/[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 1.81 2009/01/08 03:46:06 gengor Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.90 2009/04/05 07:50:08 grobian 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 "$@"; }
79# @FUNCTION: tc-getFC 83# @FUNCTION: tc-getFC
347 351
348# Returns true if gcc sets relro 352# Returns true if gcc sets relro
349gcc-specs-relro() { 353gcc-specs-relro() {
350 local directive 354 local directive
351 directive=$(gcc-specs-directive link_command) 355 directive=$(gcc-specs-directive link_command)
352 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 356 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
353} 357}
354# Returns true if gcc sets now 358# Returns true if gcc sets now
355gcc-specs-now() { 359gcc-specs-now() {
356 local directive 360 local directive
357 directive=$(gcc-specs-directive link_command) 361 directive=$(gcc-specs-directive link_command)
358 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 362 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
359} 363}
360# Returns true if gcc builds PIEs 364# Returns true if gcc builds PIEs
361gcc-specs-pie() { 365gcc-specs-pie() {
362 local directive 366 local directive
363 directive=$(gcc-specs-directive cc1) 367 directive=$(gcc-specs-directive cc1)
364 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 368 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
365} 369}
366# Returns true if gcc builds with the stack protector 370# Returns true if gcc builds with the stack protector
367gcc-specs-ssp() { 371gcc-specs-ssp() {
368 local directive 372 local directive
369 directive=$(gcc-specs-directive cc1) 373 directive=$(gcc-specs-directive cc1)
370 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 374 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
371} 375}
372# Returns true if gcc upgrades fstack-protector to fstack-protector-all 376# Returns true if gcc upgrades fstack-protector to fstack-protector-all
373gcc-specs-ssp-to-all() { 377gcc-specs-ssp-to-all() {
374 # GCC 4.x does not have -fno-stack-protector-all by default
375 [[ $(gcc-major-version) -ge 4 ]] && return 1
376 local directive 378 local directive
377 directive=$(gcc-specs-directive cc1) 379 directive=$(gcc-specs-directive cc1)
378 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 380 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
379} 381}
380# Returns true if gcc builds with fno-strict-overflow 382# Returns true if gcc builds with fno-strict-overflow
381gcc-specs-nostrict() { 383gcc-specs-nostrict() {
382 local directive 384 local directive
383 directive=$(gcc-specs-directive cc1) 385 directive=$(gcc-specs-directive cc1)
384 return $([[ ${directive/\{!fstrict-overflow:} != ${directive} ]]) 386 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
385} 387}
386 388
387 389
388# @FUNCTION: gen_usr_ldscript 390# @FUNCTION: gen_usr_ldscript
389# @USAGE: <list of libs to create linker scripts for> 391# @USAGE: [-a] <list of libs to create linker scripts for>
390# @DESCRIPTION: 392# @DESCRIPTION:
391# This function generate linker scripts in /usr/lib for dynamic 393# This function generate linker scripts in /usr/lib for dynamic
392# libs in /lib. This is to fix linking problems when you have 394# libs in /lib. This is to fix linking problems when you have
393# the .so in /lib, and the .a in /usr/lib. What happens is that 395# the .so in /lib, and the .a in /usr/lib. What happens is that
394# in some cases when linking dynamic, the .a in /usr/lib is used 396# in some cases when linking dynamic, the .a in /usr/lib is used
398# 400#
399# Note that you should in general use the unversioned name of 401# Note that you should in general use the unversioned name of
400# the library (libfoo.so), as ldconfig should usually update it 402# the library (libfoo.so), as ldconfig should usually update it
401# correctly to point to the latest version of the library present. 403# correctly to point to the latest version of the library present.
402gen_usr_ldscript() { 404gen_usr_ldscript() {
403 local lib libdir=$(get_libdir) output_format="" 405 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
404 # Just make sure it exists 406 # Just make sure it exists
405 dodir /usr/${libdir} 407 dodir /usr/${libdir}
408
409 if [[ $1 == "-a" ]] ; then
410 auto=true
411 shift
412 dodir /${libdir}
413 fi
406 414
407 # OUTPUT_FORMAT gives hints to the linker as to what binary format 415 # OUTPUT_FORMAT gives hints to the linker as to what binary format
408 # is referenced ... makes multilib saner 416 # is referenced ... makes multilib saner
409 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 417 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
410 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 418 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
413 if [[ ${USERLAND} == "Darwin" ]] ; then 421 if [[ ${USERLAND} == "Darwin" ]] ; then
414 ewarn "Not creating fake dynamic library for $lib on Darwin;" 422 ewarn "Not creating fake dynamic library for $lib on Darwin;"
415 ewarn "making a symlink instead." 423 ewarn "making a symlink instead."
416 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}" 424 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
417 else 425 else
426 local tlib
427 if ${auto} ; then
428 lib="lib${lib}${suffix}"
429 tlib=$(scanelf -qF'%S#F' "${D}"/usr/${libdir}/${lib})
430 mv "${D}"/usr/${libdir}/${lib}* "${D}"/${libdir}/ || die
431 # some SONAMEs are funky: they encode a version before the .so
432 if [[ ${tlib} != ${lib}* ]] ; then
433 mv "${D}"/usr/${libdir}/${tlib}* "${D}"/${libdir}/ || die
434 fi
435 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
436 rm -f "${D}"/${libdir}/${lib}
437 else
438 tlib=${lib}
439 fi
418 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 440 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
419 /* GNU ld script 441 /* GNU ld script
420 Since Gentoo has critical dynamic libraries 442 Since Gentoo has critical dynamic libraries in /lib, and the static versions
421 in /lib, and the static versions in /usr/lib, 443 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
422 we need to have a "fake" dynamic lib in /usr/lib, 444 run into linking problems. This "fake" dynamic lib is a linker script that
423 otherwise we run into linking problems. 445 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.
424 447
425 See bug http://bugs.gentoo.org/4411 for more info. 448 See bug http://bugs.gentoo.org/4411 for more info.
426 */ 449 */
427 ${output_format} 450 ${output_format}
428 GROUP ( /${libdir}/${lib} ) 451 GROUP ( /${libdir}/${tlib} )
429 END_LDSCRIPT 452 END_LDSCRIPT
453 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
430 fi 454 fi
431 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
432 done 455 done
433} 456}

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