aboutsummaryrefslogtreecommitdiff
path: root/mesalib/configure.ac
blob: b5250f3214817cd01e13ec7693f6e9091a00d0c0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
dnl Process this file with autoconf to create configure.

AC_PREREQ([2.60])

dnl Tell the user about autoconf.html in the --help output
m4_divert_once([HELP_END], [
See docs/autoconf.html for more details on the options for Mesa.])

AC_INIT([Mesa], [8.1.0],
    [https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa])
AC_CONFIG_AUX_DIR([bin])
AC_CANONICAL_HOST
AM_INIT_AUTOMAKE([foreign])

dnl http://people.gnome.org/~walters/docs/build-api.txt
dnl We don't support srcdir != builddir.
echo \#buildapi-variable-no-builddir >/dev/null

# Support silent build rules, requires at least automake-1.11. Disable
# by either passing --disable-silent-rules to configure or passing V=1
# to make
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

m4_ifdef([AM_PROG_AR], [AM_PROG_AR])

LT_PREREQ([2.2])
LT_INIT([disable-static])

dnl Save user CFLAGS and CXXFLAGS so one can override the default ones
USER_CFLAGS="$CFLAGS"
USER_CXXFLAGS="$CXXFLAGS"

dnl Versions for external dependencies
LIBDRM_REQUIRED=2.4.24
LIBDRM_RADEON_REQUIRED=2.4.31
LIBDRM_INTEL_REQUIRED=2.4.37
LIBDRM_NVVIEUX_REQUIRED=2.4.33
LIBDRM_NOUVEAU_REQUIRED=2.4.33
DRI2PROTO_REQUIRED=2.6
GLPROTO_REQUIRED=1.4.14
LIBDRM_XORG_REQUIRED=2.4.24
LIBKMS_XORG_REQUIRED=1.0.0

dnl Check for progs
AC_PROG_CPP
AC_PROG_CC
AC_PROG_CXX
AM_PROG_CC_C_O
AM_PROG_AS
AC_CHECK_PROGS([MAKE], [gmake make])
AC_CHECK_PROGS([PYTHON2], [python2 python])
AC_PROG_SED
AC_PROG_MKDIR_P
AC_PATH_PROG([MKDEP], [makedepend])

if test "x$MKDEP" = "x"; then
    AC_MSG_ERROR([makedepend is required to build Mesa])
fi

AC_PROG_YACC
AC_PATH_PROG([YACC_INST], $YACC)
if test ! -f "$srcdir/src/glsl/glcpp/glcpp-parse.y"; then
    if test -z "$YACC_INST"; then
        AC_MSG_ERROR([yacc not found - unable to compile glcpp-parse.y])
    fi
fi
AC_PROG_LEX

AC_PATH_PROG([PERL], [perl])

AC_CHECK_PROG(INDENT, indent, indent, cat)
if test "x$INDENT" != "xcat"; then
    AC_SUBST(INDENT_FLAGS, '-i4 -nut -br -brs -npcs -ce -T GLubyte -T GLbyte -T Bool')
fi

dnl Our fallback install-sh is a symlink to minstall. Use the existing
dnl configuration in that case.
AC_PROG_INSTALL
test "x$INSTALL" = "x$ac_install_sh" && INSTALL='$(MINSTALL)'

dnl We need a POSIX shell for parts of the build. Assume we have one
dnl in most cases.
case "$host_os" in
solaris*)
    # Solaris /bin/sh is too old/non-POSIX compliant
    AC_PATH_PROGS(POSIX_SHELL, [ksh93 ksh sh])
    SHELL="$POSIX_SHELL"
    ;;
esac

dnl clang is mostly GCC-compatible, but its version is much lower,
dnl so we have to check for it.
AC_MSG_CHECKING([if compiling with clang])

AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [[
#ifndef __clang__
       not clang
#endif
]])],
[acv_mesa_CLANG=yes], [acv_mesa_CLANG=no])

AC_MSG_RESULT([$acv_mesa_CLANG])

dnl If we're using GCC, make sure that it is at least version 3.3.0.  Older
dnl versions are explictly not supported.
if test "x$GCC" = xyes -a "x$acv_mesa_CLANG" = xno; then
    AC_MSG_CHECKING([whether gcc version is sufficient])
    major=0
    minor=0

    GCC_VERSION=`$CC -dumpversion`
    if test $? -eq 0; then
        GCC_VERSION_MAJOR=`echo $GCC_VERSION | cut -d. -f1`
        GCC_VERSION_MINOR=`echo $GCC_VERSION | cut -d. -f2`
    fi

    if test $GCC_VERSION_MAJOR -lt 3 -o $GCC_VERSION_MAJOR -eq 3 -a $GCC_VERSION_MINOR -lt 3 ; then
        AC_MSG_RESULT([no])
        AC_MSG_ERROR([If using GCC, version 3.3.0 or later is required.])
    else
        AC_MSG_RESULT([yes])
    fi
fi


MKDEP_OPTIONS=-fdepend
dnl Ask gcc where it's keeping its secret headers
if test "x$GCC" = xyes; then
    for dir in include include-fixed; do
        GCC_INCLUDES=`$CC -print-file-name=$dir`
        if test "x$GCC_INCLUDES" != x && \
           test "$GCC_INCLUDES" != "$dir" && \
           test -d "$GCC_INCLUDES"; then
            MKDEP_OPTIONS="$MKDEP_OPTIONS -I$GCC_INCLUDES"
        fi
    done
fi
AC_SUBST([MKDEP_OPTIONS])

dnl Make sure the pkg-config macros are defined
m4_ifndef([PKG_PROG_PKG_CONFIG],
    [m4_fatal([Could not locate the pkg-config autoconf macros.
  These are usually located in /usr/share/aclocal/pkg.m4. If your macros
  are in a different location, try setting the environment variable
  ACLOCAL="aclocal -I/other/macro/dir" before running autoreconf.])])
PKG_PROG_PKG_CONFIG()

dnl LIB_DIR - library basename
LIB_DIR=`echo $libdir | $SED 's%.*/%%'`
AC_SUBST([LIB_DIR])

dnl Cache LDFLAGS so we can add EXTRA_LIB_PATH and restore it later
_SAVE_LDFLAGS="$LDFLAGS"
AC_ARG_VAR([EXTRA_LIB_PATH],[Extra -L paths for the linker])
AC_SUBST([EXTRA_LIB_PATH])

dnl Cache CPPFLAGS so we can add *_INCLUDES and restore it later
_SAVE_CPPFLAGS="$CPPFLAGS"
AC_ARG_VAR([X11_INCLUDES],[Extra -I paths for X11 headers])
AC_SUBST([X11_INCLUDES])

dnl Compiler macros
DEFINES=""
AC_SUBST([DEFINES])
case "$host_os" in
linux*|*-gnu*|gnu*)
    DEFINES="$DEFINES -D_GNU_SOURCE -DPTHREADS"
    ;;
solaris*)
    DEFINES="$DEFINES -DPTHREADS -DSVR4"
    ;;
cygwin*)
    DEFINES="$DEFINES -DPTHREADS"
    ;;
esac

dnl Add flags for gcc and g++
if test "x$GCC" = xyes; then
    CFLAGS="$CFLAGS -Wall -std=c99"

    # Enable -Werror=implicit-function-declaration and
    # -Werror=missing-prototypes, if available, or otherwise, just
    # -Wmissing-prototypes.  This is particularly useful to avoid
    # generating a loadable driver module that has undefined symbols.
    save_CFLAGS="$CFLAGS"
    AC_MSG_CHECKING([whether $CC supports -Werror=missing-prototypes])
    CFLAGS="$CFLAGS -Werror=implicit-function-declaration"
    CFLAGS="$CFLAGS -Werror=missing-prototypes"
    AC_LINK_IFELSE([AC_LANG_PROGRAM()],
		   AC_MSG_RESULT([yes]),
		   [CFLAGS="$save_CFLAGS -Wmissing-prototypes";
		    AC_MSG_RESULT([no])]);

    # Enable -fvisibility=hidden if using a gcc that supports it
    save_CFLAGS="$CFLAGS"
    AC_MSG_CHECKING([whether $CC supports -fvisibility=hidden])
    VISIBILITY_CFLAGS="-fvisibility=hidden"
    CFLAGS="$CFLAGS $VISIBILITY_CFLAGS"
    AC_LINK_IFELSE([AC_LANG_PROGRAM()], AC_MSG_RESULT([yes]),
		   [VISIBILITY_CFLAGS=""; AC_MSG_RESULT([no])]);

    # Restore CFLAGS; VISIBILITY_CFLAGS are added to it where needed.
    CFLAGS=$save_CFLAGS

    # Work around aliasing bugs - developers should comment this out
    CFLAGS="$CFLAGS -fno-strict-aliasing"

    # gcc's builtin memcmp is slower than glibc's
    # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43052
    CFLAGS="$CFLAGS -fno-builtin-memcmp"
fi
if test "x$GXX" = xyes; then
    CXXFLAGS="$CXXFLAGS -Wall"

    # Enable -fvisibility=hidden if using a gcc that supports it
    save_CXXFLAGS="$CXXFLAGS"
    AC_MSG_CHECKING([whether $CXX supports -fvisibility=hidden])
    VISIBILITY_CXXFLAGS="-fvisibility=hidden"
    CXXFLAGS="$CXXFLAGS $VISIBILITY_CXXFLAGS"
    AC_LANG_PUSH([C++])
    AC_LINK_IFELSE([AC_LANG_PROGRAM()], AC_MSG_RESULT([yes]),
		   [VISIBILITY_CXXFLAGS="" ; AC_MSG_RESULT([no])]);
    AC_LANG_POP([C++])

    # Restore CXXFLAGS; VISIBILITY_CXXFLAGS are added to it where needed.
    CXXFLAGS=$save_CXXFLAGS

    # Work around aliasing bugs - developers should comment this out
    CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"

    # gcc's builtin memcmp is slower than glibc's
    # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43052
    CXXFLAGS="$CXXFLAGS -fno-builtin-memcmp"
fi

dnl even if the compiler appears to support it, using visibility attributes isn't
dnl going to do anything useful currently on cygwin apart from emit lots of warnings
case "$host_os" in
cygwin*)
    VISIBILITY_CFLAGS=""
    VISIBILITY_CXXFLAGS=""
    ;;
esac

AC_SUBST([VISIBILITY_CFLAGS])
AC_SUBST([VISIBILITY_CXXFLAGS])

dnl These should be unnecessary, but let the user set them if they want
AC_ARG_VAR([OPT_FLAGS], [Additional optimization flags for the compiler.
    Default is to use CFLAGS.])
AC_ARG_VAR([ARCH_FLAGS], [Additional architecture specific flags for the
    compiler. Default is to use CFLAGS.])
AC_SUBST([OPT_FLAGS])
AC_SUBST([ARCH_FLAGS])

dnl
dnl Hacks to enable 32 or 64 bit build
dnl
AC_ARG_ENABLE([32-bit],
    [AS_HELP_STRING([--enable-32-bit],
        [build 32-bit libraries @<:@default=auto@:>@])],
    [enable_32bit="$enableval"],
    [enable_32bit=auto]
)
if test "x$enable_32bit" = xyes; then
    if test "x$GCC" = xyes; then
        CFLAGS="$CFLAGS -m32"
        ARCH_FLAGS="$ARCH_FLAGS -m32"
        CCASFLAGS="$CCASFLAGS -m32"
    fi
    if test "x$GXX" = xyes; then
        CXXFLAGS="$CXXFLAGS -m32"
    fi
fi
AC_ARG_ENABLE([64-bit],
    [AS_HELP_STRING([--enable-64-bit],
        [build 64-bit libraries @<:@default=auto@:>@])],
    [enable_64bit="$enableval"],
    [enable_64bit=auto]
)
if test "x$enable_64bit" = xyes; then
    if test "x$GCC" = xyes; then
        CFLAGS="$CFLAGS -m64"
    fi
    if test "x$GXX" = xyes; then
        CXXFLAGS="$CXXFLAGS -m64"
    fi
fi

dnl Can't have static and shared libraries, default to static if user
dnl explicitly requested. If both disabled, set to static since shared
dnl was explicitly requested.
case "x$enable_static$enable_shared" in
xyesyes )
    AC_MSG_WARN([Can't build static and shared libraries, disabling shared])
    enable_shared=no
    ;;
xnono )
    AC_MSG_WARN([Can't disable both static and shared libraries, enabling static])
    enable_static=yes
    ;;
esac

