summaryrefslogtreecommitdiff
blob: 4c0f36249a7d624d335061176c170ce31deec280 (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
#!/bin/bash
# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

# Format of /etc/env.d/binutils/:
#  config-TARGET:	CURRENT=version for TARGET
#  TARGET-VER:		has a TARGET and VER variable

EPREFIX="@GENTOO_PORTAGE_EPREFIX@"
if [[ ${EPREFIX} == "@"GENTOO_PORTAGE_EPREFIX"@" ]] ; then
	EPREFIX=""
fi

: ${ROOT:=/}
[[ ${ROOT} != */ ]] && ROOT="${ROOT}/"
[[ ${ROOT} != /* ]] && ROOT="${PWD%/}/${ROOT}"

EROOT="${ROOT%/}${EPREFIX}/"

cd "${EPREFIX}/"

trap ":" INT QUIT TSTP

argv0=${0##*/}
FUNCTIONS_SH="${EPREFIX}/lib/gentoo/functions.sh"
source ${FUNCTIONS_SH} || {
	echo "${argv0}: Could not source ${FUNCTIONS_SH}!" 1>&2
	exit 1
}
esyslog() { :; }
die() { eerror "${argv0}: $*"; exit 1; }
umask 022

usage() {
cat << USAGE_END
Usage: ${HILITE}binutils-config${NORMAL} ${GOOD}[options]${NORMAL} ${BRACKET}[binutils profile]${NORMAL}

${HILITE}General Options:${NORMAL}
  ${GOOD}-c, --get-current-profile${NORMAL}  Print current profile
  ${GOOD}-l, --list-profiles${NORMAL}        Print a list of available profiles
  ${GOOD}-u, --uninstall${NORMAL}            Remove all signs of specified target
  ${GOOD}-d, --debug${NORMAL}                Execute with debug output

${HILITE}General Cruft:${NORMAL}
  ${GOOD}--linker${NORMAL} <linker>          Switch to specified linker (if supported)

Profile names are of the form:  ${BRACKET}<CTARGET>-<binutils version>${NORMAL}
For example:                    ${BRACKET}i686-pc-linux-gnu-2.15.92.0.2${NORMAL}

For more info, please see ${HILITE}binutils-config${NORMAL}(8).
USAGE_END

	exit ${1:-1}
}

mv_if_diff() {
	if cmp -s "$1" "$2" ; then
		rm -f "$1"
	else
		mv -f "$1" "$2"
	fi
}
atomic_ln() {
	local target=$1 linkdir=$2 linkname=$3 linktmp linkfull
	linktmp="${linkdir}/.binutils-config.tmp.${linkname}"
	linkfull="${linkdir}/${linkname}"
	if [[ -d ${linkfull} ]] ; then
		# if linking to a dir, we need a little magic to
		# make it atomic since `mv -T` is not portable
		rm -rf "${linktmp}"
		mkdir -p "${linktmp}"
		ln -sf "${target}" "${linktmp}/${linkname}"
		mv "${linktmp}/${linkname}" "${linktmp}/../"
		rmdir "${linktmp}"
	else
		# `ln` will expand into unlink();symlink(); which
		# is not atomic for a small amount of time, but
		# `mv` is a single rename() call
		ln -sf "${target}" "${linktmp}"
		mv "${linktmp}" "${linkfull}"
	fi
}

setup_env() {
	unset TARGET VER LIBPATH
	source "${ENV_D}/${PROFILE}"
	if [[ -z ${TARGET} ]] ; then
		eerror "${PROFILE} is invalid (no \$TARGET defined) :("
		return 1
	fi
	if [[ -z ${VER} ]] ; then
		eerror "${PROFILE} is invalid (no \$VER defined) :("
		return 1
	fi

	#
	# Generate binary symlinks
	#
	BINPATH=""
	BINPATH_LINKS=""
	if [[ ${TARGET} != ${HOST} ]] ; then
		#
		# Newer paths: /usr/${HOST}/${TARGET}/...
		# Older paths: /usr/${TARGET}/...
		#
		if [[ -d "${EROOT}"/usr/${HOST}/${TARGET}/binutils-bin/${VER} ]] ; then
			BINPATH="${EPREFIX}"/usr/${HOST}/${TARGET}/binutils-bin/${VER}
			BINPATH_LINKS="${EPREFIX}"/usr/libexec/gcc/${TARGET}
		fi
	fi
	if [[ -z ${BINPATH} ]] ; then
		BINPATH="${EPREFIX}"/usr/${TARGET}/binutils-bin/${VER}
		BINPATH_LINKS="${EPREFIX}"/usr/${TARGET}/bin
	fi
}

