/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2005 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 1.49 2006/01/04 04:59:54 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.96 2009/11/27 21:31:29 vapier 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]
53# @RETURN: name of the C preprocessor
54tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55# @FUNCTION: tc-getCXX
56# @USAGE: [toolchain prefix]
38# Returns the name of the C++ compiler 57# @RETURN: name of the C++ compiler
39tc-getCXX() { tc-getPROG CXX g++ "$@"; } 58tc-getCXX() { tc-getPROG CXX g++ "$@"; }
40# Returns the name of the linker 59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
41tc-getLD() { tc-getPROG LD ld "$@"; } 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]
42# Returns the name of the symbol/object thingy 69# @RETURN: name of the symbol/object thingy
43tc-getNM() { tc-getPROG NM nm "$@"; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
44# Returns the name of the archiver indexer 73# @RETURN: name of the archiver indexer
45tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } 74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
46# 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 "$@"; }
79# @FUNCTION: tc-getF77
80# @USAGE: [toolchain prefix]
81# @RETURN: name of the Fortran 77 compiler
47tc-getF77() { tc-getPROG F77 f77 "$@"; } 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]
48# Returns the name of the java compiler 89# @RETURN: name of the java compiler
49tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
91# @FUNCTION: tc-getPKG_CONFIG
92# @USAGE: [toolchain prefix]
93# @RETURN: name of the pkg-config tool
94tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
50 95
51# Returns the name of the C compiler for build 96# @FUNCTION: tc-getBUILD_CC
97# @USAGE: [toolchain prefix]
98# @RETURN: name of the C compiler for building binaries to run on the build machine
52tc-getBUILD_CC() { 99tc-getBUILD_CC() {
53 local v 100 local v
54 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do 101 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
55 if [[ -n ${!v} ]] ; then 102 if [[ -n ${!v} ]] ; then
56 export BUILD_CC=${!v} 103 export BUILD_CC=${!v}
68 115
69 export BUILD_CC=${search} 116 export BUILD_CC=${search}
70 echo "${search}" 117 echo "${search}"
71} 118}
72 119
120# @FUNCTION: tc-export
121# @USAGE: <list of toolchain variables>
122# @DESCRIPTION:
73# Quick way to export a bunch of vars at once 123# Quick way to export a bunch of compiler vars at once.
74tc-export() { 124tc-export() {
75 local var 125 local var
76 for var in "$@" ; do 126 for var in "$@" ; do
127 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
77 eval tc-get${var} > /dev/null 128 eval tc-get${var} > /dev/null
78 done 129 done
79} 130}
80 131
81# A simple way to see if we're using a cross-compiler ... 132# @FUNCTION: tc-is-cross-compiler
133# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
82tc-is-cross-compiler() { 134tc-is-cross-compiler() {
83 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 135 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
136}
137
138# @FUNCTION: tc-is-softfloat
139# @DESCRIPTION:
140# See if this toolchain is a softfloat based one.
141# @CODE
142# The possible return values:
143# - only: the target is always softfloat (never had fpu)
144# - yes: the target should support softfloat
145# - no: the target should support hardfloat
146# @CODE
147# This allows us to react differently where packages accept
148# softfloat flags in the case where support is optional, but
149# rejects softfloat flags where the target always lacks an fpu.
150tc-is-softfloat() {
151 case ${CTARGET} in
152 bfin*|h8300*)
153 echo "only" ;;
154 *)
155 [[ ${CTARGET//_/-} == *-softfloat-* ]] \
156 && echo "yes" \
157 || echo "no"
158 ;;
159 esac
160}
161
162# @FUNCTION: tc-is-static-only
163# @DESCRIPTION:
164# Return shell true if the target does not support shared libs, shell false
165# otherwise.
166tc-is-static-only() {
167 local host=${CTARGET:-${CHOST}}
168
169 # *MiNT doesn't have shared libraries, only platform so far
170 return $([[ ${host} == *-mint* ]])
84} 171}
85 172
86 173
87# Parse information from CBUILD/CHOST/CTARGET rather than 174# Parse information from CBUILD/CHOST/CTARGET rather than
88# use external variables from the profile. 175# use external variables from the profile.