dnl
dnl mklib options
dnl
AC_ARG_VAR([MKLIB_OPTIONS],[Options for the Mesa library script, mklib])
if test "$enable_static" = yes; then
    MKLIB_OPTIONS="$MKLIB_OPTIONS -static"
fi
AC_SUBST([MKLIB_OPTIONS])

dnl
dnl other compiler options
dnl
AC_ARG_ENABLE([debug],
    [AS_HELP_STRING([--enable-debug],
        [use debug compiler flags and macros @<:@default=disabled@:>@])],
    [enable_debug="$enableval"],
    [enable_debug=no]
)
if test "x$enable_debug" = xyes; then
    DEFINES="$DEFINES -DDEBUG"
    if test "x$GCC" = xyes; then
        CFLAGS="$CFLAGS -g"
    fi
    if test "x$GXX" = xyes; then
        CXXFLAGS="$CXXFLAGS -g"
    fi
fi

dnl
dnl library names
dnl
LIB_PREFIX_GLOB='lib'
LIB_VERSION_SEPARATOR='.'
if test "$enable_static" = yes; then
    LIB_EXTENSION='a'
else
    case "$host_os" in
    darwin* )
        LIB_EXTENSION='dylib' ;;
    cygwin* )
        dnl prefix can be 'cyg' or 'lib'
        LIB_PREFIX_GLOB='???'
        LIB_VERSION_SEPARATOR='-'
        LIB_EXTENSION='dll' ;;
    aix* )
        LIB_EXTENSION='a' ;;
    * )
        LIB_EXTENSION='so' ;;
    esac
fi
AC_ARG_WITH([gl-lib-name],
  [AS_HELP_STRING([--with-gl-lib-name@<:@=NAME@:>@],
    [specify GL library name @<:@default=GL@:>@])],
  [GL_LIB=$withval],
  [GL_LIB=GL])
AC_ARG_WITH([glu-lib-name],
  [AS_HELP_STRING([--with-glu-lib-name@<:@=NAME@:>@],
    [specify GLU library name @<:@default=GLU@:>@])],
  [GLU_LIB=$withval],
  [GLU_LIB=GLU])
AC_ARG_WITH([osmesa-lib-name],
  [AS_HELP_STRING([--with-osmesa-lib-name@<:@=NAME@:>@],
    [specify OSMesa library name @<:@default=OSMesa@:>@])],
  [OSMESA_LIB=$withval],
  [OSMESA_LIB=OSMesa])
AS_IF([test "x$GL_LIB" = xyes], [GL_LIB=GL])
AS_IF([test "x$GLU_LIB" = xyes], [GLU_LIB=GLU])
AS_IF([test "x$OSMESA_LIB" = xyes], [OSMESA_LIB=OSMesa])

dnl
dnl Mangled Mesa support
dnl
AC_ARG_ENABLE([mangling],
  [AS_HELP_STRING([--enable-mangling],
    [enable mangled symbols and library name @<:@default=disabled@:>@])],
  [enable_mangling="${enableval}"],
  [enable_mangling=no]
)
if test "x${enable_mangling}" = "xyes" ; then
  DEFINES="${DEFINES} -DUSE_MGL_NAMESPACE"
  GL_LIB="Mangled${GL_LIB}"
  GLU_LIB="Mangled${GLU_LIB}"
  OSMESA_LIB="Mangled${OSMESA_LIB}"
fi
AC_SUBST([GL_LIB])
AC_SUBST([GLU_LIB])
AC_SUBST([OSMESA_LIB])
AM_CONDITIONAL(HAVE_MANGLED_GL, test "x${enable_mangling}" = "xyes")

dnl
dnl potentially-infringing-but-nobody-knows-for-sure stuff
dnl
AC_ARG_ENABLE([texture-float],
    [AS_HELP_STRING([--enable-texture-float],
        [enable floating-point textures and renderbuffers @<:@default=disabled@:>@])],
    [enable_texture_float="$enableval"],
    [enable_texture_float=no]
)
if test "x$enable_texture_float" = xyes; then
    AC_MSG_WARN([Floating-point textures enabled.])
    AC_MSG_WARN([Please consult docs/patents.txt with your lawyer before building Mesa.])
    DEFINES="$DEFINES -DTEXTURE_FLOAT_ENABLED"
fi

GL_LIB_NAME='lib$(GL_LIB).'${LIB_EXTENSION}
GLU_LIB_NAME='lib$(GLU_LIB).'${LIB_EXTENSION}
OSMESA_LIB_NAME='lib$(OSMESA_LIB).'${LIB_EXTENSION}
EGL_LIB_NAME='lib$(EGL_LIB).'${LIB_EXTENSION}
GLESv1_CM_LIB_NAME='lib$(GLESv1_CM_LIB).'${LIB_EXTENSION}
GLESv2_LIB_NAME='lib$(GLESv2_LIB).'${LIB_EXTENSION}
VG_LIB_NAME='lib$(VG_LIB).'${LIB_EXTENSION}
GLAPI_LIB_NAME='lib$(GLAPI_LIB).'${LIB_EXTENSION}

GL_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GL_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
GLU_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLU_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
OSMESA_LIB_GLOB=${LIB_PREFIX_GLOB}'$(OSMESA_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
EGL_LIB_GLOB=${LIB_PREFIX_GLOB}'$(EGL_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
EGL_LIB_GLOB=${LIB_PREFIX_GLOB}'$(EGL_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
GLESv1_CM_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLESv1_CM_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
GLESv2_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLESv2_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
VG_LIB_GLOB=${LIB_PREFIX_GLOB}'$(VG_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
GLAPI_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLAPI_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

AC_SUBST([GL_LIB_NAME])
AC_SUBST([GLU_LIB_NAME])
AC_SUBST([OSMESA_LIB_NAME])
AC_SUBST([EGL_LIB_NAME])
AC_SUBST([GLESv1_CM_LIB_NAME])
AC_SUBST([GLESv2_LIB_NAME])
AC_SUBST([VG_LIB_NAME])
AC_SUBST([GLAPI_LIB_NAME])

AC_SUBST([GL_LIB_GLOB])
AC_SUBST([GLU_LIB_GLOB])
AC_SUBST([OSMESA_LIB_GLOB])
AC_SUBST([EGL_LIB_GLOB])
AC_SUBST([GLESv1_CM_LIB_GLOB])
AC_SUBST([GLESv2_LIB_GLOB])
AC_SUBST([VG_LIB_GLOB])
AC_SUBST([GLAPI_LIB_GLOB])

dnl
dnl Arch/platform-specific settings
dnl
AC_ARG_ENABLE([asm],
    [AS_HELP_STRING([--disable-asm],
        [disable assembly usage @<:@default=enabled on supported plaforms@:>@])],
    [enable_asm="$enableval"],
    [enable_asm=yes]
)
asm_arch=""
MESA_ASM_FILES=""
GLAPI_ASM_SOURCES=""
AC_MSG_CHECKING([whether to enable assembly])
test "x$enable_asm" = xno && AC_MSG_RESULT([no])
# disable if cross compiling on x86/x86_64 since we must run gen_matypes
if test "x$enable_asm" = xyes && test "x$cross_compiling" = xyes; then
    case "$host_cpu" in
    i?86 | x86_64)
        enable_asm=no
        AC_MSG_RESULT([no, cross compiling])
        ;;
    esac
fi
# check for supported arches
if test "x$enable_asm" = xyes; then
    case "$host_cpu" in
    i?86)
        case "$host_os" in
        linux* | *freebsd* | dragonfly* | *netbsd*)
            test "x$enable_64bit" = xyes && asm_arch=x86_64 || asm_arch=x86
            ;;
        esac
        ;;
    x86_64)
        case "$host_os" in
        linux* | *freebsd* | dragonfly* | *netbsd*)
            test "x$enable_32bit" = xyes && asm_arch=x86 || asm_arch=x86_64
            ;;
        esac
        ;;
    powerpc)
        case "$host_os" in
        linux*)
            asm_arch=ppc
            ;;
        esac
        ;;
    sparc*)
        case "$host_os" in
        linux*)
            asm_arch=sparc
            ;;
        esac
        ;;
    esac

    case "$asm_arch" in
    x86)
        DEFINES="$DEFINES -DUSE_X86_ASM -DUSE_MMX_ASM -DUSE_3DNOW_ASM -DUSE_SSE_ASM"
        MESA_ASM_FILES='$(X86_FILES)'
        GLAPI_ASM_SOURCES='$(X86_API)'
        AC_MSG_RESULT([yes, x86])
        ;;
    x86_64)
        DEFINES="$DEFINES -DUSE_X86_64_ASM"
        MESA_ASM_FILES='$(X86_64_FILES)'
        GLAPI_ASM_SOURCES='$(X86-64_API)'
        AC_MSG_RESULT([yes, x86_64])
        ;;
    sparc)
        DEFINES="$DEFINES -DUSE_SPARC_ASM"
        MESA_ASM_FILES='$(SPARC_FILES)'
        GLAPI_ASM_SOURCES='$(SPARC_API)'
        AC_MSG_RESULT([yes, sparc])
        ;;
    *)
        AC_MSG_RESULT([no, platform not supported])
        ;;
    esac
fi
AC_SUBST([MESA_ASM_FILES])
AC_SUBST([GLAPI_ASM_SOURCES])

dnl PIC code macro
MESA_PIC_FLAGS

dnl Check to see if dlopen is in default libraries (like Solaris, which
dnl has it in libc), or if libdl is needed to get it.
AC_CHECK_FUNC([dlopen], [],
    [AC_CHECK_LIB([dl], [dlopen], [DLOPEN_LIBS="-ldl"])])
AC_SUBST([DLOPEN_LIBS])

dnl See if posix_memalign is available
AC_CHECK_FUNC([posix_memalign], [DEFINES="$DEFINES -DHAVE_POSIX_MEMALIGN"])

dnl SELinux awareness.
AC_ARG_ENABLE([selinux],
    [AS_HELP_STRING([--enable-selinux],
        [Build SELinux-aware Mesa @<:@default=disabled@:>@])],
    [MESA_SELINUX="$enableval"],
    [MESA_SELINUX=no])
if test "x$enable_selinux" = "xyes"; then
    AC_CHECK_HEADER([selinux/selinux.h],[],
                    [AC_MSG_ERROR([SELinux headers not found])])
    AC_CHECK_LIB([selinux],[is_selinux_enabled],[],
                 [AC_MSG_ERROR([SELinux library not found])])
    SELINUX_LIBS="-lselinux"
    DEFINES="$DEFINES -DMESA_SELINUX"
fi

dnl Options for APIs
AC_ARG_ENABLE([opengl],
    [AS_HELP_STRING([--disable-opengl],
        [disable support for standard OpenGL API @<:@default=no@:>@])],
    [enable_opengl="$enableval"],
    [enable_opengl=yes])
AC_ARG_ENABLE([gles1],
    [AS_HELP_STRING([--enable-gles1],
        [enable support for OpenGL ES 1.x API @<:@default=no@:>@])],
    [enable_gles1="$enableval"],
    [enable_gles1=no])
AC_ARG_ENABLE([gles2],
    [AS_HELP_STRING([--enable-gles2],
        [enable support for OpenGL ES 2.x API @<:@default=no@:>@])],
    [enable_gles2="$enableval"],
    [enable_gles2=no])
AC_ARG_ENABLE([openvg],
    [AS_HELP_STRING([--enable-openvg],
        [enable support for OpenVG API @<:@default=no@:>@])],
    [enable_openvg="$enableval"],
    [enable_openvg=no])

AC_ARG_ENABLE([dri],
    [AS_HELP_STRING([--enable-dri],
        [enable DRI modules @<:@default=auto@:>@])],
    [enable_dri="$enableval"],
    [enable_dri=auto])
AC_ARG_ENABLE([glx],
    [AS_HELP_STRING([--enable-glx],
        [enable GLX library @<:@default=auto@:>@])],
    [enable_glx="$enableval"],
    [enable_glx=auto])
AC_ARG_ENABLE([osmesa],
    [AS_HELP_STRING([--enable-osmesa],
        [enable OSMesa library @<:@default=auto@:>@])],
    [enable_osmesa="$enableval"],
    [enable_osmesa=auto])
AC_ARG_ENABLE([egl],
    [AS_HELP_STRING([--disable-egl],
        [disable EGL library @<:@default=enabled@:>@])],
    [enable_egl="$enableval"],
    [enable_egl=yes])

