/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.8 Revision 1.71
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 1.8 2004/10/29 04:13:10 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.71 2007/07/11 04:06:29 robbat2 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
10inherit eutils 10___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11 11[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
12ECLASS=toolchain-funcs
13INHERITED="$INHERITED $ECLASS"
14 12
15DESCRIPTION="Based on the ${ECLASS} eclass" 13DESCRIPTION="Based on the ${ECLASS} eclass"
16 14
17tc-getPROG() { 15tc-getPROG() {
18 local var="$1" 16 local var=$1
19 local prog="$2" 17 local prog=$2
20 local search=""
21 18
22 if [ -n "${!var}" ] ; then 19 if [[ -n ${!var} ]] ; then
23 echo "${!var}" 20 echo "${!var}"
24 return 0 21 return 0
25 fi 22 fi
26 23
27 # how should we handle the host/target/build ? 24 local search=
28 if [ -n "${CTARGET}" ] ; then 25 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
29 search="$(type -p "${CTARGET}-${prog}")" 26 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
30 else 27 [[ -n ${search} ]] && prog=${search##*/}
31 if [ -n "${CHOST}" ] ; then
32 search="$(type -p "${CHOST}-${prog}")"
33 fi
34 fi
35 28
36 if [ -n "${search}" ] ; then
37 prog="${search##*/}"
38 fi
39 export ${var}="${prog}" 29 export ${var}=${prog}
40 echo "${!var}" 30 echo "${!var}"
41} 31}
42 32
43# Returns the name of the archiver 33# Returns the name of the archiver
44tc-getAR() { tc-getPROG AR ar; } 34tc-getAR() { tc-getPROG AR ar "$@"; }
45# Returns the name of the assembler 35# Returns the name of the assembler
46tc-getAS() { tc-getPROG AS as; } 36tc-getAS() { tc-getPROG AS as "$@"; }
47# Returns the name of the C compiler 37# Returns the name of the C compiler
48tc-getCC() { tc-getPROG CC gcc; } 38tc-getCC() { tc-getPROG CC gcc "$@"; }
39# Returns the name of the C preprocessor
40tc-getCPP() { tc-getPROG CPP cpp "$@"; }
49# Returns the name of the C++ compiler 41# Returns the name of the C++ compiler
50tc-getCXX() { tc-getPROG CXX g++; } 42tc-getCXX() { tc-getPROG CXX g++ "$@"; }
51# Returns the name of the linker 43# Returns the name of the linker
52tc-getLD() { tc-getPROG LD ld; } 44tc-getLD() { tc-getPROG LD ld "$@"; }
45# Returns the name of the strip prog
46tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
53# Returns the name of the symbol/object thingy 47# Returns the name of the symbol/object thingy
54tc-getNM() { tc-getPROG NM nm; } 48tc-getNM() { tc-getPROG NM nm "$@"; }
55# Returns the name of the archiver indexer 49# Returns the name of the archiver indexer
56tc-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 "$@"; }
57# Returns the name of the fortran compiler 55# Returns the name of the fortran compiler
58tc-getF77() { tc-getPROG F77 f77; } 56tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; }
59# Returns the name of the java compiler 57# Returns the name of the java compiler
60tc-getGCJ() { tc-getPROG GCJ gcj; } 58tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
61 59
62# Returns the name of the C compiler for build 60# Returns the name of the C compiler for build
63tc-getBUILD_CC() { 61tc-getBUILD_CC() {
64 if [ -n "${CC_FOR_BUILD}" ] ; then 62 local v
65 echo "${CC_FOR_BUILD}" 63 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
64 if [[ -n ${!v} ]] ; then
65 export BUILD_CC=${!v}
66 echo "${!v}"
66 return 0 67 return 0
68 fi
69 done
70
71 local search=
72 if [[ -n ${CBUILD} ]] ; then
73 search=$(type -p ${CBUILD}-gcc)
74 search=${search##*/}
67 fi 75 fi
76 search=${search:-gcc}
68 77
69 if [ -n "${CBUILD}" ] ; then 78 export BUILD_CC=${search}
70 local cc="$(type -p "${CBUILD}-gcc")"
71 if [ -n "${cc}" ] ; then
72 echo "${cc}" 79 echo "${search}"
73 fi
74 fi
75
76 echo "gcc"
77} 80}
78 81
82# Quick way to export a bunch of vars at once
83tc-export() {
84 local var
85 for var in "$@" ; do
86 eval tc-get${var} > /dev/null
87 done
88}
89
90# A simple way to see if we're using a cross-compiler ...
