/[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 1.21 2005/01/11 04:23:42 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.73 2007/07/22 19:59:48 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
10ECLASS=toolchain-funcs 10___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11INHERITED="$INHERITED $ECLASS" 11[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
12 12
13DESCRIPTION="Based on the ${ECLASS} eclass" 13DESCRIPTION="Based on the ${ECLASS} eclass"
14 14
15tc-getPROG() { 15tc-getPROG() {
16 local var=$1 16 local var=$1
19 if [[ -n ${!var} ]] ; then 19 if [[ -n ${!var} ]] ; then
20 echo "${!var}" 20 echo "${!var}"
21 return 0 21 return 0
22 fi 22 fi
23 23
24 if [[ -n ${CHOST} ]] ; then 24 local search=
25 local search=$(type -p "${CHOST}-${prog}") 25 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
26 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
26 [[ -n ${search} ]] && prog=${search##*/} 27 [[ -n ${search} ]] && prog=${search##*/}
27 fi
28 28
29 export ${var}=${prog} 29 export ${var}=${prog}
30 echo "${!var}" 30 echo "${!var}"
31} 31}
32 32
33# Returns the name of the archiver 33# Returns the name of the archiver
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 local v
63 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
54 if [[ -n ${CC_FOR_BUILD} ]] ; then 64 if [[ -n ${!v} ]] ; then
55 export BUILD_CC=${CC_FOR_BUILD} 65 export BUILD_CC=${!v}
56 echo "${CC_FOR_BUILD}" 66 echo "${!v}"
57 return 0 67 return 0
58 fi 68 fi
69 done
59 70
60 local search= 71 local search=
61 if [[ -n ${CBUILD} ]] ; then 72 if [[ -n ${CBUILD} ]] ; then
62 search=$(type -p ${CBUILD}-gcc) 73 search=$(type -p ${CBUILD}-gcc)
63 search=${search##*/} 74 search=${search##*/}
64 else
65 search=gcc
66 fi 75 fi
76 search=${search:-gcc}
67 77
68 export BUILD_CC=${search} 78 export BUILD_CC=${search}
69 echo "${search}" 79 echo "${search}"
70} 80}
71 81
72# Quick way to export a bunch of vars at once 82# Quick way to export a bunch of vars at once
73tc-export() { 83tc-export() {
74 local var 84 local var
75 for var in "$@" ; do 85 for var in "$@" ; do
76 eval tc-get${var} 86 eval tc-get${var} > /dev/null
77 done 87 done
78} 88}
79 89
80# 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 ...
81tc-is-cross-compiler() { 91tc-is-cross-compiler() {
82 if [[ -n ${CBUILD} ]] ; then
83 return $([[ ${CBUILD} != ${CHOST} ]]) 92 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
84 fi
85 return 1
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 ; }
93 119
94 local type=$1 120 local type=$1
95 local host=$2 121 local host=$2
96 [[ -z ${host} ]] && arg=${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 avr*) ninj avr32 avr;;
128 bfin*) ninj blackfin bfin;;
129 cris*) echo cris;;
102 hppa*) ninj parisc hppa;; 130 hppa*) ninj parisc hppa;;
131 i?86*) ninj i386 x86;;
103 ia64*) echo ia64;; 132 ia64*) echo ia64;;
133 m68*) echo m68k;;
104 mips*) echo mips;; 134 mips*) echo mips;;
105 powerpc64*) echo ppc64;; 135 nios2*) echo nios2;;
106 powerpc*) echo ppc;; 136 nios*) echo nios;;
107 sparc64*) ninj sparc64 sparc;; 137 powerpc*)
108 sparc*) echo sparc;; 138 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
139 # have been unified into simply 'powerpc', but until 2.6.16,
140 # ppc32 is still using ARCH="ppc" as default
141 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
142 echo powerpc
143 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
144 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
145 echo powerpc
146 else
147 echo ppc
148 fi
149 elif [[ ${host} == powerpc64* ]] ; then
150 echo ppc64
151 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
152 ninj ppc64 ppc
153 else
154 echo ppc
155 fi
156 ;;
109 s390*) echo s390;; 157 s390*) echo s390;;
110 sh64*) ninj sh64 sh;; 158 sh64*) ninj sh64 sh;;
111 sh*) echo sh;; 159 sh*) echo sh;;
160 sparc64*) ninj sparc64 sparc;;
161 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
162 && ninj sparc64 sparc \
163 || echo sparc
164 ;;
165 vax*) echo vax;;
166 x86_64*) ninj x86_64 amd64;;
167
168 # since our usage of tc-arch is largely concerned with
169 # normalizing inputs for testing ${CTARGET}, let's filter
170 # other cross targets (mingw and such) into the unknown.
