/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2007 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 1.71 2007/07/11 04:06:29 robbat2 Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.97 2009/12/01 04:44:17 vapier Exp $
4# 4
5# @ECLASS: toolchain-funcs.eclass
6# @MAINTAINER:
5# Maintainer: 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
10___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes" 16___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib 17[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
12 18
13DESCRIPTION="Based on the ${ECLASS} eclass" 19DESCRIPTION="Based on the ${ECLASS} eclass"
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]
39# Returns the name of the C preprocessor 53# @RETURN: name of the C preprocessor
40tc-getCPP() { tc-getPROG CPP cpp "$@"; } 54tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55# @FUNCTION: tc-getCXX
56# @USAGE: [toolchain prefix]
41# Returns the name of the C++ compiler 57# @RETURN: name of the C++ compiler
42tc-getCXX() { tc-getPROG CXX g++ "$@"; } 58tc-getCXX() { tc-getPROG CXX g++ "$@"; }
43# Returns the name of the linker 59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
44tc-getLD() { tc-getPROG LD ld "$@"; } 62tc-getLD() { tc-getPROG LD ld "$@"; }
45# Returns the name of the strip prog 63# @FUNCTION: tc-getSTRIP
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the strip program
46tc-getSTRIP() { tc-getPROG STRIP strip "$@"; } 66tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67# @FUNCTION: tc-getNM
68# @USAGE: [toolchain prefix]
47# Returns the name of the symbol/object thingy 69# @RETURN: name of the symbol/object thingy
48tc-getNM() { tc-getPROG NM nm "$@"; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
49# Returns the name of the archiver indexer 73# @RETURN: name of the archiver indexer
50tc-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 "$@"; }
79# @FUNCTION: tc-getF77
80# @USAGE: [toolchain prefix]
51# Returns the name of the fortran 77 compiler 81# @RETURN: name of the Fortran 77 compiler
52tc-getF77() { tc-getPROG F77 f77 "$@"; } 82tc-getF77() { tc-getPROG F77 f77 "$@"; }
83# @FUNCTION: tc-getFC
84# @USAGE: [toolchain prefix]
53# Returns the name of the fortran 90 compiler 85# @RETURN: name of the Fortran 90 compiler
54tc-getF90() { tc-getPROG F90 gfortran "$@"; } 86tc-getFC() { tc-getPROG FC gfortran "$@"; }
55# Returns the name of the fortran compiler 87# @FUNCTION: tc-getGCJ
56tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; } 88# @USAGE: [toolchain prefix]
57# Returns the name of the java compiler 89# @RETURN: name of the java compiler
58tc-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 "$@"; }
59 95
60# 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
61tc-getBUILD_CC() { 99tc-getBUILD_CC() {
62 local v 100 local v
63 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do 101 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
64 if [[ -n ${!v} ]] ; then 102 if [[ -n ${!v} ]] ; then
65 export BUILD_CC=${!v} 103 export BUILD_CC=${!v}
77 115
78 export BUILD_CC=${search} 116 export BUILD_CC=${search}
79 echo "${search}" 117 echo "${search}"
80} 118}
81 119
120# @FUNCTION: tc-export
121# @USAGE: <list of toolchain variables>
122# @DESCRIPTION:
82# Quick way to export a bunch of vars at once 123# Quick way to export a bunch of compiler vars at once.
83tc-export() { 124tc-export() {
84 local var 125 local var
85 for var in "$@" ; do 126 for var in "$@" ; do
127 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
86 eval tc-get${var} > /dev/null 128 eval tc-get${var} > /dev/null
87 done 129 done
88} 130}
89 131
90# 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
91tc-is-cross-compiler() { 134tc-is-cross-compiler() {
92 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 135 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
93} 136}
94 137
138# @FUNCTION: tc-is-softfloat
139# @DESCRIPTION:
95# See if this toolchain is a softfloat based one. 140# See if this toolchain is a softfloat based one.
141# @CODE
96# The possible return values: 142# The possible return values:
97# - only: the target is always softfloat (never had fpu) 143# - only: the target is always softfloat (never had fpu)
98# - yes: the target should support softfloat 144# - yes: the target should support softfloat
99# - no: the target should support hardfloat 145# - no: the target should support hardfloat
146# @CODE
100# This allows us to react differently where packages accept 147# This allows us to react differently where packages accept
101# softfloat flags in the case where support is optional, but 148# softfloat flags in the case where support is optional, but
102# rejects softfloat flags where the target always lacks an fpu. 149# rejects softfloat flags where the target always lacks an fpu.
