TARGET=libs/libphp5.bundle
  php_build_target=static
])

dnl
dnl PHP_BUILD_PROGRAM
dnl
AC_DEFUN([PHP_BUILD_PROGRAM],[
  OVERALL_TARGET=[]ifelse($1,,php,$1)
  php_c_pre='$(CC)'
  php_c_meta='$(COMMON_FLAGS) $(CFLAGS_CLEAN) $(EXTRA_CFLAGS)'
  php_c_post=' && echo > $[@]'
  php_cxx_pre='$(CXX)'
  php_cxx_meta='$(COMMON_FLAGS) $(CXXFLAGS_CLEAN) $(EXTRA_CXXFLAGS)'
  php_cxx_post=' && echo > $[@]'
  php_lo=o
  
  shared_c_pre='$(LIBTOOL) --mode=compile $(CC)'
  shared_c_meta='$(COMMON_FLAGS) $(CFLAGS_CLEAN) $(EXTRA_CFLAGS) -prefer-pic'
  shared_c_post=
  shared_cxx_pre='$(LIBTOOL) --mode=compile $(CXX)'
  shared_cxx_meta='$(COMMON_FLAGS) $(CXXFLAGS_CLEAN) $(EXTRA_CXXFLAGS) -prefer-pic'
  shared_cxx_post=
  shared_lo=lo

  php_build_target=program
])

dnl
dnl PHP_RUN_ONCE(namespace, variable, code)
dnl
dnl execute code, if variable is not set in namespace
dnl
AC_DEFUN([PHP_RUN_ONCE],[
  changequote({,})
  unique=`echo $2|sed 's/[^a-zA-Z0-9]/_/g'`
  changequote([,])
  cmd="echo $ac_n \"\$$1$unique$ac_c\""
  if test -n "$unique" && test "`eval $cmd`" = "" ; then
    eval "$1$unique=set"
    $3
  fi
])

dnl
dnl PHP_EXPAND_PATH(path, variable)
dnl
dnl expands path to an absolute path and assigns it to variable
dnl
AC_DEFUN([PHP_EXPAND_PATH],[
  if test -z "$1" || echo "$1" | grep '^/' >/dev/null ; then
    $2=$1
  else
    changequote({,})
    ep_dir="`echo $1|sed 's%/*[^/][^/]*/*$%%'`"
    changequote([,])
    ep_realdir="`(cd \"$ep_dir\" && pwd)`"
    $2="$ep_realdir/`basename \"$1\"`"
  fi
])
dnl
dnl internal, don't use
AC_DEFUN([_PHP_ADD_LIBPATH_GLOBAL],[
  PHP_RUN_ONCE(LIBPATH, $1, [
    test -n "$ld_runpath_switch" && LDFLAGS="$LDFLAGS $ld_runpath_switch$1"
    LDFLAGS="$LDFLAGS -L$1"
    PHP_RPATHS="$PHP_RPATHS $1"
  ])
])dnl
dnl
dnl
dnl
dnl PHP_ADD_LIBPATH(path[, shared-libadd])
dnl
dnl add a library to linkpath/runpath
dnl
AC_DEFUN([PHP_ADD_LIBPATH],[
  if test "$1" != "/usr/lib"; then
    PHP_EXPAND_PATH($1, ai_p)
    ifelse([$2],,[
      _PHP_ADD_LIBPATH_GLOBAL([$ai_p])
    ],[
      if test "$ext_shared" = "yes"; then
        $2="$ld_runpath_switch$ai_p -L$ai_p [$]$2"
      else
        _PHP_ADD_LIBPATH_GLOBAL([$ai_p])
      fi
    ])
  fi
])

dnl
dnl PHP_UTILIZE_RPATHS()
dnl
dnl builds RPATHS/LDFLAGS from PHP_RPATHS
dnl
AC_DEFUN([PHP_UTILIZE_RPATHS],[
  OLD_RPATHS=$PHP_RPATHS
  unset PHP_RPATHS

  for i in $OLD_RPATHS; do
dnl Can be passed to native cc/libtool
    PHP_LDFLAGS="$PHP_LDFLAGS -L$i"
dnl Libtool-specific
    PHP_RPATHS="$PHP_RPATHS -R $i"
dnl cc-specific
    NATIVE_RPATHS="$NATIVE_RPATHS $ld_runpath_switch$i"
  done

  if test "$PHP_RPATH" = "no"; then
    unset PHP_RPATHS
    unset NATIVE_RPATHS
  fi
])

dnl
dnl PHP_ADD_INCLUDE(path [,before])
dnl
dnl add an include path. 
dnl if before is 1, add in the beginning of INCLUDES.
dnl
AC_DEFUN([PHP_ADD_INCLUDE],[
  if test "$1" != "/usr/include"; then
    PHP_EXPAND_PATH($1, ai_p)
    PHP_RUN_ONCE(INCLUDEPATH, $ai_p, [
      if test "$2"; then
        INCLUDES="-I$ai_p $INCLUDES"
      else
        INCLUDES="$INCLUDES -I$ai_p"
      fi
    ])
  fi
])
dnl
dnl internal, don't use
AC_DEFUN([_PHP_X_ADD_LIBRARY],[dnl
  ifelse([$2],,$3="-l$1 [$]$3", $3="[$]$3 -l$1") dnl
])dnl
dnl
dnl internal, don't use
AC_DEFUN([_PHP_ADD_LIBRARY_SKELETON],[
  case $1 in
  c|c_r|pthread*[)] ;;
  *[)] ifelse($3,,[
    _PHP_X_ADD_LIBRARY($1,$2,$5)
  ],[
    if test "$ext_shared" = "yes"; then
      _PHP_X_ADD_LIBRARY($1,$2,$3)
    else
      $4($1,$2)
    fi
  ]) ;;
  esac
])dnl
dnl
dnl
dnl
dnl PHP_ADD_LIBRARY(library[, append[, shared-libadd]])
dnl
dnl add a library to the link line
dnl
AC_DEFUN([PHP_ADD_LIBRARY],[
  _PHP_ADD_LIBRARY_SKELETON([$1],[$2],[$3],[PHP_ADD_LIBRARY],[LIBS])
])

