/[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 1.64 2007/01/07 11:39:08 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.73 2007/07/22 19:59:48 vapier 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 ; }
102 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 122 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
103 123
104 case ${host} in 124 case ${host} in
105 alpha*) echo alpha;; 125 alpha*) echo alpha;;
106 arm*) echo arm;; 126 arm*) echo arm;;
127 avr*) ninj avr32 avr;;
107 bfin*) ninj blackfin bfin;; 128 bfin*) ninj blackfin bfin;;
108 cris*) echo cris;; 129 cris*) echo cris;;
109 hppa*) ninj parisc hppa;; 130 hppa*) ninj parisc hppa;;
110 i?86*) ninj i386 x86;; 131 i?86*) ninj i386 x86;;
111 ia64*) echo ia64;; 132 ia64*) echo ia64;;
141 && ninj sparc64 sparc \ 162 && ninj sparc64 sparc \
142 || echo sparc 163 || echo sparc
143 ;; 164 ;;
144 vax*) echo vax;; 165 vax*) echo vax;;
145 x86_64*) ninj x86_64 amd64;; 166 x86_64*) ninj x86_64 amd64;;
146 *) echo ${ARCH};; 167
168 # since our usage of tc-arch is largely concerned with
169 # normalizing inputs for testing ${CTARGET}, let's filter
170 # other cross targets (mingw and such) into the unknown.
171 *) echo unknown;;
147 esac 172 esac
148} 173}
149tc-arch-kernel() { 174tc-arch-kernel() {
150 tc-ninja_magic_to_arch kern $@ 175 tc-ninja_magic_to_arch kern $@
151} 176}
152tc-arch() { 177tc-arch() {
153 tc-ninja_magic_to_arch portage $@ 178 tc-ninja_magic_to_arch portage $@
179}
180tc-endian() {
181 local host=$1
182 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
183 host=${host%%-*}
184
185 case ${host} in
186 alpha*) echo big;;
187 arm*b*) echo big;;
188 arm*) echo little;;
189 cris*) echo little;;
190 hppa*) echo big;;
191 i?86*) echo little;;
192 ia64*) echo little;;
193 m68*) echo big;;
194 mips*l*) echo little;;
195 mips*) echo big;;
196 powerpc*) echo big;;
197 s390*) echo big;;
198 sh*b*) echo big;;
199 sh*) echo little;;
200 sparc*) echo big;;
201 x86_64*) echo little;;
202 *) echo wtf;;
203 esac
154} 204}
155 205
156# Returns the version as by `$CC -dumpversion` 206# Returns the version as by `$CC -dumpversion`
157gcc-fullversion() { 207gcc-fullversion() {
158 $(tc-getCC "$@") -dumpversion 208 $(tc-getCC "$@") -dumpversion
171} 221}
172# Returns the Micro version 222# Returns the Micro version
173gcc-micro-version() { 223gcc-micro-version() {
174 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- 224 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
175} 225}
226# Returns the installation directory - internal toolchain
227# function for use by _gcc-specs-exists (for flag-o-matic).
228_gcc-install-dir() {
229 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\
230 awk '$1=="install:" {print $2}')"
231}
232# Returns true if the indicated specs file exists - internal toolchain
233# function for use by flag-o-matic.
234_gcc-specs-exists() {
235 [[ -f $(_gcc-install-dir)/$1 ]]
236}
176 237
177# Returns requested gcc specs directive 238# Returns requested gcc specs directive unprocessed - for used by
239# gcc-specs-directive()
178# Note; later specs normally overwrite earlier ones; however if a later 240# Note; later specs normally overwrite earlier ones; however if a later
179# spec starts with '+' then it appends. 241# spec starts with '+' then it appends.
180# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" 242# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
181# as "Reading <file>", in order. 243# as "Reading <file>", in order. Strictly speaking, if there's a
244# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
245# the same token anything from 'gcc -dumpspecs' is overridden by
246# the contents of $(gcc_install_dir)/specs so the result is the
247# same either way.
182gcc-specs-directive() { 248_gcc-specs-directive_raw() {
183 local cc=$(tc-getCC) 249 local cc=$(tc-getCC)
184 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}') 250 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
185 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ 251 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
186'BEGIN { pspec=""; spec=""; outside=1 } 252'BEGIN { pspec=""; spec=""; outside=1 }
187$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 253$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
190 { spec=spec $0 } 256 { spec=spec $0 }
191END { print spec }' 257END { print spec }'
192 return 0 258 return 0
193} 259}
194 260
261# Return the requested gcc specs directive, with all included
262# specs expanded.
263# Note, it does not check for inclusion loops, which cause it
264# to never finish - but such loops are invalid for gcc and we're
265# assuming gcc is operational.
266gcc-specs-directive() {
267 local directive subdname subdirective
268 directive="$(_gcc-specs-directive_raw $1)"
269 while [[ ${directive} == *%\(*\)* ]]; do
270 subdname=${directive/*%\(}
271 subdname=${subdname/\)*}
272 subdirective="$(_gcc-specs-directive_raw ${subdname})"
273 directive="${directive//\%(${subdname})/${subdirective}}"
274 done
275 echo "${directive}"
276 return 0
277}
278
195# Returns true if gcc sets relro 279# Returns true if gcc sets relro
196gcc-specs-relro() { 280gcc-specs-relro() {
197 local directive 281 local directive
198 directive=$(gcc-specs-directive link_command) 282 directive=$(gcc-specs-directive link_command)
199 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 283 return $([[ ${directive/\{!norelro:} != ${directive} ]])
237# gen_usr_ldscript libfoo.so 321# gen_usr_ldscript libfoo.so
238# 322#
239# Note that you should in general use the unversioned name of 323# Note that you should in general use the unversioned name of
240# the library, as ldconfig should usually update it correctly 324# the library, as ldconfig should usually update it correctly
241# to point to the latest version of the library present. 325# to point to the latest version of the library present.
242_tc_gen_usr_ldscript() { 326gen_usr_ldscript() {
243 local lib libdir=$(get_libdir) output_format="" 327 local lib libdir=$(get_libdir) output_format=""
244 # Just make sure it exists 328 # Just make sure it exists
245 dodir /usr/${libdir} 329 dodir /usr/${libdir}
246 330
247 # OUTPUT_FORMAT gives hints to the linker as to what binary format 331 # OUTPUT_FORMAT gives hints to the linker as to what binary format
269 END_LDSCRIPT 353 END_LDSCRIPT
270 fi 354 fi
271 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 355 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
272 done 356 done
273} 357}
274gen_usr_ldscript() { _tc_gen_usr_ldscript "$@" ; }

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