103tc-is-softfloat() { 150tc-is-softfloat() {
104 case ${CTARGET} in 151 case ${CTARGET} in
110 || echo "no" 157 || echo "no"
111 ;; 158 ;;
112 esac 159 esac
113} 160}
114 161
162# @FUNCTION: tc-is-static-only
163# @DESCRIPTION:
164# Return shell true if the target does not support shared libs, shell false
165# otherwise.
166tc-is-static-only() {
167 local host=${CTARGET:-${CHOST}}
168
169 # *MiNT doesn't have shared libraries, only platform so far
170 return $([[ ${host} == *-mint* ]])
171}
172
173# @FUNCTION: tc-has-tls
174# @USAGE: [-s|-c|-l] [toolchain prefix]
175# @DESCRIPTION:
176# See if the toolchain supports thread local storage (TLS). Use -s to test the
177# compiler, -c to also test the assembler, and -l to also test the C library
178# (the default).
179tc-has-tls() {
180 local base="${T}/test-tc-tls"
181 cat <<-EOF > "${base}.c"
182 int foo(int *i) {
183 static __thread int j = 0;
184 return *i ? j : *i;
185 }
186 EOF
187 local flags
188 case $1 in
189 -s) flags="-S";;
190 -c) flags="-c";;
191 -l) ;;
192 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
193 esac
194 : ${flags:=-fPIC -shared -Wl,-z,defs}
195 [[ $1 == -* ]] && shift
196 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
197 local ret=$?
198 rm -f "${base}"*
199 return ${ret}
200}
201
202
115# Parse information from CBUILD/CHOST/CTARGET rather than 203# Parse information from CBUILD/CHOST/CTARGET rather than
116# use external variables from the profile. 204# use external variables from the profile.
117tc-ninja_magic_to_arch() { 205tc-ninja_magic_to_arch() {
118ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 206ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
119 207
122 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 210 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
123 211
124 case ${host} in 212 case ${host} in
125 alpha*) echo alpha;; 213 alpha*) echo alpha;;
126 arm*) echo arm;; 214 arm*) echo arm;;
215 avr*) ninj avr32 avr;;
127 bfin*) ninj blackfin bfin;; 216 bfin*) ninj blackfin bfin;;
128 cris*) echo cris;; 217 cris*) echo cris;;
129 hppa*) ninj parisc hppa;; 218 hppa*) ninj parisc hppa;;
130 i?86*) ninj i386 x86;; 219 i?86*)
220 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
221 # trees have been unified into 'x86'.
222 # FreeBSD still uses i386
223 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
224 echo i386
225 else
226 echo x86
227 fi
228 ;;
131 ia64*) echo ia64;; 229 ia64*) echo ia64;;
132 m68*) echo m68k;; 230 m68*) echo m68k;;
133 mips*) echo mips;; 231 mips*) echo mips;;
134 nios2*) echo nios2;; 232 nios2*) echo nios2;;
135 nios*) echo nios;; 233 nios*) echo nios;;
160 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 258 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
161 && ninj sparc64 sparc \ 259 && ninj sparc64 sparc \
162 || echo sparc 260 || echo sparc
163 ;; 261 ;;
164 vax*) echo vax;; 262 vax*) echo vax;;
165 x86_64*) ninj x86_64 amd64;; 263 x86_64*)
166 *) echo ${ARCH};; 264 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
265 # trees have been unified into 'x86'.
266 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
267 echo x86
268 else
269 ninj x86_64 amd64
270 fi
271 ;;
272
273 # since our usage of tc-arch is largely concerned with
274 # normalizing inputs for testing ${CTARGET}, let's filter
275 # other cross targets (mingw and such) into the unknown.
