summaryrefslogtreecommitdiff
blob: 78e3f5538fe060d9ce65e01ab20240dd2d430b74 (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
# Copyright 1999-2004 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-libs/glibc/glibc-2.3.3_pre20040529.ebuild,v 1.11 2004/06/04 18:20:59 lv Exp $

IUSE="nls pic build nptl erandom hardened multilib"

inherit eutils flag-o-matic gcc

filter-flags "-fomit-frame-pointer -malign-double"
filter-ldflags "-pie"

# 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)
strip-flags

# Lock glibc at -O2 -- linuxthreads needs it and we want to be conservative here
export CFLAGS="${CFLAGS//-O?} -O2"
# Clear -f-unit-at-a-time, which kills gcc-3.4.0
export CFLAGS="${CFLAGS//-funit-at-a-time} -fno-unit-at-a-time"

export CXXFLAGS="${CFLAGS}"
export LDFLAGS="${LDFLAGS//-Wl,--relax}"

BRANCH_UPDATE="20040529"

# Minimum kernel version for --enable-kernel
export MIN_KV="2.4.1"
# Minimum kernel version for enabling TLS and NPTL ...
# NOTE: do not change this if you do not know what
#       you are doing !
export MIN_NPTL_KV="2.6.0"

#MY_PV="${PV/_}"
MY_PV="2.3.2"
#S="${WORKDIR}/${P%_*}"
S="${WORKDIR}/${PN}-${MY_PV}"
DESCRIPTION="GNU libc6 (also called glibc2) C library"
SRC_URI="http://ftp.gnu.org/gnu/glibc/glibc-${MY_PV}.tar.bz2
	ftp://sources.redhat.com/pub/glibc/snapshots/glibc-${MY_PV}.tar.bz2
	http://ftp.gnu.org/gnu/glibc/glibc-linuxthreads-${MY_PV}.tar.bz2
	ftp://sources.redhat.com/pub/glibc/snapshots/glibc-linuxthreads-${MY_PV}.tar.bz2
	mirror://gentoo/${P/_*}-branch-update-${BRANCH_UPDATE}.patch.bz2
	hppa? ( mirror://gentoo/${PN}-${MY_PV}-hppa-patches-p1.tar.bz2 )"
HOMEPAGE="http://www.gnu.org/software/libc/libc.html"

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

SLOT="2.2"
LICENSE="LGPL-2"

# We need new cleanup attribute support from gcc for NPTL among things ...
DEPEND=">=sys-devel/gcc-3.2.3-r1
	nptl? ( >=sys-devel/gcc-3.3.1-r1 )
	amd64? ( !nptl? ( =sys-kernel/linux-headers-2.4* ) )
	>=sys-devel/binutils-2.14.90.0.6-r1
	virtual/os-headers
	nls? ( sys-devel/gettext )"
RDEPEND="virtual/os-headers
	sys-apps/baselayout
	nls? ( sys-devel/gettext )"

PROVIDE="virtual/glibc"


# Try to get a kernel source tree with version equal or greater
# than $1.  We basically just try a few default locations.  The
# version need to be that which KV_to_int() returns ...
get_KHV() {
	local headers=

	[ -z "$1" ] && return 1

	# - First check if linux-headers are installed (or symlink
	#   to current kernel ...)
	# - Ok, do we have access to the current kernel's headers ?
	# - Last option ... maybe its a weird bootstrap with /lib
	#   binded to the chroot ...

