summaryrefslogtreecommitdiff
blob: 54b6e0457bf6033b23b9f500b1f7f72816995030 (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
#!/bin/bash
# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-devel/crossdev/files/crossdev-stable,v 1.6 2008/11/28 09:19:41 vapier Exp $

cd /
umask 0022 #159111

if [[ ${ROOT:-/} != "/" ]] ; then
	echo "Sorry, but crossdev does not support ROOT."
	exit 2
fi

source /etc/init.d/functions.sh || exit 1
esyslog() { :; }
die() {
	echo
	eerror $*
	eerror If you file a bug, please attach the following logfiles:
	eerror ${PORT_LOGDIR}/cross-${CTARGET}-info.log
	eerror ${logfile}
	exit 1
}

usage() {
	local exit_status=${1:-0}
	shift
cat << EOF
Usage: ${HILITE}crossdev${NORMAL} ${GOOD}[options]${NORMAL} ${BRACKET}--target TARGET${NORMAL}

Options:
    ${GOOD}--b, --binutils${NORMAL} ver   Specify version of binutils to use
    ${GOOD}--g, --gcc${NORMAL} ver        Specify version of gcc to use
    ${GOOD}--k, --kernel${NORMAL} ver     Specify version of kernel headers to use
    ${GOOD}--l, --libc${NORMAL} ver       Specify version of libc to use
    ${GOOD}-S, --stable${NORMAL}          Use latest stable versions as default
    ${GOOD}-C, --clean${NORMAL} target    Uninstall specified target
    ${GOOD}-P, --portage${NORMAL} opts    Options to pass to emerge (see emerge(1))
    ${GOOD}--with[out]-headers${NORMAL}   Build C library headers before C compiler?
Stage Options:
    ${GOOD}-s0, --stage0${NORMAL}         Build just binutils
    ${GOOD}-s1, --stage1${NORMAL}         Also build a C compiler (no libc/C++)
    ${GOOD}-s2, --stage2${NORMAL}         Also build kernel headers
    ${GOOD}-s3, --stage3${NORMAL}         Also build the C library (no C++)
    ${GOOD}-s4, --stage4${NORMAL}         Also build a C++ compiler [default]
Extra Fun (must be run after above stages):
    ${GOOD}--ex-only${NORMAL}             Skip the stage steps above
    ${GOOD}--ex-gcc${NORMAL}              Build extra gcc targets (gcj/ada/etc...)
    ${GOOD}--ex-gdb${NORMAL}              Build a cross gdb
    ${GOOD}--ex-insight${NORMAL}          Build a cross insight
${BRACKET}Target (-t)${NORMAL} takes a tuple ${BRACKET}ARCH-VENDOR-OS-LIBC${NORMAL}; see 'crossdev -t help'
EOF
	[[ -n $* ]] && echo && eerror "Error: $*"
	exit ${exit_status}
}
STAGE_BINUTILS=0
STAGE_C_ONLY=1
STAGE_C_KERNEL=2
STAGE_LIBC=3
STAGE_C_CPP=4
STAGE_DEFAULT=${STAGE_C_CPP}
STAGE_DISP=( "binutils" "C compiler only" "kernel headers" "C compiler & libc" "C/C++ compiler" )

