summaryrefslogtreecommitdiff
blob: c2a8ba56ccb1569cce9b93f193dbcaae54ee2413 (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
# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain.eclass,v 1.235 2005/12/24 05:00:37 vapier Exp $

HOMEPAGE="http://www.gnu.org/software/gcc/gcc.html"
LICENSE="GPL-2 LGPL-2.1"
RESTRICT="nostrip" # cross-compilers need controlled stripping

#---->> eclass stuff <<----
inherit eutils versionator libtool toolchain-funcs flag-o-matic gnuconfig multilib fixheadtails

EXPORT_FUNCTIONS pkg_setup src_unpack src_compile src_test pkg_preinst src_install pkg_postinst pkg_prerm pkg_postrm
DESCRIPTION="Based on the ${ECLASS} eclass"

FEATURES=${FEATURES/multilib-strict/}

toolchain_pkg_setup() {
	gcc_pkg_setup
}
toolchain_src_unpack() {
	gcc_src_unpack
}
toolchain_src_compile() {
	gcc_src_compile
}
toolchain_src_test() {
	gcc_src_test
}
toolchain_pkg_preinst() {
	${ETYPE}_pkg_preinst
}
toolchain_src_install() {
	${ETYPE}_src_install
}
toolchain_pkg_postinst() {
	${ETYPE}_pkg_postinst
}
toolchain_pkg_prerm() {
	${ETYPE}_pkg_prerm
}
toolchain_pkg_postrm() {
	${ETYPE}_pkg_postrm
}
#----<< eclass stuff >>----


#---->> globals <<----
export CTARGET=${CTARGET:-${CHOST}}
if [[ ${CTARGET} = ${CHOST} ]] ; then
	if [[ ${CATEGORY/cross-} != ${CATEGORY} ]] ; then
		export CTARGET=${CATEGORY/cross-}
	fi
fi
is_crosscompile() {
	[[ ${CHOST} != ${CTARGET} ]]
}

GCC_RELEASE_VER=$(get_version_component_range 1-3)
GCC_BRANCH_VER=$(get_version_component_range 1-2)
GCCMAJOR=$(get_version_component_range 1)
GCCMINOR=$(get_version_component_range 2)
GCCMICRO=$(get_version_component_range 3)
[[ ${BRANCH_UPDATE-notset} == "notset" ]] && BRANCH_UPDATE=$(get_version_component_range 4)

# According to gcc/c-cppbuiltin.c, GCC_CONFIG_VER MUST match this regex.
# ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)?
GCC_CONFIG_VER=${GCC_CONFIG_VER:-"$(replace_version_separator 3 '-')"}

# Pre-release support
if [[ ${PV} != ${PV/_pre/-} ]] ; then
	PRERELEASE=${PV/_pre/-}
fi
# make _alpha and _beta ebuilds automatically use a snapshot
if [[ ${PV} != ${PV/_alpha/} ]] ; then
	SNAPSHOT=${GCC_BRANCH_VER}-${PV##*_alpha}
elif [[ ${PV} != ${PV/_beta/} ]] ; then
	SNAPSHOT=${GCC_BRANCH_VER}-${PV##*_beta}
fi
export GCC_FILESDIR=${GCC_FILESDIR:-${FILESDIR}}

if [[ ${ETYPE} == "gcc-library" ]] ; then
	GCC_VAR_TYPE=${GCC_VAR_TYPE:-non-versioned}
	GCC_LIB_COMPAT_ONLY=${GCC_LIB_COMPAT_ONLY:-true}
	GCC_TARGET_NO_MULTILIB=${GCC_TARGET_NO_MULTILIB:-true}
else
	GCC_VAR_TYPE=${GCC_VAR_TYPE:-versioned}
	GCC_LIB_COMPAT_ONLY="false"
	GCC_TARGET_NO_MULTILIB=${GCC_TARGET_NO_MULTILIB:-false}
fi

PREFIX=${TOOLCHAIN_PREFIX:-/usr}

if [[ ${GCC_VAR_TYPE} == "versioned" ]] ; then
	if version_is_at_least 3.4.0 ; then
		LIBPATH=${TOOLCHAIN_LIBPATH:-${PREFIX}/lib/gcc/${CTARGET}/${GCC_CONFIG_VER}}
	else
		LIBPATH=${TOOLCHAIN_LIBPATH:-${PREFIX}/lib/gcc-lib/${CTARGET}/${GCC_CONFIG_VER}}
	fi
	LIBEXECPATH=${TOOLCHAIN_LIBEXE:-${PREFIX}/libexec/gcc/${CTARGET}/${GCC_CONFIG_VER}}
	INCLUDEPATH=${TOOLCHAIN_INCLUDEPATH:-${LIBPATH}/include}
	BINPATH=${TOOLCHAIN_BINPATH:-${PREFIX}/${CTARGET}/gcc-bin/${GCC_CONFIG_VER}}
	DATAPATH=${TOOLCHAIN_DATAPATH:-${PREFIX}/share/gcc-data/${CTARGET}/${GCC_CONFIG_VER}}
	# Dont install in /usr/include/g++-v3/, but in gcc internal directory.
	# We will handle /usr/include/g++-v3/ with gcc-config ...
	STDCXX_INCDIR=${TOOLCHAIN_STDCXX_INCDIR:-${LIBPATH}/include/g++-v${GCC_BRANCH_VER/\.*/}}
elif [[ ${GCC_VAR_TYPE} == "non-versioned" ]] ; then
	# using non-versioned directories to install gcc, like what is currently
	# done for ppc64 and 3.3.3_pre, is a BAD IDEA. DO NOT do it!! However...
	# setting up variables for non-versioned directories might be useful for
	# specific gcc targets, like libffi. Note that we dont override the value
	# returned by get_libdir here.
	LIBPATH=${TOOLCHAIN_LIBPATH:-${PREFIX}/$(get_libdir)}
	LIBEXECPATH=${TOOLCHAIN_LIBEXE:-${PREFIX}/libexec/gcc}
	INCLUDEPATH=${TOOLCHAIN_INCLUDEPATH:-${PREFIX}/include}
	BINPATH=${TOOLCHAIN_BINPATH:-${PREFIX}/bin}
	DATAPATH=${TOOLCHAIN_DATAPATH:-${PREFIX}/share}
	STDCXX_INCDIR=${TOOLCHAIN_STDCXX_INCDIR:-${PREFIX}/include/g++-v3}
fi

XGCC="${WORKDIR}/build/gcc/xgcc -B${WORKDIR}/build/gcc"
#----<< globals >>----


#---->> SLOT+IUSE logic <<----
if [[ ${ETYPE} == "gcc-library" ]] ; then
	IUSE="nls build"
	SLOT="${CTARGET}-${SO_VERSION_SLOT:-5}"
else
	if [[ ${PN} != "kgcc64" ]] ; then
		IUSE="altivec bootstrap build fortran gcj gtk hardened ip28 multilib multislot n32 n64 nls nocxx objc objc-gc vanilla mudflap"
		[[ -n ${PIE_VER}    ]] && IUSE="${IUSE} nopie"
		[[ -n ${PP_VER}     ]] && IUSE="${IUSE} nossp"
		[[ -n ${HTB_VER}    ]] && IUSE="${IUSE} boundschecking"
	fi
	# Support upgrade paths here or people get pissed
	if use multislot ; then
		SLOT="${CTARGET}-${GCC_CONFIG_VER}"
	elif is_crosscompile; then
		SLOT="${CTARGET}-${GCC_BRANCH_VER}"
	else
		SLOT="${GCC_BRANCH_VER}"
	fi
fi
#----<< SLOT+IUSE logic >>----


#---->> S + SRC_URI essentials <<----

# This function sets the source directory depending on whether we're using
# a prerelease, snapshot, or release tarball. To use it, just set S with:
#
#	S="$(gcc_get_s_dir)"
#
# Travis Tilley <lv@gentoo.org> (03 Sep 2004)
#
gcc_get_s_dir() {
	if [[ -n ${PRERELEASE} ]] ; then
		GCC_S=${WORKDIR}/gcc-${PRERELEASE}
	elif [[ -n ${SNAPSHOT} ]] ; then
		GCC_S=${WORKDIR}/gcc-${SNAPSHOT}
	else
		GCC_S=${WORKDIR}/gcc-${GCC_RELEASE_VER}
	fi

	echo "${GCC_S}"
}

# This function handles the basics of setting the SRC_URI for a gcc ebuild.
# To use, set SRC_URI with:
#
#	SRC_URI="$(get_gcc_src_uri)"
#
# Other than the variables normally set by portage, this function's behavior
# can be altered by setting the following:
#
#	SNAPSHOT
#			If set, this variable signals that we should be using a snapshot
#			of gcc from ftp://sources.redhat.com/pub/gcc/snapshots/. It is
#			expected to be in the format "YYYY-MM-DD". Note that if the ebuild
#			has a _pre suffix, this variable is ignored and the prerelease
#			tarball is used instead.
#
#	BRANCH_UPDATE
#			If set, this variable signals that we should be using the main
#			release tarball (determined by ebuild version) and applying a
#			CVS branch update patch against it. The location of this branch
#			update patch is assumed to be in ${GENTOO_TOOLCHAIN_BASE_URI}.
#			Just like with SNAPSHOT, this variable is ignored if the ebuild
#			has a _pre suffix.
#
#	PATCH_VER
#	PATCH_GCC_VER
#			This should be set to the version of the gentoo patch tarball.
#			The resulting filename of this tarball will be:
#			gcc-${PATCH_GCC_VER:-${GCC_RELEASE_VER}}-patches-${PATCH_VER}.tar.bz2
#
#	PIE_VER
#	PIE_GCC_VER
#	obsoleted: PIE_CORE
#			These variables control patching in various updates for the logic
#			controlling Position Independant Executables. PIE_VER is expected
#			to be the version of this patch, PIE_GCC_VER the gcc version of
#			the patch, and PIE_CORE (obsoleted) the actual filename of the patch.
#			An example:
#					PIE_VER="8.7.6.5"
#					PIE_GCC_VER="3.4.0"
#			The resulting filename of this tarball will be:
#			gcc-${PIE_GCC_VER:-${GCC_RELEASE_VER}}-piepatches-v${PIE_VER}.tar.bz2
#				old syntax (do not define PIE_CORE anymore):
#					PIE_CORE="gcc-3.4.0-piepatches-v${PIE_VER}.tar.bz2"
#
#	PP_VER
#	PP_GCC_VER
#	obsoleted: PP_FVER
#			These variables control patching in stack smashing protection
#			support. They both control the version of ProPolice to download.
#
#		PP_VER / PP_GCC_VER
#			Used to roll our own custom tarballs of ssp.
#		PP_FVER / PP_VER
#			Used for mirroring ssp straight from IBM.
#			PP_VER sets the version of the directory in which to find the
#			patch, and PP_FVER sets the version of the patch itself. For
#			example:
#					PP_VER="3_4"
#					PP_FVER="${PP_VER//_/.}-2"
#			would download gcc3_4/protector-3.4-2.tar.gz
#
#	HTB_VER
#	HTB_GCC_VER
#			These variables control whether or not an ebuild supports Herman
#			ten Brugge's bounds-checking patches. If you want to use a patch
#			for an older gcc version with a new gcc, make sure you set
#			HTB_GCC_VER to that version of gcc.
#
#	MAN_VER
#			The version of gcc for which we will download manpages. This will
#			default to ${GCC_RELEASE_VER}, but we may not want to pre-generate man pages
#			for prerelease test ebuilds for example. This allows you to
#			continue using pre-generated manpages from the last stable release.
#			If set to "none", this will prevent the downloading of manpages,
#			which is useful for individual library targets.
#
gentoo_urls() {
	local devspace="HTTP~lv/GCC/URI HTTP~eradicator/gcc/URI HTTP~vapier/dist/URI
	HTTP~halcy0n/patches/URI"
	devspace=${devspace//HTTP/http:\/\/dev.gentoo.org\/}
	echo mirror://gentoo/$1 ${devspace//URI/$1}
}
get_gcc_src_uri() {
	export PATCH_GCC_VER=${PATCH_GCC_VER:-${GCC_RELEASE_VER}}
	export UCLIBC_GCC_VER=${UCLIBC_GCC_VER:-${PATCH_GCC_VER}}
	export PIE_GCC_VER=${PIE_GCC_VER:-${GCC_RELEASE_VER}}
	export PP_GCC_VER=${PP_GCC_VER:-${GCC_RELEASE_VER}}
	export HTB_GCC_VER=${HTB_GCC_VER:-${GCC_RELEASE_VER}}

