/[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 1.78 2008/07/03 05:26:47 dberkholz Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.99 2010/04/22 18:28:11 armin76 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() {
114# @DESCRIPTION: 130# @DESCRIPTION:
115# Quick way to export a bunch of compiler vars at once. 131# Quick way to export a bunch of compiler vars at once.
116tc-export() { 132tc-export() {
117 local var 133 local var
118 for var in "$@" ; do 134 for var in "$@" ; do
135 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
119 eval tc-get${var} > /dev/null 136 eval tc-get${var} > /dev/null
120 done 137 done
121} 138}
122 139
123# @FUNCTION: tc-is-cross-compiler 140# @FUNCTION: tc-is-cross-compiler
131# See if this toolchain is a softfloat based one. 148# See if this toolchain is a softfloat based one.
132# @CODE 149# @CODE
133# The possible return values: 150# The possible return values:
134# - only: the target is always softfloat (never had fpu) 151# - only: the target is always softfloat (never had fpu)
135# - yes: the target should support softfloat 152# - yes: the target should support softfloat
136# - no: the target should support hardfloat 153# - no: the target doesn't support softfloat
137# @CODE 154# @CODE
138# This allows us to react differently where packages accept 155# This allows us to react differently where packages accept
139# softfloat flags in the case where support is optional, but 156# softfloat flags in the case where support is optional, but
140# rejects softfloat flags where the target always lacks an fpu. 157# rejects softfloat flags where the target always lacks an fpu.
141tc-is-softfloat() { 158tc-is-softfloat() {
147 && echo "yes" \ 164 && echo "yes" \
148 || echo "no" 165 || echo "no"
149 ;; 166 ;;
150 esac 167 esac
151} 168}
169
170# @FUNCTION: tc-is-hardfloat
171# @DESCRIPTION:
172# See if this toolchain is a hardfloat based one.
173# @CODE
174# The possible return values:
175# - yes: the target should support hardfloat
176# - no: the target doesn't support hardfloat
177tc-is-hardfloat() {
178 [[ ${CTARGET//_/-} == *-hardfloat-* ]] \
179 && echo "yes" \
180 || echo "no"
181}
182
183# @FUNCTION: tc-is-static-only
184# @DESCRIPTION:
185# Return shell true if the target does not support shared libs, shell false
186# otherwise.
187tc-is-static-only() {
188 local host=${CTARGET:-${CHOST}}
189
190 # *MiNT doesn't have shared libraries, only platform so far
191 return $([[ ${host} == *-mint* ]])
192}
193
194# @FUNCTION: tc-has-tls
195# @USAGE: [-s|-c|-l] [toolchain prefix]
196# @DESCRIPTION:
197# See if the toolchain supports thread local storage (TLS). Use -s to test the
198# compiler, -c to also test the assembler, and -l to also test the C library
199# (the default).
200tc-has-tls() {
201 local base="${T}/test-tc-tls"
202 cat <<-EOF > "${base}.c"
203 int foo(int *i) {
204 static __thread int j = 0;
205 return *i ? j : *i;
206 }
207 EOF
208 local flags
209 case $1 in
210 -s) flags="-S";;
211 -c) flags="-c";;
212 -l) ;;
213 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
214 esac
215 : ${flags:=-fPIC -shared -Wl,-z,defs}
216 [[ $1 == -* ]] && shift
217 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
218 local ret=$?
219 rm -f "${base}"*
220 return ${ret}
221}
222
152 223
153# Parse information from CBUILD/CHOST/CTARGET rather than 224# Parse information from CBUILD/CHOST/CTARGET rather than
154# use external variables from the profile. 225# use external variables from the profile.
