/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2004 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 1.19 2005/01/10 02:41:58 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.75 2008/01/02 01:01:03 vapier 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 eutils 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 if [[ -n ${CHOST} ]] ; then 30 local search=
27 local search=$(type -p "${CHOST}-${prog}") 31 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
32 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
28 [[ -n ${search} ]] && prog=${search##*/} 33 [[ -n ${search} ]] && prog=${search##*/}
29 fi
30 34
31 export ${var}=${prog} 35 export ${var}=${prog}
32 echo "${!var}" 36 echo "${!var}"
33} 37}
34 38
35# Returns the name of the archiver 39# @FUNCTION: tc-getAR
40# @USAGE: [toolchain prefix]
41# @RETURN: name of the archiver
36tc-getAR() { tc-getPROG AR ar; } 42tc-getAR() { tc-getPROG AR ar "$@"; }
37# Returns the name of the assembler 43# @FUNCTION: tc-getAS
44# @USAGE: [toolchain prefix]
45# @RETURN: name of the assembler
38tc-getAS() { tc-getPROG AS as; } 46tc-getAS() { tc-getPROG AS as "$@"; }
47# @FUNCTION: tc-getCC
48# @USAGE: [toolchain prefix]
39# Returns the name of the C compiler 49# @RETURN: name of the C compiler
40tc-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]
41# Returns the name of the C++ compiler 57# @RETURN: name of the C++ compiler
42tc-getCXX() { tc-getPROG CXX g++; } 58tc-getCXX() { tc-getPROG CXX g++ "$@"; }
43# Returns the name of the linker 59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
44tc-getLD() { tc-getPROG LD ld; } 62tc-getLD() { tc-getPROG LD ld "$@"; }
63# @FUNCTION: tc-getSTRIP
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the strip program
66tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67# @FUNCTION: tc-getNM
68# @USAGE: [toolchain prefix]
45# Returns the name of the symbol/object thingy 69# @RETURN: name of the symbol/object thingy
46tc-getNM() { tc-getPROG NM nm; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
47# Returns the name of the archiver indexer 73# @RETURN: name of the archiver indexer
48tc-getRANLIB() { tc-getPROG RANLIB ranlib; } 74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
49# Returns the name of the fortran compiler 75# @FUNCTION: tc-getF77
76# @USAGE: [toolchain prefix]
77# @RETURN: name of the Fortran 77 compiler
50tc-getF77() { tc-getPROG F77 f77; } 78tc-getF77() { tc-getPROG F77 f77 "$@"; }
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]
51# Returns the name of the java compiler 89# @RETURN: name of the java compiler
52tc-getGCJ() { tc-getPROG GCJ gcj; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
53 91
54# 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
55tc-getBUILD_CC() { 95tc-getBUILD_CC() {
96 local v
97 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
56 if [[ -n ${CC_FOR_BUILD} ]] ; then 98 if [[ -n ${!v} ]] ; then
57 export BUILD_CC=${CC_FOR_BUILD} 99 export BUILD_CC=${!v}
58 echo "${CC_FOR_BUILD}" 100 echo "${!v}"
59 return 0 101 return 0
60 fi 102 fi
103 done
61 104
62 local search= 105 local search=
63 if [[ -n ${CBUILD} ]] ; then 106 if [[ -n ${CBUILD} ]] ; then
64 search=$(type -p "${CBUILD}-gcc") 107 search=$(type -p ${CBUILD}-gcc)
65 search=${search##*/} 108 search=${search##*/}
66 else
67 search=gcc
68 fi 109 fi
110 search=${search:-gcc}
69 111
70 export BUILD_CC=${search} 112 export BUILD_CC=${search}
71 echo "${search}" 113 echo "${search}"
72} 114}
73 115
116# @FUNCTION: tc-export
117# @USAGE: <list of toolchain variables>
118# @DESCRIPTION:
74# Quick way to export a bunch of vars at once 119# Quick way to export a bunch of compiler vars at once.
75tc-export() { 120tc-export() {
76 local var 121 local var
77 for var in "$@" ; do 122 for var in "$@" ; do
78 eval tc-get${var} 123 eval tc-get${var} > /dev/null
79 done 124 done
80} 125}
81 126
82# 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
83tc-is-cross-compiler() { 129tc-is-cross-compiler() {
84 if [[ -n ${CBUILD} ]] ; then
85 return $([[ ${CBUILD} != ${CHOST} ]]) 130 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
86 fi
87 return 1
88} 131}
89 132
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}
90 156
91# Translate a CBUILD/CHOST/CTARGET into the kernel/portage 157# Parse information from CBUILD/CHOST/CTARGET rather than
92# equivalent of $ARCH 158# use external variables from the profile.
