/[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 1.69 2007/03/27 01:46:50 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.88 2009/03/28 11:09:27 vapier 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-getOBJCOPY
76# @USAGE: [toolchain prefix]
77# @RETURN: name of the object copier
78tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
79# @FUNCTION: tc-getF77
80# @USAGE: [toolchain prefix]
51# Returns the name of the fortran 77 compiler 81# @RETURN: name of the Fortran 77 compiler
52tc-getF77() { tc-getPROG F77 f77 "$@"; } 82tc-getF77() { tc-getPROG F77 f77 "$@"; }
83# @FUNCTION: tc-getFC
84# @USAGE: [toolchain prefix]
53# Returns the name of the fortran 90 compiler 85# @RETURN: name of the Fortran 90 compiler
54tc-getF90() { tc-getPROG F90 gfortran "$@"; } 86tc-getFC() { tc-getPROG FC gfortran "$@"; }
55# Returns the name of the fortran compiler 87# @FUNCTION: tc-getGCJ
56tc-getFORTRAN() { tc-getPROG FORTRAN gfortran "$@"; } 88# @USAGE: [toolchain prefix]
57# Returns the name of the java compiler 89# @RETURN: name of the java compiler
58tc-getGCJ() { tc-getPROG GCJ gcj "$@"; } 90tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
59 91
60# Returns the name of the C compiler for build 92# @FUNCTION: tc-getBUILD_CC
93# @USAGE: [toolchain prefix]
94# @RETURN: name of the C compiler for building binaries to run on the build machine
61tc-getBUILD_CC() { 95tc-getBUILD_CC() {
62 local v 96 local v
63 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do 97 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
64 if [[ -n ${!v} ]] ; then 98 if [[ -n ${!v} ]] ; then
65 export BUILD_CC=${!v} 99 export BUILD_CC=${!v}
77 111
78 export BUILD_CC=${search} 112 export BUILD_CC=${search}
79 echo "${search}" 113 echo "${search}"
80} 114}
81 115
116# @FUNCTION: tc-export
117# @USAGE: <list of toolchain variables>
118# @DESCRIPTION:
82# Quick way to export a bunch of vars at once 119# Quick way to export a bunch of compiler vars at once.
83tc-export() { 120tc-export() {
84 local var 121 local var
85 for var in "$@" ; do 122 for var in "$@" ; do
123 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
86 eval tc-get${var} > /dev/null 124 eval tc-get${var} > /dev/null
87 done 125 done
88} 126}
89 127
90# A simple way to see if we're using a cross-compiler ... 128# @FUNCTION: tc-is-cross-compiler
129# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
91tc-is-cross-compiler() { 130tc-is-cross-compiler() {
92 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 131 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
93} 132}
94 133
134# @FUNCTION: tc-is-softfloat
135# @DESCRIPTION:
95# See if this toolchain is a softfloat based one. 136# See if this toolchain is a softfloat based one.
137# @CODE
96# The possible return values: 138# The possible return values:
97# - only: the target is always softfloat (never had fpu) 139# - only: the target is always softfloat (never had fpu)
98# - yes: the target should support softfloat 140# - yes: the target should support softfloat
99# - no: the target should support hardfloat 141# - no: the target should support hardfloat
142# @CODE
100# This allows us to react differently where packages accept 143# This allows us to react differently where packages accept
101# softfloat flags in the case where support is optional, but 144# softfloat flags in the case where support is optional, but
102# rejects softfloat flags where the target always lacks an fpu. 145# rejects softfloat flags where the target always lacks an fpu.
103tc-is-softfloat() { 146tc-is-softfloat() {
104 case ${CTARGET} in 147 case ${CTARGET} in
122 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 165 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
123 166
124 case ${host} in 167 case ${host} in
125 alpha*) echo alpha;; 168 alpha*) echo alpha;;
126 arm*) echo arm;; 169 arm*) echo arm;;
170 avr*) ninj avr32 avr;;
127 bfin*) ninj blackfin bfin;; 171 bfin*) ninj blackfin bfin;;
128 cris*) echo cris;; 172 cris*) echo cris;;
129 hppa*) ninj parisc hppa;; 173 hppa*) ninj parisc hppa;;
130 i?86*) ninj i386 x86;; 174 i?86*)
175 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
176 # trees have been unified into 'x86'.
177 # FreeBSD still uses i386
178 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
179 echo i386
180 else
181 echo x86
182 fi
183 ;;
131 ia64*) echo ia64;; 184 ia64*) echo ia64;;
132 m68*) echo m68k;; 185 m68*) echo m68k;;
133 mips*) echo mips;; 186 mips*) echo mips;;
134 nios2*) echo nios2;; 187 nios2*) echo nios2;;
135 nios*) echo nios;; 188 nios*) echo nios;;
160 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 213 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
161 && ninj sparc64 sparc \ 214 && ninj sparc64 sparc \
162 || echo sparc 215 || echo sparc
163 ;; 216 ;;
164 vax*) echo vax;; 217 vax*) echo vax;;
165 x86_64*) ninj x86_64 amd64;; 218 x86_64*)
166 *) echo ${ARCH};; 219 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
220 # trees have been unified into 'x86'.
