/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2005 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 1.43 2005/09/15 00:13:10 vapier 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 <ninjas@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
20 return 0 21 return 0
21 fi 22 fi
22 23
23 local search= 24 local search=
24 [[ -n $3 ]] && search=$(type -p "$3-${prog}") 25 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
25 [[ -z ${search} && -n $(get_abi_CHOST) ]] && search=$(type -p "$(get_abi_CHOST)-${prog}")
26 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}") 26 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
27 [[ -n ${search} ]] && prog=${search##*/} 27 [[ -n ${search} ]] && prog=${search##*/}
28 28
29 export ${var}=${prog} 29 export ${var}=${prog}
30 echo "${!var}" 30 echo "${!var}"
34tc-getAR() { tc-getPROG AR ar "$@"; } 34tc-getAR() { tc-getPROG AR ar "$@"; }
35# Returns the name of the assembler 35# Returns the name of the assembler
36tc-getAS() { tc-getPROG AS as "$@"; } 36tc-getAS() { tc-getPROG AS as "$@"; }
37# Returns the name of the C compiler 37# Returns the name of the C compiler
38tc-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 "$@"; }
39# Returns the name of the C++ compiler 41# Returns the name of the C++ compiler
40tc-getCXX() { tc-getPROG CXX g++ "$@"; } 42tc-getCXX() { tc-getPROG CXX g++ "$@"; }
41# Returns the name of the linker 43# Returns the name of the linker
42tc-getLD() { tc-getPROG LD ld "$@"; } 44tc-getLD() { tc-getPROG LD ld "$@"; }
45# Returns the name of the strip prog
46tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
43# Returns the name of the symbol/object thingy 47# Returns the name of the symbol/object thingy
44tc-getNM() { tc-getPROG NM nm "$@"; } 48tc-getNM() { tc-getPROG NM nm "$@"; }
45# Returns the name of the archiver indexer 49# Returns the name of the archiver indexer
46tc-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 "$@"; }
53# Returns the name of the fortran 90 compiler
54tc-getF90() { tc-getPROG F90 gfortran "$@"; }
47# Returns the name of the fortran compiler 55# Returns the name of the fortran compiler
48tc-getF77() { tc-getPROG F77 f77 "$@"; } 56tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
49# Returns the name of the java compiler 57# Returns the name of the java compiler
50tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 58tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
51 59
52# Returns the name of the C compiler for build 60# Returns the name of the C compiler for build
53tc-getBUILD_CC() { 61tc-getBUILD_CC() {
62 70
63 local search= 71 local search=
64 if [[ -n ${CBUILD} ]] ; then 72 if [[ -n ${CBUILD} ]] ; then
65 search=$(type -p ${CBUILD}-gcc) 73 search=$(type -p ${CBUILD}-gcc)
66 search=${search##*/} 74 search=${search##*/}
67 else
68 search=gcc
69 fi 75 fi
76 search=${search:-gcc}
70 77
71 export BUILD_CC=${search} 78 export BUILD_CC=${search}
72 echo "${search}" 79 echo "${search}"
73} 80}
74 81
83# 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 ...
84tc-is-cross-compiler() { 91tc-is-cross-compiler() {
85 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 92 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
86} 93}
87 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}
88 114
89# Parse information from CBUILD/CHOST/CTARGET rather than 115# Parse information from CBUILD/CHOST/CTARGET rather than
90# use external variables from the profile. 116# use external variables from the profile.
91tc-ninja_magic_to_arch() { 117tc-ninja_magic_to_arch() {
92ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 118ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
95 local host=$2 121 local host=$2
96 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 122 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
97 123
98 case ${host} in 124 case ${host} in
99 alpha*) echo alpha;; 125 alpha*) echo alpha;;
100 x86_64*) ninj x86_64 amd64;;
101 arm*) echo arm;; 126 arm*) echo arm;;
127 bfin*) ninj blackfin bfin;;
128 cris*) echo cris;;
102 hppa*) ninj parisc hppa;; 129 hppa*) ninj parisc hppa;;
130 i?86*) ninj i386 x86;;
103 ia64*) echo ia64;; 131 ia64*) echo ia64;;
104 m68*) echo m68k;; 132 m68*) echo m68k;;
105 mips*) echo mips;; 133 mips*) echo mips;;
106 powerpc64*) echo ppc64;; 134 nios2*) echo nios2;;
135 nios*) echo nios;;
136 powerpc*)
137 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
138 # have been unified into simply 'powerpc', but until 2.6.16,
139 # ppc32 is still using ARCH="ppc" as default
140 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
141 echo powerpc
142 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
143 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
144 echo powerpc
145 else
146 echo ppc
147 fi
148 elif [[ ${host} == powerpc64* ]] ; then
149 echo ppc64
107 powerpc*) [[ ${PROFILE_ARCH} == "ppc64" ]] \ 150 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
108 && ninj ppc64 ppc \ 151 ninj ppc64 ppc
152 else
109 || echo ppc 153 echo ppc
154 fi
110 ;; 155 ;;
156 s390*) echo s390;;
157 sh64*) ninj sh64 sh;;
158 sh*) echo sh;;
111 sparc64*) ninj sparc64 sparc;; 159 sparc64*) ninj sparc64 sparc;;
112 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 160 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
113 && ninj sparc64 sparc \ 161 && ninj sparc64 sparc \
114 || echo sparc 162 || echo sparc
115 ;; 163 ;;
116 s390*) echo s390;; 164 vax*) echo vax;;
117 sh64*) ninj sh64 sh;; 165 x86_64*) ninj x86_64 amd64;;
118 sh*) echo sh;;
119 i?86*) ninj i386 x86;;
120 *) echo ${ARCH};; 166 *) echo ${ARCH};;
121 esac 167 esac