AC_ARG_ENABLE([xorg],
    [AS_HELP_STRING([--enable-xorg],
        [enable support for X.Org DDX API @<:@default=no@:>@])],
    [enable_xorg="$enableval"],
    [enable_xorg=no])
AC_ARG_ENABLE([xa],
    [AS_HELP_STRING([--enable-xa],
        [enable build of the XA X Acceleration API @<:@default=no@:>@])],
    [enable_xa="$enableval"],
    [enable_xa=no])
AC_ARG_ENABLE([d3d1x],
    [AS_HELP_STRING([--enable-d3d1x],
        [enable support for Direct3D 10 & 11 low-level API @<:@default=no@:>@])],
    [enable_d3d1x="$enableval"],
    [enable_d3d1x=no])
AC_ARG_ENABLE([gbm],
   [AS_HELP_STRING([--enable-gbm],
         [enable gbm library @<:@default=auto@:>@])],
   [enable_gbm="$enableval"],
   [enable_gbm=auto])

AC_ARG_ENABLE([xvmc],
   [AS_HELP_STRING([--enable-xvmc],
         [enable xvmc library @<:@default=auto@:>@])],
   [enable_xvmc="$enableval"],
   [enable_xvmc=auto])
AC_ARG_ENABLE([vdpau],
   [AS_HELP_STRING([--enable-vdpau],
         [enable vdpau library @<:@default=auto@:>@])],
   [enable_vdpau="$enableval"],
   [enable_vdpau=auto])
AC_ARG_ENABLE([va],
   [AS_HELP_STRING([--enable-va],
         [enable va library @<:@default=auto@:>@])],
   [enable_va="$enableval"],
   [enable_va=auto])
AC_ARG_ENABLE([opencl],
   [AS_HELP_STRING([--enable-opencl],
         [enable OpenCL library @<:@default=no@:>@])],
   [enable_opencl="$enableval"],
   [enable_opencl=no])
AC_ARG_ENABLE([xlib_glx],
    [AS_HELP_STRING([--enable-xlib-glx],
        [make GLX library Xlib-based instead of DRI-based @<:@default=disable@:>@])],
    [enable_xlib_glx="$enableval"],
    [enable_xlib_glx=auto])
AC_ARG_ENABLE([gallium_egl],
    [AS_HELP_STRING([--enable-gallium-egl],
        [enable optional EGL state tracker (not required
         for EGL support in Gallium with OpenGL and OpenGL ES)
         @<:@default=disable@:>@])],
    [enable_gallium_egl="$enableval"],
    [enable_gallium_egl=no])
AC_ARG_ENABLE([gallium_gbm],
    [AS_HELP_STRING([--enable-gallium-gbm],
        [enable optional gbm state tracker (not required for
         gbm support in Gallium)
         @<:@default=auto@:>@])],
    [enable_gallium_gbm="$enableval"],
    [enable_gallium_gbm=auto])

AC_ARG_ENABLE([r600-llvm-compiler],
    [AS_HELP_STRING([--enable-r600-llvm-compiler],
        [Enable experimental LLVM backend for graphics shaders @<:@default=disable@:>@])],
    [enable_r600_llvm="$enableval"],
    [enable_r600_llvm=no])

AC_ARG_ENABLE([gallium_tests],
    [AS_HELP_STRING([--enable-gallium-tests],
        [Enable optional Gallium tests) @<:@default=disable@:>@])],
    [enable_gallium_tests="$enableval"],
    [enable_gallium_tests=no])

# Option for Gallium drivers
GALLIUM_DRIVERS_DEFAULT="r300,r600,svga,swrast"

AC_ARG_WITH([gallium-drivers],
    [AS_HELP_STRING([--with-gallium-drivers@<:@=DIRS...@:>@],
        [comma delimited Gallium drivers list, e.g.
        "i915,nouveau,r300,r600,svga,swrast"
        @<:@default=r300,r600,swrast@:>@])],
    [with_gallium_drivers="$withval"],
    [with_gallium_drivers="$GALLIUM_DRIVERS_DEFAULT"])

# Doing '--without-gallium-drivers' will set this variable to 'no'.  Clear it
# here so that the script doesn't choke on an unknown driver name later.
case "$with_gallium_drivers" in
    yes) with_gallium_drivers="$GALLIUM_DRIVERS_DEFAULT" ;;
    no) with_gallium_drivers='' ;;
esac

if test "x$enable_opengl" = xno -a \
        "x$enable_gles1" = xno -a \
        "x$enable_gles2" = xno -a \
        "x$enable_openvg" = xno -a \
        "x$enable_xorg" = xno -a \
        "x$enable_xa" = xno -a \
        "x$enable_d3d1x" = xno -a \
        "x$enable_xvmc" = xno -a \
        "x$enable_vdpau" = xno -a \
        "x$enable_va" = xno -a \
        "x$enable_opencl" = xno; then
    AC_MSG_ERROR([at least one API should be enabled])
fi

API_DEFINES=""
if test "x$enable_opengl" = xno; then
    API_DEFINES="$API_DEFINES -DFEATURE_GL=0"
else
    API_DEFINES="$API_DEFINES -DFEATURE_GL=1"
fi
if test "x$enable_gles1" = xyes; then
    API_DEFINES="$API_DEFINES -DFEATURE_ES1=1"
fi
if test "x$enable_gles2" = xyes; then
    API_DEFINES="$API_DEFINES -DFEATURE_ES2=1"
fi
AC_SUBST([API_DEFINES])

AC_ARG_ENABLE([shared-glapi],
    [AS_HELP_STRING([--enable-shared-glapi],
        [EXPERIMENTAL.  Enable shared glapi for OpenGL @<:@default=no@:>@])],
    [enable_shared_glapi="$enableval"],
    [enable_shared_glapi=no])

SHARED_GLAPI="0"
if test "x$enable_shared_glapi" = xyes; then
    SHARED_GLAPI="1"
    # libGL will use libglapi for function lookups (IN_DRI_DRIVER means to use
    # the remap table)
    DEFINES="$DEFINES -DIN_DRI_DRIVER"
    SRC_DIRS="$SRC_DIRS mapi/shared-glapi"
fi
AC_SUBST([SHARED_GLAPI])
AM_CONDITIONAL(HAVE_SHARED_GLAPI, test $SHARED_GLAPI = 1)

dnl
dnl Driver configuration. Options are xlib, dri and osmesa right now.
dnl More later: fbdev, ...
dnl
default_driver="xlib"

case "$host_os" in
linux*)
    case "$host_cpu" in
    i*86|x86_64|powerpc*|sparc*|ia64*) default_driver="dri";;
    esac
    ;;
*freebsd* | dragonfly* | *netbsd*)
    case "$host_cpu" in
    i*86|x86_64|powerpc*|sparc*) default_driver="dri";;
    esac
    ;;
esac

if test "x$enable_opengl" = xno; then
    default_driver="no"
fi

AC_ARG_WITH([driver],
    [AS_HELP_STRING([--with-driver=DRIVER], [DEPRECATED])],
    [mesa_driver="$withval"],
    [mesa_driver=auto])
dnl Check for valid option
case "x$mesa_driver" in
xxlib|xdri|xosmesa|xno)
    if test "x$enable_dri" != xauto -o \
            "x$enable_glx" != xauto -o \
            "x$enable_osmesa" != xauto -o \
            "x$enable_xlib_glx" != xauto; then
        AC_MSG_ERROR([--with-driver=$mesa_driver is deprecated])
    fi
    ;;
xauto)
    mesa_driver="$default_driver"
    ;;
*)
    AC_MSG_ERROR([Driver '$mesa_driver' is not a valid option])
    ;;
esac

# map $mesa_driver to APIs
if test "x$enable_dri" = xauto; then
    case "x$mesa_driver" in
    xdri) enable_dri=yes ;;
    *)    enable_dri=no ;;
    esac
fi

if test "x$enable_glx" = xauto; then
    case "x$mesa_driver" in
    xdri|xxlib) enable_glx=yes ;;
    *)          enable_glx=no ;;
    esac
fi

if test "x$enable_osmesa" = xauto; then
    case "x$mesa_driver" in
    xxlib|xosmesa) enable_osmesa=yes ;;
    *)             enable_osmesa=no ;;
    esac
fi

if test "x$enable_xlib_glx" = xauto; then
    case "x$mesa_driver" in
    xxlib) enable_xlib_glx=yes ;;
    *)     enable_xlib_glx=no ;;
    esac
fi

if test "x$enable_glx" = xno; then
    enable_xlib_glx=no
fi

AM_CONDITIONAL(HAVE_DRI, test x"$enable_dri" = xyes)

dnl
dnl Driver specific build directories
dnl

dnl this variable will be prepended to SRC_DIRS and is not exported
CORE_DIRS=""

SRC_DIRS="gtest"
GLU_DIRS="sgi"
GALLIUM_DIRS="auxiliary drivers state_trackers"
GALLIUM_TARGET_DIRS=""
GALLIUM_WINSYS_DIRS="sw"
GALLIUM_DRIVERS_DIRS="galahad trace rbug noop identity"
GALLIUM_STATE_TRACKERS_DIRS=""

# build shared-glapi if enabled for OpenGL or if OpenGL ES is enabled
case "x$enable_shared_glapi$enable_gles1$enable_gles2" in
x*yes*)
    CORE_DIRS="$CORE_DIRS mapi/shared-glapi"
    ;;
esac

# build glapi if OpenGL is enabled
if test "x$enable_opengl" = xyes; then
    CORE_DIRS="$CORE_DIRS mapi/glapi"
fi

# build es1api if OpenGL ES 1.x is enabled
if test "x$enable_gles1" = xyes; then
    CORE_DIRS="$CORE_DIRS mapi/es1api"
fi

# build es2api if OpenGL ES 2.x is enabled
if test "x$enable_gles2" = xyes; then
    CORE_DIRS="$CORE_DIRS mapi/es2api"
fi

# build glsl and mesa if OpenGL or OpenGL ES is enabled
case "x$enable_opengl$enable_gles1$enable_gles2" in
x*yes*)
    CORE_DIRS="mapi/glapi/gen $CORE_DIRS glsl mesa"
    ;;
esac

case "x$enable_glx$enable_xlib_glx" in
xyesyes)
    DRIVER_DIRS="$DRIVER_DIRS x11"
    GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/xlib"
    GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS libgl-xlib"
    GALLIUM_STATE_TRACKERS_DIRS="glx $GALLIUM_STATE_TRACKERS_DIRS"
    HAVE_WINSYS_XLIB="yes"
    ;;
xyesno)
    # DRI-based GLX
    SRC_DIRS="$SRC_DIRS glx"
    ;;
esac

if test "x$enable_dri" = xyes; then
    DRIVER_DIRS="$DRIVER_DIRS dri"

    GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/dri"
    GALLIUM_STATE_TRACKERS_DIRS="dri $GALLIUM_STATE_TRACKERS_DIRS"
    HAVE_ST_DRI="yes"
fi

if test "x$enable_osmesa" = xyes; then
    DRIVER_DIRS="$DRIVER_DIRS osmesa"
fi

AC_SUBST([SRC_DIRS])
AC_SUBST([GLU_DIRS])
AC_SUBST([DRIVER_DIRS])
AC_SUBST([GALLIUM_DIRS])
AC_SUBST([GALLIUM_TARGET_DIRS])
AC_SUBST([GALLIUM_WINSYS_DIRS])
AC_SUBST([GALLIUM_DRIVERS_DIRS])
AC_SUBST([GALLIUM_STATE_TRACKERS_DIRS])
AC_SUBST([MESA_LLVM])

# Check for libdrm
PKG_CHECK_MODULES([LIBDRM], [libdrm >= $LIBDRM_REQUIRED],
                  [have_libdrm=yes], [have_libdrm=no])

if test "x$enable_dri" = xyes; then
    # DRI must be shared, I think
    if test "$enable_static" = yes; then
        AC_MSG_ERROR([Can't use static libraries for DRI drivers])
    fi

