/[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 1.74 2007/08/17 10:14:13 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
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 "$@"; }
79# @FUNCTION: tc-getF90 83# @FUNCTION: tc-getFC
80# @USAGE: [toolchain prefix] 84# @USAGE: [toolchain prefix]
81# @RETURN: name of the Fortran 90 compiler 85# @RETURN: name of the Fortran 90 compiler
82tc-getF90() { tc-getPROG F90 gfortran "$@"; } 86tc-getFC() { tc-getPROG FC gfortran "$@"; }
83# @FUNCTION: tc-getFORTRAN
84# @USAGE: [toolchain prefix]
85# @RETURN: name of the Fortran compiler
86tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
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 "$@"; }
91 95
92# @FUNCTION: tc-getBUILD_CC 96# @FUNCTION: tc-getBUILD_CC
93# @USAGE: [toolchain prefix] 97# @USAGE: [toolchain prefix]
94# @RETURN: name of the C compiler for building binaries to run on the build machine 98# @RETURN: name of the C compiler for building binaries to run on the build machine
95tc-getBUILD_CC() { 99tc-getBUILD_CC() {
118# @DESCRIPTION: 122# @DESCRIPTION:
119# Quick way to export a bunch of compiler vars at once. 123# Quick way to export a bunch of compiler vars at once.
120tc-export() { 124tc-export() {
121 local var 125 local var
122 for var in "$@" ; do 126 for var in "$@" ; do
127 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
123 eval tc-get${var} > /dev/null 128 eval tc-get${var} > /dev/null
124 done 129 done
125} 130}
126 131
127# @FUNCTION: tc-is-cross-compiler 132# @FUNCTION: tc-is-cross-compiler
152 || echo "no" 157 || echo "no"
153 ;; 158 ;;
154 esac 159 esac
155} 160}
156 161
162# @FUNCTION: tc-is-static-only
163# @DESCRIPTION:
164# Return shell true if the target does not support shared libs, shell false
165# otherwise.
166tc-is-static-only() {
167 local host=${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
202
157# Parse information from CBUILD/CHOST/CTARGET rather than 203# Parse information from CBUILD/CHOST/CTARGET rather than
158# use external variables from the profile. 204# use external variables from the profile.
159tc-ninja_magic_to_arch() { 205tc-ninja_magic_to_arch() {
160ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 206ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
161 207
168 arm*) echo arm;; 214 arm*) echo arm;;
169 avr*) ninj avr32 avr;; 215 avr*) ninj avr32 avr;;
170 bfin*) ninj blackfin bfin;; 216 bfin*) ninj blackfin bfin;;
171 cris*) echo cris;; 217 cris*) echo cris;;
172 hppa*) ninj parisc hppa;; 218 hppa*) ninj parisc hppa;;
173 i?86*) ninj i386 x86;; 219 i?86*)
220 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
221 # trees have been unified into 'x86'.
222 # FreeBSD still uses i386
223 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
224 echo i386
225 else
226 echo x86
227 fi
228 ;;
174 ia64*) echo ia64;; 229 ia64*) echo ia64;;
175 m68*) echo m68k;; 230 m68*) echo m68k;;
176 mips*) echo mips;; 231 mips*) echo mips;;
177 nios2*) echo nios2;; 232 nios2*) echo nios2;;
178 nios*) echo nios;; 233 nios*) echo nios;;
203 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 258 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
204 && ninj sparc64 sparc \ 259 && ninj sparc64 sparc \
205 || echo sparc 260 || echo sparc
206 ;; 261 ;;
207 vax*) echo vax;; 262 vax*) echo vax;;
208 x86_64*) ninj x86_64 amd64;; 263 x86_64*)
264 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
265 # trees have been unified into 'x86'.
266 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
267 echo x86
268 else
269 ninj x86_64 amd64
270 fi
271 ;;
209 272
210 # since our usage of tc-arch is largely concerned with 273 # since our usage of tc-arch is largely concerned with
211 # normalizing inputs for testing ${CTARGET}, let's filter 274 # normalizing inputs for testing ${CTARGET}, let's filter
212 # other cross targets (mingw and such) into the unknown. 275 # other cross targets (mingw and such) into the unknown.
213 *) echo unknown;; 276 *) echo unknown;;
279} 342}
280 343
281# Returns the installation directory - internal toolchain 344# Returns the installation directory - internal toolchain
282# function for use by _gcc-specs-exists (for flag-o-matic). 345# function for use by _gcc-specs-exists (for flag-o-matic).
283_gcc-install-dir() { 346_gcc-install-dir() {
284 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\ 347 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
285 awk '$1=="install:" {print $2}')" 348 awk '$1=="install:" {print $2}')"
286} 349}
287# Returns true if the indicated specs file exists - internal toolchain 350# Returns true if the indicated specs file exists - internal toolchain
288# function for use by flag-o-matic. 351# function for use by flag-o-matic.
