/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2007 Gentoo Foundation 1# Copyright 1999-2007 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 1.73 2007/07/22 19:59:48 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.82 2009/01/08 06:33:20 gengor Exp $
4# 4
5# @ECLASS: toolchain-funcs.eclass
6# @MAINTAINER:
5# Maintainer: Toolchain Ninjas <toolchain@gentoo.org> 7# Toolchain Ninjas <toolchain@gentoo.org>
6# 8# @BLURB: functions to query common info about the toolchain
7# This eclass contains (or should) functions to get common info 9# @DESCRIPTION:
8# about the toolchain (libc/compiler/binutils/etc...) 10# The toolchain-funcs aims to provide a complete suite of functions
11# for gleaning useful information about the toolchain and to simplify
12# ugly things like cross-compiling and multilib. All of this is done
13# in such a way that you can rely on the function always returning
14# something sane.
9 15
10___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes" 16___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
11[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib 17[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
12 18
13DESCRIPTION="Based on the ${ECLASS} eclass" 19DESCRIPTION="Based on the ${ECLASS} eclass"
28 34
29 export ${var}=${prog} 35 export ${var}=${prog}
30 echo "${!var}" 36 echo "${!var}"
31} 37}
32 38
33# Returns the name of the archiver 39# @FUNCTION: tc-getAR
40# @USAGE: [toolchain prefix]
41# @RETURN: name of the archiver
34tc-getAR() { tc-getPROG AR ar "$@"; } 42tc-getAR() { tc-getPROG AR ar "$@"; }
35# Returns the name of the assembler 43# @FUNCTION: tc-getAS
44# @USAGE: [toolchain prefix]
45# @RETURN: name of the assembler
36tc-getAS() { tc-getPROG AS as "$@"; } 46tc-getAS() { tc-getPROG AS as "$@"; }
47# @FUNCTION: tc-getCC
48# @USAGE: [toolchain prefix]
37# Returns the name of the C compiler 49# @RETURN: name of the C compiler
38tc-getCC() { tc-getPROG CC gcc "$@"; } 50tc-getCC() { tc-getPROG CC gcc "$@"; }
51# @FUNCTION: tc-getCPP
52# @USAGE: [toolchain prefix]
39# Returns the name of the C preprocessor 53# @RETURN: name of the C preprocessor
40tc-getCPP() { tc-getPROG CPP cpp "$@"; } 54tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55# @FUNCTION: tc-getCXX
56# @USAGE: [toolchain prefix]
41# Returns the name of the C++ compiler 57# @RETURN: name of the C++ compiler
42tc-getCXX() { tc-getPROG CXX g++ "$@"; } 58tc-getCXX() { tc-getPROG CXX g++ "$@"; }
43# Returns the name of the linker 59# @FUNCTION: tc-getLD
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the linker
44tc-getLD() { tc-getPROG LD ld "$@"; } 62tc-getLD() { tc-getPROG LD ld "$@"; }
45# Returns the name of the strip prog 63# @FUNCTION: tc-getSTRIP
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the strip program
46tc-getSTRIP() { tc-getPROG STRIP strip "$@"; } 66tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67# @FUNCTION: tc-getNM
68# @USAGE: [toolchain prefix]
47# Returns the name of the symbol/object thingy 69# @RETURN: name of the symbol/object thingy
48tc-getNM() { tc-getPROG NM nm "$@"; } 70tc-getNM() { tc-getPROG NM nm "$@"; }
71# @FUNCTION: tc-getRANLIB
72# @USAGE: [toolchain prefix]
49# Returns the name of the archiver indexer 73# @RETURN: name of the archiver indexer
50tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } 74tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
75# @FUNCTION: tc-getF77
76# @USAGE: [toolchain prefix]
51# Returns the name of the fortran 77 compiler 77# @RETURN: name of the Fortran 77 compiler
52tc-getF77() { tc-getPROG F77 f77 "$@"; } 78tc-getF77() { tc-getPROG F77 f77 "$@"; }
79# @FUNCTION: tc-getFC
80# @USAGE: [toolchain prefix]
53# Returns the name of the fortran 90 compiler 81# @RETURN: name of the Fortran 90 compiler
54tc-getF90() { tc-getPROG F90 gfortran "$@"; } 82tc-getFC() { tc-getPROG FC gfortran "$@"; }
55# Returns the name of the fortran compiler 83# @FUNCTION: tc-getGCJ
56tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; } 84# @USAGE: [toolchain prefix]
57# Returns the name of the java compiler 85# @RETURN: name of the java compiler
58tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 86tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
59 87
60# Returns the name of the C compiler for build 88# @FUNCTION: tc-getBUILD_CC
89# @USAGE: [toolchain prefix]
90# @RETURN: name of the C compiler for building binaries to run on the build machine
61tc-getBUILD_CC() { 91tc-getBUILD_CC() {
62 local v 92 local v
63 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do 93 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
64 if [[ -n ${!v} ]] ; then 94 if [[ -n ${!v} ]] ; then
65 export BUILD_CC=${!v} 95 export BUILD_CC=${!v}
77 107
78 export BUILD_CC=${search} 108 export BUILD_CC=${search}
79 echo "${search}" 109 echo "${search}"
80} 110}
81 111
112# @FUNCTION: tc-export
113# @USAGE: <list of toolchain variables>
114# @DESCRIPTION:
82# Quick way to export a bunch of vars at once 115# Quick way to export a bunch of compiler vars at once.
