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1# Copyright 1999-2006 Gentoo Foundation 1# Copyright 1999-2007 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.63 2006/12/16 10:31:12 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.91 2009/05/24 07:25:48 grobian Exp $
4# 4
5# @ECLASS: toolchain-funcs.eclass
6# @MAINTAINER:
5# Author: Toolchain Ninjas <toolchain@gentoo.org> 7# Toolchain Ninjas <toolchain@gentoo.org>
6# 8# @BLURB: functions to query common info about the toolchain
7# This eclass contains (or should) functions to get common info 9# @DESCRIPTION:
8# about the toolchain (libc/compiler/binutils/etc...) 10# The toolchain-funcs aims to provide a complete suite of functions
11# for gleaning useful information about the toolchain and to simplify
12# ugly things like cross-compiling and multilib. All of this is done
13# in such a way that you can rely on the function always returning
14# something sane.
9 15
10inherit multilib 16___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
17[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
11 18
12DESCRIPTION="Based on the ${ECLASS} eclass" 19DESCRIPTION="Based on the ${ECLASS} eclass"
13 20
14tc-getPROG() { 21tc-getPROG() {
15 local var=$1 22 local var=$1
27 34
28 export ${var}=${prog} 35 export ${var}=${prog}
29 echo "${!var}" 36 echo "${!var}"
30} 37}
31 38
32# Returns the name of the archiver 39# @FUNCTION: tc-getAR
40# @USAGE: [toolchain prefix]
41# @RETURN: name of the archiver
33tc-getAR() { tc-getPROG AR ar "$@"; } 42tc-getAR() { tc-getPROG AR ar "$@"; }
34# Returns the name of the assembler 43# @FUNCTION: tc-getAS
44# @USAGE: [toolchain prefix]
45# @RETURN: name of the assembler
35tc-getAS() { tc-getPROG AS as "$@"; } 46tc-getAS() { tc-getPROG AS as "$@"; }
47# @FUNCTION: tc-getCC
48# @USAGE: [toolchain prefix]
36# Returns the name of the C compiler 49# @RETURN: name of the C compiler
37tc-getCC() { tc-getPROG CC gcc "$@"; } 50tc-getCC() { tc-getPROG CC gcc "$@"; }
51# @FUNCTION: tc-getCPP
52# @USAGE: [toolchain prefix]
38# Returns the name of the C preprocessor 53# @RETURN: name of the C preprocessor
39tc-getCPP() { tc-getPROG CPP cpp "$@"; } 54tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55# @FUNCTION: tc-getCXX
56# @USAGE: [toolchain prefix]
40# Returns the name of the C++ compiler 57# @RETURN: name of the C++ compiler
41tc-getCXX() { tc-getPROG CXX g++ "$@"; } 58tc-getCXX() { tc-getPROG CXX g++ "$@"; }
42# Returns the name of the linker 59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
43tc-getLD() { tc-getPROG LD ld "$@"; } 62tc-getLD() { tc-getPROG LD ld "$@"; }
44# Returns the name of the strip prog 63# @FUNCTION: tc-getSTRIP
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the strip program
45tc-getSTRIP() { tc-getPROG STRIP strip "$@"; } 66tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67# @FUNCTION: tc-getNM
68# @USAGE: [toolchain prefix]
46# Returns the name of the symbol/object thingy 69# @RETURN: name of the symbol/object thingy
47tc-getNM() { tc-getPROG NM nm "$@"; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
48# Returns the name of the archiver indexer 73# @RETURN: name of the archiver indexer
49tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } 74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
75# @FUNCTION: tc-getOBJCOPY
76# @USAGE: [toolchain prefix]
77# @RETURN: name of the object copier
78tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
79# @FUNCTION: tc-getF77
80# @USAGE: [toolchain prefix]
50# Returns the name of the fortran 77 compiler 81# @RETURN: name of the Fortran 77 compiler
51tc-getF77() { tc-getPROG F77 f77 "$@"; } 82tc-getF77() { tc-getPROG F77 f77 "$@"; }
83# @FUNCTION: tc-getFC
84# @USAGE: [toolchain prefix]
52# Returns the name of the fortran 90 compiler 85# @RETURN: name of the Fortran 90 compiler
53tc-getF90() { tc-getPROG F90 gfortran "$@"; } 86tc-getFC() { tc-getPROG FC gfortran "$@"; }
54# Returns the name of the fortran compiler 87# @FUNCTION: tc-getGCJ
55tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; } 88# @USAGE: [toolchain prefix]
56# Returns the name of the java compiler 89# @RETURN: name of the java compiler
57tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
58 91
59# Returns the name of the C compiler for build 92# @FUNCTION: tc-getBUILD_CC
93# @USAGE: [toolchain prefix]
94# @RETURN: name of the C compiler for building binaries to run on the build machine
60tc-getBUILD_CC() { 95tc-getBUILD_CC() {
61 local v 96 local v
62 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do 97 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
63 if [[ -n ${!v} ]] ; then 98 if [[ -n ${!v} ]] ; then
64 export BUILD_CC=${!v} 99 export BUILD_CC=${!v}
76 111
77 export BUILD_CC=${search} 112 export BUILD_CC=${search}
78 echo "${search}" 113 echo "${search}"
79} 114}
80 115
116# @FUNCTION: tc-export
117# @USAGE: <list of toolchain variables>
118# @DESCRIPTION:
81# Quick way to export a bunch of vars at once 119# Quick way to export a bunch of compiler vars at once.
