/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2004 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 1.23 2005/01/15 01:19:28 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 <ninjas@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
10ECLASS=toolchain-funcs 16___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11INHERITED="$INHERITED $ECLASS" 17[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
12 18
13DESCRIPTION="Based on the ${ECLASS} eclass" 19DESCRIPTION="Based on the ${ECLASS} eclass"
14 20
15tc-getPROG() { 21tc-getPROG() {
16 local var=$1 22 local var=$1
19 if [[ -n ${!var} ]] ; then 25 if [[ -n ${!var} ]] ; then
20 echo "${!var}" 26 echo "${!var}"
21 return 0 27 return 0
22 fi 28 fi
23 29
24 if [[ -n ${CHOST} ]] ; then 30 local search=
25 local search=$(type -p "${CHOST}-${prog}") 31 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
32 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
26 [[ -n ${search} ]] && prog=${search##*/} 33 [[ -n ${search} ]] && prog=${search##*/}
27 fi
28 34
29 export ${var}=${prog} 35 export ${var}=${prog}
30 echo "${!var}" 36 echo "${!var}"
31} 37}
32 38
33# Returns the name of the archiver 39# @FUNCTION: tc-getAR
40# @USAGE: [toolchain prefix]
41# @RETURN: name of the archiver
34tc-getAR() { tc-getPROG AR ar; } 42tc-getAR() { tc-getPROG AR ar "$@"; }
35# Returns the name of the assembler 43# @FUNCTION: tc-getAS
44# @USAGE: [toolchain prefix]
45# @RETURN: name of the assembler
36tc-getAS() { tc-getPROG AS as; } 46tc-getAS() { tc-getPROG AS as "$@"; }
47# @FUNCTION: tc-getCC
48# @USAGE: [toolchain prefix]
37# Returns the name of the C compiler 49# @RETURN: name of the C compiler
38tc-getCC() { tc-getPROG CC gcc; } 50tc-getCC() { tc-getPROG CC gcc "$@"; }
51# @FUNCTION: tc-getCPP
52# @USAGE: [toolchain prefix]
53# @RETURN: name of the C preprocessor
54tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55# @FUNCTION: tc-getCXX
56# @USAGE: [toolchain prefix]
39# Returns the name of the C++ compiler 57# @RETURN: name of the C++ compiler
40tc-getCXX() { tc-getPROG CXX g++; } 58tc-getCXX() { tc-getPROG CXX g++ "$@"; }
41# Returns the name of the linker 59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
42tc-getLD() { tc-getPROG LD ld; } 62tc-getLD() { tc-getPROG LD ld "$@"; }
63# @FUNCTION: tc-getSTRIP
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the strip program
66tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67# @FUNCTION: tc-getNM
68# @USAGE: [toolchain prefix]
43# Returns the name of the symbol/object thingy 69# @RETURN: name of the symbol/object thingy
44tc-getNM() { tc-getPROG NM nm; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
45# Returns the name of the archiver indexer 73# @RETURN: name of the archiver indexer
46tc-getRANLIB() { tc-getPROG RANLIB ranlib; } 74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
47# Returns the name of the fortran compiler 75# @FUNCTION: tc-getOBJCOPY
76# @USAGE: [toolchain prefix]
77# @RETURN: name of the object copier
78tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
79# @FUNCTION: tc-getF77
80# @USAGE: [toolchain prefix]
81# @RETURN: name of the Fortran 77 compiler
48tc-getF77() { tc-getPROG F77 f77; } 82tc-getF77() { tc-getPROG F77 f77 "$@"; }
83# @FUNCTION: tc-getFC
84# @USAGE: [toolchain prefix]
85# @RETURN: name of the Fortran 90 compiler
86tc-getFC() { tc-getPROG FC gfortran "$@"; }
87# @FUNCTION: tc-getGCJ
88# @USAGE: [toolchain prefix]
49# Returns the name of the java compiler 89# @RETURN: name of the java compiler
50tc-getGCJ() { tc-getPROG GCJ gcj; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
51 91
52# 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
53tc-getBUILD_CC() { 95tc-getBUILD_CC() {
96 local v
97 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
54 if [[ -n ${CC_FOR_BUILD} ]] ; then 98 if [[ -n ${!v} ]] ; then
55 export BUILD_CC=${CC_FOR_BUILD} 99 export BUILD_CC=${!v}
56 echo "${CC_FOR_BUILD}" 100 echo "${!v}"
57 return 0 101 return 0
58 fi 102 fi
103 done
59 104
60 local search= 105 local search=
61 if [[ -n ${CBUILD} ]] ; then 106 if [[ -n ${CBUILD} ]] ; then
62 search=$(type -p ${CBUILD}-gcc) 107 search=$(type -p ${CBUILD}-gcc)
63 search=${search##*/} 108 search=${search##*/}
64 else
65 search=gcc
66 fi 109 fi
110 search=${search:-gcc}
67 111
68 export BUILD_CC=${search} 112 export BUILD_CC=${search}
69 echo "${search}" 113 echo "${search}"
70} 114}
71 115
116# @FUNCTION: tc-export
117# @USAGE: <list of toolchain variables>
118# @DESCRIPTION:
72# Quick way to export a bunch of vars at once 119# Quick way to export a bunch of compiler vars at once.
