/[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 1.17 2004/12/30 21:27:27 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.89 2009/04/04 17:17:56 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
10inherit eutils 16___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11 17[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
12ECLASS=toolchain-funcs
13INHERITED="$INHERITED $ECLASS"
14 18
15DESCRIPTION="Based on the ${ECLASS} eclass" 19DESCRIPTION="Based on the ${ECLASS} eclass"
16 20
17tc-getPROG() { 21tc-getPROG() {
18 local var=$1 22 local var=$1
21 if [[ -n ${!var} ]] ; then 25 if [[ -n ${!var} ]] ; then
22 echo "${!var}" 26 echo "${!var}"
23 return 0 27 return 0
24 fi 28 fi
25 29
26 if [[ -n ${CHOST} ]] ; then 30 local search=
27 local search=$(type -p "${CHOST}-${prog}") 31 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
28 prog=${search##*/} 32 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
29 fi 33 [[ -n ${search} ]] && prog=${search##*/}
30 34
31 export ${var}=${prog} 35 export ${var}=${prog}
32 echo "${!var}" 36 echo "${!var}"
33} 37}
34 38
35# Returns the name of the archiver 39# @FUNCTION: tc-getAR
40# @USAGE: [toolchain prefix]
41# @RETURN: name of the archiver
36tc-getAR() { tc-getPROG AR ar; } 42tc-getAR() { tc-getPROG AR ar "$@"; }
37# Returns the name of the assembler 43# @FUNCTION: tc-getAS
44# @USAGE: [toolchain prefix]
45# @RETURN: name of the assembler
38tc-getAS() { tc-getPROG AS as; } 46tc-getAS() { tc-getPROG AS as "$@"; }
47# @FUNCTION: tc-getCC
48# @USAGE: [toolchain prefix]
39# Returns the name of the C compiler 49# @RETURN: name of the C compiler
40tc-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]
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++ "$@"; }
43# Returns the name of the linker 59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
44tc-getLD() { tc-getPROG LD ld; } 62tc-getLD() { tc-getPROG LD ld "$@"; }
63# @FUNCTION: tc-getSTRIP
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the strip program
66tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67# @FUNCTION: tc-getNM
68# @USAGE: [toolchain prefix]
45# Returns the name of the symbol/object thingy 69# @RETURN: name of the symbol/object thingy
46tc-getNM() { tc-getPROG NM nm; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
47# Returns the name of the archiver indexer 73# @RETURN: name of the archiver indexer
48tc-getRANLIB() { tc-getPROG RANLIB ranlib; } 74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
49# Returns the name of the fortran compiler 75# @FUNCTION: tc-getOBJCOPY
76# @USAGE: [toolchain prefix]
77# @RETURN: name of the object copier
78tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
79# @FUNCTION: tc-getF77
80# @USAGE: [toolchain prefix]
81# @RETURN: name of the Fortran 77 compiler
50tc-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]
51# Returns the name of the java compiler 89# @RETURN: name of the java compiler
52tc-getGCJ() { tc-getPROG GCJ gcj; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
53 91
54# 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
55tc-getBUILD_CC() { 95tc-getBUILD_CC() {
96 local v
97 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
56 if [[ -n ${CC_FOR_BUILD} ]] ; then 98 if [[ -n ${!v} ]] ; then
57 export BUILD_CC=${CC_FOR_BUILD} 99 export BUILD_CC=${!v}
58 echo "${CC_FOR_BUILD}" 100 echo "${!v}"
59 return 0 101 return 0
60 fi 102 fi
103 done
61 104
62 local search= 105 local search=
63 if [[ -n ${CBUILD} ]] ; then 106 if [[ -n ${CBUILD} ]] ; then
64 search=$(type -p "${CBUILD}-gcc") 107 search=$(type -p ${CBUILD}-gcc)
65 search=${search##*/} 108 search=${search##*/}
66 else
67 search=gcc
68 fi 109 fi
110 search=${search:-gcc}
69 111
70 export BUILD_CC=${search} 112 export BUILD_CC=${search}
71 echo "${search}" 113 echo "${search}"
72} 114}
73 115
116# @FUNCTION: tc-export
117# @USAGE: <list of toolchain variables>
118# @DESCRIPTION:
74# Quick way to export a bunch of vars at once 119# Quick way to export a bunch of compiler vars at once.
