/[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 1.7 2004/10/28 15:30:09 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.43 2005/09/15 00:13:10 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 "$@"; }
57# Returns the name of the fortran compiler 47# Returns the name of the fortran compiler
58tc-getF77() { tc-getPROG F77 f77; } 48tc-getF77() { tc-getPROG F77 f77 "$@"; }
49# Returns the name of the java compiler
50tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
59 51
60# Returns the name of the C compiler for build 52# Returns the name of the C compiler for build
61tc-getBUILD_CC() { 53tc-getBUILD_CC() {
62 if [ -n "${CC_FOR_BUILD}" ] ; then 54 local v
63 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}"
64 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##*/}
67 else
68 search=gcc
65 fi 69 fi
66 70
67 if [ -n "${CBUILD}" ] ; then 71 export BUILD_CC=${search}
68 local cc="$(type -p "${CBUILD}-gcc")"
69 if [ -n "${cc}" ] ; then
70 echo "${cc}" 72 echo "${search}"
71 fi
72 fi
73
74 echo "gcc"
75} 73}
76 74
75# Quick way to export a bunch of vars at once
76tc-export() {
77 local var
78 for var in "$@" ; do
79 eval tc-get${var} > /dev/null
80 done
81}
82
83# A simple way to see if we're using a cross-compiler ...
84tc-is-cross-compiler() {
85 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
86}
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 x86_64*) ninj x86_64 amd64;;
101 arm*) 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 ${host} in
135 alpha*) echo big;;
136 x86_64*) echo little;;
137 arm*b*) echo big;;
138 arm*) echo little;;
139 hppa*) echo big;;
140 ia64*) echo little;;
141 m68*) echo big;;
142 mips*l*) echo little;;
143 mips*) echo big;;
144 powerpc*) echo big;;
145 sparc*) echo big;;
146 s390*) echo big;;
147 sh*b*) echo big;;
148 sh*) echo little;;
149 i?86*) echo little;;
150 *) echo wtf;;
151 esac
152}
77 153
78# Returns the version as by `$CC -dumpversion` 154# Returns the version as by `$CC -dumpversion`
79gcc-fullversion() { 155gcc-fullversion() {
80 echo "$($(tc-getCC) -dumpversion)" 156 echo "$($(tc-getCC) -dumpversion)"
81} 157}
91gcc-minor-version() { 167gcc-minor-version() {
92 echo "$(gcc-version | cut -f2 -d.)" 168 echo "$(gcc-version | cut -f2 -d.)"
93} 169}
94# Returns the Micro version 170# Returns the Micro version
95gcc-micro-version() { 171gcc-micro-version() {
96 echo "$(gcc-fullversion | cut -f3 -d.)" 172 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)"
97} 173}
174
175# Returns requested gcc specs directive
176# Note; if a spec exists more than once (e.g. in more than one specs file)
177# the last one read is the active definition - i.e. they do not accumulate,
178# each new definition replaces any previous definition.
179gcc-specs-directive() {
180 local specfiles=$($(tc-getCC) -v 2>&1 | grep "^Reading" | awk '{print $NF}')
181 [[ -z ${specfiles} ]] && return 0
182 awk -v spec=$1 \
183'BEGIN { sstr=""; outside=1 }
184 $1=="*"spec":" { sstr=""; outside=0; next }
185 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
186 { sstr=sstr $0 }
187END { print sstr }' ${specfiles}
188}
189
190# Returns true if gcc sets relro
191gcc-specs-relro() {
192 local directive
193 directive=$(gcc-specs-directive link_command)
194 return $([[ ${directive/\{!norelro:} != ${directive} ]])
195}
196# Returns true if gcc sets now
197gcc-specs-now() {
198 local directive
199 directive=$(gcc-specs-directive link_command)
200 return $([[ ${directive/\{!nonow:} != ${directive} ]])
201}
202# Returns true if gcc builds PIEs
203gcc-specs-pie() {
204 local directive
205 directive=$(gcc-specs-directive cc1)
206 return $([[ ${directive/\{!nopie:} != ${directive} ]])
207}
208# Returns true if gcc builds with the stack protector
209gcc-specs-ssp() {
210 local directive
211 directive=$(gcc-specs-directive cc1)
212 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
213}

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