	# We do not really support more than 2 arguments ...
	if [ -n "$2" ]
	then
		headers="$2"
	else
		# Things should be pretty stable kernel side now, so try
		# /usr/include first, then the current kernel's headers.
		headers="${ROOT}/usr/include \
		         /lib/modules/`uname -r`/build/include \
		         ${ROOT}/lib/modules/`uname -r`/build/include \
				 /usr/src/linux/include \
				 ${ROOT}/usr/src/linux/include"
	fi

	for x in ${headers}
	do
		local header="${x}/linux/version.h"

		if [ -f ${header} ]
		then

			local version="`grep 'LINUX_VERSION_CODE' ${header} | \
				sed -e 's:^.*LINUX_VERSION_CODE[[:space:]]*::'`"

			if [ "${version}" -ge "$1" ]
			then
				echo "${x}"

				return 0
			fi
		fi
	done

	return 1
}

use_nptl() {
	# Enable NPTL support if:
	# - We have 'nptl' in USE
	# - We have linux-2.5 or later kernel (should prob check for 2.4.20 ...)
	if [ -n "`use nptl`" -a "`get_KV`" -ge "`KV_to_int ${MIN_NPTL_KV}`"  ]
	then
		# Enable NPTL support if:
		# - We have 'x86' in USE and:
		#   - a CHOST of "i486-pc-linux-gnu"
		#   - a CHOST of "i586-pc-linux-gnu"
		#   - a CHOST of "i686-pc-linux-gnu"
		# - Or we have 'alpha' in USE
		# - Or we have 'amd64' in USE
		# - Or we have 'mips' in USE
		# - Or we have 'ppc' in USE
		case ${ARCH} in
			"x86")
				if [ "${CHOST/-*}" = "i486" -o \
				     "${CHOST/-*}" = "i586" -o \
					 "${CHOST/-*}" = "i686" ]
				then
					return 0
				fi
				;;
			"alpha"|"amd64"|"ia64"|"mips"|"ppc"|"sparc")
				return 0
				;;
			*)
				return 1
				;;
		esac
	fi

	return 1
}

pkg_setup() {
	# We need gcc 3.2 or later ...
	if [ "`gcc-major-version`" -ne "3" -o "`gcc-minor-version`" -lt "2" ]
	then
		echo
		eerror "As of glibc-2.3, gcc-3.2 or later is needed"
		eerror "for the build to succeed."
		die "GCC too old"
	fi

	echo

	if use_nptl
	then
		# The use_nptl should have already taken care of kernel version,
		# arch and CHOST, so now just check if we can find suitable kernel
		# source tree or headers ....
		einfon "Checking for sufficient version kernel headers ... "
		if ! get_KHV "`KV_to_int ${MIN_NPTL_KV}`" &> /dev/null
		then
			echo "no"
			echo
			eerror "Could not find a kernel source tree or headers with"
			eerror "version ${MIN_NPTL_KV} or later!  Please correct this"
			eerror "and try again."
			die "Insufficient kernel headers present!"
		else
			echo "yes"
		fi
	fi

	if [ "$(KV_to_int $(uname -r))" -gt "`KV_to_int '2.5.68'`" ]
	then
		local KERNEL_HEADERS="$(get_KHV "`KV_to_int ${MIN_NPTL_KV}`")"

		einfon "Checking kernel headers for broken sysctl.h ... "
		if ! gcc -I"${KERNEL_HEADERS}" \
		         -c ${FILESDIR}/test-sysctl_h.c -o ${T}/test1.o &> /dev/null
		then
			echo "yes"
			echo
			eerror "Your version of:"
			echo
			eerror "  ${KERNEL_HEADERS}/linux/sysctl.h"
			echo
			eerror "is broken (from a user space perspective).  Please apply"
			eerror "the following patch:"
			echo
			eerror "*******************************************************"
			cat ${FILESDIR}/fix-sysctl_h.patch
			eerror "*******************************************************"
			die "Broken linux/sysctl.h header included in kernel sources!"
		else
			echo "no"
		fi
	fi

	if use_nptl
	then
		einfon "Checking gcc for __thread support ... "
		if ! gcc -c ${FILESDIR}/test-__thread.c -o ${T}/test2.o &> /dev/null
		then
			echo "no"
			echo
			eerror "Could not find a gcc that supports the __thread directive!"
			eerror "please update to gcc-3.2.2-r1 or later, and try again."
			die "No __thread support in gcc!"
		else
			echo "yes"
		fi