276 *) echo unknown;;
167 esac 277 esac
168} 278}
279# @FUNCTION: tc-arch-kernel
280# @USAGE: [toolchain prefix]
281# @RETURN: name of the kernel arch according to the compiler target
169tc-arch-kernel() { 282tc-arch-kernel() {
170 tc-ninja_magic_to_arch kern $@ 283 tc-ninja_magic_to_arch kern "$@"
171} 284}
285# @FUNCTION: tc-arch
286# @USAGE: [toolchain prefix]
287# @RETURN: name of the portage arch according to the compiler target
172tc-arch() { 288tc-arch() {
173 tc-ninja_magic_to_arch portage $@ 289 tc-ninja_magic_to_arch portage "$@"
174} 290}
291
175tc-endian() { 292tc-endian() {
176 local host=$1 293 local host=$1
177 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 294 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
178 host=${host%%-*} 295 host=${host%%-*}
179 296
196 x86_64*) echo little;; 313 x86_64*) echo little;;
197 *) echo wtf;; 314 *) echo wtf;;
198 esac 315 esac
199} 316}
200 317
201# Returns the version as by `$CC -dumpversion` 318# @FUNCTION: gcc-fullversion
319# @RETURN: compiler version (major.minor.micro: [3.4.6])
202gcc-fullversion() { 320gcc-fullversion() {
203 $(tc-getCC "$@") -dumpversion 321 $(tc-getCC "$@") -dumpversion
204} 322}
205# Returns the version, but only the <major>.<minor> 323# @FUNCTION: gcc-version
324# @RETURN: compiler version (major.minor: [3.4].6)
206gcc-version() { 325gcc-version() {
207 gcc-fullversion "$@" | cut -f1,2 -d. 326 gcc-fullversion "$@" | cut -f1,2 -d.
208} 327}
209# Returns the Major version 328# @FUNCTION: gcc-major-version
329# @RETURN: major compiler version (major: [3].4.6)
210gcc-major-version() { 330gcc-major-version() {
211 gcc-version "$@" | cut -f1 -d. 331 gcc-version "$@" | cut -f1 -d.
212} 332}
213# Returns the Minor version 333# @FUNCTION: gcc-minor-version
334# @RETURN: minor compiler version (minor: 3.[4].6)
214gcc-minor-version() { 335gcc-minor-version() {
215 gcc-version "$@" | cut -f2 -d. 336 gcc-version "$@" | cut -f2 -d.
216} 337}
217# Returns the Micro version 338# @FUNCTION: gcc-micro-version
339# @RETURN: micro compiler version (micro: 3.4.[6])
218gcc-micro-version() { 340gcc-micro-version() {
219 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- 341 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
220} 342}
343
221# Returns the installation directory - internal toolchain 344# Returns the installation directory - internal toolchain
222# function for use by _gcc-specs-exists (for flag-o-matic). 345# function for use by _gcc-specs-exists (for flag-o-matic).
223_gcc-install-dir() { 346_gcc-install-dir() {
224 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\ 347 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
225 awk '$1=="install:" {print $2}')" 348 awk '$1=="install:" {print $2}')"
226} 349}
227# Returns true if the indicated specs file exists - internal toolchain 350# Returns true if the indicated specs file exists - internal toolchain
228# function for use by flag-o-matic. 351# function for use by flag-o-matic.
