/[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 1.88 2009/03/28 11:09:27 vapier 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 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
86tc-getFC() { tc-getPROG FC gfortran "$@"; } 86tc-getFC() { tc-getPROG FC gfortran "$@"; }
87# @FUNCTION: tc-getGCJ 87# @FUNCTION: tc-getGCJ
88# @USAGE: [toolchain prefix] 88# @USAGE: [toolchain prefix]
89# @RETURN: name of the java compiler 89# @RETURN: name of the java compiler
90tc-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 "$@"; }
91 95
92# @FUNCTION: tc-getBUILD_CC 96# @FUNCTION: tc-getBUILD_CC
93# @USAGE: [toolchain prefix] 97# @USAGE: [toolchain prefix]
94# @RETURN: name of the C compiler for building binaries to run on the build machine 98# @RETURN: name of the C compiler for building binaries to run on the build machine
95tc-getBUILD_CC() { 99tc-getBUILD_CC() {
152 && echo "yes" \ 156 && echo "yes" \
153 || echo "no" 157 || echo "no"
154 ;; 158 ;;
155 esac 159 esac
156} 160}
161
162# @FUNCTION: tc-is-static-only
163# @DESCRIPTION:
164# Return shell true if the target does not support shared libs, shell false
165# otherwise.
166tc-is-static-only() {
167 local host=${CTARGET:-${CHOST}}
168
169 # *MiNT doesn't have shared libraries, only platform so far
170 return $([[ ${host} == *-mint* ]])
171}
172
173# @FUNCTION: tc-has-tls
174# @USAGE: [-s|-c|-l] [toolchain prefix]
175# @DESCRIPTION:
176# See if the toolchain supports thread local storage (TLS). Use -s to test the
177# compiler, -c to also test the assembler, and -l to also test the C library
178# (the default).
179tc-has-tls() {
180 local base="${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
157 202
158# Parse information from CBUILD/CHOST/CTARGET rather than 203# Parse information from CBUILD/CHOST/CTARGET rather than
159# use external variables from the profile. 204# use external variables from the profile.
160tc-ninja_magic_to_arch() { 205tc-ninja_magic_to_arch() {
161ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 206ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
401# Note that you should in general use the unversioned name of 446# Note that you should in general use the unversioned name of
402# the library (libfoo.so), as ldconfig should usually update it 447# the library (libfoo.so), as ldconfig should usually update it
403# correctly to point to the latest version of the library present. 448# correctly to point to the latest version of the library present.
404gen_usr_ldscript() { 449gen_usr_ldscript() {
405 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname) 450 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
451 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
452
453 tc-is-static-only && return
454
406 # Just make sure it exists 455 # Just make sure it exists
407 dodir /usr/${libdir} 456 dodir /usr/${libdir}
408 457
409 if [[ $1 == "-a" ]] ; then 458 if [[ $1 == "-a" ]] ; then
410 auto=true 459 auto=true
416 # is referenced ... makes multilib saner 465 # is referenced ... makes multilib saner
417 output_format=$($(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')
418 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 467 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
419 468
420 for lib in "$@" ; do 469 for lib in "$@" ; do
421 if [[ ${USERLAND} == "Darwin" ]] ; then 470 local tlib
422 ewarn "Not creating fake dynamic library for $lib on Darwin;" 471 if ${auto} ; then
423 ewarn "making a symlink instead." 472 lib="lib${lib}${suffix}"
424 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
425 else 473 else
426 local tlib 474 # Ensure /lib/${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*)
427 if ${auto} ; then 483 if ${auto} ; then
428 lib="lib${lib}${suffix}"
429 tlib=$(scanelf -qF'%S#F' "${D}"/usr/${libdir}/${lib}) 484 tlib=$(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 ${auto} ; then
430 mv "${D}"/usr/${libdir}/${lib}* "${D}"/${libdir}/ || die 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
431 # some SONAMEs are funky: they encode a version before the .so 561 # some SONAMEs are funky: they encode a version before the .so
432 if [[ ${tlib} != ${lib}* ]] ; then 562 if [[ ${tlib} != ${lib}* ]] ; then
433 mv "${D}"/usr/${libdir}/${tlib}* "${D}"/${libdir}/ || die 563 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
434 fi 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})
435 [[ -z ${tlib} ]] && die "unable to read SONAME from ${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
436 rm -f "${D}"/${libdir}/${lib} 589 rm -f "${ED}"/${libdir}/${lib}
437 else 590 else
438 tlib=${lib} 591 tlib=${lib}
439 fi 592 fi
440 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 593 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
441 /* GNU ld script 594 /* GNU ld script
442 Since Gentoo has critical dynamic libraries in /lib, and the static versions 595 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 596 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 597 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- 598 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. 599 compiling scenario as the sysroot-ed linker will prepend the real path.
447 600
448 See bug http://bugs.gentoo.org/4411 for more info. 601 See bug http://bugs.gentoo.org/4411 for more info.
449 */ 602 */
450 ${output_format} 603 ${output_format}
451 GROUP ( /${libdir}/${tlib} ) 604 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
452 END_LDSCRIPT 605 END_LDSCRIPT
606 ;;
607 esac
453 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 608 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
454 fi
455 done 609 done
456} 610}

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