221 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
222 echo x86
223 else
224 ninj x86_64 amd64
225 fi
226 ;;
227
228 # since our usage of tc-arch is largely concerned with
229 # normalizing inputs for testing ${CTARGET}, let's filter
230 # other cross targets (mingw and such) into the unknown.
231 *) echo unknown;;
167 esac 232 esac
168} 233}
234# @FUNCTION: tc-arch-kernel
235# @USAGE: [toolchain prefix]
236# @RETURN: name of the kernel arch according to the compiler target
169tc-arch-kernel() { 237tc-arch-kernel() {
170 tc-ninja_magic_to_arch kern $@ 238 tc-ninja_magic_to_arch kern "$@"
171} 239}
240# @FUNCTION: tc-arch
241# @USAGE: [toolchain prefix]
242# @RETURN: name of the portage arch according to the compiler target
172tc-arch() { 243tc-arch() {
173 tc-ninja_magic_to_arch portage $@ 244 tc-ninja_magic_to_arch portage "$@"
174} 245}
175 246
176# Returns the version as by `$CC -dumpversion` 247tc-endian() {
248 local host=$1
249 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
250 host=${host%%-*}
251
252 case ${host} in
253 alpha*) echo big;;
254 arm*b*) echo big;;
255 arm*) echo little;;
256 cris*) echo little;;
257 hppa*) echo big;;
258 i?86*) echo little;;
259 ia64*) echo little;;
260 m68*) echo big;;
261 mips*l*) echo little;;
262 mips*) echo big;;
263 powerpc*) echo big;;
264 s390*) echo big;;
265 sh*b*) echo big;;
266 sh*) echo little;;
267 sparc*) echo big;;
268 x86_64*) echo little;;
269 *) echo wtf;;
270 esac
271}
272
273# @FUNCTION: gcc-fullversion
274# @RETURN: compiler version (major.minor.micro: [3.4.6])
177gcc-fullversion() { 275gcc-fullversion() {
178 $(tc-getCC "$@") -dumpversion 276 $(tc-getCC "$@") -dumpversion
179} 277}
180# Returns the version, but only the <major>.<minor> 278# @FUNCTION: gcc-version
279# @RETURN: compiler version (major.minor: [3.4].6)
181gcc-version() { 280gcc-version() {
182 gcc-fullversion "$@" | cut -f1,2 -d. 281 gcc-fullversion "$@" | cut -f1,2 -d.
183} 282}
184# Returns the Major version 283# @FUNCTION: gcc-major-version
284# @RETURN: major compiler version (major: [3].4.6)
185gcc-major-version() { 285gcc-major-version() {
186 gcc-version "$@" | cut -f1 -d. 286 gcc-version "$@" | cut -f1 -d.
187} 287}
188# Returns the Minor version 288# @FUNCTION: gcc-minor-version
289# @RETURN: minor compiler version (minor: 3.[4].6)
189gcc-minor-version() { 290gcc-minor-version() {
190 gcc-version "$@" | cut -f2 -d. 291 gcc-version "$@" | cut -f2 -d.
191} 292}
192# Returns the Micro version 293# @FUNCTION: gcc-micro-version
294# @RETURN: micro compiler version (micro: 3.4.[6])
193gcc-micro-version() { 295gcc-micro-version() {
194 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- 296 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
195} 297}
298
196# Returns the installation directory - internal toolchain 299# Returns the installation directory - internal toolchain
197# function for use by _gcc-specs-exists (for flag-o-matic). 300# function for use by _gcc-specs-exists (for flag-o-matic).
198_gcc-install-dir() { 301_gcc-install-dir() {
199 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\ 302 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
200 awk '$1=="install:" {print $2}')" 303 awk '$1=="install:" {print $2}')"
201} 304}
202# Returns true if the indicated specs file exists - internal toolchain 305# Returns true if the indicated specs file exists - internal toolchain
203# function for use by flag-o-matic. 306# function for use by flag-o-matic.