229_gcc-specs-exists() { 352_gcc-specs-exists() {
273 396
274# Returns true if gcc sets relro 397# Returns true if gcc sets relro
275gcc-specs-relro() { 398gcc-specs-relro() {
276 local directive 399 local directive
277 directive=$(gcc-specs-directive link_command) 400 directive=$(gcc-specs-directive link_command)
278 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 401 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
279} 402}
280# Returns true if gcc sets now 403# Returns true if gcc sets now
281gcc-specs-now() { 404gcc-specs-now() {
282 local directive 405 local directive
283 directive=$(gcc-specs-directive link_command) 406 directive=$(gcc-specs-directive link_command)
284 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 407 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
285} 408}
286# Returns true if gcc builds PIEs 409# Returns true if gcc builds PIEs
287gcc-specs-pie() { 410gcc-specs-pie() {
288 local directive 411 local directive
289 directive=$(gcc-specs-directive cc1) 412 directive=$(gcc-specs-directive cc1)
290 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 413 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
291} 414}
292# Returns true if gcc builds with the stack protector 415# Returns true if gcc builds with the stack protector
293gcc-specs-ssp() { 416gcc-specs-ssp() {
294 local directive 417 local directive
295 directive=$(gcc-specs-directive cc1) 418 directive=$(gcc-specs-directive cc1)
296 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 419 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
297} 420}
298# Returns true if gcc upgrades fstack-protector to fstack-protector-all 421# Returns true if gcc upgrades fstack-protector to fstack-protector-all
299gcc-specs-ssp-to-all() { 422gcc-specs-ssp-to-all() {
300 local directive 423 local directive
301 directive=$(gcc-specs-directive cc1) 424 directive=$(gcc-specs-directive cc1)
302 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 425 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
303} 426}
427# Returns true if gcc builds with fno-strict-overflow
428gcc-specs-nostrict() {
429 local directive
430 directive=$(gcc-specs-directive cc1)
431 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
432}
304 433
305 434
435# @FUNCTION: gen_usr_ldscript
436# @USAGE: [-a] <list of libs to create linker scripts for>
437# @DESCRIPTION:
306# This function generate linker scripts in /usr/lib for dynamic 438# This function generate linker scripts in /usr/lib for dynamic
307# libs in /lib. This is to fix linking problems when you have 439# libs in /lib. This is to fix linking problems when you have
308# the .so in /lib, and the .a in /usr/lib. What happens is that 440# the .so in /lib, and the .a in /usr/lib. What happens is that
309# in some cases when linking dynamic, the .a in /usr/lib is used 441# in some cases when linking dynamic, the .a in /usr/lib is used
310# instead of the .so in /lib due to gcc/libtool tweaking ld's 442# instead of the .so in /lib due to gcc/libtool tweaking ld's
311# library search path. This cause many builds to fail. 443# library search path. This causes many builds to fail.
312# See bug #4411 for more info. 444# See bug #4411 for more info.
313# 445#
314# To use, simply call:
315#
316# gen_usr_ldscript libfoo.so
317#
318# Note that you should in general use the unversioned name of 446# Note that you should in general use the unversioned name of
319# the library, as ldconfig should usually update it correctly 447# the library (libfoo.so), as ldconfig should usually update it
320# to point to the latest version of the library present. 448# correctly to point to the latest version of the library present.
321gen_usr_ldscript() { 449gen_usr_ldscript() {
322 local lib libdir=$(get_libdir) output_format="" 450 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
451 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
452
453 tc-is-static-only && return
454
323 # Just make sure it exists 455 # Just make sure it exists
324 dodir /usr/${libdir} 456 dodir /usr/${libdir}
457
458 if [[ $1 == "-a" ]] ; then
459 auto=true
460 shift
461 dodir /${libdir}
462 fi
325 463
326 # OUTPUT_FORMAT gives hints to the linker as to what binary format 464 # OUTPUT_FORMAT gives hints to the linker as to what binary format
327 # is referenced ... makes multilib saner 465 # is referenced ... makes multilib saner
328 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 466 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
329 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 467 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
330 468
331 for lib in "$@" ; do 469 for lib in "$@" ; do
332 if [[ ${USERLAND} == "Darwin" ]] ; then 470 local tlib
333 ewarn "Not creating fake dynamic library for $lib on Darwin;" 471 if ${auto} ; then
334 ewarn "making a symlink instead." 472 lib="lib${lib}${suffix}"
335 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
336 else 473 else
474 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
475 # This especially is for AIX where $(get_libname) can return ".a",
476 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
477 [[ -r ${ED}/${libdir}/${lib} ]] || continue
478 #TODO: better die here?
479 fi
480
481 case ${CTARGET:-${CHOST}} in
482 *-darwin*)
483 if ${auto} ; then
484 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
485 else
486 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
487 fi
488 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
489 tlib=${tlib##*/}
490
491 if ${auto} ; then
492 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
493 # some install_names are funky: they encode a version
494 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
495 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
496 fi
497 rm -f "${ED}"/${libdir}/${lib}
498 fi
499
500 # Mach-O files have an id, which is like a soname, it tells how
501 # another object linking against this lib should reference it.
502 # Since we moved the lib from usr/lib into lib this reference is
503 # wrong. Hence, we update it here. We don't configure with
504 # libdir=/lib because that messes up libtool files.
