/[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 1.90 2009/04/05 07:50:08 grobian Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.102 2010/09/11 17:12:20 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
77# @RETURN: name of the object copier 77# @RETURN: name of the object copier
78tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; } 78tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
79# @FUNCTION: tc-getF77 79# @FUNCTION: tc-getF77
80# @USAGE: [toolchain prefix] 80# @USAGE: [toolchain prefix]
81# @RETURN: name of the Fortran 77 compiler 81# @RETURN: name of the Fortran 77 compiler
82tc-getF77() { tc-getPROG F77 f77 "$@"; } 82tc-getF77() { tc-getPROG F77 gfortran "$@"; }
83# @FUNCTION: tc-getFC 83# @FUNCTION: tc-getFC
84# @USAGE: [toolchain prefix] 84# @USAGE: [toolchain prefix]
85# @RETURN: name of the Fortran 90 compiler 85# @RETURN: name of the Fortran 90 compiler
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 "$@"; }
95# @FUNCTION: tc-getRC
96# @USAGE: [toolchain prefix]
97# @RETURN: name of the Windows resource compiler
98tc-getRC() { tc-getPROG RC windres "$@"; }
99# @FUNCTION: tc-getDLLWRAP
100# @USAGE: [toolchain prefix]
101# @RETURN: name of the Windows dllwrap utility
102tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
91 103
92# @FUNCTION: tc-getBUILD_CC 104# @FUNCTION: tc-getBUILD_CC
93# @USAGE: [toolchain prefix] 105# @USAGE: [toolchain prefix]
94# @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
95tc-getBUILD_CC() { 107tc-getBUILD_CC() {
136# See if this toolchain is a softfloat based one. 148# See if this toolchain is a softfloat based one.
137# @CODE 149# @CODE
138# The possible return values: 150# The possible return values:
139# - only: the target is always softfloat (never had fpu) 151# - only: the target is always softfloat (never had fpu)
140# - yes: the target should support softfloat 152# - yes: the target should support softfloat
141# - no: the target should support hardfloat 153# - no: the target doesn't support softfloat
142# @CODE 154# @CODE
143# This allows us to react differently where packages accept 155# This allows us to react differently where packages accept
144# softfloat flags in the case where support is optional, but 156# softfloat flags in the case where support is optional, but
145# rejects softfloat flags where the target always lacks an fpu. 157# rejects softfloat flags where the target always lacks an fpu.
146tc-is-softfloat() { 158tc-is-softfloat() {
152 && echo "yes" \ 164 && echo "yes" \
153 || echo "no" 165 || echo "no"
154 ;; 166 ;;
155 esac 167 esac
156} 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
157 247
158# Parse information from CBUILD/CHOST/CTARGET rather than 248# Parse information from CBUILD/CHOST/CTARGET rather than
159# use external variables from the profile. 249# use external variables from the profile.
160tc-ninja_magic_to_arch() { 250tc-ninja_magic_to_arch() {
161ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 251ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
268 x86_64*) echo little;; 358 x86_64*) echo little;;
269 *) echo wtf;; 359 *) echo wtf;;
270 esac 360 esac
271} 361}
272 362
363# Internal func. The first argument is the version info to expand.