93ninja_magic_to_arch() { 159tc-ninja_magic_to_arch() {
94ninj() { [[ ${type} = "kern" ]] && echo $1 || echo $2 ; } 160ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
95 161
96 local type=$1 162 local type=$1
97 local host=$2 163 local host=$2
164 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
98 165
99 case ${host} in 166 case ${host} in
100 alpha*) echo alpha;; 167 alpha*) echo alpha;;
101 x86_64*) ninj x86_64 amd64;;
102 arm*) echo arm;; 168 arm*) echo arm;;
169 avr*) ninj avr32 avr;;
170 bfin*) ninj blackfin bfin;;
171 cris*) echo cris;;
103 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 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) ]] ; then
177 echo i386
178 else
179 echo x86
180 fi
181 ;;
104 ia64*) echo ia64;; 182 ia64*) echo ia64;;
183 m68*) echo m68k;;
105 mips*) echo mips;; 184 mips*) echo mips;;
106 powerpc64*) echo ppc64;; 185 nios2*) echo nios2;;
107 powerpc*) echo ppc;; 186 nios*) echo nios;;
108 sparc64*) ninj sparc64 sparc;; 187 powerpc*)
109 sparc*) echo sparc;; 188 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
189 # have been unified into simply 'powerpc', but until 2.6.16,
190 # ppc32 is still using ARCH="ppc" as default
191 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
192 echo powerpc
193 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
194 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
195 echo powerpc
196 else
197 echo ppc
198 fi
199 elif [[ ${host} == powerpc64* ]] ; then
200 echo ppc64
201 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
202 ninj ppc64 ppc
203 else
204 echo ppc
205 fi
206 ;;
110 s390*) echo s390;; 207 s390*) echo s390;;
111 sh64*) ninj sh64 sh;; 208 sh64*) ninj sh64 sh;;
112 sh*) echo sh;; 209 sh*) echo sh;;
210 sparc64*) ninj sparc64 sparc;;
211 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
212 && ninj sparc64 sparc \
213 || echo sparc
214 ;;
215 vax*) echo vax;;
216 x86_64*)
217 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
218 # trees have been unified into 'x86'.
219 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
220 echo x86
221 else
222 ninj x86_64 amd64
223 fi
224 ;;
225
226 # since our usage of tc-arch is largely concerned with
227 # normalizing inputs for testing ${CTARGET}, let's filter
228 # other cross targets (mingw and such) into the unknown.
229 *) echo unknown;;
230 esac
231}
232# @FUNCTION: tc-arch-kernel
233# @USAGE: [toolchain prefix]
234# @RETURN: name of the kernel arch according to the compiler target
235tc-arch-kernel() {
236 tc-ninja_magic_to_arch kern "$@"
237}
238# @FUNCTION: tc-arch
239# @USAGE: [toolchain prefix]
240# @RETURN: name of the portage arch according to the compiler target
241tc-arch() {
242 tc-ninja_magic_to_arch portage "$@"
243}
244
245tc-endian() {
246 local host=$1
247 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
248 host=${host%%-*}
249
250 case ${host} in
251 alpha*) echo big;;
252 arm*b*) echo big;;
253 arm*) echo little;;
254 cris*) echo little;;
255 hppa*) echo big;;
113 i?86*) echo x86;; 256 i?86*) echo little;;
257 ia64*) echo little;;
258 m68*) echo big;;
259 mips*l*) echo little;;
260 mips*) echo big;;
261 powerpc*) echo big;;
262 s390*) echo big;;
263 sh*b*) echo big;;
264 sh*) echo little;;
265 sparc*) echo big;;
266 x86_64*) echo little;;
114 *) echo wtf;; 267 *) echo wtf;;
115 esac 268 esac
116} 269}
117host_to_arch_kernel() {
118 ninja_magic_to_arch kern $@
119}
120host_to_arch_portage() {
121 ninja_magic_to_arch portage $@
122}
123 270
124 271# @FUNCTION: gcc-fullversion
125# Returns the version as by `$CC -dumpversion` 272# @RETURN: compiler version (major.minor.micro: [3.4.6])
126gcc-fullversion() { 273gcc-fullversion() {
127 echo "$($(tc-getCC) -dumpversion)" 274 $(tc-getCC "$@") -dumpversion
128} 275}
129# Returns the version, but only the <major>.<minor> 276# @FUNCTION: gcc-version
277# @RETURN: compiler version (major.minor: [3.4].6)
130gcc-version() { 278gcc-version() {
131 echo "$(gcc-fullversion | cut -f1,2 -d.)" 279 gcc-fullversion "$@" | cut -f1,2 -d.
132} 280}
133# Returns the Major version 281# @FUNCTION: gcc-major-version
282# @RETURN: major compiler version (major: [3].4.6)
134gcc-major-version() { 283gcc-major-version() {
135 echo "$(gcc-version | cut -f1 -d.)" 284 gcc-version "$@" | cut -f1 -d.
136} 285}
137# Returns the Minor version 286# @FUNCTION: gcc-minor-version
287# @RETURN: minor compiler version (minor: 3.[4].6)
138gcc-minor-version() { 288gcc-minor-version() {
139 echo "$(gcc-version | cut -f2 -d.)" 289 gcc-version "$@" | cut -f2 -d.