	[[ -n ${PIE_VER} ]] && \
		PIE_CORE=${PIE_CORE:-gcc-${PIE_GCC_VER}-piepatches-v${PIE_VER}.tar.bz2}

	# Set where to download gcc itself depending on whether we're using a
	# prerelease, snapshot, or release tarball.
	if [[ -n ${PRERELEASE} ]] ; then
		GCC_SRC_URI="ftp://gcc.gnu.org/pub/gcc/prerelease-${PRERELEASE}/gcc-${PRERELEASE}.tar.bz2"
	elif [[ -n ${SNAPSHOT} ]] ; then
		GCC_SRC_URI="ftp://sources.redhat.com/pub/gcc/snapshots/${SNAPSHOT}/gcc-${SNAPSHOT}.tar.bz2"
	else
		GCC_SRC_URI="mirror://gnu/gcc/gcc-${PV}/gcc-${GCC_RELEASE_VER}.tar.bz2"
		# we want all branch updates to be against the main release
		[[ -n ${BRANCH_UPDATE} ]] && \
			GCC_SRC_URI="${GCC_SRC_URI} $(gentoo_urls gcc-${GCC_RELEASE_VER}-branch-update-${BRANCH_UPDATE}.patch.bz2)"
	fi

	# propolice aka stack smashing protection
	if [[ -n ${PP_VER} ]] ; then
		if [[ -n ${PP_FVER} ]] ; then
			GCC_SRC_URI="${GCC_SRC_URI}
				!nossp? (
					http://www.research.ibm.com/trl/projects/security/ssp/gcc${PP_VER}/protector-${PP_FVER}.tar.gz
					$(gentoo_urls protector-${PP_FVER}.tar.gz)
				)"
		else
			GCC_SRC_URI="${GCC_SRC_URI} $(gentoo_urls gcc-${PP_GCC_VER}-ssp-${PP_VER}.tar.bz2)"
		fi
	fi

	# uclibc lovin
	[[ -n ${UCLIBC_VER} ]] && \
		GCC_SRC_URI="${GCC_SRC_URI} $(gentoo_urls gcc-${UCLIBC_GCC_VER}-uclibc-patches-${UCLIBC_VER}.tar.bz2)"

	# PERL cannot be present at bootstrap, and is used to build the man pages.
	# So... lets include some pre-generated ones, shall we?
	[[ -n ${MAN_VER} ]] && \
		GCC_SRC_URI="${GCC_SRC_URI} $(gentoo_urls gcc-${MAN_VER}-manpages.tar.bz2)"

	# various gentoo patches
	[[ -n ${PATCH_VER} ]] && \
		GCC_SRC_URI="${GCC_SRC_URI} $(gentoo_urls gcc-${PATCH_GCC_VER}-patches-${PATCH_VER}.tar.bz2)"

	# strawberry pie, Cappuccino and a Gauloises (it's a good thing)
	[[ -n ${PIE_VER} ]] && \
		GCC_SRC_URI="${GCC_SRC_URI} !nopie? ( $(gentoo_urls ${PIE_CORE}) )"

	# gcc bounds checking patch
	if [[ -n ${HTB_VER} ]] ; then
		local HTBFILE="bounds-checking-gcc-${HTB_GCC_VER}-${HTB_VER}.patch.bz2"
		GCC_SRC_URI="${GCC_SRC_URI}
			boundschecking? (
				mirror://sourceforge/boundschecking/${HTBFILE}
				http://web.inter.nl.net/hcc/Haj.Ten.Brugge/${HTBFILE}
				$(gentoo_urls ${HTBFILE})
			)"
	fi

	echo "${GCC_SRC_URI}"
}
S=$(gcc_get_s_dir)
SRC_URI=$(get_gcc_src_uri)
#---->> S + SRC_URI essentials >>----


#---->> support checks <<----

# The gentoo piessp patches allow for 3 configurations:
# 1) PIE+SSP by default
# 2) PIE by default
# 3) SSP by default
hardened_gcc_works() {
	if [[ $1 == "pie" ]] ; then
		want_pie || return 1
		hardened_gcc_is_stable pie && return 0
		if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
			hardened_gcc_check_unsupported pie && return 1
			ewarn "Allowing pie-by-default for an unstable arch ($(tc-arch))"
			return 0
		fi
		return 1
	elif [[ $1 == "ssp" ]] ; then
		[[ -z ${PP_VER} ]] && return 1
		hardened_gcc_is_stable ssp && return 0
		if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
			hardened_gcc_check_unsupported ssp && return 1
			ewarn "Allowing ssp-by-default for an unstable arch ($(tc-arch))"
			return 0
		fi
		return 1
	else
		# laziness ;)
		hardened_gcc_works pie || return 1
		hardened_gcc_works ssp || return 1
		return 0
	fi
}

hardened_gcc_is_stable() {
	if [[ $1 == "pie" ]] ; then
		# HARDENED_* variables are deprecated and here for compatibility
		local tocheck="${HARDENED_PIE_WORKS} ${HARDENED_GCC_WORKS}"
		if is_uclibc ; then
			tocheck="${tocheck} ${PIE_UCLIBC_STABLE}"
		else
			tocheck="${tocheck} ${PIE_GLIBC_STABLE}"
		fi
	elif [[ $1 == "ssp" ]] ; then
		# ditto
		local tocheck="${HARDENED_SSP_WORKS} ${HARDENED_GCC_WORKS}"
		if is_uclibc ; then
			tocheck="${tocheck} ${SSP_UCLIBC_STABLE}"
		else
			tocheck="${tocheck} ${SSP_STABLE}"
		fi
	else
		die "hardened_gcc_stable needs to be called with pie or ssp"
	fi

	hasq $(tc-arch) ${tocheck} && return 0
	return 1
}

hardened_gcc_check_unsupported() {
	local tocheck=""
	# if a variable is unset, we assume that all archs are unsupported. since
	# this function is never called if hardened_gcc_is_stable returns true,
	# this shouldn't cause problems... however, allowing this logic to work
	# even with the variables unset will break older ebuilds that dont use them.
	if [[ $1 == "pie" ]] ; then
		if is_uclibc ; then
			[[ -z ${PIE_UCLIBC_UNSUPPORTED} ]] && return 0
			tocheck="${tocheck} ${PIE_UCLIBC_UNSUPPORTED}"
		else
			[[ -z ${PIE_GLIBC_UNSUPPORTED} ]] && return 0
			tocheck="${tocheck} ${PIE_GLIBC_UNSUPPORTED}"
		fi
	elif [[ $1 == "ssp" ]] ; then
		if is_uclibc ; then
			[[ -z ${SSP_UCLIBC_UNSUPPORTED} ]] && return 0
			tocheck="${tocheck} ${SSP_UCLIBC_UNSUPPORTED}"
		else
			[[ -z ${SSP_UNSUPPORTED} ]] && return 0
			tocheck="${tocheck} ${SSP_UNSUPPORTED}"
		fi
	else
		die "hardened_gcc_check_unsupported needs to be called with pie or ssp"
	fi

	hasq $(tc-arch) ${tocheck} && return 0
	return 1
}

has_libssp() {
	[[ -e /$(get_libdir)/libssp.so ]] && return 0
	return 1
}

want_libssp() {
	[[ ${GCC_LIBSSP_SUPPORT} == "true" ]] || return 1
	has_libssp || return 1
	[[ -n ${PP_VER} ]] || return 1
	return 0
}

_want_stuff() {
	local var=$1 flag=$2
	[[ -z ${!var} ]] && return 1
	use ${flag} && return 0
	return 1
}
want_boundschecking() { _want_stuff HTB_VER boundschecking ; }
want_pie() { _want_stuff PIE_VER !nopie ; }
want_ssp() { _want_stuff PP_VER !nossp ; }

want_split_specs() {
	[[ ${SPLIT_SPECS} == "true" ]] && want_pie
}

# This function checks whether or not glibc has the support required to build
# Position Independant Executables with gcc.
glibc_have_pie() {
	if [[ ! -f ${ROOT}/usr/$(get_libdir)/Scrt1.o ]] ; then
		echo
		ewarn "Your glibc does not have support for pie, the file Scrt1.o is missing"
		ewarn "Please update your glibc to a proper version or disable hardened"
		echo
		return 1
	fi
}

# This function determines whether or not libc has been patched with stack
# smashing protection support.
libc_has_ssp() {
	local libc_prefix
	[[ $(tc-arch) == "ppc64" ]] && [[ -z ${ABI} ]] && libc_prefix="lib64"
	libc_prefix=${libc_prefix:-$(get_libdir)}
	libc_prefix=${libc_prefix:-lib}

	echo 'int main(){}' > "${T}"/libctest.c
	gcc "${T}"/libctest.c -lc -o libctest
	local libc_file=$(readelf -d libctest | grep 'NEEDED.*\[libc\.so[0-9\.]*\]' | awk '{print $NF}')
	libc_file=${libc_file:1:${#libc_file}-2}

	local my_libc=${ROOT}/${libc_prefix}/${libc_file}

	# Check for the libc to have the __guard symbols
	if  [[ -n $(readelf -s "${my_libc}" 2>/dev/null | \
	            grep 'OBJECT.*GLOBAL.*__guard') ]] && \
	    [[ -n $(readelf -s "${my_libc}" 2>/dev/null | \
	            grep 'FUNC.*GLOBAL.*__stack_smash_handler') ]]
	then
		return 0
	elif is_crosscompile ; then
		die "'${my_libc}' was detected w/out ssp, that sucks (a lot)"
	else
		return 1
	fi
}

# This is to make sure we don't accidentally try to enable support for a
# language that doesnt exist. GCC 3.4 supports f77, while 4.0 supports f95, etc.
#
# Travis Tilley <lv@gentoo.org> (26 Oct 2004)
#
gcc-lang-supported() {
	grep ^language=\"${1}\" ${S}/gcc/*/config-lang.in > /dev/null && return 0
	return 1
}

#----<< support checks >>----

#---->> specs + env.d logic <<----

# defaults to enable for all hardened toolchains
gcc_common_hard="-DEFAULT_RELRO -DEFAULT_BIND_NOW"

# configure to build with the hardened GCC specs as the default
make_gcc_hard() {
	if hardened_gcc_works ; then
		einfo "Updating gcc to use automatic PIE + SSP building ..."
		sed -e "s|^HARD_CFLAGS = |HARD_CFLAGS = -DEFAULT_PIE_SSP ${gcc_common_hard} |" \
			-i ${S}/gcc/Makefile.in || die "Failed to update gcc!"
	elif hardened_gcc_works pie ; then
		einfo "Updating gcc to use automatic PIE building ..."
		ewarn "SSP has not been enabled by default"
		sed -e "s|^HARD_CFLAGS = |HARD_CFLAGS = -DEFAULT_PIE ${gcc_common_hard} |" \
			-i ${S}/gcc/Makefile.in || die "Failed to update gcc!"
	elif hardened_gcc_works ssp ; then
		einfo "Updating gcc to use automatic SSP building ..."
		ewarn "PIE has not been enabled by default"
		sed -e "s|^HARD_CFLAGS = |HARD_CFLAGS = -DEFAULT_SSP ${gcc_common_hard} |" \
			-i ${S}/gcc/Makefile.in || die "Failed to update gcc!"
	else
		# do nothing if hardened isnt supported, but dont die either
		ewarn "hardened is not supported for this arch in this gcc version"
		ebeep
		return 0
	fi

