/[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 1.56 2006/02/17 22:18:20 swegener Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.70 2007/06/16 07:11:43 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=$1
33tc-getAR() { tc-getPROG AR ar "$@"; } 34tc-getAR() { tc-getPROG AR ar "$@"; }
34# Returns the name of the assembler 35# Returns the name of the assembler
35tc-getAS() { tc-getPROG AS as "$@"; } 36tc-getAS() { tc-getPROG AS as "$@"; }
36# Returns the name of the C compiler 37# Returns the name of the C compiler
37tc-getCC() { tc-getPROG CC gcc "$@"; } 38tc-getCC() { tc-getPROG CC gcc "$@"; }
39# Returns the name of the C preprocessor
40tc-getCPP() { tc-getPROG CPP cpp "$@"; }
38# Returns the name of the C++ compiler 41# Returns the name of the C++ compiler
39tc-getCXX() { tc-getPROG CXX g++ "$@"; } 42tc-getCXX() { tc-getPROG CXX g++ "$@"; }
40# Returns the name of the linker 43# Returns the name of the linker
41tc-getLD() { tc-getPROG LD ld "$@"; } 44tc-getLD() { tc-getPROG LD ld "$@"; }
45# Returns the name of the strip prog
46tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
42# Returns the name of the symbol/object thingy 47# Returns the name of the symbol/object thingy
43tc-getNM() { tc-getPROG NM nm "$@"; } 48tc-getNM() { tc-getPROG NM nm "$@"; }
44# Returns the name of the archiver indexer 49# Returns the name of the archiver indexer
45tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } 50tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
51# Returns the name of the fortran 77 compiler
52tc-getF77() { tc-getPROG F77 f77 "$@"; }
53# Returns the name of the fortran 90 compiler
54tc-getF90() { tc-getPROG F90 gfortran "$@"; }
46# Returns the name of the fortran compiler 55# Returns the name of the fortran compiler
47tc-getF77() { tc-getPROG F77 f77 "$@"; } 56tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
48# Returns the name of the java compiler 57# Returns the name of the java compiler
49tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 58tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
50 59
51# Returns the name of the C compiler for build 60# Returns the name of the C compiler for build
52tc-getBUILD_CC() { 61tc-getBUILD_CC() {
81# 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 ...
82tc-is-cross-compiler() { 91tc-is-cross-compiler() {
83 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 92 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
84} 93}
85 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}
86 114
87# Parse information from CBUILD/CHOST/CTARGET rather than 115# Parse information from CBUILD/CHOST/CTARGET rather than
88# use external variables from the profile. 116# use external variables from the profile.
89tc-ninja_magic_to_arch() { 117tc-ninja_magic_to_arch() {
90ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 118ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
142 tc-ninja_magic_to_arch kern $@ 170 tc-ninja_magic_to_arch kern $@
143} 171}
144tc-arch() { 172tc-arch() {
145 tc-ninja_magic_to_arch portage $@ 173 tc-ninja_magic_to_arch portage $@
146} 174}
147tc-endian() {
148 local host=$1
149 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
150 host=${host%%-*}
151
152 case ${host} in
153 alpha*) echo big;;
154 arm*b*) echo big;;
155 arm*) echo little;;
156 cris*) echo little;;
157 hppa*) echo big;;
158 i?86*) echo little;;
159 ia64*) echo little;;
160 m68*) echo big;;
161 mips*l*) echo little;;
162 mips*) echo big;;
163 powerpc*) echo big;;
164 s390*) echo big;;
165 sh*b*) echo big;;
166 sh*) echo little;;
167 sparc*) echo big;;
168 x86_64*) echo little;;
169 *) echo wtf;;
170 esac
171}
172 175
173# Returns the version as by `$CC -dumpversion` 176# Returns the version as by `$CC -dumpversion`
174gcc-fullversion() { 177gcc-fullversion() {
175 echo "$($(tc-getCC) -dumpversion)" 178 $(tc-getCC "$@") -dumpversion
176} 179}
177# Returns the version, but only the <major>.<minor> 180# Returns the version, but only the <major>.<minor>
178gcc-version() { 181gcc-version() {
179 echo "$(gcc-fullversion | cut -f1,2 -d.)" 182 gcc-fullversion "$@" | cut -f1,2 -d.
180} 183}
181# Returns the Major version 184# Returns the Major version
182gcc-major-version() { 185gcc-major-version() {
183 echo "$(gcc-version | cut -f1 -d.)" 186 gcc-version "$@" | cut -f1 -d.
184} 187}
185# Returns the Minor version 188# Returns the Minor version
186gcc-minor-version() { 189gcc-minor-version() {
187 echo "$(gcc-version | cut -f2 -d.)" 190 gcc-version "$@" | cut -f2 -d.
