/[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 1.60 2006/08/19 13:52:02 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:
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 ; }
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 arm*) echo arm;; 168 arm*) echo arm;;
169 avr*) ninj avr32 avr;;
107 bfin*) ninj blackfin bfin;; 170 bfin*) ninj blackfin bfin;;
108 cris*) echo cris;; 171 cris*) echo cris;;
109 hppa*) ninj parisc hppa;; 172 hppa*) ninj parisc hppa;;
110 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 ;;
111 ia64*) echo ia64;; 183 ia64*) echo ia64;;
112 m68*) echo m68k;; 184 m68*) echo m68k;;
113 mips*) echo mips;; 185 mips*) echo mips;;
114 nios2*) echo nios2;; 186 nios2*) echo nios2;;
115 nios*) echo nios;; 187 nios*) echo nios;;
140 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 212 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
141 && ninj sparc64 sparc \ 213 && ninj sparc64 sparc \
142 || echo sparc 214 || echo sparc
143 ;; 215 ;;
144 vax*) echo vax;; 216 vax*) echo vax;;
145 x86_64*) ninj x86_64 amd64;; 217 x86_64*)
146 *) 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;;
147 esac 231 esac
148} 232}
233# @FUNCTION: tc-arch-kernel
234# @USAGE: [toolchain prefix]
235# @RETURN: name of the kernel arch according to the compiler target
149tc-arch-kernel() { 236tc-arch-kernel() {
150 tc-ninja_magic_to_arch kern $@ 237 tc-ninja_magic_to_arch kern "$@"
151} 238}
239# @FUNCTION: tc-arch
240# @USAGE: [toolchain prefix]
241# @RETURN: name of the portage arch according to the compiler target
152tc-arch() { 242tc-arch() {
153 tc-ninja_magic_to_arch portage $@ 243 tc-ninja_magic_to_arch portage "$@"
154} 244}
245
155tc-endian() { 246tc-endian() {
156 local host=$1 247 local host=$1
157 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 248 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
158 host=${host%%-*} 249 host=${host%%-*}
159 250
176 x86_64*) echo little;; 267 x86_64*) echo little;;
177 *) echo wtf;; 268 *) echo wtf;;
178 esac 269 esac
179} 270}
180 271
181# Returns the version as by `$CC -dumpversion` 272# @FUNCTION: gcc-fullversion
273# @RETURN: compiler version (major.minor.micro: [3.4.6])
182gcc-fullversion() { 274gcc-fullversion() {
183 echo "$($(tc-getCC) -dumpversion)" 275 $(tc-getCC "$@") -dumpversion
184} 276}
185# Returns the version, but only the <major>.<minor> 277# @FUNCTION: gcc-version
278# @RETURN: compiler version (major.minor: [3.4].6)
186gcc-version() { 279gcc-version() {
187 echo "$(gcc-fullversion | cut -f1,2 -d.)" 280 gcc-fullversion "$@" | cut -f1,2 -d.
188} 281}
189# Returns the Major version 282# @FUNCTION: gcc-major-version
283# @RETURN: major compiler version (major: [3].4.6)
190gcc-major-version() { 284gcc-major-version() {
191 echo "$(gcc-version | cut -f1 -d.)" 285 gcc-version "$@" | cut -f1 -d.
192} 286}
193# Returns the Minor version 287# @FUNCTION: gcc-minor-version
288# @RETURN: minor compiler version (minor: 3.[4].6)
194gcc-minor-version() { 289gcc-minor-version() {
195 echo "$(gcc-version | cut -f2 -d.)" 290 gcc-version "$@" | cut -f2 -d.
196} 291}
197# Returns the Micro version 292# @FUNCTION: gcc-micro-version
293# @RETURN: micro compiler version (micro: 3.4.[6])
198gcc-micro-version() { 294gcc-micro-version() {
199 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 295 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
200} 296}
201 297
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
202# Returns requested gcc specs directive 310# Returns requested gcc specs directive unprocessed - for used by
311# gcc-specs-directive()
203# Note; later specs normally overwrite earlier ones; however if a later 312# Note; later specs normally overwrite earlier ones; however if a later
204# spec starts with '+' then it appends. 313# spec starts with '+' then it appends.
205# 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"
206# 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 $(gcc_install_dir)/specs so the result is the
319# same either way.