# Lists of headers that various versions have installed.
HEADERS=(
	ansidecl.h bfd.h bfdlink.h demangle.h dis-asm.h dyn-string.h
	fibheap.h hashtab.h libiberty.h objalloc.h plugin-api.h
	splay-tree.h symcat.h
)

switch_profile() {
	local x

	ebegin "Switching to ${PROFILE}"

	setup_env || return 1

	cd "${ROOT}/${BINPATH}" || exit 1
	mkdir -p "${ROOT}/${BINPATH_LINKS}" "${EROOT}/usr/bin"
	for x in * ; do
		atomic_ln "${BINPATH}/${x}" "${ROOT}/${BINPATH_LINKS}" "${x}"
		atomic_ln "${BINPATH_LINKS}/${x}" "${EROOT}/usr/bin" "${TARGET}-${x}"
		if [[ ${TARGET} == ${HOST} ]] ; then
			atomic_ln "${TARGET}-${x}" "${EROOT}/usr/bin" "${x}"
		fi
	done

	#
	# Generate library / ldscripts symlinks
	#
	: ${LIBPATH:=${EPREFIX}/usr/lib/binutils/${TARGET}/${VER}}
	cd "${ROOT}/${LIBPATH}" || exit 1
	if [[ ${TARGET} == ${HOST} ]] ; then
		dstlib=${EROOT}/usr/${HOST}/lib
	else
		dstlib=${EROOT}/usr/${HOST}/${TARGET}/lib
	fi
	# When upgrading, we need to clean up ldscripts and libs.
	# Don't symlink back in the libs -- the binutils-lib package handles
	# these now.
	# TODO: Stop requiring even the ldscripts symlink.
	mkdir -p "${dstlib}"
	rm -rf "${ROOT}/${BINPATH_LINKS}"/ldscripts
	atomic_ln "${LIBPATH}/ldscripts" "${dstlib}" "ldscripts"
	find -L "${dstlib}" -xtype l -name 'lib*' -exec rm -f {} +

	#
	# Clean out old generated include symlinks
	#
	INCPATH=${LIBPATH}/include
	if [[ -d ${ROOT}/${INCPATH} ]] ; then
		cd "${ROOT}/${INCPATH}" || exit 1
		if [[ ${HOST} == ${TARGET} ]] ; then
			# The binutils-lib package handles these files now.
			for x in libiberty "${HEADERS[@]}" ; do
				x="${EROOT}/usr/include/${x}"
				if [[ -L ${x} ]] ; then
					rm "${x}"
				fi
			done
		else
			# Clean out old path -- cannot use '-exec {} +' syntax here
			find . -type f -exec rm -f "${EROOT}/usr/${TARGET}/usr/include/{}" \;
			rmdir "${EROOT}/usr/${TARGET}/usr/include" >& /dev/null
			rmdir "${EROOT}/usr/${TARGET}/usr" >& /dev/null
			rmdir "${EROOT}/usr/${TARGET}" >& /dev/null
		fi
	fi

	#
	# Make sure proper paths get updated
	#
	local env_update_flag="--no-ldconfig"
	if [[ ${TARGET} == ${HOST} ]] ; then
		# Delete old config now that binutils-libs installs these files.
		# Note: This skips ldconfig update if env.d had LDPATH, but meh.
		# Most people have upgraded to ld.so.conf.d, and someone else will
		# eventually re-run ldconfig for us.
		x="${EROOT}"/etc/ld.so.conf.d/05binutils.conf
		if [[ -e ${x} ]]; then
			rm -f "${x}"
			env_update_flag=""
		fi

