/[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 1.84 2009/01/08 11:06:10 gengor Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.98 2010/03/15 23:51:14 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
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 "$@"; }
79# @FUNCTION: tc-getFC 83# @FUNCTION: tc-getFC
82tc-getFC() { tc-getPROG FC gfortran "$@"; } 86tc-getFC() { tc-getPROG FC gfortran "$@"; }
83# @FUNCTION: tc-getGCJ 87# @FUNCTION: tc-getGCJ
84# @USAGE: [toolchain prefix] 88# @USAGE: [toolchain prefix]
85# @RETURN: name of the java compiler 89# @RETURN: name of the java compiler
86tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
91# @FUNCTION: tc-getPKG_CONFIG
92# @USAGE: [toolchain prefix]
93# @RETURN: name of the pkg-config tool
94tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
95# @FUNCTION: tc-getRC
96# @USAGE: [toolchain prefix]
97# @RETURN: name of the Windows resource compiler
98tc-getRC() { tc-getPROG RC windres "$@"; }
99# @FUNCTION: tc-getDLLWRAP
100# @USAGE: [toolchain prefix]
101# @RETURN: name of the Windows dllwrap utility
102tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
87 103
88# @FUNCTION: tc-getBUILD_CC 104# @FUNCTION: tc-getBUILD_CC
89# @USAGE: [toolchain prefix] 105# @USAGE: [toolchain prefix]
90# @RETURN: name of the C compiler for building binaries to run on the build machine 106# @RETURN: name of the C compiler for building binaries to run on the build machine
91tc-getBUILD_CC() { 107tc-getBUILD_CC() {
148 && echo "yes" \ 164 && echo "yes" \
149 || echo "no" 165 || echo "no"
150 ;; 166 ;;
151 esac 167 esac
152} 168}
169
170# @FUNCTION: tc-is-static-only
171# @DESCRIPTION:
172# Return shell true if the target does not support shared libs, shell false
173# otherwise.
174tc-is-static-only() {
175 local host=${CTARGET:-${CHOST}}
176
177 # *MiNT doesn't have shared libraries, only platform so far
178 return $([[ ${host} == *-mint* ]])
179}
180
181# @FUNCTION: tc-has-tls
182# @USAGE: [-s|-c|-l] [toolchain prefix]
183# @DESCRIPTION:
184# See if the toolchain supports thread local storage (TLS). Use -s to test the
185# compiler, -c to also test the assembler, and -l to also test the C library
186# (the default).
187tc-has-tls() {
188 local base="${T}/test-tc-tls"
189 cat <<-EOF > "${base}.c"
190 int foo(int *i) {
191 static __thread int j = 0;
192 return *i ? j : *i;
193 }
194 EOF
195 local flags
196 case $1 in
197 -s) flags="-S";;
198 -c) flags="-c";;
199 -l) ;;
200 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
201 esac
202 : ${flags:=-fPIC -shared -Wl,-z,defs}
203 [[ $1 == -* ]] && shift
204 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
205 local ret=$?
206 rm -f "${base}"*
207 return ${ret}
208}
209
153 210
154# Parse information from CBUILD/CHOST/CTARGET rather than 211# Parse information from CBUILD/CHOST/CTARGET rather than
155# use external variables from the profile. 212# use external variables from the profile.
156tc-ninja_magic_to_arch() { 213tc-ninja_magic_to_arch() {
157ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 214ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
382 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]) 439 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
383} 440}
384 441
385 442
386# @FUNCTION: gen_usr_ldscript 443# @FUNCTION: gen_usr_ldscript
387# @USAGE: <list of libs to create linker scripts for> 444# @USAGE: [-a] <list of libs to create linker scripts for>
388# @DESCRIPTION: 445# @DESCRIPTION:
389# This function generate linker scripts in /usr/lib for dynamic 446# This function generate linker scripts in /usr/lib for dynamic
390# libs in /lib. This is to fix linking problems when you have 447# libs in /lib. This is to fix linking problems when you have
391# the .so in /lib, and the .a in /usr/lib. What happens is that 448# the .so in /lib, and the .a in /usr/lib. What happens is that
392# in some cases when linking dynamic, the .a in /usr/lib is used 449# in some cases when linking dynamic, the .a in /usr/lib is used
396# 453#
397# Note that you should in general use the unversioned name of 454# Note that you should in general use the unversioned name of
398# the library (libfoo.so), as ldconfig should usually update it 455# the library (libfoo.so), as ldconfig should usually update it
399# correctly to point to the latest version of the library present. 456# correctly to point to the latest version of the library present.
400gen_usr_ldscript() { 457gen_usr_ldscript() {
401 local lib libdir=$(get_libdir) output_format="" 458 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
459 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
460
461 tc-is-static-only && return
462
402 # Just make sure it exists 463 # Just make sure it exists
403 dodir /usr/${libdir} 464 dodir /usr/${libdir}
465
466 if [[ $1 == "-a" ]] ; then
467 auto=true
468 shift
469 dodir /${libdir}
470 fi
404 471
405 # OUTPUT_FORMAT gives hints to the linker as to what binary format 472 # OUTPUT_FORMAT gives hints to the linker as to what binary format
406 # is referenced ... makes multilib saner 473 # is referenced ... makes multilib saner
407 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 474 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} )" 475 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
409 476
410 for lib in "$@" ; do 477 for lib in "$@" ; do
411 if [[ ${USERLAND} == "Darwin" ]] ; then 478 local tlib
412 ewarn "Not creating fake dynamic library for $lib on Darwin;" 479 if ${auto} ; then
413 ewarn "making a symlink instead." 480 lib="lib${lib}${suffix}"
414 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
415 else 481 else
482 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
483 # This especially is for AIX where $(get_libname) can return ".a",
484 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
485 [[ -r ${ED}/${libdir}/${lib} ]] || continue
486 #TODO: better die here?
