/[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 1.83 2009/01/08 09:56:00 gengor Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.92 2009/08/15 15:11:17 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
… …
70tc-getNM() { tc-getPROG NM nm "$@"; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB 71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix] 72# @USAGE: [toolchain prefix]
73# @RETURN: name of the archiver indexer 73# @RETURN: name of the archiver indexer
74tc-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 "$@"; }
75# @FUNCTION: tc-getF77 79# @FUNCTION: tc-getF77
76# @USAGE: [toolchain prefix] 80# @USAGE: [toolchain prefix]
77# @RETURN: name of the Fortran 77 compiler 81# @RETURN: name of the Fortran 77 compiler
78tc-getF77() { tc-getPROG F77 f77 "$@"; } 82tc-getF77() { tc-getPROG F77 f77 "$@"; }
79# @FUNCTION: tc-getFC 83# @FUNCTION: tc-getFC
… …
148 && echo "yes" \ 152 && echo "yes" \
149 || echo "no" 153 || echo "no"
150 ;; 154 ;;
151 esac 155 esac
152} 156}
157
158# @FUNCTION: tc-is-static-only
159# @DESCRIPTION:
160# Return shell true if the target does not support shared libs, shell false
161# otherwise.
162tc-is-static-only() {
163 local host=${CTARGET:-${CHOST}}
164
165 # *MiNT doesn't have shared libraries, only platform so far
166 return $([[ ${host} == *-mint* ]])
167}
168
153 169
154# Parse information from CBUILD/CHOST/CTARGET rather than 170# Parse information from CBUILD/CHOST/CTARGET rather than
155# use external variables from the profile. 171# use external variables from the profile.
156tc-ninja_magic_to_arch() { 172tc-ninja_magic_to_arch() {
157ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 173ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
… …
347 363
348# Returns true if gcc sets relro 364# Returns true if gcc sets relro
349gcc-specs-relro() { 365gcc-specs-relro() {
350 local directive 366 local directive
351 directive=$(gcc-specs-directive link_command) 367 directive=$(gcc-specs-directive link_command)
352 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 368 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
353} 369}
354# Returns true if gcc sets now 370# Returns true if gcc sets now
355gcc-specs-now() { 371gcc-specs-now() {
356 local directive 372 local directive
357 directive=$(gcc-specs-directive link_command) 373 directive=$(gcc-specs-directive link_command)
358 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 374 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
359} 375}
360# Returns true if gcc builds PIEs 376# Returns true if gcc builds PIEs
361gcc-specs-pie() { 377gcc-specs-pie() {
362 local directive 378 local directive
363 directive=$(gcc-specs-directive cc1) 379 directive=$(gcc-specs-directive cc1)
364 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 380 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
365} 381}
366# Returns true if gcc builds with the stack protector 382# Returns true if gcc builds with the stack protector
367gcc-specs-ssp() { 383gcc-specs-ssp() {
368 local directive 384 local directive
369 directive=$(gcc-specs-directive cc1) 385 directive=$(gcc-specs-directive cc1)
370 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 386 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
371} 387}
372# Returns true if gcc upgrades fstack-protector to fstack-protector-all 388# Returns true if gcc upgrades fstack-protector to fstack-protector-all
373gcc-specs-ssp-to-all() { 389gcc-specs-ssp-to-all() {
374 local directive 390 local directive
375 directive=$(gcc-specs-directive cc1) 391 directive=$(gcc-specs-directive cc1)
376 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 392 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
377} 393}
378# Returns true if gcc builds with fno-strict-overflow 394# Returns true if gcc builds with fno-strict-overflow
379gcc-specs-nostrict() { 395gcc-specs-nostrict() {
380 local directive 396 local directive
381 directive=$(gcc-specs-directive cc1) 397 directive=$(gcc-specs-directive cc1)
382 return $([[ ${directive/\{!fstrict-overflow:} != ${directive} ]]) 398 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
383} 399}
384 400
385 401
386# @FUNCTION: gen_usr_ldscript 402# @FUNCTION: gen_usr_ldscript
387# @USAGE: <list of libs to create linker scripts for> 403# @USAGE: [-a] <list of libs to create linker scripts for>
388# @DESCRIPTION: 404# @DESCRIPTION:
389# This function generate linker scripts in /usr/lib for dynamic 405# This function generate linker scripts in /usr/lib for dynamic
390# libs in /lib. This is to fix linking problems when you have 406# libs in /lib. This is to fix linking problems when you have
391# the .so in /lib, and the .a in /usr/lib. What happens is that 407# the .so in /lib, and the .a in /usr/lib. What happens is that
392# in some cases when linking dynamic, the .a in /usr/lib is used 408# in some cases when linking dynamic, the .a in /usr/lib is used
… …
396# 412#
397# Note that you should in general use the unversioned name of 413# Note that you should in general use the unversioned name of
398# the library (libfoo.so), as ldconfig should usually update it 414# the library (libfoo.so), as ldconfig should usually update it
399# correctly to point to the latest version of the library present. 415# correctly to point to the latest version of the library present.
