/[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 1.66 2007/02/16 00:12:02 vapier 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 <toolchain@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"
17[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
11 18
12DESCRIPTION="Based on the ${ECLASS} eclass" 19DESCRIPTION="Based on the ${ECLASS} eclass"
13 20
14tc-getPROG() { 21tc-getPROG() {
15 local var=$1 22 local var=$1
27 34
28 export ${var}=${prog} 35 export ${var}=${prog}
29 echo "${!var}" 36 echo "${!var}"
30} 37}
31 38
32# Returns the name of the archiver 39# @FUNCTION: tc-getAR
40# @USAGE: [toolchain prefix]
41# @RETURN: name of the archiver
33tc-getAR() { tc-getPROG AR ar "$@"; } 42tc-getAR() { tc-getPROG AR ar "$@"; }
34# Returns the name of the assembler 43# @FUNCTION: tc-getAS
44# @USAGE: [toolchain prefix]
45# @RETURN: name of the assembler
35tc-getAS() { tc-getPROG AS as "$@"; } 46tc-getAS() { tc-getPROG AS as "$@"; }
47# @FUNCTION: tc-getCC
48# @USAGE: [toolchain prefix]
36# Returns the name of the C compiler 49# @RETURN: name of the C compiler
37tc-getCC() { tc-getPROG CC gcc "$@"; } 50tc-getCC() { tc-getPROG CC gcc "$@"; }
51# @FUNCTION: tc-getCPP
52# @USAGE: [toolchain prefix]
38# Returns the name of the C preprocessor 53# @RETURN: name of the C preprocessor
39tc-getCPP() { tc-getPROG CPP cpp "$@"; } 54tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55# @FUNCTION: tc-getCXX
56# @USAGE: [toolchain prefix]
40# Returns the name of the C++ compiler 57# @RETURN: name of the C++ compiler
41tc-getCXX() { tc-getPROG CXX g++ "$@"; } 58tc-getCXX() { tc-getPROG CXX g++ "$@"; }
42# Returns the name of the linker 59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
43tc-getLD() { tc-getPROG LD ld "$@"; } 62tc-getLD() { tc-getPROG LD ld "$@"; }
44# Returns the name of the strip prog 63# @FUNCTION: tc-getSTRIP
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the strip program
45tc-getSTRIP() { tc-getPROG STRIP strip "$@"; } 66tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67# @FUNCTION: tc-getNM
68# @USAGE: [toolchain prefix]
46# Returns the name of the symbol/object thingy 69# @RETURN: name of the symbol/object thingy
47tc-getNM() { tc-getPROG NM nm "$@"; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
48# Returns the name of the archiver indexer 73# @RETURN: name of the archiver indexer
49tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } 74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
75# @FUNCTION: tc-getF77
76# @USAGE: [toolchain prefix]
50# Returns the name of the fortran 77 compiler 77# @RETURN: name of the Fortran 77 compiler
51tc-getF77() { tc-getPROG F77 f77 "$@"; } 78tc-getF77() { tc-getPROG F77 f77 "$@"; }
79# @FUNCTION: tc-getF90
80# @USAGE: [toolchain prefix]
52# Returns the name of the fortran 90 compiler 81# @RETURN: name of the Fortran 90 compiler
53tc-getF90() { tc-getPROG F90 gfortran "$@"; } 82tc-getF90() { tc-getPROG F90 gfortran "$@"; }
83# @FUNCTION: tc-getFORTRAN
84# @USAGE: [toolchain prefix]
54# Returns the name of the fortran compiler 85# @RETURN: name of the Fortran compiler
55tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; } 86tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
87# @FUNCTION: tc-getGCJ
88# @USAGE: [toolchain prefix]
56# Returns the name of the java compiler 89# @RETURN: name of the java compiler
57tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
58 91
59# 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
60tc-getBUILD_CC() { 95tc-getBUILD_CC() {
61 local v 96 local v
62 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do 97 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
63 if [[ -n ${!v} ]] ; then 98 if [[ -n ${!v} ]] ; then
64 export BUILD_CC=${!v} 99 export BUILD_CC=${!v}
76 111
77 export BUILD_CC=${search} 112 export BUILD_CC=${search}
78 echo "${search}" 113 echo "${search}"
79} 114}
80 115
116# @FUNCTION: tc-export
117# @USAGE: <list of toolchain variables>
118# @DESCRIPTION:
81# Quick way to export a bunch of vars at once 119# Quick way to export a bunch of compiler vars at once.