155tc-ninja_magic_to_arch() { 226tc-ninja_magic_to_arch() {
156ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 227ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
346 417
347# Returns true if gcc sets relro 418# Returns true if gcc sets relro
348gcc-specs-relro() { 419gcc-specs-relro() {
349 local directive 420 local directive
350 directive=$(gcc-specs-directive link_command) 421 directive=$(gcc-specs-directive link_command)
351 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 422 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
352} 423}
353# Returns true if gcc sets now 424# Returns true if gcc sets now
354gcc-specs-now() { 425gcc-specs-now() {
355 local directive 426 local directive
356 directive=$(gcc-specs-directive link_command) 427 directive=$(gcc-specs-directive link_command)
357 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 428 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
358} 429}
359# Returns true if gcc builds PIEs 430# Returns true if gcc builds PIEs
360gcc-specs-pie() { 431gcc-specs-pie() {
361 local directive 432 local directive
362 directive=$(gcc-specs-directive cc1) 433 directive=$(gcc-specs-directive cc1)
363 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 434 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
364} 435}
365# Returns true if gcc builds with the stack protector 436# Returns true if gcc builds with the stack protector
366gcc-specs-ssp() { 437gcc-specs-ssp() {
367 local directive 438 local directive
368 directive=$(gcc-specs-directive cc1) 439 directive=$(gcc-specs-directive cc1)
369 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 440 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
370} 441}
371# Returns true if gcc upgrades fstack-protector to fstack-protector-all 442# Returns true if gcc upgrades fstack-protector to fstack-protector-all
372gcc-specs-ssp-to-all() { 443gcc-specs-ssp-to-all() {
373 local directive 444 local directive
374 directive=$(gcc-specs-directive cc1) 445 directive=$(gcc-specs-directive cc1)
375 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 446 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
447}
448# Returns true if gcc builds with fno-strict-overflow
449gcc-specs-nostrict() {
450 local directive
451 directive=$(gcc-specs-directive cc1)
452 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
376} 453}
377 454
378 455
379# @FUNCTION: gen_usr_ldscript 456# @FUNCTION: gen_usr_ldscript
380# @USAGE: <list of libs to create linker scripts for> 457# @USAGE: [-a] <list of libs to create linker scripts for>
381# @DESCRIPTION: 458# @DESCRIPTION:
382# This function generate linker scripts in /usr/lib for dynamic 459# This function generate linker scripts in /usr/lib for dynamic
383# libs in /lib. This is to fix linking problems when you have 460# libs in /lib. This is to fix linking problems when you have
384# the .so in /lib, and the .a in /usr/lib. What happens is that 461# the .so in /lib, and the .a in /usr/lib. What happens is that
385# in some cases when linking dynamic, the .a in /usr/lib is used 462# in some cases when linking dynamic, the .a in /usr/lib is used
389# 466#
390# Note that you should in general use the unversioned name of 467# Note that you should in general use the unversioned name of
391# the library (libfoo.so), as ldconfig should usually update it 468# the library (libfoo.so), as ldconfig should usually update it
392# correctly to point to the latest version of the library present. 469# correctly to point to the latest version of the library present.
393gen_usr_ldscript() { 470gen_usr_ldscript() {
394 local lib libdir=$(get_libdir) output_format="" 471 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
472 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
473
474 tc-is-static-only && return
475
395 # Just make sure it exists 476 # Just make sure it exists
396 dodir /usr/${libdir} 477 dodir /usr/${libdir}
478
479 if [[ $1 == "-a" ]] ; then
480 auto=true
481 shift
482 dodir /${libdir}
483 fi
397 484
398 # OUTPUT_FORMAT gives hints to the linker as to what binary format 485 # OUTPUT_FORMAT gives hints to the linker as to what binary format
399 # is referenced ... makes multilib saner 486 # is referenced ... makes multilib saner
400 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 487 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
401 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 488 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
402 489
403 for lib in "$@" ; do 490 for lib in "$@" ; do
404 if [[ ${USERLAND} == "Darwin" ]] ; then 491 local tlib
405 ewarn "Not creating fake dynamic library for $lib on Darwin;" 492 if ${auto} ; then
406 ewarn "making a symlink instead." 493 lib="lib${lib}${suffix}"
407 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
408 else 494 else
495 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
496 # This especially is for AIX where $(get_libname) can return ".a",
497 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
498 [[ -r ${ED}/${libdir}/${lib} ]] || continue
499 #TODO: better die here?
500 fi
501
502 case ${CTARGET:-${CHOST}} in
503 *-darwin*)
504 if ${auto} ; then
505 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
506 else
507 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
508 fi
509 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
510 tlib=${tlib##*/}
511
512 if ${auto} ; then
513 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
514 # some install_names are funky: they encode a version
515 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
516 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
517 fi
518 rm -f "${ED}"/${libdir}/${lib}
519 fi
520
521 # Mach-O files have an id, which is like a soname, it tells how
522 # another object linking against this lib should reference it.
523 # Since we moved the lib from usr/lib into lib this reference is
524 # wrong. Hence, we update it here. We don't configure with
525 # libdir=/lib because that messes up libtool files.