	elif use nptl &> /dev/null
	then
		echo
		# Just tell the user not to expect too much ...
		ewarn "You have \"nptl\" in your USE, but your kernel version or"
		ewarn "architecture does not support it!"
	fi

	echo
}

src_unpack() {

	local LOCAL_P="${PN}-${MY_PV}"

	unpack glibc-${MY_PV}.tar.bz2

	# Extract pre-made man pages.  Otherwise we need perl, which is a no-no.
	mkdir -p ${S}/man; cd ${S}/man
	use_nptl || tar xjf ${FILESDIR}/glibc-manpages-${MY_PV}.tar.bz2

	cd ${S}
	# Extract our threads package ...
	if (! use_nptl) && [ -z "${BRANCH_UPDATE}" ]
	then
		unpack glibc-linuxthreads-${MY_PV}.tar.bz2
	fi

	if [ -n "${BRANCH_UPDATE}" ]
	then
		epatch ${DISTDIR}/${PN}-${PV/_*}-branch-update-${BRANCH_UPDATE}.patch.bz2
	fi

	if use_nptl
	then
		epatch ${FILESDIR}/2.3.2/${LOCAL_P}-redhat-nptl-fixes.patch
	else
		epatch ${FILESDIR}/2.3.2/${LOCAL_P}-redhat-linuxthreads-fixes.patch
	fi

	# To circumvent problems with propolice __guard and
	# __guard_setup__stack_smash_handler
	#
	#  http://www.gentoo.org/proj/en/hardened/etdyn-ssp.xml
	if [ "${ARCH}" != "hppa" -a "${ARCH}" != "hppa64" ]
	then
		cd ${S}
		epatch ${FILESDIR}/2.3.3/${LOCAL_P}-propolice-guard-functions-v3.patch
		cp ${FILESDIR}/2.3.3/ssp.c ${S}/sysdeps/unix/sysv/linux || \
			die "failed to copy ssp.c to ${S}/sysdeps/unix/sysv/linux/"
	fi

	# patch this regardless of architecture, although it's ssp-related
	epatch ${FILESDIR}/2.3.3/${PN}-2.3.3-frandom-detect.patch

	#
	# *** PaX related patches starts here ***
	#

	# localedef contains nested function trampolines, which trigger
	# segfaults under PaX -solar
	# Debian Bug (#231438, #198099)
	epatch ${FILESDIR}/2.3.3/glibc-2.3.3-localedef-fix-trampoline.patch


	# With latest versions of glibc, a lot of apps failed on a PaX enabled
	# system with:
	#
	#  cannot enable executable stack as shared object requires: Permission denied
	#
	# This is due to PaX 'exec-protecting' the stack, and ld.so then trying
	# to make the stack executable due to some libraries not containing the
	# PT_GNU_STACK section.  Bug #32960.  <azarah@gentoo.org> (12 Nov 2003).
	cd ${S}; epatch ${FILESDIR}/2.3.3/${PN}-2.3.3-dl_execstack-PaX-support.patch

	# Program header support for PaX.
	cd ${S}; epatch ${FILESDIR}/2.3.3/${PN}-2.3.3_pre20040117-pt_pax.diff

	# Suppress unresolvable relocation against symbol `main' in Scrt1.o
	# can be reproduced with compiling net-dns/bind-9.2.2-r3 using -pie
	epatch ${FILESDIR}/2.3.3/${PN}-2.3.3_pre20040117-got-fix.diff

	#
	# *** PaX related patches ends here ***
	#

	# Sanity check the forward and backward chunk pointers in the
	# unlink() macro used by Doug Lea's implementation of malloc(3).
	cd ${S}; epatch ${FILESDIR}/2.3.3/glibc-2.3.3-owl-malloc-unlink-sanity-check.diff

	# Fix an assert when running libc.so from commandline, bug #34733.
#	cd ${S}; epatch ${FILESDIR}/2.3.2/${PN}-2.3.2-rtld-assert-fix.patch