207gcc-specs-directive() { 320_gcc-specs-directive_raw() {
208 local cc=$(tc-getCC) 321 local cc=$(tc-getCC)
209 local specfiles=$(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}')
210 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ 323 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
211'BEGIN { pspec=""; spec=""; outside=1 } 324'BEGIN { pspec=""; spec=""; outside=1 }
212$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 325$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
215 { spec=spec $0 } 328 { spec=spec $0 }
216END { print spec }' 329END { print spec }'
217 return 0 330 return 0
218} 331}
219 332
333# Return the requested gcc specs directive, with all included
334# specs expanded.
335# Note, it does not check for inclusion loops, which cause it
336# to never finish - but such loops are invalid for gcc and we're
337# assuming gcc is operational.
338gcc-specs-directive() {
339 local directive subdname subdirective
340 directive="$(_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 "${directive}"
348 return 0
349}
350
220# Returns true if gcc sets relro 351# Returns true if gcc sets relro
221gcc-specs-relro() { 352gcc-specs-relro() {
222 local directive 353 local directive
223 directive=$(gcc-specs-directive link_command) 354 directive=$(gcc-specs-directive link_command)
224 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 355 return $([[ ${directive/\{!norelro:} != ${directive} ]])
247 directive=$(gcc-specs-directive cc1) 378 directive=$(gcc-specs-directive cc1)
248 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 379 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
249} 380}
250 381
251 382
383# @FUNCTION: gen_usr_ldscript
384# @USAGE: <list of libs to create linker scripts for>
385# @DESCRIPTION:
252# This function generate linker scripts in /usr/lib for dynamic 386# This function generate linker scripts in /usr/lib for dynamic
253# libs in /lib. This is to fix linking problems when you have 387# libs in /lib. This is to fix linking problems when you have
254# the .so in /lib, and the .a in /usr/lib. What happens is that 388# the .so in /lib, and the .a in /usr/lib. What happens is that
255# in some cases when linking dynamic, the .a in /usr/lib is used 389# in some cases when linking dynamic, the .a in /usr/lib is used
256# instead of the .so in /lib due to gcc/libtool tweaking ld's 390# instead of the .so in /lib due to gcc/libtool tweaking ld's
257# library search path. This cause many builds to fail. 391# library search path. This causes many builds to fail.
258# See bug #4411 for more info. 392# See bug #4411 for more info.
259# 393#
260# To use, simply call:
261#
262# gen_usr_ldscript libfoo.so
263#
264# Note that you should in general use the unversioned name of 394# Note that you should in general use the unversioned name of
265# the library, as ldconfig should usually update it correctly 395# the library (libfoo.so), as ldconfig should usually update it
266# to point to the latest version of the library present. 396# correctly to point to the latest version of the library present.
267_tc_gen_usr_ldscript() { 397gen_usr_ldscript() {
268 local lib libdir=$(get_libdir) output_format="" 398 local lib libdir=$(get_libdir) output_format=""
269 # Just make sure it exists 399 # Just make sure it exists
270 dodir /usr/${libdir} 400 dodir /usr/${libdir}
271 401
272 # OUTPUT_FORMAT gives hints to the linker as to what binary format 402 # OUTPUT_FORMAT gives hints to the linker as to what binary format
273 # is referenced ... makes multilib saner 403 # is referenced ... makes multilib saner
274 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 404 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
275 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 405 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
276 406
277 for lib in "$@" ; do 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}/${lib}"
412 else
278 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 413 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
279 /* GNU ld script 414 /* GNU ld script
280 Since Gentoo has critical dynamic libraries 415 Since Gentoo has critical dynamic libraries
281 in /lib, and the static versions in /usr/lib, 416 in /lib, and the static versions in /usr/lib,
282 we need to have a "fake" dynamic lib in /usr/lib, 417 we need to have a "fake" dynamic lib in /usr/lib,
283 otherwise we run into linking problems. 418 otherwise we run into linking problems.
284 419
285 See bug http://bugs.gentoo.org/4411 for more info. 420 See bug http://bugs.gentoo.org/4411 for more info.
286 */ 421 */
287 ${output_format} 422 ${output_format}
288 GROUP ( /${libdir}/${lib} ) 423 GROUP ( /${libdir}/${lib} )
289 END_LDSCRIPT 424 END_LDSCRIPT
425 fi
290 fperms a+x "/usr/${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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