parse_target() {
	CTARGET=${1#cross-}

	[[ -z ${CTARGET} ]] && usage 1

	if [[ ${CTARGET} == "help" ]] ; then
		cat <<-EOF
		Supported Architectures:
		   - alpha                                     - arm / armeb
		   - hppa (parisc)                             - ia64
		   - i386 / i486 / i586 / i686 (x86)           - m68k
		   - mips / mipsel / mips64 / mips64el
		   - powerpc (ppc) / powerpc64 (ppc64)
		   - sparc / sparc64                           - s390 / s390x
		   - sh / sh[1-5] / sh64                       - x86_64 (amd64)
		Supported C Libraries:
		   - glibc (gnu)
		   - klibc       [prob wont work]
		   - newlib      [bare metal/no operating system]
		   - uclibc      [not all arches are ported]
		Special Targets:
		   - avr      http://www.nongnu.org/avr-libc/
		   - bfin     http://blackfin.uclinux.org/
		   - h8300    http://h8300-hms.sourceforge.net/
		   - mingw32  http://www.mingw.org/
		   - msp430   http://mspgcc.sourceforge.net/
		   - nios2    http://www.altera.com/products/ip/processors/nios2/ni2-index.html
		   - xc16x    http://www.infineon.com/
		   - ee / iop / dvp (ps2) [Playstation 2 targets]
		   - ppu / spu (cell) [Cell/Playstation 3 targets]
		Softfloat toolchains:
		   Include 'softfloat' in the 'vendor' field
		   e.g. armeb-softfloat-linux-uclibc  powerpc-booya_softfloat-linux-gnu
		EOF
		exit 0
	fi

	# Allow for laziness
	if [[ ${CTARGET} != *-* ]] ; then
		# First translate portage ARCH to actual tuple
		case ${CTARGET} in
			amd64)      CTARGET="x86_64";;
			parisc*)    CTARGET=${CTARGET/parisc/hppa};;
			ppc|ppc64)  CTARGET=${CTARGET/ppc/powerpc};;
			x86)        CTARGET="i686";;
		esac

		# Then add common suffixes
		case ${CTARGET} in
			i?86|x86_64)
				CTARGET="${CTARGET}-pc-linux-gnu";;
			s390*)
				CTARGET="${CTARGET}-ibm-linux-gnu";;
			alpha*|arm*|cris*|hppa*|ia64*|m68*|mips*|powerpc*|sparc*|sh*)
				CTARGET="${CTARGET}-unknown-linux-gnu";;
			bfin*|h8300*|nios2*|spu*|xc16x*)
				CTARGET="${CTARGET}-elf";;
		esac
	fi

	# Figure out an acceptable portage ARCH for this target
	case ${CTARGET} in
		alpha*)     TARCH=alpha;;
		arm*)       TARCH=arm;;
		hppa*)      TARCH=hppa;;
		ia64*)      TARCH=ia64    WITH_DEF_HEADERS="yes";;
		i?86*)      TARCH=x86;;
		m68*)       TARCH=m68k;;
		mips*)      TARCH=mips;;
		powerpc64*) TARCH=ppc64;;
		powerpc*)   TARCH=ppc;;
		sparc*)     TARCH=sparc;;
		s390*)      TARCH=s390;;
		sh*)        TARCH=sh;;
		x86_64*)    TARCH=amd64;;
		*)          TARCH="*";;
	esac
	case ${CTARGET} in
		*-freebsd*) TARCH="${TARCH}-fbsd";;
	esac

	# Now account for all the "special" architectures out there
	case ${CTARGET} in
		avr*) KPKG="[none]"; STAGE_DEFAULT=${STAGE_LIBC};
		      LCAT="dev-embedded"; LPKG="avr-libc";
		      GUSE=${GUSE_DISABLE};;

		mingw*|*-mingw*)
		      WITH_DEF_HEADERS="yes";
		      KCAT="dev-util"; KPKG="w32api";
		      LCAT="dev-util"; LPKG="mingw-runtime";;

		msp430)
		      STAGE_DEFAULT=${STAGE_BINUTILS};;

		nios2*)
		      BPKG="binutils-nios2";
		      GPKG="gcc-nios2";;

		cell) einfo "The cell target is really an alias for the spu/ppu targets"
		      ${CROSSDEV} -t ppu || exit 1
		      ${CROSSDEV} -t spu-elf || exit 1
		      exit 0;;
		spu*) TARCH=ppc64;
		      KPKG="[none]";
		      LPKG="newlib";;
		ppu*) TARCH=ppc64;;