122} 168}
123tc-arch-kernel() { 169tc-arch-kernel() {
124 tc-ninja_magic_to_arch kern $@ 170 tc-ninja_magic_to_arch kern $@
125} 171}
126tc-arch() { 172tc-arch() {
127 tc-ninja_magic_to_arch portage $@ 173 tc-ninja_magic_to_arch portage $@
128} 174}
129tc-endian() {
130 local host=$1
131 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
132 host=${host%%-*}
133
134 case ${host} in
135 alpha*) echo big;;
136 x86_64*) echo little;;
137 arm*b*) echo big;;
138 arm*) echo little;;
139 hppa*) echo big;;
140 ia64*) echo little;;
141 m68*) echo big;;
142 mips*l*) echo little;;
143 mips*) echo big;;
144 powerpc*) echo big;;
145 sparc*) echo big;;
146 s390*) echo big;;
147 sh*b*) echo big;;
148 sh*) echo little;;
149 i?86*) echo little;;
150 *) echo wtf;;
151 esac
152}
153 175
154# Returns the version as by `$CC -dumpversion` 176# Returns the version as by `$CC -dumpversion`
155gcc-fullversion() { 177gcc-fullversion() {
156 echo "$($(tc-getCC) -dumpversion)" 178 $(tc-getCC "$@") -dumpversion
157} 179}
158# Returns the version, but only the <major>.<minor> 180# Returns the version, but only the <major>.<minor>
159gcc-version() { 181gcc-version() {
160 echo "$(gcc-fullversion | cut -f1,2 -d.)" 182 gcc-fullversion "$@" | cut -f1,2 -d.
161} 183}
162# Returns the Major version 184# Returns the Major version
163gcc-major-version() { 185gcc-major-version() {
164 echo "$(gcc-version | cut -f1 -d.)" 186 gcc-version "$@" | cut -f1 -d.
165} 187}
166# Returns the Minor version 188# Returns the Minor version
167gcc-minor-version() { 189gcc-minor-version() {
168 echo "$(gcc-version | cut -f2 -d.)" 190 gcc-version "$@" | cut -f2 -d.
169} 191}
170# Returns the Micro version 192# Returns the Micro version
171gcc-micro-version() { 193gcc-micro-version() {
172 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 194 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
173} 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}
174 207
208# Returns requested gcc specs directive unprocessed - for used by
209# gcc-specs-directive()
210# Note; later specs normally overwrite earlier ones; however if a later
211# spec starts with '+' then it appends.
212# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
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 $(gcc_install_dir)/specs so the result is the
217# same either way.
218_gcc-specs-directive_raw() {
219 local cc=$(tc-getCC)
220 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
221 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
222'BEGIN { pspec=""; spec=""; outside=1 }
223$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
224 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
225 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
226 { spec=spec $0 }
227END { print spec }'
228 return 0
229}
230
175# Returns requested gcc specs directive 231# Return the requested gcc specs directive, with all included
176# Note; if a spec exists more than once (e.g. in more than one specs file) 232# specs expanded.
177# the last one read is the active definition - i.e. they do not accumulate, 233# Note, it does not check for inclusion loops, which cause it
178# each new definition replaces any previous definition. 234# to never finish - but such loops are invalid for gcc and we're
235# assuming gcc is operational.
179gcc-specs-directive() { 236gcc-specs-directive() {
180 local specfiles=$($(tc-getCC) -v 2>&1 | grep "^Reading" | awk '{print $NF}') 237 local directive subdname subdirective
181 [[ -z ${specfiles} ]] && return 0 238 directive="$(_gcc-specs-directive_raw $1)"
182 awk -v spec=$1 \ 239 while [[ ${directive} == *%\(*\)* ]]; do
183'BEGIN { sstr=""; outside=1 } 240 subdname=${directive/*%\(}
184 $1=="*"spec":" { sstr=""; outside=0; next } 241 subdname=${subdname/\)*}
185 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next } 242 subdirective="$(_gcc-specs-directive_raw ${subdname})"
186 { sstr=sstr $0 } 243 directive="${directive//\%(${subdname})/${subdirective}}"
187END { print sstr }' ${specfiles} 244 done
245 echo "${directive}"
246 return 0
188} 247}
189 248
190# Returns true if gcc sets relro 249# Returns true if gcc sets relro
191gcc-specs-relro() { 250gcc-specs-relro() {
192 local directive 251 local directive
209gcc-specs-ssp() { 268gcc-specs-ssp() {
210 local directive 269 local directive
211 directive=$(gcc-specs-directive cc1) 270 directive=$(gcc-specs-directive cc1)
212 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 271 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
213} 272}
273# Returns true if gcc upgrades fstack-protector to fstack-protector-all
274gcc-specs-ssp-to-all() {
275 local directive
276 directive=$(gcc-specs-directive cc1)
277 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
278}
279
280
281# This function generate linker scripts in /usr/lib for dynamic
282# libs in /lib. This is to fix linking problems when you have
283# the .so in /lib, and the .a in /usr/lib. What happens is that
284# in some cases when linking dynamic, the .a in /usr/lib is used
285# instead of the .so in /lib due to gcc/libtool tweaking ld's
286# library search path. This cause many builds to fail.
287# See bug #4411 for more info.
288#
289# To use, simply call:
290#
291# gen_usr_ldscript libfoo.so
292#
293# Note that you should in general use the unversioned name of
294# the library, as ldconfig should usually update it correctly
295# to point to the latest version of the library present.
296gen_usr_ldscript() {
297 local lib libdir=$(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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