140} 290}
141# Returns the Micro version 291# @FUNCTION: gcc-micro-version
292# @RETURN: micro compiler version (micro: 3.4.[6])
142gcc-micro-version() { 293gcc-micro-version() {
143 echo "$(gcc-fullversion | cut -f3 -d.)" 294 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
144} 295}
296
297# Returns the installation directory - internal toolchain
298# function for use by _gcc-specs-exists (for flag-o-matic).
299_gcc-install-dir() {
300 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\
301 awk '$1=="install:" {print $2}')"
302}
303# Returns true if the indicated specs file exists - internal toolchain
304# function for use by flag-o-matic.
305_gcc-specs-exists() {
306 [[ -f $(_gcc-install-dir)/$1 ]]
307}
308
309# Returns requested gcc specs directive unprocessed - for used by
310# gcc-specs-directive()
311# Note; later specs normally overwrite earlier ones; however if a later
312# spec starts with '+' then it appends.
313# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
314# as "Reading <file>", in order. Strictly speaking, if there's a
315# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
316# the same token anything from 'gcc -dumpspecs' is overridden by
317# the contents of $(gcc_install_dir)/specs so the result is the
318# same either way.
319_gcc-specs-directive_raw() {
320 local cc=$(tc-getCC)
321 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
322 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
323'BEGIN { pspec=""; spec=""; outside=1 }
324$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
325 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
326 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
327 { spec=spec $0 }
328END { print spec }'
329 return 0
330}
331
332# Return the requested gcc specs directive, with all included
333# specs expanded.
334# Note, it does not check for inclusion loops, which cause it
335# to never finish - but such loops are invalid for gcc and we're
336# assuming gcc is operational.
337gcc-specs-directive() {
338 local directive subdname subdirective
339 directive="$(_gcc-specs-directive_raw $1)"
340 while [[ ${directive} == *%\(*\)* ]]; do
341 subdname=${directive/*%\(}
342 subdname=${subdname/\)*}
343 subdirective="$(_gcc-specs-directive_raw ${subdname})"
344 directive="${directive//\%(${subdname})/${subdirective}}"
345 done
346 echo "${directive}"
347 return 0
348}
349
350# Returns true if gcc sets relro
351gcc-specs-relro() {
352 local directive
353 directive=$(gcc-specs-directive link_command)
354 return $([[ ${directive/\{!norelro:} != ${directive} ]])
355}
356# Returns true if gcc sets now
357gcc-specs-now() {
358 local directive
359 directive=$(gcc-specs-directive link_command)
360 return $([[ ${directive/\{!nonow:} != ${directive} ]])
361}
362# Returns true if gcc builds PIEs
363gcc-specs-pie() {
364 local directive
365 directive=$(gcc-specs-directive cc1)
366 return $([[ ${directive/\{!nopie:} != ${directive} ]])
367}
368# Returns true if gcc builds with the stack protector
369gcc-specs-ssp() {
370 local directive
371 directive=$(gcc-specs-directive cc1)
372 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
373}
374# Returns true if gcc upgrades fstack-protector to fstack-protector-all
375gcc-specs-ssp-to-all() {
376 local directive
377 directive=$(gcc-specs-directive cc1)
378 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
379}
380
381
382# @FUNCTION: gen_usr_ldscript
383# @USAGE: <list of libs to create linker scripts for>
384# @DESCRIPTION:
385# This function generate linker scripts in /usr/lib for dynamic
386# libs in /lib. This is to fix linking problems when you have
387# the .so in /lib, and the .a in /usr/lib. What happens is that
388# in some cases when linking dynamic, the .a in /usr/lib is used
389# instead of the .so in /lib due to gcc/libtool tweaking ld's
390# library search path. This causes many builds to fail.
391# See bug #4411 for more info.
392#
393# Note that you should in general use the unversioned name of
394# the library (libfoo.so), as ldconfig should usually update it
395# correctly to point to the latest version of the library present.
396gen_usr_ldscript() {
397 local lib libdir=$(get_libdir) output_format=""
398 # Just make sure it exists
399 dodir /usr/${libdir}
400
401 # OUTPUT_FORMAT gives hints to the linker as to what binary format
402 # is referenced ... makes multilib saner
403 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
404 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
405
406 for lib in "$@" ; do
407 if [[ ${USERLAND} == "Darwin" ]] ; then
408 ewarn "Not creating fake dynamic library for $lib on Darwin;"
409 ewarn "making a symlink instead."
410 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
411 else
412 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
413 /* GNU ld script
414 Since Gentoo has critical dynamic libraries
415 in /lib, and the static versions in /usr/lib,
416 we need to have a "fake" dynamic lib in /usr/lib,
417 otherwise we run into linking problems.
418
419 See bug http://bugs.gentoo.org/4411 for more info.
420 */
421 ${output_format}
422 GROUP ( /${libdir}/${lib} )
423 END_LDSCRIPT
424 fi
425 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
426 done
427}

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