dnl
dnl PHP_ADD_LIBRARY_DEFER(library[, append[, shared-libadd]])
dnl
dnl add a library to the link line (deferred)
dnl
AC_DEFUN([PHP_ADD_LIBRARY_DEFER],[
  _PHP_ADD_LIBRARY_SKELETON([$1],[$2],[$3],[PHP_ADD_LIBRARY_DEFER],[DLIBS])
])

dnl
dnl PHP_ADD_LIBRARY_WITH_PATH(library, path[, shared-libadd])
dnl
dnl add a library to the link line and path to linkpath/runpath.
dnl if shared-libadd is not empty and $ext_shared is yes,
dnl shared-libadd will be assigned the library information
dnl
AC_DEFUN([PHP_ADD_LIBRARY_WITH_PATH],[
ifelse($3,,[
  if test -n "$2"; then
    PHP_ADD_LIBPATH($2)
  fi
  PHP_ADD_LIBRARY($1)
],[
  if test "$ext_shared" = "yes"; then
    $3="-l$1 [$]$3"
    if test -n "$2"; then
      PHP_ADD_LIBPATH($2,$3)
    fi
  else
    PHP_ADD_LIBRARY_WITH_PATH($1,$2)
  fi
])
])

dnl
dnl PHP_ADD_LIBRARY_DEFER_WITH_PATH(library, path[, shared-libadd])
dnl
dnl add a library to the link line (deferred)
dnl and path to linkpath/runpath (not deferred)
dnl if shared-libadd is not empty and $ext_shared is yes,
dnl shared-libadd will be assigned the library information
dnl
AC_DEFUN([PHP_ADD_LIBRARY_DEFER_WITH_PATH],[
ifelse($3,,[
  if test -n "$2"; then
    PHP_ADD_LIBPATH($2)
  fi
  PHP_ADD_LIBRARY_DEFER($1)
],[
  if test "$ext_shared" = "yes"; then
    $3="-l$1 [$]$3"
    if test -n "$2"; then
      PHP_ADD_LIBPATH($2,$3)
    fi
  else
    PHP_ADD_LIBRARY_DEFER_WITH_PATH($1,$2)
  fi
])
])

dnl
dnl PHP_ADD_FRAMEWORK(framework [,before])
dnl
dnl add a (Darwin / Mac OS X) framework to the link
dnl line. if before is 1, the framework is added
dnl to the beginning of the line.

AC_DEFUN([PHP_ADD_FRAMEWORK], [
  PHP_RUN_ONCE(FRAMEWORKS, $1, [
    if test "$2"; then
      PHP_FRAMEWORKS="-framework $1 $PHP_FRAMEWORKS"
    else
      PHP_FRAMEWORKS="$PHP_FRAMEWORKS -framework $1"
    fi
  ])
])

dnl
dnl PHP_ADD_FRAMEWORKPATH(path [,before])
dnl
dnl add a (Darwin / Mac OS X) framework path to the link
dnl and include lines. default paths include (but are
dnl not limited to) /Local/Library/Frameworks and
dnl /System/Library/Frameworks, so these don't need
dnl to be specifically added. if before is 1, the
dnl framework path is added to the beginning of the
dnl relevant lines.

AC_DEFUN([PHP_ADD_FRAMEWORKPATH], [
  PHP_EXPAND_PATH($1, ai_p)
  PHP_RUN_ONCE(FRAMEWORKPATH, $ai_p, [
    if test "$2"; then
      PHP_FRAMEWORKPATH="-F$ai_p $PHP_FRAMEWORKPATH"
    else
      PHP_FRAMEWORKPATH="$PHP_FRAMEWORKPATH -F$ai_p"
    fi
  ])
])

dnl
dnl PHP_ADD_FRAMEWORK_WITH_PATH(framework, path)
dnl
dnl add a (Darwin / Mac OS X) framework path and the
dnl framework itself to the link and include lines.
AC_DEFUN([PHP_ADD_FRAMEWORK_WITH_PATH], [
  PHP_ADD_FRAMEWORKPATH($2)
  PHP_ADD_FRAMEWORK($1)
])

dnl
dnl Set libtool variable
dnl
AC_DEFUN([PHP_SET_LIBTOOL_VARIABLE],[
  if test -z "$LIBTOOL"; then
    LIBTOOL='$(SHELL) $(top_builddir)/libtool $1'
  else
    LIBTOOL="$LIBTOOL $1"
  fi
])

dnl
dnl Check for cc option
dnl
AC_DEFUN([PHP_CHECK_CC_OPTION],[
  echo "main(){return 0;}" > conftest.$ac_ext
  opt=$1
  changequote({,})
  var=`echo $opt|sed 's/[^a-zA-Z0-9]/_/g'`
  changequote([,])
  AC_MSG_CHECKING([if compiler supports -$1 really])
  ac_php_compile="${CC-cc} -$opt -o conftest $CFLAGS $CPPFLAGS conftest.$ac_ext 2>&1"
  if eval $ac_php_compile 2>&1 | egrep "$opt" > /dev/null 2>&1 ; then
    eval php_cc_$var=no
	AC_MSG_RESULT([no])
  else
    if eval ./conftest 2>/dev/null ; then
      eval php_cc_$var=yes
	  AC_MSG_RESULT([yes])
    else
      eval php_cc_$var=no
	  AC_MSG_RESULT([no])
    fi
  fi
  rm -rf conftest*
])

