/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2005 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 1.6 2004/10/26 13:01:58 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.45 2005/10/06 01:52:51 vapier Exp $
4# 4#
5# Author: Toolchain Ninjas <ninjas@gentoo.org> 5# Author: Toolchain Ninjas <ninjas@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 "${!var}"
24 return 0 20 return 0
25 fi 21 fi
26 22
27 # how should we handle the host/target/build ? 23 local search=
28 if [ -n "${CTARGET}" ] ; then 24 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
29 search="$(type -p "${CTARGET}-${prog}")" 25 [[ -z ${search} && -n $(get_abi_CHOST) ]] && search=$(type -p "$(get_abi_CHOST)-${prog}")
30 else 26 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
31 if [ -n "${CHOST}" ] ; then 27 [[ -n ${search} ]] && prog=${search##*/}
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 "$@"; }
49# Returns the name of the C++ compiler 39# Returns the name of the C++ compiler
50tc-getCXX() { tc-getPROG CXX g++; } 40tc-getCXX() { tc-getPROG CXX g++ "$@"; }
51# Returns the name of the linker 41# Returns the name of the linker
52tc-getLD() { tc-getPROG LD ld; } 42tc-getLD() { tc-getPROG LD ld "$@"; }
53# Returns the name of the symbol/object thingy 43# Returns the name of the symbol/object thingy
54tc-getNM() { tc-getPROG NM nm; } 44tc-getNM() { tc-getPROG NM nm "$@"; }
55# Returns the name of the archiver indexer 45# Returns the name of the archiver indexer
56tc-getRANLIB() { tc-getPROG RANLIB ranlib; } 46tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
47# Returns the name of the fortran compiler
48tc-getF77() { tc-getPROG F77 f77 "$@"; }
49# Returns the name of the java compiler
50tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
57 51
58# Returns the name of the C compiler for build 52# Returns the name of the C compiler for build
59tc-getBUILD_CC() { 53tc-getBUILD_CC() {
60 if [ -n "${CC_FOR_BUILD}" ] ; then 54 local v
61 echo "${CC_FOR_BUILD}" 55 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
56 if [[ -n ${!v} ]] ; then
57 export BUILD_CC=${!v}
58 echo "${!v}"
62 return 0 59 return 0
60 fi
61 done
62
63 local search=
64 if [[ -n ${CBUILD} ]] ; then
65 search=$(type -p ${CBUILD}-gcc)
66 search=${search##*/}
63 fi 67 fi
68 search=${search:-gcc}
64 69
65 if [ -n "${CBUILD}" ] ; then 70 export BUILD_CC=${search}
66 local cc="$(type -p "${CBUILD}-gcc")"
67 if [ -n "${cc}" ] ; then
68 echo "${cc}" 71 echo "${search}"
69 fi
70 fi
71
72 echo "gcc"
73} 72}
74 73
74# Quick way to export a bunch of vars at once
75tc-export() {
76 local var
77 for var in "$@" ; do
78 eval tc-get${var} > /dev/null
79 done
80}
81
82# A simple way to see if we're using a cross-compiler ...
83tc-is-cross-compiler() {
84 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
85}
86
87
88# Parse information from CBUILD/CHOST/CTARGET rather than
89# use external variables from the profile.
90tc-ninja_magic_to_arch() {
91ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
92
93 local type=$1
94 local host=$2
95 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
96
97 case ${host} in
98 alpha*) echo alpha;;
99 x86_64*) ninj x86_64 amd64;;
100 arm*) echo arm;;
101 thumb*) echo arm;;
102 hppa*) ninj parisc hppa;;
103 ia64*) echo ia64;;
104 m68*) echo m68k;;
105 mips*) echo mips;;
106 powerpc64*) echo ppc64;;
107 powerpc*) [[ ${PROFILE_ARCH} == "ppc64" ]] \
108 && ninj ppc64 ppc \
109 || echo ppc
110 ;;
111 sparc64*) ninj sparc64 sparc;;
112 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
113 && ninj sparc64 sparc \
114 || echo sparc
115 ;;
116 s390*) echo s390;;
117 sh64*) ninj sh64 sh;;
118 sh*) echo sh;;
119 i?86*) ninj i386 x86;;
120 *) echo ${ARCH};;
121 esac
122}
123tc-arch-kernel() {
124 tc-ninja_magic_to_arch kern $@
125}
126tc-arch() {
127 tc-ninja_magic_to_arch portage $@
128}
129tc-endian() {
130 local host=$1
131 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
132 host=${host%%-*}
133
134 case ${host} in
135 alpha*) echo big;;
136 x86_64*) echo little;;
137 arm*b*) echo big;;
138 arm*) echo little;;
139 thumb*) echo little;;
140 hppa*) echo big;;
141 ia64*) echo little;;
142 m68*) echo big;;
143 mips*l*) echo little;;
144 mips*) echo big;;
145 powerpc*) echo big;;
146 sparc*) echo big;;
147 s390*) echo big;;
148 sh*b*) echo big;;
149 sh*) echo little;;
150 i?86*) echo little;;
151 *) echo wtf;;
152 esac
153}
75 154
76# Returns the version as by `$CC -dumpversion` 155# Returns the version as by `$CC -dumpversion`
77gcc-fullversion() { 156gcc-fullversion() {
78 echo "$($(tc-getCC) -dumpversion)" 157 echo "$($(tc-getCC) -dumpversion)"
79} 158}
89gcc-minor-version() { 168gcc-minor-version() {
90 echo "$(gcc-version | cut -f2 -d.)" 169 echo "$(gcc-version | cut -f2 -d.)"
91} 170}
92# Returns the Micro version 171# Returns the Micro version
93gcc-micro-version() { 172gcc-micro-version() {
94 echo "$(gcc-fullversion | cut -f3 -d.)" 173 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)"
95} 174}
175
176# Returns requested gcc specs directive
177# Note; if a spec exists more than once (e.g. in more than one specs file)
178# the last one read is the active definition - i.e. they do not accumulate,
179# each new definition replaces any previous definition.
180gcc-specs-directive() {
181 local specfiles=$($(tc-getCC) -v 2>&1 | grep "^Reading" | awk '{print $NF}')
182 [[ -z ${specfiles} ]] && return 0
183 awk -v spec=$1 \
184'BEGIN { sstr=""; outside=1 }
185 $1=="*"spec":" { sstr=""; outside=0; next }
186 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
187 { sstr=sstr $0 }
188END { print sstr }' ${specfiles}
189}
190
191# Returns true if gcc sets relro
192gcc-specs-relro() {
193 local directive
194 directive=$(gcc-specs-directive link_command)
195 return $([[ ${directive/\{!norelro:} != ${directive} ]])
196}
197# Returns true if gcc sets now
198gcc-specs-now() {
199 local directive
200 directive=$(gcc-specs-directive link_command)
201 return $([[ ${directive/\{!nonow:} != ${directive} ]])
202}
203# Returns true if gcc builds PIEs
204gcc-specs-pie() {
205 local directive
206 directive=$(gcc-specs-directive cc1)
207 return $([[ ${directive/\{!nopie:} != ${directive} ]])
208}
209# Returns true if gcc builds with the stack protector
210gcc-specs-ssp() {
211 local directive
212 directive=$(gcc-specs-directive cc1)
213 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
214}

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