	# This next patch fixes a test that will timeout due to ReiserFS' slow handling of sparse files
#	cd ${S}/io; epatch ${FILESDIR}/glibc-2.2.2-test-lfs-timeout.patch

	# This add back glibc 2.2 compadibility.  See bug #8766 and #9586 for more info,
	# and also:
	#
	#  http://lists.debian.org/debian-glibc/2002/debian-glibc-200210/msg00093.html
	#
	# We should think about remoing it in the future after things have settled.
	#
	# Thanks to Jan Gutter <jangutter@tuks.co.za> for reporting it.
	#
	# <azarah@gentoo.org> (26 Oct 2002).
	#cd ${S}; epatch ${FILESDIR}/2.3.1/${PN}-2.3.1-ctype-compat-v3.patch

	# One more compat issue which breaks sun-jdk-1.3.1.  See bug #8766 for more
	# info, and also:
	#
	#   http://sources.redhat.com/ml/libc-alpha/2002-04/msg00143.html
	#
	# Thanks to Jan Gutter <jangutter@tuks.co.za> for reporting it.
	#
	# <azarah@gentoo.org> (30 Oct 2002).
	#cd ${S}; epatch ${FILESDIR}/2.3.1/${PN}-2.3.1-libc_wait-compat.patch

	# One more compat issue ... libc_stack_end is missing from ld.so.
	# Got this one from diffing redhat glibc tarball .. would help if
	# they used patches and not modified tarball ...
	#
	# <azarah@gentoo.org> (7 Nov 2002).
#	cd ${S}; epatch ${FILESDIR}/2.3.1/${PN}-2.3.1-stack_end-compat.patch

	# The mathinline.h header omits the middle term of a ?: expression.  This
	# is a gcc extension, but since the ISO standard forbids it, it's a
	# GLIBC bug (bug #27142).  See also:
	#
	#   http://bugs.gentoo.org/show_bug.cgi?id=27142
	#
#	cd ${S}; epatch ${FILESDIR}/2.3.2/${LOCAL_P}-fix-omitted-operand-in-mathinline_h.patch

	# We do not want name_insert() in iconvconfig.c to be defined inside
	# write_output() as it causes issues with trampolines/PaX.
	cd ${S}; epatch ${FILESDIR}/2.3.2/${LOCAL_P}-iconvconfig-name_insert.patch

	# A few patches only for the MIPS platform.  Descriptions of what they
	# do can be found in the patch headers.
	# <tuxus@gentoo.org> thx <dragon@gentoo.org> (11 Jan 2003)
	# <kumba@gentoo.org> remove tst-rndseek-mips & ulps-mips patches
	# <iluxa@gentoo.org> add n32/n64 patches, remove pread patch
	if [ "${ARCH}" = "mips" ]
	then
		cd ${S}
		epatch ${FILESDIR}/2.3.1/${PN}-2.3.1-fpu-cw-mips.patch
		epatch ${FILESDIR}/2.3.1/${PN}-2.3.1-librt-mips.patch
		epatch ${FILESDIR}/2.3.2/${LOCAL_P}-mips-configure-for-n64-symver.patch
		epatch ${FILESDIR}/2.3.3/${PN}-2.3.3_pre20040420-mips-dl-machine-calls.diff
		epatch ${FILESDIR}/2.3.3/${PN}-2.3.3_pre20040420-mips-incl-sgidefs.diff
		epatch ${FILESDIR}/2.3.3/mips-addabi.diff
		epatch ${FILESDIR}/2.3.3/mips-syscall.h.diff
		epatch ${FILESDIR}/2.3.3/semtimedop.diff
		epatch ${FILESDIR}/2.3.3/mips-sysify.diff
		# Need to install into /lib for n32-only userland for now.
		# Propper solution is to make all userland /lib{32|64}-aware.
		use multilib || epatch ${FILESDIR}/2.3.3/mips-nolib3264.diff
	fi

	if [ "${ARCH}" = "alpha" ]
	then
		cd ${S}
		# Fix compatability with compaq compilers by ifdef'ing out some
		# 2.3.2 additions.
		# <taviso@gentoo.org> (14 Jun 2003).
		epatch ${FILESDIR}/2.3.2/${LOCAL_P}-decc-compaq.patch