	# rebrand to make bug reports easier
	release_version="${release_version/Gentoo/Gentoo Hardened}"
}

create_vanilla_specs_file() {
	pushd ${WORKDIR}/build/gcc > /dev/null
	if use hardened ; then
		# if using hardened, then we need to move xgcc out of the way
		# and recompile it
		cp Makefile Makefile.orig
		sed -i -e 's/^HARD_CFLAGS.*/HARD_CFLAGS = /g' Makefile
		mv xgcc xgcc.hard
		mv gcc.o gcc.o.hard
		make xgcc
		einfo "Creating a vanilla gcc specs file"
		./xgcc -dumpspecs > ${WORKDIR}/build/vanilla.specs
		# restore everything to normal
		mv gcc.o.hard gcc.o
		mv xgcc.hard xgcc
		mv Makefile.orig Makefile
	else
		einfo "Creating a vanilla gcc specs file"
		./xgcc -dumpspecs > ${WORKDIR}/build/vanilla.specs
	fi
	popd > /dev/null
}

create_hardened_specs_file() {
	pushd ${WORKDIR}/build/gcc > /dev/null
	if ! use hardened ; then
		# if not using hardened, then we need to move xgcc out of the way
		# and recompile it
		cp Makefile Makefile.orig
		sed -i -e "s/^HARD_CFLAGS.*/HARD_CFLAGS = -DEFAULT_PIE_SSP ${gcc_common_hard}/g" Makefile
		mv xgcc xgcc.vanilla
		mv gcc.o gcc.o.vanilla
		make xgcc
		einfo "Creating a hardened gcc specs file"
		./xgcc -dumpspecs > ${WORKDIR}/build/hardened.specs
		# restore everything to normal
		mv gcc.o.vanilla gcc.o
		mv xgcc.vanilla xgcc
		mv Makefile.orig Makefile
	else
		einfo "Creating a hardened gcc specs file"
		./xgcc -dumpspecs > ${WORKDIR}/build/hardened.specs
	fi
	popd > /dev/null
}

create_hardenednossp_specs_file() {
	pushd ${WORKDIR}/build/gcc > /dev/null
	cp Makefile Makefile.orig
	sed -i -e "s/^HARD_CFLAGS.*/HARD_CFLAGS = -DEFAULT_PIE ${gcc_common_hard}/g" Makefile
	mv xgcc xgcc.moo
	mv gcc.o gcc.o.moo
	make xgcc
	einfo "Creating a hardened no-ssp gcc specs file"
	./xgcc -dumpspecs > ${WORKDIR}/build/hardenednossp.specs
	# restore everything to normal
	mv gcc.o.moo gcc.o
	mv xgcc.moo xgcc
	mv Makefile.orig Makefile
	popd > /dev/null
}

create_hardenednopie_specs_file() {
	pushd ${WORKDIR}/build/gcc > /dev/null
	cp Makefile Makefile.orig
	sed -i -e "s/^HARD_CFLAGS.*/HARD_CFLAGS = -DEFAULT_SSP ${gcc_common_hard}/g" Makefile
	mv xgcc xgcc.moo
	mv gcc.o gcc.o.moo
	make xgcc
	einfo "Creating a hardened no-pie gcc specs file"
	./xgcc -dumpspecs > ${WORKDIR}/build/hardenednopie.specs
	# restore everything to normal
	mv gcc.o.moo gcc.o
	mv xgcc.moo xgcc
	mv Makefile.orig Makefile
	popd > /dev/null
}

create_hardenednopiessp_specs_file() {
	pushd ${WORKDIR}/build/gcc > /dev/null
	cp Makefile Makefile.orig
	sed -i -e "s/^HARD_CFLAGS.*/HARD_CFLAGS = ${gcc_common_hard}/g" Makefile
	mv xgcc xgcc.moo
	mv gcc.o gcc.o.moo
	make xgcc
	einfo "Creating a hardened no-pie no-ssp gcc specs file"
	./xgcc -dumpspecs > ${WORKDIR}/build/hardenednopiessp.specs
	# restore everything to normal
	mv gcc.o.moo gcc.o
	mv xgcc.moo xgcc
	mv Makefile.orig Makefile
	popd > /dev/null
}

split_out_specs_files() {
	if hardened_gcc_works ; then
		create_hardened_specs_file
		create_vanilla_specs_file
		create_hardenednossp_specs_file
		create_hardenednopie_specs_file
	elif hardened_gcc_works pie ; then
		create_vanilla_specs_file
		create_hardenednossp_specs_file
	elif hardened_gcc_works ssp ; then
		create_vanilla_specs_file
		create_hardenednopie_specs_file
	fi
	create_hardenednopiessp_specs_file
}

create_gcc_env_entry() {
	dodir /etc/env.d/gcc
	local gcc_envd_base="/etc/env.d/gcc/${CTARGET}-${GCC_CONFIG_VER}"

	if [[ -z $1 ]] ; then
		gcc_envd_file="${D}${gcc_envd_base}"
		# I'm leaving the following commented out to remind me that it
		# was an insanely -bad- idea. Stuff broke. GCC_SPECS isnt unset
		# on chroot or in non-toolchain.eclass gcc ebuilds!
		#gcc_specs_file="${LIBPATH}/specs"
		gcc_specs_file=""
	else
		gcc_envd_file="${D}${gcc_envd_base}-$1"
		gcc_specs_file="${LIBPATH}/$1.specs"
	fi

	echo "PATH=\"${BINPATH}\"" > ${gcc_envd_file}
	echo "ROOTPATH=\"${BINPATH}\"" >> ${gcc_envd_file}

	if use multilib && ! has_multilib_profile; then
		LDPATH="${LIBPATH}"
		for path in 32 64 o32 ; do
			[[ -d ${LIBPATH}/${path} ]] && LDPATH="${LDPATH}:${LIBPATH}/${path}"
		done
	else
		local MULTIDIR
		LDPATH="${LIBPATH}"

		# We want to list the default ABI's LIBPATH first so libtool
		# searches that directory first.  This is a temporary
		# workaround for libtool being stupid and using .la's from
		# conflicting ABIs by using the first one in the search path

		# XXX: This breaks when cross-compiling a native compiler (CBUILD != CHOST)

		local abi=${DEFAULT_ABI}
		local MULTIDIR=$(${XGCC} -B./ $(get_abi_CFLAGS ${abi}) --print-multi-directory)
		if [[ ${MULTIDIR} == "." ]] ; then
			LDPATH=${LIBPATH}
		else
			LDPATH=${LIBPATH}/${MULTIDIR}
		fi

		for abi in $(get_all_abis) ; do
			[[ ${abi} == ${DEFAULT_ABI} ]] && continue

			MULTIDIR=$(${XGCC} -B./ $(get_abi_CFLAGS ${abi}) --print-multi-directory)
			if [[ ${MULTIDIR} == "." ]] ; then
				LDPATH=${LDPATH}:${LIBPATH}
			else
				LDPATH=${LDPATH}:${LIBPATH}/${MULTIDIR}
			fi
		done
	fi

	echo "LDPATH=\"${LDPATH}\"" >> ${gcc_envd_file}

	local mbits
	CC=${XGCC} has_m32 && mbits="${mbits:+${mbits} }32"
	CC=${XGCC} has_m64 && mbits="${mbits:+${mbits} }64"
	echo "GCCBITS=\"${mbits}\"" >> ${gcc_envd_file}

	echo "MANPATH=\"${DATAPATH}/man\"" >> ${gcc_envd_file}
	echo "INFOPATH=\"${DATAPATH}/info\"" >> ${gcc_envd_file}
	echo "STDCXX_INCDIR=\"${STDCXX_INCDIR##*/}\"" >> ${gcc_envd_file}

	is_crosscompile && echo "CTARGET=${CTARGET}" >> ${gcc_envd_file}

	# Set which specs file to use
	[[ -n ${gcc_specs_file} ]] && echo "GCC_SPECS=\"${gcc_specs_file}\"" >> ${gcc_envd_file}
}

add_profile_eselect_conf() {
	local compiler_config_file=$1
	local abi=$2
	local specs=$3
	local gcc_specs_file
	local var

	if [[ -z ${specs} ]] ; then
		# I'm leaving the following commented out to remind me that it
		# was an insanely -bad- idea. Stuff broke. GCC_SPECS isnt unset
		# on chroot or in non-toolchain.eclass gcc ebuilds!
		#gcc_specs_file="${LIBPATH}/specs"
		gcc_specs_file=""

		if use hardened ; then
			specs="hardened"
		else
			specs="vanilla"
		fi
	else
		gcc_specs_file="${LIBPATH}/${specs}.specs"
	fi

	echo >> ${compiler_config_file}
	if ! is_multilib ; then
		echo "[${specs}]" >> ${compiler_config_file}
		echo "	ctarget=${CTARGET}" >> ${compiler_config_file}
	else
		echo "[${abi}-${specs}]" >> ${compiler_config_file}
		var="CTARGET_${abi}"
		if [[ -n ${!var} ]] ; then
			echo "	ctarget=${!var}" >> ${compiler_config_file}
		else
			var="CHOST_${abi}"
			if [[ -n ${!var} ]] ; then
				echo "	ctarget=${!var}" >> ${compiler_config_file}
			else
				echo "	ctarget=${CTARGET}" >> ${compiler_config_file}
			fi
		fi
	fi

	local MULTIDIR=$(${XGCC} -B./ $(get_abi_CFLAGS ${abi}) --print-multi-directory)
	local LDPATH=${LIBPATH}
	if [[ ${MULTIDIR} != "." ]] ; then
		LDPATH="${LIBPATH}/${MULTIDIR}"
	fi

	echo "	ldpath=${LDPATH}" >> ${compiler_config_file}

	if [[ -n ${gcc_specs_file} ]] ; then
		echo "	specs=${gcc_specs_file}" >> ${compiler_config_file}
	fi

	var="CFLAGS_${abi}"
	if [[ -n ${!var} ]] ; then
		echo "	cflags=${!var}" >> ${compiler_config_file}
	fi
}

create_eselect_conf() {
	local config_dir="/etc/eselect/compiler"
	local compiler_config_file="${D}/${config_dir}/${CTARGET}-${GCC_CONFIG_VER}.conf"
	local abi

	dodir ${config_dir}

	echo "[global]" > ${compiler_config_file}
	echo "	version=${CTARGET}-${GCC_CONFIG_VER}" >> ${compiler_config_file}
	echo "	binpath=${BINPATH}" >> ${compiler_config_file}
	echo "	manpath=${DATAPATH}/man" >> ${compiler_config_file}
	echo "	infopath=${DATAPATH}/info" >> ${compiler_config_file}
	echo "	alias_cc=gcc" >> ${compiler_config_file}
	echo "	stdcxx_incdir=${STDCXX_INCDIR##*/}" >> ${compiler_config_file}
	echo "	bin_prefix=${CTARGET}" >> ${compiler_config_file}

	if [[ -x "${D}/${BINPATH}/${CTARGET}-g77" ]] ; then
		echo "	alias_gfortran=g77" >> ${compiler_config_file}
	elif [[ -x "${D}/${BINPATH}/${CTARGET}-gfortran" ]] ; then
		echo "	alias_g77=gfortran" >> ${compiler_config_file}
	fi

	for abi in $(get_all_abis) ; do
		add_profile_eselect_conf "${compiler_config_file}" "${abi}"

		if want_split_specs ; then
			if use hardened ; then
				add_profile_eselect_conf "${compiler_config_file}" "${abi}" vanilla
			elif hardened_gcc_works ; then
				add_profile_eselect_conf "${compiler_config_file}" "${abi}" hardened
			fi

			if hardened_gcc_works || hardened_gcc_works pie ; then
				add_profile_eselect_conf "${compiler_config_file}" "${abi}" hardenednossp
			fi

			if hardened_gcc_works || hardened_gcc_works ssp ; then
				add_profile_eselect_conf "${compiler_config_file}" "${abi}" hardenednopie
			fi

			add_profile_eselect_conf "${compiler_config_file}" "${abi}" hardenednopiessp
		fi
	done
}

