/[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 1.101 2010/08/20 15:04:11 dberkholz 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 gfortran "$@"; }
79# @FUNCTION: tc-getFC 83# @FUNCTION: tc-getFC
80# @USAGE: [toolchain prefix] 84# @USAGE: [toolchain prefix]
81# @RETURN: name of the Fortran 90 compiler 85# @RETURN: name of the Fortran 90 compiler
82tc-getFC() { tc-getPROG FC gfortran "$@"; } 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() {
132# See if this toolchain is a softfloat based one. 148# See if this toolchain is a softfloat based one.
133# @CODE 149# @CODE
134# The possible return values: 150# The possible return values:
135# - only: the target is always softfloat (never had fpu) 151# - only: the target is always softfloat (never had fpu)
136# - yes: the target should support softfloat 152# - yes: the target should support softfloat
137# - no: the target should support hardfloat 153# - no: the target doesn't support softfloat
138# @CODE 154# @CODE
139# This allows us to react differently where packages accept 155# This allows us to react differently where packages accept
140# softfloat flags in the case where support is optional, but 156# softfloat flags in the case where support is optional, but
141# rejects softfloat flags where the target always lacks an fpu. 157# rejects softfloat flags where the target always lacks an fpu.
142tc-is-softfloat() { 158tc-is-softfloat() {
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-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 $([[ ${host} == *-mint* ]])
192}
193
194# @FUNCTION: tc-has-openmp
195# @USAGE: [toolchain prefix]
196# @DESCRIPTION:
197# See if the toolchain supports OpenMP.
198tc-has-openmp() {
199 local base="${T}/test-tc-openmp"
200 cat <<-EOF > "${base}.c"
201 #include <omp.h>
202 int main() {
203 int nthreads, tid, ret = 0;
204 #pragma omp parallel private(nthreads, tid)
205 {
206 tid = omp_get_thread_num();
207 nthreads = omp_get_num_threads(); ret += tid + nthreads;
208 }
209 return ret;
210 }
211 EOF
212 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
213 local ret=$?
214 rm -f "${base}"*
215 return ${ret}
216}
217
218# @FUNCTION: tc-has-tls
219# @USAGE: [-s|-c|-l] [toolchain prefix]
220# @DESCRIPTION:
221# See if the toolchain supports thread local storage (TLS). Use -s to test the
222# compiler, -c to also test the assembler, and -l to also test the C library
223# (the default).
224tc-has-tls() {
225 local base="${T}/test-tc-tls"
226 cat <<-EOF > "${base}.c"
227 int foo(int *i) {
228 static __thread int j = 0;
229 return *i ? j : *i;
230 }
231 EOF
232 local flags
233 case $1 in
234 -s) flags="-S";;
235 -c) flags="-c";;
236 -l) ;;
237 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
238 esac
239 : ${flags:=-fPIC -shared -Wl,-z,defs}
240 [[ $1 == -* ]] && shift
241 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
242 local ret=$?
243 rm -f "${base}"*
244 return ${ret}
245}
246
153 247
154# Parse information from CBUILD/CHOST/CTARGET rather than 248# Parse information from CBUILD/CHOST/CTARGET rather than
155# use external variables from the profile. 249# use external variables from the profile.
156tc-ninja_magic_to_arch() { 250tc-ninja_magic_to_arch() {
157ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 251ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
382 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]) 476 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
383} 477}
384 478
385 479
386# @FUNCTION: gen_usr_ldscript 480# @FUNCTION: gen_usr_ldscript
387# @USAGE: <list of libs to create linker scripts for> 481# @USAGE: [-a] <list of libs to create linker scripts for>
388# @DESCRIPTION: 482# @DESCRIPTION:
389# This function generate linker scripts in /usr/lib for dynamic 483# This function generate linker scripts in /usr/lib for dynamic
390# libs in /lib. This is to fix linking problems when you have 484# libs in /lib. This is to fix linking problems when you have
391# the .so in /lib, and the .a in /usr/lib. What happens is that 485# the .so in /lib, and the .a in /usr/lib. What happens is that
392# in some cases when linking dynamic, the .a in /usr/lib is used 486# in some cases when linking dynamic, the .a in /usr/lib is used
396# 490#
397# Note that you should in general use the unversioned name of 491# Note that you should in general use the unversioned name of
398# the library (libfoo.so), as ldconfig should usually update it 492# the library (libfoo.so), as ldconfig should usually update it
399# correctly to point to the latest version of the library present. 493# correctly to point to the latest version of the library present.
400gen_usr_ldscript() { 494gen_usr_ldscript() {
401 local lib libdir=$(get_libdir) output_format="" 495 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
496 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
497
498 tc-is-static-only && return
499
402 # Just make sure it exists 500 # Just make sure it exists
403 dodir /usr/${libdir} 501 dodir /usr/${libdir}
502
503 if [[ $1 == "-a" ]] ; then
504 auto=true
505 shift
506 dodir /${libdir}
507 fi
404 508
405 # OUTPUT_FORMAT gives hints to the linker as to what binary format 509 # OUTPUT_FORMAT gives hints to the linker as to what binary format
406 # is referenced ... makes multilib saner 510 # is referenced ... makes multilib saner
407 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 511 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} )" 512 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
409 513
410 for lib in "$@" ; do 514 for lib in "$@" ; do
411 if [[ ${USERLAND} == "Darwin" ]] ; then 515 local tlib
412 ewarn "Not creating fake dynamic library for $lib on Darwin;" 516 if ${auto} ; then
413 ewarn "making a symlink instead." 517 lib="lib${lib}${suffix}"
414 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
415 else 518 else
519 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
520 # This especially is for AIX where $(get_libname) can return ".a",
521 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
522 [[ -r ${ED}/${libdir}/${lib} ]] || continue
523 #TODO: better die here?