		# Fix compilation with >=gcc-3.2.3 (01 Nov 2003 agriffis)
#		epatch ${FILESDIR}/2.3.2/${LOCAL_P}-alpha-pwrite.patch
	fi

	if [ "${ARCH}" = "amd64" ]
	then
		cd ${S}; epatch ${FILESDIR}/2.3.2/${LOCAL_P}-amd64-nomultilib.patch
	fi

	if [ "${ARCH}" = "ia64" ]
	then
		# The basically problem is glibc doesn't store information about
		# what the kernel interface is so that it can't efficiently set up
		# parameters for system calls.  This patch from H.J. Lu fixes it:
		#
		#   http://sources.redhat.com/ml/libc-alpha/2003-09/msg00165.html
		#
		#cd ${S}; epatch ${FILESDIR}/2.3.2/${LOCAL_P}-ia64-LOAD_ARGS-fixup.patch
		:
	fi

	if [ "${ARCH}" = "hppa" ]
	then
		local x=

		cd ${WORKDIR}
		unpack ${LOCAL_P}-hppa-patches-p1.tar.bz2
		cd ${S}
		EPATCH_EXCLUDE="0[123459]0* 055* 1[2379]0* 200* 230*"
		for x in ${EPATCH_EXCLUDE}
		do
			rm -f ${WORKDIR}/${LOCAL_P}-hppa-patches/${x}
		done
		for x in ${WORKDIR}/${LOCAL_P}-hppa-patches/*
		do
			epatch ${x}
		done
		epatch ${FILESDIR}/2.3.1/glibc23-07-hppa-atomicity.dpatch
	fi

	cd ${S}

	# Fix permissions on some of the scripts
	chmod u+x ${S}/scripts/*.sh

	# disable -z relro
	use hardened || sed -e 's/^have-z-relro.*/have-z-relro = no/' -i ${S}/config.make.in
	# disables building nscd as pie
	use hardened || sed -e 's/^have-fpie.*/have-fpie = no/' -i ${S}/config.make.in
	# disable binutils -as-needed, useful, if glibc should not depend on libgcc_s.so
	sed -e 's/^have-as-needed.*/have-as-needed = no/' -i ${S}/config.make.in
	# disable execstack (the patch is used by rh for gcc < 3.3.3)
	#use hardened || epatch ${FILESDIR}/2.3.3/glibc-execstack-disable.patch
	#use hardened || sed -e 's/^ASFLAGS-config.*/ASFLAGS-config =/' -i ${S}/config.make.in
	# mandatory, if binutils supports relro and the kernel is pax/grsecurity enabled
	# solves almost all segfaults building the locale files on grsecurity enabled kernels
	use build && sed -e 's/^LDFLAGS-rtld += $(relro.*/LDFLAGS-rtld += -Wl,-z,norelro/' -i ${S}/Makeconfig
	use build || (use hardened && sed -e 's/^LDFLAGS-rtld += $(relro.*/LDFLAGS-rtld += -Wl,-z,norelro/' -i ${S}/Makeconfig)
}

setup_flags() {
	# -freorder-blocks for all but ia64 s390 s390x
	use ppc || append-flags "-freorder-blocks"

	# Sparc/Sparc64 support
	if use sparc
	then

		# Both sparc and sparc64 can use -fcall-used-g6.  -g7 is bad, though.
		replace-flags "-fcall-used-g7" ""
		append-flags "-fcall-used-g6"

		# Sparc64 Only support...
		if [ "${PROFILE_ARCH}" = "sparc64" ]
		then

			# Get rid of -mcpu options, the CHOST will fix this up
			replace-flags "-mcpu=ultrasparc" ""
			replace-flags "-mcpu=v9" ""