82tc-export() { 120tc-export() {
83 local var 121 local var
84 for var in "$@" ; do 122 for var in "$@" ; do
123 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
85 eval tc-get${var} > /dev/null 124 eval tc-get${var} > /dev/null
86 done 125 done
87} 126}
88 127
89# A simple way to see if we're using a cross-compiler ... 128# @FUNCTION: tc-is-cross-compiler
129# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
90tc-is-cross-compiler() { 130tc-is-cross-compiler() {
91 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 131 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
132}
133
134# @FUNCTION: tc-is-softfloat
135# @DESCRIPTION:
136# See if this toolchain is a softfloat based one.
137# @CODE
138# The possible return values:
139# - only: the target is always softfloat (never had fpu)
140# - yes: the target should support softfloat
141# - no: the target should support hardfloat
142# @CODE
143# This allows us to react differently where packages accept
144# softfloat flags in the case where support is optional, but
145# rejects softfloat flags where the target always lacks an fpu.
146tc-is-softfloat() {
147 case ${CTARGET} in
148 bfin*|h8300*)
149 echo "only" ;;
150 *)
151 [[ ${CTARGET//_/-} == *-softfloat-* ]] \
152 && echo "yes" \
153 || echo "no"
154 ;;
155 esac
156}
157
158# @FUNCTION: tc-is-static-only
159# @DESCRIPTION:
160# Return shell true if the target does not support shared libs, shell false
161# otherwise.
162tc-is-static-only() {
163 local host=${CTARGET:-${CHOST}}
164
165 # *MiNT doesn't have shared libraries, only platform so far
166 return $([[ ${host} == *-mint* ]])
92} 167}
93 168
94 169
95# Parse information from CBUILD/CHOST/CTARGET rather than 170# Parse information from CBUILD/CHOST/CTARGET rather than
96# use external variables from the profile. 171# use external variables from the profile.
102 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 177 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
103 178
104 case ${host} in 179 case ${host} in
105 alpha*) echo alpha;; 180 alpha*) echo alpha;;
106 arm*) echo arm;; 181 arm*) echo arm;;
182 avr*) ninj avr32 avr;;
107 bfin*) ninj blackfin bfin;; 183 bfin*) ninj blackfin bfin;;
108 cris*) echo cris;; 184 cris*) echo cris;;
109 hppa*) ninj parisc hppa;; 185 hppa*) ninj parisc hppa;;
110 i?86*) ninj i386 x86;; 186 i?86*)
187 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
188 # trees have been unified into 'x86'.
189 # FreeBSD still uses i386
190 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
191 echo i386
192 else
193 echo x86
194 fi
195 ;;
111 ia64*) echo ia64;; 196 ia64*) echo ia64;;
112 m68*) echo m68k;; 197 m68*) echo m68k;;
113 mips*) echo mips;; 198 mips*) echo mips;;
114 nios2*) echo nios2;; 199 nios2*) echo nios2;;
115 nios*) echo nios;; 200 nios*) echo nios;;
140 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 225 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
141 && ninj sparc64 sparc \ 226 && ninj sparc64 sparc \
142 || echo sparc 227 || echo sparc
143 ;; 228 ;;
144 vax*) echo vax;; 229 vax*) echo vax;;
145 x86_64*) ninj x86_64 amd64;; 230 x86_64*)
146 *) echo ${ARCH};; 231 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
232 # trees have been unified into 'x86'.
233 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
234 echo x86
235 else
236 ninj x86_64 amd64
237 fi
238 ;;
239
240 # since our usage of tc-arch is largely concerned with
241 # normalizing inputs for testing ${CTARGET}, let's filter
242 # other cross targets (mingw and such) into the unknown.