		ps2)  einfo "The ps2 target is really an alias for the ee/iop/dvp targets"
		      ${CROSSDEV} -t ee  || exit 1
		      ${CROSSDEV} -t iop || exit 1
		      ${CROSSDEV} -t dvp || exit 1
		      exit 0;;
		ee*)  TARCH=mips;
		      KPKG="[none]"
		      GVER="3.2.2"; BVER="2.14";
		      STAGE_DEFAULT=${STAGE_C_ONLY};
		      GUSE=${GUSE_DISABLE};;
		iop*) TARCH=mips;
		      GVER="3.2.2"; BVER="2.14";
		      STAGE_DEFAULT=${STAGE_C_ONLY};
		      GUSE=${GUSE_DISABLE};;
		dvp*) TARCH=mips;
		      GVER="3.2.2"; BVER="2.14";
		      STAGE_DEFAULT=${STAGE_BINUTILS};;
	esac

	# Tweak packages based upon CTARGET
	case ${CTARGET} in
		# Normal Linux host, just diff libc
		*-dietlibc) LPKG="dietlibc"; LCAT="dev-libs";;
		*-gnu*)     LPKG="glibc";;
		*-klibc)    LPKG="klibc";;
		*-uclibc*)  LPKG="uclibc";;
		*-uclinux)  LPKG="uclibc";;

		# Bare metal targets
		*-newlib|*-elf)
			LPKG="newlib"
			KPKG="[none]"
			STAGE_DEFAULT=${STAGE_LIBC}
			;;

		# Now for the BSDs ...
		*-freebsd*)
			LCAT="sys-freebsd" LPKG="freebsd-lib"
			KPKG="[none]"
			;;
	esac
}

setup_portage_vars() {
	PORTDIR_OVERLAYS=$(portageq envvar PORTDIR_OVERLAY)
	PORTDIR_OVERLAY=${PORTDIR_OVERLAYS%% *}
	PORTDIR=$(portageq envvar PORTDIR)
	PORT_LOGDIR=$(portageq envvar PORT_LOGDIR)
	PORT_LOGDIR=${PORT_LOGDIR:-/var/log/portage}
	export PKGDIR=$(portageq envvar PKGDIR)/cross/${CTARGET}
	export PORTAGE_TMPDIR=$(portageq envvar PORTAGE_TMPDIR)/cross/${CTARGET}
	[[ ! -d ${PORT_LOGDIR} ]] && mkdir -p ${PORT_LOGDIR}
	[[ ! -d ${PORTAGE_TMPDIR} ]] && mkdir -p ${PORTAGE_TMPDIR}
}

uninstall() {
	setup_portage_vars

	ewarn "Uninstalling target '${CTARGET}' ..."

	[[ -d ${PORTDIR_OVERLAY}/cross-${CTARGET} ]] \
		&& rm -r ${PORTDIR_OVERLAY}/cross-${CTARGET}
	sed -i -e "/^cross-${CTARGET}$/d" /etc/portage/categories
	for f in package.{mask,keywords,use} ; do
		f="/etc/portage/${f}"
		if [[ -d ${f} ]] ; then
			rm -f "${f}"/cross-${CTARGET}
		elif [[ -f ${f} ]] ; then
			sed -i -e "/cross-${CTARGET}\//d" "${f}"
		fi
	done

	if [[ ! -d /var/db/pkg/cross-${CTARGET} ]] ; then
		eerror "${CTARGET} is not installed."
		exit 1
	fi

	export CLEAN_DELAY=0
	cd /var/db/pkg
	for p in cross-${CTARGET}/* ; do
		emerge -C =${p} || exit 1
	done
	for b in addr2line ar as c++filt ld nm objcopy objdump ranlib readelf size strings strip ; do
		rm -f /usr/bin/${CTARGET}-${b} /usr/${CTARGET}/bin/${b}
	done
	rm -f /usr/${CTARGET}/{sys-include,usr}
	rm -f /usr/bin/${CTARGET}-{gcc,{c,g}++,cpp,gfortran,gcov}
	rmdir /usr/${CTARGET}/{include/asm,include} &> /dev/null
	for d in /usr/${CTARGET} /usr/lib/gcc{,-lib}/${CTARGET} ; do
		if [[ ! -d ${d} ]] ; then
			rm -f "${d}" &> /dev/null
		else
			rmdir "${d}" &> /dev/null && continue
			rm -ri "${d}"
		fi
	done
	rm -f /etc/env.d/{binutils,gcc}/config-${CTARGET}
	rmdir /var/db/pkg/cross-${CTARGET}

