summaryrefslogtreecommitdiff
blob: b5baf2af2a8535a7e356b89a534a6e4a9047c1c6 (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
# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-devel/gcc/gcc-3.4.0-r6.ebuild,v 1.13 2004/06/28 22:04:04 solar Exp $

IUSE="static nls bootstrap java build X multilib gcj f77 objc hardened uclibc n32 n64"

inherit eutils flag-o-matic libtool gnuconfig

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

# Recently there has been a lot of stability problem in Gentoo-land.  Many
# things can be the cause to this, but I believe that it is due to gcc3
# still having issues with optimizations, or with it not filtering bad
# combinations (protecting the user maybe from himeself) yet.
#
# This can clearly be seen in large builds like glibc, where too aggressive
# CFLAGS cause the tests to fail miserbly.
#
# Quote from Nick Jones <carpaski@gentoo.org>, who in my opinion
# knows what he is talking about:
#
#   People really shouldn't force code-specific options on... It's a
#   bad idea. The -march options aren't just to look pretty. They enable
#   options that are sensible (and include sse,mmx,3dnow when apropriate).
#
# The next command strips CFLAGS and CXXFLAGS from nearly all flags.  If
# you do not like it, comment it, but do not bugreport if you run into
# problems.
#
# <azarah@gentoo.org> (13 Oct 2002)
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

	# -mcpu is deprecated, and will actually break the gcc build on
	# a few archs... so we change it to mtune, and then strip unsupported
	# flags so we dont break versions of gcc that dont understand mtune.
	setting="`get-flag mcpu`"
	[ ! -z "${setting}" ] && \
		replace-flags -mcpu="${setting}" -mtune="${setting}" && \
		ewarn "-mcpu is deprecated" && \
		sleep 5
	strip-unsupported-flags

	# If we use multilib on mips, we shouldn't pass -mabi flag - it breaks
	# build of non-default-abi libraries.
	use mips && use multilib && filter-flags "-mabi*"

	export GCJFLAGS="${CFLAGS}"
}

# Theoretical cross compiler support
[ ! -n "${CCHOST}" ] && export CCHOST="${CHOST}"

LOC="/usr"
MY_PV="`echo ${PV} | awk -F. '{ gsub(/_pre.*|_alpha.*/, ""); print $1 "." $2 }'`"
MY_PV_FULL="`echo ${PV} | awk '{ gsub(/_pre.*|_alpha.*/, ""); print $0 }'`"

# GCC 3.4 no longer uses gcc-lib. we'll rename this later for compatibility
# reasons, as a few things would break without gcc-lib.
LIBPATH="${LOC}/lib/gcc/${CCHOST}/${MY_PV_FULL}"
BINPATH="${LOC}/${CCHOST}/gcc-bin/${MY_PV}"
DATAPATH="${LOC}/share/gcc-data/${CCHOST}/${MY_PV}"
# Dont install in /usr/include/g++-v3/, but in gcc internal directory.
# We will handle /usr/include/g++-v3/ with gcc-config ...
STDCXX_INCDIR="${LIBPATH}/include/g++-v${MY_PV/\.*/}"

# PIE support
PIE_VER="8.7.6.3"

# ProPolice version
PP_VER="3_4"
PP_FVER="${PP_VER//_/.}-2"

# Patch tarball support ...
PATCH_VER="1.1"

# Snapshot support ...
#SNAPSHOT="2002-08-12"
SNAPSHOT=

# Branch update support ...
MAIN_BRANCH="${PV}"  # Tarball, etc used ...
BRANCH_UPDATE=20040601

if [ -z "${SNAPSHOT}" ]
then
	S="${WORKDIR}/${PN}-${MAIN_BRANCH}"
	SRC_URI="ftp://gcc.gnu.org/pub/gcc/releases/${P}/${PN}-${MAIN_BRANCH}.tar.bz2"

	if [ -n "${PATCH_VER}" ]
	then
		SRC_URI="${SRC_URI}
		         http://dev.gentoo.org/~lv/${P}-patches-${PATCH_VER}.tar.bz2"
	fi

	if [ -n "${BRANCH_UPDATE}" ]
	then
		SRC_URI="${SRC_URI}
		         http://dev.gentoo.org/~lv/${PN}-${MAIN_BRANCH}-branch-update-${BRANCH_UPDATE}.patch.bz2"
	fi
else
	S="${WORKDIR}/gcc-${SNAPSHOT//-}"
	SRC_URI="ftp://sources.redhat.com/pub/gcc/snapshots/${SNAPSHOT}/gcc-${SNAPSHOT//-}.tar.bz2"
fi
if [ -n "${PP_VER}" ]
then
	SRC_URI="${SRC_URI}
		http://www.research.ibm.com/trl/projects/security/ssp/gcc${PP_VER}/protector-${PP_FVER}.tar.gz"
fi