75tc-export() { 120tc-export() {
76 local var 121 local var
77 for var in "$@" ; do 122 for var in "$@" ; do
123 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
78 eval tc-get${var} 124 eval tc-get${var} > /dev/null
79 done 125 done
80} 126}
81 127
82# 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
83tc-is-cross-compiler() { 130tc-is-cross-compiler() {
84 if [[ -n ${CBUILD} ]] ; then
85 return $([[ ${CBUILD} != ${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# Parse information from CBUILD/CHOST/CTARGET rather than
159# use external variables from the profile.
160tc-ninja_magic_to_arch() {
161ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
162
163 local type=$1
164 local host=$2
165 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
166
167 case ${host} in
168 powerpc-apple-darwin*)
169 echo ppc-macos;;
170 powerpc64-apple-darwin*)
171 echo ppc64-macos;;
172 i?86-apple-darwin*)
173 echo x86-macos;;
174 x86_64-apple-darwin*)
175 echo x64-macos;;
176 sparc-sun-solaris*)
177 echo sparc-solaris;;
178 sparcv9-sun-solaris*)
179 echo sparc64-solaris;;
180 i?86-pc-solaris*)
181 echo x86-solaris;;
182 x86_64-pc-solaris*)
183 echo x64-solaris;;
184 powerpc-ibm-aix*)
185 echo ppc-aix;;
186 mips-sgi-irix*)
187 echo mips-irix;;
188 ia64-hp-hpux*)
189 echo ia64-hpux;;
190 i?86-pc-freebsd*)
191 echo x86-freebsd;;
192 x86_64-pc-freebsd*)
193 echo x64-freebsd;;
194 i?86-pc-netbsd*)
195 echo x86-netbsd;;
196 i?86-pc-interix*)
197 echo x86-interix;;
198 i?86-pc-winnt*)
199 echo x86-winnt;;
200 i*-pc-freebsd*)
201 echo x86-freebsd;;
202 x86_64-pc-freebsd*)
203 echo x64-freebsd;;
204
205 alpha*) echo alpha;;
206 arm*) echo arm;;
207 avr*) ninj avr32 avr;;
208 bfin*) ninj blackfin bfin;;
209 cris*) echo cris;;
210 hppa*) ninj parisc hppa;;
211 i?86*)
212 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
213 # trees have been unified into 'x86'.
214 # FreeBSD still uses i386
215 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
216 echo i386
217 else
218 echo x86
219 fi
220 ;;
221 ia64*) echo ia64;;
222 m68*) echo m68k;;
223 mips*) echo mips;;
224 nios2*) echo nios2;;
225 nios*) echo nios;;
226 powerpc*)
227 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
228 # have been unified into simply 'powerpc', but until 2.6.16,
229 # ppc32 is still using ARCH="ppc" as default
230 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
231 echo powerpc
232 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
233 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
234 echo powerpc
235 else
236 echo ppc
237 fi
238 elif [[ ${host} == powerpc64* ]] ; then
239 echo ppc64
240 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
241 ninj ppc64 ppc
242 else
243 echo ppc
244 fi
245 ;;
246 s390*) echo s390;;
247 sh64*) ninj sh64 sh;;
248 sh*) echo sh;;
249 sparc64*) ninj sparc64 sparc;;
250 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
251 && ninj sparc64 sparc \
252 || echo sparc
253 ;;
254 vax*) echo vax;;
255 x86_64*)
256 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
257 # trees have been unified into 'x86'.
258 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
259 echo x86
260 else
261 ninj x86_64 amd64
262 fi
263 ;;
264
265 # since our usage of tc-arch is largely concerned with
266 # normalizing inputs for testing ${CTARGET}, let's filter
267 # other cross targets (mingw and such) into the unknown.