364# Query the preprocessor to improve compatibility across different
365# compilers rather than maintaining a --version flag matrix. #335943
366_gcc_fullversion() {
367 local ver="$1"; shift
368 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
369 eval echo "$ver"
370}
371
273# @FUNCTION: gcc-fullversion 372# @FUNCTION: gcc-fullversion
274# @RETURN: compiler version (major.minor.micro: [3.4.6]) 373# @RETURN: compiler version (major.minor.micro: [3.4.6])
275gcc-fullversion() { 374gcc-fullversion() {
276 $(tc-getCC "$@") -dumpversion 375 _gcc_fullversion '$1.$2.$3' "$@"
277} 376}
278# @FUNCTION: gcc-version 377# @FUNCTION: gcc-version
279# @RETURN: compiler version (major.minor: [3.4].6) 378# @RETURN: compiler version (major.minor: [3.4].6)
280gcc-version() { 379gcc-version() {
281 gcc-fullversion "$@" | cut -f1,2 -d. 380 _gcc_fullversion '$1.$2' "$@"
282} 381}
283# @FUNCTION: gcc-major-version 382# @FUNCTION: gcc-major-version
284# @RETURN: major compiler version (major: [3].4.6) 383# @RETURN: major compiler version (major: [3].4.6)
285gcc-major-version() { 384gcc-major-version() {
286 gcc-version "$@" | cut -f1 -d. 385 _gcc_fullversion '$1' "$@"
287} 386}
288# @FUNCTION: gcc-minor-version 387# @FUNCTION: gcc-minor-version
289# @RETURN: minor compiler version (minor: 3.[4].6) 388# @RETURN: minor compiler version (minor: 3.[4].6)
290gcc-minor-version() { 389gcc-minor-version() {
291 gcc-version "$@" | cut -f2 -d. 390 _gcc_fullversion '$2' "$@"
292} 391}
293# @FUNCTION: gcc-micro-version 392# @FUNCTION: gcc-micro-version
294# @RETURN: micro compiler version (micro: 3.4.[6]) 393# @RETURN: micro compiler version (micro: 3.4.[6])
295gcc-micro-version() { 394gcc-micro-version() {
296 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- 395 _gcc_fullversion '$3' "$@"
297} 396}
298 397
299# Returns the installation directory - internal toolchain 398# Returns the installation directory - internal toolchain
300# function for use by _gcc-specs-exists (for flag-o-matic). 399# function for use by _gcc-specs-exists (for flag-o-matic).
301_gcc-install-dir() { 400_gcc-install-dir() {
401# Note that you should in general use the unversioned name of 500# Note that you should in general use the unversioned name of
402# the library (libfoo.so), as ldconfig should usually update it 501# the library (libfoo.so), as ldconfig should usually update it
403# correctly to point to the latest version of the library present. 502# correctly to point to the latest version of the library present.
404gen_usr_ldscript() { 503gen_usr_ldscript() {
405 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname) 504 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
505 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
506
507 tc-is-static-only && return
508
406 # Just make sure it exists 509 # Just make sure it exists
407 dodir /usr/${libdir} 510 dodir /usr/${libdir}
408 511
409 if [[ $1 == "-a" ]] ; then 512 if [[ $1 == "-a" ]] ; then
410 auto=true 513 auto=true
416 # is referenced ... makes multilib saner 519 # is referenced ... makes multilib saner
417 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 520 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} )" 521 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
419 522
420 for lib in "$@" ; do 523 for lib in "$@" ; do
421 if [[ ${USERLAND} == "Darwin" ]] ; then 524 local tlib
422 ewarn "Not creating fake dynamic library for $lib on Darwin;" 525 if ${auto} ; then
423 ewarn "making a symlink instead." 526 lib="lib${lib}${suffix}"
424 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
425 else 527 else
426 local tlib 528 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
529 # This especially is for AIX where $(get_libname) can return ".a",
530 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
531 [[ -r ${ED}/${libdir}/${lib} ]] || continue
532 #TODO: better die here?
533 fi
534
535 case ${CTARGET:-${CHOST}} in
536 *-darwin*)
427 if ${auto} ; then 537 if ${auto} ; then
428 lib="lib${lib}${suffix}"
429 tlib=$(scanelf -qF'%S#F' "${D}"/usr/${libdir}/${lib}) 538 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
539 else
540 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
541 fi
542 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
543 tlib=${tlib##*/}
544
545 if ${auto} ; then
546 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
547 # some install_names are funky: they encode a version
548 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
549 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
550 fi
551 rm -f "${ED}"/${libdir}/${lib}
552 fi
553
554 # Mach-O files have an id, which is like a soname, it tells how
555 # another object linking against this lib should reference it.
556 # Since we moved the lib from usr/lib into lib this reference is
557 # wrong. Hence, we update it here. We don't configure with
558 # libdir=/lib because that messes up libtool files.
559 # Make sure we don't lose the specific version, so just modify the
560 # existing install_name
561 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
562 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
563 local nowrite=yes
564 fi
565 install_name_tool \
566 -id "${EPREFIX}"/${libdir}/${tlib} \
567 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
568 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
569 # Now as we don't use GNU binutils and our linker doesn't
570 # understand linker scripts, just create a symlink.
