/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2006 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 1.59 2006/06/28 16:19:46 kanaka Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.71 2007/07/11 04:06:29 robbat2 Exp $
4# 4#
5# Author: Toolchain Ninjas <toolchain@gentoo.org> 5# Maintainer: Toolchain Ninjas <toolchain@gentoo.org>
6# 6#
7# This eclass contains (or should) functions to get common info 7# This eclass contains (or should) functions to get common info
8# about the toolchain (libc/compiler/binutils/etc...) 8# about the toolchain (libc/compiler/binutils/etc...)
9 9
10inherit multilib 10___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
11 12
12DESCRIPTION="Based on the ${ECLASS} eclass" 13DESCRIPTION="Based on the ${ECLASS} eclass"
13 14
14tc-getPROG() { 15tc-getPROG() {
15 local var=$1 16 local var=$1
89# A simple way to see if we're using a cross-compiler ... 90# A simple way to see if we're using a cross-compiler ...
90tc-is-cross-compiler() { 91tc-is-cross-compiler() {
91 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 92 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
92} 93}
93 94
95# See if this toolchain is a softfloat based one.
96# The possible return values:
97# - only: the target is always softfloat (never had fpu)
98# - yes: the target should support softfloat
99# - no: the target should support hardfloat
100# This allows us to react differently where packages accept
101# softfloat flags in the case where support is optional, but
102# rejects softfloat flags where the target always lacks an fpu.
103tc-is-softfloat() {
104 case ${CTARGET} in
105 bfin*|h8300*)
106 echo "only" ;;
107 *)
108 [[ ${CTARGET//_/-} == *-softfloat-* ]] \
109 && echo "yes" \
110 || echo "no"
111 ;;
112 esac
113}
94 114
95# Parse information from CBUILD/CHOST/CTARGET rather than 115# Parse information from CBUILD/CHOST/CTARGET rather than
96# use external variables from the profile. 116# use external variables from the profile.
97tc-ninja_magic_to_arch() { 117tc-ninja_magic_to_arch() {
98ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 118ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
178 esac 198 esac
179} 199}
180 200
181# Returns the version as by `$CC -dumpversion` 201# Returns the version as by `$CC -dumpversion`
182gcc-fullversion() { 202gcc-fullversion() {
183 echo "$($(tc-getCC) -dumpversion)" 203 $(tc-getCC "$@") -dumpversion
184} 204}
185# Returns the version, but only the <major>.<minor> 205# Returns the version, but only the <major>.<minor>
186gcc-version() { 206gcc-version() {
187 echo "$(gcc-fullversion | cut -f1,2 -d.)" 207 gcc-fullversion "$@" | cut -f1,2 -d.
188} 208}
189# Returns the Major version 209# Returns the Major version
190gcc-major-version() { 210gcc-major-version() {
191 echo "$(gcc-version | cut -f1 -d.)" 211 gcc-version "$@" | cut -f1 -d.
192} 212}
193# Returns the Minor version 213# Returns the Minor version
194gcc-minor-version() { 214gcc-minor-version() {
195 echo "$(gcc-version | cut -f2 -d.)" 215 gcc-version "$@" | cut -f2 -d.
196} 216}
197# Returns the Micro version 217# Returns the Micro version
198gcc-micro-version() { 218gcc-micro-version() {
199 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 219 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
200} 220}
221# Returns the installation directory - internal toolchain
222# function for use by _gcc-specs-exists (for flag-o-matic).
223_gcc-install-dir() {
224 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\
225 awk '$1=="install:" {print $2}')"
226}
227# Returns true if the indicated specs file exists - internal toolchain
228# function for use by flag-o-matic.
229_gcc-specs-exists() {
230 [[ -f $(_gcc-install-dir)/$1 ]]
231}
201 232
202# Returns requested gcc specs directive 233# Returns requested gcc specs directive unprocessed - for used by
234# gcc-specs-directive()
203# Note; later specs normally overwrite earlier ones; however if a later 235# Note; later specs normally overwrite earlier ones; however if a later
204# spec starts with '+' then it appends. 236# spec starts with '+' then it appends.
205# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" 237# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
206# as "Reading <file>", in order. 238# as "Reading <file>", in order. Strictly speaking, if there's a
239# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
240# the same token anything from 'gcc -dumpspecs' is overridden by
241# the contents of $(gcc_install_dir)/specs so the result is the
242# same either way.
207gcc-specs-directive() { 243_gcc-specs-directive_raw() {
208 local cc=$(tc-getCC) 244 local cc=$(tc-getCC)
209 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}') 245 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
210 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ 246 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
211'BEGIN { pspec=""; spec=""; outside=1 } 247'BEGIN { pspec=""; spec=""; outside=1 }
212$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 248$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
215 { spec=spec $0 } 251 { spec=spec $0 }
216END { print spec }' 252END { print spec }'
217 return 0 253 return 0
218} 254}
219 255
256# Return the requested gcc specs directive, with all included
257# specs expanded.
258# Note, it does not check for inclusion loops, which cause it
259# to never finish - but such loops are invalid for gcc and we're
260# assuming gcc is operational.
261gcc-specs-directive() {
262 local directive subdname subdirective
263 directive="$(_gcc-specs-directive_raw $1)"
264 while [[ ${directive} == *%\(*\)* ]]; do
265 subdname=${directive/*%\(}
266 subdname=${subdname/\)*}
267 subdirective="$(_gcc-specs-directive_raw ${subdname})"
268 directive="${directive//\%(${subdname})/${subdirective}}"
269 done
270 echo "${directive}"
271 return 0
272}
273
220# Returns true if gcc sets relro 274# Returns true if gcc sets relro
221gcc-specs-relro() { 275gcc-specs-relro() {
222 local directive 276 local directive
223 directive=$(gcc-specs-directive link_command) 277 directive=$(gcc-specs-directive link_command)
224 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 278 return $([[ ${directive/\{!norelro:} != ${directive} ]])
245gcc-specs-ssp-to-all() { 299gcc-specs-ssp-to-all() {
246 local directive 300 local directive
247 directive=$(gcc-specs-directive cc1) 301 directive=$(gcc-specs-directive cc1)
248 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 302 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
249} 303}
304
305
306# This function generate linker scripts in /usr/lib for dynamic
307# libs in /lib. This is to fix linking problems when you have
308# the .so in /lib, and the .a in /usr/lib. What happens is that
309# in some cases when linking dynamic, the .a in /usr/lib is used
310# instead of the .so in /lib due to gcc/libtool tweaking ld's
311# library search path. This cause many builds to fail.
312# See bug #4411 for more info.
313#
314# To use, simply call:
315#
316# gen_usr_ldscript libfoo.so
317#
318# Note that you should in general use the unversioned name of
319# the library, as ldconfig should usually update it correctly
320# to point to the latest version of the library present.
321gen_usr_ldscript() {
322 local lib libdir=$(get_libdir) output_format=""
323 # Just make sure it exists
324 dodir /usr/${libdir}
325
326 # OUTPUT_FORMAT gives hints to the linker as to what binary format
327 # is referenced ... makes multilib saner
328 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
329 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
330
331 for lib in "$@" ; do
332 if [[ ${USERLAND} == "Darwin" ]] ; then
333 ewarn "Not creating fake dynamic library for $lib on Darwin;"
334 ewarn "making a symlink instead."
335 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
336 else
337 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
338 /* GNU ld script
339 Since Gentoo has critical dynamic libraries
340 in /lib, and the static versions in /usr/lib,
341 we need to have a "fake" dynamic lib in /usr/lib,
342 otherwise we run into linking problems.
343
344 See bug http://bugs.gentoo.org/4411 for more info.
345 */
346 ${output_format}
347 GROUP ( /${libdir}/${lib} )
348 END_LDSCRIPT
349 fi
350 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
351 done
352}

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