171 *) echo unknown;;
172 esac
173}
174tc-arch-kernel() {
175 tc-ninja_magic_to_arch kern $@
176}
177tc-arch() {
178 tc-ninja_magic_to_arch portage $@
179}
180tc-endian() {
181 local host=$1
182 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
183 host=${host%%-*}
184
185 case ${host} in
186 alpha*) echo big;;
187 arm*b*) echo big;;
188 arm*) echo little;;
189 cris*) echo little;;
190 hppa*) echo big;;
112 i?86*) echo x86;; 191 i?86*) echo little;;
192 ia64*) echo little;;
193 m68*) echo big;;
194 mips*l*) echo little;;
195 mips*) echo big;;
196 powerpc*) echo big;;
197 s390*) echo big;;
198 sh*b*) echo big;;
199 sh*) echo little;;
200 sparc*) echo big;;
201 x86_64*) echo little;;
113 *) echo wtf;; 202 *) echo wtf;;
114 esac 203 esac
115} 204}
116tc-arch-kernel() {
117 tc-ninja_magic_to_arch kern $@
118}
119tc-arch() {
120 tc-ninja_magic_to_arch portage $@
121}
122tc-endian() {
123 local host=$1
124 [[ -z ${host} ]] && host=${CHOST}
125
126 case ${host} in
127 alpha*) echo big;;
128 x86_64*) echo little;;
129 arm*eb-*) echo big;;
130 arm*) echo little;;
131 hppa*) echo big;;
132 ia64*) echo little;;
133 m68k*) echo big;;
134 mips*el-*) echo little;;
135 mips*) echo big;;
136 powerpc*) echo big;;
137 sparc*) echo big;;
138 s390*) echo big;;
139 sh*el-) echo little;;
140 sh*) echo big;;
141 i?86*) echo little;;
142 *) echo wtf;;
143 esac
144}
145 205
146# Returns the version as by `$CC -dumpversion` 206# Returns the version as by `$CC -dumpversion`
147gcc-fullversion() { 207gcc-fullversion() {
148 echo "$($(tc-getCC) -dumpversion)" 208 $(tc-getCC "$@") -dumpversion
149} 209}
150# Returns the version, but only the <major>.<minor> 210# Returns the version, but only the <major>.<minor>
151gcc-version() { 211gcc-version() {
152 echo "$(gcc-fullversion | cut -f1,2 -d.)" 212 gcc-fullversion "$@" | cut -f1,2 -d.
153} 213}
154# Returns the Major version 214# Returns the Major version
155gcc-major-version() { 215gcc-major-version() {
156 echo "$(gcc-version | cut -f1 -d.)" 216 gcc-version "$@" | cut -f1 -d.
157} 217}
158# Returns the Minor version 218# Returns the Minor version
159gcc-minor-version() { 219gcc-minor-version() {
160 echo "$(gcc-version | cut -f2 -d.)" 220 gcc-version "$@" | cut -f2 -d.
161} 221}
162# Returns the Micro version 222# Returns the Micro version
163gcc-micro-version() { 223gcc-micro-version() {
164 echo "$(gcc-fullversion | cut -f3 -d.)" 224 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
165} 225}
226# Returns the installation directory - internal toolchain
227# function for use by _gcc-specs-exists (for flag-o-matic).
228_gcc-install-dir() {
229 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\
230 awk '$1=="install:" {print $2}')"
231}
232# Returns true if the indicated specs file exists - internal toolchain
233# function for use by flag-o-matic.
