/[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 1.26 2005/01/16 10:31:59 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.70 2007/06/16 07:11:43 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 ${host} ]] && host=${CTARGET:-${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 bfin*) ninj blackfin bfin;;
128 cris*) echo cris;;
102 hppa*) ninj parisc hppa;; 129 hppa*) ninj parisc hppa;;
130 i?86*) ninj i386 x86;;
103 ia64*) echo ia64;; 131 ia64*) echo ia64;;
104 m68*) echo m68k;; 132 m68*) echo m68k;;
105 mips*) echo mips;; 133 mips*) echo mips;;
106 powerpc64*) echo ppc64;; 134 nios2*) echo nios2;;
107 powerpc*) echo ppc;; 135 nios*) echo nios;;
108 sparc64*) ninj sparc64 sparc;; 136 powerpc*)
109 sparc*) echo sparc;; 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 ;;
110 s390*) echo s390;; 156 s390*) echo s390;;
111 sh64*) ninj sh64 sh;; 157 sh64*) ninj sh64 sh;;
112 sh*) echo sh;; 158 sh*) echo sh;;
113 i?86*) ninj i386 x86;; 159 sparc64*) ninj sparc64 sparc;;
114 *) echo wtf;; 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};;
115 esac 167 esac
116} 168}
117tc-arch-kernel() { 169tc-arch-kernel() {
118 tc-ninja_magic_to_arch kern $@ 170 tc-ninja_magic_to_arch kern $@
119} 171}
120tc-arch() { 172tc-arch() {
121 tc-ninja_magic_to_arch portage $@ 173 tc-ninja_magic_to_arch portage $@
122} 174}
123tc-endian() {
124 local host=$1
125 [[ -z ${host} ]] && host=${CHOST}
126
127 case ${host} in
128 alpha*) echo big;;
129 x86_64*) echo little;;
130 arm*eb-*) echo big;;
131 arm*) echo little;;
132 hppa*) echo big;;
133 ia64*) echo little;;
134 m68*) echo big;;
135 mips*el-*) echo little;;
136 mips*) echo big;;
137 powerpc*) echo big;;
138 sparc*) echo big;;
139 s390*) echo big;;
140 sh*el-) echo little;;
141 sh*) echo big;;
142 i?86*) echo little;;
143 *) echo wtf;;
144 esac
145}
146 175
147# Returns the version as by `$CC -dumpversion` 176# Returns the version as by `$CC -dumpversion`
148gcc-fullversion() { 177gcc-fullversion() {
149 echo "$($(tc-getCC) -dumpversion)" 178 $(tc-getCC "$@") -dumpversion
150} 179}
151# Returns the version, but only the <major>.<minor> 180# Returns the version, but only the <major>.<minor>
152gcc-version() { 181gcc-version() {
153 echo "$(gcc-fullversion | cut -f1,2 -d.)" 182 gcc-fullversion "$@" | cut -f1,2 -d.
154} 183}
155# Returns the Major version 184# Returns the Major version
156gcc-major-version() { 185gcc-major-version() {
157 echo "$(gcc-version | cut -f1 -d.)" 186 gcc-version "$@" | cut -f1 -d.
158} 187}
159# Returns the Minor version 188# Returns the Minor version
160gcc-minor-version() { 189gcc-minor-version() {
161 echo "$(gcc-version | cut -f2 -d.)" 190 gcc-version "$@" | cut -f2 -d.
162} 191}
163# Returns the Micro version 192# Returns the Micro version
164gcc-micro-version() { 193gcc-micro-version() {
165 echo "$(gcc-fullversion | cut -f3 -d.)" 194 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
166} 195}
196# Returns the installation directory - internal toolchain
197# function for use by _gcc-specs-exists (for flag-o-matic).
198_gcc-install-dir() {
199 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\
200 awk '$1=="install:" {print $2}')"
201}
202# Returns true if the indicated specs file exists - internal toolchain
203# function for use by flag-o-matic.