188} 191}
189# Returns the Micro version 192# Returns the Micro version
190gcc-micro-version() { 193gcc-micro-version() {
191 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 194 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
192} 195}
196# Returns the installation directory - internal toolchain
197# function for use by _gcc-specs-exists (for flag-o-matic).
198_gcc-install-dir() {
199 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\
200 awk '$1=="install:" {print $2}')"
201}
202# Returns true if the indicated specs file exists - internal toolchain
203# function for use by flag-o-matic.
204_gcc-specs-exists() {
205 [[ -f $(_gcc-install-dir)/$1 ]]
206}
193 207
194# Returns requested gcc specs directive 208# Returns requested gcc specs directive unprocessed - for used by
209# gcc-specs-directive()
195# Note; later specs normally overwrite earlier ones; however if a later 210# Note; later specs normally overwrite earlier ones; however if a later
196# spec starts with '+' then it appends. 211# spec starts with '+' then it appends.
197# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" 212# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
198# as "Reading <file>", in order. 213# as "Reading <file>", in order. Strictly speaking, if there's a
214# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
215# the same token anything from 'gcc -dumpspecs' is overridden by
216# the contents of $(gcc_install_dir)/specs so the result is the
217# same either way.
199gcc-specs-directive() { 218_gcc-specs-directive_raw() {
219 local cc=$(tc-getCC)
200 local specfiles=$($(tc-getCC) -v 2>&1 | awk '$1=="Reading" {print $NF}') 220 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
201 $(tc-getCC) -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ 221 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
202'BEGIN { pspec=""; spec=""; outside=1 } 222'BEGIN { pspec=""; spec=""; outside=1 }
203$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 223$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
204 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next } 224 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
205 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next } 225 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
206 { spec=spec $0 } 226 { spec=spec $0 }
207END { print spec }' 227END { print spec }'
208 return 0 228 return 0
209} 229}
210 230
231# Return the requested gcc specs directive, with all included
232# specs expanded.
233# Note, it does not check for inclusion loops, which cause it
234# to never finish - but such loops are invalid for gcc and we're
235# assuming gcc is operational.
236gcc-specs-directive() {
237 local directive subdname subdirective
238 directive="$(_gcc-specs-directive_raw $1)"
239 while [[ ${directive} == *%\(*\)* ]]; do
240 subdname=${directive/*%\(}
241 subdname=${subdname/\)*}
242 subdirective="$(_gcc-specs-directive_raw ${subdname})"
243 directive="${directive//\%(${subdname})/${subdirective}}"
244 done
245 echo "${directive}"
246 return 0
247}
248
211# Returns true if gcc sets relro 249# Returns true if gcc sets relro
212gcc-specs-relro() { 250gcc-specs-relro() {
213 local directive 251 local directive
214 directive=$(gcc-specs-directive link_command) 252 directive=$(gcc-specs-directive link_command)
215 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 253 return $([[ ${directive/\{!norelro:} != ${directive} ]])
236gcc-specs-ssp-to-all() { 274gcc-specs-ssp-to-all() {
237 local directive 275 local directive
238 directive=$(gcc-specs-directive cc1) 276 directive=$(gcc-specs-directive cc1)
239 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 277 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
240} 278}
279
280
281# This function generate linker scripts in /usr/lib for dynamic
282# libs in /lib. This is to fix linking problems when you have
283# the .so in /lib, and the .a in /usr/lib. What happens is that
284# in some cases when linking dynamic, the .a in /usr/lib is used
285# instead of the .so in /lib due to gcc/libtool tweaking ld's
286# library search path. This cause many builds to fail.
287# See bug #4411 for more info.
288#
289# To use, simply call:
290#
291# gen_usr_ldscript libfoo.so
292#
293# Note that you should in general use the unversioned name of
294# the library, as ldconfig should usually update it correctly
295# to point to the latest version of the library present.
296gen_usr_ldscript() {
297 local lib libdir=$(get_libdir) output_format=""
298 # Just make sure it exists
299 dodir /usr/${libdir}
300
301 # OUTPUT_FORMAT gives hints to the linker as to what binary format
302 # is referenced ... makes multilib saner
303 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
304 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
305
306 for lib in "$@" ; do
307 if [[ ${USERLAND} == "Darwin" ]] ; then
308 ewarn "Not creating fake dynamic library for $lib on Darwin;"
309 ewarn "making a symlink instead."
310 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
311 else
312 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
313 /* GNU ld script
314 Since Gentoo has critical dynamic libraries
315 in /lib, and the static versions in /usr/lib,
316 we need to have a "fake" dynamic lib in /usr/lib,
317 otherwise we run into linking problems.
318
319 See bug http://bugs.gentoo.org/4411 for more info.
320 */
321 ${output_format}
322 GROUP ( /${libdir}/${lib} )
323 END_LDSCRIPT
324 fi
325 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
326 done
327}

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