82tc-export() { 120tc-export() {
83 local var 121 local var
84 for var in "$@" ; do 122 for var in "$@" ; do
85 eval tc-get${var} > /dev/null 123 eval tc-get${var} > /dev/null
86 done 124 done
87} 125}
88 126
89# 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
90tc-is-cross-compiler() { 129tc-is-cross-compiler() {
91 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 130 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
92} 131}
93 132
133# @FUNCTION: tc-is-softfloat
134# @DESCRIPTION:
94# See if this toolchain is a softfloat based one. 135# See if this toolchain is a softfloat based one.
136# @CODE
95# The possible return values: 137# The possible return values:
96# - only: the target is always softfloat (never had fpu) 138# - only: the target is always softfloat (never had fpu)
97# - yes: the target should support softfloat 139# - yes: the target should support softfloat
98# - no: the target should support hardfloat 140# - no: the target should support hardfloat
141# @CODE
99# This allows us to react differently where packages accept 142# This allows us to react differently where packages accept
100# softfloat flags in the case where support is optional, but 143# softfloat flags in the case where support is optional, but
101# rejects softfloat flags where the target always lacks an fpu. 144# rejects softfloat flags where the target always lacks an fpu.
102tc-is-softfloat() { 145tc-is-softfloat() {
103 case ${CTARGET} in 146 case ${CTARGET} in
121 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 164 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
122 165
123 case ${host} in 166 case ${host} in
124 alpha*) echo alpha;; 167 alpha*) echo alpha;;
125 arm*) echo arm;; 168 arm*) echo arm;;
169 avr*) ninj avr32 avr;;
126 bfin*) ninj blackfin bfin;; 170 bfin*) ninj blackfin bfin;;
127 cris*) echo cris;; 171 cris*) echo cris;;
128 hppa*) ninj parisc hppa;; 172 hppa*) ninj parisc hppa;;
129 i?86*) ninj i386 x86;; 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 ;;
130 ia64*) echo ia64;; 183 ia64*) echo ia64;;
131 m68*) echo m68k;; 184 m68*) echo m68k;;
132 mips*) echo mips;; 185 mips*) echo mips;;
133 nios2*) echo nios2;; 186 nios2*) echo nios2;;
134 nios*) echo nios;; 187 nios*) echo nios;;
159 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 212 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
160 && ninj sparc64 sparc \ 213 && ninj sparc64 sparc \
161 || echo sparc 214 || echo sparc
162 ;; 215 ;;
163 vax*) echo vax;; 216 vax*) echo vax;;
164 x86_64*) ninj x86_64 amd64;; 217 x86_64*)
165 *) echo ${ARCH};; 218 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
219 # trees have been unified into 'x86'.
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;;
166 esac 231 esac
167} 232}
233# @FUNCTION: tc-arch-kernel
234# @USAGE: [toolchain prefix]
235# @RETURN: name of the kernel arch according to the compiler target
168tc-arch-kernel() { 236tc-arch-kernel() {
169 tc-ninja_magic_to_arch kern $@ 237 tc-ninja_magic_to_arch kern "$@"
170} 238}
239# @FUNCTION: tc-arch
240# @USAGE: [toolchain prefix]
241# @RETURN: name of the portage arch according to the compiler target
171tc-arch() { 242tc-arch() {
172 tc-ninja_magic_to_arch portage $@ 243 tc-ninja_magic_to_arch portage "$@"
173} 244}
174 245
175# Returns the version as by `$CC -dumpversion` 246tc-endian() {
247 local host=$1
248 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
249 host=${host%%-*}
250
251 case ${host} in
252 alpha*) echo big;;
253 arm*b*) echo big;;
254 arm*) echo little;;
255 cris*) echo little;;
256 hppa*) echo big;;
257 i?86*) echo little;;
258 ia64*) echo little;;
259 m68*) echo big;;
260 mips*l*) echo little;;
261 mips*) echo big;;
262 powerpc*) echo big;;
263 s390*) echo big;;
264 sh*b*) echo big;;
265 sh*) echo little;;
266 sparc*) echo big;;
267 x86_64*) echo little;;
268 *) echo wtf;;
269 esac
270}
271
272# @FUNCTION: gcc-fullversion
273# @RETURN: compiler version (major.minor.micro: [3.4.6])
176gcc-fullversion() { 274gcc-fullversion() {
177 $(tc-getCC "$@") -dumpversion 275 $(tc-getCC "$@") -dumpversion
178} 276}
179# Returns the version, but only the <major>.<minor> 277# @FUNCTION: gcc-version
278# @RETURN: compiler version (major.minor: [3.4].6)
180gcc-version() { 279gcc-version() {
181 gcc-fullversion "$@" | cut -f1,2 -d. 280 gcc-fullversion "$@" | cut -f1,2 -d.