#----<< specs + env.d logic >>----

#---->> pkg_* <<----
gcc_pkg_setup() {
	if [[ ( $(tc-arch) == "amd64" || $(tc-arch) == "ppc64" ) && ( ${LD_PRELOAD} == "/lib/libsandbox.so" || ${LD_PRELOAD} == "/usr/lib/libsandbox.so" ) ]] && is_multilib ; then
		eerror "Sandbox in your installed portage does not support compilation."
		eerror "of a multilib gcc.  Please set FEATURES=-sandbox and try again."
		eerror "After you have a multilib gcc, re-emerge portage to have a working sandbox."
		die "No 32bit sandbox.  Retry with FEATURES=-sandbox."
	fi

	if [[ ${ETYPE} == "gcc-compiler" ]] ; then
		case $(tc-arch) in
		mips)
			# Must compile for mips64-linux target if we want n32/n64 support
			case "${CTARGET}" in
				mips64*) ;;
				*)
					if use n32 || use n64; then
						eerror "n32/n64 can only be used when target host is mips64*-*-linux-*";
						die "Invalid USE flags for CTARGET ($CTARGET)";
					fi
				;;
			esac

			#cannot have both n32 & n64 without multilib
			if use n32 && use n64 && ! is_multilib; then
				eerror "Please enable multilib if you want to use both n32 & n64";
				die "Invalid USE flag combination";
			fi
		;;
		esac

		# Setup variables which would normally be in the profile
		if is_crosscompile ; then
			multilib_env ${CTARGET}
			if ! use multilib ; then
				MULTILIB_ABIS=${DEFAULT_ABI}
			fi
		fi

		# we dont want to use the installed compiler's specs to build gcc!
		unset GCC_SPECS
	fi

	want_libssp && libc_has_ssp && \
		die "libssp cannot be used with a glibc that has been patched to provide ssp symbols"
}

gcc-compiler_pkg_preinst() {
	:
}

gcc-compiler_pkg_postinst() {
	export LD_LIBRARY_PATH=${LIBPATH}:${LD_LIBRARY_PATH}
	do_gcc_config

	echo
	einfo "If you have issues with packages unable to locate libstdc++.la,"
	einfo "then try running 'fix_libtool_files.sh' on the old gcc versions."
	echo

	# If our gcc-config version doesn't like '-' in it's version string,
	# tell our users that gcc-config will yell at them, but it's all good.
	if ! has_version '>=sys-devel/gcc-config-1.3.10-r1' && [[ ${GCC_CONFIG_VER/-/} != ${GCC_CONFIG_VER} ]] ; then
		ewarn "Your version of gcc-config will issue about having an invalid profile"
		ewarn "when switching to this profile.  It is safe to ignore this warning,"
		ewarn "and this problem has been corrected in >=sys-devel/gcc-config-1.3.10-r1."
	fi

	if ! is_crosscompile && ! use multislot && [[ ${GCCMAJOR}.${GCCMINOR} == 3.4 ]] ; then
		echo
		einfo "You should make sure to rebuild all your C++ packages when"
		einfo "upgrading between different versions of gcc.  For example,"
		einfo "when moving to gcc-3.4 from gcc-3.3, emerge gentoolkit and run:"
		einfo "  # revdep-rebuild --library libstdc++.so.5"
		echo
		einfo "For more information on the steps to take when upgrading "
		einfo "from gcc-3.3 please refer to: "
		einfo "http://www.gentoo.org/proj/en/base/x86/gcc-upgrading-guide.xml"
		echo
	fi
}

gcc-compiler_pkg_prerm() {
	# TODO: flesh this out when I care
	return 0
}

gcc-compiler_pkg_postrm() {
	# to make our lives easier (and saner), we do the fix_libtool stuff here.
	# rather than checking SLOT's and trying in upgrade paths, we just see if
	# the common libstdc++.la exists in the ${LIBPATH} of the gcc that we are
	# unmerging.  if it does, that means this was a simple re-emerge.

	# clean up the cruft left behind by cross-compilers
	if is_crosscompile ; then
		if [[ -z $(ls "${ROOT}"/etc/env.d/gcc/${CTARGET}* 2>/dev/null) ]] ; then
			rm -f "${ROOT}"/etc/env.d/gcc/config-${CTARGET}
			rm -f "${ROOT}"/etc/env.d/??gcc-${CTARGET}
			rm -f "${ROOT}"/usr/bin/${CTARGET}-{gcc,{g,c}++}{,32,64}
		fi
		return 0
	fi

	# ROOT isnt handled by the script
	[[ ${ROOT} != "/" ]] && return 0

	if [[ ! -e ${LIBPATH}/libstdc++.la ]] ; then
		/sbin/fix_libtool_files.sh ${GCC_RELEASE_VER}
		[[ -z ${BRANCH_UPDATE} ]] || /sbin/fix_libtool_files.sh ${GCC_RELEASE_VER}-${BRANCH_UPDATE}
	fi

	return 0
}

#---->> pkg_* <<----

#---->> src_* <<----

# generic GCC src_unpack, to be called from the ebuild's src_unpack.
# BIG NOTE regarding hardened support: ebuilds with support for hardened are
# expected to export the following variable:
#
#	HARDENED_GCC_WORKS
#			This variable should be set to the archs on which hardened should
#			be allowed. For example: HARDENED_GCC_WORKS="x86 sparc amd64"
#			This allows for additional archs to be supported by hardened when
#			ready.
#
# Travis Tilley <lv@gentoo.org> (03 Sep 2004)
#
gcc-compiler_src_unpack() {
	# fail if using pie patches, building hardened, and glibc doesnt have
	# the necessary support
	want_pie && use hardened && glibc_have_pie

	if use hardened ; then
		einfo "updating configuration to build hardened GCC"
		make_gcc_hard || die "failed to make gcc hard"
	fi
}
gcc-library_src_unpack() {
	:
}
guess_patch_type_in_dir() {
	[[ -n $(ls "$1"/*.bz2 2>/dev/null) ]] \
		&& EPATCH_SUFFIX="patch.bz2" \
		|| EPATCH_SUFFIX="patch"
}
gcc_src_unpack() {
	local release_version="Gentoo ${PVR}"

	[[ -z ${UCLIBC_VER} ]] && is_uclibc && die "Sorry, this version does not support uClibc"

	gcc_quick_unpack
	exclude_gcc_patches

	cd ${S:=$(gcc_get_s_dir)}

	if ! use vanilla ; then
		if [[ -n ${PATCH_VER} ]] ; then
			guess_patch_type_in_dir "${WORKDIR}"/patch
			EPATCH_MULTI_MSG="Applying Gentoo patches ..." \
			epatch "${WORKDIR}"/patch
		fi
		if [[ -n ${UCLIBC_VER} ]] ; then
			guess_patch_type_in_dir "${WORKDIR}"/uclibc
			EPATCH_MULTI_MSG="Applying uClibc patches ..." \
			epatch "${WORKDIR}"/uclibc
		fi
	fi
	do_gcc_HTB_patches
	do_gcc_SSP_patches
	do_gcc_PIE_patches

	${ETYPE}_src_unpack || die "failed to ${ETYPE}_src_unpack"

	fix_files=""
	for x in contrib/test_summary libstdc++-v3/scripts/check_survey.in ; do
		[[ -e ${x} ]] && fix_files="${fix_files} ${x}"
	done
	ht_fix_file ${fix_files} */configure *.sh

	if ! is_crosscompile && is_multilib && \
	   [[ ( $(tc-arch) == "amd64" || $(tc-arch) == "ppc64" ) && -z ${SKIP_MULTILIB_HACK} ]] ; then
		disgusting_gcc_multilib_HACK || die "multilib hack failed"
	fi

	local version_string=${GCC_CONFIG_VER}

	# Backwards support... add the BRANCH_UPDATE for 3.3.5-r1 and 3.4.3-r1
	# which set it directly rather than using ${PV}
	if [[ ${PVR} == "3.3.5-r1" || ${PVR} = "3.4.3-r1" ]] ; then
		 version_string="${version_string} ${BRANCH_UPDATE}"
	fi

	version_string="${version_string} (${release_version})"
	einfo "patching gcc version: ${version_string}"
	gcc_version_patch "${version_string}"

	# Misdesign in libstdc++ (Redhat)
	if [[ ${GCCMAJOR} -ge 3 ]] && [[ -e ${S}/libstdc++-v3/config/cpu/i486/atomicity.h ]] ; then
		cp -pPR "${S}"/libstdc++-v3/config/cpu/i{4,3}86/atomicity.h
	fi

	# disable --as-needed from being compiled into gcc specs
	# natively when using a gcc version < 3.4.4
	# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14992
	if [[ ${GCCMAJOR} < 3 ]] || \
	   [[ ${GCCMAJOR}.${GCCMINOR} < 3.4 ]] || \
	   [[ ${GCCMAJOR}.${GCCMINOR}.${GCCMICRO} < 3.4.4 ]]
	then
		sed -i -e s/HAVE_LD_AS_NEEDED/USE_LD_AS_NEEDED/g "${S}"/gcc/config.in
	fi

	# Fixup libtool to correctly generate .la files with portage
	cd "${S}"
	elibtoolize --portage --shallow --no-uclibc

	gnuconfig_update

	# update configure files
	einfo "Fixing misc issues in configure files"
	for f in $(grep -l 'autoconf version 2.13' $(find "${S}" -name configure)) ; do
		ebegin "  Updating ${f/${S}\/}"
		patch "${f}" "${GCC_FILESDIR}"/gcc-configure-LANG.patch >& "${T}"/configure-patch.log \
			|| eerror "Please file a bug about this"
		eend $?
	done

	./contrib/gcc_update --touch &> /dev/null

	disable_multilib_libjava || die "failed to disable multilib java"
}

gcc-library-configure() {
	# multilib support
	[[ ${GCC_TARGET_NO_MULTILIB} == "true" ]] \
		&& confgcc="${confgcc} --disable-multilib" \
		|| confgcc="${confgcc} --enable-multilib"
}

gcc-compiler-configure() {
	# multilib support
	if is_multilib || [[ ${CTARGET} == "avr" ]] ; then
		confgcc="${confgcc} --enable-multilib"
	else
		confgcc="${confgcc} --disable-multilib"
	fi

	confgcc="${confgcc} $(use_enable mudflap libmudflap)"

	# GTK+ is preferred over xlib in 3.4.x (xlib is unmaintained
	# right now). Much thanks to <csm@gnu.org> for the heads up.
	# Travis Tilley <lv@gentoo.org>  (11 Jul 2004)
	if ! is_gcj ; then
		confgcc="${confgcc} --disable-libgcj"
	elif use gtk ; then
		confgcc="${confgcc} --enable-java-awt=gtk"
	fi

	case $(tc-arch) in
		# Add --with-abi flags to set default MIPS ABI
		mips)
		local mips_abi=""
		use n64 && mips_abi="--with-abi=64"
		use n32 && mips_abi="--with-abi=n32"
		[[ -n ${mips_abi} ]] && confgcc="${confgcc} ${mips_abi}"
		;;
		# Enable sjlj exceptions for backward compatibility on hppa
		hppa)
			[[ ${PV:0:1} == "3" ]] && \
			confgcc="${confgcc} --enable-sjlj-exceptions"
		;;
	esac