		DATAPATH="${EPREFIX}"/usr/share/binutils-data/${TARGET}/${VER}
		local e="${EROOT}"/etc/env.d/05binutils
		local ee="${e}.tmp"
		rm -f "${ee}"
		[[ -d ${ROOT}/${DATAPATH}/man  ]] && echo "MANPATH=${DATAPATH}/man"   >> "${ee}"
		[[ -d ${ROOT}/${DATAPATH}/info ]] && echo "INFOPATH=${DATAPATH}/info" >> "${ee}"
		mv_if_diff "${ee}" "${e}"
	fi

	local c="${ENV_D}/config-${TARGET}"
	local cc="${c}.tmp"
	echo "CURRENT=${VER}" > "${cc}"
	mv_if_diff "${cc}" "${c}"

	eend 0

	#
	# Regen env.d if need/can be
	#
	if [[ ${ROOT} == "/" ]] && [[ ${TARGET} == ${HOST} ]] ; then
		env-update ${env_update_flag}
		echo
		ewarn "Please remember to run:"
		echo
		ewarn "  # . ${EPREFIX}/etc/profile"
		echo
	fi

	return 0
}

uninstall_target() {
	: ${TARGET:=${UARG}}

	if [[ ${TARGET} == ${HOST} ]] ; then
		die "refusing to uninstall native binutils"
	fi

	shopt -s nullglob
	PROFILE=""

	for PROFILE in "${ENV_D}"/${TARGET}-* ; do
		ewarn "Removing all signs of ${PROFILE##*/}"
		rm -f "${ENV_D}"/${PROFILE}
	done
	if [[ -z ${PROFILE} ]] && [[ ! -e ${ENV_D}/config-${TARGET} ]] ; then
		die "no profiles exist for '${TARGET}'"
	fi

	rm -f "${ENV_D}"/config-${TARGET}

	local x
	for x in \
		addr2line ar as c++filt elf2flt elfedit flthdr gprof \
		ld ld.{bfd,gold,real} \
		nm objcopy objdump ranlib readelf size strings strip
	do
		x=(
			"${EROOT}"/usr/bin/${TARGET}-${x}
			"${EROOT}"/usr/{${HOST}/,}${TARGET}/bin/${x}
			"${EROOT}"/usr/libexec/gcc/${TARGET}/${x}
		)
		rm -f "${x[@]}"
	done
	for x in "${HEADERS[@]}" ; do
		rm -f "${EROOT}"/usr/{${HOST}/,}${TARGET}/{usr/,}include/${x}
	done
	for x in bfd iberty opcodes ; do
		rm -f "${EROOT}"/usr/${HOST}/${TARGET}/lib/lib${x}{{-*,}.so,.a,.la}
	done
	# Delete broken symlinks
	local destdir="${EROOT}/usr/${HOST}/${TARGET}"
	rm -f "${destdir}"/lib/ldscripts
	find -L "${destdir}"/lib -type l -exec rm {} +
	rmdir \
		"${destdir}"/{bin,include,lib,usr} \
		"${destdir}" \
		"${EROOT}"/var/db/pkg/cross-${TARGET} \
		"${EROOT}"/usr/{${HOST}/,}${TARGET}/bin \
		"${EROOT}"/usr/libexec/gcc/${TARGET} \
		2>/dev/null

	rm -f "${ENV_D}"/${TARGET}-*
}

set_current_profile() {
	if [[ ! -f ${ENV_D}/config-${TARGET} ]] ; then
		eerror "${argv0}: unable to locate a profile for target: ${TARGET}"
		return 1
	fi

	source "${ENV_D}/config-${TARGET}"

	if [[ -z ${CURRENT} ]] ; then
		eerror "${argv0}: no binutils profile is active!"
		return 1
	fi

	echo "${TARGET}-${CURRENT}"

	return 0
}
get_current_profile() { echo "${PROFILE}" ; }

list_profiles() {
	local x i target

	if [[ ${ROOT} != / ]] ; then
		echo "Using binutils-config info in ${ROOT}"
	fi

	set -- "${ENV_D}"/*
	target=
	i=1

	for x ; do
		# skip broken links and config files
		[[ -f ${x} ]] || continue
		[[ ${x} == */config-* ]] && continue

		source "${x}"
		if [[ ${target} != ${TARGET} ]] ; then
			[[ -n ${target} ]] && echo
			target=${TARGET}
		fi

		x=${x##*/}
		if [[ -e ${ENV_D}/config-${TARGET} ]] ; then
			source "${ENV_D}/config-${TARGET}"
			if [[ ${VER} == ${CURRENT} ]] ; then
				[[ ${TARGET} == ${HOST} ]] \
					&& x="${x} ${GOOD}*${NORMAL}" \
					|| x="${x} ${HILITE}*${NORMAL}"
			fi
		fi

		# We would align the [...] field like so:
		#printf ' [%*ss] %s\n' ${##} "${i}" "${x}"
		# but this breaks simple scripting: `binutils -l | awk '{print $2}'`