# PERL cannot be present at bootstrap, and is used to build the man pages. So..
# lets include some pre-generated ones, shall we?
SRC_URI="${SRC_URI}
	mirror://gentoo/${P}-manpages.tar.bz2"

# bug #6148 - the bounds checking patch interferes with gcc.c

# just till the mirrors update...
#PIE_BASE_URI="mirror://gentoo/"
PIE_BASE_URI="http://dev.gentoo.org/~lv/"
PIE_CORE="gcc-3.4.0-piepatches-v${PIE_VER}.tar.bz2"
SRC_URI="${SRC_URI} ${PIE_BASE_URI}${PIE_CORE}"

DESCRIPTION="The GNU Compiler Collection.  Includes C/C++, java compilers, pie and ssp extentions"
HOMEPAGE="http://www.gnu.org/software/gcc/gcc.html"

LICENSE="GPL-2 LGPL-2.1"

KEYWORDS="-* amd64 ~mips ppc64"
#KEYWORDS="amd64 ~x86 ~ppc ~sparc ~mips ~ia64 ~ppc64 ~hppa ~alpha ~s390"

# Ok, this is a hairy one again, but lets assume that we
# are not cross compiling, than we want SLOT to only contain
# $PV, as people upgrading to new gcc layout will not have
# their old gcc unmerged ...
# GCC 3.4 introduces a new version of libstdc++
if [ "${CHOST}" == "${CCHOST}" ]
then
	SLOT="${MY_PV}"
else
	SLOT="${CCHOST}-${MY_PV}"
fi

# We need the later binutils for support of the new cleanup attribute.
# 'make check' fails for about 10 tests (if I remember correctly) less
# if we use later bison.
# This one depends on glibc-2.3.2-r3 containing the __guard in glibc
# we scan for Guard@@libgcc and then apply the function moving patch.
# If using NPTL, we currently cannot however depend on glibc-2.3.2-r3,
# else bootstap will break.

# we need a proper glibc version for the Scrt1.o provided to the pie-ssp specs

# we need at least glibc 2.3.3 20040420-r1 in order for gcc 3.4 not to nuke
# SSP in glibc.
DEPEND="virtual/glibc
	!uclibc? ( >=sys-libs/glibc-2.3.3_pre20040420-r1 )
	!uclibc? ( hardened? ( >=sys-libs/glibc-2.3.3_pre20040529 ) )
	( !sys-devel/hardened-gcc )
	>=sys-devel/binutils-2.14.90.0.8-r1
	>=sys-devel/bison-1.875
	>=sys-devel/gcc-config-1.3.1
	amd64? ( multilib? ( >=app-emulation/emul-linux-x86-baselibs-1.0 ) )
	!build? ( >=sys-libs/ncurses-5.2-r2
	          nls? ( sys-devel/gettext ) )"

RDEPEND="virtual/glibc
	!uclibc? ( >=sys-libs/glibc-2.3.3_pre20040420-r1 )
	!uclibc? ( hardened? ( >=sys-libs/glibc-2.3.3_pre20040529 ) )
	>=sys-devel/gcc-config-1.3.1
	>=sys-libs/zlib-1.1.4
	>=sys-apps/texinfo-4.2-r4
	!build? ( >=sys-libs/ncurses-5.2-r2 )"

PDEPEND="sys-devel/gcc-config"

has_lib64() {
	use amd64 && return 0
	use ppc64 && return 0
	return 1
}

chk_gcc_version() {
	# This next bit is for updating libtool linker scripts ...
	local OLD_GCC_VERSION="`gcc -dumpversion`"
	local OLD_GCC_CHOST="$(gcc -v 2>&1 | egrep '^Reading specs' |\
	                       sed -e 's:^.*/gcc-lib/\([^/]*\)/[0-9]\+.*$:\1:')"

	if [ "${OLD_GCC_VERSION}" != "${MY_PV_FULL}" ]
	then
		echo "${OLD_GCC_VERSION}" > "${WORKDIR}/.oldgccversion"
	fi

	if [ -n "${OLD_GCC_CHOST}" ]
	then
		if [ "${CHOST}" = "${CCHOST}" -a "${OLD_GCC_CHOST}" != "${CHOST}" ]
		then
			echo "${OLD_GCC_CHOST}" > "${WORKDIR}/.oldgccchost"
		fi
	fi

	# Did we check the version ?
	touch "${WORKDIR}/.chkgccversion"
}

version_patch() {
	[ ! -f "$1" ] && return 1
	[ -z "$2" ] && return 1

	sed -e "s:@GENTOO@:$2:g" ${1} > ${T}/${1##*/}
	epatch ${T}/${1##*/}
}

check_option_validity() {
	# Must compile for mips64-linux target if we want n32/n64 support
	case "${CCHOST}" in
		mips64-*)
		;;
		*)
		    if use n32 || use n64; then
		     eerror "n32/n64 can only be used when target host is mips64-*-linux-*";
		     die "Invalid USE flags for CCHOST ($CCHOST)";
		    fi
		;;
	esac