			# Get rid of flags known to fail
			replace-flags "-mvis" ""

			# Setup the CHOST properly to insure "sparcv9"
			# This passes -mcpu=ultrasparc -Wa,-Av9a to the compiler
			[ "${CHOST}" == "sparc-unknown-linux-gnu" ] && \
				export CHOST="sparcv9-unknown-linux-gnu"
		fi
	fi

	# temporary fix for a few gcc 3.4 related problems
	if [ "`gcc-major-version`" -ge "3" -a "`gcc-minor-version`" -ge "4" ]
	then
		append-flags -fno-unit-at-a-time
	fi

}

src_compile() {
	local myconf=
	local myconf_nptl=

	setup_flags

	# These should not be set, else the
	# zoneinfo do not always get installed ...
	unset LANGUAGE LANG LC_ALL

	use nls || myconf="${myconf} --disable-nls"

	use erandom || myconf="${myconf} --disable-dev-erandom"

	use hardened && myconf="${myconf} --enable-bind-now"

	if use_nptl
	then
		local kernelheaders="$(get_KHV "`KV_to_int ${MIN_NPTL_KV}`")"

		# NTPL and Thread Local Storage support.
		myconf="${myconf} --with-tls --with-__thread \
		                       --enable-add-ons=nptl \
		                       --enable-kernel=${MIN_NPTL_KV} \
		                       --with-headers=${kernelheaders}"
	else
		myconf="${myconf} --without-__thread \
		                  --enable-add-ons=linuxthreads"

		# If we build for the build system we use the kernel headers from the target
		# We also now set it without "build" as well, else it might use the
		# current kernel's headers, which might just fail (the linux-headers
		# package is usually well tested...)
#		( use build || use sparc ) \
#			&& myconf="${myconf} --with-headers=${ROOT}usr/include"
		myconf="${myconf} --with-headers=${ROOT}usr/include"

		# If kernel version and headers in ${ROOT}/usr/include are ok,
		# then enable --enable-kernel=${MIN_KV} ...
		if [ "`get_KV`" -ge "`KV_to_int ${MIN_KV}`" -a \
		     -n "$(get_KHV "`KV_to_int ${MIN_KV}`" "${ROOT}/usr/include")" ]
		then
			myconf="${myconf} --enable-kernel=${MIN_KV}"
		else
			myconf="${myconf} --enable-kernel=2.2.5"
		fi
	fi

	einfo "Configuring GLIBC..."
	rm -rf ${S}/buildhere
	mkdir -p ${S}/buildhere
	cd ${S}/buildhere
	../configure --build=${CHOST} \
		--host=${CHOST} \
		--with-gd=no \
		--without-cvs \
		--disable-profile \
		--prefix=/usr \
		--mandir=/usr/share/man \
		--infodir=/usr/share/info \
		--libexecdir=/usr/lib/misc \
		${myconf} || die

	einfo "Building GLIBC..."
	cd ${S}/buildhere
	make PARALLELMFLAGS="${MAKEOPTS}" || die
#	einfo "Doing GLIBC checks..."
#	make check
}

src_install() {
	local buildtarget="buildhere"

	setup_flags

	# These should not be set, else the
	# zoneinfo do not always get installed ...
	unset LANGUAGE LANG LC_ALL

	einfo "Installing GLIBC..."
	make PARALLELMFLAGS="${MAKEOPTS}" \
		install_root=${D} \
		install -C ${buildtarget} || die

	# If librt.so is a symlink, change it into linker script (Redhat)
	if [ -L "${D}/usr/lib/librt.so" -a "${LIBRT_LINKERSCRIPT}" = "yes" ]
	then
		local LIBRTSO="`cd ${D}/lib; echo librt.so.*`"
		local LIBPTHREADSO="`cd ${D}/lib; echo libpthread.so.*`"