526 # Make sure we don't lose the specific version, so just modify the
527 # existing install_name
528 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
529 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
530 local nowrite=yes
531 fi
532 install_name_tool \
533 -id "${EPREFIX}"/${libdir}/${tlib} \
534 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
535 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
536 # Now as we don't use GNU binutils and our linker doesn't
537 # understand linker scripts, just create a symlink.
538 pushd "${ED}/usr/${libdir}" > /dev/null
539 ln -snf "../../${libdir}/${tlib}" "${lib}"
540 popd > /dev/null
541 ;;
542 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
543 if ${auto} ; then
544 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
545 # no way to retrieve soname on these platforms (?)
546 tlib=$(readlink "${ED}"/${libdir}/${lib})
547 tlib=${tlib##*/}
548 if [[ -z ${tlib} ]] ; then
549 # ok, apparently was not a symlink, don't remove it and
550 # just link to it
551 tlib=${lib}
552 else
553 rm -f "${ED}"/${libdir}/${lib}
554 fi
555 else
556 tlib=${lib}
557 fi
558
559 # we don't have GNU binutils on these platforms, so we symlink
560 # instead, which seems to work fine. Keep it relative, otherwise
561 # we break some QA checks in Portage
562 # on interix, the linker scripts would work fine in _most_
563 # situations. if a library links to such a linker script the
564 # absolute path to the correct library is inserted into the binary,
565 # which is wrong, since anybody linking _without_ libtool will miss
566 # some dependencies, since the stupid linker cannot find libraries
567 # hardcoded with absolute paths (as opposed to the loader, which
568 # seems to be able to do this).
569 # this has been seen while building shared-mime-info which needs
570 # libxml2, but links without libtool (and does not add libz to the
571 # command line by itself).
572 pushd "${ED}/usr/${libdir}" > /dev/null
573 ln -snf "../../${libdir}/${tlib}" "${lib}"
574 popd > /dev/null
575 ;;
576 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
577 if ${auto} ; then
578 tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
579 [[ -z ${tlib} ]] && tlib=${lib}
580 tlib=${tlib##*/} # 'internal name' can have a path component
581 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
582 # some SONAMEs are funky: they encode a version before the .so
583 if [[ ${tlib} != ${lib}* ]] ; then
584 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
585 fi
586 [[ ${tlib} != ${lib} ]] &&
587 rm -f "${ED}"/${libdir}/${lib}
588 else
589 tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
590 [[ -z ${tlib} ]] && tlib=${lib}
591 tlib=${tlib##*/} # 'internal name' can have a path component
592 fi
593 pushd "${ED}"/usr/${libdir} >/dev/null
594 ln -snf "../../${libdir}/${tlib}" "${lib}"
595 # need the internal name in usr/lib too, to be available at runtime
596 # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
597 [[ ${tlib} != ${lib} ]] &&
598 ln -snf "../../${libdir}/${tlib}" "${tlib}"
599 popd >/dev/null
600 ;;
601 *)
602 if ${auto} ; then
603 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
604 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
605 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
606 # some SONAMEs are funky: they encode a version before the .so
607 if [[ ${tlib} != ${lib}* ]] ; then
608 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
609 fi
610 rm -f "${ED}"/${libdir}/${lib}
611 else
612 tlib=${lib}
613 fi
409 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 614 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
410 /* GNU ld script 615 /* GNU ld script
411 Since Gentoo has critical dynamic libraries 616 Since Gentoo has critical dynamic libraries in /lib, and the static versions
412 in /lib, and the static versions in /usr/lib, 617 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
413 we need to have a "fake" dynamic lib in /usr/lib, 618 run into linking problems. This "fake" dynamic lib is a linker script that
414 otherwise we run into linking problems. 619 redirects the linker to the real lib. And yes, this works in the cross-
620 compiling scenario as the sysroot-ed linker will prepend the real path.
415 621
416 See bug http://bugs.gentoo.org/4411 for more info. 622 See bug http://bugs.gentoo.org/4411 for more info.
417 */ 623 */
418 ${output_format} 624 ${output_format}
419 GROUP ( /${libdir}/${lib} ) 625 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
420 END_LDSCRIPT 626 END_LDSCRIPT
421 fi 627 ;;
628 esac
422 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 629 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
423 done 630 done
424} 631}

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