204_gcc-specs-exists() {
205 [[ -f $(_gcc-install-dir)/$1 ]]
206}
207
208# Returns requested gcc specs directive unprocessed - for used by
209# gcc-specs-directive()
210# Note; later specs normally overwrite earlier ones; however if a later
211# spec starts with '+' then it appends.
212# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
213# as "Reading <file>", in order. Strictly speaking, if there's a
214# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
215# the same token anything from 'gcc -dumpspecs' is overridden by
216# the contents of $(gcc_install_dir)/specs so the result is the
217# same either way.
218_gcc-specs-directive_raw() {
219 local cc=$(tc-getCC)
220 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
221 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
222'BEGIN { pspec=""; spec=""; outside=1 }
223$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
224 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
225 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
226 { spec=spec $0 }
227END { print spec }'
228 return 0
229}
230
231# Return the requested gcc specs directive, with all included
232# specs expanded.
233# Note, it does not check for inclusion loops, which cause it
234# to never finish - but such loops are invalid for gcc and we're
235# assuming gcc is operational.
236gcc-specs-directive() {
237 local directive subdname subdirective
238 directive="$(_gcc-specs-directive_raw $1)"
239 while [[ ${directive} == *%\(*\)* ]]; do
240 subdname=${directive/*%\(}
241 subdname=${subdname/\)*}
242 subdirective="$(_gcc-specs-directive_raw ${subdname})"
243 directive="${directive//\%(${subdname})/${subdirective}}"
244 done
245 echo "${directive}"
246 return 0
247}
248
249# Returns true if gcc sets relro
250gcc-specs-relro() {
251 local directive
252 directive=$(gcc-specs-directive link_command)
253 return $([[ ${directive/\{!norelro:} != ${directive} ]])
254}
255# Returns true if gcc sets now
256gcc-specs-now() {
257 local directive
258 directive=$(gcc-specs-directive link_command)
259 return $([[ ${directive/\{!nonow:} != ${directive} ]])
260}
261# Returns true if gcc builds PIEs
262gcc-specs-pie() {
263 local directive
264 directive=$(gcc-specs-directive cc1)
265 return $([[ ${directive/\{!nopie:} != ${directive} ]])
266}
267# Returns true if gcc builds with the stack protector
268gcc-specs-ssp() {
269 local directive
270 directive=$(gcc-specs-directive cc1)
271 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
272}
273# Returns true if gcc upgrades fstack-protector to fstack-protector-all
274gcc-specs-ssp-to-all() {
275 local directive
276 directive=$(gcc-specs-directive cc1)
277 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
278}
279
280
281# This function generate linker scripts in /usr/lib for dynamic
282# libs in /lib. This is to fix linking problems when you have
283# the .so in /lib, and the .a in /usr/lib. What happens is that
284# in some cases when linking dynamic, the .a in /usr/lib is used
285# instead of the .so in /lib due to gcc/libtool tweaking ld's
286# library search path. This cause many builds to fail.
287# See bug #4411 for more info.
288#
289# To use, simply call:
290#
291# gen_usr_ldscript libfoo.so
292#
293# Note that you should in general use the unversioned name of
294# the library, as ldconfig should usually update it correctly
295# to point to the latest version of the library present.
296gen_usr_ldscript() {
297 local lib libdir=$(get_libdir) output_format=""
298 # Just make sure it exists
299 dodir /usr/${libdir}
300
301 # OUTPUT_FORMAT gives hints to the linker as to what binary format
302 # is referenced ... makes multilib saner
303 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
304 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
305
306 for lib in "$@" ; do
307 if [[ ${USERLAND} == "Darwin" ]] ; then
308 ewarn "Not creating fake dynamic library for $lib on Darwin;"
309 ewarn "making a symlink instead."
310 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
311 else
312 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
313 /* GNU ld script
314 Since Gentoo has critical dynamic libraries
315 in /lib, and the static versions in /usr/lib,
316 we need to have a "fake" dynamic lib in /usr/lib,
317 otherwise we run into linking problems.
318
319 See bug http://bugs.gentoo.org/4411 for more info.
320 */
321 ${output_format}
322 GROUP ( /${libdir}/${lib} )
323 END_LDSCRIPT
324 fi
325 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
326 done
327}

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