243 *) echo unknown;;
147 esac 244 esac
148} 245}
246# @FUNCTION: tc-arch-kernel
247# @USAGE: [toolchain prefix]
248# @RETURN: name of the kernel arch according to the compiler target
149tc-arch-kernel() { 249tc-arch-kernel() {
150 tc-ninja_magic_to_arch kern $@ 250 tc-ninja_magic_to_arch kern "$@"
151} 251}
252# @FUNCTION: tc-arch
253# @USAGE: [toolchain prefix]
254# @RETURN: name of the portage arch according to the compiler target
152tc-arch() { 255tc-arch() {
153 tc-ninja_magic_to_arch portage $@ 256 tc-ninja_magic_to_arch portage "$@"
154} 257}
258
155tc-endian() { 259tc-endian() {
156 local host=$1 260 local host=$1
157 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 261 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
158 host=${host%%-*} 262 host=${host%%-*}
159 263
176 x86_64*) echo little;; 280 x86_64*) echo little;;
177 *) echo wtf;; 281 *) echo wtf;;
178 esac 282 esac
179} 283}
180 284
181# Returns the version as by `$CC -dumpversion` 285# @FUNCTION: gcc-fullversion
286# @RETURN: compiler version (major.minor.micro: [3.4.6])
182gcc-fullversion() { 287gcc-fullversion() {
183 $(tc-getCC "$@") -dumpversion 288 $(tc-getCC "$@") -dumpversion
184} 289}
185# Returns the version, but only the <major>.<minor> 290# @FUNCTION: gcc-version
291# @RETURN: compiler version (major.minor: [3.4].6)
186gcc-version() { 292gcc-version() {
187 gcc-fullversion "$@" | cut -f1,2 -d. 293 gcc-fullversion "$@" | cut -f1,2 -d.
188} 294}
189# Returns the Major version 295# @FUNCTION: gcc-major-version
296# @RETURN: major compiler version (major: [3].4.6)
190gcc-major-version() { 297gcc-major-version() {
191 gcc-version "$@" | cut -f1 -d. 298 gcc-version "$@" | cut -f1 -d.
192} 299}
193# Returns the Minor version 300# @FUNCTION: gcc-minor-version
301# @RETURN: minor compiler version (minor: 3.[4].6)
194gcc-minor-version() { 302gcc-minor-version() {
195 gcc-version "$@" | cut -f2 -d. 303 gcc-version "$@" | cut -f2 -d.
196} 304}
197# Returns the Micro version 305# @FUNCTION: gcc-micro-version
306# @RETURN: micro compiler version (micro: 3.4.[6])
198gcc-micro-version() { 307gcc-micro-version() {
199 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- 308 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
200} 309}
201 310
311# Returns the installation directory - internal toolchain
312# function for use by _gcc-specs-exists (for flag-o-matic).
313_gcc-install-dir() {
314 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
315 awk '$1=="install:" {print $2}')"
316}
317# Returns true if the indicated specs file exists - internal toolchain
318# function for use by flag-o-matic.
319_gcc-specs-exists() {
320 [[ -f $(_gcc-install-dir)/$1 ]]
321}
322
202# Returns requested gcc specs directive 323# Returns requested gcc specs directive unprocessed - for used by
324# gcc-specs-directive()
203# Note; later specs normally overwrite earlier ones; however if a later 325# Note; later specs normally overwrite earlier ones; however if a later
204# spec starts with '+' then it appends. 326# spec starts with '+' then it appends.
205# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" 327# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
206# as "Reading <file>", in order. 328# as "Reading <file>", in order. Strictly speaking, if there's a
329# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
330# the same token anything from 'gcc -dumpspecs' is overridden by
331# the contents of $(gcc_install_dir)/specs so the result is the
332# same either way.
207gcc-specs-directive() { 333_gcc-specs-directive_raw() {
208 local cc=$(tc-getCC) 334 local cc=$(tc-getCC)
209 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}') 335 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
210 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ 336 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
211'BEGIN { pspec=""; spec=""; outside=1 } 337'BEGIN { pspec=""; spec=""; outside=1 }
212$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 338$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
215 { spec=spec $0 } 341 { spec=spec $0 }
216END { print spec }' 342END { print spec }'
217 return 0 343 return 0
218} 344}
219 345
346# Return the requested gcc specs directive, with all included
347# specs expanded.
348# Note, it does not check for inclusion loops, which cause it
349# to never finish - but such loops are invalid for gcc and we're
350# assuming gcc is operational.