400gen_usr_ldscript() { 416gen_usr_ldscript() {
401 local lib libdir=$(get_libdir) output_format="" 417 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
418 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
419
420 tc-is-static-only && return
421
402 # Just make sure it exists 422 # Just make sure it exists
403 dodir /usr/${libdir} 423 dodir /usr/${libdir}
424
425 if [[ $1 == "-a" ]] ; then
426 auto=true
427 shift
428 dodir /${libdir}
429 fi
404 430
405 # OUTPUT_FORMAT gives hints to the linker as to what binary format 431 # OUTPUT_FORMAT gives hints to the linker as to what binary format
406 # is referenced ... makes multilib saner 432 # is referenced ... makes multilib saner
407 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')
408 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 434 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
409 435
410 for lib in "$@" ; do 436 for lib in "$@" ; do
411 if [[ ${USERLAND} == "Darwin" ]] ; then 437 local tlib
412 ewarn "Not creating fake dynamic library for $lib on Darwin;" 438 if ${auto} ; then
413 ewarn "making a symlink instead." 439 lib="lib${lib}${suffix}"
414 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
415 else 440 else
441 # Ensure /lib/${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 # some install_names are funky: they encode a version
461 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
462 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
463 fi
464 rm -f "${ED}"/${libdir}/${lib}
465 fi
466
467 # Mach-O files have an id, which is like a soname, it tells how
468 # another object linking against this lib should reference it.
469 # Since we moved the lib from usr/lib into lib this reference is
470 # wrong. Hence, we update it here. We don't configure with
471 # libdir=/lib because that messes up libtool files.
472 # Make sure we don't lose the specific version, so just modify the
473 # existing install_name
474 install_name_tool \
475 -id "${EPREFIX}"/${libdir}/${tlib} \
476 "${ED}"/${libdir}/${tlib}
477 # Now as we don't use GNU binutils and our linker doesn't
478 # understand linker scripts, just create a symlink.
479 pushd "${ED}/usr/${libdir}" > /dev/null
480 ln -snf "../../${libdir}/${tlib}" "${lib}"
481 popd > /dev/null
482 ;;
483 *-aix*|*-irix*|*-hpux*|*-interix*|*-winnt*)
484 if ${auto} ; then
485 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
486 # no way to retrieve soname on these platforms (?)
487 tlib=$(readlink "${ED}"/${libdir}/${lib})
488 tlib=${tlib##*/}
489 if [[ -z ${tlib} ]] ; then
490 # ok, apparently was not a symlink, don't remove it and
491 # just link to it
492 tlib=${lib}
493 else
494 rm -f "${ED}"/${libdir}/${lib}
495 fi
496 else
497 tlib=${lib}
498 fi
499
500 # we don't have GNU binutils on these platforms, so we symlink
501 # instead, which seems to work fine. Keep it relative, otherwise
502 # we break some QA checks in Portage
503 # on interix, the linker scripts would work fine in _most_
504 # situations. if a library links to such a linker script the
505 # absolute path to the correct library is inserted into the binary,
506 # which is wrong, since anybody linking _without_ libtool will miss
507 # some dependencies, since the stupid linker cannot find libraries
508 # hardcoded with absolute paths (as opposed to the loader, which
509 # seems to be able to do this).
510 # this has been seen while building shared-mime-info which needs
511 # libxml2, but links without libtool (and does not add libz to the
512 # command line by itself).
513 pushd "${ED}/usr/${libdir}" > /dev/null
514 ln -snf "../../${libdir}/${tlib}" "${lib}"
515 popd > /dev/null
516 ;;
517 *)
518 if ${auto} ; then
519 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
520 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
521 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
522 # some SONAMEs are funky: they encode a version before the .so
523 if [[ ${tlib} != ${lib}* ]] ; then
524 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
525 fi
526 rm -f "${ED}"/${libdir}/${lib}
527 else
528 tlib=${lib}
529 fi
416 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 530 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
417 /* GNU ld script 531 /* GNU ld script
418 Since Gentoo has critical dynamic libraries 532 Since Gentoo has critical dynamic libraries in /lib, and the static versions
419 in /lib, and the static versions in /usr/lib, 533 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
420 we need to have a "fake" dynamic lib in /usr/lib, 534 run into linking problems. This "fake" dynamic lib is a linker script that
421 otherwise we run into linking problems. 535 redirects the linker to the real lib. And yes, this works in the cross-
536 compiling scenario as the sysroot-ed linker will prepend the real path.
422 537
423 See bug http://bugs.gentoo.org/4411 for more info. 538 See bug http://bugs.gentoo.org/4411 for more info.
424 */ 539 */
425 ${output_format} 540 ${output_format}
426 GROUP ( /${libdir}/${lib} ) 541 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
427 END_LDSCRIPT 542 END_LDSCRIPT
428 fi 543 ;;
544 esac
429 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 545 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
430 done 546 done
431} 547}
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