83tc-export() { 116tc-export() {
84 local var 117 local var
85 for var in "$@" ; do 118 for var in "$@" ; do
119 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
86 eval tc-get${var} > /dev/null 120 eval tc-get${var} > /dev/null
87 done 121 done
88} 122}
89 123
90# A simple way to see if we're using a cross-compiler ... 124# @FUNCTION: tc-is-cross-compiler
125# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
91tc-is-cross-compiler() { 126tc-is-cross-compiler() {
92 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 127 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
93} 128}
94 129
130# @FUNCTION: tc-is-softfloat
131# @DESCRIPTION:
95# See if this toolchain is a softfloat based one. 132# See if this toolchain is a softfloat based one.
133# @CODE
96# The possible return values: 134# The possible return values:
97# - only: the target is always softfloat (never had fpu) 135# - only: the target is always softfloat (never had fpu)
98# - yes: the target should support softfloat 136# - yes: the target should support softfloat
99# - no: the target should support hardfloat 137# - no: the target should support hardfloat
138# @CODE
100# This allows us to react differently where packages accept 139# This allows us to react differently where packages accept
101# softfloat flags in the case where support is optional, but 140# softfloat flags in the case where support is optional, but
102# rejects softfloat flags where the target always lacks an fpu. 141# rejects softfloat flags where the target always lacks an fpu.
103tc-is-softfloat() { 142tc-is-softfloat() {
104 case ${CTARGET} in 143 case ${CTARGET} in
126 arm*) echo arm;; 165 arm*) echo arm;;
127 avr*) ninj avr32 avr;; 166 avr*) ninj avr32 avr;;
128 bfin*) ninj blackfin bfin;; 167 bfin*) ninj blackfin bfin;;
129 cris*) echo cris;; 168 cris*) echo cris;;
130 hppa*) ninj parisc hppa;; 169 hppa*) ninj parisc hppa;;
131 i?86*) ninj i386 x86;; 170 i?86*)
171 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
172 # trees have been unified into 'x86'.
173 # FreeBSD still uses i386
174 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
175 echo i386
176 else
177 echo x86
178 fi
179 ;;
132 ia64*) echo ia64;; 180 ia64*) echo ia64;;
133 m68*) echo m68k;; 181 m68*) echo m68k;;
134 mips*) echo mips;; 182 mips*) echo mips;;
135 nios2*) echo nios2;; 183 nios2*) echo nios2;;
136 nios*) echo nios;; 184 nios*) echo nios;;
161 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 209 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
162 && ninj sparc64 sparc \ 210 && ninj sparc64 sparc \
163 || echo sparc 211 || echo sparc
164 ;; 212 ;;
165 vax*) echo vax;; 213 vax*) echo vax;;
166 x86_64*) ninj x86_64 amd64;; 214 x86_64*)
215 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
216 # trees have been unified into 'x86'.
217 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
218 echo x86
219 else
220 ninj x86_64 amd64
221 fi
222 ;;
167 223
168 # since our usage of tc-arch is largely concerned with 224 # since our usage of tc-arch is largely concerned with
169 # normalizing inputs for testing ${CTARGET}, let's filter 225 # normalizing inputs for testing ${CTARGET}, let's filter
170 # other cross targets (mingw and such) into the unknown. 226 # other cross targets (mingw and such) into the unknown.
171 *) echo unknown;; 227 *) echo unknown;;
172 esac 228 esac
173} 229}
230# @FUNCTION: tc-arch-kernel
231# @USAGE: [toolchain prefix]
232# @RETURN: name of the kernel arch according to the compiler target
174tc-arch-kernel() { 233tc-arch-kernel() {
175 tc-ninja_magic_to_arch kern $@ 234 tc-ninja_magic_to_arch kern "$@"
176} 235}
236# @FUNCTION: tc-arch
237# @USAGE: [toolchain prefix]
238# @RETURN: name of the portage arch according to the compiler target
177tc-arch() { 239tc-arch() {
178 tc-ninja_magic_to_arch portage $@ 240 tc-ninja_magic_to_arch portage "$@"
179} 241}
242
180tc-endian() { 243tc-endian() {
181 local host=$1 244 local host=$1
182 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 245 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
183 host=${host%%-*} 246 host=${host%%-*}
184 247
201 x86_64*) echo little;; 264 x86_64*) echo little;;
202 *) echo wtf;; 265 *) echo wtf;;
203 esac 266 esac
204} 267}
205 268
206# Returns the version as by `$CC -dumpversion` 269# @FUNCTION: gcc-fullversion
270# @RETURN: compiler version (major.minor.micro: [3.4.6])
207gcc-fullversion() { 271gcc-fullversion() {
208 $(tc-getCC "$@") -dumpversion 272 $(tc-getCC "$@") -dumpversion
209} 273}
210# Returns the version, but only the <major>.<minor> 274# @FUNCTION: gcc-version
275# @RETURN: compiler version (major.minor: [3.4].6)
211gcc-version() { 276gcc-version() {
212 gcc-fullversion "$@" | cut -f1,2 -d. 277 gcc-fullversion "$@" | cut -f1,2 -d.