351gcc-specs-directive() {
352 local directive subdname subdirective
353 directive="$(_gcc-specs-directive_raw $1)"
354 while [[ ${directive} == *%\(*\)* ]]; do
355 subdname=${directive/*%\(}
356 subdname=${subdname/\)*}
357 subdirective="$(_gcc-specs-directive_raw ${subdname})"
358 directive="${directive//\%(${subdname})/${subdirective}}"
359 done
360 echo "${directive}"
361 return 0
362}
363
220# Returns true if gcc sets relro 364# Returns true if gcc sets relro
221gcc-specs-relro() { 365gcc-specs-relro() {
222 local directive 366 local directive
223 directive=$(gcc-specs-directive link_command) 367 directive=$(gcc-specs-directive link_command)
224 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 368 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
225} 369}
226# Returns true if gcc sets now 370# Returns true if gcc sets now
227gcc-specs-now() { 371gcc-specs-now() {
228 local directive 372 local directive
229 directive=$(gcc-specs-directive link_command) 373 directive=$(gcc-specs-directive link_command)
230 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 374 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
231} 375}
232# Returns true if gcc builds PIEs 376# Returns true if gcc builds PIEs
233gcc-specs-pie() { 377gcc-specs-pie() {
234 local directive 378 local directive
235 directive=$(gcc-specs-directive cc1) 379 directive=$(gcc-specs-directive cc1)
236 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 380 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
237} 381}
238# Returns true if gcc builds with the stack protector 382# Returns true if gcc builds with the stack protector
239gcc-specs-ssp() { 383gcc-specs-ssp() {
240 local directive 384 local directive
241 directive=$(gcc-specs-directive cc1) 385 directive=$(gcc-specs-directive cc1)
242 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 386 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
243} 387}
244# Returns true if gcc upgrades fstack-protector to fstack-protector-all 388# Returns true if gcc upgrades fstack-protector to fstack-protector-all
245gcc-specs-ssp-to-all() { 389gcc-specs-ssp-to-all() {
246 local directive 390 local directive
247 directive=$(gcc-specs-directive cc1) 391 directive=$(gcc-specs-directive cc1)
248 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 392 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
249} 393}
394# Returns true if gcc builds with fno-strict-overflow
395gcc-specs-nostrict() {
396 local directive
397 directive=$(gcc-specs-directive cc1)
398 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
399}
250 400
251 401
402# @FUNCTION: gen_usr_ldscript
403# @USAGE: [-a] <list of libs to create linker scripts for>
404# @DESCRIPTION:
252# This function generate linker scripts in /usr/lib for dynamic 405# This function generate linker scripts in /usr/lib for dynamic
253# libs in /lib. This is to fix linking problems when you have 406# libs in /lib. This is to fix linking problems when you have
254# the .so in /lib, and the .a in /usr/lib. What happens is that 407# the .so in /lib, and the .a in /usr/lib. What happens is that
255# in some cases when linking dynamic, the .a in /usr/lib is used 408# in some cases when linking dynamic, the .a in /usr/lib is used
256# instead of the .so in /lib due to gcc/libtool tweaking ld's 409# instead of the .so in /lib due to gcc/libtool tweaking ld's
257# library search path. This cause many builds to fail. 410# library search path. This causes many builds to fail.
258# See bug #4411 for more info. 411# See bug #4411 for more info.
259# 412#
260# To use, simply call:
261#
262# gen_usr_ldscript libfoo.so
263#
264# Note that you should in general use the unversioned name of 413# Note that you should in general use the unversioned name of
265# the library, as ldconfig should usually update it correctly 414# the library (libfoo.so), as ldconfig should usually update it
266# to point to the latest version of the library present. 415# correctly to point to the latest version of the library present.
267_tc_gen_usr_ldscript() { 416gen_usr_ldscript() {
268 local lib libdir=$(get_libdir) output_format="" 417 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
418 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
419
420 tc-is-static-only && return
421
269 # Just make sure it exists 422 # Just make sure it exists
270 dodir /usr/${libdir} 423 dodir /usr/${libdir}
424
425 if [[ $1 == "-a" ]] ; then
426 auto=true
427 shift
428 dodir /${libdir}
429 fi
271 430
272 # OUTPUT_FORMAT gives hints to the linker as to what binary format 431 # OUTPUT_FORMAT gives hints to the linker as to what binary format
273 # is referenced ... makes multilib saner 432 # is referenced ... makes multilib saner
274 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 433 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
275 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 434 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
276 435
277 for lib in "$@" ; do 436 for lib in "$@" ; do
278 if [[ ${USERLAND} == "Darwin" ]] ; then 437 local tlib
279 ewarn "Not creating fake dynamic library for $lib on Darwin;" 438 if ${auto} ; then
280 ewarn "making a symlink instead." 439 lib="lib${lib}${suffix}"
281 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
282 else 440 else
441 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
442 # This especially is for AIX where $(get_libname) can return ".a",
443 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
444 [[ -r ${ED}/${libdir}/${lib} ]] || continue
445 #TODO: better die here?