	exit 0
}

set_withval() {
	local withval varname
	varname=${*#--with-}
	varname=${varname#--without-}
	varname=${varname%%=*}
	if [[ $* == *=* ]] ; then
		withval=${*#*=}
	else
		[[ $* == --with-* ]] && withval="yes" || withval="no"
	fi

	echo WITH_`echo ${varname} | tr '[:lower:]' '[:upper:]'`=\"${withval}\"
}

is_stage() { [[ ${STAGE} -ge $1 ]] ; }
is_s0()    { is_stage 0 ; }
is_s1()    { is_stage 1 ; }
is_s2()    { is_stage 2 ; }
is_s3()    { is_stage 3 ; }
is_s4()    { is_stage 4 ; }
is_s5()    { is_stage 5 ; }

with_headers()   { [[ ${WITH_HEADERS}   == "yes" ]] ; }

ex_fast()    { [[ ${EX_FAST}    == "yes" ]] ; }
ex_gcc()     { [[ ${EX_GCC}     == "yes" ]] ; }
ex_gdb()     { [[ ${EX_GDB}     == "yes" ]] ; }
ex_insight() { [[ ${EX_INSIGHT} == "yes" ]] ; }

hr() {
	local c=${COLUMNS:-0}
	if [[ ${c} -eq 0 ]] ; then
		c=$(stty size 2> /dev/null)
		[[ -z ${c} ]] \
			&& c=50 \
			|| c=${c##* }
	fi
	local ext=${1:-  _  -  ~  -}
	local sext=${ext//?/ }
	local br=$(printf "%$((c + ${#ext}))s")
	local banner=${br//${sext}/${ext}}
	echo "${banner:0:${c}}"
}

##################
### setup vars ###
CROSSDEV=$0
EOPTS=
UOPTS=
TARCH=
HARCH=$(unset ARCH ; portageq envvar ARCH)
CTARGET=
STAGE=""
BCAT="sys-devel"  ; BPKG="binutils"      ; BVER="" ; BUSE=""
GCAT="sys-devel"  ; GPKG="gcc"           ; GVER="" ; GUSE=""
KCAT="sys-kernel" ; KPKG="linux-headers" ; KVER="" ; KUSE=""
LCAT="sys-libs"   ; LPKG=""              ; LVER="" ; LUSE=""
DEFAULT_VER="[latest]"
GUSE_DISABLE="-boundschecking -d -fortran -gtk -gcj -libffi -mudflap -objc -objc++ -objc-gc -openmp"
GUSE_DISABLE_STAGE_2=${GUSE_DISABLE/-fortran}
WITH_HEADERS="COW"   WITH_DEF_HEADERS="yes" #227065 gcc-4.3+ is a pita w/out headers
EX_FAST="no"
EX_GCC="no"
EX_GDB="no"
SET_X="no"

while [[ $# -gt 0 ]] ; do
	case $1 in
	-V|--version)   echo "crossdev-GENTOO_PV"; exit 0;;
	-t|--target)    shift; parse_target $1;;
	--b|--binutils) shift; BVER=$1;;
	--g|--gcc)      shift; GVER=$1;;
	--k|--kernel)   shift; KVER=$1;;
	--l|--libc)     shift; LVER=$1;;
	-S|--stable)    DEFAULT_VER="[stable]";;
	-C|--clean)     shift; parse_target $1; uninstall;;
	-s?|--stage?)   STAGE=${1:0-1};;
	--ex-only)      EX_FAST="yes";;
	--ex-gcc)       EX_GCC="yes";;
	--ex-gdb)       EX_GDB="yes";;
	--ex-insight)   EX_INSIGHT="yes";;
	--with-*)       eval $(set_withval $1);;
	--without-*)    eval $(set_withval $1);;
	-x)             SET_X="yes";;
	-P|--portage)   UOPTS="${UOPTS} $2"; shift;;
	-b|-d|-p|-v|-q) UOPTS="${UOPTS} $1";;
	-pv|-vp)        UOPTS="${UOPTS} -p -v";;
	-h|--help)      usage;;
	-*)             eerror "UNKNOWN OPTION: '$1'" ; usage 1;;
	*)              parse_target $1;;
	esac
	shift
done
[[ ${SET_X} == "yes" ]] && set -x

