/[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 1.54 2006/01/24 20:12:53 josejx Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.68 2007/03/15 15:55:59 kevquinn 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 10inherit multilib
33tc-getAR() { tc-getPROG AR ar "$@"; } 33tc-getAR() { tc-getPROG AR ar "$@"; }
34# Returns the name of the assembler 34# Returns the name of the assembler
35tc-getAS() { tc-getPROG AS as "$@"; } 35tc-getAS() { tc-getPROG AS as "$@"; }
36# Returns the name of the C compiler 36# Returns the name of the C compiler
37tc-getCC() { tc-getPROG CC gcc "$@"; } 37tc-getCC() { tc-getPROG CC gcc "$@"; }
38# Returns the name of the C preprocessor
39tc-getCPP() { tc-getPROG CPP cpp "$@"; }
38# Returns the name of the C++ compiler 40# Returns the name of the C++ compiler
39tc-getCXX() { tc-getPROG CXX g++ "$@"; } 41tc-getCXX() { tc-getPROG CXX g++ "$@"; }
40# Returns the name of the linker 42# Returns the name of the linker
41tc-getLD() { tc-getPROG LD ld "$@"; } 43tc-getLD() { tc-getPROG LD ld "$@"; }
44# Returns the name of the strip prog
45tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
42# Returns the name of the symbol/object thingy 46# Returns the name of the symbol/object thingy
43tc-getNM() { tc-getPROG NM nm "$@"; } 47tc-getNM() { tc-getPROG NM nm "$@"; }
44# Returns the name of the archiver indexer 48# Returns the name of the archiver indexer
45tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } 49tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
50# Returns the name of the fortran 77 compiler
51tc-getF77() { tc-getPROG F77 f77 "$@"; }
52# Returns the name of the fortran 90 compiler
53tc-getF90() { tc-getPROG F90 gfortran "$@"; }
46# Returns the name of the fortran compiler 54# Returns the name of the fortran compiler
47tc-getF77() { tc-getPROG F77 f77 "$@"; } 55tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
48# Returns the name of the java compiler 56# Returns the name of the java compiler
49tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 57tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
50 58
51# Returns the name of the C compiler for build 59# Returns the name of the C compiler for build
52tc-getBUILD_CC() { 60tc-getBUILD_CC() {
81# A simple way to see if we're using a cross-compiler ... 89# A simple way to see if we're using a cross-compiler ...
82tc-is-cross-compiler() { 90tc-is-cross-compiler() {
83 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 91 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
84} 92}
85 93
94# See if this toolchain is a softfloat based one.
95# The possible return values:
96# - only: the target is always softfloat (never had fpu)
97# - yes: the target should support softfloat
98# - no: the target should support hardfloat
99# This allows us to react differently where packages accept
100# softfloat flags in the case where support is optional, but
101# rejects softfloat flags where the target always lacks an fpu.
102tc-is-softfloat() {
103 case ${CTARGET} in
104 bfin*|h8300*)
105 echo "only" ;;
106 *)
107 [[ ${CTARGET//_/-} == *-softfloat-* ]] \
108 && echo "yes" \
109 || echo "no"
110 ;;
111 esac
112}
86 113
87# Parse information from CBUILD/CHOST/CTARGET rather than 114# Parse information from CBUILD/CHOST/CTARGET rather than
88# use external variables from the profile. 115# use external variables from the profile.
89tc-ninja_magic_to_arch() { 116tc-ninja_magic_to_arch() {
90ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 117ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
110 # have been unified into simply 'powerpc', but until 2.6.16, 137 # have been unified into simply 'powerpc', but until 2.6.16,
111 # ppc32 is still using ARCH="ppc" as default 138 # ppc32 is still using ARCH="ppc" as default
112 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then 139 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
113 echo powerpc 140 echo powerpc
114 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then 141 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
115 if [[ ${PROFILE_ARCH} == "ppc64" ]] ; then 142 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
116 echo powerpc 143 echo powerpc
117 else 144 else
118 echo ppc 145 echo ppc
119 fi 146 fi
120 elif [[ ${host} == powerpc64* ]] ; then 147 elif [[ ${host} == powerpc64* ]] ; then
121 echo ppc64 148 echo ppc64
122 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then 149 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
123 ninj ppc64 ppc 150 ninj ppc64 ppc
124 else 151 else
142 tc-ninja_magic_to_arch kern $@ 169 tc-ninja_magic_to_arch kern $@
143} 170}
144tc-arch() { 171tc-arch() {
145 tc-ninja_magic_to_arch portage $@ 172 tc-ninja_magic_to_arch portage $@
146} 173}
147tc-endian() {
148 local host=$1
149 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
150 host=${host%%-*}
151
152 case ${host} in
153 alpha*) echo big;;
154 arm*b*) echo big;;
155 arm*) echo little;;
156 cris*) echo little;;
157 hppa*) echo big;;
158 i?86*) echo little;;
159 ia64*) echo little;;
160 m68*) echo big;;
161 mips*l*) echo little;;
162 mips*) echo big;;
163 powerpc*) echo big;;
164 s390*) echo big;;
165 sh*b*) echo big;;
166 sh*) echo little;;
167 sparc*) echo big;;
168 x86_64*) echo little;;
169 *) echo wtf;;
170 esac
171}
172 174
173# Returns the version as by `$CC -dumpversion` 175# Returns the version as by `$CC -dumpversion`
174gcc-fullversion() { 176gcc-fullversion() {
175 echo "$($(tc-getCC) -dumpversion)" 177 $(tc-getCC "$@") -dumpversion
176} 178}
177# Returns the version, but only the <major>.<minor> 179# Returns the version, but only the <major>.<minor>
178gcc-version() { 180gcc-version() {
179 echo "$(gcc-fullversion | cut -f1,2 -d.)" 181 gcc-fullversion "$@" | cut -f1,2 -d.