94 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 181 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
95 182
96 case ${host} in 183 case ${host} in
97 alpha*) echo alpha;; 184 alpha*) echo alpha;;
98 arm*) echo arm;; 185 arm*) echo arm;;
186 avr*) ninj avr32 avr;;
187 bfin*) ninj blackfin bfin;;
99 cris*) echo cris;; 188 cris*) echo cris;;
100 hppa*) ninj parisc hppa;; 189 hppa*) ninj parisc hppa;;
101 i?86*) ninj i386 x86;; 190 i?86*)
191 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
192 # trees have been unified into 'x86'.
193 # FreeBSD still uses i386
194 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
195 echo i386
196 else
197 echo x86
198 fi
199 ;;
102 ia64*) echo ia64;; 200 ia64*) echo ia64;;
103 m68*) echo m68k;; 201 m68*) echo m68k;;
104 mips*) echo mips;; 202 mips*) echo mips;;
105 powerpc64*) echo ppc64;; 203 nios2*) echo nios2;;
204 nios*) echo nios;;
106 powerpc*) 205 powerpc*)
107 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees 206 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
108 # have been unified into simply 'powerpc' 207 # have been unified into simply 'powerpc', but until 2.6.16,
208 # ppc32 is still using ARCH="ppc" as default
109 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.15) ]] ; then 209 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
110 echo powerpc 210 echo powerpc
211 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
212 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
213 echo powerpc
214 else
215 echo ppc
216 fi
111 elif [[ ${host} == powerpc64* ]] ; then 217 elif [[ ${host} == powerpc64* ]] ; then
112 echo ppc64 218 echo ppc64
219 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
220 ninj ppc64 ppc
113 else 221 else
114 echo ppc 222 echo ppc
115 fi 223 fi
116 ;; 224 ;;
117 s390*) echo s390;; 225 s390*) echo s390;;
121 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 229 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
122 && ninj sparc64 sparc \ 230 && ninj sparc64 sparc \
123 || echo sparc 231 || echo sparc
124 ;; 232 ;;
125 vax*) echo vax;; 233 vax*) echo vax;;
126 x86_64*) ninj x86_64 amd64;; 234 x86_64*)
127 *) echo ${ARCH};; 235 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
236 # trees have been unified into 'x86'.
237 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
238 echo x86
239 else
240 ninj x86_64 amd64
241 fi
242 ;;
243
244 # since our usage of tc-arch is largely concerned with
245 # normalizing inputs for testing ${CTARGET}, let's filter
246 # other cross targets (mingw and such) into the unknown.
247 *) echo unknown;;
128 esac 248 esac
129} 249}
250# @FUNCTION: tc-arch-kernel
251# @USAGE: [toolchain prefix]
252# @RETURN: name of the kernel arch according to the compiler target
130tc-arch-kernel() { 253tc-arch-kernel() {
131 tc-ninja_magic_to_arch kern $@ 254 tc-ninja_magic_to_arch kern "$@"
132} 255}
256# @FUNCTION: tc-arch
257# @USAGE: [toolchain prefix]
258# @RETURN: name of the portage arch according to the compiler target
133tc-arch() { 259tc-arch() {
134 tc-ninja_magic_to_arch portage $@ 260 tc-ninja_magic_to_arch portage "$@"
135} 261}
262
136tc-endian() { 263tc-endian() {
137 local host=$1 264 local host=$1
138 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 265 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
139 host=${host%%-*} 266 host=${host%%-*}
140 267
157 x86_64*) echo little;; 284 x86_64*) echo little;;
158 *) echo wtf;; 285 *) echo wtf;;
159 esac 286 esac
160} 287}
161 288
162# Returns the version as by `$CC -dumpversion` 289# @FUNCTION: gcc-fullversion
290# @RETURN: compiler version (major.minor.micro: [3.4.6])
163gcc-fullversion() { 291gcc-fullversion() {
164 echo "$($(tc-getCC) -dumpversion)" 292 $(tc-getCC "$@") -dumpversion
165} 293}
166# Returns the version, but only the <major>.<minor> 294# @FUNCTION: gcc-version
295# @RETURN: compiler version (major.minor: [3.4].6)
167gcc-version() { 296gcc-version() {
168 echo "$(gcc-fullversion | cut -f1,2 -d.)" 297 gcc-fullversion "$@" | cut -f1,2 -d.
