/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.3 Revision 1.64
1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2006 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 1.3 2004/10/13 23:44:35 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.64 2007/01/07 11:39:08 vapier Exp $
4# 4#
5# Author: Toolchain Ninjas <ninjas@gentoo.org> 5# Author: 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
10inherit eutils 10inherit multilib
11
12ECLASS=toolchain-funcs
13INHERITED="$INHERITED $ECLASS"
14 11
15DESCRIPTION="Based on the ${ECLASS} eclass" 12DESCRIPTION="Based on the ${ECLASS} eclass"
16 13
17tc-getPROG() { 14tc-getPROG() {
18 local var="$1" 15 local var=$1
19 local prog="$2" 16 local prog=$2
20 local search=""
21 17
22 if [ -n "${!var}" ] ; then 18 if [[ -n ${!var} ]] ; then
23 echo "${!var}" 19 echo "${!var}"
24 return 0 20 return 0
25 fi 21 fi
26 22
27 # how should we handle the host/target/build ? 23 local search=
24 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
25 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
26 [[ -n ${search} ]] && prog=${search##*/}
27
28 export ${var}=${prog}
29 echo "${!var}"
30}
31
32# Returns the name of the archiver
33tc-getAR() { tc-getPROG AR ar "$@"; }
34# Returns the name of the assembler
35tc-getAS() { tc-getPROG AS as "$@"; }
36# Returns the name of the C compiler
37tc-getCC() { tc-getPROG CC gcc "$@"; }
38# Returns the name of the C preprocessor
39tc-getCPP() { tc-getPROG CPP cpp "$@"; }
40# Returns the name of the C++ compiler
41tc-getCXX() { tc-getPROG CXX g++ "$@"; }
42# Returns the name of the linker
43tc-getLD() { tc-getPROG LD ld "$@"; }
44# Returns the name of the strip prog
45tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
46# Returns the name of the symbol/object thingy
47tc-getNM() { tc-getPROG NM nm "$@"; }
48# Returns the name of the archiver indexer
49tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
50# Returns the name of the fortran 77 compiler
51tc-getF77() { tc-getPROG F77 f77 "$@"; }
52# Returns the name of the fortran 90 compiler
53tc-getF90() { tc-getPROG F90 gfortran "$@"; }
54# Returns the name of the fortran compiler
55tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
56# Returns the name of the java compiler
57tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
58
59# Returns the name of the C compiler for build
60tc-getBUILD_CC() {
61 local v
62 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
28 if [ -n "${CHOST}" ] ; then 63 if [[ -n ${!v} ]] ; then
29 search="$(type -p "${CHOST}-${prog}")" 64 export BUILD_CC=${!v}
30 else 65 echo "${!v}"
31 if [ -n "${CTARGET}" ] ; then 66 return 0
32 search="$(type -p "${CTARGET}-${prog}")"
33 fi 67 fi
68 done
69
70 local search=
71 if [[ -n ${CBUILD} ]] ; then
72 search=$(type -p ${CBUILD}-gcc)
73 search=${search##*/}
34 fi 74 fi
75 search=${search:-gcc}
35 76
36 if [ -z "${search}" ] ; then 77 export BUILD_CC=${search}
37 prog="${search##*/}"
38 fi
39 export ${var}="${prog}"
40 echo "${!var}" 78 echo "${search}"
41} 79}
42 80
43# Returns the name of the archiver 81# Quick way to export a bunch of vars at once
44tc-getAR() { tc-getPROG AR ar; } 82tc-export() {
45# Returns the name of the assembler 83 local var
46tc-getAS() { tc-getPROG AS as; } 84 for var in "$@" ; do
47# Returns the name of the C compiler 85 eval tc-get${var} > /dev/null
48tc-getCC() { tc-getPROG CC gcc; } 86 done
49# Returns the name of the C++ compiler 87}
50tc-getCXX() { tc-getPROG CXX g++; }
51# Returns the name of the linker
52tc-getLD() { tc-getPROG LD ld; }
53# Returns the name of the symbol/object thingy
54tc-getNM() { tc-getPROG NM nm; }
55# Returns the name of the archiver indexer
56tc-getRANLIB() { tc-getPROG RANLIB ranlib; }
57 88
89# A simple way to see if we're using a cross-compiler ...
90tc-is-cross-compiler() {
91 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
92}
58 93
94
95# Parse information from CBUILD/CHOST/CTARGET rather than
96# use external variables from the profile.
