/[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 1.34 2005/03/10 22:43:11 eradicator Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.77 2008/06/01 08:56:56 aballier Exp $
4# 4
5# @ECLASS: toolchain-funcs.eclass
6# @MAINTAINER:
5# Author: Toolchain Ninjas <ninjas@gentoo.org> 7# Toolchain Ninjas <toolchain@gentoo.org>
6# 8# @BLURB: functions to query common info about the toolchain
7# This eclass contains (or should) functions to get common info 9# @DESCRIPTION:
8# about the toolchain (libc/compiler/binutils/etc...) 10# The toolchain-funcs aims to provide a complete suite of functions
11# for gleaning useful information about the toolchain and to simplify
12# ugly things like cross-compiling and multilib. All of this is done
13# in such a way that you can rely on the function always returning
14# something sane.
9 15
10inherit multilib 16___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11 17[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
12ECLASS=toolchain-funcs
13INHERITED="$INHERITED $ECLASS"
14 18
15DESCRIPTION="Based on the ${ECLASS} eclass" 19DESCRIPTION="Based on the ${ECLASS} eclass"
16 20
17tc-getPROG() { 21tc-getPROG() {
18 local var=$1 22 local var=$1
21 if [[ -n ${!var} ]] ; then 25 if [[ -n ${!var} ]] ; then
22 echo "${!var}" 26 echo "${!var}"
23 return 0 27 return 0
24 fi 28 fi
25 29
26 local chost=$3 30 local search=
27 [[ -z ${chost} ]] && chost=$(get_abi_CHOST) 31 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
28 [[ -z ${chost} ]] && chost=${CHOST} 32 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
29
30 if [[ -n ${chost} ]] ; then
31 local search=$(type -p "${chost}-${prog}")
32 [[ -n ${search} ]] && prog=${search##*/} 33 [[ -n ${search} ]] && prog=${search##*/}
33 fi
34 34
35 export ${var}=${prog} 35 export ${var}=${prog}
36 echo "${!var}" 36 echo "${!var}"
37} 37}
38 38
39# Returns the name of the archiver 39# @FUNCTION: tc-getAR
40# @USAGE: [toolchain prefix]
41# @RETURN: name of the archiver
40tc-getAR() { tc-getPROG AR ar "$@"; } 42tc-getAR() { tc-getPROG AR ar "$@"; }
41# Returns the name of the assembler 43# @FUNCTION: tc-getAS
44# @USAGE: [toolchain prefix]
45# @RETURN: name of the assembler
42tc-getAS() { tc-getPROG AS as "$@"; } 46tc-getAS() { tc-getPROG AS as "$@"; }
47# @FUNCTION: tc-getCC
48# @USAGE: [toolchain prefix]
43# Returns the name of the C compiler 49# @RETURN: name of the C compiler
44tc-getCC() { tc-getPROG CC gcc "$@"; } 50tc-getCC() { tc-getPROG CC gcc "$@"; }
51# @FUNCTION: tc-getCPP
52# @USAGE: [toolchain prefix]
53# @RETURN: name of the C preprocessor
54tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55# @FUNCTION: tc-getCXX
56# @USAGE: [toolchain prefix]
45# Returns the name of the C++ compiler 57# @RETURN: name of the C++ compiler
46tc-getCXX() { tc-getPROG CXX g++ "$@"; } 58tc-getCXX() { tc-getPROG CXX g++ "$@"; }
47# Returns the name of the linker 59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
48tc-getLD() { tc-getPROG LD ld "$@"; } 62tc-getLD() { tc-getPROG LD ld "$@"; }
63# @FUNCTION: tc-getSTRIP
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the strip program
66tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67# @FUNCTION: tc-getNM
68# @USAGE: [toolchain prefix]
49# Returns the name of the symbol/object thingy 69# @RETURN: name of the symbol/object thingy
50tc-getNM() { tc-getPROG NM nm "$@"; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
51# Returns the name of the archiver indexer 73# @RETURN: name of the archiver indexer
52tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } 74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
53# Returns the name of the fortran compiler 75# @FUNCTION: tc-getF77
76# @USAGE: [toolchain prefix]
77# @RETURN: name of the Fortran 77 compiler
54tc-getF77() { tc-getPROG F77 f77 "$@"; } 78tc-getF77() { tc-getPROG F77 f77 "$@"; }
79# @FUNCTION: tc-getF90