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

glibc_have_ssp() {
	use uclibc \
		&& local my_libc="${ROOT}/lib/libc.so.0" \
		|| local my_libc="${ROOT}/lib/libc.so.6"

# Not necessary. lib64 is a symlink to /lib. -- avenj@gentoo.org  3 Apr 04
#	case "${ARCH}" in
#		"amd64")
#			my_libc="${ROOT}/lib64/libc.so.?"
#			;;
#	esac

	# Check for the glibc to have the __guard symbols
	if  [ "$(readelf -s "${my_libc}" 2>/dev/null | \
	         grep GLOBAL | grep OBJECT | grep '__guard')" ] && \
	    [ "$(readelf -s "${my_libc}" 2>/dev/null | \
	         grep GLOBAL | grep FUNC | grep '__stack_smash_handler')" ]
	then
		return 0
	else
		return 1
	fi
}

glibc_have_pie() {
	if [ ! -f ${ROOT}/usr/lib/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
}

check_glibc_ssp() {
	if glibc_have_ssp
	then
		if [ -n "${GLIBC_SSP_CHECKED}" ] && \
		   [ -z "$(readelf -s  "${ROOT}/$(gcc-config -L)/libgcc_s.so" 2>/dev/null | \
		           grep 'GLOBAL' | grep 'OBJECT' | grep '__guard')" ]
		then
			# No need to check again ...
			return 0
		fi

		echo
		ewarn "This sys-libs/glibc has __guard object and __stack_smash_handler functions"
		ewarn "scanning the system for binaries with __guard - this may take 5-10 minutes"
		ewarn "Please do not press ctrl-C or ctrl-Z during this period - it will continue"
		echo
		if ! bash ${FILESDIR}/scan_libgcc_linked_ssp.sh
		then
			echo
			eerror "Found binaries that are dynamically linked to the libgcc with __guard@@GCC"
			eerror "You need to compile these binaries without CFLAGS -fstack-protector/hcc -r"
			echo
			eerror "Also, you have to make sure that using ccache needs the cache to be flushed"
			eerror "wipe out /var/tmp/ccache or /root/.ccache.  This will remove possible saved"
			eerror "-fstack-protector arguments that still may reside in such a compiler cache"
			echo
			eerror "When such binaries are found, gcc cannot remove libgcc propolice functions"
			eerror "leading to gcc -static -fstack-protector breaking, see gentoo bug #25299"
			echo
			einfo  "To do a full scan on your system, enter this following command in a shell"
			einfo  "(Please keep running and remerging broken packages until it do not report"
			einfo  " any breakage anymore!):"
			echo
			einfo  " # ${FILESDIR}/scan_libgcc_linked_ssp.sh"
			echo
			die "Binaries with libgcc __guard@GCC dependencies detected!"
		else
			echo
			einfo "No binaries with suspicious libgcc __guard@GCC dependencies detected"
			echo
		fi
	fi

	return 0
}

update_gcc_for_libc_ssp() {
	if glibc_have_ssp
	then
		einfo "Updating gcc to use SSP from glibc..."
		sed -e 's|^\(LIBGCC2_CFLAGS.*\)$|\1 -D_LIBC_PROVIDES_SSP_|' \
			-i ${S}/gcc/Makefile.in || die "Failed to update gcc!"
	fi
}

src_unpack() {
	local release_version="Gentoo Linux ${PVR}"

	if [ -n "${PP_VER}" ] && [ "${ARCH}" != "hppa" ]
	then
		# the guard check should be very early in the unpack process
		#check_glibc_ssp
		:
	fi

	[ -n "${PIE_VER}" ] && use hardened && glibc_have_pie

	if [ -z "${SNAPSHOT}" ]
	then
		unpack ${PN}-${MAIN_BRANCH}.tar.bz2

		if [ -n "${PATCH_VER}" ]
		then
			unpack ${P}-patches-${PATCH_VER}.tar.bz2
		fi
	else
		unpack gcc-${SNAPSHOT//-}.tar.bz2
	fi

	if [ -n "${PP_VER}" ]
	then
		unpack protector-${PP_FVER}.tar.gz
	fi

	if [ -n "${PIE_VER}" ]
	then
		unpack ${PIE_CORE}
	fi

	cd ${S}
	# Fixup libtool to correctly generate .la files with portage
	elibtoolize --portage --shallow

	# Branch update ...
	if [ -n "${BRANCH_UPDATE}" ]
	then
		epatch ${DISTDIR}/${PN}-${MAIN_BRANCH}-branch-update-${BRANCH_UPDATE}.patch.bz2
	fi