BVER=${BVER:-${DEFAULT_VER}}
GVER=${GVER:-${DEFAULT_VER}}
KVER=${KVER:-${DEFAULT_VER}}
LVER=${LVER:-${DEFAULT_VER}}
STAGE=${STAGE:-${STAGE_DEFAULT}}
[[ -z ${CTARGET} ]] && usage 1
for with in HEADERS ; do
	var=WITH_${with} defvar=WITH_DEF_${with}
	[[ ${!var} == "COW" ]] && eval ${var}=${!defvar}
done

#####################
### sanity checks ###
if ! binutils-config --version &> /dev/null ; then
	eerror "Sorry, but your host system needs to have binutils-config"
	eerror "in order to keep from screwing things up."
	eerror "That means you must be running unstable versions of"
	eerror "both binutils and binutils-config."
	exit 1
fi
if ! egrep -qs 'inherit.*toolchain( |$)' /var/db/pkg/sys-devel/gcc-*/*.ebuild ; then
	eerror "Sorry, but your host system needs to have"
	eerror "an unstable version of gcc in order to"
	eerror "keep from screwing things up."
	exit 1
fi

setup_portage_vars
if [[ -z ${PORTDIR_OVERLAY} ]] ; then
	eerror "You need to set PORTDIR_OVERLAY in your make.conf."
	eerror "A standard setting is /usr/local/portage"
	exit 1
fi

if [[ $(unset CHOST ; portageq envvar CHOST) == ${CTARGET} ]] ; then
	eerror "Refusing to create a cross-compiler using the same"
	eerror "target name as your host utils."
	exit 1
fi

# grab user settings
for v in ABI UCLIBC_CPU USE BVER GVER KVER LVER STAGE CFLAGS LDFLAGS ASFLAGS ; do
	if [[ -e /etc/portage/crossdev/${CTARGET}/${v} ]] ; then
		# yes, quotes are needed in this instance (export $var="...")
		export ${v}="$(</etc/portage/crossdev/${CTARGET}/${v})"
		einfo "Restoring user setting '${v}' to '${!v}'"
	fi
	if [[ -e /etc/portage/crossdev/${CTARGET}/env ]] ; then
		einfo "Restoring generic user env settings"
		source /etc/portage/crossdev/${CTARGET}/env
	fi
done

#####################
### do the emerge ###
(
hr -
einfo "Host Portage ARCH:     ${HARCH}"
einfo "Target Portage ARCH:   ${TARCH}"
einfo "Target System:         ${CTARGET}"
einfo "Stage:                 ${STAGE} (${STAGE_DISP[${STAGE}]})"
echo
ex_fast || {
is_s0 && {
einfo "binutils:              ${BPKG}-${BVER}"
}
is_s1 && {
einfo "gcc:                   ${GPKG}-${GVER}"
}
is_s2 && {
[[ ${KPKG} != "[none]" ]] && \
einfo "headers:               ${KPKG}-${KVER}"
}
is_s3 && {
einfo "libc:                  ${LPKG}-${LVER}"
}
}
ex_gcc && {
einfo "Extra: gcc pass:       DO IT"
}
ex_gdb && {
einfo "Extra: gdb:            DO IT"
}
ex_insight && {
einfo "Extra: insight:        DO IT"
}
echo
einfo "PORTDIR_OVERLAY:       ${PORTDIR_OVERLAY}"
einfo "PORT_LOGDIR:           ${PORT_LOGDIR}"
einfo "PKGDIR:                ${PKGDIR}"
einfo "PORTAGE_TMPDIR:        ${PORTAGE_TMPDIR}"
hr
) >& ${PORT_LOGDIR}/cross-${CTARGET}-info.log || exit 1
cat ${PORT_LOGDIR}/cross-${CTARGET}-info.log
emerge -v --info >> ${PORT_LOGDIR}/cross-${CTARGET}-info.log