91tc-is-cross-compiler() {
92 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
93}
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}
114
115# Parse information from CBUILD/CHOST/CTARGET rather than
116# use external variables from the profile.
117tc-ninja_magic_to_arch() {
118ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
119
120 local type=$1
121 local host=$2
122 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
123
124 case ${host} in
125 alpha*) echo alpha;;
126 arm*) echo arm;;
127 bfin*) ninj blackfin bfin;;
128 cris*) echo cris;;
129 hppa*) ninj parisc hppa;;
130 i?86*) ninj i386 x86;;
131 ia64*) echo ia64;;
132 m68*) echo m68k;;
133 mips*) echo mips;;
134 nios2*) echo nios2;;
135 nios*) echo nios;;
136 powerpc*)
137 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
138 # have been unified into simply 'powerpc', but until 2.6.16,
139 # ppc32 is still using ARCH="ppc" as default
140 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
141 echo powerpc
142 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
143 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
144 echo powerpc
145 else
146 echo ppc
147 fi
148 elif [[ ${host} == powerpc64* ]] ; then
149 echo ppc64
150 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
151 ninj ppc64 ppc
152 else
153 echo ppc
154 fi
155 ;;
156 s390*) echo s390;;
157 sh64*) ninj sh64 sh;;
158 sh*) echo sh;;
159 sparc64*) ninj sparc64 sparc;;
160 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
161 && ninj sparc64 sparc \
162 || echo sparc
163 ;;
164 vax*) echo vax;;
165 x86_64*) ninj x86_64 amd64;;
166 *) echo ${ARCH};;
167 esac
168}
169tc-arch-kernel() {
170 tc-ninja_magic_to_arch kern $@
171}
172tc-arch() {
173 tc-ninja_magic_to_arch portage $@
174}
175tc-endian() {
176 local host=$1
177 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
178 host=${host%%-*}
179
180 case ${host} in
181 alpha*) echo big;;
182 arm*b*) echo big;;
183 arm*) echo little;;
184 cris*) echo little;;
185 hppa*) echo big;;
186 i?86*) echo little;;
187 ia64*) echo little;;
188 m68*) echo big;;
189 mips*l*) echo little;;
190 mips*) echo big;;
191 powerpc*) echo big;;
192 s390*) echo big;;
193 sh*b*) echo big;;
194 sh*) echo little;;
195 sparc*) echo big;;
196 x86_64*) echo little;;
197 *) echo wtf;;
198 esac
199}
79 200
80# Returns the version as by `$CC -dumpversion` 201# Returns the version as by `$CC -dumpversion`
81gcc-fullversion() { 202gcc-fullversion() {
82 echo "$($(tc-getCC) -dumpversion)" 203 $(tc-getCC "$@") -dumpversion
83} 204}
84# Returns the version, but only the <major>.<minor> 205# Returns the version, but only the <major>.<minor>
85gcc-version() { 206gcc-version() {
86 echo "$(gcc-fullversion | cut -f1,2 -d.)" 207 gcc-fullversion "$@" | cut -f1,2 -d.
87} 208}
88# Returns the Major version 209# Returns the Major version
89gcc-major-version() { 210gcc-major-version() {
90 echo "$(gcc-version | cut -f1 -d.)" 211 gcc-version "$@" | cut -f1 -d.
91} 212}
92# Returns the Minor version 213# Returns the Minor version
93gcc-minor-version() { 214gcc-minor-version() {
94 echo "$(gcc-version | cut -f2 -d.)" 215 gcc-version "$@" | cut -f2 -d.
95} 216}
96# Returns the Micro version 217# Returns the Micro version
97gcc-micro-version() { 218gcc-micro-version() {
98 echo "$(gcc-fullversion | cut -f3 -d.)" 219 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
99} 220}
221# Returns the installation directory - internal toolchain
222# function for use by _gcc-specs-exists (for flag-o-matic).
223_gcc-install-dir() {
224 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\
225 awk '$1=="install:" {print $2}')"
226}
227# Returns true if the indicated specs file exists - internal toolchain
228# function for use by flag-o-matic.