180} 182}
181# Returns the Major version 183# Returns the Major version
182gcc-major-version() { 184gcc-major-version() {
183 echo "$(gcc-version | cut -f1 -d.)" 185 gcc-version "$@" | cut -f1 -d.
184} 186}
185# Returns the Minor version 187# Returns the Minor version
186gcc-minor-version() { 188gcc-minor-version() {
187 echo "$(gcc-version | cut -f2 -d.)" 189 gcc-version "$@" | cut -f2 -d.
188} 190}
189# Returns the Micro version 191# Returns the Micro version
190gcc-micro-version() { 192gcc-micro-version() {
191 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 193 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
192} 194}
195# Returns the installation directory - internal toolchain
196# function for use by _gcc-specs-exists (for flag-o-matic).
197_gcc-install-dir() {
198 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\
199 awk '$1=="install:" {print $2}')"
200}
201# Returns true if the indicated specs file exists - internal toolchain
202# function for use by flag-o-matic.
203_gcc-specs-exists() {
204 [[ -f $(_gcc-install-dir)/$1 ]]
205}
193 206
194# Returns requested gcc specs directive 207# Returns requested gcc specs directive unprocessed - for used by
208# gcc-specs-directive()
195# Note; later specs normally overwrite earlier ones; however if a later 209# Note; later specs normally overwrite earlier ones; however if a later
196# spec starts with '+' then it appends. 210# spec starts with '+' then it appends.
197# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" 211# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
198# as "Reading <file>", in order. 212# as "Reading <file>", in order. Strictly speaking, if there's a
213# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
214# the same token anything from 'gcc -dumpspecs' is overridden by
215# the contents of $(gcc_install_dir)/specs so the result is the
216# same either way.
199gcc-specs-directive() { 217_gcc-specs-directive_raw() {
218 local cc=$(tc-getCC)
200 local specfiles=$($(tc-getCC) -v 2>&1 | awk '$1=="Reading" {print $NF}') 219 local specfiles=$(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 \ 220 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
202'BEGIN { pspec=""; spec=""; outside=1 } 221'BEGIN { pspec=""; spec=""; outside=1 }
203$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 222$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
204 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next } 223 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 } 224 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
206 { spec=spec $0 } 225 { spec=spec $0 }
207END { print spec }' 226END { print spec }'
208 return 0 227 return 0
209} 228}
210 229
230# Return the requested gcc specs directive, with all included
231# specs expanded.
232# Note, it does not check for inclusion loops, which cause it
233# to never finish - but such loops are invalid for gcc and we're
234# assuming gcc is operational.
235gcc-specs-directive() {
236 local directive subdname subdirective
237 directive="$(_gcc-specs-directive_raw $1)"
238 while [[ ${directive} == *%\(*\)* ]]; do
239 subdname=${directive/*%\(}
240 subdname=${subdname/\)*}
241 subdirective="$(_gcc-specs-directive_raw ${subdname})"
242 directive="${directive//\%(${subdname})/${subdirective}}"
243 done
244 echo "${directive}"
245 return 0
246}
247
211# Returns true if gcc sets relro 248# Returns true if gcc sets relro
212gcc-specs-relro() { 249gcc-specs-relro() {
213 local directive 250 local directive
214 directive=$(gcc-specs-directive link_command) 251 directive=$(gcc-specs-directive link_command)
215 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 252 return $([[ ${directive/\{!norelro:} != ${directive} ]])
236gcc-specs-ssp-to-all() { 273gcc-specs-ssp-to-all() {
237 local directive 274 local directive
238 directive=$(gcc-specs-directive cc1) 275 directive=$(gcc-specs-directive cc1)
239 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 276 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
240} 277}
278
279
280# This function generate linker scripts in /usr/lib for dynamic
281# libs in /lib. This is to fix linking problems when you have
282# the .so in /lib, and the .a in /usr/lib. What happens is that
283# in some cases when linking dynamic, the .a in /usr/lib is used
284# instead of the .so in /lib due to gcc/libtool tweaking ld's
285# library search path. This cause many builds to fail.
286# See bug #4411 for more info.
287#
288# To use, simply call:
289#
290# gen_usr_ldscript libfoo.so
291#
292# Note that you should in general use the unversioned name of
293# the library, as ldconfig should usually update it correctly
294# to point to the latest version of the library present.
295_tc_gen_usr_ldscript() {
296 local lib libdir=$(get_libdir) output_format=""
297 # Just make sure it exists
298 dodir /usr/${libdir}
299
300 # OUTPUT_FORMAT gives hints to the linker as to what binary format
301 # is referenced ... makes multilib saner
302 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
303 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
304
305 for lib in "$@" ; do
306 if [[ ${USERLAND} == "Darwin" ]] ; then
307 ewarn "Not creating fake dynamic library for $lib on Darwin;"
308 ewarn "making a symlink instead."
309 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
310 else
311 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
312 /* GNU ld script
313 Since Gentoo has critical dynamic libraries
314 in /lib, and the static versions in /usr/lib,
315 we need to have a "fake" dynamic lib in /usr/lib,
316 otherwise we run into linking problems.
317
318 See bug http://bugs.gentoo.org/4411 for more info.
319 */
320 ${output_format}
321 GROUP ( /${libdir}/${lib} )
322 END_LDSCRIPT
323 fi
324 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
325 done
326}
327gen_usr_ldscript() { _tc_gen_usr_ldscript "$@" ; }

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