268 *) echo unknown;;
269 esac
270}
271# @FUNCTION: tc-arch-kernel
272# @USAGE: [toolchain prefix]
273# @RETURN: name of the kernel arch according to the compiler target
274tc-arch-kernel() {
275 tc-ninja_magic_to_arch kern "$@"
276}
277# @FUNCTION: tc-arch
278# @USAGE: [toolchain prefix]
279# @RETURN: name of the portage arch according to the compiler target
280tc-arch() {
281 tc-ninja_magic_to_arch portage "$@"
282}
283
284tc-endian() {
285 local host=$1
286 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
287 host=${host%%-*}
288
289 case ${host} in
290 alpha*) echo big;;
291 arm*b*) echo big;;
292 arm*) echo little;;
293 cris*) echo little;;
294 hppa*) echo big;;
295 i?86*) echo little;;
296 ia64*) echo little;;
297 m68*) echo big;;
298 mips*l*) echo little;;
299 mips*) echo big;;
300 powerpc*) echo big;;
301 s390*) echo big;;
302 sh*b*) echo big;;
303 sh*) echo little;;
304 sparc*) echo big;;
305 x86_64*) echo little;;
306 *) echo wtf;;
307 esac
308}
309
310# @FUNCTION: gcc-fullversion
311# @RETURN: compiler version (major.minor.micro: [3.4.6])
312gcc-fullversion() {
313 $(tc-getCC "$@") -dumpversion
314}
315# @FUNCTION: gcc-version
316# @RETURN: compiler version (major.minor: [3.4].6)
317gcc-version() {
318 gcc-fullversion "$@" | cut -f1,2 -d.
319}
320# @FUNCTION: gcc-major-version
321# @RETURN: major compiler version (major: [3].4.6)
322gcc-major-version() {
323 gcc-version "$@" | cut -f1 -d.
324}
325# @FUNCTION: gcc-minor-version
326# @RETURN: minor compiler version (minor: 3.[4].6)
327gcc-minor-version() {
328 gcc-version "$@" | cut -f2 -d.
329}
330# @FUNCTION: gcc-micro-version
331# @RETURN: micro compiler version (micro: 3.4.[6])
332gcc-micro-version() {
333 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
334}
335
336# Returns the installation directory - internal toolchain
337# function for use by _gcc-specs-exists (for flag-o-matic).
338_gcc-install-dir() {
339 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
340 awk '$1=="install:" {print $2}')"
341}
342# Returns true if the indicated specs file exists - internal toolchain
343# function for use by flag-o-matic.
344_gcc-specs-exists() {
345 [[ -f $(_gcc-install-dir)/$1 ]]
346}
347
348# Returns requested gcc specs directive unprocessed - for used by
349# gcc-specs-directive()
350# Note; later specs normally overwrite earlier ones; however if a later
351# spec starts with '+' then it appends.
352# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
353# as "Reading <file>", in order. Strictly speaking, if there's a
354# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
355# the same token anything from 'gcc -dumpspecs' is overridden by
356# the contents of $(gcc_install_dir)/specs so the result is the
357# same either way.
358_gcc-specs-directive_raw() {
359 local cc=$(tc-getCC)
360 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
361 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
362'BEGIN { pspec=""; spec=""; outside=1 }
363$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
364 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
365 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
366 { spec=spec $0 }
367END { print spec }'
368 return 0
369}
370
371# Return the requested gcc specs directive, with all included
372# specs expanded.
373# Note, it does not check for inclusion loops, which cause it
374# to never finish - but such loops are invalid for gcc and we're
375# assuming gcc is operational.
376gcc-specs-directive() {
377 local directive subdname subdirective
378 directive="$(_gcc-specs-directive_raw $1)"
379 while [[ ${directive} == *%\(*\)* ]]; do
380 subdname=${directive/*%\(}
381 subdname=${subdname/\)*}
382 subdirective="$(_gcc-specs-directive_raw ${subdname})"
383 directive="${directive//\%(${subdname})/${subdirective}}"
384 done
385 echo "${directive}"
386 return 0
387}
388
389# Returns true if gcc sets relro
390gcc-specs-relro() {
391 local directive
392 directive=$(gcc-specs-directive link_command)
393 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
394}
395# Returns true if gcc sets now
396gcc-specs-now() {
397 local directive
398 directive=$(gcc-specs-directive link_command)
399 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
400}
401# Returns true if gcc builds PIEs
402gcc-specs-pie() {
403 local directive
404 directive=$(gcc-specs-directive cc1)
405 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
406}
407# Returns true if gcc builds with the stack protector
408gcc-specs-ssp() {
409 local directive
410 directive=$(gcc-specs-directive cc1)
411 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
412}
413# Returns true if gcc upgrades fstack-protector to fstack-protector-all
414gcc-specs-ssp-to-all() {
415 local directive
416 directive=$(gcc-specs-directive cc1)
417 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
418}
419# Returns true if gcc builds with fno-strict-overflow
420gcc-specs-nostrict() {
421 local directive
422 directive=$(gcc-specs-directive cc1)
423 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
424}
425
426
427# @FUNCTION: gen_usr_ldscript
428# @USAGE: [-a] <list of libs to create linker scripts for>
429# @DESCRIPTION:
430# This function generate linker scripts in /usr/lib for dynamic
431# libs in /lib. This is to fix linking problems when you have
432# the .so in /lib, and the .a in /usr/lib. What happens is that
433# in some cases when linking dynamic, the .a in /usr/lib is used
434# instead of the .so in /lib due to gcc/libtool tweaking ld's
435# library search path. This causes many builds to fail.