    # not a hard requirement as swrast does not depend on it
    if test "x$have_libdrm" = xyes; then
        DRI_PC_REQ_PRIV="libdrm >= $LIBDRM_REQUIRED"
    fi
fi

dnl
dnl Find out if X is available. The variable have_x is set if libX11 is
dnl found to mimic AC_PATH_XTRA.
dnl
if test -n "$PKG_CONFIG"; then
    AC_MSG_CHECKING([pkg-config files for X11 are available])
    PKG_CHECK_EXISTS([x11],[
        x11_pkgconfig=yes
        have_x=yes
        ],[
        x11_pkgconfig=no
    ])
    AC_MSG_RESULT([$x11_pkgconfig])
else
    x11_pkgconfig=no
fi
dnl Use the autoconf macro if no pkg-config files
if test "$x11_pkgconfig" = yes; then
    PKG_CHECK_MODULES([X11], [x11])
else
    AC_PATH_XTRA
    test -z "$X11_CFLAGS" && X11_CFLAGS="$X_CFLAGS"
    test -z "$X11_LIBS" && X11_LIBS="$X_LIBS -lX11"
    AC_SUBST([X11_CFLAGS])
    AC_SUBST([X11_LIBS])
fi

dnl Try to tell the user that the --x-* options are only used when
dnl pkg-config is not available. This must be right after AC_PATH_XTRA.
m4_divert_once([HELP_BEGIN],
[These options are only used when the X libraries cannot be found by the
pkg-config utility.])

dnl We need X for xlib and dri, so bomb now if it's not found
if test "x$enable_glx" = xyes -a "x$no_x" = xyes; then
    AC_MSG_ERROR([X11 development libraries needed for GLX])
fi

if test "x$enable_glx" = xyes; then
    DEFINES="$DEFINES -DUSE_XCB"
fi

dnl Direct rendering or just indirect rendering
case "$host_os" in
gnu*)
    dnl Disable by default on GNU/Hurd
    driglx_direct_default="no"
    ;;
cygwin*)
    dnl Disable by default on cygwin
    driglx_direct_default="no"
    ;;
*)
    driglx_direct_default="yes"
    ;;
esac
AC_ARG_ENABLE([driglx-direct],
    [AS_HELP_STRING([--disable-driglx-direct],
        [enable direct rendering in GLX and EGL for DRI \
            @<:@default=auto@:>@])],
    [driglx_direct="$enableval"],
    [driglx_direct="$driglx_direct_default"])

dnl
dnl libGL configuration per driver
dnl
case "x$enable_glx$enable_xlib_glx" in
xyesyes)
    # Xlib-based GLX
    if test "$x11_pkgconfig" = yes; then
        PKG_CHECK_MODULES([XLIBGL], [x11 xext])
        GL_PC_REQ_PRIV="x11 xext"
        X11_INCLUDES="$X11_INCLUDES $XLIBGL_CFLAGS"
        GL_LIB_DEPS="$XLIBGL_LIBS"
    else
        # should check these...
        X11_INCLUDES="$X11_INCLUDES $X_CFLAGS"
        GL_LIB_DEPS="$X_LIBS -lX11 -lXext"
        GL_PC_LIB_PRIV="$GL_LIB_DEPS"
        GL_PC_CFLAGS="$X11_INCLUDES"
    fi
    GL_LIB_DEPS="$GL_LIB_DEPS $SELINUX_LIBS -lm -lpthread $DLOPEN_LIBS"
    GL_PC_LIB_PRIV="$GL_PC_LIB_PRIV $SELINUX_LIBS -lm -lpthread"
    ;;
xyesno)
    # DRI-based GLX
    PKG_CHECK_MODULES([GLPROTO], [glproto >= $GLPROTO_REQUIRED])
    GL_PC_REQ_PRIV="glproto >= $GLPROTO_REQUIRED"
    if test x"$driglx_direct" = xyes; then
        if test "x$have_libdrm" != xyes; then
            AC_MSG_ERROR([Direct rendering requires libdrm >= $LIBDRM_REQUIRED])
        fi
        PKG_CHECK_MODULES([DRI2PROTO], [dri2proto >= $DRI2PROTO_REQUIRED])
        GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV libdrm >= $LIBDRM_REQUIRED dri2proto >= $DRI2PROTO_REQUIRED"
    fi

    # find the DRI deps for libGL
    if test "$x11_pkgconfig" = yes; then
        dri_modules="x11 xext xdamage xfixes x11-xcb xcb-glx"

        # add xf86vidmode if available
        PKG_CHECK_MODULES([XF86VIDMODE], [xxf86vm], HAVE_XF86VIDMODE=yes, HAVE_XF86VIDMODE=no)
        if test "$HAVE_XF86VIDMODE" = yes ; then
            dri_modules="$dri_modules xxf86vm"
        fi

        PKG_CHECK_MODULES([DRIGL], [$dri_modules])
        GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV $dri_modules"
        X11_INCLUDES="$X11_INCLUDES $DRIGL_CFLAGS"
        GL_LIB_DEPS="$DRIGL_LIBS"
    else
        # should check these...
        X11_INCLUDES="$X11_INCLUDES $X_CFLAGS"
        if test "x$HAVE_XF86VIDMODE" == xyes; then
           GL_LIB_DEPS="$X_LIBS -lX11 -lXext -lXxf86vm -lXdamage -lXfixes"
	else
           GL_LIB_DEPS="$X_LIBS -lX11 -lXext -lXdamage -lXfixes"
	fi
        GL_PC_LIB_PRIV="$GL_LIB_DEPS"
        GL_PC_CFLAGS="$X11_INCLUDES"

        # XCB can only be used from pkg-config
        PKG_CHECK_MODULES([XCB],[x11-xcb xcb-glx])
        GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV x11-xcb xcb-glx"
        X11_INCLUDES="$X11_INCLUDES $XCB_CFLAGS"
        GL_LIB_DEPS="$GL_LIB_DEPS $XCB_LIBS"
    fi

    # Check to see if the xcb-glx library is new enough to support
    # GLX_ARB_create_context.  This bit of hackery is necessary until XCB 1.8
    # is released.
    save_CPPFLAGS="$CPPFLAGS"
    save_LDFLAGS="$LDFLAGS"
    CPPFLAGS="$CPPFLAGS $X11_INCLUDES"
    LDFLAGS="$LDFLAGS $GL_LIB_DEPS"
    AC_CHECK_LIB(xcb-glx, xcb_glx_create_context_attribs_arb_checked,
        [HAVE_XCB_GLX_CREATE_CONTEXT=yes],
        [HAVE_XCB_GLX_CREATE_CONTEXT=no])
    CPPFLAGS="$save_CPPFLAGS"
    LDFLAGS="$save_LDFLAGS"

    if test x$HAVE_XCB_GLX_CREATE_CONTEXT = xyes; then
        X11_INCLUDES="$X11_INCLUDES -DHAVE_XCB_GLX_CREATE_CONTEXT"
    fi

    # need DRM libs, -lpthread, etc.
    GL_LIB_DEPS="$GL_LIB_DEPS $LIBDRM_LIBS -lm -lpthread $DLOPEN_LIBS"
    GL_PC_LIB_PRIV="-lm -lpthread $DLOPEN_LIBS"
    ;;
esac

# This is outside the case (above) so that it is invoked even for non-GLX
# builds.
AM_CONDITIONAL(HAVE_XCB_GLX_CREATE_CONTEXT,
    test x$HAVE_XCB_GLX_CREATE_CONTEXT = xyes)
AM_CONDITIONAL(HAVE_XF86VIDMODE, test "x$HAVE_XF86VIDMODE" = xyes)

GLESv1_CM_LIB_DEPS="$LIBDRM_LIBS -lm -lpthread $DLOPEN_LIBS"
GLESv1_CM_PC_LIB_PRIV="-lm -lpthread $DLOPEN_LIBS"
GLESv2_LIB_DEPS="$LIBDRM_LIBS -lm -lpthread $DLOPEN_LIBS"
GLESv2_PC_LIB_PRIV="-lm -lpthread $DLOPEN_LIBS"

AC_SUBST([GL_LIB_DEPS])
AC_SUBST([GL_PC_REQ_PRIV])
AC_SUBST([GL_PC_LIB_PRIV])
AC_SUBST([GL_PC_CFLAGS])
AC_SUBST([DRI_PC_REQ_PRIV])
AC_SUBST([GLESv1_CM_LIB_DEPS])
AC_SUBST([GLESv1_CM_PC_LIB_PRIV])
AC_SUBST([GLESv2_LIB_DEPS])
AC_SUBST([GLESv2_PC_LIB_PRIV])

GLAPI_LIB_DEPS="-lpthread $SELINUX_LIBS"
AC_SUBST([GLAPI_LIB_DEPS])


dnl Setup default DRI CFLAGS
DRI_LIB_DEPS='$(TOP)/src/mesa/libmesa.a'
MESA_MODULES='$(TOP)/src/mesa/libmesa.a'

if test "x$enable_dri" = xyes && test "x$driglx_direct" = xyes ; then
    DRI_LIB_DEPS="-L\$(TOP)/\$(LIB_DIR) -ldricore$VERSION"
    MESA_MODULES="\$(TOP)/\$(LIB_DIR)/libdricore$VERSION.so"
    HAVE_DRICORE=yes
fi
AM_CONDITIONAL(HAVE_DRICORE, test x$HAVE_DRICORE = xyes)
AC_SUBST([MESA_MODULES])

AC_SUBST([HAVE_XF86VIDMODE])

dnl
dnl More GLX setup
dnl
case "x$enable_glx$enable_xlib_glx" in
xyesyes)
    DEFINES="$DEFINES -DUSE_XSHM"
    ;;
xyesno)
    DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING"
    if test "x$driglx_direct" = xyes; then
        DEFINES="$DEFINES -DGLX_DIRECT_RENDERING"
    fi
    ;;
esac

dnl
dnl TLS detection
dnl

AC_ARG_ENABLE([glx-tls],
    [AS_HELP_STRING([--enable-glx-tls],
        [enable TLS support in GLX @<:@default=disabled@:>@])],
    [GLX_USE_TLS="$enableval"],
    [GLX_USE_TLS=no])
AC_SUBST(GLX_TLS, ${GLX_USE_TLS})

AS_IF([test "x$GLX_USE_TLS" = xyes],
      [DEFINES="${DEFINES} -DGLX_USE_TLS -DPTHREADS"])

dnl
dnl More DRI setup
dnl
dnl Directory for DRI drivers
AC_ARG_WITH([dri-driverdir],
    [AS_HELP_STRING([--with-dri-driverdir=DIR],
        [directory for the DRI drivers @<:@${libdir}/dri@:>@])],
    [DRI_DRIVER_INSTALL_DIR="$withval"],
    [DRI_DRIVER_INSTALL_DIR='${libdir}/dri'])
AC_SUBST([DRI_DRIVER_INSTALL_DIR])
dnl Extra search path for DRI drivers
AC_ARG_WITH([dri-searchpath],
    [AS_HELP_STRING([--with-dri-searchpath=DIRS...],
        [semicolon delimited DRI driver search directories @<:@${libdir}/dri@:>@])],
    [DRI_DRIVER_SEARCH_DIR="$withval"],
    [DRI_DRIVER_SEARCH_DIR='${DRI_DRIVER_INSTALL_DIR}'])
AC_SUBST([DRI_DRIVER_SEARCH_DIR])
dnl Which drivers to build - default is chosen by platform
AC_ARG_WITH([dri-drivers],
    [AS_HELP_STRING([--with-dri-drivers@<:@=DIRS...@:>@],
        [comma delimited DRI drivers list, e.g.
        "swrast,i965,radeon" @<:@default=auto@:>@])],
    [with_dri_drivers="$withval"],
    [with_dri_drivers=yes])
if test "x$with_dri_drivers" = x; then
    with_dri_drivers=no
fi

dnl If $with_dri_drivers is yes, directories will be added through
dnl platform checks
DRI_DIRS=""
case "$with_dri_drivers" in
no) ;;
yes)
    # classic DRI drivers require FEATURE_GL to build
    if test "x$enable_opengl" = xyes; then
        DRI_DIRS="yes"
    fi
    ;;
*)
    # verify the requested driver directories exist
    dri_drivers=`IFS=', '; echo $with_dri_drivers`
    for driver in $dri_drivers; do
        test -d "$srcdir/src/mesa/drivers/dri/$driver" || \
            AC_MSG_ERROR([DRI driver directory '$driver' doesn't exist])
    done
    DRI_DIRS="$dri_drivers"
    if test -n "$DRI_DIRS" -a "x$enable_opengl" != xyes; then
        AC_MSG_ERROR([--with-dri-drivers requires OpenGL])
    fi
    ;;
esac

dnl Set DRI_DIRS, DEFINES and LIB_DEPS
if test "x$enable_dri" = xyes; then
    # Platform specific settings and drivers to build
    case "$host_os" in
    linux*)
        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"
        DEFINES="$DEFINES -DHAVE_ALIAS"

        case "$host_cpu" in
        x86_64)
            if test "x$DRI_DIRS" = "xyes"; then
                DRI_DIRS="i915 i965 nouveau r200 radeon swrast"
            fi
            ;;
        powerpc*)
            # Build only the drivers for cards that exist on PowerPC.
            if test "x$DRI_DIRS" = "xyes"; then
                DRI_DIRS="r200 radeon swrast"
            fi
            ;;
        sparc*)
            # Build only the drivers for cards that exist on sparc
            if test "x$DRI_DIRS" = "xyes"; then
                DRI_DIRS="r200 radeon swrast"
            fi
            ;;
        esac
        ;;
    freebsd* | dragonfly* | *netbsd*)
        DEFINES="$DEFINES -DPTHREADS -DUSE_EXTERNAL_DXTN_LIB=1"
        DEFINES="$DEFINES -DIN_DRI_DRIVER -DHAVE_ALIAS"

        if test "x$DRI_DIRS" = "xyes"; then
            DRI_DIRS="i915 i965 nouveau r200 radeon swrast"
        fi
        ;;
    gnu*)
        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"
        DEFINES="$DEFINES -DHAVE_ALIAS"
	;;
    solaris*)
        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"
        ;;
    cygwin*)
        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"
        if test "x$DRI_DIRS" = "xyes"; then
            DRI_DIRS="swrast"
        fi
        ;;
    esac