73tc-export() { 120tc-export() {
74 local var 121 local var
75 for var in "$@" ; do 122 for var in "$@" ; do
123 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
76 eval tc-get${var} 124 eval tc-get${var} > /dev/null
77 done 125 done
78} 126}
79 127
80# 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
81tc-is-cross-compiler() { 130tc-is-cross-compiler() {
82 if [[ -n ${CBUILD} ]] ; then
83 return $([[ ${CBUILD} != ${CHOST} ]]) 131 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
84 fi
85 return 1
86} 132}
87 133
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 [[ ${CTARGET//_/-} == *-softfloat-* ]] \
152 && echo "yes" \
153 || echo "no"
154 ;;
155 esac
156}
88 157
158# @FUNCTION: tc-is-static-only
159# @DESCRIPTION:
160# Return shell true if the target does not support shared libs, shell false
161# otherwise.
162tc-is-static-only() {
163 local host=${CTARGET:-${CHOST}}
164
165 # *MiNT doesn't have shared libraries, only platform so far
166 return $([[ ${host} == *-mint* ]])
167}
168
169
89# Parse information from CBUILD/CHOST/CTARGET rather than 170# Parse information from CBUILD/CHOST/CTARGET rather than
90# use external variables from the profile. 171# use external variables from the profile.
91tc-ninja_magic_to_arch() { 172tc-ninja_magic_to_arch() {
92ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 173ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
93 174
94 local type=$1 175 local type=$1
95 local host=$2 176 local host=$2
96 [[ -z ${host} ]] && arg=${CHOST} 177 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
97 178
98 case ${host} in 179 case ${host} in
99 alpha*) echo alpha;; 180 alpha*) echo alpha;;
100 x86_64*) ninj x86_64 amd64;;
101 arm*) echo arm;; 181 arm*) echo arm;;
182 avr*) ninj avr32 avr;;
183 bfin*) ninj blackfin bfin;;
184 cris*) echo cris;;
102 hppa*) ninj parisc hppa;; 185 hppa*) ninj parisc hppa;;
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 ;;
103 ia64*) echo ia64;; 196 ia64*) echo ia64;;
104 m68*) echo m68k;; 197 m68*) echo m68k;;
105 mips*) echo mips;; 198 mips*) echo mips;;
106 powerpc64*) echo ppc64;; 199 nios2*) echo nios2;;
107 powerpc*) echo ppc;; 200 nios*) echo nios;;
108 sparc64*) ninj sparc64 sparc;; 201 powerpc*)
109 sparc*) echo sparc;; 202 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
203 # have been unified into simply 'powerpc', but until 2.6.16,
204 # ppc32 is still using ARCH="ppc" as default
205 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
206 echo powerpc
207 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
208 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
209 echo powerpc
210 else
211 echo ppc
212 fi
213 elif [[ ${host} == powerpc64* ]] ; then
214 echo ppc64
215 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
216 ninj ppc64 ppc
217 else
218 echo ppc
219 fi
220 ;;
110 s390*) echo s390;; 221 s390*) echo s390;;
111 sh64*) ninj sh64 sh;; 222 sh64*) ninj sh64 sh;;
112 sh*) echo sh;; 223 sh*) echo sh;;
113 i?86*) ninj i386 x86;; 224 sparc64*) ninj sparc64 sparc;;
225 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
226 && ninj sparc64 sparc \
227 || echo sparc
228 ;;
229 vax*) echo vax;;
230 x86_64*)
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 ${CTARGET}, let's filter
242 # other cross targets (mingw and such) into the unknown.
