/[gentoo-x86]/eclass/toolchain-funcs.eclass
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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 1.1 2004/10/13 14:14:07 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 eutils 10inherit multilib
11
12ECLASS=toolfuncs
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 "$@"; }
44# Returns the name of the symbol/object thingy
45tc-getNM() { tc-getPROG NM nm "$@"; }
46# Returns the name of the archiver indexer
47tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
48# Returns the name of the fortran compiler
49tc-getF77() { tc-getPROG F77 f77 "$@"; }
50# Returns the name of the java compiler
51tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
52
53# Returns the name of the C compiler for build
54tc-getBUILD_CC() {
55 local v
56 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
28 if [ -n "${CHOST}" ] ; then 57 if [[ -n ${!v} ]] ; then
29 search="$(type -p "${CHOST}-${prog}")" 58 export BUILD_CC=${!v}
30 else 59 echo "${!v}"
31 if [ -n "${CTARGET}" ] ; then 60 return 0
32 search="$(type -p "${CTARGET}-${prog}")"
33 fi 61 fi
62 done
63
64 local search=
65 if [[ -n ${CBUILD} ]] ; then
66 search=$(type -p ${CBUILD}-gcc)
67 search=${search##*/}
34 fi 68 fi
69 search=${search:-gcc}
35 70
36 if [ -z "${search}" ] ; then 71 export BUILD_CC=${search}
37 prog="${search##*/}"
38 fi
39 export ${var}="${prog}"
40 echo "${!var}" 72 echo "${search}"
41} 73}
42 74
43# Returns the name of the archiver 75# Quick way to export a bunch of vars at once
44tc-getAR() { tc-getPROG AR ar; } 76tc-export() {
45# Returns the name of the assembler 77 local var
46tc-getAS() { tc-getPROG AS as; } 78 for var in "$@" ; do
47# Returns the name of the C compiler 79 eval tc-get${var} > /dev/null
48tc-getCC() { tc-getPROG CC gcc; } 80 done
49# Returns the name of the C++ compiler 81}
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 82
83# A simple way to see if we're using a cross-compiler ...
84tc-is-cross-compiler() {
85 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
86}
58 87
88
89# Parse information from CBUILD/CHOST/CTARGET rather than
90# use external variables from the profile.
91tc-ninja_magic_to_arch() {
92ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
93
94 local type=$1
95 local host=$2
96 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
97
98 case ${host} in
99 alpha*) echo alpha;;
100 arm*) echo arm;;
101 bfin*) ninj blackfin bfin;;
102 cris*) echo cris;;
103 hppa*) ninj parisc hppa;;
104 i?86*) ninj i386 x86;;
105 ia64*) echo ia64;;
106 m68*) echo m68k;;
107 mips*) echo mips;;
108 nios2*) echo nios2;;
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;;
133 sparc64*) ninj sparc64 sparc;;
134 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
135 && ninj sparc64 sparc \
136 || echo sparc
137 ;;
138 vax*) echo vax;;
139 x86_64*) ninj x86_64 amd64;;
140 *) echo ${ARCH};;
141 esac
142}
143tc-arch-kernel() {
144 tc-ninja_magic_to_arch kern $@
145}
146tc-arch() {
147 tc-ninja_magic_to_arch portage $@
148}
149tc-endian() {
150 local host=$1
151 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
152 host=${host%%-*}
153
154 case ${host} in
155 alpha*) echo big;;
156 arm*b*) echo big;;
157 arm*) echo little;;
158 cris*) echo little;;
159 hppa*) echo big;;
160 i?86*) echo little;;
161 ia64*) echo little;;
162 m68*) echo big;;
163 mips*l*) echo little;;
164 mips*) echo big;;
165 powerpc*) echo big;;
166 s390*) echo big;;
167 sh*b*) echo big;;
168 sh*) echo little;;
169 sparc*) echo big;;
170 x86_64*) echo little;;
171 *) echo wtf;;
172 esac
173}
59 174
60# Returns the version as by `$CC -dumpversion` 175# Returns the version as by `$CC -dumpversion`
61gcc-fullversion() { 176gcc-fullversion() {
62 echo "$($(tc-getCC) -dumpversion)" 177 echo "$($(tc-getCC) -dumpversion)"
63} 178}
64# Returns the version, but only the <major>.<minor> 179# Returns the version, but only the <major>.<minor>
65gcc-version() { 180gcc-version() {
66 echo "$(cc-fullversion | cut -f1,2 -d.)" 181 echo "$(gcc-fullversion | cut -f1,2 -d.)"
67} 182}
68# Returns the Major version 183# Returns the Major version
69gcc-major-version() { 184gcc-major-version() {
70 echo "$(cc-version | cut -f1 -d.)" 185 echo "$(gcc-version | cut -f1 -d.)"
71} 186}
72# Returns the Minor version 187# Returns the Minor version
73gcc-minor-version() { 188gcc-minor-version() {
74 echo "$(cc-version | cut -f2 -d.)" 189 echo "$(gcc-version | cut -f2 -d.)"
75} 190}
76# Returns the Micro version 191# Returns the Micro version
77gcc-micro-version() { 192gcc-micro-version() {
78 echo "$(cc-fullversion | cut -f3 -d.)" 193 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)"
79} 194}
195
196# Returns requested gcc specs directive
197# Note; later specs normally overwrite earlier ones; however if a later
198# spec starts with '+' then it appends.
199# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
200# as "Reading <file>", in order.
201gcc-specs-directive() {
202 local cc=$(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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