/[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 1.73 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 $@
151} 176}
178 esac 203 esac
179} 204}
180 205
181# Returns the version as by `$CC -dumpversion` 206# Returns the version as by `$CC -dumpversion`
182gcc-fullversion() { 207gcc-fullversion() {
183 echo "$($(tc-getCC) -dumpversion)" 208 $(tc-getCC "$@") -dumpversion
184} 209}
185# Returns the version, but only the <major>.<minor> 210# Returns the version, but only the <major>.<minor>
186gcc-version() { 211gcc-version() {
187 echo "$(gcc-fullversion | cut -f1,2 -d.)" 212 gcc-fullversion "$@" | cut -f1,2 -d.
188} 213}
189# Returns the Major version 214# Returns the Major version
190gcc-major-version() { 215gcc-major-version() {
191 echo "$(gcc-version | cut -f1 -d.)" 216 gcc-version "$@" | cut -f1 -d.
192} 217}
193# Returns the Minor version 218# Returns the Minor version
194gcc-minor-version() { 219gcc-minor-version() {
195 echo "$(gcc-version | cut -f2 -d.)" 220 gcc-version "$@" | cut -f2 -d.
196} 221}
197# Returns the Micro version 222# Returns the Micro version
198gcc-micro-version() { 223gcc-micro-version() {
199 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 224 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
200} 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}
201 237
202# Returns requested gcc specs directive 238# Returns requested gcc specs directive unprocessed - for used by
239# gcc-specs-directive()
203# Note; later specs normally overwrite earlier ones; however if a later 240# Note; later specs normally overwrite earlier ones; however if a later
204# spec starts with '+' then it appends. 241# spec starts with '+' then it appends.
205# 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"
206# 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 $(gcc_install_dir)/specs so the result is the
247# same either way.
207gcc-specs-directive() { 248_gcc-specs-directive_raw() {
208 local cc=$(tc-getCC) 249 local cc=$(tc-getCC)
209 local specfiles=$(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}')
210 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ 251 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
211'BEGIN { pspec=""; spec=""; outside=1 } 252'BEGIN { pspec=""; spec=""; outside=1 }
212$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 253$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
215 { spec=spec $0 } 256 { spec=spec $0 }
216END { print spec }' 257END { print spec }'
217 return 0 258 return 0
218} 259}
219 260
261# Return the requested gcc specs directive, with all included
262# specs expanded.
263# Note, it does not check for inclusion loops, which cause it
264# to never finish - but such loops are invalid for gcc and we're
265# assuming gcc is operational.
266gcc-specs-directive() {
267 local directive subdname subdirective
268 directive="$(_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 "${directive}"
276 return 0
277}
278
220# Returns true if gcc sets relro 279# Returns true if gcc sets relro
221gcc-specs-relro() { 280gcc-specs-relro() {
222 local directive 281 local directive
223 directive=$(gcc-specs-directive link_command) 282 directive=$(gcc-specs-directive link_command)
224 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 283 return $([[ ${directive/\{!norelro:} != ${directive} ]])
245gcc-specs-ssp-to-all() { 304gcc-specs-ssp-to-all() {
246 local directive 305 local directive
247 directive=$(gcc-specs-directive cc1) 306 directive=$(gcc-specs-directive cc1)
248 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 307 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
249} 308}
309
310
311# This function generate linker scripts in /usr/lib for dynamic
312# libs in /lib. This is to fix linking problems when you have
313# the .so in /lib, and the .a in /usr/lib. What happens is that
314# in some cases when linking dynamic, the .a in /usr/lib is used
315# instead of the .so in /lib due to gcc/libtool tweaking ld's
316# library search path. This cause many builds to fail.
317# See bug #4411 for more info.
318#
319# To use, simply call:
320#
321# gen_usr_ldscript libfoo.so
322#
323# Note that you should in general use the unversioned name of
324# the library, as ldconfig should usually update it correctly
325# to point to the latest version of the library present.
326gen_usr_ldscript() {
327 local lib libdir=$(get_libdir) output_format=""
328 # Just make sure it exists
329 dodir /usr/${libdir}
330
331 # OUTPUT_FORMAT gives hints to the linker as to what binary format
332 # is referenced ... makes multilib saner
333 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
334 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
335
336 for lib in "$@" ; do
337 if [[ ${USERLAND} == "Darwin" ]] ; then
338 ewarn "Not creating fake dynamic library for $lib on Darwin;"
339 ewarn "making a symlink instead."
340 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
341 else
342 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
343 /* GNU ld script
344 Since Gentoo has critical dynamic libraries
345 in /lib, and the static versions in /usr/lib,
346 we need to have a "fake" dynamic lib in /usr/lib,
347 otherwise we run into linking problems.
348
349 See bug http://bugs.gentoo.org/4411 for more info.
350 */
351 ${output_format}
352 GROUP ( /${libdir}/${lib} )
353 END_LDSCRIPT
354 fi
355 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
356 done
357}

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