243 *) echo unknown;;
244 esac
245}
246# @FUNCTION: tc-arch-kernel
247# @USAGE: [toolchain prefix]
248# @RETURN: name of the kernel arch according to the compiler target
249tc-arch-kernel() {
250 tc-ninja_magic_to_arch kern "$@"
251}
252# @FUNCTION: tc-arch
253# @USAGE: [toolchain prefix]
254# @RETURN: name of the portage arch according to the compiler target
255tc-arch() {
256 tc-ninja_magic_to_arch portage "$@"
257}
258
259tc-endian() {
260 local host=$1
261 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
262 host=${host%%-*}
263
264 case ${host} in
265 alpha*) echo big;;
266 arm*b*) echo big;;
267 arm*) echo little;;
268 cris*) echo little;;
269 hppa*) echo big;;
270 i?86*) echo little;;
271 ia64*) echo little;;
272 m68*) echo big;;
273 mips*l*) echo little;;
274 mips*) echo big;;
275 powerpc*) echo big;;
276 s390*) echo big;;
277 sh*b*) echo big;;
278 sh*) echo little;;
279 sparc*) echo big;;
280 x86_64*) echo little;;
114 *) echo wtf;; 281 *) echo wtf;;
115 esac 282 esac
116} 283}
117tc-arch-kernel() {
118 tc-ninja_magic_to_arch kern $@
119}
120tc-arch() {
121 tc-ninja_magic_to_arch portage $@
122}
123tc-endian() {
124 local host=$1
125 [[ -z ${host} ]] && host=${CHOST}
126 284
127 case ${host} in 285# @FUNCTION: gcc-fullversion
128 alpha*) echo big;; 286# @RETURN: compiler version (major.minor.micro: [3.4.6])
129 x86_64*) echo little;;
130 arm*eb-*) echo big;;
131 arm*) echo little;;
132 hppa*) echo big;;
133 ia64*) echo little;;
134 m68*) echo big;;
135 mips*el-*) echo little;;
136 mips*) echo big;;
137 powerpc*) echo big;;
138 sparc*) echo big;;
139 s390*) echo big;;
140 sh*el-) echo little;;
141 sh*) echo big;;
142 i?86*) echo little;;
143 *) echo wtf;;
144 esac
145}
146
147# Returns the version as by `$CC -dumpversion`
148gcc-fullversion() { 287gcc-fullversion() {
149 echo "$($(tc-getCC) -dumpversion)" 288 $(tc-getCC "$@") -dumpversion
150} 289}
151# Returns the version, but only the <major>.<minor> 290# @FUNCTION: gcc-version
291# @RETURN: compiler version (major.minor: [3.4].6)
152gcc-version() { 292gcc-version() {
153 echo "$(gcc-fullversion | cut -f1,2 -d.)" 293 gcc-fullversion "$@" | cut -f1,2 -d.
154} 294}
155# Returns the Major version 295# @FUNCTION: gcc-major-version
296# @RETURN: major compiler version (major: [3].4.6)
156gcc-major-version() { 297gcc-major-version() {
157 echo "$(gcc-version | cut -f1 -d.)" 298 gcc-version "$@" | cut -f1 -d.
158} 299}
159# Returns the Minor version 300# @FUNCTION: gcc-minor-version
301# @RETURN: minor compiler version (minor: 3.[4].6)
160gcc-minor-version() { 302gcc-minor-version() {
161 echo "$(gcc-version | cut -f2 -d.)" 303 gcc-version "$@" | cut -f2 -d.