    # default drivers
    if test "x$DRI_DIRS" = "xyes"; then
        DRI_DIRS="i915 i965 nouveau r200 radeon swrast"
    fi

    DRI_DIRS=`echo "$DRI_DIRS" | $SED 's/  */ /g'`

    # Check for expat
    if test "x$enable_dri" = xyes; then
        EXPAT_INCLUDES=""
        EXPAT_LIB=-lexpat
        AC_ARG_WITH([expat],
            [AS_HELP_STRING([--with-expat=DIR],
                [expat install directory])],[
            EXPAT_INCLUDES="-I$withval/include"
            CPPFLAGS="$CPPFLAGS $EXPAT_INCLUDES"
            LDFLAGS="$LDFLAGS -L$withval/$LIB_DIR"
            EXPAT_LIB="-L$withval/$LIB_DIR -lexpat"
            ])
        AC_CHECK_HEADER([expat.h],[],[AC_MSG_ERROR([Expat required for DRI.])])
	save_LIBS="$LIBS"
        AC_CHECK_LIB([expat],[XML_ParserCreate],[],
            [AC_MSG_ERROR([Expat required for DRI.])])
	LIBS="$save_LIBS"
    fi

    # if we are building any dri driver other than swrast ...
    if test -n "$DRI_DIRS" -a x"$DRI_DIRS" != xswrast; then
        # ... libdrm is required
        if test "x$have_libdrm" != xyes; then
            AC_MSG_ERROR([DRI drivers requires libdrm >= $LIBDRM_REQUIRED])
        fi
        # ... and build dricommon
        HAVE_COMMON_DRI=yes
    fi

    # put all the necessary libs together
    DRI_LIB_DEPS="$DRI_LIB_DEPS $SELINUX_LIBS $LIBDRM_LIBS $EXPAT_LIB -lm -lpthread $DLOPEN_LIBS"
fi
AC_SUBST([DRI_DIRS])
AC_SUBST([EXPAT_INCLUDES])
AC_SUBST([DRI_LIB_DEPS])

case $DRI_DIRS in
*i915*|*i965*)
    PKG_CHECK_MODULES([INTEL], [libdrm_intel >= $LIBDRM_INTEL_REQUIRED])

    for d in $(echo $DRI_DIRS | sed 's/,/ /g'); do
        case $d in
        i915)
            HAVE_I915_DRI=yes;
            ;;
        i965)
            HAVE_I965_DRI=yes;
            ;;
        esac
    done

    ;;
esac

case $DRI_DIRS in
*nouveau*)
    PKG_CHECK_MODULES([NOUVEAU], [libdrm_nouveau >= $LIBDRM_NVVIEUX_REQUIRED])
    HAVE_NOUVEAU_DRI=yes;
    ;;
esac

case $DRI_DIRS in
*radeon*|*r200*)
    PKG_CHECK_MODULES([RADEON], [libdrm_radeon >= $LIBDRM_RADEON_REQUIRED])

    for d in $(echo $DRI_DIRS | sed 's/,/ /g'); do
        case $d in
        radeon)
            HAVE_RADEON_DRI=yes;
            ;;
        r200)
            HAVE_R200_DRI=yes;
            ;;
        esac
    done

    ;;
esac

case $DRI_DIRS in
*swrast*)
    HAVE_SWRAST_DRI=yes;
    ;;
esac

AM_CONDITIONAL(HAVE_I915_DRI, test x$HAVE_I915_DRI = xyes)
AM_CONDITIONAL(HAVE_I965_DRI, test x$HAVE_I965_DRI = xyes)
AM_CONDITIONAL(HAVE_NOUVEAU_DRI, test x$HAVE_NOUVEAU_DRI = xyes)
AM_CONDITIONAL(HAVE_R200_DRI, test x$HAVE_R200_DRI = xyes)
AM_CONDITIONAL(HAVE_RADEON_DRI, test x$HAVE_RADEON_DRI = xyes)
AM_CONDITIONAL(HAVE_SWRAST_DRI, test x$HAVE_SWRAST_DRI = xyes)
AM_CONDITIONAL(HAVE_COMMON_DRI, test x$HAVE_COMMON_DRI = xyes)

dnl
dnl OSMesa configuration
dnl

dnl Configure the channel bits for OSMesa (libOSMesa, libOSMesa16, ...)
AC_ARG_WITH([osmesa-bits],
    [AS_HELP_STRING([--with-osmesa-bits=BITS],
        [OSMesa channel bits and library name: 8, 16, 32 @<:@default=8@:>@])],
    [osmesa_bits="$withval"],
    [osmesa_bits=8])
if test "x$osmesa_bits" != x8; then
    if test "x$enable_dri" = xyes -o "x$enable_glx" = xyes; then
        AC_MSG_WARN([Ignoring OSMesa channel bits because of non-OSMesa driver])
        osmesa_bits=8
    fi
fi
case "x$osmesa_bits" in
x8)
    OSMESA_LIB="${OSMESA_LIB}"
    ;;
x16|x32)
    OSMESA_LIB="${OSMESA_LIB}$osmesa_bits"
    DEFINES="$DEFINES -DCHAN_BITS=$osmesa_bits -DDEFAULT_SOFTWARE_DEPTH_BITS=31"
    ;;
*)
    AC_MSG_ERROR([OSMesa bits '$osmesa_bits' is not a valid option])
    ;;
esac

if test "x$enable_osmesa" = xyes; then
    # only link libraries with osmesa if shared
    if test "$enable_static" = no; then
        OSMESA_LIB_DEPS="-lm -lpthread $SELINUX_LIBS $DLOPEN_LIBS"
    else
        OSMESA_LIB_DEPS=""
    fi
    OSMESA_MESA_DEPS=""
    OSMESA_PC_LIB_PRIV="-lm -lpthread $SELINUX_LIBS $DLOPEN_LIBS"
fi
AC_SUBST([OSMESA_LIB_DEPS])
AC_SUBST([OSMESA_MESA_DEPS])
AC_SUBST([OSMESA_PC_REQ])
AC_SUBST([OSMESA_PC_LIB_PRIV])

dnl
dnl gbm configuration
dnl
if test "x$enable_gbm" = xauto; then
    case "$with_egl_platforms" in
        *drm*)
            enable_gbm=yes ;;
         *)
            enable_gbm=no ;;
    esac
fi
if test "x$enable_gbm" = xyes; then
    SRC_DIRS="$SRC_DIRS gbm"

    PKG_CHECK_MODULES([LIBUDEV], [libudev], [],
                      AC_MSG_ERROR([gbm needs udev]))

    if test "x$enable_dri" = xyes; then
        GBM_BACKEND_DIRS="$GBM_BACKEND_DIRS dri"
        if test "$SHARED_GLAPI" -eq 0; then
            AC_MSG_ERROR([gbm_dri requires --enable-shared-glapi])
        fi
    fi
fi
GBM_PC_REQ_PRIV="libudev"
GBM_PC_LIB_PRIV="$DLOPEN_LIBS"
AC_SUBST([GBM_PC_REQ_PRIV])
AC_SUBST([GBM_PC_LIB_PRIV])

dnl
dnl EGL configuration
dnl
EGL_CLIENT_APIS=""

if test "x$enable_egl" = xyes; then
    SRC_DIRS="$SRC_DIRS egl"
    EGL_LIB_DEPS="$DLOPEN_LIBS $SELINUX_LIBS -lpthread"

    AC_CHECK_FUNC(mincore, [DEFINES="$DEFINES -DHAVE_MINCORE"])

    if test "$enable_static" != yes; then
        # build egl_glx when libGL is built
        if test "x$enable_glx" = xyes; then
	    HAVE_EGL_DRIVER_GLX=1
        fi

        PKG_CHECK_MODULES([LIBUDEV], [libudev > 150],
                          [have_libudev=yes],[have_libudev=no])
        if test "$have_libudev" = yes; then
            DEFINES="$DEFINES -DHAVE_LIBUDEV"
        fi

        if test "x$enable_dri" = xyes; then
	    HAVE_EGL_DRIVER_DRI2=1
	fi

    fi
fi
AC_SUBST([EGL_LIB_DEPS])

dnl
dnl EGL Gallium configuration
dnl
if test "x$enable_gallium_egl" = xyes; then
    if test "x$with_gallium_drivers" = x; then
        AC_MSG_ERROR([cannot enable egl_gallium without Gallium])
    fi
    if test "x$enable_egl" = xno; then
        AC_MSG_ERROR([cannot enable egl_gallium without EGL])
    fi
    if test "x$have_libdrm" != xyes; then
        AC_MSG_ERROR([egl_gallium requires libdrm >= $LIBDRM_REQUIRED])
    fi

    GALLIUM_STATE_TRACKERS_DIRS="egl $GALLIUM_STATE_TRACKERS_DIRS"
    GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS egl-static"
    HAVE_ST_EGL="yes"
fi

dnl
dnl gbm Gallium configuration
dnl
if test "x$enable_gallium_gbm" = xauto; then
    case "$enable_gbm$HAVE_ST_EGL$enable_dri$with_egl_platforms" in
        yesyesyes*drm*)
            enable_gallium_gbm=yes ;;
         *)
            enable_gallium_gbm=no ;;
    esac
fi
if test "x$enable_gallium_gbm" = xyes; then
    if test "x$with_gallium_drivers" = x; then
        AC_MSG_ERROR([cannot enable gbm_gallium without Gallium])
    fi
    if test "x$enable_gbm" = xno; then
        AC_MSG_ERROR([cannot enable gbm_gallium without gbm])
    fi
    # gbm_gallium abuses DRI_LIB_DEPS to link.  Make sure it is set.
    if test "x$enable_dri" = xno; then
        AC_MSG_ERROR([gbm_gallium requires --enable-dri to build])
    fi

    GALLIUM_STATE_TRACKERS_DIRS="gbm $GALLIUM_STATE_TRACKERS_DIRS"
    GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS gbm"
    HAVE_ST_GBM="yes"
    enable_gallium_loader=yes
fi

dnl
dnl X.Org DDX configuration
dnl
if test "x$enable_xorg" = xyes; then
    PKG_CHECK_MODULES([XORG], [xorg-server >= 1.6.0])
    PKG_CHECK_MODULES([LIBDRM_XORG], [libdrm >= $LIBDRM_XORG_REQUIRED])
    PKG_CHECK_MODULES([LIBKMS_XORG], [libkms >= $LIBKMS_XORG_REQUIRED])
    PKG_CHECK_MODULES(XEXT, [xextproto >= 7.0.99.1],
        HAVE_XEXTPROTO_71="yes"; DEFINES="$DEFINES -DHAVE_XEXTPROTO_71",
        HAVE_XEXTPROTO_71="no")
    GALLIUM_STATE_TRACKERS_DIRS="xorg $GALLIUM_STATE_TRACKERS_DIRS"
    HAVE_ST_XORG=yes
fi

dnl
dnl XA configuration
dnl
if test "x$enable_xa" = xyes; then
AC_PROG_AWK
AC_PROG_GREP
AC_CHECK_PROG(NM, nm, "nm")
if test "x$AWK" = x || test "x$GREP" = x || test "x$NM" = x; then
AC_MSG_WARN([Missing one of nm, grep or awk. Disabling xa.])
enable_xa=no
fi
fi
if test "x$enable_xa" = xyes; then
    GALLIUM_STATE_TRACKERS_DIRS="xa $GALLIUM_STATE_TRACKERS_DIRS"
    HAVE_ST_XA=yes
    AC_SUBST(AWK)
    AC_SUBST(GREP)
    AC_SUBST(NM)
fi

dnl
dnl OpenVG configuration
dnl
VG_LIB_DEPS=""

if test "x$enable_openvg" = xyes; then
    if test "x$enable_egl" = xno; then
        AC_MSG_ERROR([cannot enable OpenVG without EGL])
    fi
    if test "x$with_gallium_drivers" = x; then
        AC_MSG_ERROR([cannot enable OpenVG without Gallium])
    fi
    if test "x$enable_gallium_egl" = xno; then
        AC_MSG_ERROR([cannot enable OpenVG without egl_gallium])
    fi