487 fi
488
489 case ${CTARGET:-${CHOST}} in
490 *-darwin*)
491 if ${auto} ; then
492 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
493 else
494 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
495 fi
496 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
497 tlib=${tlib##*/}
498
499 if ${auto} ; then
500 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
501 # some install_names are funky: they encode a version
502 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
503 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
504 fi
505 rm -f "${ED}"/${libdir}/${lib}
506 fi
507
508 # Mach-O files have an id, which is like a soname, it tells how
509 # another object linking against this lib should reference it.
510 # Since we moved the lib from usr/lib into lib this reference is
511 # wrong. Hence, we update it here. We don't configure with
512 # libdir=/lib because that messes up libtool files.
513 # Make sure we don't lose the specific version, so just modify the
514 # existing install_name
515 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
516 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
517 local nowrite=yes
518 fi
519 install_name_tool \
520 -id "${EPREFIX}"/${libdir}/${tlib} \
521 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
522 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
523 # Now as we don't use GNU binutils and our linker doesn't
524 # understand linker scripts, just create a symlink.
525 pushd "${ED}/usr/${libdir}" > /dev/null
526 ln -snf "../../${libdir}/${tlib}" "${lib}"
527 popd > /dev/null
528 ;;
529 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
530 if ${auto} ; then
531 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
532 # no way to retrieve soname on these platforms (?)
533 tlib=$(readlink "${ED}"/${libdir}/${lib})
534 tlib=${tlib##*/}
535 if [[ -z ${tlib} ]] ; then
536 # ok, apparently was not a symlink, don't remove it and
537 # just link to it
538 tlib=${lib}
539 else
540 rm -f "${ED}"/${libdir}/${lib}
541 fi
542 else
543 tlib=${lib}
544 fi
545
546 # we don't have GNU binutils on these platforms, so we symlink
547 # instead, which seems to work fine. Keep it relative, otherwise
548 # we break some QA checks in Portage
549 # on interix, the linker scripts would work fine in _most_
550 # situations. if a library links to such a linker script the
551 # absolute path to the correct library is inserted into the binary,
552 # which is wrong, since anybody linking _without_ libtool will miss
553 # some dependencies, since the stupid linker cannot find libraries
554 # hardcoded with absolute paths (as opposed to the loader, which
555 # seems to be able to do this).
556 # this has been seen while building shared-mime-info which needs
557 # libxml2, but links without libtool (and does not add libz to the
558 # command line by itself).
559 pushd "${ED}/usr/${libdir}" > /dev/null
560 ln -snf "../../${libdir}/${tlib}" "${lib}"
561 popd > /dev/null
562 ;;
563 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
564 if ${auto} ; then
565 tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
566 [[ -z ${tlib} ]] && tlib=${lib}
567 tlib=${tlib##*/} # 'internal name' can have a path component
568 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
569 # some SONAMEs are funky: they encode a version before the .so
570 if [[ ${tlib} != ${lib}* ]] ; then
571 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
572 fi
573 [[ ${tlib} != ${lib} ]] &&
574 rm -f "${ED}"/${libdir}/${lib}
575 else
576 tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
577 [[ -z ${tlib} ]] && tlib=${lib}
578 tlib=${tlib##*/} # 'internal name' can have a path component
579 fi
580 pushd "${ED}"/usr/${libdir} >/dev/null
581 ln -snf "../../${libdir}/${tlib}" "${lib}"
582 # need the internal name in usr/lib too, to be available at runtime
583 # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
584 [[ ${tlib} != ${lib} ]] &&
585 ln -snf "../../${libdir}/${tlib}" "${tlib}"
586 popd >/dev/null
587 ;;
588 *)
589 if ${auto} ; then
590 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
591 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
592 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
593 # some SONAMEs are funky: they encode a version before the .so
594 if [[ ${tlib} != ${lib}* ]] ; then
595 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
596 fi
597 rm -f "${ED}"/${libdir}/${lib}
598 else
599 tlib=${lib}
600 fi
416 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 601 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
417 /* GNU ld script 602 /* GNU ld script
418 Since Gentoo has critical dynamic libraries 603 Since Gentoo has critical dynamic libraries in /lib, and the static versions
419 in /lib, and the static versions in /usr/lib, 604 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, 605 run into linking problems. This "fake" dynamic lib is a linker script that
421 otherwise we run into linking problems. 606 redirects the linker to the real lib. And yes, this works in the cross-
607 compiling scenario as the sysroot-ed linker will prepend the real path.
422 608
423 See bug http://bugs.gentoo.org/4411 for more info. 609 See bug http://bugs.gentoo.org/4411 for more info.
424 */ 610 */
425 ${output_format} 611 ${output_format}
426 GROUP ( /${libdir}/${lib} ) 612 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
427 END_LDSCRIPT 613 END_LDSCRIPT
428 fi 614 ;;
615 esac
429 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 616 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
430 done 617 done
431} 618}

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