169} 298}
170# Returns the Major version 299# @FUNCTION: gcc-major-version
300# @RETURN: major compiler version (major: [3].4.6)
171gcc-major-version() { 301gcc-major-version() {
172 echo "$(gcc-version | cut -f1 -d.)" 302 gcc-version "$@" | cut -f1 -d.
173} 303}
174# Returns the Minor version 304# @FUNCTION: gcc-minor-version
305# @RETURN: minor compiler version (minor: 3.[4].6)
175gcc-minor-version() { 306gcc-minor-version() {
176 echo "$(gcc-version | cut -f2 -d.)" 307 gcc-version "$@" | cut -f2 -d.
177} 308}
178# Returns the Micro version 309# @FUNCTION: gcc-micro-version
310# @RETURN: micro compiler version (micro: 3.4.[6])
179gcc-micro-version() { 311gcc-micro-version() {
180 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 312 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
181} 313}
182 314
315# Returns the installation directory - internal toolchain
316# function for use by _gcc-specs-exists (for flag-o-matic).
317_gcc-install-dir() {
318 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
319 awk '$1=="install:" {print $2}')"
320}
321# Returns true if the indicated specs file exists - internal toolchain
322# function for use by flag-o-matic.
323_gcc-specs-exists() {
324 [[ -f $(_gcc-install-dir)/$1 ]]
325}
326
183# Returns requested gcc specs directive 327# Returns requested gcc specs directive unprocessed - for used by
328# gcc-specs-directive()
184# Note; later specs normally overwrite earlier ones; however if a later 329# Note; later specs normally overwrite earlier ones; however if a later
185# spec starts with '+' then it appends. 330# spec starts with '+' then it appends.
186# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" 331# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
187# as "Reading <file>", in order. 332# as "Reading <file>", in order. Strictly speaking, if there's a
333# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
334# the same token anything from 'gcc -dumpspecs' is overridden by
335# the contents of $(gcc_install_dir)/specs so the result is the
336# same either way.
188gcc-specs-directive() { 337_gcc-specs-directive_raw() {
338 local cc=$(tc-getCC)
189 local specfiles=$($(tc-getCC) -v 2>&1 | awk '$1=="Reading" {print $NF}') 339 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
190 $(tc-getCC) -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ 340 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
191'BEGIN { pspec=""; spec=""; outside=1 } 341'BEGIN { pspec=""; spec=""; outside=1 }
192$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 342$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
193 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next } 343 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
194 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next } 344 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
195 { spec=spec $0 } 345 { spec=spec $0 }
196END { print spec }' 346END { print spec }'
197 return 0 347 return 0
198} 348}
199 349
350# Return the requested gcc specs directive, with all included
351# specs expanded.
352# Note, it does not check for inclusion loops, which cause it
353# to never finish - but such loops are invalid for gcc and we're
354# assuming gcc is operational.