    EGL_CLIENT_APIS="$EGL_CLIENT_APIS "'$(VG_LIB)'
    VG_LIB_DEPS="$VG_LIB_DEPS $SELINUX_LIBS -lpthread"
    CORE_DIRS="$CORE_DIRS mapi/vgapi"
    GALLIUM_STATE_TRACKERS_DIRS="vega $GALLIUM_STATE_TRACKERS_DIRS"
    HAVE_ST_VEGA=yes
fi

dnl
dnl D3D1X configuration
dnl

if test "x$enable_d3d1x" = xyes; then
    if test "x$with_gallium_drivers" = x; then
        AC_MSG_ERROR([cannot enable D3D1X without Gallium])
    fi

    GALLIUM_STATE_TRACKERS_DIRS="d3d1x $GALLIUM_STATE_TRACKERS_DIRS"
    HAVE_ST_D3D1X=yes
fi

dnl
dnl Gallium G3DVL configuration
dnl
AC_ARG_ENABLE([gallium-g3dvl],
    [AS_HELP_STRING([--enable-gallium-g3dvl],
        [build gallium g3dvl @<:@default=disabled@:>@])],
    [enable_gallium_g3dvl="$enableval"],
    [enable_gallium_g3dvl=no])
if test "x$enable_gallium_g3dvl" = xyes; then
    if test "x$with_gallium_drivers" = x; then
        AC_MSG_ERROR([cannot enable G3DVL without Gallium])
    fi

    if test "x$enable_xvmc" = xauto; then
	PKG_CHECK_EXISTS([xvmc], [enable_xvmc=yes], [enable_xvmc=no])
    fi

    if test "x$enable_vdpau" = xauto; then
	PKG_CHECK_EXISTS([vdpau], [enable_vdpau=yes], [enable_vdpau=no])
    fi

    if test "x$enable_va" = xauto; then
	#don't enable vaapi state tracker even if package exists
	#PKG_CHECK_EXISTS([libva], [enable_vdpau=yes], [enable_vdpau=no])
        enable_va=no
    fi
fi

if test "x$enable_xvmc" = xyes; then
    PKG_CHECK_MODULES([XVMC], [xvmc >= 1.0.6 x11-xcb xcb-dri2 >= 1.8])
    GALLIUM_STATE_TRACKERS_DIRS="$GALLIUM_STATE_TRACKERS_DIRS xvmc"
    HAVE_ST_XVMC="yes"
fi

if test "x$enable_vdpau" = xyes; then
    PKG_CHECK_MODULES([VDPAU], [vdpau >= 0.4.1 x11-xcb xcb-dri2 >= 1.8])
    GALLIUM_STATE_TRACKERS_DIRS="$GALLIUM_STATE_TRACKERS_DIRS vdpau"
    HAVE_ST_VDPAU="yes"
fi

if test "x$enable_va" = xyes; then
    PKG_CHECK_MODULES([LIBVA], [libva = 0.31.1 x11-xcb xcb-dri2 >= 1.8])
    AC_MSG_WARN([vaapi state tracker currently unmaintained])
    GALLIUM_STATE_TRACKERS_DIRS="$GALLIUM_STATE_TRACKERS_DIRS va"
    HAVE_ST_VA="yes"
fi

dnl
dnl OpenCL configuration
dnl

AC_ARG_WITH([libclc-path],
   [AS_HELP_STRING([--with-libclc-path],
         [Path to libclc builtins library.  Example: --with-libclc-path=\$HOME/libclc/])],
   [LIBCLC_PATH="$withval"],
   [LIBCLC_PATH=""])

AC_ARG_WITH([clang-libdir],
   [AS_HELP_STRING([--with-clang-libdir],
         [Path to Clang libraries @<:@default=llvm-config --libdir@:>@])],
   [CLANG_LIBDIR="$withval"],
   [CLANG_LIBDIR=""])

AC_SUBST([LIBCLC_PATH])

if test "x$enable_opencl" = xyes; then
    if test "x$with_gallium_drivers" = x; then
        AC_MSG_ERROR([cannot enable OpenCL without Gallium])
    fi

    if test $GCC_VERSION_MAJOR -lt 4 -o $GCC_VERSION_MAJOR -eq 4 -a $GCC_VERSION_MINOR -lt 6; then
        AC_MSG_ERROR([gcc >= 4.6 is required to build clover])
    fi

    GALLIUM_STATE_TRACKERS_DIRS="$GALLIUM_STATE_TRACKERS_DIRS clover"
    GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS opencl"
    enable_gallium_loader=yes
fi

dnl
dnl GLU configuration
dnl
AC_ARG_ENABLE([glu],
    [AS_HELP_STRING([--disable-glu],
        [enable OpenGL Utility library @<:@default=enabled@:>@])],
    [enable_glu="$enableval"],
    [enable_glu=yes])

if test "x$enable_glu" = xyes; then
    if test "x$enable_glx" = xno -a "x$enable_osmesa" = xno; then
        AC_MSG_NOTICE([Disabling GLU since there is no OpenGL driver])
        enable_glu=no
    fi
fi

if test "x$enable_glu" = xyes; then
    SRC_DIRS="$SRC_DIRS glu"

    if test "x$enable_glx" = xno; then
        # Link libGLU to libOSMesa instead of libGL
        GLU_LIB_DEPS=""
        GLU_PC_REQ="osmesa"
        if test "$enable_static" = no; then
            GLU_MESA_DEPS='-l$(OSMESA_LIB)'
        else
            GLU_MESA_DEPS=""
        fi
    else
        # If static, empty GLU_LIB_DEPS and add libs for programs to link
        GLU_PC_REQ="gl"
        GLU_PC_LIB_PRIV="-lm"
        if test "$enable_static" = no; then
            GLU_LIB_DEPS="-lm"
            GLU_MESA_DEPS='-l$(GL_LIB)'
        else
            GLU_LIB_DEPS=""
            GLU_MESA_DEPS=""
        fi
    fi
fi
if test "$enable_static" = no; then
    GLU_LIB_DEPS="$GLU_LIB_DEPS $OS_CPLUSPLUS_LIBS"
fi
GLU_PC_LIB_PRIV="$GLU_PC_LIB_PRIV $OS_CPLUSPLUS_LIBS"
AC_SUBST([GLU_LIB_DEPS])
AC_SUBST([GLU_MESA_DEPS])
AC_SUBST([GLU_PC_REQ])
AC_SUBST([GLU_PC_REQ_PRIV])
AC_SUBST([GLU_PC_LIB_PRIV])
AC_SUBST([GLU_PC_CFLAGS])

AC_SUBST([PROGRAM_DIRS])

dnl
dnl Gallium configuration
dnl
if test "x$with_gallium_drivers" != x; then
    SRC_DIRS="$SRC_DIRS gallium gallium/winsys gallium/targets"
fi

AC_SUBST([LLVM_BINDIR])
AC_SUBST([LLVM_CFLAGS])
AC_SUBST([LLVM_CPPFLAGS])
AC_SUBST([LLVM_CXXFLAGS])
AC_SUBST([LLVM_LIBDIR])
AC_SUBST([LLVM_LIBS])
AC_SUBST([LLVM_LDFLAGS])
AC_SUBST([LLVM_INCLUDEDIR])
AC_SUBST([LLVM_VERSION])
AC_SUBST([CLANG_RESOURCE_DIR])

case "x$enable_opengl$enable_gles1$enable_gles2" in
x*yes*)
    EGL_CLIENT_APIS="$EGL_CLIENT_APIS "'$(GL_LIB)'
    ;;
esac

AC_SUBST([VG_LIB_DEPS])
AC_SUBST([EGL_CLIENT_APIS])

dnl
dnl EGL Platforms configuration
dnl
AC_ARG_WITH([egl-platforms],
    [AS_HELP_STRING([--with-egl-platforms@<:@=DIRS...@:>@],
        [comma delimited native platforms libEGL supports, e.g.
        "x11,drm" @<:@default=auto@:>@])],
    [with_egl_platforms="$withval"],
    [if test "x$enable_egl" = xyes; then
	with_egl_platforms="x11"
    else
	with_egl_platforms=""
    fi])

EGL_PLATFORMS=""

if test "x$with_egl_platforms" != "x" -a "x$enable_egl" != xyes; then
    AC_MSG_ERROR([cannot build egl state tracker without EGL library])
fi

# Do per-EGL platform setups and checks
egl_platforms=`IFS=', '; echo $with_egl_platforms`
for plat in $egl_platforms; do
	case "$plat" in
	fbdev|null)
		GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/$plat"
		;;

	wayland)
		PKG_CHECK_MODULES([WAYLAND], [wayland-client wayland-server],, \
				  [AC_MSG_ERROR([cannot find libwayland-client])])
		GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/wayland"

		m4_ifdef([WAYLAND_SCANNER_RULES],
		         [WAYLAND_SCANNER_RULES(['$(top_srcdir)/src/egl/wayland/wayland-drm/protocol'])])
		;;

	x11)
		PKG_CHECK_MODULES([XCB_DRI2], [x11-xcb xcb-dri2 xcb-xfixes])
		# workaround a bug in xcb-dri2 generated by xcb-proto 1.6
		save_LIBS="$LIBS"
		AC_CHECK_LIB(xcb-dri2, xcb_dri2_connect_alignment_pad, [],
			     [DEFINES="$DEFINES -DXCB_DRI2_CONNECT_DEVICE_NAME_BROKEN"])
		LIBS="$save_LIBS"
		;;

	drm)
		test "x$enable_gbm" = "xno" &&
			AC_MSG_ERROR([EGL platform drm needs gbm])
		;;

	android|gdi)
		;;

	*)
		AC_MSG_ERROR([EGL platform '$plat' does not exist])
		;;
	esac

        case "$plat$have_libudev" in
                waylandno|drmno)
                    AC_MSG_ERROR([cannot build $plat platfrom without udev]) ;;
        esac
done

# libEGL wants to default to the first platform specified in
# ./configure.  parse that here.
if test "x$egl_platforms" != "x"; then
    FIRST_PLATFORM_CAPS=`echo $egl_platforms | sed 's| .*||' | tr 'a-z' 'A-Z'`
    EGL_NATIVE_PLATFORM="_EGL_PLATFORM_$FIRST_PLATFORM_CAPS"
else
    EGL_NATIVE_PLATFORM="_EGL_INVALID_PLATFORM"
fi

EGL_PLATFORMS="$egl_platforms"

AM_CONDITIONAL(HAVE_EGL_PLATFORM_X11, echo "$egl_platforms" | grep 'x11' >/dev/null 2>&1)
AM_CONDITIONAL(HAVE_EGL_PLATFORM_WAYLAND, echo "$egl_platforms" | grep 'wayland' >/dev/null 2>&1)
AM_CONDITIONAL(HAVE_EGL_PLATFORM_DRM, echo "$egl_platforms" | grep 'drm' >/dev/null 2>&1)
AM_CONDITIONAL(HAVE_EGL_PLATFORM_FBDEV, echo "$egl_platforms" | grep 'fbdev' >/dev/null 2>&1)
AM_CONDITIONAL(HAVE_EGL_PLATFORM_NULL, echo "$egl_platforms" | grep 'null' >/dev/null 2>&1)