229_gcc-specs-exists() {
230 [[ -f $(_gcc-install-dir)/$1 ]]
231}
232
233# Returns requested gcc specs directive unprocessed - for used by
234# gcc-specs-directive()
235# Note; later specs normally overwrite earlier ones; however if a later
236# spec starts with '+' then it appends.
237# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
238# as "Reading <file>", in order. Strictly speaking, if there's a
239# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
240# the same token anything from 'gcc -dumpspecs' is overridden by
241# the contents of $(gcc_install_dir)/specs so the result is the
242# same either way.
243_gcc-specs-directive_raw() {
244 local cc=$(tc-getCC)
245 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
246 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
247'BEGIN { pspec=""; spec=""; outside=1 }
248$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
249 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
250 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
251 { spec=spec $0 }
252END { print spec }'
253 return 0
254}
255
256# Return the requested gcc specs directive, with all included
257# specs expanded.
258# Note, it does not check for inclusion loops, which cause it
259# to never finish - but such loops are invalid for gcc and we're
260# assuming gcc is operational.
261gcc-specs-directive() {
262 local directive subdname subdirective
263 directive="$(_gcc-specs-directive_raw $1)"
264 while [[ ${directive} == *%\(*\)* ]]; do
265 subdname=${directive/*%\(}
266 subdname=${subdname/\)*}
267 subdirective="$(_gcc-specs-directive_raw ${subdname})"
268 directive="${directive//\%(${subdname})/${subdirective}}"
269 done
270 echo "${directive}"
271 return 0
272}
273
274# Returns true if gcc sets relro
275gcc-specs-relro() {
276 local directive
277 directive=$(gcc-specs-directive link_command)
278 return $([[ ${directive/\{!norelro:} != ${directive} ]])
279}
280# Returns true if gcc sets now
281gcc-specs-now() {
282 local directive
283 directive=$(gcc-specs-directive link_command)
284 return $([[ ${directive/\{!nonow:} != ${directive} ]])
285}
286# Returns true if gcc builds PIEs
287gcc-specs-pie() {
288 local directive
289 directive=$(gcc-specs-directive cc1)
290 return $([[ ${directive/\{!nopie:} != ${directive} ]])
291}
292# Returns true if gcc builds with the stack protector
293gcc-specs-ssp() {
294 local directive
295 directive=$(gcc-specs-directive cc1)
296 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
297}
298# Returns true if gcc upgrades fstack-protector to fstack-protector-all
299gcc-specs-ssp-to-all() {
300 local directive
301 directive=$(gcc-specs-directive cc1)
302 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
303}
304
305
306# This function generate linker scripts in /usr/lib for dynamic
307# libs in /lib. This is to fix linking problems when you have
308# the .so in /lib, and the .a in /usr/lib. What happens is that
309# in some cases when linking dynamic, the .a in /usr/lib is used
310# instead of the .so in /lib due to gcc/libtool tweaking ld's
311# library search path. This cause many builds to fail.
312# See bug #4411 for more info.
313#
314# To use, simply call:
315#
316# gen_usr_ldscript libfoo.so
317#
318# Note that you should in general use the unversioned name of
319# the library, as ldconfig should usually update it correctly
320# to point to the latest version of the library present.
321gen_usr_ldscript() {
322 local lib libdir=$(get_libdir) output_format=""
323 # Just make sure it exists
324 dodir /usr/${libdir}
325
326 # OUTPUT_FORMAT gives hints to the linker as to what binary format
327 # is referenced ... makes multilib saner
328 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
329 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
330
331 for lib in "$@" ; do
332 if [[ ${USERLAND} == "Darwin" ]] ; then
333 ewarn "Not creating fake dynamic library for $lib on Darwin;"
334 ewarn "making a symlink instead."
335 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
336 else
337 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
338 /* GNU ld script
339 Since Gentoo has critical dynamic libraries
340 in /lib, and the static versions in /usr/lib,
341 we need to have a "fake" dynamic lib in /usr/lib,
342 otherwise we run into linking problems.
343
344 See bug http://bugs.gentoo.org/4411 for more info.
345 */
346 ${output_format}
347 GROUP ( /${libdir}/${lib} )
348 END_LDSCRIPT
349 fi
350 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
351 done
352}
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