	GCC_LANG="c"
	is_cxx && GCC_LANG="${GCC_LANG},c++"
	is_gcj && GCC_LANG="${GCC_LANG},java"
	if is_objc ; then
		GCC_LANG="${GCC_LANG},objc"
		use objc-gc && confgcc="${confgcc} --enable-objc-gc"
	fi

	# fortran support just got sillier! the lang value can be f77 for
	# fortran77, f95 for fortran95, or just plain old fortran for the
	# currently supported standard depending on gcc version.
	is_fortran && GCC_LANG="${GCC_LANG},fortran"
	is_f77 && GCC_LANG="${GCC_LANG},f77"
	is_f95 && GCC_LANG="${GCC_LANG},f95"

	# We do NOT want 'ADA support' in here!
	# is_ada && GCC_LANG="${GCC_LANG},ada"

	einfo "configuring for GCC_LANG: ${GCC_LANG}"
}

# Other than the variables described for gcc_setup_variables, the following
# will alter tha behavior of gcc_do_configure:
#
#	CTARGET
#	CBUILD
#			Enable building for a target that differs from CHOST
#
#	GCC_TARGET_NO_MULTILIB
#			Disable multilib. Useful when building single library targets.
#
#	GCC_LANG
#			Enable support for ${GCC_LANG} languages. defaults to just "c"
#
# Travis Tilley <lv@gentoo.org> (04 Sep 2004)
#
gcc_do_configure() {
	local confgcc

	# Set configuration based on path variables
	confgcc="${confgcc} \
		--prefix=${PREFIX} \
		--bindir=${BINPATH} \
		--includedir=${INCLUDEPATH} \
		--datadir=${DATAPATH} \
		--mandir=${DATAPATH}/man \
		--infodir=${DATAPATH}/info \
		--with-gxx-include-dir=${STDCXX_INCDIR}"

	# All our cross-compile logic goes here !  woo !
	confgcc="${confgcc} --host=${CHOST}"
	if is_crosscompile || tc-is-cross-compiler ; then
		# Straight from the GCC install doc:
		# "GCC has code to correctly determine the correct value for target
		# for nearly all native systems. Therefore, we highly recommend you
		# not provide a configure target when configuring a native compiler."
		confgcc="${confgcc} --target=${CTARGET}"
	fi
	[[ -n ${CBUILD} ]] && confgcc="${confgcc} --build=${CBUILD}"

	# ppc altivec support
	confgcc="${confgcc} $(use_enable altivec)"

	[[ ${CTARGET} == *-softfloat-* ]] && confgcc="${confgcc} --with-float=soft"

	# Native Language Support
	if use nls && ! use build ; then
		confgcc="${confgcc} --enable-nls --without-included-gettext"
	else
		confgcc="${confgcc} --disable-nls"
	fi

	# reasonably sane globals (hopefully)
	# --disable-libunwind-exceptions needed till unwind sections get fixed. see ps.m for details
	confgcc="${confgcc} \
		--with-system-zlib \
		--disable-checking \
		--disable-werror \
		--disable-libunwind-exceptions"

	# etype specific configuration
	einfo "running ${ETYPE}-configure"
	${ETYPE}-configure || die

	# if not specified, assume we are building for a target that only
	# requires C support
	GCC_LANG=${GCC_LANG:-c}
	confgcc="${confgcc} --enable-languages=${GCC_LANG}"

	if is_crosscompile ; then
		# When building a stage1 cross-compiler (just C compiler), we have to
		# disable a bunch of features or gcc goes boom
		local needed_libc=""
		case ${CTARGET} in
			*-dietlibc) needed_libc=dietlibc;;
			*-freebsd*) needed_libc=freebsd-lib;;
			*-gnu)      needed_libc=glibc;;
			*-klibc)    needed_libc=klibc;;
			*-uclibc)   needed_libc=uclibc;;
			avr)        confgcc="${confgcc} --enable-shared --disable-threads";;
		esac
		if [[ -n ${needed_libc} ]] ; then
			if ! has_version ${CATEGORY}/${needed_libc} ; then
				confgcc="${confgcc} --disable-shared --disable-threads --without-headers"
			elif built_with_use ${CATEGORY}/${needed_libc} _E_CROSS_HEADERS_ONLY ; then
				confgcc="${confgcc} --disable-shared --with-sysroot=${PREFIX}/${CTARGET}"
			else
				confgcc="${confgcc} --with-sysroot=${PREFIX}/${CTARGET}"
			fi
		fi
	else
		confgcc="${confgcc} --enable-shared --enable-threads=posix"
	fi
	# __cxa_atexit is "essential for fully standards-compliant handling of
	# destructors", but apparently requires glibc.
	# --enable-sjlj-exceptions : currently the unwind stuff seems to work
	# for statically linked apps but not dynamic
	# so use setjmp/longjmp exceptions by default
	if is_uclibc ; then
		confgcc="${confgcc} --disable-__cxa_atexit --enable-target-optspace"
		[[ ${GCCMAJOR}.${GCCMINOR} == 3.3 ]] && \
			confgcc="${confgcc} --enable-sjlj-exceptions"
	else
		confgcc="${confgcc} --enable-__cxa_atexit"
	fi
	[[ ${CTARGET} == *-gnu* ]] && confgcc="${confgcc} --enable-clocale=gnu"
	[[ ${CTARGET} == *-uclibc* ]] && [[ ${GCCMAJOR}.${GCCMINOR} > 3.3 ]] \
		&& confgcc="${confgcc} --enable-clocale=uclibc"

	# Nothing wrong with a good dose of verbosity
	echo
	einfo "PREFIX:          ${PREFIX}"
	einfo "BINPATH:         ${BINPATH}"
	einfo "LIBPATH:         ${LIBPATH}"
	einfo "DATAPATH:        ${DATAPATH}"
	einfo "STDCXX_INCDIR:   ${STDCXX_INCDIR}"
	echo
	einfo "Configuring GCC with: ${confgcc//--/\n\t--} ${@} ${EXTRA_ECONF}"
	echo

	# Build in a separate build tree
	mkdir -p "${WORKDIR}"/build
	pushd "${WORKDIR}"/build > /dev/null

	# and now to do the actual configuration
	addwrite /dev/zero
	"${S}"/configure ${confgcc} $@ ${EXTRA_ECONF} \
		|| die "failed to run configure"

	# return to whatever directory we were in before
	popd > /dev/null
}

# This function accepts one optional argument, the make target to be used.
# If ommitted, gcc_do_make will try to guess whether it should use all,
# profiledbootstrap, or bootstrap-lean depending on CTARGET and arch. An
# example of how to use this function:
#
#	gcc_do_make all-target-libstdc++-v3
#
# In addition to the target to be used, the following variables alter the
# behavior of this function:
#
#	LDFLAGS
#			Flags to pass to ld
#
#	STAGE1_CFLAGS
#			CFLAGS to use during stage1 of a gcc bootstrap
#
#	BOOT_CFLAGS
#			CFLAGS to use during stages 2+3 of a gcc bootstrap.
#
# Travis Tilley <lv@gentoo.org> (04 Sep 2004)
#
gcc_do_make() {
	# Fix for libtool-portage.patch
	local OLDS=${S}
	S=${WORKDIR}/build

	# Set make target to $1 if passed
	[[ -n $1 ]] && GCC_MAKE_TARGET=$1
	# default target
	if is_crosscompile || tc-is-cross-compiler ; then
		# 3 stage bootstrapping doesnt quite work when you cant run the
		# resulting binaries natively ^^;
		GCC_MAKE_TARGET=${GCC_MAKE_TARGET-all}
	elif [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" || $(tc-arch) == "ppc64" ]] \
	     && [[ ${GCCMAJOR}.${GCCMINOR} > 3.3 ]]
	then
		GCC_MAKE_TARGET=${GCC_MAKE_TARGET-profiledbootstrap}
	else
		GCC_MAKE_TARGET=${GCC_MAKE_TARGET-bootstrap-lean}
	fi

	# the gcc docs state that parallel make isnt supported for the
	# profiledbootstrap target, as collisions in profile collecting may occur.
	[[ ${GCC_MAKE_TARGET} == "profiledbootstrap" ]] && export MAKEOPTS="${MAKEOPTS} -j1"

	# boundschecking seems to introduce parallel build issues
	want_boundschecking && export MAKEOPTS="${MAKEOPTS} -j1"

	if [[ ${GCC_MAKE_TARGET} == "all" ]] ; then
		STAGE1_CFLAGS=${STAGE1_CFLAGS-"${CFLAGS}"}
	elif [[ $(gcc-version) == "3.4" && ${GCC_BRANCH_VER} == "3.4" ]] && has_hardened ; then
		# See bug #79852
		STAGE1_CFLAGS=${STAGE1_CFLAGS-"-O2"}
	else
		STAGE1_CFLAGS=${STAGE1_CFLAGS-"-O"}
	fi

	if is_crosscompile; then
		# In 3.4, BOOT_CFLAGS is never used on a crosscompile...
		# but I'll leave this in anyways as someone might have had
		# some reason for putting it in here... --eradicator
		BOOT_CFLAGS=${BOOT_CFLAGS-"-O2"}
	else
		# we only want to use the system's CFLAGS if not building a
		# cross-compiler.
		BOOT_CFLAGS=${BOOT_CFLAGS-"$(get_abi_CFLAGS) ${CFLAGS}"}
	fi

	pushd ${WORKDIR}/build
	einfo "Running make LDFLAGS=\"${LDFLAGS}\" STAGE1_CFLAGS=\"${STAGE1_CFLAGS}\" LIBPATH=\"${LIBPATH}\" BOOT_CFLAGS=\"${BOOT_CFLAGS}\" ${GCC_MAKE_TARGET}"

	emake \
		LDFLAGS="${LDFLAGS}" \
		STAGE1_CFLAGS="${STAGE1_CFLAGS}" \
		LIBPATH="${LIBPATH}" \
		BOOT_CFLAGS="${BOOT_CFLAGS}" \
		${GCC_MAKE_TARGET} \
		|| die "emake failed with ${GCC_MAKE_TARGET}"

	if ! use build && ! is_crosscompile && ! use nocxx ; then
		if type -p doxygen > /dev/null ; then
			cd "${CTARGET}"/libstdc++-v3
			make doxygen-man || ewarn "failed to make docs"
		else
			ewarn "Skipping libstdc++ manpage generation since you don't have doxygen installed"
		fi
	fi

	popd
}

# This function will add ${GCC_CONFIG_VER} to the names of all shared libraries in the
# directory specified to avoid filename collisions between multiple slotted
# non-versioned gcc targets. If no directory is specified, it is assumed that
# you want -all- shared objects to have ${GCC_CONFIG_VER} added. Example
#
#	add_version_to_shared ${D}/usr/$(get_libdir)
#
# Travis Tilley <lv@gentoo.org> (05 Sep 2004)
#
add_version_to_shared() {
	local sharedlib sharedlibdir
	[[ -z $1 ]] \
		&& sharedlibdir=${D} \
		|| sharedlibdir=$1

	for sharedlib in $(find ${sharedlibdir} -name *.so.*) ; do
		if [[ ! -L ${sharedlib} ]] ; then
			einfo "Renaming `basename "${sharedlib}"` to `basename "${sharedlib/.so*/}-${GCC_CONFIG_VER}.so.${sharedlib/*.so./}"`"
			mv "${sharedlib}" "${sharedlib/.so*/}-${GCC_CONFIG_VER}.so.${sharedlib/*.so./}" \
				|| die
			pushd `dirname "${sharedlib}"` > /dev/null || die
			ln -sf "`basename "${sharedlib/.so*/}-${GCC_CONFIG_VER}.so.${sharedlib/*.so./}"`" \
				"`basename "${sharedlib}"`" || die
			popd > /dev/null || die
		fi
	done
}