	# Do bulk patches included in ${P}-patches-${PATCH_VER}.tar.bz2
	if [ -n "${PATCH_VER}" ]
	then
		mkdir -p ${WORKDIR}/patch/exclude
		#mv -f ${WORKDIR}/patch/84* ${WORKDIR}/patch/exclude/
		bzip2 -c ${FILESDIR}/3.4.0/gcc34-ice-hack.patch > \
			${WORKDIR}/patch/02_all_gcc34-ice-hack.patch.bz2

		# for uclibc we rather copy the needed files and patch them
		mkdir ${S}/libstdc++-v3/config/{locale/uclibc,os/uclibc} || \
			die "can't create uclibc directories"
		cp ${S}/libstdc++-v3/config/locale/gnu/* \
			${S}/libstdc++-v3/config/locale/uclibc/ || die "can't copy uclibc locale"
		cp ${S}/libstdc++-v3/config/locale/ieee_1003.1-2001/codecvt_specializations.h \
			${S}/libstdc++-v3/config/locale/uclibc/ || die "can't copy uclibc codecvt"
		cp ${S}/libstdc++-v3/config/os/gnu-linux/* \
			${S}/libstdc++-v3/config/os/uclibc/ || die "can't copy uclibc os"
		cp ${S}/gcc/config/t-linux ${S}/gcc/config/t-linux-uclibc || \
			die "can't copy t-linux"
		cp ${S}/gcc/config/cris/t-linux ${S}/gcc/config/cris/t-linux-uclibc || \
			die "can't copy cris/t-linux"
		cp ${S}/gcc/config/sh/t-linux ${S}/gcc/config/sh/t-linux-uclibc || \
			die "can't copy sh/t-linux"
		cp ${S}/gcc/config/sh/t-sh64 ${S}/gcc/config/sh/t-sh64-uclibc || \
			die "can't copy sh/t-sh64"

		if use multilib && [ "${ARCH}" = "amd64" ]
		then
			mv -f ${WORKDIR}/patch/06* ${WORKDIR}/patch/exclude/
			bzip2 -c ${FILESDIR}/gcc331_use_multilib.amd64.patch > \
				${WORKDIR}/patch/06_amd64_gcc331-use-multilib.patch.bz2
		fi

		epatch ${WORKDIR}/patch

		# the uclibc patches need autoconf to be run
		# for build stage we need the updated files though
		use build || ( cd ${S}/libstdc++-v3; autoconf; cd ${S} )
		#use build && use uclibc && ewarn "uclibc in build stage is not supported yet" && exit 1

		use uclibc && epatch ${FILESDIR}/3.3.3/gcc-uclibc-3.3-loop.patch
	elif use multilib && [ "${ARCH}" = "amd64" ]
	then
		# We need this even if there isnt a patchset
		epatch ${FILESDIR}/gcc331_use_multilib.amd64.patch
	fi

	if [ -n "${PIE_VER}" ]
	then
		[ -z "${PATCH_VER}" ] && mv piepatch/upstream/04_* piepatch/

		# corrects startfile/endfile selection and shared/static/pie flag usage
		epatch ${WORKDIR}/piepatch/upstream
		# adds non-default pie support (rs6000)
		epatch ${WORKDIR}/piepatch/nondef
		# adds default pie support (rs6000 too) if DEFAULT_PIE[_SSP] is defined
		epatch ${WORKDIR}/piepatch/def
		# disable relro/now
		use uclibc && epatch ${FILESDIR}/gcc-3.3.3-norelro.patch
	fi

	# non-default SSP support.
	if [ "${ARCH}" != "hppa" -a "${ARCH}" != "hppa64" -a -n "${PP_VER}" ]
	then
		# ProPolice Stack Smashing protection
		epatch ${WORKDIR}/protector.dif

		cp ${WORKDIR}/gcc/protector.c ${WORKDIR}/${P}/gcc/ || die "protector.c not found"
		cp ${WORKDIR}/gcc/protector.h ${WORKDIR}/${P}/gcc/ || die "protector.h not found"
		cp -R ${WORKDIR}/gcc/testsuite/* ${WORKDIR}/${P}/gcc/testsuite/ || die "testsuite not found"

		[ -n "${PATCH_VER}" ] && epatch ${FILESDIR}/3.3.3/gcc-3.3.3-uclibc-add-ssp.patch

		# we apply only the needed parts of protectonly.dif
		sed -e 's|^CRTSTUFF_CFLAGS = |CRTSTUFF_CFLAGS = -fno-stack-protector-all |' \
			-i gcc/Makefile.in || die "Failed to update crtstuff!"
		#sed -e 's|^\(LIBGCC2_CFLAGS.*\)$|\1 -fno-stack-protector-all|' \
		#	-i ${S}/gcc/Makefile.in || die "Failed to update libgcc!"