AC_DEFUN([PHP_REGEX],[

if test "$REGEX_TYPE" = "php"; then
  AC_DEFINE(HSREGEX,1,[ ])
  AC_DEFINE(REGEX,1,[ ])
  PHP_ADD_SOURCES(regex, regcomp.c regexec.c regerror.c regfree.c)
elif test "$REGEX_TYPE" = "system"; then
  AC_DEFINE(REGEX,0,[ ])
fi

AC_MSG_CHECKING([which regex library to use])
AC_MSG_RESULT([$REGEX_TYPE])
])

dnl
dnl See if we have broken header files like SunOS has.
dnl
AC_DEFUN([PHP_MISSING_FCLOSE_DECL],[
  AC_MSG_CHECKING([for fclose declaration])
  AC_TRY_COMPILE([#include <stdio.h>],[int (*func)() = fclose],[
    AC_DEFINE(MISSING_FCLOSE_DECL,0,[ ])
    AC_MSG_RESULT([ok])
  ],[
    AC_DEFINE(MISSING_FCLOSE_DECL,1,[ ])
    AC_MSG_RESULT([missing])
  ])
])

dnl
dnl Check for broken sprintf(), C99 conformance
dnl
AC_DEFUN([PHP_AC_BROKEN_SPRINTF],[
  AC_CACHE_CHECK(whether sprintf is broken, ac_cv_broken_sprintf,[
    AC_TRY_RUN([main() {char buf[20];exit(sprintf(buf,"testing 123")!=11); }],[
      ac_cv_broken_sprintf=no
    ],[
      ac_cv_broken_sprintf=yes
    ],[
      ac_cv_broken_sprintf=no
    ])
  ])
  if test "$ac_cv_broken_sprintf" = "yes"; then
    AC_DEFINE(PHP_BROKEN_SPRINTF, 1, [Whether sprintf is C99 conform])
  else
    AC_DEFINE(PHP_BROKEN_SPRINTF, 0, [Whether sprintf is C99 conform])
  fi
])

dnl
dnl Check for broken snprintf(), C99 conformance
dnl
AC_DEFUN([PHP_AC_BROKEN_SNPRINTF],[
  AC_CACHE_CHECK(whether snprintf is broken, ac_cv_broken_snprintf,[
    AC_TRY_RUN([
#define NULL (0L)
main() {
	char buf[20];
	int res = 0;
	res = res || (snprintf(buf, 2, "marcus") != 6); 
	res = res || (buf[1] != '\0');
	/* Implementations may consider this as an encoding error */
	snprintf(buf, 0, "boerger");
	/* However, they MUST ignore the pointer */
	res = res || (buf[0] != 'm');
	res = res || (snprintf(NULL, 0, "boerger") != 7);
	res = res || (snprintf(buf, sizeof(buf), "%f", 0.12345678) != 8);
	exit(res); 
}
    ],[
      ac_cv_broken_snprintf=no
    ],[
      ac_cv_broken_snprintf=yes
    ],[
      ac_cv_broken_snprintf=no
    ])
  ])
  if test "$ac_cv_broken_snprintf" = "yes"; then
    AC_DEFINE(PHP_BROKEN_SNPRINTF, 1, [Whether snprintf is C99 conform])
  else
    AC_DEFINE(PHP_BROKEN_SNPRINTF, 0, [Whether snprintf is C99 conform])
  fi
])

dnl PHP_SHARED_MODULE(module-name, object-var, build-dir, cxx)
dnl
dnl Basically sets up the link-stage for building module-name
dnl from object_var in build-dir.
dnl
AC_DEFUN([PHP_SHARED_MODULE],[
  install_modules="install-modules"
  PHP_MODULES="$PHP_MODULES \$(phplibdir)/$1.la"
  PHP_SUBST($2)
  cat >>Makefile.objects<<EOF
\$(phplibdir)/$1.la: $3/$1.la
	\$(LIBTOOL) --mode=install cp $3/$1.la \$(phplibdir)

$3/$1.la: \$($2) \$(translit($1,a-z_-,A-Z__)_SHARED_DEPENDENCIES)
	\$(LIBTOOL) --mode=link ifelse($4,,[\$(CC)],[\$(CXX)]) \$(COMMON_FLAGS) \$(CFLAGS_CLEAN) \$(EXTRA_CFLAGS) \$(LDFLAGS) -o \[$]@ -export-dynamic -avoid-version -prefer-pic -module -rpath \$(phplibdir) \$(EXTRA_LDFLAGS) \$($2) \$(translit($1,a-z_-,A-Z__)_SHARED_LIBADD)

