/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.9 Revision 1.62
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 1.9 2004/11/17 22:13:07 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.62 2006/09/24 12:23:22 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 "${!var}"
24 return 0 20 return 0
25 fi 21 fi
26 22
27 if [ -n "${CTARGET}" ] ; then 23 local search=
28 search="$(type -p "${CTARGET}-${prog}")" 24 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
29 elif [ -n "${CHOST}" ] ; then 25 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
30 search="$(type -p "${CHOST}-${prog}")" 26 [[ -n ${search} ]] && prog=${search##*/}
31 fi
32 27
33 if [ -n "${search}" ] ; then
34 prog="${search##*/}"
35 fi
36 export ${var}="${prog}" 28 export ${var}=${prog}
37 echo "${!var}" 29 echo "${!var}"
38} 30}
39 31
40# Returns the name of the archiver 32# Returns the name of the archiver
41tc-getAR() { tc-getPROG AR ar; } 33tc-getAR() { tc-getPROG AR ar "$@"; }
42# Returns the name of the assembler 34# Returns the name of the assembler
43tc-getAS() { tc-getPROG AS as; } 35tc-getAS() { tc-getPROG AS as "$@"; }
44# Returns the name of the C compiler 36# Returns the name of the C compiler
45tc-getCC() { tc-getPROG CC gcc; } 37tc-getCC() { tc-getPROG CC gcc "$@"; }
38# Returns the name of the C preprocessor
39tc-getCPP() { tc-getPROG CPP cpp "$@"; }
46# Returns the name of the C++ compiler 40# Returns the name of the C++ compiler
47tc-getCXX() { tc-getPROG CXX g++; } 41tc-getCXX() { tc-getPROG CXX g++ "$@"; }
48# Returns the name of the linker 42# Returns the name of the linker
49tc-getLD() { tc-getPROG LD ld; } 43tc-getLD() { tc-getPROG LD ld "$@"; }
44# Returns the name of the strip prog
45tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
50# Returns the name of the symbol/object thingy 46# Returns the name of the symbol/object thingy
51tc-getNM() { tc-getPROG NM nm; } 47tc-getNM() { tc-getPROG NM nm "$@"; }
52# Returns the name of the archiver indexer 48# Returns the name of the archiver indexer
53tc-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 "$@"; }
54# Returns the name of the fortran compiler 54# Returns the name of the fortran compiler
55tc-getF77() { tc-getPROG F77 f77; } 55tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
56# Returns the name of the java compiler 56# Returns the name of the java compiler
57tc-getGCJ() { tc-getPROG GCJ gcj; } 57tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
58 58
59# Returns the name of the C compiler for build 59# Returns the name of the C compiler for build
60tc-getBUILD_CC() { 60tc-getBUILD_CC() {
61 if [ -n "${CC_FOR_BUILD}" ] ; then 61 local v
62 echo "${CC_FOR_BUILD}" 62 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
63 if [[ -n ${!v} ]] ; then
64 export BUILD_CC=${!v}
65 echo "${!v}"
63 return 0 66 return 0
67 fi
68 done
69
70 local search=
71 if [[ -n ${CBUILD} ]] ; then
72 search=$(type -p ${CBUILD}-gcc)
73 search=${search##*/}
64 fi 74 fi
75 search=${search:-gcc}
65 76
66 local search= 77 export BUILD_CC=${search}
67 if [ -n "${CTARGET}" ] ; then
68 search="$(type -p "${CTARGET}-gcc")"
69 elif [ -n "${CHOST}" ] ; then
70 search="$(type -p "${CHOST}-gcc")"
71 fi
72
73 if [ -n "${search}" ] ; then
74 echo "${search##*/}" 78 echo "${search}"
75 else
76 echo "gcc"
77 fi
78} 79}
79 80
81# Quick way to export a bunch of vars at once
82tc-export() {
83 local var
84 for var in "$@" ; do
85 eval tc-get${var} > /dev/null
86 done
87}
88
89# A simple way to see if we're using a cross-compiler ...