234_gcc-specs-exists() {
235 [[ -f $(_gcc-install-dir)/$1 ]]
236}
237
238# Returns requested gcc specs directive unprocessed - for used by
239# gcc-specs-directive()
240# Note; later specs normally overwrite earlier ones; however if a later
241# spec starts with '+' then it appends.
242# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
243# as "Reading <file>", in order. Strictly speaking, if there's a
244# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
245# the same token anything from 'gcc -dumpspecs' is overridden by
246# the contents of $(gcc_install_dir)/specs so the result is the
247# same either way.
248_gcc-specs-directive_raw() {
249 local cc=$(tc-getCC)
250 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
251 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
252'BEGIN { pspec=""; spec=""; outside=1 }
253$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
254 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
255 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
256 { spec=spec $0 }
257END { print spec }'
258 return 0
259}
260
261# Return the requested gcc specs directive, with all included
262# specs expanded.
263# Note, it does not check for inclusion loops, which cause it
264# to never finish - but such loops are invalid for gcc and we're
265# assuming gcc is operational.
266gcc-specs-directive() {
267 local directive subdname subdirective
268 directive="$(_gcc-specs-directive_raw $1)"
269 while [[ ${directive} == *%\(*\)* ]]; do
270 subdname=${directive/*%\(}
271 subdname=${subdname/\)*}
272 subdirective="$(_gcc-specs-directive_raw ${subdname})"
273 directive="${directive//\%(${subdname})/${subdirective}}"
274 done
275 echo "${directive}"
276 return 0
277}
278
279# Returns true if gcc sets relro
280gcc-specs-relro() {
281 local directive
282 directive=$(gcc-specs-directive link_command)
283 return $([[ ${directive/\{!norelro:} != ${directive} ]])
284}
285# Returns true if gcc sets now
286gcc-specs-now() {
287 local directive
288 directive=$(gcc-specs-directive link_command)
289 return $([[ ${directive/\{!nonow:} != ${directive} ]])
290}
291# Returns true if gcc builds PIEs
292gcc-specs-pie() {
293 local directive
294 directive=$(gcc-specs-directive cc1)
295 return $([[ ${directive/\{!nopie:} != ${directive} ]])
296}
297# Returns true if gcc builds with the stack protector
298gcc-specs-ssp() {
299 local directive
300 directive=$(gcc-specs-directive cc1)
301 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
302}
303# Returns true if gcc upgrades fstack-protector to fstack-protector-all
304gcc-specs-ssp-to-all() {
305 local directive
306 directive=$(gcc-specs-directive cc1)
307 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
308}
309
310
311# This function generate linker scripts in /usr/lib for dynamic
312# libs in /lib. This is to fix linking problems when you have
313# the .so in /lib, and the .a in /usr/lib. What happens is that
314# in some cases when linking dynamic, the .a in /usr/lib is used
315# instead of the .so in /lib due to gcc/libtool tweaking ld's
316# library search path. This cause many builds to fail.
317# See bug #4411 for more info.
318#
319# To use, simply call:
320#
321# gen_usr_ldscript libfoo.so
322#
323# Note that you should in general use the unversioned name of
324# the library, as ldconfig should usually update it correctly
325# to point to the latest version of the library present.
326gen_usr_ldscript() {
327 local lib libdir=$(get_libdir) output_format=""
328 # Just make sure it exists
329 dodir /usr/${libdir}
330
331 # OUTPUT_FORMAT gives hints to the linker as to what binary format
332 # is referenced ... makes multilib saner
333 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
334 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
335
336 for lib in "$@" ; do
337 if [[ ${USERLAND} == "Darwin" ]] ; then
338 ewarn "Not creating fake dynamic library for $lib on Darwin;"
339 ewarn "making a symlink instead."
340 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
341 else
342 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
343 /* GNU ld script
344 Since Gentoo has critical dynamic libraries
345 in /lib, and the static versions in /usr/lib,
346 we need to have a "fake" dynamic lib in /usr/lib,
347 otherwise we run into linking problems.
348
349 See bug http://bugs.gentoo.org/4411 for more info.
350 */
351 ${output_format}
352 GROUP ( /${libdir}/${lib} )
353 END_LDSCRIPT
354 fi
355 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
356 done
357}

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