/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2005 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 1.36 2005/05/02 22:42:59 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.58 2006/04/02 10:10:59 robbat2 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 multilib 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
23 return 0 20 return 0
24 fi 21 fi
25 22
26 local search= 23 local search=
27 [[ -n $3 ]] && search=$(type -p "$3-${prog}") 24 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
28 [[ -z ${search} && -n $(get_abi_CHOST) ]] && search=$(type -p "$(get_abi_CHOST)-${prog}")
29 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}") 25 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
30 [[ -n ${search} ]] && prog=${search##*/} 26 [[ -n ${search} ]] && prog=${search##*/}
31 27
32 export ${var}=${prog} 28 export ${var}=${prog}
33 echo "${!var}" 29 echo "${!var}"
37tc-getAR() { tc-getPROG AR ar "$@"; } 33tc-getAR() { tc-getPROG AR ar "$@"; }
38# Returns the name of the assembler 34# Returns the name of the assembler
39tc-getAS() { tc-getPROG AS as "$@"; } 35tc-getAS() { tc-getPROG AS as "$@"; }
40# Returns the name of the C compiler 36# Returns the name of the C compiler
41tc-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 "$@"; }
42# Returns the name of the C++ compiler 40# Returns the name of the C++ compiler
43tc-getCXX() { tc-getPROG CXX g++ "$@"; } 41tc-getCXX() { tc-getPROG CXX g++ "$@"; }
44# Returns the name of the linker 42# Returns the name of the linker
45tc-getLD() { tc-getPROG LD ld "$@"; } 43tc-getLD() { tc-getPROG LD ld "$@"; }
46# Returns the name of the symbol/object thingy 44# Returns the name of the symbol/object thingy
52# Returns the name of the java compiler 50# Returns the name of the java compiler
53tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 51tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
54 52
55# Returns the name of the C compiler for build 53# Returns the name of the C compiler for build
56tc-getBUILD_CC() { 54tc-getBUILD_CC() {
55 local v
56 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
57 if [[ -n ${CC_FOR_BUILD} ]] ; then 57 if [[ -n ${!v} ]] ; then
58 export BUILD_CC=${CC_FOR_BUILD} 58 export BUILD_CC=${!v}
59 echo "${CC_FOR_BUILD}" 59 echo "${!v}"
60 return 0 60 return 0
61 fi 61 fi
62 done
62 63
63 local search= 64 local search=
64 if [[ -n ${CBUILD} ]] ; then 65 if [[ -n ${CBUILD} ]] ; then
65 search=$(type -p ${CBUILD}-gcc) 66 search=$(type -p ${CBUILD}-gcc)
66 search=${search##*/} 67 search=${search##*/}
67 else
68 search=gcc
69 fi 68 fi
69 search=${search:-gcc}
70 70
71 export BUILD_CC=${search} 71 export BUILD_CC=${search}
72 echo "${search}" 72 echo "${search}"
73} 73}
74 74
80 done 80 done
81} 81}
82 82
83# A simple way to see if we're using a cross-compiler ... 83# A simple way to see if we're using a cross-compiler ...
84tc-is-cross-compiler() { 84tc-is-cross-compiler() {
85 if [[ -n ${CBUILD} ]] ; then
86 return $([[ ${CBUILD} != ${CHOST} ]]) 85 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
87 fi
88 return 1
89} 86}
90 87
91 88
92# Parse information from CBUILD/CHOST/CTARGET rather than 89# Parse information from CBUILD/CHOST/CTARGET rather than
93# use external variables from the profile. 90# use external variables from the profile.
