/[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 1.77 2008/06/01 08:56:56 aballier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.85 2009/01/27 23:35:04 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
74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } 74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
75# @FUNCTION: tc-getF77 75# @FUNCTION: tc-getF77
76# @USAGE: [toolchain prefix] 76# @USAGE: [toolchain prefix]
77# @RETURN: name of the Fortran 77 compiler 77# @RETURN: name of the Fortran 77 compiler
78tc-getF77() { tc-getPROG F77 f77 "$@"; } 78tc-getF77() { tc-getPROG F77 f77 "$@"; }
79# @FUNCTION: tc-getF90 79# @FUNCTION: tc-getFC
80# @USAGE: [toolchain prefix] 80# @USAGE: [toolchain prefix]
81# @RETURN: name of the Fortran 90 compiler 81# @RETURN: name of the Fortran 90 compiler
82tc-getF90() { tc-getPROG F90 gfortran "$@"; } 82tc-getFC() { tc-getPROG FC gfortran "$@"; }
83# @FUNCTION: tc-getFORTRAN
84# @USAGE: [toolchain prefix]
85# @RETURN: name of the Fortran compiler
86tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
87# @FUNCTION: tc-getGCJ 83# @FUNCTION: tc-getGCJ
88# @USAGE: [toolchain prefix] 84# @USAGE: [toolchain prefix]
89# @RETURN: name of the java compiler 85# @RETURN: name of the java compiler
90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 86tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
91 87
118# @DESCRIPTION: 114# @DESCRIPTION:
119# Quick way to export a bunch of compiler vars at once. 115# Quick way to export a bunch of compiler vars at once.
120tc-export() { 116tc-export() {
121 local var 117 local var
122 for var in "$@" ; do 118 for var in "$@" ; do
119 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
123 eval tc-get${var} > /dev/null 120 eval tc-get${var} > /dev/null
124 done 121 done
125} 122}
126 123
127# @FUNCTION: tc-is-cross-compiler 124# @FUNCTION: tc-is-cross-compiler
350 347
351# Returns true if gcc sets relro 348# Returns true if gcc sets relro
352gcc-specs-relro() { 349gcc-specs-relro() {
353 local directive 350 local directive
354 directive=$(gcc-specs-directive link_command) 351 directive=$(gcc-specs-directive link_command)
355 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 352 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
356} 353}
357# Returns true if gcc sets now 354# Returns true if gcc sets now
358gcc-specs-now() { 355gcc-specs-now() {
359 local directive 356 local directive
360 directive=$(gcc-specs-directive link_command) 357 directive=$(gcc-specs-directive link_command)
361 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 358 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
362} 359}
363# Returns true if gcc builds PIEs 360# Returns true if gcc builds PIEs
364gcc-specs-pie() { 361gcc-specs-pie() {
365 local directive 362 local directive
366 directive=$(gcc-specs-directive cc1) 363 directive=$(gcc-specs-directive cc1)
367 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 364 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
368} 365}
369# Returns true if gcc builds with the stack protector 366# Returns true if gcc builds with the stack protector
370gcc-specs-ssp() { 367gcc-specs-ssp() {
371 local directive 368 local directive
372 directive=$(gcc-specs-directive cc1) 369 directive=$(gcc-specs-directive cc1)
373 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 370 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
374} 371}
375# Returns true if gcc upgrades fstack-protector to fstack-protector-all 372# Returns true if gcc upgrades fstack-protector to fstack-protector-all
376gcc-specs-ssp-to-all() { 373gcc-specs-ssp-to-all() {
377 local directive 374 local directive
378 directive=$(gcc-specs-directive cc1) 375 directive=$(gcc-specs-directive cc1)
379 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 376 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
377}
378# Returns true if gcc builds with fno-strict-overflow
379gcc-specs-nostrict() {
380 local directive
381 directive=$(gcc-specs-directive cc1)
382 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
380} 383}
381 384
382 385
383# @FUNCTION: gen_usr_ldscript 386# @FUNCTION: gen_usr_ldscript
384# @USAGE: <list of libs to create linker scripts for> 387# @USAGE: [-a] <list of libs to create linker scripts for>
385# @DESCRIPTION: 388# @DESCRIPTION:
386# This function generate linker scripts in /usr/lib for dynamic 389# This function generate linker scripts in /usr/lib for dynamic
387# libs in /lib. This is to fix linking problems when you have 390# libs in /lib. This is to fix linking problems when you have
388# the .so in /lib, and the .a in /usr/lib. What happens is that 391# the .so in /lib, and the .a in /usr/lib. What happens is that
389# in some cases when linking dynamic, the .a in /usr/lib is used 392# in some cases when linking dynamic, the .a in /usr/lib is used
393# 396#
394# Note that you should in general use the unversioned name of 397# Note that you should in general use the unversioned name of
395# the library (libfoo.so), as ldconfig should usually update it 398# the library (libfoo.so), as ldconfig should usually update it
396# correctly to point to the latest version of the library present. 399# correctly to point to the latest version of the library present.
397gen_usr_ldscript() { 400gen_usr_ldscript() {
398 local lib libdir=$(get_libdir) output_format="" 401 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
399 # Just make sure it exists 402 # Just make sure it exists
400 dodir /usr/${libdir} 403 dodir /usr/${libdir}
404
405 if [[ $1 == "-a" ]] ; then
406 auto=true
407 shift
408 dodir /${libdir}
409 fi
401 410
402 # OUTPUT_FORMAT gives hints to the linker as to what binary format 411 # OUTPUT_FORMAT gives hints to the linker as to what binary format
403 # is referenced ... makes multilib saner 412 # is referenced ... makes multilib saner
404 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 413 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
405 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 414 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
408 if [[ ${USERLAND} == "Darwin" ]] ; then 417 if [[ ${USERLAND} == "Darwin" ]] ; then
409 ewarn "Not creating fake dynamic library for $lib on Darwin;" 418 ewarn "Not creating fake dynamic library for $lib on Darwin;"
410 ewarn "making a symlink instead." 419 ewarn "making a symlink instead."
411 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}" 420 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
412 else 421 else
422 local tlib
423 if ${auto} ; then
424 lib="lib${lib}${suffix}"
425 mv "${D}"/usr/${libdir}/${lib}* "${D}"/${libdir}/ || die
426 tlib=$(scanelf -qF'%S#F' "${D}"/${libdir}/${lib})
427 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
428 rm -f "${D}"/${libdir}/${lib}
429 else
430 tlib=${lib}
431 fi
413 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 432 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
414 /* GNU ld script 433 /* GNU ld script
415 Since Gentoo has critical dynamic libraries 434 Since Gentoo has critical dynamic libraries
416 in /lib, and the static versions in /usr/lib, 435 in /lib, and the static versions in /usr/lib,
417 we need to have a "fake" dynamic lib in /usr/lib, 436 we need to have a "fake" dynamic lib in /usr/lib,
418 otherwise we run into linking problems. 437 otherwise we run into linking problems.
419 438
420 See bug http://bugs.gentoo.org/4411 for more info. 439 See bug http://bugs.gentoo.org/4411 for more info.
421 */ 440 */
422 ${output_format} 441 ${output_format}
423 GROUP ( /${libdir}/${lib} ) 442 GROUP ( /${libdir}/${tlib} )
424 END_LDSCRIPT 443 END_LDSCRIPT
444 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
425 fi 445 fi
426 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
427 done 446 done
428} 447}

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