# This is mostly a stub function to be overwritten in an ebuild
gcc_do_filter_flags() {
	strip-flags

	# In general gcc does not like optimization, and add -O2 where
	# it is safe.  This is especially true for gcc 3.3 + 3.4
	replace-flags -O? -O2

	# ... sure, why not?
	strip-unsupported-flags

	# dont want to funk ourselves
	filter-flags '-mabi*' -m31 -m32 -m64

	case ${GCC_BRANCH_VER} in
	3.2|3.3)
		case $(tc-arch) in
			x86)   filter-flags '-mtune=*';;
			amd64) filter-flags '-mtune=*'
			       replace-cpu-flags k8 athlon64 opteron i686;;
		esac
		;;
	3.4|4.*)
		case $(tc-arch) in
			x86|amd64) filter-flags '-mcpu=*';;
		esac
		;;
	esac

	# Compile problems with these (bug #6641 among others)...
	#filter-flags "-fno-exceptions -fomit-frame-pointer -fforce-addr"

	# CFLAGS logic (verified with 3.4.3):
	# CFLAGS:
	#   This conflicts when creating a crosscompiler, so set to a sane
	#     default in this case:
	#   used in ./configure and elsewhere for the native compiler
	#   used by gcc when creating libiberty.a
	#   used by xgcc when creating libstdc++ (and probably others)!
	#     this behavior should be removed...
	#
	# CXXFLAGS:
	#   used by xgcc when creating libstdc++
	#
	# STAGE1_CFLAGS (not used in creating a crosscompile gcc):
	#   used by ${CHOST}-gcc for building stage1 compiler
	#
	# BOOT_CFLAGS (not used in creating a crosscompile gcc):
	#   used by xgcc for building stage2/3 compiler

	if is_crosscompile ; then
		# Set this to something sane for both native and target
		CFLAGS="-O2 -pipe"

		local VAR="CFLAGS_"${CTARGET//-/_}
		CXXFLAGS=${!VAR}
	fi

	export GCJFLAGS=${GCJFLAGS:-${CFLAGS}}
}

gcc_src_compile() {
	gcc_do_filter_flags
	einfo "CFLAGS=\"${CFLAGS}\""
	einfo "CXXFLAGS=\"${CXXFLAGS}\""

	# Build in a separate build tree
	mkdir -p ${WORKDIR}/build
	pushd ${WORKDIR}/build > /dev/null

	# Install our pre generated manpages if we do not have perl ...
	[[ ! -x /usr/bin/perl ]] && [[ -n ${MAN_VER} ]] && \
		unpack gcc-${MAN_VER}-manpages.tar.bz2

	einfo "Configuring ${PN} ..."
	gcc_do_configure

	touch ${S}/gcc/c-gperf.h

	# Do not make manpages if we do not have perl ...
	[[ ! -x /usr/bin/perl ]] \
		&& find "${WORKDIR}"/build -name '*.[17]' | xargs touch

	einfo "Compiling ${PN} ..."
	gcc_do_make ${GCC_MAKE_TARGET}

	# Do not create multiple specs files for PIE+SSP if boundschecking is in
	# USE, as we disable PIE+SSP when it is.
	if [[ ${ETYPE} == "gcc-compiler" ]] && want_split_specs ; then
		split_out_specs_files || die "failed to split out specs"
	fi

	popd > /dev/null
}

gcc_src_test() {
	cd "${WORKDIR}"/build
	make check || ewarn "check failed and that sucks :("
}

gcc-library_src_install() {
	einfo "Installing ${PN} ..."
	# Do the 'make install' from the build directory
	cd "${WORKDIR}"/build
	S=${WORKDIR}/build \
	make DESTDIR="${D}" \
		prefix=${PREFIX} \
		bindir=${BINPATH} \
		includedir=${LIBPATH}/include \
		datadir=${DATAPATH} \
		mandir=${DATAPATH}/man \
		infodir=${DATAPATH}/info \
		LIBPATH="${LIBPATH}" \
		${GCC_INSTALL_TARGET} || die

	if [[ ${GCC_LIB_COMPAT_ONLY} == "true" ]] ; then
		rm -rf "${D}"${INCLUDEPATH}
		rm -rf "${D}"${DATAPATH}
		pushd "${D}"${LIBPATH}/
		rm *.a *.la *.so
		popd
	fi

	if [[ -n ${GCC_LIB_USE_SUBDIR} ]] ; then
		mkdir -p ${WORKDIR}/${GCC_LIB_USE_SUBDIR}/
		mv "${D}"${LIBPATH}/* ${WORKDIR}/${GCC_LIB_USE_SUBDIR}/
		mv ${WORKDIR}/${GCC_LIB_USE_SUBDIR}/ "${D}"${LIBPATH}

		dodir /etc/env.d
		echo "LDPATH=\"${LIBPATH}/${GCC_LIB_USE_SUBDIR}/\"" >> "${D}"/etc/env.d/99${PN}
	fi

	if [[ ${GCC_VAR_TYPE} == "non-versioned" ]] ; then
		# if we're not using versioned directories, we need to use versioned
		# filenames.
		add_version_to_shared
	fi
}

gcc-compiler_src_install() {
	local x=

	# Do allow symlinks in ${PREFIX}/lib/gcc-lib/${CHOST}/${GCC_CONFIG_VER}/include as
	# this can break the build.
	for x in "${WORKDIR}"/build/gcc/include/* ; do
		[[ -L ${x} ]] && rm -f "${x}"
	done
	# Remove generated headers, as they can cause things to break
	# (ncurses, openssl, etc).
	for x in $(find "${WORKDIR}"/build/gcc/include/ -name '*.h') ; do
		grep -q 'It has been auto-edited by fixincludes from' "${x}" \
			&& rm -f "${x}"
	done

	einfo "Installing GCC..."
	# Do the 'make install' from the build directory
	cd ${WORKDIR}/build
	S=${WORKDIR}/build \
	make DESTDIR="${D}" install || die
	# Punt some tools which are really only useful while building gcc
	rm -r "${D}${LIBEXECPATH}"/install-tools
	# This one comes with binutils
	find "${D}" -name libiberty.a -exec rm -f {} \;

	# Move the libraries to the proper location
	gcc_movelibs

	# Now do the fun stripping stuff
	env RESTRICT="" STRIP=${CHOST}-strip prepstrip "${D}${BINPATH}" "${D}${LIBEXECPATH}"
	env RESTRICT="" STRIP=${CTARGET}-strip prepstrip "${D}${LIBPATH}"

	# Basic sanity check
	is_crosscompile || [[ -r ${D}${BINPATH}/gcc ]] || die "gcc not found in ${D}"

	dodir /lib /usr/bin
	dodir /etc/env.d/gcc
	create_gcc_env_entry

	if want_split_specs ; then
		if use hardened ; then
			create_gcc_env_entry vanilla
		fi
		! use hardened && hardened_gcc_works && create_gcc_env_entry hardened
		if hardened_gcc_works || hardened_gcc_works pie ; then
			create_gcc_env_entry hardenednossp
		fi
		if hardened_gcc_works || hardened_gcc_works ssp ; then
			create_gcc_env_entry hardenednopie
		fi
		create_gcc_env_entry hardenednopiessp

		cp ${WORKDIR}/build/*.specs "${D}"${LIBPATH}
	fi

	# Make sure we dont have stuff lying around that
	# can nuke multiple versions of gcc
	if ! use build ; then
		cd ${D}${LIBPATH}

		# Move Java headers to compiler-specific dir
		for x in ${D}${PREFIX}/include/gc*.h ${D}${PREFIX}/include/j*.h ; do
			[[ -f ${x} ]] && mv -f "${x}" ${D}${LIBPATH}/include/
		done
		for x in gcj gnu java javax org ; do
			if [[ -d ${D}${PREFIX}/include/${x} ]] ; then
				dodir /${LIBPATH}/include/${x}
				mv -f ${D}${PREFIX}/include/${x}/* ${D}${LIBPATH}/include/${x}/
				rm -rf ${D}${PREFIX}/include/${x}
			fi
		done

		if [[ -d ${D}${PREFIX}/lib/security ]] ; then
			dodir /${LIBPATH}/security
			mv -f ${D}${PREFIX}/lib/security/* ${D}${LIBPATH}/security
			rm -rf ${D}${PREFIX}/lib/security
		fi

		# Move libgcj.spec to compiler-specific directories
		[[ -f ${D}${PREFIX}/lib/libgcj.spec ]] && \
			mv -f ${D}${PREFIX}/lib/libgcj.spec ${D}${LIBPATH}/libgcj.spec

		# Rename jar because it could clash with Kaffe's jar if this gcc is
		# primary compiler (aka don't have the -<version> extension)
		cd ${D}${PREFIX}/${CTARGET}/gcc-bin/${GCC_CONFIG_VER}
		[[ -f jar ]] && mv -f jar gcj-jar

		# Move <cxxabi.h> to compiler-specific directories
		[[ -f ${D}${STDCXX_INCDIR}/cxxabi.h ]] && \
			mv -f ${D}${STDCXX_INCDIR}/cxxabi.h ${D}${LIBPATH}/include/

		# These should be symlinks
		dodir /usr/bin
		cd "${D}"${BINPATH}
		for x in gcc g++ c++ g77 gcj gcjh gfortran ; do
			# For some reason, g77 gets made instead of ${CTARGET}-g77...
			# this should take care of that
			[[ -f ${x} ]] && mv ${x} ${CTARGET}-${x}

			if [[ -f ${CTARGET}-${x} ]] && ! is_crosscompile; then
				ln -sf ${CTARGET}-${x} ${x}

				# Create version-ed symlinks
				dosym ${BINPATH}/${CTARGET}-${x} \
					/usr/bin/${CTARGET}-${x}-${GCC_CONFIG_VER}
				dosym ${BINPATH}/${CTARGET}-${x} \
					/usr/bin/${x}-${GCC_CONFIG_VER}
			fi

			if [[ -f ${CTARGET}-${x}-${GCC_CONFIG_VER} ]] ; then
				rm -f ${CTARGET}-${x}-${GCC_CONFIG_VER}
				ln -sf ${CTARGET}-${x} ${CTARGET}-${x}-${GCC_CONFIG_VER}
			fi
		done

		# I do not know if this will break gcj stuff, so I'll only do it for
		#   objc for now; basically "ffi.h" is the correct file to include,
		#   but it gets installed in .../GCCVER/include and yet it does
		#   "#include <ffitarget.h>" which (correctly, as it's an "extra" file)
		#   is installed in .../GCCVER/include/libffi; the following fixes
		#   ffi.'s include of ffitarget.h - Armando Di Cianno <fafhrd@gentoo.org>
		if is_objc && ! is_gcj ; then
			#dosed "s:<ffitarget.h>:<libffi/ffitarget.h>:g" /${LIBPATH}/include/ffi.h
			mv "${D}"${LIBPATH}/include/libffi/* "${D}"${LIBPATH}/include
			rm -Rf "${D}"${LIBPATH}/include/libffi
		fi
	fi

	cd "${S}"
	if use build || is_crosscompile; then
		rm -rf "${D}"/usr/share/{man,info}
		rm -rf "${D}"${DATAPATH}/{man,info}
	else
		local cxx_mandir=${WORKDIR}/build/${CTARGET}/libstdc++-v3/docs/doxygen/man
		if [[ -d ${cxx_mandir} ]] ; then
			# clean bogus manpages #113902
			find "${cxx_mandir}" -name '*_build_*' -exec rm {} \;
			cp -r "${cxx_mandir}"/man? "${D}/${DATAPATH}"/man/
		fi
		has noinfo ${FEATURES} \
			&& rm -r "${D}/${DATAPATH}"/info \
			|| prepinfo "${DATAPATH}"
		has noman ${FEATURES} \
			&& rm -f "${D}/${DATAPATH}"/man \
			|| prepman "${DATAPATH}"
	fi