EOF
])

dnl
dnl PHP_SELECT_SAPI(name, type[, sources [, extra-cflags [, build-target]]])
dnl
dnl Selects the SAPI name and type (static, shared, programm)
dnl and optionally also the source-files for the SAPI-specific
dnl objects.
dnl
AC_DEFUN([PHP_SELECT_SAPI],[
  PHP_SAPI=$1
  
  case "$2" in
  static[)] PHP_BUILD_STATIC;;
  shared[)] PHP_BUILD_SHARED;;
  bundle[)] PHP_BUILD_BUNDLE;;
  program[)] PHP_BUILD_PROGRAM($5);;
  esac
    
  ifelse($3,,,[PHP_ADD_SOURCES([sapi/$1],[$3],[$4],[sapi])])
])

dnl deprecated
AC_DEFUN([PHP_EXTENSION],[
  sources=`$AWK -f $abs_srcdir/build/scan_makefile_in.awk < []PHP_EXT_SRCDIR($1)[]/Makefile.in`

  PHP_NEW_EXTENSION($1, $sources, $2, $3)

  if test -r "$ext_srcdir/Makefile.frag"; then
    PHP_ADD_MAKEFILE_FRAGMENT
  fi
])

AC_DEFUN([PHP_ADD_BUILD_DIR],[
  BUILD_DIR="$BUILD_DIR $1"
])

AC_DEFUN([PHP_GEN_BUILD_DIRS],[
  $php_shtool mkdir -p $BUILD_DIR
])

dnl
dnl PHP_NEW_EXTENSION(extname, sources [, shared [,sapi_class[, extra-cflags[, cxx]]]])
dnl
dnl Includes an extension in the build.
dnl
dnl "extname" is the name of the ext/ subdir where the extension resides.
dnl "sources" is a list of files relative to the subdir which are used
dnl to build the extension.
dnl "shared" can be set to "shared" or "yes" to build the extension as
dnl a dynamically loadable library. Optional parameter "sapi_class" can
dnl be set to "cli" to mark extension build only with CLI or CGI sapi's.
dnl extra-cflags are passed to the compiler, with @ext_srcdir@ being
dnl substituted.
AC_DEFUN([PHP_NEW_EXTENSION],[
  ext_builddir=[]PHP_EXT_BUILDDIR($1)
  ext_srcdir=[]PHP_EXT_SRCDIR($1)

  ifelse($5,,ac_extra=,[ac_extra=`echo "$5"|sed s#@ext_srcdir@#$ext_srcdir#g`])

  if test "$3" != "shared" && test "$3" != "yes" && test "$4" != "cli"; then
dnl ---------------------------------------------- Static module

    PHP_ADD_SOURCES(PHP_EXT_DIR($1),$2,$ac_extra,)
    EXT_STATIC="$EXT_STATIC $1"
    if test "$3" != "nocli"; then
      EXT_CLI_STATIC="$EXT_CLI_STATIC $1"
    fi
  else
    if test "$3" = "shared" || test "$3" = "yes"; then
dnl ---------------------------------------------- Shared module
      PHP_ADD_SOURCES_X(PHP_EXT_DIR($1),$2,$ac_extra,shared_objects_$1,yes)
      PHP_SHARED_MODULE($1,shared_objects_$1, $ext_builddir, $6)
      AC_DEFINE_UNQUOTED([COMPILE_DL_]translit($1,a-z_-,A-Z__), 1, Whether to build $1 as dynamic module)
    fi
  fi

  if test "$3" != "shared" && test "$3" != "yes" && test "$4" = "cli"; then
dnl ---------------------------------------------- CLI static module
    if test "$PHP_SAPI" = "cgi"; then
      PHP_ADD_SOURCES(PHP_EXT_DIR($1),$2,$ac_extra,)
      EXT_STATIC="$EXT_STATIC $1"
    else
      PHP_ADD_SOURCES(PHP_EXT_DIR($1),$2,$ac_extra,cli)
    fi
    EXT_CLI_STATIC="$EXT_CLI_STATIC $1"
  fi
  PHP_ADD_BUILD_DIR($ext_builddir)
])

dnl
dnl Solaris requires main code to be position independent in order
dnl to let shared objects find symbols.  Weird.  Ugly.
dnl
dnl Must be run after all --with-NN options that let the user
dnl choose dynamic extensions, and after the gcc test.
dnl
AC_DEFUN([PHP_SOLARIS_PIC_WEIRDNESS],[
  AC_MSG_CHECKING([whether -fPIC is required])
  if test -n "$EXT_SHARED"; then
    os=`uname -sr 2>/dev/null`
    case $os in
        "SunOS 5.6"|"SunOS 5.7"[)]
          case $CC in
	    gcc*|egcs*) CFLAGS="$CFLAGS -fPIC";;
	    *[)] CFLAGS="$CFLAGS -fpic";;
	  esac
	  AC_MSG_RESULT([yes]);;
	*[)]
	  AC_MSG_RESULT([no]);;
    esac
  else
    AC_MSG_RESULT([no])
  fi
])

dnl
dnl Checks whether $withval is "shared" or starts with "shared,XXX"
dnl and sets $shared to "yes" or "no", and removes "shared,?" stuff
dnl from $withval.
dnl
AC_DEFUN([PHP_WITH_SHARED],[
  PHP_ARG_ANALYZE_EX(withval)
  shared=$ext_shared
  unset ext_shared ext_output
])

dnl The problem is that the default compilation flags in Solaris 2.6 won't
dnl let programs access large files;  you need to tell the compiler that
dnl you actually want your programs to work on large files.  For more
dnl details about this brain damage please see:
dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html

dnl Written by Paul Eggert <eggert@twinsun.com>.