213} 278}
214# Returns the Major version 279# @FUNCTION: gcc-major-version
280# @RETURN: major compiler version (major: [3].4.6)
215gcc-major-version() { 281gcc-major-version() {
216 gcc-version "$@" | cut -f1 -d. 282 gcc-version "$@" | cut -f1 -d.
217} 283}
218# Returns the Minor version 284# @FUNCTION: gcc-minor-version
285# @RETURN: minor compiler version (minor: 3.[4].6)
219gcc-minor-version() { 286gcc-minor-version() {
220 gcc-version "$@" | cut -f2 -d. 287 gcc-version "$@" | cut -f2 -d.
221} 288}
222# Returns the Micro version 289# @FUNCTION: gcc-micro-version
290# @RETURN: micro compiler version (micro: 3.4.[6])
223gcc-micro-version() { 291gcc-micro-version() {
224 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- 292 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
225} 293}
294
226# Returns the installation directory - internal toolchain 295# Returns the installation directory - internal toolchain
227# function for use by _gcc-specs-exists (for flag-o-matic). 296# function for use by _gcc-specs-exists (for flag-o-matic).
228_gcc-install-dir() { 297_gcc-install-dir() {
229 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\ 298 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
230 awk '$1=="install:" {print $2}')" 299 awk '$1=="install:" {print $2}')"
231} 300}
232# Returns true if the indicated specs file exists - internal toolchain 301# Returns true if the indicated specs file exists - internal toolchain
233# function for use by flag-o-matic. 302# function for use by flag-o-matic.
234_gcc-specs-exists() { 303_gcc-specs-exists() {
294 directive=$(gcc-specs-directive cc1) 363 directive=$(gcc-specs-directive cc1)
295 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 364 return $([[ ${directive/\{!nopie:} != ${directive} ]])
296} 365}
297# Returns true if gcc builds with the stack protector 366# Returns true if gcc builds with the stack protector
298gcc-specs-ssp() { 367gcc-specs-ssp() {
368 [[ $(test-flags-CC -fno-stack-protector) ]] || return 1
299 local directive 369 local directive
300 directive=$(gcc-specs-directive cc1) 370 directive=$(gcc-specs-directive cc1)
301 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 371 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]])
302} 372}
303# Returns true if gcc upgrades fstack-protector to fstack-protector-all 373# Returns true if gcc upgrades fstack-protector to fstack-protector-all
304gcc-specs-ssp-to-all() { 374gcc-specs-ssp-to-all() {
375 [[ $(test-flags-CC -fno-stack-protector-all) ]] || return 1
305 local directive 376 local directive
306 directive=$(gcc-specs-directive cc1) 377 directive=$(gcc-specs-directive cc1)
307 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 378 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]])
308} 379}
380# Returns true if gcc builds with fno-strict-overflow
381gcc-specs-nostrict() {
382 [[ $(test-flags-CC -fstrict-overflow) ]] || return 1
383 local directive
384 directive=$(gcc-specs-directive cc1)
385 return $([[ ${directive/\{!fstrict-overflow:} != ${directive} ]])
386}
309 387
310 388
389# @FUNCTION: gen_usr_ldscript
390# @USAGE: <list of libs to create linker scripts for>
391# @DESCRIPTION:
311# This function generate linker scripts in /usr/lib for dynamic 392# This function generate linker scripts in /usr/lib for dynamic
312# libs in /lib. This is to fix linking problems when you have 393# libs in /lib. This is to fix linking problems when you have
313# the .so in /lib, and the .a in /usr/lib. What happens is that 394# the .so in /lib, and the .a in /usr/lib. What happens is that
314# in some cases when linking dynamic, the .a in /usr/lib is used 395# in some cases when linking dynamic, the .a in /usr/lib is used
315# instead of the .so in /lib due to gcc/libtool tweaking ld's 396# instead of the .so in /lib due to gcc/libtool tweaking ld's
316# library search path. This cause many builds to fail. 397# library search path. This causes many builds to fail.
317# See bug #4411 for more info. 398# See bug #4411 for more info.
318# 399#
319# To use, simply call:
320#
321# gen_usr_ldscript libfoo.so
322#
323# Note that you should in general use the unversioned name of 400# Note that you should in general use the unversioned name of
324# the library, as ldconfig should usually update it correctly 401# the library (libfoo.so), as ldconfig should usually update it
325# to point to the latest version of the library present. 402# correctly to point to the latest version of the library present.
326gen_usr_ldscript() { 403gen_usr_ldscript() {
327 local lib libdir=$(get_libdir) output_format="" 404 local lib libdir=$(get_libdir) output_format=""
328 # Just make sure it exists 405 # Just make sure it exists
329 dodir /usr/${libdir} 406 dodir /usr/${libdir}
330 407

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