80# @USAGE: [toolchain prefix]
81# @RETURN: name of the Fortran 90 compiler
82tc-getF90() { tc-getPROG F90 gfortran "$@"; }
83# @FUNCTION: tc-getFORTRAN
84# @USAGE: [toolchain prefix]
85# @RETURN: name of the Fortran compiler
86tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
87# @FUNCTION: tc-getGCJ
88# @USAGE: [toolchain prefix]
55# Returns the name of the java compiler 89# @RETURN: name of the java compiler
56tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
57 91
58# Returns the name of the C compiler for build 92# @FUNCTION: tc-getBUILD_CC
93# @USAGE: [toolchain prefix]
94# @RETURN: name of the C compiler for building binaries to run on the build machine
59tc-getBUILD_CC() { 95tc-getBUILD_CC() {
96 local v
97 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
60 if [[ -n ${CC_FOR_BUILD} ]] ; then 98 if [[ -n ${!v} ]] ; then
61 export BUILD_CC=${CC_FOR_BUILD} 99 export BUILD_CC=${!v}
62 echo "${CC_FOR_BUILD}" 100 echo "${!v}"
63 return 0 101 return 0
64 fi 102 fi
103 done
65 104
66 local search= 105 local search=
67 if [[ -n ${CBUILD} ]] ; then 106 if [[ -n ${CBUILD} ]] ; then
68 search=$(type -p ${CBUILD}-gcc) 107 search=$(type -p ${CBUILD}-gcc)
69 search=${search##*/} 108 search=${search##*/}
70 else
71 search=gcc
72 fi 109 fi
110 search=${search:-gcc}
73 111
74 export BUILD_CC=${search} 112 export BUILD_CC=${search}
75 echo "${search}" 113 echo "${search}"
76} 114}
77 115
116# @FUNCTION: tc-export
117# @USAGE: <list of toolchain variables>
118# @DESCRIPTION:
78# Quick way to export a bunch of vars at once 119# Quick way to export a bunch of compiler vars at once.
79tc-export() { 120tc-export() {
80 local var 121 local var
81 for var in "$@" ; do 122 for var in "$@" ; do
82 eval tc-get${var} 123 eval tc-get${var} > /dev/null
83 done 124 done
84} 125}
85 126
86# A simple way to see if we're using a cross-compiler ... 127# @FUNCTION: tc-is-cross-compiler
128# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
87tc-is-cross-compiler() { 129tc-is-cross-compiler() {
88 if [[ -n ${CBUILD} ]] ; then
89 return $([[ ${CBUILD} != ${CHOST} ]]) 130 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
90 fi
91 return 1
92} 131}
93 132
133# @FUNCTION: tc-is-softfloat
134# @DESCRIPTION:
135# See if this toolchain is a softfloat based one.
136# @CODE
137# The possible return values:
138# - only: the target is always softfloat (never had fpu)
139# - yes: the target should support softfloat
140# - no: the target should support hardfloat
141# @CODE
142# This allows us to react differently where packages accept
143# softfloat flags in the case where support is optional, but
144# rejects softfloat flags where the target always lacks an fpu.
145tc-is-softfloat() {
146 case ${CTARGET} in
147 bfin*|h8300*)
148 echo "only" ;;
149 *)
150 [[ ${CTARGET//_/-} == *-softfloat-* ]] \
151 && echo "yes" \
152 || echo "no"
153 ;;
154 esac
155}
94 156
95# Parse information from CBUILD/CHOST/CTARGET rather than 157# Parse information from CBUILD/CHOST/CTARGET rather than
96# use external variables from the profile. 158# use external variables from the profile.
97tc-ninja_magic_to_arch() { 159tc-ninja_magic_to_arch() {
98ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 160ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
99 161
100 local type=$1 162 local type=$1
101 local host=$2 163 local host=$2
102 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 164 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
103 165
104 case ${host} in 166 case ${host} in
105 alpha*) echo alpha;; 167 alpha*) echo alpha;;
106 x86_64*) ninj x86_64 amd64;;
107 arm*) echo arm;; 168 arm*) echo arm;;
169 avr*) ninj avr32 avr;;
170 bfin*) ninj blackfin bfin;;
171 cris*) echo cris;;
108 hppa*) ninj parisc hppa;; 172 hppa*) ninj parisc hppa;;
173 i?86*)
174 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
175 # trees have been unified into 'x86'.