AC_DEFUN([PHP_SYS_LFS],
[dnl
  # If available, prefer support for large files unless the user specified
  # one of the CPPFLAGS, LDFLAGS, or LIBS variables.
  AC_MSG_CHECKING([whether large file support needs explicit enabling])
  ac_getconfs=''
  ac_result=yes
  ac_set=''
  ac_shellvars='CPPFLAGS LDFLAGS LIBS'
  for ac_shellvar in $ac_shellvars; do
    case $ac_shellvar in
      CPPFLAGS[)] ac_lfsvar=LFS_CFLAGS ;;
      *[)] ac_lfsvar=LFS_$ac_shellvar ;;
    esac
    eval test '"${'$ac_shellvar'+set}"' = set && ac_set=$ac_shellvar
    (getconf $ac_lfsvar) >/dev/null 2>&1 || { ac_result=no; break; }
    ac_getconf=`getconf $ac_lfsvar`
    ac_getconfs=$ac_getconfs$ac_getconf
    eval ac_test_$ac_shellvar=\$ac_getconf
  done
  case "$ac_result$ac_getconfs" in
    yes[)] ac_result=no ;;
  esac
  case "$ac_result$ac_set" in
    yes?*[)] ac_result="yes, but $ac_set is already set, so use its settings"
  esac
  AC_MSG_RESULT([$ac_result])
  case $ac_result in
    yes[)]
      for ac_shellvar in $ac_shellvars; do
        eval $ac_shellvar=\$ac_test_$ac_shellvar
      done ;;
  esac
])

AC_DEFUN([PHP_SOCKADDR_SA_LEN],[
  AC_CACHE_CHECK([for field sa_len in struct sockaddr],ac_cv_sockaddr_sa_len,[
    AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/socket.h>],
    [struct sockaddr s; s.sa_len;],
    [ac_cv_sockaddr_sa_len=yes
     AC_DEFINE(HAVE_SOCKADDR_SA_LEN,1,[ ])],
    [ac_cv_sockaddr_sa_len=no])
  ])
])


dnl ## PHP_OUTPUT(file)
dnl ## adds "file" to the list of files generated by AC_OUTPUT
dnl ## This macro can be used several times.
AC_DEFUN([PHP_OUTPUT],[
  PHP_OUTPUT_FILES="$PHP_OUTPUT_FILES $1"
])

AC_DEFUN([PHP_DECLARED_TIMEZONE],[
  AC_CACHE_CHECK(for declared timezone, ac_cv_declared_timezone,[
    AC_TRY_COMPILE([
#include <sys/types.h>
#include <time.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
],[
    time_t foo = (time_t) timezone;
],[
  ac_cv_declared_timezone=yes
],[
  ac_cv_declared_timezone=no
])])
  if test "$ac_cv_declared_timezone" = "yes"; then
    AC_DEFINE(HAVE_DECLARED_TIMEZONE, 1, [Whether system headers declare timezone])
  fi
])

AC_DEFUN([PHP_EBCDIC],[
  AC_CACHE_CHECK([whether system uses EBCDIC],ac_cv_ebcdic,[
  AC_TRY_RUN( [
int main(void) { 
  return (unsigned char)'A' != (unsigned char)0xC1; 
} 
],[
  ac_cv_ebcdic=yes
],[
  ac_cv_ebcdic=no
],[
  ac_cv_ebcdic=no
])])
  if test "$ac_cv_ebcdic" = "yes"; then
    AC_DEFINE(CHARSET_EBCDIC,1, [Define if system uses EBCDIC])
  fi
])

dnl Some systems, notably Solaris, cause getcwd() or realpath to fail if a
dnl component of the path has execute but not read permissions
AC_DEFUN([PHP_BROKEN_GETCWD],[
  AC_MSG_CHECKING([for broken getcwd])
  os=`uname -sr 2>/dev/null`
  case $os in
    SunOS*[)]
	  AC_DEFINE(HAVE_BROKEN_GETCWD,1, [Define if system has broken getcwd])
	  AC_MSG_RESULT([yes]);;
	*[)]
	  AC_MSG_RESULT([no]);;
  esac
])

AC_DEFUN([PHP_BROKEN_GLIBC_FOPEN_APPEND],[
  AC_MSG_CHECKING([for broken libc stdio])
  AC_CACHE_VAL(have_broken_glibc_fopen_append,[
  AC_TRY_RUN([
#include <stdio.h>
int main(int argc, char *argv[])
{
  FILE *fp;
  long position;
  char *filename = "/tmp/phpglibccheck";
  
  fp = fopen(filename, "w");
  if (fp == NULL) {
	  perror("fopen");
	  exit(2);
  }
  fputs("foobar", fp);
  fclose(fp);

  fp = fopen(filename, "a+");
  position = ftell(fp);
  fclose(fp);
  unlink(filename);
  if (position == 0)
	return 1;
  return 0;
}
],
[have_broken_glibc_fopen_append=no],
[have_broken_glibc_fopen_append=yes ],
AC_TRY_COMPILE([
#include <features.h>
],[
#if !__GLIBC_PREREQ(2,2)
choke me
#endif
],
[have_broken_glibc_fopen_append=yes],
[have_broken_glibc_fopen_append=no ])
)])

  if test "$have_broken_glibc_fopen_append" = "yes"; then
	AC_MSG_RESULT(yes)
	AC_DEFINE(HAVE_BROKEN_GLIBC_FOPEN_APPEND,1, [Define if your glibc borks on fopen with mode a+])
  else
	AC_MSG_RESULT(no)
  fi
])


AC_DEFUN([PHP_FOPENCOOKIE],[
	AC_CHECK_FUNC(fopencookie, [ have_glibc_fopencookie=yes ])

	if test "$have_glibc_fopencookie" = "yes" ; then
	  	dnl this comes in two flavors:
      dnl newer glibcs (since 2.1.2 ? )
      dnl have a type called cookie_io_functions_t
		  AC_TRY_COMPILE([ #define _GNU_SOURCE
                       #include <stdio.h>
									   ],
	                   [ cookie_io_functions_t cookie; ],
                     [ have_cookie_io_functions_t=yes ],
										 [] )

      if test "$have_cookie_io_functions_t" = "yes" ; then
        cookie_io_functions_t=cookie_io_functions_t
        have_fopen_cookie=yes

		dnl even newer glibcs have a different seeker definition...