AM_CONDITIONAL(HAVE_EGL_DRIVER_DRI2, test "x$HAVE_EGL_DRIVER_DRI2" != "x")
AM_CONDITIONAL(HAVE_EGL_DRIVER_GLX, test "x$HAVE_EGL_DRIVER_GLX" != "x")

AC_SUBST([EGL_NATIVE_PLATFORM])
AC_SUBST([EGL_PLATFORMS])
AC_SUBST([EGL_CFLAGS])

AC_ARG_WITH([egl-driver-dir],
    [AS_HELP_STRING([--with-egl-driver-dir=DIR],
                    [directory for EGL drivers [[default=${libdir}/egl]]])],
    [EGL_DRIVER_INSTALL_DIR="$withval"],
    [EGL_DRIVER_INSTALL_DIR='${libdir}/egl'])
AC_SUBST([EGL_DRIVER_INSTALL_DIR])

AC_ARG_WITH([xorg-driver-dir],
    [AS_HELP_STRING([--with-xorg-driver-dir=DIR],
                    [Default xorg driver directory[[default=${libdir}/xorg/modules/drivers]]])],
    [XORG_DRIVER_INSTALL_DIR="$withval"],
    [XORG_DRIVER_INSTALL_DIR="${libdir}/xorg/modules/drivers"])
AC_SUBST([XORG_DRIVER_INSTALL_DIR])

AC_ARG_WITH([max-width],
    [AS_HELP_STRING([--with-max-width=N],
                    [Maximum framebuffer width (4096)])],
    [DEFINES="${DEFINES} -DMAX_WIDTH=${withval}";
     AS_IF([test "${withval}" -gt "4096"],
           [AC_MSG_WARN([Large framebuffer: see s_tritemp.h comments.])])]
)
AC_ARG_WITH([max-height],
    [AS_HELP_STRING([--with-max-height=N],
                    [Maximum framebuffer height (4096)])],
    [DEFINES="${DEFINES} -DMAX_HEIGHT=${withval}";
     AS_IF([test "${withval}" -gt "4096"],
           [AC_MSG_WARN([Large framebuffer: see s_tritemp.h comments.])])]
)

dnl
dnl Gallium LLVM
dnl
AC_ARG_ENABLE([gallium-llvm],
    [AS_HELP_STRING([--enable-gallium-llvm],
        [build gallium LLVM support @<:@default=enabled on x86/x86_64@:>@])],
    [enable_gallium_llvm="$enableval"],
    [enable_gallium_llvm=auto])

AC_ARG_WITH([llvm-shared-libs],
    [AS_HELP_STRING([--with-llvm-shared-libs],
        [link with LLVM shared libraries @<:@default=disabled@:>@])],
    [with_llvm_shared_libs=yes],
    [with_llvm_shared_libs=no])

if test "x$with_gallium_drivers" = x; then
    enable_gallium_llvm=no
fi
if test "x$enable_gallium_llvm" = xauto; then
    case "$host_cpu" in
    i*86|x86_64) enable_gallium_llvm=yes;;
    esac
fi
if test "x$enable_gallium_llvm" = xyes; then
    AC_PATH_PROG([LLVM_CONFIG], [llvm-config], [no])

    if test "x$LLVM_CONFIG" != xno; then
	LLVM_VERSION=`$LLVM_CONFIG --version | sed 's/svn.*//g'`
	LLVM_CFLAGS=`$LLVM_CONFIG --cppflags|sed -e 's/-DNDEBUG\>//g' -e 's/-pedantic//g' -e 's/-Wcovered-switch-default//g'`
	if test "x$with_llvm_shared_libs" = xyes; then
	    dnl We can't use $LLVM_VERSION because it has 'svn' stripped out,
	    LLVM_LIBS="-lLLVM-`$LLVM_CONFIG --version`"
	else
	    LLVM_LIBS="`$LLVM_CONFIG --libs engine bitwriter`"
            if test "x$enable_opencl" = xyes; then
                LLVM_LIBS="${LLVM_LIBS} `llvm-config --libs ipo linker instrumentation`"
            fi
	fi
	LLVM_LDFLAGS=`$LLVM_CONFIG --ldflags`
	LLVM_BINDIR=`$LLVM_CONFIG --bindir`
	LLVM_CXXFLAGS=`$LLVM_CONFIG --cxxflags`
	LLVM_CPPFLAGS=`$LLVM_CONFIG --cppflags`
	LLVM_INCLUDEDIR=`$LLVM_CONFIG --includedir`
	LLVM_LIBDIR=`$LLVM_CONFIG --libdir`
	DEFINES="${DEFINES} -DHAVE_LLVM=`echo $LLVM_VERSION | sed -e 's/\([[0-9]]\)\.\([[0-9]]\)/0x0\10\2/g'`"
	MESA_LLVM=1

	dnl Check for Clang interanl headers
        if test "x$enable_opencl" = xyes; then
            if test "x$CLANG_LIBDIR" = x; then
                CLANG_LIBDIR=${LLVM_LIBDIR}
            fi
            CLANG_RESOURCE_DIR=$CLANG_LIBDIR/clang/${LLVM_VERSION}
            AC_CHECK_FILE("$CLANG_RESOURCE_DIR/include/stddef.h",,
                AC_MSG_ERROR([Could not find clang internal header stddef.h in $CLANG_RESOURCE_DIR Use --with-clang-libdir to specify the correct path to the clang libraries.]))
        fi
    else
	MESA_LLVM=0
    fi
else
    MESA_LLVM=0
fi

dnl Directory for XVMC libs
AC_ARG_WITH([xvmc-libdir],
    [AS_HELP_STRING([--with-xvmc-libdir=DIR],
        [directory for the XVMC libraries @<:@default=${libdir}@:>@])],
    [XVMC_LIB_INSTALL_DIR="$withval"],
    [XVMC_LIB_INSTALL_DIR='${libdir}'])
AC_SUBST([XVMC_LIB_INSTALL_DIR])

dnl
dnl Gallium Tests
dnl
if test "x$enable_gallium_tests" = xyes; then
    SRC_DIRS="$SRC_DIRS gallium/tests/trivial"
    enable_gallium_loader=yes
fi

dnl Directory for VDPAU libs
AC_ARG_WITH([vdpau-libdir],
    [AS_HELP_STRING([--with-vdpau-libdir=DIR],
        [directory for the VDPAU libraries @<:@default=${libdir}/vdpau@:>@])],
    [VDPAU_LIB_INSTALL_DIR="$withval"],
    [VDPAU_LIB_INSTALL_DIR='${libdir}/vdpau'])
AC_SUBST([VDPAU_LIB_INSTALL_DIR])

dnl Directory for VA libs
AC_ARG_WITH([va-libdir],
    [AS_HELP_STRING([--with-va-libdir=DIR],
        [directory for the VA libraries @<:@default=${libdir}/va@:>@])],
    [VA_LIB_INSTALL_DIR="$withval"],
    [VA_LIB_INSTALL_DIR='${libdir}/va'])
AC_SUBST([VA_LIB_INSTALL_DIR])

dnl Directory for OpenCL libs
AC_ARG_WITH([opencl-libdir],
    [AS_HELP_STRING([--with-opencl-libdir=DIR],
        [directory for the OpenCL libraries @<:@default=${libdir}/opencl@:>@])],
    [OPENCL_LIB_INSTALL_DIR="$withval"],
    [OPENCL_LIB_INSTALL_DIR='${libdir}/opencl'])
AC_SUBST([OPENCL_LIB_INSTALL_DIR])

dnl
dnl Gallium helper functions
dnl
gallium_check_st() {
    if test "x$HAVE_ST_DRI" = xyes || test "x$HAVE_ST_XORG" = xyes ||
	 test "x$HAVE_ST_XA" = xyes || test "x$HAVE_ST_XVMC" = xyes ||
	 test "x$HAVE_ST_VDPAU" = xyes || test "x$HAVE_ST_VA" = xyes; then
         if test "x$have_libdrm" != xyes; then
            AC_MSG_ERROR([DRI or Xorg DDX requires libdrm >= $LIBDRM_REQUIRED])
         fi
         GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS $1"
    fi
    if test "x$HAVE_ST_DRI" = xyes && test "x$2" != x; then
         GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $2"
    fi
    if test "x$HAVE_ST_XORG" = xyes && test "x$3" != x; then
         GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $3"
    fi
    if test "x$HAVE_ST_XA" = xyes && test "x$4" != x; then
         GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $4"
    fi
    if test "x$HAVE_ST_XVMC" = xyes && test "x$5" != x; then
         GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $5"
    fi
    if test "x$HAVE_ST_VDPAU" = xyes && test "x$6" != x; then
         GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $6"
    fi
    if test "x$HAVE_ST_VA" = xyes && test "x$7" != x; then
         GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $7"
    fi
}

gallium_require_llvm() {
    if test "x$MESA_LLVM" = x0; then
        case "$host_cpu" in
        i*86|x86_64) AC_MSG_ERROR([LLVM is required to build $1 on x86 and x86_64]);;
        esac
    fi
}

gallium_require_drm_loader() {
    if test "x$enable_gallium_loader" = xyes; then
        PKG_CHECK_MODULES([LIBUDEV], [libudev], [],
                          AC_MSG_ERROR([Gallium drm loader requrires libudev]))
        if test "x$have_libdrm" != xyes; then
            AC_MSG_ERROR([Gallium drm loader requires libdrm >= $LIBDRM_REQUIRED])
        fi
        enable_gallium_drm_loader=yes
    fi
}

dnl Gallium drivers
dnl Duplicates in GALLIUM_DRIVERS_DIRS are removed by sorting it after this block
if test "x$with_gallium_drivers" != x; then
    gallium_drivers=`IFS=', '; echo $with_gallium_drivers`
    for driver in $gallium_drivers; do
        case "x$driver" in
        xsvga)
            GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS svga softpipe"
            gallium_check_st "svga/drm" "dri-vmwgfx" "" "xa-vmwgfx"
            ;;
        xi915)
            PKG_CHECK_MODULES([INTEL], [libdrm_intel >= $LIBDRM_INTEL_REQUIRED])
            GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS i915 softpipe"
            if test "x$MESA_LLVM" = x1; then
                GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS llvmpipe"
            fi
            GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS i915/sw"
            gallium_check_st "i915/drm" "dri-i915" "xorg-i915"
            ;;
        xr300)
            PKG_CHECK_MODULES([RADEON], [libdrm_radeon >= $LIBDRM_RADEON_REQUIRED])
            gallium_require_llvm "Gallium R300"
            GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS r300"
            gallium_check_st "radeon/drm" "dri-r300" "xorg-r300" "" "xvmc-r300" "vdpau-r300" "va-r300"
            ;;
        xr600)
            PKG_CHECK_MODULES([RADEON], [libdrm_radeon >= $LIBDRM_RADEON_REQUIRED])
            gallium_require_drm_loader
            GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS r600"
            if test "x$enable_r600_llvm" = xyes -o "x$enable_opencl" = xyes; then
                if test "x$LLVM_VERSION" != "x3.1"; then
                    AC_MSG_ERROR([LLVM 3.1 is required for the r600 llvm compiler.])
                fi
                NEED_RADEON_GALLIUM=yes;
            fi
            if test "x$enable_r600_llvm" = xyes; then
                USE_R600_LLVM_COMPILER=yes;
            fi
            if test "x$enable_opencl" = xyes -a "x$with_llvm_shared_libs" = xno; then
                LLVM_LIBS="${LLVM_LIBS} `llvm-config --libs bitreader asmparser`"
            fi
            gallium_check_st "radeon/drm" "dri-r600" "xorg-r600" "" "xvmc-r600" "vdpau-r600" "va-r600"
            ;;
        xradeonsi)
            PKG_CHECK_MODULES([RADEON], [libdrm_radeon >= $LIBDRM_RADEON_REQUIRED])
            gallium_require_drm_loader
            GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS radeonsi"
            if test "x$LLVM_VERSION" != "x3.1"; then
                AC_MSG_ERROR([LLVM 3.1 is required to build the radeonsi driver.])
            fi
	    NEED_RADEON_GALLIUM=yes;
            gallium_check_st "radeon/drm" "dri-radeonsi" "xorg-radeonsi"
            ;;
        xnouveau)
            PKG_CHECK_MODULES([NOUVEAU], [libdrm_nouveau >= $LIBDRM_NOUVEAU_REQUIRED])
            gallium_require_drm_loader
            GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS nouveau nv30 nv50 nvc0"
            gallium_check_st "nouveau/drm" "dri-nouveau" "xorg-nouveau" "" "xvmc-nouveau" "vdpau-nouveau"
            ;;
        xswrast)
            GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS softpipe"
            if test "x$MESA_LLVM" = x1; then
                GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS llvmpipe"
            fi