355gcc-specs-directive() {
356 local directive subdname subdirective
357 directive="$(_gcc-specs-directive_raw $1)"
358 while [[ ${directive} == *%\(*\)* ]]; do
359 subdname=${directive/*%\(}
360 subdname=${subdname/\)*}
361 subdirective="$(_gcc-specs-directive_raw ${subdname})"
362 directive="${directive//\%(${subdname})/${subdirective}}"
363 done
364 echo "${directive}"
365 return 0
366}
367
200# Returns true if gcc sets relro 368# Returns true if gcc sets relro
201gcc-specs-relro() { 369gcc-specs-relro() {
202 local directive 370 local directive
203 directive=$(gcc-specs-directive link_command) 371 directive=$(gcc-specs-directive link_command)
204 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 372 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
205} 373}
206# Returns true if gcc sets now 374# Returns true if gcc sets now
207gcc-specs-now() { 375gcc-specs-now() {
208 local directive 376 local directive
209 directive=$(gcc-specs-directive link_command) 377 directive=$(gcc-specs-directive link_command)
210 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 378 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
211} 379}
212# Returns true if gcc builds PIEs 380# Returns true if gcc builds PIEs
213gcc-specs-pie() { 381gcc-specs-pie() {
214 local directive 382 local directive
215 directive=$(gcc-specs-directive cc1) 383 directive=$(gcc-specs-directive cc1)
216 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 384 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
217} 385}
218# Returns true if gcc builds with the stack protector 386# Returns true if gcc builds with the stack protector
219gcc-specs-ssp() { 387gcc-specs-ssp() {
220 local directive 388 local directive
221 directive=$(gcc-specs-directive cc1) 389 directive=$(gcc-specs-directive cc1)
222 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 390 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
223} 391}
224# Returns true if gcc upgrades fstack-protector to fstack-protector-all 392# Returns true if gcc upgrades fstack-protector to fstack-protector-all
225gcc-specs-ssp-to-all() { 393gcc-specs-ssp-to-all() {
226 local directive 394 local directive
227 directive=$(gcc-specs-directive cc1) 395 directive=$(gcc-specs-directive cc1)
228 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 396 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
229} 397}
398# Returns true if gcc builds with fno-strict-overflow
399gcc-specs-nostrict() {
400 local directive
401 directive=$(gcc-specs-directive cc1)
402 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
403}
404
405
406# @FUNCTION: gen_usr_ldscript
407# @USAGE: [-a] <list of libs to create linker scripts for>
408# @DESCRIPTION:
409# This function generate linker scripts in /usr/lib for dynamic
410# libs in /lib. This is to fix linking problems when you have
411# the .so in /lib, and the .a in /usr/lib. What happens is that
412# in some cases when linking dynamic, the .a in /usr/lib is used
413# instead of the .so in /lib due to gcc/libtool tweaking ld's
414# library search path. This causes many builds to fail.
415# See bug #4411 for more info.
416#
417# Note that you should in general use the unversioned name of
418# the library (libfoo.so), as ldconfig should usually update it
419# correctly to point to the latest version of the library present.
420gen_usr_ldscript() {
421 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
422 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
423
424 tc-is-static-only && return
425
426 # Just make sure it exists
427 dodir /usr/${libdir}
428
429 if [[ $1 == "-a" ]] ; then
430 auto=true
431 shift
432 dodir /${libdir}
433 fi
434
435 # OUTPUT_FORMAT gives hints to the linker as to what binary format
436 # is referenced ... makes multilib saner
437 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
438 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
439
440 for lib in "$@" ; do
441 local tlib
442 if ${auto} ; then
443 lib="lib${lib}${suffix}"
444 else
445 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
446 # This especially is for AIX where $(get_libname) can return ".a",
447 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
448 [[ -r ${ED}/${libdir}/${lib} ]] || continue
449 #TODO: better die here?
450 fi
451
452 case ${CTARGET:-${CHOST}} in
453 *-darwin*)
454 if ${auto} ; then
455 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
456 else
457 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
458 fi
459 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
460 tlib=${tlib##*/}
461
462 if ${auto} ; then
463 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
464 # some install_names are funky: they encode a version
465 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
466 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
467 fi
468 rm -f "${ED}"/${libdir}/${lib}
469 fi
470
471 # Mach-O files have an id, which is like a soname, it tells how
472 # another object linking against this lib should reference it.