		AC_TRY_RUN([
#define _GNU_SOURCE
#include <stdio.h>

struct cookiedata {
	__off64_t pos;
};

__ssize_t reader(void *cookie, char *buffer, size_t size)
{ return size; }
__ssize_t writer(void *cookie, const char *buffer, size_t size)
{ return size; }
int closer(void *cookie)
{ return 0; }
int seeker(void *cookie, __off64_t *position, int whence)
{ ((struct cookiedata*)cookie)->pos = *position; return 0; }

cookie_io_functions_t funcs = {reader, writer, seeker, closer};

main() {
  struct cookiedata g = { 0 };
  FILE *fp = fopencookie(&g, "r", funcs);

  if (fp && fseek(fp, 8192, SEEK_SET) == 0 && g.pos == 8192)
	  exit(0);
  exit(1);
}

					   ],
					   [ cookie_io_functions_use_off64_t=yes ],
					   [ ] )
		
      else
  	    dnl older glibc versions (up to 2.1.2 ?)
        dnl call it _IO_cookie_io_functions_t
		    AC_TRY_COMPILE([ #define _GNU_SOURCE
                       #include <stdio.h>
									   ],
	                   [ _IO_cookie_io_functions_t cookie; ],
                     [ have_IO_cookie_io_functions_t=yes ],
										 [] )
		    if test "$have_cookie_io_functions_t" = "yes" ; then
              cookie_io_functions_t=_IO_cookie_io_functions_t
              have_fopen_cookie=yes
		    fi
      fi

      if test "$have_fopen_cookie" = "yes" ; then
        AC_DEFINE(HAVE_FOPENCOOKIE, 1, [ ])
        AC_DEFINE_UNQUOTED(COOKIE_IO_FUNCTIONS_T, $cookie_io_functions_t, [ ])
		if test "$cookie_io_functions_use_off64_t" = "yes" ; then
          AC_DEFINE(COOKIE_SEEKER_USES_OFF64_T, 1, [ ])
		fi
      fi      

  	fi
])


dnl
dnl PHP_CHECK_LIBRARY(library, function [, action-found [, action-not-found [, extra-libs]]])
dnl
dnl Wrapper for AC_CHECK_LIB
dnl
AC_DEFUN([PHP_CHECK_LIBRARY], [
  save_old_LDFLAGS=$LDFLAGS
  ac_stuff="$5"
  
  save_ext_shared=$ext_shared
  ext_shared=yes
  PHP_EVAL_LIBLINE([$]ac_stuff, LDFLAGS)
  AC_CHECK_LIB([$1],[$2],[
    LDFLAGS=$save_old_LDFLAGS
    ext_shared=$save_ext_shared
    $3
  ],[
    LDFLAGS=$save_old_LDFLAGS
    ext_shared=$save_ext_shared
    unset ac_cv_func_$1
    $4
  ])dnl
])

dnl
dnl PHP_CHECK_FRAMEWORK(framework, function [, action-found [, action-not-found ]])
dnl
dnl El cheapo wrapper for AC_CHECK_LIB
dnl
AC_DEFUN([PHP_CHECK_FRAMEWORK], [
  save_old_LDFLAGS=$LDFLAGS
  LDFLAGS="-framework $1 $LDFLAGS"
  dnl supplying "c" to AC_CHECK_LIB is technically cheating, but
  dnl rewriting AC_CHECK_LIB is overkill and this only affects
  dnl the "checking.." output anyway.
  AC_CHECK_LIB(c,[$2],[
    LDFLAGS=$save_old_LDFLAGS
    $3
  ],[
    LDFLAGS=$save_old_LDFLAGS
    $4
  ])
])

dnl 
dnl PHP_SETUP_OPENSSL(shared-add [, action-found [, action-not-found]])
dnl
dnl Common setup macro for openssl
dnl
AC_DEFUN([PHP_SETUP_OPENSSL],[
  found_openssl=no
  unset OPENSSL_INCDIR
  unset OPENSSL_LIBDIR

  dnl First try to find pkg-config
  if test -z "$PKG_CONFIG"; then
    AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
  fi

  dnl If pkg-config is found try using it
  if test "$PHP_OPENSSL" = "yes" && test -x "$PKG_CONFIG" && $PKG_CONFIG --exists openssl; then
    if $PKG_CONFIG --atleast-version=0.9.6 openssl; then
      found_openssl=yes
      OPENSSL_LIBS=`$PKG_CONFIG --libs openssl`
      OPENSSL_INCS=`$PKG_CONFIG --cflags-only-I openssl`
      OPENSSL_INCDIR=`$PKG_CONFIG --variable=includedir openssl`
    else
      AC_MSG_ERROR([OpenSSL version 0.9.6 or greater required.])
    fi

    if test -n "$OPENSSL_LIBS" && test -n "$OPENSSL_INCS"; then
      PHP_EVAL_LIBLINE($OPENSSL_LIBS, $1)
      PHP_EVAL_INCLINE($OPENSSL_INCS)
    fi