	# Rather install the script, else portage with changing $FILESDIR
	# between binary and source package borks things ....
	if ! is_crosscompile; then
		insinto /lib/rcscripts/awk
		doins "${GCC_FILESDIR}"/awk/fixlafiles.awk
		exeinto /sbin
		doexe "${GCC_FILESDIR}"/fix_libtool_files.sh
	fi

	# use gid of 0 because some stupid ports don't have
	# the group 'root' set to gid 0
	chown -R root:0 "${D}"${LIBPATH}

	# Create config files for eselect-compiler
	create_eselect_conf
}

# Move around the libs to the right location.  For some reason,
# when installing gcc, it dumps internal libraries into /usr/lib
# instead of the private gcc lib path
gcc_movelibs() {
	# XXX: This breaks when cross-compiling a native compiler (CBUILD != CHOST)

	local multiarg
	for multiarg in $(${XGCC} -print-multi-lib) ; do
		multiarg=${multiarg#*;}
		multiarg=${multiarg//@/ -}

		local OS_MULTIDIR=$(${XGCC} -B./ ${multiarg} --print-multi-os-directory)
		local MULTIDIR=$(${XGCC} -B./ ${multiarg} --print-multi-directory)
		local TODIR=${D}${LIBPATH}/${MULTIDIR}
		local FROMDIR=

		[[ -d ${TODIR} ]] || mkdir -p ${TODIR}

		for FROMDIR in \
			${LIBPATH}/${OS_MULTIDIR} \
			${LIBPATH}/../${MULTIDIR} \
			${PREFIX}/lib/${OS_MULTIDIR} \
			${PREFIX}/${CTARGET}/lib/${OS_MULTIDIR} \
			${PREFIX}/lib/${MULTIDIR}
		do
			FROMDIR=${D}${FROMDIR}
			if [[ ${FROMDIR} != "${TODIR}" && -d ${FROMDIR} ]] ; then
				local files=$(find "${FROMDIR}" -maxdepth 1 ! -type d 2>/dev/null)
				if [[ -n ${files} ]] ; then
					mv ${files} "${TODIR}"
					rmdir "${FROMDIR}" 2>/dev/null
				fi
			fi
		done
	done

	# make sure the libtool archives have libdir set to where they actually
	# -are-, and not where they -used- to be.
	fix_libtool_libdir_paths "$(find ${D}${LIBPATH} -name *.la)"
}

#----<< src_* >>----

#---->> unorganized crap in need of refactoring follows

# gcc_quick_unpack will unpack the gcc tarball and patches in a way that is
# consistant with the behavior of get_gcc_src_uri. The only patch it applies
# itself is the branch update if present.
#
# Travis Tilley <lv@gentoo.org> (03 Sep 2004)
#
gcc_quick_unpack() {
	pushd ${WORKDIR} > /dev/null
	export PATCH_GCC_VER=${PATCH_GCC_VER:-${GCC_RELEASE_VER}}
	export UCLIBC_GCC_VER=${UCLIBC_GCC_VER:-${PATCH_GCC_VER}}
	export PIE_GCC_VER=${PIE_GCC_VER:-${GCC_RELEASE_VER}}
	export PP_GCC_VER=${PP_GCC_VER:-${GCC_RELEASE_VER}}
	export HTB_GCC_VER=${HTB_GCC_VER:-${GCC_RELEASE_VER}}

	if [[ -n ${GCC_A_FAKEIT} ]] ; then
		unpack ${GCC_A_FAKEIT}.tar.bz2
		mv ${GCC_A_FAKEIT} "${S}"
	elif [[ -n ${PRERELEASE} ]] ; then
		unpack gcc-${PRERELEASE}.tar.bz2
	elif [[ -n ${SNAPSHOT} ]] ; then
		unpack gcc-${SNAPSHOT}.tar.bz2
	else
		unpack gcc-${GCC_RELEASE_VER}.tar.bz2
		# We want branch updates to be against a release tarball
		if [[ -n ${BRANCH_UPDATE} ]] ; then
			pushd ${S:-"$(gcc_get_s_dir)"} > /dev/null
			epatch ${DISTDIR}/gcc-${GCC_RELEASE_VER}-branch-update-${BRANCH_UPDATE}.patch.bz2
			popd > /dev/null
		fi
	fi

	[[ -n ${PATCH_VER} ]] && \
		unpack gcc-${PATCH_GCC_VER}-patches-${PATCH_VER}.tar.bz2

	[[ -n ${UCLIBC_VER} ]] && \
		unpack gcc-${UCLIBC_GCC_VER}-uclibc-patches-${UCLIBC_VER}.tar.bz2

	if want_ssp ; then
		if [[ -n ${PP_FVER} ]] ; then
			# The gcc 3.4 propolice versions are meant to be unpacked to ${S}
			pushd ${S:-$(gcc_get_s_dir)} > /dev/null
			unpack protector-${PP_FVER}.tar.gz
			popd > /dev/null
		else
			unpack gcc-${PP_GCC_VER}-ssp-${PP_VER}.tar.bz2
		fi
	fi

	if want_pie ; then
		if [[ -n ${PIE_CORE} ]] ; then
			unpack ${PIE_CORE}
		else
			unpack gcc-${PIE_GCC_VER}-piepatches-v${PIE_VER}.tar.bz2
		fi
	fi

	# pappy@gentoo.org - Fri Oct  1 23:24:39 CEST 2004
	want_boundschecking && \
		unpack "bounds-checking-gcc-${HTB_GCC_VER}-${HTB_VER}.patch.bz2"

	popd > /dev/null
}

# Exclude any unwanted patches, as specified by the following variables:
#
#	GENTOO_PATCH_EXCLUDE
#			List of filenames, relative to ${WORKDIR}/patch/
#
#	PIEPATCH_EXCLUDE
#			List of filenames, relative to ${WORKDIR}/piepatch/
#
# Travis Tilley <lv@gentoo.org> (03 Sep 2004)
#
exclude_gcc_patches() {
	local i
	for i in ${GENTOO_PATCH_EXCLUDE} ; do
		if [[ -f ${WORKDIR}/patch/${i} ]] ; then
			einfo "Excluding patch ${i}"
			rm -f ${WORKDIR}/patch/${i} || die "failed to delete ${i}"
		fi
	done
	for i in ${PIEPATCH_EXCLUDE} ; do
		if [[ -f ${WORKDIR}/piepatch/${i} ]] ; then
			einfo "Excluding piepatch ${i}"
			rm -f ${WORKDIR}/piepatch/${i} || die "failed to delete ${i}"
		fi
	done
}

# Try to apply some stub patches so that gcc won't error out when
# passed parameters like -fstack-protector but no ssp is found
do_gcc_stub() {
	local v stub_patch=""
	for v in ${GCC_RELEASE_VER} ${GCC_BRANCH_VER} ; do
		stub_patch=${GCC_FILESDIR}/stubs/gcc-${v}-$1-stub.patch
		if [[ -e ${stub_patch} ]] ; then
			EPATCH_SINGLE_MSG="Applying stub patch for $1 ..." \
			epatch "${stub_patch}"
			return 0
		fi
	done
}

do_gcc_HTB_patches() {
	if ! want_boundschecking || \
	   (want_ssp && [[ ${HTB_EXCLUSIVE} == "true" ]])
	then
		do_gcc_stub htb
		return 0
	fi

	# modify the bounds checking patch with a regression patch
	epatch "${WORKDIR}/bounds-checking-gcc-${HTB_GCC_VER}-${HTB_VER}.patch"
	release_version="${release_version}, HTB-${HTB_GCC_VER}-${HTB_VER}"
}

# patch in ProPolice Stack Smashing protection
do_gcc_SSP_patches() {
	# PARISC has no love ... it's our stack :(
	if [[ $(tc-arch) == "hppa" ]] || \
	   ! want_ssp || \
	   (want_boundschecking && [[ ${HTB_EXCLUSIVE} == "true" ]])
	then
		do_gcc_stub ssp
		return 0
	fi

	local ssppatch
	local sspdocs

	if [[ -n ${PP_FVER} ]] ; then
		# Etoh keeps changing where files are and what the patch is named
		if version_is_at_least 3.4.1 ; then
			# >3.4.1 uses version in patch name, and also includes docs
			ssppatch="${S}/gcc_${PP_VER}.dif"
			sspdocs="yes"
		elif version_is_at_least 3.4.0 ; then
			# >3.4 put files where they belong and 3_4 uses old patch name
			ssppatch="${S}/protector.dif"
			sspdocs="no"
		elif version_is_at_least 3.2.3 ; then
			# earlier versions have no directory structure or docs
			mv ${S}/protector.{c,h} ${S}/gcc
			ssppatch="${S}/protector.dif"
			sspdocs="no"
		fi
	else
		# Just start packaging the damn thing ourselves
		mv "${WORKDIR}"/ssp/protector.{c,h} "${S}"/gcc/
		ssppatch=${WORKDIR}/ssp/gcc-${PP_GCC_VER}-ssp.patch
		# allow boundschecking and ssp to get along
		(want_boundschecking && [[ -e ${WORKDIR}/ssp/htb-ssp.patch ]]) \
			&& patch -s "${ssppatch}" "${WORKDIR}"/ssp/htb-ssp.patch
	fi

	[[ -z ${ssppatch} ]] && die "Sorry, SSP is not supported in this version"
	epatch ${ssppatch}

	if [[ ${PN} == "gcc" && ${sspdocs} == "no" ]] ; then
		epatch "${GCC_FILESDIR}"/pro-police-docs.patch
	fi

	# Don't build crtbegin/end with ssp
	sed -e 's|^CRTSTUFF_CFLAGS = |CRTSTUFF_CFLAGS = -fno-stack-protector |'\
		-i gcc/Makefile.in || die "Failed to update crtstuff!"

	# if gcc in a stage3 defaults to ssp, is version 3.4.0 and a stage1 is built
	# the build fails building timevar.o w/:
	# cc1: stack smashing attack in function ix86_split_to_parts()
	if use build && version_is_at_least 3.4.0 ; then
		if gcc -dumpspecs | grep -q "fno-stack-protector:" ; then
			epatch "${GCC_FILESDIR}"/3.4.0/gcc-3.4.0-cc1-no-stack-protector.patch
		fi
	fi

	release_version="${release_version}, ssp-${PP_FVER:-${PP_GCC_VER}-${PP_VER}}"
	if want_libssp ; then
		update_gcc_for_libssp
	else
		update_gcc_for_libc_ssp
	fi

	# Don't build libgcc with ssp
	sed -e 's|^\(LIBGCC2_CFLAGS.*\)$|\1 -fno-stack-protector|' \
		-i gcc/Makefile.in || die "Failed to update gcc!"
}

# If glibc or uclibc has been patched to provide the necessary symbols itself,
# then lets use those for SSP instead of libgcc.
update_gcc_for_libc_ssp() {
	if libc_has_ssp ; then
		einfo "Updating gcc to use SSP from libc ..."
		sed -e 's|^\(LIBGCC2_CFLAGS.*\)$|\1 -D_LIBC_PROVIDES_SSP_|' \
			-i ${S}/gcc/Makefile.in || die "Failed to update gcc!"
	fi
}

# a split out non-libc non-libgcc ssp requires additional spec logic changes
update_gcc_for_libssp() {
	einfo "Updating gcc to use SSP from libssp..."
	sed -e 's|^\(INTERNAL_CFLAGS.*\)$|\1 -D_LIBSSP_PROVIDES_SSP_|' \
		-i ${S}/gcc/Makefile.in || die "Failed to update gcc!"
}