176 # FreeBSD still uses i386
177 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
178 echo i386
179 else
180 echo x86
181 fi
182 ;;
109 ia64*) echo ia64;; 183 ia64*) echo ia64;;
110 m68*) echo m68k;; 184 m68*) echo m68k;;
111 mips*) echo mips;; 185 mips*) echo mips;;
112 powerpc64*) echo ppc64;; 186 nios2*) echo nios2;;
113 powerpc*) echo ppc;; 187 nios*) echo nios;;
188 powerpc*)
189 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
190 # have been unified into simply 'powerpc', but until 2.6.16,
191 # ppc32 is still using ARCH="ppc" as default
192 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
193 echo powerpc
194 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
195 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
196 echo powerpc
197 else
198 echo ppc
199 fi
200 elif [[ ${host} == powerpc64* ]] ; then
201 echo ppc64
202 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
203 ninj ppc64 ppc
204 else
205 echo ppc
206 fi
207 ;;
208 s390*) echo s390;;
209 sh64*) ninj sh64 sh;;
210 sh*) echo sh;;
114 sparc64*) ninj sparc64 sparc;; 211 sparc64*) ninj sparc64 sparc;;
115 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 212 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
116 && ninj sparc64 sparc \ 213 && ninj sparc64 sparc \
117 || echo sparc 214 || echo sparc
118 ;; 215 ;;
119 s390*) echo s390;; 216 vax*) echo vax;;
120 sh64*) ninj sh64 sh;; 217 x86_64*)
121 sh*) echo sh;; 218 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
122 i?86*) ninj i386 x86;; 219 # trees have been unified into 'x86'.
123 *) echo ${ARCH};; 220 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
221 echo x86
222 else
223 ninj x86_64 amd64
224 fi
225 ;;
226
227 # since our usage of tc-arch is largely concerned with
228 # normalizing inputs for testing ${CTARGET}, let's filter
229 # other cross targets (mingw and such) into the unknown.
230 *) echo unknown;;
124 esac 231 esac
125} 232}
233# @FUNCTION: tc-arch-kernel
234# @USAGE: [toolchain prefix]
235# @RETURN: name of the kernel arch according to the compiler target
126tc-arch-kernel() { 236tc-arch-kernel() {
127 tc-ninja_magic_to_arch kern $@ 237 tc-ninja_magic_to_arch kern "$@"
128} 238}
239# @FUNCTION: tc-arch
240# @USAGE: [toolchain prefix]
241# @RETURN: name of the portage arch according to the compiler target
129tc-arch() { 242tc-arch() {
130 tc-ninja_magic_to_arch portage $@ 243 tc-ninja_magic_to_arch portage "$@"
131} 244}
245
132tc-endian() { 246tc-endian() {
133 local host=$1 247 local host=$1
134 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 248 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
135 host=${host%%-*} 249 host=${host%%-*}
136 250
137 case ${host} in 251 case ${host} in
138 alpha*) echo big;; 252 alpha*) echo big;;
139 x86_64*) echo little;;
140 arm*b*) echo big;; 253 arm*b*) echo big;;
141 arm*) echo little;; 254 arm*) echo little;;
255 cris*) echo little;;
142 hppa*) echo big;; 256 hppa*) echo big;;
257 i?86*) echo little;;
143 ia64*) echo little;; 258 ia64*) echo little;;
144 m68*) echo big;; 259 m68*) echo big;;
145 mips*l*) echo little;; 260 mips*l*) echo little;;
146 mips*) echo big;; 261 mips*) echo big;;
147 powerpc*) echo big;; 262 powerpc*) echo big;;
148 sparc*) echo big;;
149 s390*) echo big;; 263 s390*) echo big;;
150 sh*b*) echo big;; 264 sh*b*) echo big;;
151 sh*) echo little;; 265 sh*) echo little;;
266 sparc*) echo big;;
152 i?86*) echo little;; 267 x86_64*) echo little;;
153 *) echo wtf;; 268 *) echo wtf;;
154 esac 269 esac
155} 270}
156 271
157# Returns the version as by `$CC -dumpversion` 272# @FUNCTION: gcc-fullversion
273# @RETURN: compiler version (major.minor.micro: [3.4.6])
158gcc-fullversion() { 274gcc-fullversion() {
159 echo "$($(tc-getCC) -dumpversion)" 275 $(tc-getCC "$@") -dumpversion
160} 276}
161# Returns the version, but only the <major>.<minor> 277# @FUNCTION: gcc-version
278# @RETURN: compiler version (major.minor: [3.4].6)
162gcc-version() { 279gcc-version() {
163 echo "$(gcc-fullversion | cut -f1,2 -d.)" 280 gcc-fullversion "$@" | cut -f1,2 -d.
164} 281}
165# Returns the Major version 282# @FUNCTION: gcc-major-version
283# @RETURN: major compiler version (major: [3].4.6)
166gcc-major-version() { 284gcc-major-version() {
167 echo "$(gcc-version | cut -f1 -d.)" 285 gcc-version "$@" | cut -f1 -d.
168} 286}
169# Returns the Minor version 287# @FUNCTION: gcc-minor-version
288# @RETURN: minor compiler version (minor: 3.[4].6)
170gcc-minor-version() { 289gcc-minor-version() {
171 echo "$(gcc-version | cut -f2 -d.)" 290 gcc-version "$@" | cut -f2 -d.