289_gcc-specs-exists() { 352_gcc-specs-exists() {
333 396
334# Returns true if gcc sets relro 397# Returns true if gcc sets relro
335gcc-specs-relro() { 398gcc-specs-relro() {
336 local directive 399 local directive
337 directive=$(gcc-specs-directive link_command) 400 directive=$(gcc-specs-directive link_command)
338 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 401 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
339} 402}
340# Returns true if gcc sets now 403# Returns true if gcc sets now
341gcc-specs-now() { 404gcc-specs-now() {
342 local directive 405 local directive
343 directive=$(gcc-specs-directive link_command) 406 directive=$(gcc-specs-directive link_command)
344 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 407 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
345} 408}
346# Returns true if gcc builds PIEs 409# Returns true if gcc builds PIEs
347gcc-specs-pie() { 410gcc-specs-pie() {
348 local directive 411 local directive
349 directive=$(gcc-specs-directive cc1) 412 directive=$(gcc-specs-directive cc1)
350 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 413 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
351} 414}
352# Returns true if gcc builds with the stack protector 415# Returns true if gcc builds with the stack protector
353gcc-specs-ssp() { 416gcc-specs-ssp() {
354 local directive 417 local directive
355 directive=$(gcc-specs-directive cc1) 418 directive=$(gcc-specs-directive cc1)
356 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 419 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
357} 420}
358# Returns true if gcc upgrades fstack-protector to fstack-protector-all 421# Returns true if gcc upgrades fstack-protector to fstack-protector-all
359gcc-specs-ssp-to-all() { 422gcc-specs-ssp-to-all() {
360 local directive 423 local directive
361 directive=$(gcc-specs-directive cc1) 424 directive=$(gcc-specs-directive cc1)
362 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 425 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
426}
427# Returns true if gcc builds with fno-strict-overflow
428gcc-specs-nostrict() {
429 local directive
430 directive=$(gcc-specs-directive cc1)
431 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
363} 432}
364 433
365 434
366# @FUNCTION: gen_usr_ldscript 435# @FUNCTION: gen_usr_ldscript
367# @USAGE: <list of libs to create linker scripts for> 436# @USAGE: [-a] <list of libs to create linker scripts for>
368# @DESCRIPTION: 437# @DESCRIPTION:
369# This function generate linker scripts in /usr/lib for dynamic 438# This function generate linker scripts in /usr/lib for dynamic
370# libs in /lib. This is to fix linking problems when you have 439# libs in /lib. This is to fix linking problems when you have
371# the .so in /lib, and the .a in /usr/lib. What happens is that 440# the .so in /lib, and the .a in /usr/lib. What happens is that
372# in some cases when linking dynamic, the .a in /usr/lib is used 441# in some cases when linking dynamic, the .a in /usr/lib is used
376# 445#
377# Note that you should in general use the unversioned name of 446# Note that you should in general use the unversioned name of
378# the library (libfoo.so), as ldconfig should usually update it 447# the library (libfoo.so), as ldconfig should usually update it
379# correctly to point to the latest version of the library present. 448# correctly to point to the latest version of the library present.
380gen_usr_ldscript() { 449gen_usr_ldscript() {
381 local lib libdir=$(get_libdir) output_format="" 450 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
451 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
452
453 tc-is-static-only && return
454
382 # Just make sure it exists 455 # Just make sure it exists
383 dodir /usr/${libdir} 456 dodir /usr/${libdir}
457
458 if [[ $1 == "-a" ]] ; then
459 auto=true
460 shift
461 dodir /${libdir}
462 fi
384 463
385 # OUTPUT_FORMAT gives hints to the linker as to what binary format 464 # OUTPUT_FORMAT gives hints to the linker as to what binary format
386 # is referenced ... makes multilib saner 465 # is referenced ... makes multilib saner
387 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')
388 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 467 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
389 468
390 for lib in "$@" ; do 469 for lib in "$@" ; do
391 if [[ ${USERLAND} == "Darwin" ]] ; then 470 local tlib
392 ewarn "Not creating fake dynamic library for $lib on Darwin;" 471 if ${auto} ; then
393 ewarn "making a symlink instead." 472 lib="lib${lib}${suffix}"
394 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
395 else 473 else
474 # Ensure /lib/${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*)
483 if ${auto} ; then
484 tlib=$(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 ${auto} ; then
523 mv "${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
561 # some SONAMEs are funky: they encode a version before the .so
562 if [[ ${tlib} != ${lib}* ]] ; then
563 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
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})
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
589 rm -f "${ED}"/${libdir}/${lib}
590 else
591 tlib=${lib}
592 fi
396 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 593 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
397 /* GNU ld script 594 /* GNU ld script
398 Since Gentoo has critical dynamic libraries 595 Since Gentoo has critical dynamic libraries in /lib, and the static versions
399 in /lib, and the static versions in /usr/lib, 596 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
400 we need to have a "fake" dynamic lib in /usr/lib, 597 run into linking problems. This "fake" dynamic lib is a linker script that
401 otherwise we run into linking problems. 598 redirects the linker to the real lib. And yes, this works in the cross-
599 compiling scenario as the sysroot-ed linker will prepend the real path.
402 600
403 See bug http://bugs.gentoo.org/4411 for more info. 601 See bug http://bugs.gentoo.org/4411 for more info.
404 */ 602 */
405 ${output_format} 603 ${output_format}
406 GROUP ( /${libdir}/${lib} ) 604 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
407 END_LDSCRIPT 605 END_LDSCRIPT
408 fi 606 ;;
607 esac
409 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 608 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
410 done 609 done
411} 610}

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