		# 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 gcc -dumpspecs | grep -q "fno-stack-protector:"
		then
			use build && epatch ${FILESDIR}/3.4.0/gcc-3.4.0-cc1-no-stack-protector.patch
		fi

		release_version="${release_version}, ssp-${PP_FVER}"

		update_gcc_for_libc_ssp
	fi

	release_version="${release_version}, pie-${PIE_VER}"
	if use hardened && ( use x86 || use sparc || use amd64 )
	then
		einfo "Updating gcc to use automatic PIE + SSP building ..."
		sed -e 's|^ALL_CFLAGS = |ALL_CFLAGS = -DEFAULT_PIE_SSP |' \
			-i ${S}/gcc/Makefile.in || die "Failed to update gcc!"

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

	version_patch ${FILESDIR}/3.4.0/gcc-${PV}-r6-gentoo-branding.patch \
		"${BRANCH_UPDATE} (${release_version})" || die "Failed Branding"

	# TODO: on arches where we lack a Scrt1.o (like parisc) we still need unpack, compile and install logic
	# TODO: for the crt1Snocsu.o provided by a custom gcc-pie-ssp.tgz which can also be included in SRC_URI

	epatch ${FILESDIR}/3.4.0/gcc34-ppc64-m32-m64-multilib-only.patch
	epatch ${FILESDIR}/3.4.0/gcc34-ia64-lib64.patch
	epatch ${FILESDIR}/3.4.0/gcc34-multi32-hack.patch
	epatch ${FILESDIR}/3.4.0/reiser4-why-do-you-hate-me.patch

	# Misdesign in libstdc++ (Redhat)
	cp -a ${S}/libstdc++-v3/config/cpu/i{4,3}86/atomicity.h

	# disable --as-needed from being compiled into gcc specs
	# natively when using >=sys-devel/binutils-2.15.90.0.1 this is
	# done to keep our gcc backwards compatible with binutils. 
	# gcc 3.4.1 cvs has patches that need back porting.. 
	# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14992 (May 3 2004)
	sed -i -e s/HAVE_LD_AS_NEEDED/USE_LD_AS_NEEDED/g ${S}/gcc/config.in

	use uclibc && gnuconfig_update

	cd ${S}; ./contrib/gcc_update --touch &> /dev/null
}

src_compile() {

	local myconf=
	local gcc_lang=

	check_option_validity

	if ! use build
	then
		myconf="${myconf} --enable-shared"
		gcc_lang="c,c++"
		use f77 && gcc_lang="${gcc_lang},f77"
		use objc && gcc_lang="${gcc_lang},objc"
		use java && use gcj && gcc_lang="${gcc_lang},java"
		# We do NOT want 'ADA support' in here!
		# use ada  && gcc_lang="${gcc_lang},ada"
	else
		gcc_lang="c"
	fi
	if ! use nls || use build
	then
		myconf="${myconf} --disable-nls"
	else
		myconf="${myconf} --enable-nls --without-included-gettext"
	fi

	# Enable building of the gcj Java AWT & Swing X11 backend
	# if we have X as a use flag and are not in a build stage.
	# X11 support is still very experimental but enabling it is
	# quite innocuous...  [No, gcc is *not* linked to X11...]
	# <dragon@gentoo.org> (15 May 2003)
	if ! use build && use java && use gcj && use X && [ -f /usr/X11R6/include/X11/Xlib.h ]
	then
		myconf="${myconf} --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib"
		myconf="${myconf} --enable-interpreter --enable-java-awt=xlib --with-x"
	fi

	# Multilib not yet supported
	if use multilib
	then
		einfo "WARNING: Multilib support enabled. This is still experimental."
		myconf="${myconf} --enable-multilib"
	else
		if [ "${ARCH}" = "amd64" ]
		then
			einfo "WARNING: Multilib not enabled. You will not be able to build 32bit binaries."
		fi
		myconf="${myconf} --disable-multilib"
	fi

	# Fix linking problem with c++ apps which where linked
	# against a 3.2.2 libgcc
	[ "${ARCH}" = "hppa" ] && myconf="${myconf} --enable-sjlj-exceptions"

	# --with-gnu-ld needed for cross-compiling
	# --enable-sjlj-exceptions : currently the unwind stuff seems to work 
	# for statically linked apps but not dynamic
	# so use setjmp/longjmp exceptions by default
	# uclibc uses --enable-clocale=uclibc (autodetected)
	# --disable-libunwind-exceptions needed till unwind sections get fixed. see ps.m for details

	if ! use uclibc
	then
		# it's getting close to a time where we are going to need USE=glibc, uclibc, bsdlibc -solar
		myconf="${myconf} --enable-__cxa_atexit --enable-clocale=gnu"
	else
		myconf="${myconf} --disable-__cxa_atexit --enable-target-optspace --with-gnu-ld --enable-sjlj-exceptions"
	fi