182} 281}
183# Returns the Major version 282# @FUNCTION: gcc-major-version
283# @RETURN: major compiler version (major: [3].4.6)
184gcc-major-version() { 284gcc-major-version() {
185 gcc-version "$@" | cut -f1 -d. 285 gcc-version "$@" | cut -f1 -d.
186} 286}
187# Returns the Minor version 287# @FUNCTION: gcc-minor-version
288# @RETURN: minor compiler version (minor: 3.[4].6)
188gcc-minor-version() { 289gcc-minor-version() {
189 gcc-version "$@" | cut -f2 -d. 290 gcc-version "$@" | cut -f2 -d.
190} 291}
191# Returns the Micro version 292# @FUNCTION: gcc-micro-version
293# @RETURN: micro compiler version (micro: 3.4.[6])
192gcc-micro-version() { 294gcc-micro-version() {
193 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- 295 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
194} 296}
195 297
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
196# Returns requested gcc specs directive 310# Returns requested gcc specs directive unprocessed - for used by
311# gcc-specs-directive()
197# Note; later specs normally overwrite earlier ones; however if a later 312# Note; later specs normally overwrite earlier ones; however if a later
198# spec starts with '+' then it appends. 313# spec starts with '+' then it appends.
199# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" 314# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
200# as "Reading <file>", in order. 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 $(gcc_install_dir)/specs so the result is the
319# same either way.
201gcc-specs-directive() { 320_gcc-specs-directive_raw() {
202 local cc=$(tc-getCC) 321 local cc=$(tc-getCC)
203 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}') 322 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
204 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ 323 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
205'BEGIN { pspec=""; spec=""; outside=1 } 324'BEGIN { pspec=""; spec=""; outside=1 }
206$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 325$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
209 { spec=spec $0 } 328 { spec=spec $0 }
210END { print spec }' 329END { print spec }'
211 return 0 330 return 0
212} 331}
213 332
333# Return the requested gcc specs directive, with all included
334# specs expanded.
335# Note, it does not check for inclusion loops, which cause it
336# to never finish - but such loops are invalid for gcc and we're
337# assuming gcc is operational.
338gcc-specs-directive() {
339 local directive subdname subdirective
340 directive="$(_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 "${directive}"
348 return 0
349}
350
214# Returns true if gcc sets relro 351# Returns true if gcc sets relro
215gcc-specs-relro() { 352gcc-specs-relro() {
216 local directive 353 local directive
217 directive=$(gcc-specs-directive link_command) 354 directive=$(gcc-specs-directive link_command)
218 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 355 return $([[ ${directive/\{!norelro:} != ${directive} ]])
241 directive=$(gcc-specs-directive cc1) 378 directive=$(gcc-specs-directive cc1)
242 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 379 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
243} 380}
244 381
245 382
383# @FUNCTION: gen_usr_ldscript
384# @USAGE: <list of libs to create linker scripts for>
385# @DESCRIPTION:
246# This function generate linker scripts in /usr/lib for dynamic 386# This function generate linker scripts in /usr/lib for dynamic
247# libs in /lib. This is to fix linking problems when you have 387# libs in /lib. This is to fix linking problems when you have
248# the .so in /lib, and the .a in /usr/lib. What happens is that 388# the .so in /lib, and the .a in /usr/lib. What happens is that
249# in some cases when linking dynamic, the .a in /usr/lib is used 389# in some cases when linking dynamic, the .a in /usr/lib is used
250# instead of the .so in /lib due to gcc/libtool tweaking ld's 390# instead of the .so in /lib due to gcc/libtool tweaking ld's
251# library search path. This cause many builds to fail. 391# library search path. This causes many builds to fail.
252# See bug #4411 for more info. 392# See bug #4411 for more info.
253# 393#
254# To use, simply call:
255#
256# gen_usr_ldscript libfoo.so
257#
258# Note that you should in general use the unversioned name of 394# Note that you should in general use the unversioned name of
259# the library, as ldconfig should usually update it correctly 395# the library (libfoo.so), as ldconfig should usually update it
260# to point to the latest version of the library present. 396# correctly to point to the latest version of the library present.
261_tc_gen_usr_ldscript() { 397gen_usr_ldscript() {
262 local lib libdir=$(get_libdir) output_format="" 398 local lib libdir=$(get_libdir) output_format=""
263 # Just make sure it exists 399 # Just make sure it exists
264 dodir /usr/${libdir} 400 dodir /usr/${libdir}
265 401
266 # OUTPUT_FORMAT gives hints to the linker as to what binary format 402 # OUTPUT_FORMAT gives hints to the linker as to what binary format
288 END_LDSCRIPT 424 END_LDSCRIPT
289 fi 425 fi
290 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" 426 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
291 done 427 done
292} 428}
293gen_usr_ldscript() { _tc_gen_usr_ldscript "$@" ; }

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