/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2005 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 1.40 2005/07/11 15:08:06 swegener 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 multilib 10inherit multilib
11
12 11
13DESCRIPTION="Based on the ${ECLASS} eclass" 12DESCRIPTION="Based on the ${ECLASS} eclass"
14 13
15tc-getPROG() { 14tc-getPROG() {
16 local var=$1 15 local var=$1
50# Returns the name of the java compiler 49# Returns the name of the java compiler
51tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 50tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
52 51
53# Returns the name of the C compiler for build 52# Returns the name of the C compiler for build
54tc-getBUILD_CC() { 53tc-getBUILD_CC() {
54 local v
55 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
55 if [[ -n ${CC_FOR_BUILD} ]] ; then 56 if [[ -n ${!v} ]] ; then
56 export BUILD_CC=${CC_FOR_BUILD} 57 export BUILD_CC=${!v}
57 echo "${CC_FOR_BUILD}" 58 echo "${!v}"
58 return 0 59 return 0
59 fi 60 fi
61 done
60 62
61 local search= 63 local search=
62 if [[ -n ${CBUILD} ]] ; then 64 if [[ -n ${CBUILD} ]] ; then
63 search=$(type -p ${CBUILD}-gcc) 65 search=$(type -p ${CBUILD}-gcc)
64 search=${search##*/} 66 search=${search##*/}
65 else
66 search=gcc
67 fi 67 fi
68 search=${search:-gcc}
68 69
69 export BUILD_CC=${search} 70 export BUILD_CC=${search}
70 echo "${search}" 71 echo "${search}"
71} 72}
72 73
78 done 79 done
79} 80}
80 81
81# A simple way to see if we're using a cross-compiler ... 82# A simple way to see if we're using a cross-compiler ...
82tc-is-cross-compiler() { 83tc-is-cross-compiler() {
83 if [[ -n ${CBUILD} ]] ; then
84 return $([[ ${CBUILD} != ${CHOST} ]]) 84 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
85 fi
86 return 1
87} 85}
88 86
89 87
90# Parse information from CBUILD/CHOST/CTARGET rather than 88# Parse information from CBUILD/CHOST/CTARGET rather than
91# use external variables from the profile. 89# use external variables from the profile.
98 96
99 case ${host} in 97 case ${host} in
100 alpha*) echo alpha;; 98 alpha*) echo alpha;;
101 x86_64*) ninj x86_64 amd64;; 99 x86_64*) ninj x86_64 amd64;;
102 arm*) echo arm;; 100 arm*) echo arm;;
101 thumb*) echo arm;;
103 hppa*) ninj parisc hppa;; 102 hppa*) ninj parisc hppa;;
104 ia64*) echo ia64;; 103 ia64*) echo ia64;;
105 m68*) echo m68k;; 104 m68*) echo m68k;;
106 mips*) echo mips;; 105 mips*) echo mips;;
107 powerpc64*) echo ppc64;; 106 powerpc64*) echo ppc64;;
135 case ${host} in 134 case ${host} in
136 alpha*) echo big;; 135 alpha*) echo big;;
137 x86_64*) echo little;; 136 x86_64*) echo little;;
138 arm*b*) echo big;; 137 arm*b*) echo big;;
139 arm*) echo little;; 138 arm*) echo little;;
139 thumb*) echo little;;
140 hppa*) echo big;; 140 hppa*) echo big;;
141 ia64*) echo little;; 141 ia64*) echo little;;
142 m68*) echo big;; 142 m68*) echo big;;
143 mips*l*) echo little;; 143 mips*l*) echo little;;
144 mips*) echo big;; 144 mips*) echo big;;
170} 170}
171# Returns the Micro version 171# Returns the Micro version
172gcc-micro-version() { 172gcc-micro-version() {
173 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 173 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)"
174} 174}
175
176# Returns requested gcc specs directive
177# Note; if a spec exists more than once (e.g. in more than one specs file)
178# the last one read is the active definition - i.e. they do not accumulate,
179# each new definition replaces any previous definition.
180gcc-specs-directive() {
181 local specfiles=$($(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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