  else 

    dnl If pkg-config fails for some reason, revert to the old method
    if test "$PHP_OPENSSL" = "yes"; then
      PHP_OPENSSL="/usr/local/ssl /usr/local /usr /usr/local/openssl"
    fi

    for i in $PHP_OPENSSL; do
      if test -r $i/include/openssl/evp.h; then
        OPENSSL_INCDIR=$i/include
      fi
      if test -r $i/lib/libssl.a -o -r $i/lib/libssl.$SHLIB_SUFFIX_NAME; then
        OPENSSL_LIBDIR=$i/lib
      fi
      test -n "$OPENSSL_INCDIR" && test -n "$OPENSSL_LIBDIR" && break
    done

    if test -z "$OPENSSL_INCDIR"; then
      AC_MSG_ERROR([Cannot find OpenSSL's <evp.h>])
    fi

    if test -z "$OPENSSL_LIBDIR"; then
      AC_MSG_ERROR([Cannot find OpenSSL's libraries])
    fi

    old_CPPFLAGS=$CPPFLAGS
    CPPFLAGS=-I$OPENSSL_INCDIR
    AC_MSG_CHECKING([for OpenSSL version])
    AC_EGREP_CPP(yes,[
#include <openssl/opensslv.h>
#if OPENSSL_VERSION_NUMBER >= 0x0090600fL
  yes
#endif
    ],[
      AC_MSG_RESULT([>= 0.9.6])
    ],[
      AC_MSG_ERROR([OpenSSL version 0.9.6 or greater required.])
    ])
    CPPFLAGS=$old_CPPFLAGS

    PHP_ADD_INCLUDE($OPENSSL_INCDIR)
  
    PHP_CHECK_LIBRARY(crypto, CRYPTO_free, [
      PHP_ADD_LIBRARY(crypto,,$1)
    ],[
      AC_MSG_ERROR([libcrypto not found!])
    ],[
      -L$OPENSSL_LIBDIR
    ])

    old_LIBS=$LIBS
    LIBS="$LIBS -lcrypto"
    PHP_CHECK_LIBRARY(ssl, SSL_CTX_set_ssl_version, [
      found_openssl=yes
    ],[
      AC_MSG_ERROR([libssl not found!])
    ],[
      -L$OPENSSL_LIBDIR
    ])
    LIBS=$old_LIBS
    PHP_ADD_LIBRARY(ssl,,$1)

    PHP_ADD_LIBPATH($OPENSSL_LIBDIR, $1)
  fi

  dnl For apache 1.3.x static build
  OPENSSL_INCDIR_OPT=-I$OPENSSL_INCDIR
  AC_SUBST(OPENSSL_INCDIR_OPT)

  if test "$found_openssl" = "yes"; then
ifelse([$2],[],:,[$2])
ifelse([$3],[],,[else $3])
  fi
])

dnl 
dnl PHP_SETUP_ICONV(shared-add [, action-found [, action-not-found]])
dnl
dnl Common setup macro for iconv
dnl
AC_DEFUN([PHP_SETUP_ICONV], [
  found_iconv=no
  unset ICONV_DIR

  dnl
  dnl Check libc first if no path is provided in --with-iconv
  dnl
  if test "$PHP_ICONV" = "yes"; then
    AC_CHECK_FUNC(iconv, [
      PHP_DEFINE(HAVE_ICONV)
      found_iconv=yes
    ],[
      AC_CHECK_FUNC(libiconv,[
        PHP_DEFINE(HAVE_LIBICONV)
        found_iconv=yes
      ])
    ])
  fi

  dnl
  dnl Check external libs for iconv funcs
  dnl
  if test "$found_iconv" = "no"; then

    for i in $PHP_ICONV /usr/local /usr; do
      if test -r $i/include/giconv.h; then
        AC_DEFINE(HAVE_GICONV_H, 1, [ ])
        ICONV_DIR=$i
        iconv_lib_name=giconv
        break
      elif test -r $i/include/iconv.h; then
        ICONV_DIR=$i
        iconv_lib_name=iconv
        break
      fi
    done

    if test -z "$ICONV_DIR"; then
      AC_MSG_ERROR([Please specify the install prefix of iconv with --with-iconv=<DIR>])
    fi
  
    if test -f $ICONV_DIR/lib/lib$iconv_lib_name.a ||
       test -f $ICONV_DIR/lib/lib$iconv_lib_name.$SHLIB_SUFFIX_NAME
    then
      PHP_CHECK_LIBRARY($iconv_lib_name, libiconv, [
        found_iconv=yes
        PHP_DEFINE(HAVE_LIBICONV)
      ], [
        PHP_CHECK_LIBRARY($iconv_lib_name, iconv, [
          found_iconv=yes
          PHP_DEFINE(HAVE_ICONV)
        ], [], [
          -L$ICONV_DIR/lib
        ])
      ], [
        -L$ICONV_DIR/lib
      ])
    fi
  fi

  if test "$found_iconv" = "yes"; then
    if test -n "$ICONV_DIR"; then
      AC_DEFINE(HAVE_ICONV, 1, [ ])
      PHP_ADD_LIBRARY_WITH_PATH($iconv_lib_name, $ICONV_DIR/lib, $1)
      PHP_ADD_INCLUDE($ICONV_DIR/include)
    fi
    $2
ifelse([$3],[],,[else $3])
  fi
])

dnl 
dnl PHP_SETUP_LIBXML(shared-add [, action-found [, action-not-found]])
dnl
dnl Common setup macro for libxml
dnl
AC_DEFUN([PHP_SETUP_LIBXML], [

