/[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 1.30 2005/02/13 21:17:24 eradicator Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.67 2007/03/04 21:03:58 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 10inherit multilib
11INHERITED="$INHERITED $ECLASS"
12 11
13DESCRIPTION="Based on the ${ECLASS} eclass" 12DESCRIPTION="Based on the ${ECLASS} eclass"
14 13
15tc-getPROG() { 14tc-getPROG() {
16 local var=$1 15 local var=$1
19 if [[ -n ${!var} ]] ; then 18 if [[ -n ${!var} ]] ; then
20 echo "${!var}" 19 echo "${!var}"
21 return 0 20 return 0
22 fi 21 fi
23 22
24 if [[ -n ${CHOST} ]] ; then 23 local search=
25 local search=$(type -p "${CHOST}-${prog}") 24 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
25 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
26 [[ -n ${search} ]] && prog=${search##*/} 26 [[ -n ${search} ]] && prog=${search##*/}
27 fi
28 27
29 export ${var}=${prog} 28 export ${var}=${prog}
30 echo "${!var}" 29 echo "${!var}"
31} 30}
32 31
33# Returns the name of the archiver 32# Returns the name of the archiver
34tc-getAR() { tc-getPROG AR ar; } 33tc-getAR() { tc-getPROG AR ar "$@"; }
35# Returns the name of the assembler 34# Returns the name of the assembler
36tc-getAS() { tc-getPROG AS as; } 35tc-getAS() { tc-getPROG AS as "$@"; }
37# Returns the name of the C compiler 36# Returns the name of the C compiler
38tc-getCC() { tc-getPROG CC gcc; } 37tc-getCC() { tc-getPROG CC gcc "$@"; }
38# Returns the name of the C preprocessor
39tc-getCPP() { tc-getPROG CPP cpp "$@"; }
39# Returns the name of the C++ compiler 40# Returns the name of the C++ compiler
40tc-getCXX() { tc-getPROG CXX g++; } 41tc-getCXX() { tc-getPROG CXX g++ "$@"; }
41# Returns the name of the linker 42# Returns the name of the linker
42tc-getLD() { tc-getPROG LD ld; } 43tc-getLD() { tc-getPROG LD ld "$@"; }
44# Returns the name of the strip prog
45tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
43# Returns the name of the symbol/object thingy 46# Returns the name of the symbol/object thingy
44tc-getNM() { tc-getPROG NM nm; } 47tc-getNM() { tc-getPROG NM nm "$@"; }
45# Returns the name of the archiver indexer 48# Returns the name of the archiver indexer
46tc-getRANLIB() { tc-getPROG RANLIB ranlib; } 49tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
50# Returns the name of the fortran 77 compiler
51tc-getF77() { tc-getPROG F77 f77 "$@"; }
52# Returns the name of the fortran 90 compiler
53tc-getF90() { tc-getPROG F90 gfortran "$@"; }
47# Returns the name of the fortran compiler 54# Returns the name of the fortran compiler
48tc-getF77() { tc-getPROG F77 f77; } 55tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
49# Returns the name of the java compiler 56# Returns the name of the java compiler
50tc-getGCJ() { tc-getPROG GCJ gcj; } 57tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
51 58
52# Returns the name of the C compiler for build 59# Returns the name of the C compiler for build
53tc-getBUILD_CC() { 60tc-getBUILD_CC() {
61 local v
62 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
54 if [[ -n ${CC_FOR_BUILD} ]] ; then 63 if [[ -n ${!v} ]] ; then
55 export BUILD_CC=${CC_FOR_BUILD} 64 export BUILD_CC=${!v}
56 echo "${CC_FOR_BUILD}" 65 echo "${!v}"
57 return 0 66 return 0
58 fi 67 fi
68 done
59 69
60 local search= 70 local search=
61 if [[ -n ${CBUILD} ]] ; then 71 if [[ -n ${CBUILD} ]] ; then
62 search=$(type -p ${CBUILD}-gcc) 72 search=$(type -p ${CBUILD}-gcc)
63 search=${search##*/} 73 search=${search##*/}
64 else
65 search=gcc
66 fi 74 fi
75 search=${search:-gcc}
67 76
68 export BUILD_CC=${search} 77 export BUILD_CC=${search}
69 echo "${search}" 78 echo "${search}"
70} 79}
71 80
72# Quick way to export a bunch of vars at once 81# Quick way to export a bunch of vars at once
73tc-export() { 82tc-export() {
74 local var 83 local var
75 for var in "$@" ; do 84 for var in "$@" ; do
76 eval tc-get${var} 85 eval tc-get${var} > /dev/null
77 done 86 done
78} 87}
79 88
80# A simple way to see if we're using a cross-compiler ... 89# A simple way to see if we're using a cross-compiler ...