97tc-ninja_magic_to_arch() {
98ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
99
100 local type=$1
101 local host=$2
102 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
103
104 case ${host} in
105 alpha*) echo alpha;;
106 arm*) echo arm;;
107 bfin*) ninj blackfin bfin;;
108 cris*) echo cris;;
109 hppa*) ninj parisc hppa;;
110 i?86*) ninj i386 x86;;
111 ia64*) echo ia64;;
112 m68*) echo m68k;;
113 mips*) echo mips;;
114 nios2*) echo nios2;;
115 nios*) echo nios;;
116 powerpc*)
117 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
118 # have been unified into simply 'powerpc', but until 2.6.16,
119 # ppc32 is still using ARCH="ppc" as default
120 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
121 echo powerpc
122 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
123 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
124 echo powerpc
125 else
126 echo ppc
127 fi
128 elif [[ ${host} == powerpc64* ]] ; then
129 echo ppc64
130 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
131 ninj ppc64 ppc
132 else
133 echo ppc
134 fi
135 ;;
136 s390*) echo s390;;
137 sh64*) ninj sh64 sh;;
138 sh*) echo sh;;
139 sparc64*) ninj sparc64 sparc;;
140 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
141 && ninj sparc64 sparc \
142 || echo sparc
143 ;;
144 vax*) echo vax;;
145 x86_64*) ninj x86_64 amd64;;
146 *) echo ${ARCH};;
147 esac
148}
149tc-arch-kernel() {
150 tc-ninja_magic_to_arch kern $@
151}
152tc-arch() {
153 tc-ninja_magic_to_arch portage $@
154}
59 155
60# Returns the version as by `$CC -dumpversion` 156# Returns the version as by `$CC -dumpversion`
61gcc-fullversion() { 157gcc-fullversion() {
62 echo "$($(tc-getCC) -dumpversion)" 158 $(tc-getCC "$@") -dumpversion
63} 159}
64# Returns the version, but only the <major>.<minor> 160# Returns the version, but only the <major>.<minor>
65gcc-version() { 161gcc-version() {
66 echo "$(gcc-fullversion | cut -f1,2 -d.)" 162 gcc-fullversion "$@" | cut -f1,2 -d.
67} 163}
68# Returns the Major version 164# Returns the Major version
69gcc-major-version() { 165gcc-major-version() {
70 echo "$(gcc-version | cut -f1 -d.)" 166 gcc-version "$@" | cut -f1 -d.
71} 167}
72# Returns the Minor version 168# Returns the Minor version
73gcc-minor-version() { 169gcc-minor-version() {
74 echo "$(gcc-version | cut -f2 -d.)" 170 gcc-version "$@" | cut -f2 -d.
75} 171}
76# Returns the Micro version 172# Returns the Micro version
77gcc-micro-version() { 173gcc-micro-version() {
78 echo "$(gcc-fullversion | cut -f3 -d.)" 174 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
79} 175}
176
177# Returns requested gcc specs directive
178# Note; later specs normally overwrite earlier ones; however if a later
179# spec starts with '+' then it appends.
180# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
181# as "Reading <file>", in order.
182gcc-specs-directive() {
183 local cc=$(tc-getCC)
184 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
185 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
186'BEGIN { pspec=""; spec=""; outside=1 }
187$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
188 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
189 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
190 { spec=spec $0 }
191END { print spec }'
192 return 0
193}
194
195# Returns true if gcc sets relro
196gcc-specs-relro() {
197 local directive
198 directive=$(gcc-specs-directive link_command)
199 return $([[ ${directive/\{!norelro:} != ${directive} ]])
200}
201# Returns true if gcc sets now
202gcc-specs-now() {
203 local directive
204 directive=$(gcc-specs-directive link_command)
205 return $([[ ${directive/\{!nonow:} != ${directive} ]])
206}
207# Returns true if gcc builds PIEs
208gcc-specs-pie() {
209 local directive
210 directive=$(gcc-specs-directive cc1)
211 return $([[ ${directive/\{!nopie:} != ${directive} ]])
212}
213# Returns true if gcc builds with the stack protector
214gcc-specs-ssp() {
215 local directive
216 directive=$(gcc-specs-directive cc1)
217 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
218}
219# Returns true if gcc upgrades fstack-protector to fstack-protector-all
220gcc-specs-ssp-to-all() {
221 local directive
222 directive=$(gcc-specs-directive cc1)
223 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
224}
225
226
227# This function generate linker scripts in /usr/lib for dynamic
228# libs in /lib. This is to fix linking problems when you have
229# the .so in /lib, and the .a in /usr/lib. What happens is that
230# in some cases when linking dynamic, the .a in /usr/lib is used
231# instead of the .so in /lib due to gcc/libtool tweaking ld's
232# library search path. This cause many builds to fail.
233# See bug #4411 for more info.
234#
235# To use, simply call:
236#
237# gen_usr_ldscript libfoo.so
238#
239# Note that you should in general use the unversioned name of
240# the library, as ldconfig should usually update it correctly
241# to point to the latest version of the library present.
242_tc_gen_usr_ldscript() {
243 local lib libdir=$(get_libdir) output_format=""
244 # Just make sure it exists
245 dodir /usr/${libdir}
246
247 # OUTPUT_FORMAT gives hints to the linker as to what binary format
248 # is referenced ... makes multilib saner
249 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
250 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
251
252 for lib in "$@" ; do
253 if [[ ${USERLAND} == "Darwin" ]] ; then
254 ewarn "Not creating fake dynamic library for $lib on Darwin;"
255 ewarn "making a symlink instead."
256 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
257 else
258 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
259 /* GNU ld script
260 Since Gentoo has critical dynamic libraries
261 in /lib, and the static versions in /usr/lib,
262 we need to have a "fake" dynamic lib in /usr/lib,
263 otherwise we run into linking problems.
264
265 See bug http://bugs.gentoo.org/4411 for more info.
266 */
267 ${output_format}
268 GROUP ( /${libdir}/${lib} )
269 END_LDSCRIPT
270 fi
271 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
272 done
273}
274gen_usr_ldscript() { _tc_gen_usr_ldscript "$@" ; }

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