524 fi
525
526 case ${CTARGET:-${CHOST}} in
527 *-darwin*)
528 if ${auto} ; then
529 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
530 else
531 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
532 fi
533 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
534 tlib=${tlib##*/}
535
536 if ${auto} ; then
537 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
538 # some install_names are funky: they encode a version
539 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
540 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
541 fi
542 rm -f "${ED}"/${libdir}/${lib}
543 fi
544
545 # Mach-O files have an id, which is like a soname, it tells how
546 # another object linking against this lib should reference it.
547 # Since we moved the lib from usr/lib into lib this reference is
548 # wrong. Hence, we update it here. We don't configure with
549 # libdir=/lib because that messes up libtool files.
550 # Make sure we don't lose the specific version, so just modify the
551 # existing install_name
552 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
553 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
554 local nowrite=yes
555 fi
556 install_name_tool \
557 -id "${EPREFIX}"/${libdir}/${tlib} \
558 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
559 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
560 # Now as we don't use GNU binutils and our linker doesn't
561 # understand linker scripts, just create a symlink.
562 pushd "${ED}/usr/${libdir}" > /dev/null
563 ln -snf "../../${libdir}/${tlib}" "${lib}"
564 popd > /dev/null
565 ;;
566 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
567 if ${auto} ; then
568 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
569 # no way to retrieve soname on these platforms (?)
570 tlib=$(readlink "${ED}"/${libdir}/${lib})
571 tlib=${tlib##*/}
572 if [[ -z ${tlib} ]] ; then
573 # ok, apparently was not a symlink, don't remove it and
574 # just link to it
575 tlib=${lib}
576 else
577 rm -f "${ED}"/${libdir}/${lib}
578 fi
579 else
580 tlib=${lib}
581 fi
582
583 # we don't have GNU binutils on these platforms, so we symlink
584 # instead, which seems to work fine. Keep it relative, otherwise
585 # we break some QA checks in Portage
586 # on interix, the linker scripts would work fine in _most_
587 # situations. if a library links to such a linker script the
588 # absolute path to the correct library is inserted into the binary,
589 # which is wrong, since anybody linking _without_ libtool will miss
590 # some dependencies, since the stupid linker cannot find libraries
591 # hardcoded with absolute paths (as opposed to the loader, which
592 # seems to be able to do this).
593 # this has been seen while building shared-mime-info which needs
594 # libxml2, but links without libtool (and does not add libz to the
595 # command line by itself).
596 pushd "${ED}/usr/${libdir}" > /dev/null
597 ln -snf "../../${libdir}/${tlib}" "${lib}"
598 popd > /dev/null
599 ;;
600 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
601 if ${auto} ; then
602 tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
603 [[ -z ${tlib} ]] && tlib=${lib}
604 tlib=${tlib##*/} # 'internal name' can have a path component
605 mv "${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 [[ ${tlib} != ${lib} ]] &&
611 rm -f "${ED}"/${libdir}/${lib}
612 else
613 tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
614 [[ -z ${tlib} ]] && tlib=${lib}
615 tlib=${tlib##*/} # 'internal name' can have a path component
616 fi
617 pushd "${ED}"/usr/${libdir} >/dev/null
618 ln -snf "../../${libdir}/${tlib}" "${lib}"
619 # need the internal name in usr/lib too, to be available at runtime
620 # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
621 [[ ${tlib} != ${lib} ]] &&
622 ln -snf "../../${libdir}/${tlib}" "${tlib}"
623 popd >/dev/null
624 ;;
625 *)
626 if ${auto} ; then
627 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
628 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
629 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
630 # some SONAMEs are funky: they encode a version before the .so
631 if [[ ${tlib} != ${lib}* ]] ; then
632 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
633 fi
634 rm -f "${ED}"/${libdir}/${lib}
635 else
636 tlib=${lib}
637 fi
416 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 638 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
417 /* GNU ld script 639 /* GNU ld script
418 Since Gentoo has critical dynamic libraries 640 Since Gentoo has critical dynamic libraries in /lib, and the static versions
419 in /lib, and the static versions in /usr/lib, 641 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, 642 run into linking problems. This "fake" dynamic lib is a linker script that
421 otherwise we run into linking problems. 643 redirects the linker to the real lib. And yes, this works in the cross-
644 compiling scenario as the sysroot-ed linker will prepend the real path.
422 645
423 See bug http://bugs.gentoo.org/4411 for more info. 646 See bug http://bugs.gentoo.org/4411 for more info.
424 */ 647 */
425 ${output_format} 648 ${output_format}
426 GROUP ( /${libdir}/${lib} ) 649 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
427 END_LDSCRIPT 650 END_LDSCRIPT
428 fi 651 ;;
652 esac
429 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 653 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
430 done 654 done
431} 655}

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