571 pushd "${ED}/usr/${libdir}" > /dev/null
572 ln -snf "../../${libdir}/${tlib}" "${lib}"
573 popd > /dev/null
574 ;;
575 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
576 if ${auto} ; then
430 mv "${D}"/usr/${libdir}/${lib}* "${D}"/${libdir}/ || die 577 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
578 # no way to retrieve soname on these platforms (?)
579 tlib=$(readlink "${ED}"/${libdir}/${lib})
580 tlib=${tlib##*/}
581 if [[ -z ${tlib} ]] ; then
582 # ok, apparently was not a symlink, don't remove it and
583 # just link to it
584 tlib=${lib}
585 else
586 rm -f "${ED}"/${libdir}/${lib}
587 fi
588 else
589 tlib=${lib}
590 fi
591
592 # we don't have GNU binutils on these platforms, so we symlink
593 # instead, which seems to work fine. Keep it relative, otherwise
594 # we break some QA checks in Portage
595 # on interix, the linker scripts would work fine in _most_
596 # situations. if a library links to such a linker script the
597 # absolute path to the correct library is inserted into the binary,
598 # which is wrong, since anybody linking _without_ libtool will miss
599 # some dependencies, since the stupid linker cannot find libraries
600 # hardcoded with absolute paths (as opposed to the loader, which
601 # seems to be able to do this).
602 # this has been seen while building shared-mime-info which needs
603 # libxml2, but links without libtool (and does not add libz to the
604 # command line by itself).
605 pushd "${ED}/usr/${libdir}" > /dev/null
606 ln -snf "../../${libdir}/${tlib}" "${lib}"
607 popd > /dev/null
608 ;;
609 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
610 if ${auto} ; then
611 tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
612 [[ -z ${tlib} ]] && tlib=${lib}
613 tlib=${tlib##*/} # 'internal name' can have a path component
614 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
431 # some SONAMEs are funky: they encode a version before the .so 615 # some SONAMEs are funky: they encode a version before the .so
432 if [[ ${tlib} != ${lib}* ]] ; then 616 if [[ ${tlib} != ${lib}* ]] ; then
433 mv "${D}"/usr/${libdir}/${tlib}* "${D}"/${libdir}/ || die 617 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
434 fi 618 fi
619 [[ ${tlib} != ${lib} ]] &&
620 rm -f "${ED}"/${libdir}/${lib}
621 else
622 tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
623 [[ -z ${tlib} ]] && tlib=${lib}
624 tlib=${tlib##*/} # 'internal name' can have a path component
625 fi
626 pushd "${ED}"/usr/${libdir} >/dev/null
627 ln -snf "../../${libdir}/${tlib}" "${lib}"
628 # need the internal name in usr/lib too, to be available at runtime
629 # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
630 [[ ${tlib} != ${lib} ]] &&
631 ln -snf "../../${libdir}/${tlib}" "${tlib}"
632 popd >/dev/null
633 ;;
634 *)
635 if ${auto} ; then
636 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
435 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}" 637 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
638 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
639 # some SONAMEs are funky: they encode a version before the .so
640 if [[ ${tlib} != ${lib}* ]] ; then
641 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
642 fi
436 rm -f "${D}"/${libdir}/${lib} 643 rm -f "${ED}"/${libdir}/${lib}
437 else 644 else
438 tlib=${lib} 645 tlib=${lib}
439 fi 646 fi
440 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 647 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
441 /* GNU ld script 648 /* GNU ld script
442 Since Gentoo has critical dynamic libraries in /lib, and the static versions 649 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 650 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 651 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- 652 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. 653 compiling scenario as the sysroot-ed linker will prepend the real path.
447 654
448 See bug http://bugs.gentoo.org/4411 for more info. 655 See bug http://bugs.gentoo.org/4411 for more info.
449 */ 656 */
450 ${output_format} 657 ${output_format}
451 GROUP ( /${libdir}/${tlib} ) 658 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
452 END_LDSCRIPT 659 END_LDSCRIPT
660 ;;
661 esac
453 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 662 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
454 fi
455 done 663 done
456} 664}

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