/[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 1.90 2009/04/05 07:50:08 grobian 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 5# @ECLASS: toolchain-funcs.eclass
6# @MAINTAINER: 6# @MAINTAINER:
7# Toolchain Ninjas <toolchain@gentoo.org> 7# Toolchain Ninjas <toolchain@gentoo.org>
8# @BLURB: functions to query common info about the toolchain 8# @BLURB: functions to query common info about the toolchain
152 && echo "yes" \ 152 && echo "yes" \
153 || echo "no" 153 || echo "no"
154 ;; 154 ;;
155 esac 155 esac
156} 156}
157
158# @FUNCTION: tc-is-static-only
159# @DESCRIPTION:
160# Return shell true if the target does not support shared libs, shell false
161# otherwise.
162tc-is-static-only() {
163 local host=${CTARGET:-${CHOST}}
164
165 # *MiNT doesn't have shared libraries, only platform so far
166 return $([[ ${host} == *-mint* ]])
167}
168
157 169
158# Parse information from CBUILD/CHOST/CTARGET rather than 170# Parse information from CBUILD/CHOST/CTARGET rather than
159# use external variables from the profile. 171# use external variables from the profile.
160tc-ninja_magic_to_arch() { 172tc-ninja_magic_to_arch() {
161ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 173ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
401# Note that you should in general use the unversioned name of 413# Note that you should in general use the unversioned name of
402# the library (libfoo.so), as ldconfig should usually update it 414# the library (libfoo.so), as ldconfig should usually update it
403# correctly to point to the latest version of the library present. 415# correctly to point to the latest version of the library present.
404gen_usr_ldscript() { 416gen_usr_ldscript() {
405 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname) 417 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
418 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
419
420 tc-is-static-only && return
421
406 # Just make sure it exists 422 # Just make sure it exists
407 dodir /usr/${libdir} 423 dodir /usr/${libdir}
408 424
409 if [[ $1 == "-a" ]] ; then 425 if [[ $1 == "-a" ]] ; then
410 auto=true 426 auto=true
416 # is referenced ... makes multilib saner 432 # is referenced ... makes multilib saner
417 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 433 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
418 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 434 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
419 435
420 for lib in "$@" ; do 436 for lib in "$@" ; do
421 if [[ ${USERLAND} == "Darwin" ]] ; then 437 local tlib
422 ewarn "Not creating fake dynamic library for $lib on Darwin;" 438 if ${auto} ; then
423 ewarn "making a symlink instead." 439 lib="lib${lib}${suffix}"
424 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
425 else 440 else
426 local tlib 441 # Ensure /lib/${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*)
427 if ${auto} ; then 450 if ${auto} ; then
428 lib="lib${lib}${suffix}"
429 tlib=$(scanelf -qF'%S#F' "${D}"/usr/${libdir}/${lib}) 451 tlib=$(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 ${auto} ; then
430 mv "${D}"/usr/${libdir}/${lib}* "${D}"/${libdir}/ || die 481 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
431 # some SONAMEs are funky: they encode a version before the .so 482 # no way to retrieve soname on these platforms (?)
483 tlib=$(readlink "${ED}"/${libdir}/${lib})
484 tlib=${tlib##*/}
432 if [[ ${tlib} != ${lib}* ]] ; then 485 if [[ -z ${tlib} ]] ; then
433 mv "${D}"/usr/${libdir}/${tlib}* "${D}"/${libdir}/ || die 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}
434 fi 491 fi
435 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
436 rm -f "${D}"/${libdir}/${lib}
437 else 492 else
438 tlib=${lib} 493 tlib=${lib}
439 fi 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
440 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 526 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
441 /* GNU ld script 527 /* GNU ld script
442 Since Gentoo has critical dynamic libraries in /lib, and the static versions 528 Since Gentoo has critical dynamic libraries in /lib, and the static versions
443 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we 529 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
444 run into linking problems. This "fake" dynamic lib is a linker script that 530 run into linking problems. This "fake" dynamic lib is a linker script that
445 redirects the linker to the real lib. And yes, this works in the cross- 531 redirects the linker to the real lib. And yes, this works in the cross-
446 compiling scenario as the sysroot-ed linker will prepend the real path. 532 compiling scenario as the sysroot-ed linker will prepend the real path.
447 533
448 See bug http://bugs.gentoo.org/4411 for more info. 534 See bug http://bugs.gentoo.org/4411 for more info.
449 */ 535 */
450 ${output_format} 536 ${output_format}
451 GROUP ( /${libdir}/${tlib} ) 537 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
452 END_LDSCRIPT 538 END_LDSCRIPT
539 ;;
540 esac
453 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 541 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
454 fi
455 done 542 done
456} 543}

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