94tc-ninja_magic_to_arch() { 91tc-ninja_magic_to_arch() {
95ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 92ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
96 93
97 local type=$1 94 local type=$1
98 local host=$2 95 local host=$2
99 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 96 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
100 97
101 case ${host} in 98 case ${host} in
102 alpha*) echo alpha;; 99 alpha*) echo alpha;;
103 x86_64*) ninj x86_64 amd64;;
104 arm*) echo arm;; 100 arm*) echo arm;;
101 bfin*) ninj blackfin bfin;;
102 cris*) echo cris;;
105 hppa*) ninj parisc hppa;; 103 hppa*) ninj parisc hppa;;
104 i?86*) ninj i386 x86;;
106 ia64*) echo ia64;; 105 ia64*) echo ia64;;
107 m68*) echo m68k;; 106 m68*) echo m68k;;
108 mips*) echo mips;; 107 mips*) echo mips;;
109 powerpc64*) echo ppc64;; 108 nios2*) echo nios2;;
110 powerpc*) echo ppc;; 109 nios*) echo nios;;
110 powerpc*)
111 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
112 # have been unified into simply 'powerpc', but until 2.6.16,
113 # ppc32 is still using ARCH="ppc" as default
114 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
115 echo powerpc
116 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
117 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
118 echo powerpc
119 else
120 echo ppc
121 fi
122 elif [[ ${host} == powerpc64* ]] ; then
123 echo ppc64
124 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
125 ninj ppc64 ppc
126 else
127 echo ppc
128 fi
129 ;;
130 s390*) echo s390;;
131 sh64*) ninj sh64 sh;;
132 sh*) echo sh;;
111 sparc64*) ninj sparc64 sparc;; 133 sparc64*) ninj sparc64 sparc;;
112 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 134 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
113 && ninj sparc64 sparc \ 135 && ninj sparc64 sparc \
114 || echo sparc 136 || echo sparc
115 ;; 137 ;;
116 s390*) echo s390;; 138 vax*) echo vax;;
117 sh64*) ninj sh64 sh;; 139 x86_64*) ninj x86_64 amd64;;
118 sh*) echo sh;;
119 i?86*) ninj i386 x86;;
120 *) echo ${ARCH};; 140 *) echo ${ARCH};;
121 esac 141 esac
122} 142}
123tc-arch-kernel() { 143tc-arch-kernel() {
124 tc-ninja_magic_to_arch kern $@ 144 tc-ninja_magic_to_arch kern $@
131 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 151 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
132 host=${host%%-*} 152 host=${host%%-*}
133 153
134 case ${host} in 154 case ${host} in
135 alpha*) echo big;; 155 alpha*) echo big;;
136 x86_64*) echo little;;
137 arm*b*) echo big;; 156 arm*b*) echo big;;
138 arm*) echo little;; 157 arm*) echo little;;
158 cris*) echo little;;
139 hppa*) echo big;; 159 hppa*) echo big;;
160 i?86*) echo little;;
140 ia64*) echo little;; 161 ia64*) echo little;;
141 m68*) echo big;; 162 m68*) echo big;;
142 mips*l*) echo little;; 163 mips*l*) echo little;;
143 mips*) echo big;; 164 mips*) echo big;;
144 powerpc*) echo big;; 165 powerpc*) echo big;;
145 sparc*) echo big;;
146 s390*) echo big;; 166 s390*) echo big;;
147 sh*b*) echo big;; 167 sh*b*) echo big;;
148 sh*) echo little;; 168 sh*) echo little;;
169 sparc*) echo big;;
149 i?86*) echo little;; 170 x86_64*) echo little;;
150 *) echo wtf;; 171 *) echo wtf;;
151 esac 172 esac
152} 173}
153 174
154# Returns the version as by `$CC -dumpversion` 175# Returns the version as by `$CC -dumpversion`
169} 190}
170# Returns the Micro version 191# Returns the Micro version
171gcc-micro-version() { 192gcc-micro-version() {
172 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 193 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)"
173} 194}
195
196# Returns requested gcc specs directive
197# Note; later specs normally overwrite earlier ones; however if a later
198# spec starts with '+' then it appends.
199# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
200# as "Reading <file>", in order.
201gcc-specs-directive() {
202 local cc=$(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}

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