            if test "x$HAVE_ST_DRI" = xyes; then
                GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS dri-swrast"
            fi
            if test "x$HAVE_ST_VDPAU" = xyes; then
                GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS vdpau-softpipe"
            fi
            if test "x$HAVE_ST_XVMC" = xyes; then
                GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS xvmc-softpipe"
            fi
            if test "x$HAVE_ST_VA" = xyes; then
                GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS va-softpipe"
            fi
            if test "x$HAVE_ST_VDPAU" = xyes ||
               test "x$HAVE_ST_XVMC" = xyes ||
               test "x$HAVE_ST_VA" = xyes; then
               if test "x$HAVE_WINSYS_XLIB" != xyes; then
                  GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/xlib"
               fi
            fi
            ;;
        *)
            AC_MSG_ERROR([Unknown Gallium driver: $driver])
            ;;
        esac
    done
fi

if test "x$enable_gallium_loader" = xyes; then
    GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/null"
    GALLIUM_PIPE_LOADER_DEFINES="-DHAVE_PIPE_LOADER_SW"
    GALLIUM_PIPE_LOADER_LIBS="\$(TOP)/src/gallium/auxiliary/pipe-loader/libpipe_loader.a"
    GALLIUM_PIPE_LOADER_LIBS="$GALLIUM_PIPE_LOADER_LIBS \$(TOP)/src/gallium/winsys/sw/null/libws_null.a"

    if test "x$HAVE_WINSYS_XLIB" = xyes; then
        GALLIUM_PIPE_LOADER_DEFINES="$GALLIUM_PIPE_LOADER_DEFINES -DHAVE_PIPE_LOADER_XLIB"
        GALLIUM_PIPE_LOADER_LIBS="$GALLIUM_PIPE_LOADER_LIBS \$(TOP)/src/gallium/winsys/sw/xlib/libws_xlib.a"
    fi

    if test "x$enable_gallium_drm_loader" = xyes; then
        GALLIUM_PIPE_LOADER_DEFINES="$GALLIUM_PIPE_LOADER_DEFINES -DHAVE_PIPE_LOADER_DRM"
    fi

    AC_SUBST([GALLIUM_PIPE_LOADER_DEFINES])
    AC_SUBST([GALLIUM_PIPE_LOADER_LIBS])
fi

dnl Tell Automake which drivers to build
for driver in $GALLIUM_DRIVERS_DIRS; do
    case "x$driver" in
        xgalahad)
            HAVE_GALAHAD_GALLIUM=yes;
	    ;;
	xidentity)
	    HAVE_IDENTITY_GALLIUM=yes;
	    ;;
	xnoop)
	    HAVE_NOOP_GALLIUM=yes;
	    ;;
        *)
            GALLIUM_MAKE_DIRS="$GALLIUM_MAKE_DIRS $driver"
	    ;;
    esac
done

AM_CONDITIONAL(HAVE_GALAHAD_GALLIUM, test x$HAVE_GALAHAD_GALLIUM = xyes)
AM_CONDITIONAL(HAVE_IDENTITY_GALLIUM, test x$HAVE_IDENTITY_GALLIUM = xyes)
AM_CONDITIONAL(HAVE_NOOP_GALLIUM, test x$HAVE_NOOP_GALLIUM = xyes)
AM_CONDITIONAL(NEED_RADEON_GALLIUM, test x$NEED_RADEON_GALLIUM = xyes)
AM_CONDITIONAL(USE_R600_LLVM_COMPILER, test x$USE_R600_LLVM_COMPILER = xyes)
AM_CONDITIONAL(HAVE_LOADER_GALLIUM, test x$enable_gallium_loader = xyes)
AM_CONDITIONAL(HAVE_DRM_LOADER_GALLIUM, test x$enable_gallium_drm_loader = xyes)
AM_CONDITIONAL(HAVE_GALLIUM_COMPUTE, test x$enable_opencl = xyes)
AC_SUBST([GALLIUM_MAKE_DIRS])

AM_CONDITIONAL(HAVE_X11_DRIVER, echo "$DRIVER_DIRS" | grep 'x11' >/dev/null 2>&1)
AM_CONDITIONAL(HAVE_DRI_DRIVER, echo "$DRIVER_DIRS" | grep 'dri' >/dev/null 2>&1)
AM_CONDITIONAL(HAVE_OSMESA_DRIVER, echo "$DRIVER_DIRS" | grep 'osmesa' >/dev/null 2>&1)

AM_CONDITIONAL(HAVE_X86_ASM, echo "$DEFINES" | grep 'X86_ASM' >/dev/null 2>&1)
AM_CONDITIONAL(HAVE_X86_64_ASM, echo "$DEFINES" | grep 'X86_64_ASM' >/dev/null 2>&1)
AM_CONDITIONAL(HAVE_SPARC_ASM, echo "$DEFINES" | grep 'SPARC_ASM' >/dev/null 2>&1)

dnl prepend CORE_DIRS to SRC_DIRS
SRC_DIRS="$CORE_DIRS $SRC_DIRS"

dnl Restore LDFLAGS and CPPFLAGS
LDFLAGS="$_SAVE_LDFLAGS"
CPPFLAGS="$_SAVE_CPPFLAGS"

dnl Add user CFLAGS and CXXFLAGS
CFLAGS="$CFLAGS $USER_CFLAGS"
CXXFLAGS="$CXXFLAGS $USER_CXXFLAGS"

dnl Substitute the config
AC_CONFIG_FILES([configs/current
		Makefile
		src/Makefile
		src/gallium/Makefile
		src/gallium/auxiliary/pipe-loader/Makefile
		src/gallium/state_trackers/clover/Makefile
		src/gallium/drivers/Makefile
		src/gallium/drivers/r300/Makefile
		src/gallium/drivers/r600/Makefile
		src/gallium/targets/opencl/Makefile
		src/gbm/Makefile
		src/gbm/main/gbm.pc
		src/egl/drivers/Makefile
		src/egl/drivers/dri2/Makefile
		src/egl/drivers/glx/Makefile
		src/egl/Makefile
		src/egl/main/Makefile
		src/egl/main/egl.pc
		src/egl/wayland/Makefile
		src/egl/wayland/wayland-egl/Makefile
		src/egl/wayland/wayland-egl/wayland-egl.pc
		src/egl/wayland/wayland-drm/Makefile
		src/glsl/tests/Makefile
		src/glx/Makefile
		src/glx/tests/Makefile
		src/mapi/glapi/gen/Makefile
		src/mapi/shared-glapi/Makefile
		src/mapi/glapi/tests/Makefile
		src/gtest/Makefile
		src/mesa/Makefile
		src/mesa/libdricore/Makefile
		src/mesa/main/tests/Makefile
		src/mesa/x86/Makefile
		src/mesa/x86-64/Makefile
		src/mesa/drivers/Makefile
		src/mesa/drivers/dri/dri.pc
		src/mesa/drivers/dri/Makefile
		src/mesa/drivers/dri/common/Makefile
		src/mesa/drivers/dri/i915/Makefile
		src/mesa/drivers/dri/i965/Makefile
		src/mesa/drivers/dri/nouveau/Makefile
		src/mesa/drivers/dri/r200/Makefile
		src/mesa/drivers/dri/radeon/Makefile
		src/mesa/drivers/dri/swrast/Makefile
		src/mesa/drivers/x11/Makefile
		src/mesa/gl.pc
		src/mesa/osmesa.pc])

dnl Sort the dirs alphabetically
GALLIUM_TARGET_DIRS=`echo $GALLIUM_TARGET_DIRS|tr " " "\n"|sort -u|tr "\n" " "`
GALLIUM_WINSYS_DIRS=`echo $GALLIUM_WINSYS_DIRS|tr " " "\n"|sort -u|tr "\n" " "`
GALLIUM_DRIVERS_DIRS=`echo $GALLIUM_DRIVERS_DIRS|tr " " "\n"|sort -u|tr "\n" " "`
GALLIUM_MAKE_DIRS=`echo $GALLIUM_MAKE_DIRS|tr " " "\n"|sort -u|tr "\n" " "`
GALLIUM_STATE_TRACKERS_DIRS=`echo $GALLIUM_STATE_TRACKERS_DIRS|tr " " "\n"|sort -u|tr "\n" " "`

AC_OUTPUT

dnl
dnl Output some configuration info for the user
dnl
echo ""
echo "        prefix:          $prefix"
echo "        exec_prefix:     $exec_prefix"
echo "        libdir:          $libdir"
echo "        includedir:      $includedir"

dnl API info
echo ""
echo "        OpenGL:          $enable_opengl (ES1: $enable_gles1 ES2: $enable_gles2)"
echo "        OpenVG:          $enable_openvg"

dnl Driver info
echo ""
if test "x$enable_osmesa" != xno; then
        echo "        OSMesa:          lib$OSMESA_LIB"
else
        echo "        OSMesa:          no"
fi

if test "x$enable_dri" != xno; then
        # cleanup the drivers var
        dri_dirs=`echo $DRI_DIRS | $SED 's/^ *//;s/  */ /;s/ *$//'`
        if test "x$DRI_DIRS" = x; then
            echo "        DRI drivers:     no"
        else
            echo "        DRI drivers:     $dri_dirs"
        fi
        echo "        DRI driver dir:  $DRI_DRIVER_INSTALL_DIR"
fi

case "x$enable_glx$enable_xlib_glx" in
xyesyes)
    echo "        GLX:             Xlib-based"
    ;;
xyesno)
    echo "        GLX:             DRI-based"
    ;;
*)
    echo "        GLX:             $enable_glx"
    ;;
esac

echo ""
echo "        GLU:             $enable_glu"

dnl EGL
echo ""
echo "        EGL:             $enable_egl"
if test "$enable_egl" = yes; then
    echo "        EGL platforms:   $EGL_PLATFORMS"

    egl_drivers=""
    if test "x$HAVE_EGL_DRIVER_GLX" != "x"; then
        egl_drivers="$egl_drivers builtin:egl_glx"
    fi
    if test "x$HAVE_EGL_DRIVER_DRI2" != "x"; then
        egl_drivers="$egl_drivers builtin:egl_dri2"
    fi

    if test "x$HAVE_ST_EGL" = xyes; then
        echo "        EGL drivers:    ${egl_drivers} egl_gallium"
        echo "        EGL Gallium STs:$EGL_CLIENT_APIS"
    else
        echo "        EGL drivers:    $egl_drivers"
    fi
fi

echo ""
if test "x$MESA_LLVM" = x1; then
    echo "        llvm:            yes"
    echo "        llvm-config:     $LLVM_CONFIG"
    echo "        llvm-version:    $LLVM_VERSION"
else
    echo "        llvm:            no"
fi

echo ""
if echo "$SRC_DIRS" | grep 'gallium' >/dev/null 2>&1; then
    echo "        Gallium:         yes"
    echo "        Gallium dirs:    $GALLIUM_DIRS"
    echo "        Target dirs:     $GALLIUM_TARGET_DIRS"
    echo "        Winsys dirs:     $GALLIUM_WINSYS_DIRS"
    echo "        Driver dirs:     $GALLIUM_DRIVERS_DIRS"
    echo "        Trackers dirs:   $GALLIUM_STATE_TRACKERS_DIRS"
else
    echo "        Gallium:         no"
fi


dnl Libraries
echo ""
echo "        Shared libs:     $enable_shared"
echo "        Static libs:     $enable_static"

dnl Compiler options
# cleanup the CFLAGS/CXXFLAGS/DEFINES vars
cflags=`echo $CFLAGS $OPT_FLAGS $PIC_FLAGS $ARCH_FLAGS | \
    $SED 's/^ *//;s/  */ /;s/ *$//'`
cxxflags=`echo $CXXFLAGS $OPT_FLAGS $PIC_FLAGS $ARCH_FLAGS | \
    $SED 's/^ *//;s/  */ /;s/ *$//'`
defines=`echo $DEFINES | $SED 's/^ *//;s/  */ /;s/ *$//'`
echo ""
echo "        CFLAGS:          $cflags"
echo "        CXXFLAGS:        $cxxflags"
echo "        Macros:          $defines"
echo ""
echo "        PYTHON2:         $PYTHON2"

echo ""
echo "        Run '${MAKE-make}' to build Mesa"
echo ""