81tc-is-cross-compiler() { 90tc-is-cross-compiler() {
82 if [[ -n ${CBUILD} ]] ; then
83 return $([[ ${CBUILD} != ${CHOST} ]]) 91 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
84 fi
85 return 1
86} 92}
87 93
94# See if this toolchain is a softfloat based one.
95# The possible return values:
96# - only: the target is always softfloat (never had fpu)
97# - yes: the target should support softfloat
98# - no: the target should support hardfloat
99# This allows us to react differently where packages accept
100# softfloat flags in the case where support is optional, but
101# rejects softfloat flags where the target always lacks an fpu.
102tc-is-softfloat() {
103 case ${CTARGET} in
104 bfin*|h8300*)
105 echo "only" ;;
106 *)
107 [[ ${CTARGET//_/-} == *-softfloat-* ]] \
108 && echo "yes" \
109 || echo "no"
110 ;;
111 esac
112}
88 113
89# Parse information from CBUILD/CHOST/CTARGET rather than 114# Parse information from CBUILD/CHOST/CTARGET rather than
90# use external variables from the profile. 115# use external variables from the profile.
91tc-ninja_magic_to_arch() { 116tc-ninja_magic_to_arch() {
92ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 117ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
93 118
94 local type=$1 119 local type=$1
95 local host=$2 120 local host=$2
96 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 121 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
97 122
98 case ${host} in 123 case ${host} in
99 alpha*) echo alpha;; 124 alpha*) echo alpha;;
100 x86_64*) ninj x86_64 amd64;;
101 arm*) echo arm;; 125 arm*) echo arm;;
126 bfin*) ninj blackfin bfin;;
127 cris*) echo cris;;
102 hppa*) ninj parisc hppa;; 128 hppa*) ninj parisc hppa;;
129 i?86*) ninj i386 x86;;
103 ia64*) echo ia64;; 130 ia64*) echo ia64;;
104 m68*) echo m68k;; 131 m68*) echo m68k;;
105 mips*) echo mips;; 132 mips*) echo mips;;
106 powerpc64*) echo ppc64;; 133 nios2*) echo nios2;;
107 powerpc*) echo ppc;; 134 nios*) echo nios;;
135 powerpc*)
136 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
137 # have been unified into simply 'powerpc', but until 2.6.16,
138 # ppc32 is still using ARCH="ppc" as default
139 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
140 echo powerpc
141 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
142 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
143 echo powerpc
144 else
145 echo ppc
146 fi
147 elif [[ ${host} == powerpc64* ]] ; then
148 echo ppc64
149 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
150 ninj ppc64 ppc
151 else
152 echo ppc
153 fi
154 ;;
155 s390*) echo s390;;
156 sh64*) ninj sh64 sh;;
157 sh*) echo sh;;
108 sparc64*) ninj sparc64 sparc;; 158 sparc64*) ninj sparc64 sparc;;
109 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 159 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
110 && ninj sparc64 sparc \ 160 && ninj sparc64 sparc \
111 || echo sparc 161 || echo sparc
112 ;; 162 ;;
113 s390*) echo s390;; 163 vax*) echo vax;;
114 sh64*) ninj sh64 sh;; 164 x86_64*) ninj x86_64 amd64;;
115 sh*) echo sh;;
116 i?86*) ninj i386 x86;;
117 *) echo ${ARCH};; 165 *) echo ${ARCH};;
118 esac 166 esac
119} 167}
120tc-arch-kernel() { 168tc-arch-kernel() {
121 tc-ninja_magic_to_arch kern $@ 169 tc-ninja_magic_to_arch kern $@
122} 170}
123tc-arch() { 171tc-arch() {
124 tc-ninja_magic_to_arch portage $@ 172 tc-ninja_magic_to_arch portage $@
125} 173}
126tc-endian() {
127 local host=$1
128 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
129
130 case ${host} in
131 alpha*) echo big;;
132 x86_64*) echo little;;
133 arm*eb-*) echo big;;
134 arm*) echo little;;
135 hppa*) echo big;;
136 ia64*) echo little;;
137 m68*) echo big;;
138 mips*el-*) echo little;;
139 mips*) echo big;;
140 powerpc*) echo big;;
141 sparc*) echo big;;
142 s390*) echo big;;
143 sh*el-) echo little;;
144 sh*) echo big;;
145 i?86*) echo little;;
146 *) echo wtf;;
147 esac
148}
149 174
150# Returns the version as by `$CC -dumpversion` 175# Returns the version as by `$CC -dumpversion`
151gcc-fullversion() { 176gcc-fullversion() {
152 echo "$($(tc-getCC) -dumpversion)" 177 $(tc-getCC "$@") -dumpversion
153} 178}
154# Returns the version, but only the <major>.<minor> 179# Returns the version, but only the <major>.<minor>
155gcc-version() { 180gcc-version() {
156 echo "$(gcc-fullversion | cut -f1,2 -d.)" 181 gcc-fullversion "$@" | cut -f1,2 -d.