436# See bug #4411 for more info.
437#
438# Note that you should in general use the unversioned name of
439# the library (libfoo.so), as ldconfig should usually update it
440# correctly to point to the latest version of the library present.
441gen_usr_ldscript() {
442 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
443 # Just make sure it exists
444 dodir /usr/${libdir}
445
446 if [[ $1 == "-a" ]] ; then
447 auto=true
448 shift
449 dodir /${libdir}
86 fi 450 fi
451
452 # OUTPUT_FORMAT gives hints to the linker as to what binary format
453 # is referenced ... makes multilib saner
454 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
455 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
456
457 for lib in "$@" ; do
458
459 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
460 # This especially is for AIX where $(get_libname) can return ".a",
461 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
462 [[ -r "${ED}"/${libdir}/${lib} ]] || continue
463
464 case ${CHOST} in
465 *-darwin*)
466 # Mach-O files have an id, which is like a soname, it tells how
467 # another object linking against this lib should reference it.
468 # Since we moved the lib from usr/lib into lib this reference is
469 # wrong. Hence, we update it here. We don't configure with
470 # libdir=/lib because that messes up libtool files.
471 # Make sure we don't lose the specific version, so just modify the
472 # existing install_name
473 install_name=$(otool -DX "${ED}"/${libdir}/${lib})
474 [[ -z ${install_name} ]] && die "No install name found for ${ED}/${libdir}/${lib}"
475 install_name_tool \
476 -id "${EPREFIX}"/${libdir}/${install_name##*/} \
477 "${ED}"/${libdir}/${lib}
478 # Now as we don't use GNU binutils and our linker doesn't
479 # understand linker scripts, just create a symlink.
480 pushd "${ED}/usr/${libdir}" > /dev/null
481 ln -snf "../../${libdir}/${lib}" "${lib}"
482 popd > /dev/null
483 ;;
484 *-aix*|*-irix*|*-hpux*)
485 # we don't have GNU binutils on these platforms, so we symlink
486 # instead, which seems to work fine. Keep it relative, otherwise
487 # we break some QA checks in Portage
488 pushd "${ED}/usr/${libdir}" > /dev/null
489 ln -snf "../../${libdir}/${lib}" "${lib}"
490 popd > /dev/null
491 ;;
492 *-interix*|*-winnt*)
493 # on interix, the linker scripts would work fine in _most_
494 # situations. if a library links to such a linker script the
495 # absolute path to the correct library is inserted into the binary,
496 # which is wrong, since anybody linking _without_ libtool will miss
497 # some dependencies, since the stupid linker cannot find libraries
498 # hardcoded with absolute paths (as opposed to the loader, which
499 # seems to be able to do this).
500 # this has been seen while building shared-mime-info which needs
501 # libxml2, but links without libtool (and does not add libz to the
502 # command line by itself).
503 pushd "${ED}/usr/${libdir}" > /dev/null
504 ln -snf "../../${libdir}/${lib}" "${lib}"
505 popd > /dev/null
506 ;;
507 *-mint*)
508 # do nothing
509 return
510 ;;
511 *)
512 local tlib
513 if ${auto} ; then
514 lib="lib${lib}${suffix}"
515 tlib=$(scanelf -qF'%S#F' "${D}"/usr/${libdir}/${lib})
516 mv "${D}"/usr/${libdir}/${lib}* "${D}"/${libdir}/ || die
517 # some SONAMEs are funky: they encode a version before the .so
518 if [[ ${tlib} != ${lib}* ]] ; then
519 mv "${D}"/usr/${libdir}/${tlib}* "${D}"/${libdir}/ || die
520 fi
521 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
522 rm -f "${D}"/${libdir}/${lib}
523 else
524 tlib=${lib}
525 fi
526 cat > "${D}/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 ${output_format}
537 GROUP ( /${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}
544
545# This function is for AIX only.