# do various updates to PIE logic
do_gcc_PIE_patches() {
	if ! want_pie || \
	   (want_boundschecking && [[ ${HTB_EXCLUSIVE} == "true" ]])
	then
		return 0
	fi

	want_boundschecking \
		&& rm -f "${WORKDIR}"/piepatch/*/*-boundschecking-no.patch* \
		|| rm -f "${WORKDIR}"/piepatch/*/*-boundschecking-yes.patch*

	guess_patch_type_in_dir "${WORKDIR}"/piepatch/upstream

	# corrects startfile/endfile selection and shared/static/pie flag usage
	EPATCH_MULTI_MSG="Applying upstream pie patches ..." \
	epatch "${WORKDIR}"/piepatch/upstream
	# adds non-default pie support (rs6000)
	EPATCH_MULTI_MSG="Applying non-default pie patches ..." \
	epatch "${WORKDIR}"/piepatch/nondef
	# adds default pie support (rs6000 too) if DEFAULT_PIE[_SSP] is defined
	EPATCH_MULTI_MSG="Applying default pie patches ..." \
	epatch "${WORKDIR}"/piepatch/def

	# we want to be able to control the pie patch logic via something other
	# than ALL_CFLAGS...
	sed -e '/^ALL_CFLAGS/iHARD_CFLAGS = ' \
		-e 's|^ALL_CFLAGS = |ALL_CFLAGS = $(HARD_CFLAGS) |' \
		-i ${S}/gcc/Makefile.in

	release_version="${release_version}, pie-${PIE_VER}"
}

should_we_gcc_config() {
	# we only want to switch compilers if installing to / or /tmp/stage1root
	[[ ${ROOT} == "/" || ${ROOT} == "/tmp/stage1root" ]] || return 1

	# we always want to run gcc-config if we're bootstrapping, otherwise
	# we might get stuck with the c-only stage1 compiler
	use bootstrap && return 0
	use build && return 0

	# if the current config is invalid, we definitely want a new one
	local curr_config
	if has_version 'app-admin/eselect-compiler' ; then
		curr_config=$(env -i eselect compiler show ${CTARGET} 2>&1) || return 0
	else
		curr_config=$(env -i gcc-config -c ${CTARGET} 2>&1) || return 0
	fi

	# if the previously selected config has the same major.minor (branch) as
	# the version we are installing, then it will probably be uninstalled
	# for being in the same SLOT, make sure we run gcc-config.
	local curr_config_ver
	if has_version 'app-admin/eselect-compiler' ; then
		curr_config_ver=$(env -i eselect compiler show ${CTARGET} | cut -f1 -d/ | awk -F - '{ print $5 }')
	else
		curr_config_ver=$(env -i gcc-config -S ${curr_config} | awk '{print $2}')
	fi

	local curr_branch_ver=$(get_version_component_range 1-2 ${curr_config_ver})

	# If we're using multislot, just run gcc-config if we're installing
	# to the same profile as the current one.
	use multislot && return $([[ ${curr_config_ver} == ${GCC_CONFIG_VER} ]])

	if [[ ${curr_branch_ver} == ${GCC_BRANCH_VER} ]] ; then
		return 0
	else
		# if we're installing a genuinely different compiler version,
		# we should probably tell the user -how- to switch to the new
		# gcc version, since we're not going to do it for him/her.
		# We don't want to switch from say gcc-3.3 to gcc-3.4 right in
		# the middle of an emerge operation (like an 'emerge -e world'
		# which could install multiple gcc versions).
		einfo "The current gcc config appears valid, so it will not be"
		einfo "automatically switched for you.  If you would like to"
		einfo "switch to the newly installed gcc version, do the"
		einfo "following:"
		echo
		if has_version 'app-admin/eselect-compiler' ; then
			einfo "eselect compiler set <profile>"
		else
			einfo "gcc-config ${CTARGET}-${GCC_CONFIG_VER}"
		fi
		einfo "source /etc/profile"
		echo
		ebeep
		return 1
	fi
}

do_gcc_config() {
	if ! should_we_gcc_config ; then
		# Just make sure all our LDPATH's are updated
		if has_version 'app-admin/eselect-compiler' ; then
			eselect compiler update
		else
			env -i gcc-config --use-old --force
		fi
		return 0
	fi

	if has_version 'app-admin/eselect-compiler' ; then
		local current_gcc_config=$(env -i eselect compiler show ${CTARGET})
		local current_specs=$(echo ${current_gcc_config} | cut -f2 -d/)
		if eselect compiler set ${CTARGET}-${GCC_CONFIG_VER}/${current_specs} &> /dev/null; then
			einfo "The following compiler profile has been activated based on your previous profile:"
			einfo "${CTARGET}-${GCC_CONFIG_VER}/${current_specs}"
		else
			local prefix=${current_specs%-*}
			[[ -n ${prefix} ]] && prefix="${prefix}-"

			local spec
			if use hardened ; then
				spec="hardened"
			else
				spec="vanilla"
			fi

			if eselect compiler set ${CTARGET}-${GCC_CONFIG_VER}/${prefix}${spec} &> /dev/null ; then
				ewarn "We were not able to select the currently in use profile with"
				ewarn "your newly emerged gcc.  Instead, we have enabled the following:"
				ewarn "${CTARGET}-${GCC_CONFIG_VER}/${prefix}${spec}"
				ewarn "If this is incorrect, please use 'eselect compiler set' to"
				ewarn "select another profile."
			else
				if [[ -n ${DEFAULT_ABI} ]] ; then
					prefix="${DEFAULT_ABI}-"
				fi

				if eselect compiler set ${CTARGET}-${GCC_CONFIG_VER}/${prefix}${spec} &> /dev/null ; then
					ewarn "We were not able to select the currently in use profile with"
					ewarn "your newly emerged gcc.  Instead, we have enabled the following:"
					ewarn "${CTARGET}-${GCC_CONFIG_VER}/${prefix}${spec}"
					ewarn "If this is incorrect, please use 'eselect compiler set' to"
					ewarn "select another profile."
				else
					eerror "We were not able to automatically set the current compiler"
					eerror "to your newly emerged gcc.  Please use 'eselect compiler set'"
					eerror "to select your compiler."
				fi
			fi
		fi
	else
		local current_gcc_config="" current_specs="" use_specs=""

		# We grep out any possible errors
		current_gcc_config=$(env -i gcc-config -c ${CTARGET} | grep -v '^ ')
		if [[ -n ${current_gcc_config} ]] ; then
			# figure out which specs-specific config is active
			current_specs=$(gcc-config -S ${current_gcc_config} | awk '{print $3}')
			[[ -n ${current_specs} ]] && use_specs=-${current_specs}
		fi

		if [[ -n ${use_specs} ]] && \
		   [[ ! -e ${ROOT}/etc/env.d/gcc/${CTARGET}-${GCC_CONFIG_VER}${use_specs} ]]
		then
			ewarn "The currently selected specs-specific gcc config,"
			ewarn "${current_specs}, doesn't exist anymore. This is usually"
			ewarn "due to enabling/disabling hardened or switching to a version"
			ewarn "of gcc that doesnt create multiple specs files. The default"
			ewarn "config will be used, and the previous preference forgotten."
			ebeep
			epause
			use_specs=""
		fi

		gcc-config ${CTARGET}-${GCC_CONFIG_VER}${use_specs}
	fi
}

# This function allows us to gentoo-ize gcc's version number and bugzilla
# URL without needing to use patches.
#
# Travis Tilley <lv@gentoo.org> (02 Sep 2004)
#
gcc_version_patch() {
	[[ -z $1 ]] && die "no arguments to gcc_version_patch"

	sed -i -e "s~\(const char version_string\[\] = \"\).*\(\".*\)~\1$1\2~" \
	       -e 's~http:\/\/gcc\.gnu\.org\/bugs\.html~http:\/\/bugs\.gentoo\.org\/~' ${S}/gcc/version.c || die "failed to update version.c with Gentoo branding."
}

# The purpose of this DISGUSTING gcc multilib hack is to allow 64bit libs
# to live in lib instead of lib64 where they belong, with 32bit libraries
# in lib32. This hack has been around since the beginning of the amd64 port,
# and we're only now starting to fix everything that's broken. Eventually
# this should go away.
#
# Travis Tilley <lv@gentoo.org> (03 Sep 2004)
#
disgusting_gcc_multilib_HACK() {
	local config
	local libdirs
	if has_multilib_profile ; then
		case $(tc-arch) in
			amd64)
				config="i386/t-linux64"
				libdirs="../$(get_abi_LIBDIR amd64) ../$(get_abi_LIBDIR x86)" \
			;;
			ppc64)
				config="rs6000/t-linux64"
				libdirs="../$(get_abi_LIBDIR ppc64) ../$(get_abi_LIBDIR ppc)" \
			;;
		esac
	else
		# Remove this hunk when amd64's 2004.3 is purged from portage.
		use amd64 || die "Your profile is no longer supported by portage."
		config="i386/t-linux64"
		libdirs="../$(get_libdir) ../$(get_multilibdir)"
	fi

	einfo "updating multilib directories to be: ${libdirs}"
	sed -i -e "s:^MULTILIB_OSDIRNAMES.*:MULTILIB_OSDIRNAMES = ${libdirs}:" ${S}/gcc/config/${config}
}

disable_multilib_libjava() {
	if is_gcj ; then
		# We dont want a multilib libjava, so lets use this hack taken from fedora
		pushd ${S} > /dev/null
		sed -i -e 's/^all: all-redirect/ifeq (\$(MULTISUBDIR),)\nall: all-redirect\nelse\nall:\n\techo Multilib libjava build disabled\nendif/' libjava/Makefile.in
		sed -i -e 's/^install: install-redirect/ifeq (\$(MULTISUBDIR),)\ninstall: install-redirect\nelse\ninstall:\n\techo Multilib libjava install disabled\nendif/' libjava/Makefile.in
		sed -i -e 's/^check: check-redirect/ifeq (\$(MULTISUBDIR),)\ncheck: check-redirect\nelse\ncheck:\n\techo Multilib libjava check disabled\nendif/' libjava/Makefile.in
		sed -i -e 's/^all: all-recursive/ifeq (\$(MULTISUBDIR),)\nall: all-recursive\nelse\nall:\n\techo Multilib libjava build disabled\nendif/' libjava/Makefile.in
		sed -i -e 's/^install: install-recursive/ifeq (\$(MULTISUBDIR),)\ninstall: install-recursive\nelse\ninstall:\n\techo Multilib libjava install disabled\nendif/' libjava/Makefile.in
		sed -i -e 's/^check: check-recursive/ifeq (\$(MULTISUBDIR),)\ncheck: check-recursive\nelse\ncheck:\n\techo Multilib libjava check disabled\nendif/' libjava/Makefile.in
		popd > /dev/null
	fi
}

fix_libtool_libdir_paths() {
	local dirpath
	for archive in $* ; do
		dirpath=$(dirname ${archive} | sed -e "s:^${D}::")
		sed -i ${archive} -e "s:^libdir.*:libdir=\'${dirpath}\':"
	done
}

is_multilib() {
	[[ ${GCCMAJOR} < 3 ]] && return 1
	case ${CTARGET} in
		mips64*|powerpc64*|s390x*|sparc64*|x86_64*)
			has_multilib_profile || use multilib ;;
		*)	false ;;
	esac
}

is_uclibc() {
	[[ ${GCCMAJOR} -lt 3 ]] && return 1
	[[ ${CTARGET} == *-uclibc ]]
}

is_cxx() {
	gcc-lang-supported 'c++' || return 1
	use build && return 1
	! use nocxx
}

is_f77() {
	gcc-lang-supported f77 || return 1
	use build && return 1
	use fortran
}

is_f95() {
	gcc-lang-supported f95 || return 1
	use build && return 1
	use fortran
}

is_fortran() {
	gcc-lang-supported fortran || return 1
	use build && return 1
	use fortran
}

is_gcj() {
	gcc-lang-supported java || return 1
	use build && return 1
	use gcj
}

is_objc() {
	gcc-lang-supported objc || return 1
	use build && return 1
	use objc
}

is_ada() {
	gcc-lang-supported ada || return 1
	use build && return 1
	use ada
}