157} 182}
158# Returns the Major version 183# Returns the Major version
159gcc-major-version() { 184gcc-major-version() {
160 echo "$(gcc-version | cut -f1 -d.)" 185 gcc-version "$@" | cut -f1 -d.
161} 186}
162# Returns the Minor version 187# Returns the Minor version
163gcc-minor-version() { 188gcc-minor-version() {
164 echo "$(gcc-version | cut -f2 -d.)" 189 gcc-version "$@" | cut -f2 -d.
165} 190}
166# Returns the Micro version 191# Returns the Micro version
167gcc-micro-version() { 192gcc-micro-version() {
168 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 193 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
169} 194}
195
196# Returns requested gcc specs directive
197# Note; later specs normally overwrite earlier ones; however if a later
198# spec starts with '+' then it appends.
199# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
200# as "Reading <file>", in order.
201gcc-specs-directive() {
202 local cc=$(tc-getCC)
203 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
204 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
205'BEGIN { pspec=""; spec=""; outside=1 }
206$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
207 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
208 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
209 { spec=spec $0 }
210END { print spec }'
211 return 0
212}
213
214# Returns true if gcc sets relro
215gcc-specs-relro() {
216 local directive
217 directive=$(gcc-specs-directive link_command)
218 return $([[ ${directive/\{!norelro:} != ${directive} ]])
219}
220# Returns true if gcc sets now
221gcc-specs-now() {
222 local directive
223 directive=$(gcc-specs-directive link_command)
224 return $([[ ${directive/\{!nonow:} != ${directive} ]])
225}
226# Returns true if gcc builds PIEs
227gcc-specs-pie() {
228 local directive
229 directive=$(gcc-specs-directive cc1)
230 return $([[ ${directive/\{!nopie:} != ${directive} ]])
231}
232# Returns true if gcc builds with the stack protector
233gcc-specs-ssp() {
234 local directive
235 directive=$(gcc-specs-directive cc1)
236 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
237}
238# Returns true if gcc upgrades fstack-protector to fstack-protector-all
239gcc-specs-ssp-to-all() {
240 local directive
241 directive=$(gcc-specs-directive cc1)
242 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
243}
244
245
246# This function generate linker scripts in /usr/lib for dynamic
247# libs in /lib. This is to fix linking problems when you have
248# the .so in /lib, and the .a in /usr/lib. What happens is that
249# in some cases when linking dynamic, the .a in /usr/lib is used
250# instead of the .so in /lib due to gcc/libtool tweaking ld's
251# library search path. This cause many builds to fail.
252# See bug #4411 for more info.
253#
254# To use, simply call:
255#
256# gen_usr_ldscript libfoo.so
257#
258# Note that you should in general use the unversioned name of
259# the library, as ldconfig should usually update it correctly
260# to point to the latest version of the library present.
261_tc_gen_usr_ldscript() {
262 local lib libdir=$(get_libdir) output_format=""
263 # Just make sure it exists
264 dodir /usr/${libdir}
265
266 # OUTPUT_FORMAT gives hints to the linker as to what binary format
267 # is referenced ... makes multilib saner
268 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
269 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
270
271 for lib in "$@" ; do
272 if [[ ${USERLAND} == "Darwin" ]] ; then
273 ewarn "Not creating fake dynamic library for $lib on Darwin;"
274 ewarn "making a symlink instead."
275 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
276 else
277 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
278 /* GNU ld script
279 Since Gentoo has critical dynamic libraries
280 in /lib, and the static versions in /usr/lib,
281 we need to have a "fake" dynamic lib in /usr/lib,
282 otherwise we run into linking problems.
283
284 See bug http://bugs.gentoo.org/4411 for more info.
285 */
286 ${output_format}
287 GROUP ( /${libdir}/${lib} )
288 END_LDSCRIPT
289 fi
290 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
291 done
292}
293gen_usr_ldscript() { _tc_gen_usr_ldscript "$@" ; }

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