		# Or we could align the target col like so:
		#printf ' [%s]%*s %s\n' "${i}" $(( ${##} - ${#i} )) "" "${x}"
		# but i'm not sold that it looks better

		# So keep it simple ... only makes a diff anyways for crazy people
		# like me which have 100+ binutils packages installed ...
		echo " [$i] ${x}"
		((++i))
	done
}

switch_linker() {
	local bpath ld=$1

	case ${ld} in
	ld.*) ;;
	*) die "not supported: linker must start with 'ld.'" ;;
	esac

	setup_env || return 1
	bpath="${ROOT}/${BINPATH}"

	# does this binutils even support the requested linker ?
	if [[ ! -e ${bpath}/${ld} ]] ; then
		die "sorry, but ${PROFILE} doesn't support the ${ld} linker"
	fi

	# switch it up
	ebegin "Setting default linker to ${ld} for ${PROFILE}"
	atomic_ln ${ld} "${bpath}" ld
	eend $?
}

set_HOST() {
	# Set HOST to CHOST if it isn't already set
	: ${HOST:=${CHOST:-$(portageq envvar CHOST)}}
}

ENV_D="${EROOT}etc/env.d/binutils"

DEBUG="no"
NEED_ACTION="yes"
DOIT="switch_profile"
PROFILE="current"
HOST=""
TARGET=""
unset UARG

select_action() {
	if [[ ${NEED_ACTION} != "no" ]] ; then
		NEED_ACTION="no"
		DOIT=$1
	else
		die "one action at a time!"
	fi
}

while [[ $# -gt 0 ]] ; do
	x=$1
	shift
	case ${x} in
		-c|--get-current-profile)  select_action get_current_profile ;;
		-l|--list|--list-profiles) select_action list_profiles ;;
		-u|--uninstall)            select_action uninstall_target ;;
		--linker)                  select_action "switch_linker $1"; shift ;;
		-d|--debug)                DEBUG="yes" ;;
		-h|--help)                 usage 0 ;;
		-V|--version)
			unset Header
			cvsver="$Id$"
			cvsver=${cvsver##*binutils-config-}
			bver=${cvsver%%,v *}
			cvsver=${cvsver#* }
			echo "binutils-config-${bver} (r${cvsver%% *})"
			exit 0
			;;
		-*)
			die "invalid switch!  Try '--help'."
			;;
		*)
			if [[ ${UARG+set} == "set" ]] ; then
				die "only one profile/target at a time please"
			fi
			NEED_ACTION="maybe"
			UARG=${x}
			;;
	esac
done

[[ ${NEED_ACTION} == "yes" ]] && usage 1
[[ ${DEBUG} == "yes" ]] && set -x

# All operations need to know the current HOST to figure out
# what is a native target and what is a cross target
set_HOST

# All operations need to know the profile the user wants
case ${DOIT} in
switch_profile|switch_linker_*)
	# decode user's profile choice
	x=${UARG:-$(TARGET=${HOST} set_current_profile)}
	PROFILE=""
	if [[ -z $(echo ${x} | tr -d '[:digit:]') ]] ; then
		# User gave us a # representing the profile
		i=1
		for y in "${ENV_D}"/* ; do
			[[ ${y/config-} != ${y} ]] && continue

			if [[ -f ${y} ]] && [[ ${x} -eq ${i} ]] ; then
				PROFILE=${y##*/}
				break
			fi
			((++i))
		done
	fi

	if [[ -z ${PROFILE} ]] ; then
		# User gave us a full HOST-ver
		x=${x##*/}
		if [[ -f ${ENV_D}/${x} ]] ; then
			# Valid HOST-ver yeah!
			PROFILE=${x}
		else
			# Not a valid HOST-ver ...
			if [[ ! -f ${ENV_D}/config-${x} ]] ; then
				# Maybe they just gave us a ver ...
				if [[ -f ${ENV_D}/${HOST}-${x} ]] ; then
					x=${HOST}-${x}
				else
					die "could not locate '$x' in '${ENV_D}/'!"
				fi
				PROFILE=${x}
			else
				# Maybe they just gave us a target ... pick active profile
				PROFILE=$(TARGET=${x} set_current_profile)
			fi
		fi
	fi
	;;
*)
	# lookup current profile as the user gave us a target
	PROFILE=$(TARGET=${UARG:-${HOST}} set_current_profile) || exit 1
	;;
esac

eval ${DOIT}

# vim:ts=4