####################################
### Fix up portage files / paths ###

set_keywords() {
	local pkg=$1 ver=$2 output
	[[ -z ${pkg} ]] && return 0
	if [[ -f package.keywords ]] ; then
		output="package.keywords"
		sed -i -e "/^cross-${CTARGET}\/${pkg} /d" ${output}
	else
		output="package.keywords/cross-${CTARGET}"
	fi
	if [[ ${ver} == "["*"]" ]] || [[ -z ${ver} ]] ; then
		local keywords=""
		case ${ver} in
			"[stable]") keywords="${TARCH}";;
			*)          keywords="${TARCH} ~${TARCH}";;
		esac
		[[ "${TARCH}" != "${HARCH}" ]] && keywords="${keywords} -${HARCH} -~${HARCH}"
		echo "cross-${CTARGET}/${pkg} ${keywords}" >> ${output}
	else
		echo "cross-${CTARGET}/${pkg} * ~* **" >> ${output}
		if [[ -f package.mask ]] ; then
			output="package.mask"
			sed -i -e "/cross-${CTARGET}\/${pkg}/d" ${output}
		else
			output="package.mask/cross-${CTARGET}"
		fi
		echo ">cross-${CTARGET}/${pkg}-${ver}" >> ${output}
	fi
}
set_use() {
	local pkg=$1 output
	shift
	local use=$@
	[[ -z ${use} ]] && return 0
	if [[ -f package.use ]] ; then
		output="package.use"
	else
		output="package.use/cross-${CTARGET}"
	fi
	[[ -e ${output} ]] && sed -i -e "/cross-${CTARGET}\/${pkg}/d" ${output}
	echo "cross-${CTARGET}/${pkg} ${use}" >> ${output}
}
set_links() {
	local cat=$1 pkg=$2
	local s srcdir=${PORTDIR}
	rm -f "${PORTDIR_OVERLAY}"/cross-${CTARGET}/${pkg}
	for s in ${PORTDIR_OVERLAYS} ; do
		if [[ -d ${s}/${cat}/${pkg} ]] ; then
			einfo "Using ${cat}/${pkg} from ${s} instead of ${PORTDIR}"
			srcdir=${s}
			break
		fi
	done
	ln -s "${srcdir}"/${cat}/${pkg} "${PORTDIR_OVERLAY}"/cross-${CTARGET}/${pkg}
}
set_portage() {
	local cat=$1 pkg=$2 ver=$3
	shift ; shift ; shift
	local use=$@

	[[ ${pkg} == "[none]" ]] && return 0

	set_keywords ${pkg} ${ver}
	set_use ${pkg} ${use}
	set_links ${cat} ${pkg}
}

mkdir -p /etc/portage
grep -qs "^cross-${CTARGET}$" /etc/portage/categories \
	|| echo cross-${CTARGET} >> /etc/portage/categories
mkdir -p "${PORTDIR_OVERLAY}"/cross-${CTARGET}
cd /etc/portage
for f in package.{keywords,mask,use} ; do
	[[ -f ${f} ]] && continue
	mkdir -p ${f}
	rm -f ${f}/cross-${CTARGET}
done

set_portage ${BCAT} ${BPKG} ${BVER}
set_portage ${GCAT} ${GPKG} ${GVER}
set_portage ${KCAT} ${KPKG} ${KVER}
set_portage ${LCAT} ${LPKG} ${LVER}
set_portage sys-devel gdb
set_portage dev-util insight