90tc-is-cross-compiler() {
91 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
92}
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}
155tc-endian() {
156 local host=$1
157 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
158 host=${host%%-*}
159
160 case ${host} in
161 alpha*) echo big;;
162 arm*b*) echo big;;
163 arm*) echo little;;
164 cris*) echo little;;
165 hppa*) echo big;;
166 i?86*) echo little;;
167 ia64*) echo little;;
168 m68*) echo big;;
169 mips*l*) echo little;;
170 mips*) echo big;;
171 powerpc*) echo big;;
172 s390*) echo big;;
173 sh*b*) echo big;;
174 sh*) echo little;;
175 sparc*) echo big;;
176 x86_64*) echo little;;
177 *) echo wtf;;
178 esac
179}
80 180
81# Returns the version as by `$CC -dumpversion` 181# Returns the version as by `$CC -dumpversion`
82gcc-fullversion() { 182gcc-fullversion() {
83 echo "$($(tc-getCC) -dumpversion)" 183 echo "$($(tc-getCC) -dumpversion)"
84} 184}
94gcc-minor-version() { 194gcc-minor-version() {
95 echo "$(gcc-version | cut -f2 -d.)" 195 echo "$(gcc-version | cut -f2 -d.)"
96} 196}
97# Returns the Micro version 197# Returns the Micro version
98gcc-micro-version() { 198gcc-micro-version() {
99 echo "$(gcc-fullversion | cut -f3 -d.)" 199 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)"
100} 200}
201
202# Returns requested gcc specs directive
203# Note; later specs normally overwrite earlier ones; however if a later
204# spec starts with '+' then it appends.
205# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
206# as "Reading <file>", in order.
207gcc-specs-directive() {
208 local cc=$(tc-getCC)
209 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 \
211'BEGIN { pspec=""; spec=""; outside=1 }
212$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
213 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
214 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
215 { spec=spec $0 }
216END { print spec }'
217 return 0
218}
219
220# Returns true if gcc sets relro
221gcc-specs-relro() {
222 local directive
223 directive=$(gcc-specs-directive link_command)
224 return $([[ ${directive/\{!norelro:} != ${directive} ]])
225}
226# Returns true if gcc sets now
227gcc-specs-now() {
228 local directive
229 directive=$(gcc-specs-directive link_command)
230 return $([[ ${directive/\{!nonow:} != ${directive} ]])
231}
232# Returns true if gcc builds PIEs
233gcc-specs-pie() {
234 local directive
235 directive=$(gcc-specs-directive cc1)
236 return $([[ ${directive/\{!nopie:} != ${directive} ]])
237}
238# Returns true if gcc builds with the stack protector
239gcc-specs-ssp() {
240 local directive
241 directive=$(gcc-specs-directive cc1)
242 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
243}
244# Returns true if gcc upgrades fstack-protector to fstack-protector-all
245gcc-specs-ssp-to-all() {
246 local directive
247 directive=$(gcc-specs-directive cc1)
248 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
249}
250
251
252# This function generate linker scripts in /usr/lib for dynamic
253# libs in /lib. This is to fix linking problems when you have
254# the .so in /lib, and the .a in /usr/lib. What happens is that
255# in some cases when linking dynamic, the .a in /usr/lib is used
256# instead of the .so in /lib due to gcc/libtool tweaking ld's
257# library search path. This cause many builds to fail.
258# See bug #4411 for more info.
259#
260# To use, simply call:
261#
262# gen_usr_ldscript libfoo.so
263#
264# Note that you should in general use the unversioned name of
265# the library, as ldconfig should usually update it correctly
266# to point to the latest version of the library present.
267_tc_gen_usr_ldscript() {
268 local lib libdir=$(get_libdir) output_format=""
269 # Just make sure it exists
270 dodir /usr/${libdir}
271
272 # OUTPUT_FORMAT gives hints to the linker as to what binary format
273 # is referenced ... makes multilib saner
274 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
275 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
276
277 for lib in "$@" ; do
278 if [[ ${USERLAND} == "Darwin" ]] ; then
279 ewarn "Not creating fake dynamic library for $lib on Darwin;"
280 ewarn "making a symlink instead."
281 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
282 else
283 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
284 /* GNU ld script
285 Since Gentoo has critical dynamic libraries
286 in /lib, and the static versions in /usr/lib,
287 we need to have a "fake" dynamic lib in /usr/lib,
288 otherwise we run into linking problems.
289
290 See bug http://bugs.gentoo.org/4411 for more info.
291 */
292 ${output_format}
293 GROUP ( /${libdir}/${lib} )
294 END_LDSCRIPT
295 fi
296 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
297 done
298}
299gen_usr_ldscript() { _tc_gen_usr_ldscript "$@" ; }

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