162} 304}
163# Returns the Micro version 305# @FUNCTION: gcc-micro-version
306# @RETURN: micro compiler version (micro: 3.4.[6])
164gcc-micro-version() { 307gcc-micro-version() {
165 echo "$(gcc-fullversion | cut -f3 -d.)" 308 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
166} 309}
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
323# Returns requested gcc specs directive unprocessed - for used by
324# gcc-specs-directive()
325# Note; later specs normally overwrite earlier ones; however if a later
326# spec starts with '+' then it appends.
327# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
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 $(gcc_install_dir)/specs so the result is the
332# same either way.
333_gcc-specs-directive_raw() {
334 local cc=$(tc-getCC)
335 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
336 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
337'BEGIN { pspec=""; spec=""; outside=1 }
338$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
339 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
340 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
341 { spec=spec $0 }
342END { print spec }'
343 return 0
344}
345
346# Return the requested gcc specs directive, with all included
347# specs expanded.
348# Note, it does not check for inclusion loops, which cause it
349# to never finish - but such loops are invalid for gcc and we're
350# assuming gcc is operational.
351gcc-specs-directive() {
352 local directive subdname subdirective
353 directive="$(_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 "${directive}"
361 return 0
362}
363
364# Returns true if gcc sets relro
365gcc-specs-relro() {
366 local directive
367 directive=$(gcc-specs-directive link_command)
368 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
369}
370# Returns true if gcc sets now
371gcc-specs-now() {
372 local directive
373 directive=$(gcc-specs-directive link_command)
374 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
375}
376# Returns true if gcc builds PIEs
377gcc-specs-pie() {
378 local directive
379 directive=$(gcc-specs-directive cc1)
380 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
381}
382# Returns true if gcc builds with the stack protector
383gcc-specs-ssp() {
384 local directive
385 directive=$(gcc-specs-directive cc1)
386 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
387}
388# Returns true if gcc upgrades fstack-protector to fstack-protector-all
389gcc-specs-ssp-to-all() {
390 local directive
391 directive=$(gcc-specs-directive cc1)
392 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
393}
394# Returns true if gcc builds with fno-strict-overflow
395gcc-specs-nostrict() {
396 local directive
397 directive=$(gcc-specs-directive cc1)
398 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
399}
400
401
402# @FUNCTION: gen_usr_ldscript
403# @USAGE: [-a] <list of libs to create linker scripts for>
404# @DESCRIPTION:
405# This function generate linker scripts in /usr/lib for dynamic
406# libs in /lib. This is to fix linking problems when you have
407# the .so in /lib, and the .a in /usr/lib. What happens is that
408# in some cases when linking dynamic, the .a in /usr/lib is used
409# instead of the .so in /lib due to gcc/libtool tweaking ld's
410# library search path. This causes many builds to fail.
411# See bug #4411 for more info.
412#
413# Note that you should in general use the unversioned name of
414# the library (libfoo.so), as ldconfig should usually update it
415# correctly to point to the latest version of the library present.
416gen_usr_ldscript() {
417 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
418 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
419
420 tc-is-static-only && return
421
422 # Just make sure it exists
423 dodir /usr/${libdir}
424
425 if [[ $1 == "-a" ]] ; then
426 auto=true
427 shift
428 dodir /${libdir}
429 fi
430
431 # OUTPUT_FORMAT gives hints to the linker as to what binary format
432 # is referenced ... makes multilib saner
433 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
434 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
435
436 for lib in "$@" ; do
437 local tlib
438 if ${auto} ; then
439 lib="lib${lib}${suffix}"
440 else
441 # Ensure /lib/${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
526 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
527 /* GNU ld script
528 Since Gentoo has critical dynamic libraries in /lib, and the static versions
529 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
530 run into linking problems. This "fake" dynamic lib is a linker script that
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.
533
534 See bug http://bugs.gentoo.org/4411 for more info.
535 */
536 ${output_format}
537 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
538 END_LDSCRIPT
539 ;;
540 esac
541 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
542 done
543}

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