/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Contents of /eclass/toolchain-funcs.eclass

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Revision 1.46 - (show annotations) (download)
Thu Oct 6 21:30:23 2005 UTC (8 years, 9 months ago) by kevquinn
Branch: MAIN
Changes since 1.45: +20 -11 lines
include dumpspecs output as first data for specs parsing
parse additional-style specs as well as replacement specs
add function to detect auto-upgrade of ssp to ssp-all

1 # Copyright 1999-2005 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.45 2005/10/06 01:52:51 vapier Exp $
4 #
5 # Author: Toolchain Ninjas <ninjas@gentoo.org>
6 #
7 # This eclass contains (or should) functions to get common info
8 # about the toolchain (libc/compiler/binutils/etc...)
9
10 inherit multilib
11
12 DESCRIPTION="Based on the ${ECLASS} eclass"
13
14 tc-getPROG() {
15 local var=$1
16 local prog=$2
17
18 if [[ -n ${!var} ]] ; then
19 echo "${!var}"
20 return 0
21 fi
22
23 local search=
24 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
25 [[ -z ${search} && -n $(get_abi_CHOST) ]] && search=$(type -p "$(get_abi_CHOST)-${prog}")
26 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
27 [[ -n ${search} ]] && prog=${search##*/}
28
29 export ${var}=${prog}
30 echo "${!var}"
31 }
32
33 # Returns the name of the archiver
34 tc-getAR() { tc-getPROG AR ar "$@"; }
35 # Returns the name of the assembler
36 tc-getAS() { tc-getPROG AS as "$@"; }
37 # Returns the name of the C compiler
38 tc-getCC() { tc-getPROG CC gcc "$@"; }
39 # Returns the name of the C++ compiler
40 tc-getCXX() { tc-getPROG CXX g++ "$@"; }
41 # Returns the name of the linker
42 tc-getLD() { tc-getPROG LD ld "$@"; }
43 # Returns the name of the symbol/object thingy
44 tc-getNM() { tc-getPROG NM nm "$@"; }
45 # Returns the name of the archiver indexer
46 tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
47 # Returns the name of the fortran compiler
48 tc-getF77() { tc-getPROG F77 f77 "$@"; }
49 # Returns the name of the java compiler
50 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
51
52 # Returns the name of the C compiler for build
53 tc-getBUILD_CC() {
54 local v
55 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
56 if [[ -n ${!v} ]] ; then
57 export BUILD_CC=${!v}
58 echo "${!v}"
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 fi
68 search=${search:-gcc}
69
70 export BUILD_CC=${search}
71 echo "${search}"
72 }
73
74 # Quick way to export a bunch of vars at once
75 tc-export() {
76 local var
77 for var in "$@" ; 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 ...
83 tc-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.
90 tc-ninja_magic_to_arch() {
91 ninj() { [[ ${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 }
123 tc-arch-kernel() {
124 tc-ninja_magic_to_arch kern $@
125 }
126 tc-arch() {
127 tc-ninja_magic_to_arch portage $@
128 }
129 tc-endian() {
130 local host=$1
131 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
132 host=${host%%-*}
133
134 case ${host} in
135 alpha*) echo big;;
136 x86_64*) echo little;;
137 arm*b*) echo big;;
138 arm*) echo little;;
139 thumb*) echo little;;
140 hppa*) echo big;;
141 ia64*) echo little;;
142 m68*) echo big;;
143 mips*l*) echo little;;
144 mips*) echo big;;
145 powerpc*) echo big;;
146 sparc*) echo big;;
147 s390*) echo big;;
148 sh*b*) echo big;;
149 sh*) echo little;;
150 i?86*) echo little;;
151 *) echo wtf;;
152 esac
153 }
154
155 # Returns the version as by `$CC -dumpversion`
156 gcc-fullversion() {
157 echo "$($(tc-getCC) -dumpversion)"
158 }
159 # Returns the version, but only the <major>.<minor>
160 gcc-version() {
161 echo "$(gcc-fullversion | cut -f1,2 -d.)"
162 }
163 # Returns the Major version
164 gcc-major-version() {
165 echo "$(gcc-version | cut -f1 -d.)"
166 }
167 # Returns the Minor version
168 gcc-minor-version() {
169 echo "$(gcc-version | cut -f2 -d.)"
170 }
171 # Returns the Micro version
172 gcc-micro-version() {
173 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)"
174 }
175
176 # Returns requested gcc specs directive
177 # Note; later specs normally overwrite earlier ones; however if a later
178 # spec starts with '+' then it appends.
179 # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
180 # as "Reading <file>", in order.
181 gcc-specs-directive() {
182 local specfiles=$($(tc-getCC) -v 2>&1 | awk '$1=="Reading" {print $NF}')
183 $(tc-getCC) -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
184 'BEGIN { pspec=""; spec=""; outside=1 }
185 $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
186 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
187 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
188 { spec=spec $0 }
189 END { print spec }'
190 return 0
191 }
192
193 # Returns true if gcc sets relro
194 gcc-specs-relro() {
195 local directive
196 directive=$(gcc-specs-directive link_command)
197 return $([[ ${directive/\{!norelro:} != ${directive} ]])
198 }
199 # Returns true if gcc sets now
200 gcc-specs-now() {
201 local directive
202 directive=$(gcc-specs-directive link_command)
203 return $([[ ${directive/\{!nonow:} != ${directive} ]])
204 }
205 # Returns true if gcc builds PIEs
206 gcc-specs-pie() {
207 local directive
208 directive=$(gcc-specs-directive cc1)
209 return $([[ ${directive/\{!nopie:} != ${directive} ]])
210 }
211 # Returns true if gcc builds with the stack protector
212 gcc-specs-ssp() {
213 local directive
214 directive=$(gcc-specs-directive cc1)
215 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
216 }
217 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
218 gcc-specs-ssp-to-all() {
219 local directive
220 directive=$(gcc-specs-directive cc1)
221 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
222 }

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