172} 291}
173# Returns the Micro version 292# @FUNCTION: gcc-micro-version
293# @RETURN: micro compiler version (micro: 3.4.[6])
174gcc-micro-version() { 294gcc-micro-version() {
175 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 295 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
176} 296}
297
298# Returns the installation directory - internal toolchain
299# function for use by _gcc-specs-exists (for flag-o-matic).
300_gcc-install-dir() {
301 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
302 awk '$1=="install:" {print $2}')"
303}
304# Returns true if the indicated specs file exists - internal toolchain
305# function for use by flag-o-matic.
306_gcc-specs-exists() {
307 [[ -f $(_gcc-install-dir)/$1 ]]
308}
309
310# Returns requested gcc specs directive unprocessed - for used by
311# gcc-specs-directive()
312# Note; later specs normally overwrite earlier ones; however if a later
313# spec starts with '+' then it appends.
314# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
315# as "Reading <file>", in order. Strictly speaking, if there's a
316# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
317# the same token anything from 'gcc -dumpspecs' is overridden by
318# the contents of $(gcc_install_dir)/specs so the result is the
319# same either way.
320_gcc-specs-directive_raw() {
321 local cc=$(tc-getCC)
322 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
323 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
324'BEGIN { pspec=""; spec=""; outside=1 }
325$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
326 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
327 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
328 { spec=spec $0 }
329END { print spec }'
330 return 0
331}
332
333# Return the requested gcc specs directive, with all included
334# specs expanded.
335# Note, it does not check for inclusion loops, which cause it
336# to never finish - but such loops are invalid for gcc and we're
337# assuming gcc is operational.
338gcc-specs-directive() {
339 local directive subdname subdirective
340 directive="$(_gcc-specs-directive_raw $1)"
341 while [[ ${directive} == *%\(*\)* ]]; do
342 subdname=${directive/*%\(}
343 subdname=${subdname/\)*}
344 subdirective="$(_gcc-specs-directive_raw ${subdname})"
345 directive="${directive//\%(${subdname})/${subdirective}}"
346 done
347 echo "${directive}"
348 return 0
349}
350
351# Returns true if gcc sets relro
352gcc-specs-relro() {
353 local directive
354 directive=$(gcc-specs-directive link_command)
355 return $([[ ${directive/\{!norelro:} != ${directive} ]])
356}
357# Returns true if gcc sets now
358gcc-specs-now() {
359 local directive
360 directive=$(gcc-specs-directive link_command)
361 return $([[ ${directive/\{!nonow:} != ${directive} ]])
362}
363# Returns true if gcc builds PIEs
364gcc-specs-pie() {
365 local directive
366 directive=$(gcc-specs-directive cc1)
367 return $([[ ${directive/\{!nopie:} != ${directive} ]])
368}
369# Returns true if gcc builds with the stack protector
370gcc-specs-ssp() {
371 local directive
372 directive=$(gcc-specs-directive cc1)
373 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
374}
375# Returns true if gcc upgrades fstack-protector to fstack-protector-all
376gcc-specs-ssp-to-all() {
377 local directive
378 directive=$(gcc-specs-directive cc1)
379 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
380}
381
382
383# @FUNCTION: gen_usr_ldscript
384# @USAGE: <list of libs to create linker scripts for>
385# @DESCRIPTION:
386# This function generate linker scripts in /usr/lib for dynamic
387# libs in /lib. This is to fix linking problems when you have
388# the .so in /lib, and the .a in /usr/lib. What happens is that
389# in some cases when linking dynamic, the .a in /usr/lib is used
390# instead of the .so in /lib due to gcc/libtool tweaking ld's
391# library search path. This causes many builds to fail.
392# See bug #4411 for more info.
393#
394# Note that you should in general use the unversioned name of
395# the library (libfoo.so), as ldconfig should usually update it
396# correctly to point to the latest version of the library present.
397gen_usr_ldscript() {
398 local lib libdir=$(get_libdir) output_format=""
399 # Just make sure it exists
400 dodir /usr/${libdir}
401
402 # OUTPUT_FORMAT gives hints to the linker as to what binary format
403 # is referenced ... makes multilib saner
404 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
405 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
406
407 for lib in "$@" ; do
408 if [[ ${USERLAND} == "Darwin" ]] ; then
409 ewarn "Not creating fake dynamic library for $lib on Darwin;"
410 ewarn "making a symlink instead."
411 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
412 else
413 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
414 /* GNU ld script
415 Since Gentoo has critical dynamic libraries
416 in /lib, and the static versions in /usr/lib,
417 we need to have a "fake" dynamic lib in /usr/lib,
418 otherwise we run into linking problems.
419
420 See bug http://bugs.gentoo.org/4411 for more info.
421 */
422 ${output_format}
423 GROUP ( /${libdir}/${lib} )
424 END_LDSCRIPT
425 fi
426 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
427 done
428}

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