		rm -f ${D}/usr/lib/librt.so
		cat > ${D}/usr/lib/librt.so <<EOF
/* GNU ld script
	librt.so.1 needs libpthread.so.0 to come before libc.so.6*
	in search scope.  */
EOF
		grep "OUTPUT_FORMAT" ${D}/usr/lib/libc.so >> ${D}/usr/lib/librt.so
		echo "GROUP ( /lib/${LIBPTHREADSO} /lib/${LIBRTSO} )" \
			>> ${D}/usr/lib/librt.so

		for x in ${D}/usr/lib/librt.so.[1-9]
		do
			[ -L "${x}" ] && rm -f ${x}
		done
	fi

	if [ -z "`use build`" ]
	then
		einfo "Installing Info pages..."
		make PARALLELMFLAGS="${MAKEOPTS}" \
			install_root=${D} \
			info -C ${buildtarget} || die

		einfo "Installing Locale data..."
		make PARALLELMFLAGS="${MAKEOPTS}" \
			install_root=${D} \
			localedata/install-locales -C ${buildtarget} || die

		# Compatibility hack: this locale has vanished from glibc,
		# but some other programs are still using it.
		keepdir /usr/lib/locale/ru_RU/LC_MESSAGES

		einfo "Installing man pages and docs..."
		# Install linuxthreads man pages
		use_nptl || {
			dodir /usr/share/man/man3
			doman ${S}/man/*.3thr
		}

		# Install nscd config file
		insinto /etc
		doins ${FILESDIR}/nscd.conf

		dodoc BUGS ChangeLog* CONFORMANCE COPYING* FAQ INTERFACE \
			NEWS NOTES PROJECTS README*
	else
		rm -rf ${D}/usr/share ${D}/usr/lib/gconv

		einfo "Installing Timezone data..."
		make PARALLELMFLAGS="${MAKEOPTS}" \
			install_root=${D} \
			timezone/install-others -C ${buildtarget} || die
	fi

	if [ "`use pic`" ]
	then
		find ${S}/${buildtarget}/ -name "soinit.os" -exec cp {} ${D}/lib/soinit.o \;
		find ${S}/${buildtarget}/ -name "sofini.os" -exec cp {} ${D}/lib/sofini.o \;
		find ${S}/${buildtarget}/ -name "*_pic.a" -exec cp {} ${D}/lib \;
		find ${S}/${buildtarget}/ -name "*.map" -exec cp {} ${D}/lib \;
		for i in ${D}/lib/*.map
		do
			mv ${i} ${i%.map}_pic.map
		done
	fi

	# Is this next line actually needed or does the makefile get it right?
	# It previously has 0755 perms which was killing things.
	fperms 4711 /usr/lib/misc/pt_chown

	# Currently libraries in  /usr/lib/gconv do not get loaded if not
	# in search path ...
#	insinto /etc/env.d
#	doins ${FILESDIR}/03glibc

	rm -f ${D}/etc/ld.so.cache

	# Prevent overwriting of the /etc/localtime symlink.  We'll handle the
	# creation of the "factory" symlink in pkg_postinst().
	rm -f ${D}/etc/localtime

	# Some things want this, notably ash.
	dosym /usr/lib/libbsd-compat.a /usr/lib/libbsd.a
}

pkg_postinst() {
	# Correct me if I am wrong here, but my /etc/localtime is a file
	# created by zic ....
	# I am thinking that it should only be recreated if no /etc/localtime
	# exists, or if it is an invalid symlink.
	#
	# For invalid symlink:
	#   -f && -e  will fail
	#   -L will succeed
	#
	if [ ! -e ${ROOT}/etc/localtime ]
	then
		echo "Please remember to set your timezone using the zic command."
		rm -f ${ROOT}/etc/localtime
		ln -s ../usr/share/zoneinfo/Factory ${ROOT}/etc/localtime
	fi

	if [ -x ${ROOT}/usr/sbin/iconvconfig ]
	then
		# Generate fastloading iconv module configuration file.
		${ROOT}/usr/sbin/iconvconfig --prefix=${ROOT}
	fi

	# Reload init ...
	if [ "${ROOT}" = "/" ]
	then
		/sbin/init U &> /dev/null
	fi
}