	# Default arch support disabled for now...
	#use amd64 && myconf="${myconf} --with-arch=k8"
	#use s390 && myconf="${myconf} --with-arch=nofreakingclue"
	#use x86 && myconf="${myconf} --with-arch=i586"
	#use mips && myconf="${myconf} --with-arch=mips3"

	# Add --with-abi flags to enable respective MIPS ABIs
	case "${CCHOST}" in
	    mips*)
		use multilib && myconf="${myconf} --with-abi=32"
		use n32 && myconf="${myconf} --with-abi=n32"
		use n64 && myconf="${myconf} --with-abi=n64"
	    ;;
	esac

	do_filter_flags
	einfo "CFLAGS=\"${CFLAGS}\""
	einfo "CXXFLAGS=\"${CXXFLAGS}\""
	einfo "GCJFLAGS=\"${GCJFLAGS}\""

	# Build in a separate build tree
	mkdir -p ${WORKDIR}/build
	cd ${WORKDIR}/build

	# Install our pre generated manpages if we do not have perl ...
	if [ ! -x /usr/bin/perl ]
	then
		unpack ${P}-manpages.tar.bz2
	fi

	einfo "Configuring GCC..."
	addwrite "/dev/zero"
	${S}/configure --prefix=${LOC} \
		--bindir=${BINPATH} \
		--includedir=${LIBPATH}/include \
		--datadir=${DATAPATH} \
		--mandir=${DATAPATH}/man \
		--infodir=${DATAPATH}/info \
		--enable-shared \
		--host=${CHOST} \
		--target=${CCHOST} \
		--with-system-zlib \
		--enable-languages=${gcc_lang} \
		--enable-threads=posix \
		--enable-long-long \
		--disable-checking \
		--disable-libunwind-exceptions \
		--enable-cstdio=stdio \
		--enable-version-specific-runtime-libs \
		--with-gxx-include-dir=${STDCXX_INCDIR} \
		--with-local-prefix=${LOC}/local \
		--disable-werror \
		${myconf} || die

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

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

	# Setup -j in MAKEOPTS
	get_number_of_jobs

	einfo "Building GCC..."
	# Only build it static if we are just building the C frontend, else
	# a lot of things break because there are not libstdc++.so ....
	if use static && [ "${gcc_lang}" = "c" ]
	then
		# Fix for our libtool-portage.patch
		S="${WORKDIR}/build" \
		emake LDFLAGS="-static" bootstrap \
			LIBPATH="${LIBPATH}" \
			BOOT_CFLAGS="${CFLAGS}" STAGE1_CFLAGS="-O" || die
		# Above FLAGS optimize and speedup build, thanks
		# to Jeff Garzik <jgarzik@mandrakesoft.com>
	else
		# Fix for our libtool-portage.patch
		S="${WORKDIR}/build" \
		emake profiledbootstrap \
			LIBPATH="${LIBPATH}" \
			BOOT_CFLAGS="${CFLAGS}" STAGE1_CFLAGS="-O" || die

	fi
}

src_install() {
	local x=

	# Do allow symlinks in ${LOC}/lib/gcc-lib/${CHOST}/${PV}/include as
	# this can break the build.
	for x in ${WORKDIR}/build/gcc/include/*
	do
		if [ -L ${x} ]
		then
			rm -f ${x}
			continue
		fi
	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
		if grep -q 'It has been auto-edited by fixincludes from' ${x}
		then
			rm -f ${x}
		fi
	done

	einfo "Installing GCC..."
	# Do the 'make install' from the build directory
	cd ${WORKDIR}/build
	S="${WORKDIR}/build" \
	make prefix=${LOC} \
		bindir=${BINPATH} \
		includedir=${LIBPATH}/include \
		datadir=${DATAPATH} \
		mandir=${DATAPATH}/man \
		infodir=${DATAPATH}/info \
		DESTDIR="${D}" \
		LIBPATH="${LIBPATH}" \
		install || die

	[ -r ${D}${BINPATH}/gcc ] || die "gcc not found in ${D}"

	# Because GCC 3.4 installs into the gcc directory and not the gcc-lib
	# directory, we will have to rename it in order to keep compatibility
	# with our current libtool check and gcc-config (which would be a pain
	# to fix compared to this simple mv and symlink).
	mv ${D}/${LOC}/lib/gcc ${D}/${LOC}/lib/gcc-lib
	ln -s gcc-lib ${D}/${LOC}/lib/gcc
	LIBPATH=${LIBPATH/lib\/gcc/lib\/gcc-lib}

	dodir /lib /usr/bin
	dodir /etc/env.d/gcc
	echo "PATH=\"${BINPATH}\"" > ${D}/etc/env.d/gcc/${CCHOST}-${MY_PV_FULL}
	echo "ROOTPATH=\"${BINPATH}\"" >> ${D}/etc/env.d/gcc/${CCHOST}-${MY_PV_FULL}