546#
547# Showing a sample IMO is the best description:
548#
549# First, AIX has its own /usr/lib/libiconv.a containing 'shr.o' and 'shr4.o'.
550# Both of them are shared-objects packed into an archive, thus /usr/lib/libiconv.a
551# is a shared library (!), even it is called lib*.a.
552# This is the default layout on aix for shared libraries.
553# Read the ld(1) manpage for more information.
554#
555# But now, we want to install GNU libiconv (sys-libs/libiconv) both as
556# shared and static library.
557# AIX (since 4.3) can create shared libraries if '-brtl' or '-G' linker flags
558# are used.
559#
560# Now assume we have GNU tar installed while GNU libiconv was not.
561# This tar now has a runtime dependency on "libiconv.a(shr4.o)".
562# With our ld-wrapper (from sys-devel/binutils-config) we add EPREFIX/usr/lib
563# as linker path, thus it is recorded as loader path into the binary.
564#
565# When having libiconv.a (the static GNU libiconv) in prefix, the loader finds
566# that one and claims that it does not contain an 'shr4.o' object file:
567#
568# Could not load program tar:
569# Dependent module EPREFIX/usr/lib/libiconv.a(shr4.o) could not be loaded.
570# Member shr4.o is not found in archive
571#
572# According to gcc's "host/target specific installation notes" for *-ibm-aix* [1],
573# we can extract that 'shr4.o' from /usr/lib/libiconv.a, mark it as
574# non-linkable, and include it in our new static library.
575#
576# [1] http://gcc.gnu.org/install/specific.html#x-ibm-aix
577#
578# usage:
579# keep_aix_runtime_object <target-archive inside EPREFIX> <source-archive(objects)>
580# keep_aix_runtime_object "/usr/lib/libiconv.a "/usr/lib/libiconv.a(shr4.o,...)"
581keep_aix_runtime_objects() {
582 [[ ${CHOST} == *-*-aix* ]] || return 0
583
584 local target=$1
585 shift
586 local sources="$@"
587
588 # strip possible ${ED} prefixes
589 target=${target##/}
590 target=${target#${D##/}}
591 target=${target#${EPREFIX##/}}
592 target=${target##/}
593
594 if ! $(tc-getAR) -t "${ED}${target}" &>/dev/null; then
595 if [[ -e ${ED}${target} ]]; then
596 ewarn "${target} is not an archive."
597 fi
87 return 1 598 return 0
88} 599 fi
89 600
601 local tmpdir=${TMP}/keep_aix_runtime_object-$$
602 mkdir ${tmpdir} || die
90 603
91# Returns the version as by `$CC -dumpversion` 604 local origdir=$(pwd)
92gcc-fullversion() { 605 local s
93 echo "$($(tc-getCC) -dumpversion)" 606 for s in ${sources}; do
607 local sourcelib sourceobjs so
608 # format of $s: "/usr/lib/libiconv.a(shr4.o,shr.o)"
609 sourcelib=${s%%(*}
610 sourceobjs=${s#*(}
611 sourceobjs=${sourceobjs%)}
612 sourceobjs=${sourceobjs//,/ }
613 cd ${tmpdir} || die
614 for so in ${sourceobjs}; do
615 ebegin "keeping aix runtime object '${sourcelib}(${so})' in '${EPREFIX}/${target}'"
616 if ! $(tc-getAR) -x "${sourcelib}" ${so}; then
617 eend 1
618 continue
619 fi
620 chmod +w ${so} &&
621 $(tc-getSTRIP) -e ${so} &&
622 $(tc-getAR) -q "${ED}${target}" ${so} &&
623 eend 0 ||
624 eend 1
625 done
626 done
627 cd "${origdir}"
94} 628}
95# Returns the version, but only the <major>.<minor>
96gcc-version() {
97 echo "$(gcc-fullversion | cut -f1,2 -d.)"
98}
99# Returns the Major version
100gcc-major-version() {
101 echo "$(gcc-version | cut -f1 -d.)"
102}
103# Returns the Minor version
104gcc-minor-version() {
105 echo "$(gcc-version | cut -f2 -d.)"
106}
107# Returns the Micro version
108gcc-micro-version() {
109 echo "$(gcc-fullversion | cut -f3 -d.)"
110}

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