  for i in $PHP_LIBXML_DIR /usr/local /usr; do
    if test -x "$i/bin/xml2-config"; then
      XML2_CONFIG="$i/bin/xml2-config"
      break
    fi
  done

  if test -x "$XML2_CONFIG"; then
    libxml_full_version=`$XML2_CONFIG --version`
    ac_IFS=$IFS
    IFS="."
    set $libxml_full_version
    IFS=$ac_IFS
    LIBXML_VERSION=`expr [$]1 \* 1000000 + [$]2 \* 1000 + [$]3`
    if test "$LIBXML_VERSION" -ge "2005010"; then
      LIBXML_LIBS=`$XML2_CONFIG --libs`
      LIBXML_INCS=`$XML2_CONFIG --cflags`
      PHP_EVAL_LIBLINE($LIBXML_LIBS, $1)
      PHP_EVAL_INCLINE($LIBXML_INCS)

      dnl Check that build works with given libs
      AC_CACHE_CHECK(whether libxml build works, php_cv_libxml_build_works, [
        PHP_TEST_BUILD(xmlInitParser,
        [
          php_cv_libxml_build_works=yes
        ], [
          AC_MSG_RESULT(no)
          AC_MSG_ERROR([build test failed.  Please check the config.log for details.])
        ], [
          [$]$1
        ])
      ])
      if test "$php_cv_libxml_build_works" = "yes"; then
        AC_DEFINE(HAVE_LIBXML, 1, [ ])
      fi
      $2
    else
      AC_MSG_ERROR([libxml2 version 2.5.10 or greater required.])
    fi
ifelse([$3],[],,[else $3])
  fi
])

AC_DEFUN([PHP_DEF_HAVE],[AC_DEFINE([HAVE_]translit($1,a-z_-,A-Z__), 1, [ ])])

dnl
dnl PHP_CHECK_FUNC_LIB(func, libs)
dnl This macro checks whether 'func' or '__func' exists
dnl in the specified library.
dnl Defines HAVE_func and HAVE_library if found and adds the library to LIBS.
dnl This should be called in the ACTION-IF-NOT-FOUND part of PHP_CHECK_FUNC
dnl

dnl autoconf undefines the builtin "shift" :-(
dnl If possible, we use the builtin shift anyway, otherwise we use
dnl the ubercool definition I have tested so far with FreeBSD/GNU m4
ifdef([builtin],[builtin(define, phpshift, [builtin(shift, $@)])],[
define([phpshift],[ifelse(index([$@],[,]),-1,,[substr([$@],incr(index([$@],[,])))])])
])

AC_DEFUN([PHP_CHECK_FUNC_LIB],[
  ifelse($2,,:,[
  unset ac_cv_lib_$2[]_$1
  unset ac_cv_lib_$2[]___$1
  unset found
  AC_CHECK_LIB($2, $1, [found=yes], [
    AC_CHECK_LIB($2, __$1, [found=yes], [found=no])
  ])

  if test "$found" = "yes"; then
    ac_libs=$LIBS
    LIBS="$LIBS -l$2"
    AC_TRY_RUN([main() { return (0); }],[found=yes],[found=no],[found=no])
    LIBS=$ac_libs
  fi

  if test "$found" = "yes"; then
    PHP_ADD_LIBRARY($2)
    PHP_DEF_HAVE($1)
    PHP_DEF_HAVE(lib$2)
    ac_cv_func_$1=yes
  else
    PHP_CHECK_FUNC_LIB($1,phpshift(phpshift($@)))
  fi
  ])
])

dnl
dnl PHP_CHECK_FUNC(func, ...)
dnl This macro checks whether 'func' or '__func' exists
dnl in the default libraries and as a fall back in the specified library.
dnl Defines HAVE_func and HAVE_library if found and adds the library to LIBS.
dnl
AC_DEFUN([PHP_CHECK_FUNC],[
  unset ac_cv_func_$1
  unset ac_cv_func___$1
  unset found
  
  AC_CHECK_FUNC($1, [found=yes],[ AC_CHECK_FUNC(__$1,[found=yes],[found=no]) ])

  case $found in
  yes[)] 
    PHP_DEF_HAVE($1)
    ac_cv_func_$1=yes
  ;;
  ifelse($#,1,,[
    *[)] PHP_CHECK_FUNC_LIB($@) ;;
  ])
  esac
])

dnl
dnl PHP_AP_EXTRACT_VERSION(/path/httpd)
dnl This macro is used to get a comparable
dnl version for apache1/2.
dnl
AC_DEFUN([PHP_AP_EXTRACT_VERSION],[
  ac_output=`$1 -v 2>&1`
  ac_IFS=$IFS
IFS="- /.
"
  set $ac_output
  IFS=$ac_IFS

  APACHE_VERSION=`expr [$]4 \* 1000000 + [$]5 \* 1000 + [$]6`
])

dnl
dnl PHP_TEST_BUILD(function, action-if-ok, action-if-not-ok [, extra-libs [, extra-source]])
dnl This macro checks whether build works and given function exists.
dnl
AC_DEFUN(PHP_TEST_BUILD, [
  old_LIBS=$LIBS
  LIBS="$4 $LIBS"
  AC_TRY_RUN([
    $5
    char $1();
    int main() {
      $1();
      return 0;
    }
  ], [
    LIBS=$old_LIBS
    $2
  ],[
    LIBS=$old_LIBS
    $3
  ],[
    LIBS=$old_LIBS
  ])
])