	# The LDPATH stuff is kinda iffy now that we need to provide compatibility
	# with older versions of GCC for binary apps.
	if use multilib && [ "${ARCH}" = "amd64" ]
	then
		# amd64 is a bit unique because of multilib.  Add some other paths
		LDPATH="${LIBPATH}:${LIBPATH}/32:${LIBPATH}/../lib64:${LIBPATH}/../lib32"
	else
		LDPATH="${LIBPATH}"
	fi
	if [ "${BULIB}" != "" ]
	then
		LDPATH="${LDPATH}:${LOC}/lib/gcc-lib/${CCHOST}/${BULIB}"
	fi
	echo "LDPATH=\"${LDPATH}\"" >> ${D}/etc/env.d/gcc/${CCHOST}-${MY_PV_FULL}

	echo "MANPATH=\"${DATAPATH}/man\"" >> ${D}/etc/env.d/gcc/${CCHOST}-${MY_PV_FULL}
	echo "INFOPATH=\"${DATAPATH}/info\"" >> ${D}/etc/env.d/gcc/${CCHOST}-${MY_PV_FULL}
	echo "STDCXX_INCDIR=\"${STDCXX_INCDIR##*/}\"" >> ${D}/etc/env.d/gcc/${CCHOST}-${MY_PV_FULL}
	# Also set CC and CXX
	echo "CC=\"gcc\"" >> ${D}/etc/env.d/gcc/${CCHOST}-${MY_PV_FULL}
	echo "CXX=\"g++\"" >> ${D}/etc/env.d/gcc/${CCHOST}-${MY_PV_FULL}

	# Make sure we do not check glibc for SSP again, as we did already
	if glibc_have_ssp || \
	   [ -f "${ROOT}/etc/env.d/99glibc_ssp" ]
	then
		echo "GLIBC_SSP_CHECKED=1" > ${D}/etc/env.d/99glibc_ssp
	fi

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

		# Tell libtool files where real libraries are
		for x in ${D}${LOC}/lib/*.la ${D}${LIBPATH}/../*.la
		do
			if [ -f "${x}" ]
			then
				sed -i -e "s:/usr/lib:${LIBPATH}:" ${x}
				mv ${x} ${D}${LIBPATH}
			fi
		done

		# Move all the libraries to version specific libdir.
		for x in ${D}${LOC}/lib/*.{so,a}* ${D}${LIBPATH}/../*.{so,a}*
		do
			[ -f "${x}" -o -L "${x}" ] && mv -f ${x} ${D}${LIBPATH}
		done

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

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

		# Move libgcj.spec to compiler-specific directories
		[ -f "${D}${LOC}/lib/libgcj.spec" ] && \
			mv -f ${D}${LOC}/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 ${D}${LOC}/${CCHOST}/gcc-bin/${MY_PV}
		[ -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
		cd ${D}${BINPATH}
		for x in gcc g++ c++ g77 gcj
		do
			rm -f ${CCHOST}-${x}
			[ -f "${x}" ] && ln -sf ${x} ${CCHOST}-${x}

			if [ -f "${CCHOST}-${x}-${PV}" ]
			then
				rm -f ${CCHOST}-${x}-${PV}
				ln -sf ${x} ${CCHOST}-${x}-${PV}
			fi
		done
	fi

	# This one comes with binutils
	if [ -f "${D}${LOC}/lib/libiberty.a" ]
	then
		rm -f ${D}${LOC}/lib/libiberty.a
	fi
	if [ -f "${D}${LIBPATH}/libiberty.a" ]
	then
		rm -f ${D}${LIBPATH}/libiberty.a
	fi

	cd ${S}
	if ! use build
	then
		cd ${S}
		docinto /${CCHOST}
		dodoc COPYING COPYING.LIB ChangeLog* FAQ MAINTAINERS README
		docinto ${CCHOST}/html
		dohtml *.html
		cd ${S}/boehm-gc
		docinto ${CCHOST}/boehm-gc
		dodoc ChangeLog doc/{README*,barrett_diagram}
		docinto ${CCHOST}/boehm-gc/html
		dohtml doc/*.html
		cd ${S}/gcc
		docinto ${CCHOST}/gcc
		dodoc ChangeLog* FSFChangeLog* LANGUAGES NEWS ONEWS README* SERVICE
		if use f77
		then
			cd ${S}/libf2c
			docinto ${CCHOST}/libf2c
			dodoc ChangeLog* README TODO *.netlib
		fi
		cd ${S}/libffi
		docinto ${CCHOST}/libffi
		dodoc ChangeLog* LICENSE README
		cd ${S}/libiberty
		docinto ${CCHOST}/libiberty
		dodoc ChangeLog* COPYING.LIB README
		if use objc
		then
			cd ${S}/libobjc
			docinto ${CCHOST}/libobjc
			dodoc ChangeLog* README* THREADS*
		fi
		cd ${S}/libstdc++-v3
		docinto ${CCHOST}/libstdc++-v3
		dodoc ChangeLog* README
		docinto ${CCHOST}/libstdc++-v3/html
		dohtml -r -a css,diff,html,txt,xml docs/html/*
		cp -f docs/html/17_intro/[A-Z]* \
			${D}/usr/share/doc/${PF}/${DOCDESTTREE}/17_intro/