#################
emerged_with_use() {
	local pkg=$1 use=$2
	grep -qs ${use} /var/db/pkg/cross-${CTARGET}/${pkg}-*/USE
}
set_eopts_on_pkg_status() {
	emerged_with_use "$@" \
		&& EOPTS=${EOPTS_DEF} \
		|| EOPTS=${EOPTS_UP}
}
doemerge() {
	[[ $1 == "[none]" ]] && return 0

	local logfile=${PORT_LOGDIR}/cross-${CTARGET}
	[[ -z $2 ]] \
		&& logfile=${logfile}-$1.log \
		|| logfile=${logfile}-$2.log

	einfo "Log: ${logfile}"
	ebegin "Emerging cross-${2:-$1}"

	set_use $1 ${USE}

	if [[ ${UOPTS/-v} != ${UOPTS} || ${UOPTS/-p} != ${UOPTS} ]] ; then
		emerge cross-${CTARGET}/$1 ${EOPTS} \
			2>&1 | tee ${logfile}
	else
		emerge cross-${CTARGET}/$1 ${EOPTS} \
			>& ${logfile}
	fi
	local _pipestatus=${PIPESTATUS[*]}
	[[ "${_pipestatus// /}" -eq 0 ]] || die "$1 failed :("
	eend 0
}

# we include the '-u' so that we don't re-emerge packages
EOPTS_DEF="${UOPTS} --nodeps --oneshot"
EOPTS_UP="${EOPTS_DEF} -u"
EOPTS=${EOPTS_UP}
# keep things like --ask from screwing us up
export EMERGE_DEFAULT_OPTS=""

# maybe someday this work, but that day != today
USE="${USE} -selinux"

# make sure multilib crap doesn't screw us over
export ABI=${ABI:-pos} LIBDIR_pos="lib" CFLAGS_pos="" LDFLAGS_pos=""

# only allow UCLIBC_CPU from env, not from make.conf/profile
export UCLIBC_CPU=${UCLIBC_CPU}

ex_fast || {

ebegin "Forcing the latest versions of {binutils,gcc}-config/gnuconfig"
emerge {binutils,gcc}-config gnuconfig -qu --ignore-default-opts &> /dev/null
eend $? || exit 1

doemerge ${BPKG}

is_s1 || exit 0
if with_headers ; then
USE="${KUSE} ${USE}" CROSSCOMPILE_OPTS="headers-only" \
	doemerge ${KPKG} ${KPKG}-quick
[[ -n ${LPKG} ]] && \
USE="${LUSE} ${USE}" CROSSCOMPILE_OPTS="headers-only" \
	doemerge ${LPKG} ${LPKG}-headers
fi
USE="${GUSE} ${USE} ${GUSE_DISABLE} nocxx" CROSSCOMPILE_OPTS="bootstrap" \
	doemerge ${GPKG} ${GPKG}-stage1

is_s2 || exit 0
set_eopts_on_pkg_status ${KPKG} crosscompile_opts_headers-only
USE="${KUSE} ${USE}" CROSSCOMPILE_OPTS="" \
	doemerge ${KPKG}

is_s3 || exit 0
[[ -z ${LPKG} ]] && die "Invalid target '${CTARGET}': unknown libc"
set_eopts_on_pkg_status ${LPKG} crosscompile_opts_headers-only
USE="${LUSE} ${USE}" CROSSCOMPILE_OPTS="" \
	doemerge ${LPKG}

is_s4 || exit 0
set_eopts_on_pkg_status ${GPKG} crosscompile_opts_bootstrap
EOPTS="${EOPTS_UP} --newuse"
USE="${GUSE} ${USE} ${GUSE_DISABLE_STAGE_2}" \
	doemerge ${GPKG} ${GPKG}-stage2

}

EOPTS="${EOPTS_UP} --newuse"
ex_gcc && USE="${GUSE} ${USE}" doemerge ${GPKG} ${GPKG}-extra
ex_gdb && doemerge gdb
ex_insight && doemerge insight

exit 0