505 # Make sure we don't lose the specific version, so just modify the
506 # existing install_name
507 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
508 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
509 local nowrite=yes
510 fi
511 install_name_tool \
512 -id "${EPREFIX}"/${libdir}/${tlib} \
513 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
514 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
515 # Now as we don't use GNU binutils and our linker doesn't
516 # understand linker scripts, just create a symlink.
517 pushd "${ED}/usr/${libdir}" > /dev/null
518 ln -snf "../../${libdir}/${tlib}" "${lib}"
519 popd > /dev/null
520 ;;
521 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
522 if ${auto} ; then
523 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
524 # no way to retrieve soname on these platforms (?)
525 tlib=$(readlink "${ED}"/${libdir}/${lib})
526 tlib=${tlib##*/}
527 if [[ -z ${tlib} ]] ; then
528 # ok, apparently was not a symlink, don't remove it and
529 # just link to it
530 tlib=${lib}
531 else
532 rm -f "${ED}"/${libdir}/${lib}
533 fi
534 else
535 tlib=${lib}
536 fi
537
538 # we don't have GNU binutils on these platforms, so we symlink
539 # instead, which seems to work fine. Keep it relative, otherwise
540 # we break some QA checks in Portage
541 # on interix, the linker scripts would work fine in _most_
542 # situations. if a library links to such a linker script the
543 # absolute path to the correct library is inserted into the binary,
544 # which is wrong, since anybody linking _without_ libtool will miss
545 # some dependencies, since the stupid linker cannot find libraries
546 # hardcoded with absolute paths (as opposed to the loader, which
547 # seems to be able to do this).
548 # this has been seen while building shared-mime-info which needs
549 # libxml2, but links without libtool (and does not add libz to the
550 # command line by itself).
551 pushd "${ED}/usr/${libdir}" > /dev/null
552 ln -snf "../../${libdir}/${tlib}" "${lib}"
553 popd > /dev/null
554 ;;
555 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
556 if ${auto} ; then
557 tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
558 [[ -z ${tlib} ]] && tlib=${lib}
559 tlib=${tlib##*/} # 'internal name' can have a path component
560 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
561 # some SONAMEs are funky: they encode a version before the .so
562 if [[ ${tlib} != ${lib}* ]] ; then
563 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
564 fi
565 [[ ${tlib} != ${lib} ]] &&
566 rm -f "${ED}"/${libdir}/${lib}
567 else
568 tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
569 [[ -z ${tlib} ]] && tlib=${lib}
570 tlib=${tlib##*/} # 'internal name' can have a path component
571 fi
572 pushd "${ED}"/usr/${libdir} >/dev/null
573 ln -snf "../../${libdir}/${tlib}" "${lib}"
574 # need the internal name in usr/lib too, to be available at runtime
575 # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
576 [[ ${tlib} != ${lib} ]] &&
577 ln -snf "../../${libdir}/${tlib}" "${tlib}"
578 popd >/dev/null
579 ;;
580 *)
581 if ${auto} ; then
582 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
583 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
584 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
585 # some SONAMEs are funky: they encode a version before the .so
586 if [[ ${tlib} != ${lib}* ]] ; then
587 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
588 fi
589 rm -f "${ED}"/${libdir}/${lib}
590 else
591 tlib=${lib}
592 fi
337 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 593 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
338 /* GNU ld script 594 /* GNU ld script
339 Since Gentoo has critical dynamic libraries 595 Since Gentoo has critical dynamic libraries in /lib, and the static versions
340 in /lib, and the static versions in /usr/lib, 596 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
341 we need to have a "fake" dynamic lib in /usr/lib, 597 run into linking problems. This "fake" dynamic lib is a linker script that
342 otherwise we run into linking problems. 598 redirects the linker to the real lib. And yes, this works in the cross-
599 compiling scenario as the sysroot-ed linker will prepend the real path.
343 600
344 See bug http://bugs.gentoo.org/4411 for more info. 601 See bug http://bugs.gentoo.org/4411 for more info.
345 */ 602 */
346 ${output_format} 603 ${output_format}
347 GROUP ( /${libdir}/${lib} ) 604 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
348 END_LDSCRIPT 605 END_LDSCRIPT
349 fi 606 ;;
607 esac
350 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 608 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
351 done 609 done
352} 610}

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