		if use java && use gcj
		then
			cd ${S}/fastjar
			docinto ${CCHOST}/fastjar
			dodoc AUTHORS CHANGES COPYING ChangeLog* NEWS README
			cd ${S}/libjava
			docinto ${CCHOST}/libjava
			dodoc ChangeLog* COPYING HACKING LIBGCJ_LICENSE NEWS README THANKS
		fi

		prepman ${DATAPATH}
		prepinfo ${DATAPATH}
	else
		rm -rf ${D}/usr/share/{man,info}
		rm -rf ${D}${DATAPATH}/{man,info}
	fi

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

	if has_lib64
	then
		# GCC 3.4 tries to place libgcc_s in lib64, where it will never be
		# found. When multilib is enabled, it also places the 32bit version in
		# lib32. This problem could be handled by a symlink if you only plan on
		# having one compiler installed at a time, but since these directories
		# exist outside the versioned directories, versions from gcc 3.3 and
		# 3.4 will overwrite each other. not good.
		use multilib && \
		cp -pfd ${D}/${LIBPATH}/../lib32/libgcc_s* ${D}/${LIBPATH}
		cp -pfd ${D}/${LIBPATH}/../lib64/libgcc_s* ${D}/${LIBPATH}
	fi
}

pkg_preinst() {

	if [ ! -f "${WORKDIR}/.chkgccversion" ]
	then
		chk_gcc_version
	fi

	# Make again sure that the linker "should" be able to locate
	# libstdc++.so ...
	if use multilib && [ "${ARCH}" = "amd64" ]
	then
		# Can't always find libgcc_s.so.1, make it find it
		export LD_LIBRARY_PATH="${LIBPATH}:${LIBPATH}/../lib64:${LIBPATH}/../lib32:${LD_LIBRARY_PATH}"
	else
		export LD_LIBRARY_PATH="${LIBPATH}:${LD_LIBRARY_PATH}"
	fi
	${ROOT}/sbin/ldconfig
}

pkg_postinst() {

	if use multilib && [ "${ARCH}" = "amd64" ]
	then
		# Can't always find libgcc_s.so.1, make it find it
		export LD_LIBRARY_PATH="${LIBPATH}:${LIBPATH}/../lib64:${LIBPATH}/../lib32:${LD_LIBRARY_PATH}"
	else
		export LD_LIBRARY_PATH="${LIBPATH}:${LD_LIBRARY_PATH}"
	fi
	if [ "${ROOT}" = "/" -a "${COMPILER}" = "gcc3" -a "${CHOST}" = "${CCHOST}" ]
	then
		gcc-config --use-portage-chost ${CCHOST}-${MY_PV_FULL}
	fi

	# Update libtool linker scripts to reference new gcc version ...
	if [ "${ROOT}" = "/" ] && \
	   [ -f "${WORKDIR}/.oldgccversion" -o -f "${WORKDIR}/.oldgccchost" ]
	then
		local OLD_GCC_VERSION=
		local OLD_GCC_CHOST=

		if [ -f "${WORKDIR}/.oldgccversion" ] && \
		   [ -n "$(cat "${WORKDIR}/.oldgccversion")" ]
		then
			OLD_GCC_VERSION="$(cat "${WORKDIR}/.oldgccversion")"
		else
			OLD_GCC_VERSION="${MY_PV_FULL}"
		fi

		if [ -f "${WORKDIR}/.oldgccchost" ] && \
		   [ -n "$(cat "${WORKDIR}/.oldgccchost")" ]
		then
			OLD_GCC_CHOST="--oldarch $(cat "${WORKDIR}/.oldgccchost")"
		fi

		/sbin/fix_libtool_files.sh ${OLD_GCC_VERSION} ${OLD_GCC_CHOST}
	fi

	ewarn "If you are migrating to gcc 3.4 from a previous compiler, it is"
	ewarn "HIGHLY suggested you install libstdc++-v3 before uninstalling"
	ewarn "your old compiler, even if you dont plan on using any binary only"
	ewarn "applications that would otherwise need it. If you dont, then all"
	ewarn "c++ applications will break."
}