446 fi
447
448 case ${CTARGET:-${CHOST}} in
449 *-darwin*)
450 if ${auto} ; then
451 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
452 else
453 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
454 fi
455 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
456 tlib=${tlib##*/}
457
458 if ${auto} ; then
459 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
460 rm -f "${ED}"/${libdir}/${lib}
461 fi
462
463 # Mach-O files have an id, which is like a soname, it tells how
464 # another object linking against this lib should reference it.
465 # Since we moved the lib from usr/lib into lib this reference is
466 # wrong. Hence, we update it here. We don't configure with
467 # libdir=/lib because that messes up libtool files.
468 # Make sure we don't lose the specific version, so just modify the
469 # existing install_name
470 install_name_tool \
471 -id "${EPREFIX}"/${libdir}/${tlib} \
472 "${ED}"/${libdir}/${tlib}
473 # Now as we don't use GNU binutils and our linker doesn't
474 # understand linker scripts, just create a symlink.
475 pushd "${ED}/usr/${libdir}" > /dev/null
476 ln -snf "../../${libdir}/${tlib}" "${lib}"
477 popd > /dev/null
478 ;;
479 *-aix*|*-irix*|*-hpux*|*-interix*|*-winnt*)
480 if ${auto} ; then
481 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
482 # no way to retrieve soname on these platforms (?)
483 tlib=$(readlink "${ED}"/${libdir}/${lib})
484 tlib=${tlib##*/}
485 if [[ -z ${tlib} ]] ; then
486 # ok, apparently was not a symlink, don't remove it and
487 # just link to it
488 tlib=${lib}
489 else
490 rm -f "${ED}"/${libdir}/${lib}
491 fi
492 else
493 tlib=${lib}
494 fi
495
496 # we don't have GNU binutils on these platforms, so we symlink
497 # instead, which seems to work fine. Keep it relative, otherwise
498 # we break some QA checks in Portage
499 # on interix, the linker scripts would work fine in _most_
500 # situations. if a library links to such a linker script the
501 # absolute path to the correct library is inserted into the binary,
502 # which is wrong, since anybody linking _without_ libtool will miss
503 # some dependencies, since the stupid linker cannot find libraries
504 # hardcoded with absolute paths (as opposed to the loader, which
505 # seems to be able to do this).
506 # this has been seen while building shared-mime-info which needs
507 # libxml2, but links without libtool (and does not add libz to the
508 # command line by itself).
509 pushd "${ED}/usr/${libdir}" > /dev/null
510 ln -snf "../../${libdir}/${tlib}" "${lib}"
511 popd > /dev/null
512 ;;
513 *)
514 if ${auto} ; then
515 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
516 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
517 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
518 # some SONAMEs are funky: they encode a version before the .so
519 if [[ ${tlib} != ${lib}* ]] ; then
520 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
521 fi
522 rm -f "${ED}"/${libdir}/${lib}
523 else
524 tlib=${lib}
525 fi
283 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 526 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
284 /* GNU ld script 527 /* GNU ld script
285 Since Gentoo has critical dynamic libraries 528 Since Gentoo has critical dynamic libraries in /lib, and the static versions
286 in /lib, and the static versions in /usr/lib, 529 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
287 we need to have a "fake" dynamic lib in /usr/lib, 530 run into linking problems. This "fake" dynamic lib is a linker script that
288 otherwise we run into linking problems. 531 redirects the linker to the real lib. And yes, this works in the cross-
532 compiling scenario as the sysroot-ed linker will prepend the real path.
289 533
290 See bug http://bugs.gentoo.org/4411 for more info. 534 See bug http://bugs.gentoo.org/4411 for more info.
291 */ 535 */
292 ${output_format} 536 ${output_format}
293 GROUP ( /${libdir}/${lib} ) 537 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
294 END_LDSCRIPT 538 END_LDSCRIPT
295 fi 539 ;;
540 esac
296 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 541 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
297 done 542 done
298} 543}
299gen_usr_ldscript() { _tc_gen_usr_ldscript "$@" ; }

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