473 # Since we moved the lib from usr/lib into lib this reference is
474 # wrong. Hence, we update it here. We don't configure with
475 # libdir=/lib because that messes up libtool files.
476 # Make sure we don't lose the specific version, so just modify the
477 # existing install_name
478 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
479 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
480 local nowrite=yes
481 fi
482 install_name_tool \
483 -id "${EPREFIX}"/${libdir}/${tlib} \
484 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
485 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
486 # Now as we don't use GNU binutils and our linker doesn't
487 # understand linker scripts, just create a symlink.
488 pushd "${ED}/usr/${libdir}" > /dev/null
489 ln -snf "../../${libdir}/${tlib}" "${lib}"
490 popd > /dev/null
491 ;;
492 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
493 if ${auto} ; then
494 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
495 # no way to retrieve soname on these platforms (?)
496 tlib=$(readlink "${ED}"/${libdir}/${lib})
497 tlib=${tlib##*/}
498 if [[ -z ${tlib} ]] ; then
499 # ok, apparently was not a symlink, don't remove it and
500 # just link to it
501 tlib=${lib}
502 else
503 rm -f "${ED}"/${libdir}/${lib}
504 fi
505 else
506 tlib=${lib}
507 fi
508
509 # we don't have GNU binutils on these platforms, so we symlink
510 # instead, which seems to work fine. Keep it relative, otherwise
511 # we break some QA checks in Portage
512 # on interix, the linker scripts would work fine in _most_
513 # situations. if a library links to such a linker script the
514 # absolute path to the correct library is inserted into the binary,
515 # which is wrong, since anybody linking _without_ libtool will miss
516 # some dependencies, since the stupid linker cannot find libraries
517 # hardcoded with absolute paths (as opposed to the loader, which
518 # seems to be able to do this).
519 # this has been seen while building shared-mime-info which needs
520 # libxml2, but links without libtool (and does not add libz to the
521 # command line by itself).
522 pushd "${ED}/usr/${libdir}" > /dev/null
523 ln -snf "../../${libdir}/${tlib}" "${lib}"
524 popd > /dev/null
525 ;;
526 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
527 if ${auto} ; then
528 tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
529 [[ -z ${tlib} ]] && tlib=${lib}
530 tlib=${tlib##*/} # 'internal name' can have a path component
531 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
532 # some SONAMEs are funky: they encode a version before the .so
533 if [[ ${tlib} != ${lib}* ]] ; then
534 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
535 fi
536 [[ ${tlib} != ${lib} ]] &&
537 rm -f "${ED}"/${libdir}/${lib}
538 else
539 tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
540 [[ -z ${tlib} ]] && tlib=${lib}
541 tlib=${tlib##*/} # 'internal name' can have a path component
542 fi
543 pushd "${ED}"/usr/${libdir} >/dev/null
544 ln -snf "../../${libdir}/${tlib}" "${lib}"
545 # need the internal name in usr/lib too, to be available at runtime
546 # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
547 [[ ${tlib} != ${lib} ]] &&
548 ln -snf "../../${libdir}/${tlib}" "${tlib}"
549 popd >/dev/null
550 ;;
551 *)
552 if ${auto} ; then
553 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
554 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
555 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
556 # some SONAMEs are funky: they encode a version before the .so
557 if [[ ${tlib} != ${lib}* ]] ; then
558 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
559 fi
560 rm -f "${ED}"/${libdir}/${lib}
561 else
562 tlib=${lib}
563 fi
564 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
565 /* GNU ld script
566 Since Gentoo has critical dynamic libraries in /lib, and the static versions
567 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
568 run into linking problems. This "fake" dynamic lib is a linker script that
569 redirects the linker to the real lib. And yes, this works in the cross-
570 compiling scenario as the sysroot-ed linker will prepend the real path.
571
572 See bug http://bugs.gentoo.org/4411 for more info.
573 */
574 ${output_format}
575 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
576 END_LDSCRIPT
577 ;;
578 esac
579 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
580 done
581}

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