204_gcc-specs-exists() { 307_gcc-specs-exists() {
248 351
249# Returns true if gcc sets relro 352# Returns true if gcc sets relro
250gcc-specs-relro() { 353gcc-specs-relro() {
251 local directive 354 local directive
252 directive=$(gcc-specs-directive link_command) 355 directive=$(gcc-specs-directive link_command)
253 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 356 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
254} 357}
255# Returns true if gcc sets now 358# Returns true if gcc sets now
256gcc-specs-now() { 359gcc-specs-now() {
257 local directive 360 local directive
258 directive=$(gcc-specs-directive link_command) 361 directive=$(gcc-specs-directive link_command)
259 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 362 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
260} 363}
261# Returns true if gcc builds PIEs 364# Returns true if gcc builds PIEs
262gcc-specs-pie() { 365gcc-specs-pie() {
263 local directive 366 local directive
264 directive=$(gcc-specs-directive cc1) 367 directive=$(gcc-specs-directive cc1)
265 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 368 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
266} 369}
267# Returns true if gcc builds with the stack protector 370# Returns true if gcc builds with the stack protector
268gcc-specs-ssp() { 371gcc-specs-ssp() {
269 local directive 372 local directive
270 directive=$(gcc-specs-directive cc1) 373 directive=$(gcc-specs-directive cc1)
271 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 374 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
272} 375}
273# Returns true if gcc upgrades fstack-protector to fstack-protector-all 376# Returns true if gcc upgrades fstack-protector to fstack-protector-all
274gcc-specs-ssp-to-all() { 377gcc-specs-ssp-to-all() {
275 local directive 378 local directive
276 directive=$(gcc-specs-directive cc1) 379 directive=$(gcc-specs-directive cc1)
277 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 380 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
278} 381}
382# Returns true if gcc builds with fno-strict-overflow
383gcc-specs-nostrict() {
384 local directive
385 directive=$(gcc-specs-directive cc1)
386 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
387}
279 388
280 389
390# @FUNCTION: gen_usr_ldscript
391# @USAGE: [-a] <list of libs to create linker scripts for>
392# @DESCRIPTION:
281# This function generate linker scripts in /usr/lib for dynamic 393# This function generate linker scripts in /usr/lib for dynamic
282# libs in /lib. This is to fix linking problems when you have 394# libs in /lib. This is to fix linking problems when you have
283# the .so in /lib, and the .a in /usr/lib. What happens is that 395# the .so in /lib, and the .a in /usr/lib. What happens is that
284# in some cases when linking dynamic, the .a in /usr/lib is used 396# in some cases when linking dynamic, the .a in /usr/lib is used
285# instead of the .so in /lib due to gcc/libtool tweaking ld's 397# instead of the .so in /lib due to gcc/libtool tweaking ld's
286# library search path. This cause many builds to fail. 398# library search path. This causes many builds to fail.
287# See bug #4411 for more info. 399# See bug #4411 for more info.
288# 400#
289# To use, simply call:
290#
291# gen_usr_ldscript libfoo.so
292#
293# Note that you should in general use the unversioned name of 401# Note that you should in general use the unversioned name of
294# the library, as ldconfig should usually update it correctly 402# the library (libfoo.so), as ldconfig should usually update it
295# to point to the latest version of the library present. 403# correctly to point to the latest version of the library present.
296_tc_gen_usr_ldscript() { 404gen_usr_ldscript() {
297 local lib libdir=$(get_libdir) output_format="" 405 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
298 # Just make sure it exists 406 # Just make sure it exists
299 dodir /usr/${libdir} 407 dodir /usr/${libdir}
408
409 if [[ $1 == "-a" ]] ; then
410 auto=true
411 shift
412 dodir /${libdir}
413 fi
300 414
301 # OUTPUT_FORMAT gives hints to the linker as to what binary format 415 # OUTPUT_FORMAT gives hints to the linker as to what binary format
302 # is referenced ... makes multilib saner 416 # is referenced ... makes multilib saner
303 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 417 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
304 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 418 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
307 if [[ ${USERLAND} == "Darwin" ]] ; then 421 if [[ ${USERLAND} == "Darwin" ]] ; then
308 ewarn "Not creating fake dynamic library for $lib on Darwin;" 422 ewarn "Not creating fake dynamic library for $lib on Darwin;"
309 ewarn "making a symlink instead." 423 ewarn "making a symlink instead."
310 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}" 424 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
311 else 425 else
426 local tlib
427 if ${auto} ; then
428 lib="lib${lib}${suffix}"
429 tlib=$(scanelf -qF'%S#F' "${D}"/usr/${libdir}/${lib})
430 mv "${D}"/usr/${libdir}/${lib}* "${D}"/${libdir}/ || die
431 # some SONAMEs are funky: they encode a version before the .so
432 if [[ ${tlib} != ${lib}* ]] ; then
433 mv "${D}"/usr/${libdir}/${tlib}* "${D}"/${libdir}/ || die
434 fi
435 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
436 rm -f "${D}"/${libdir}/${lib}
437 else
438 tlib=${lib}
439 fi
312 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 440 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
313 /* GNU ld script 441 /* GNU ld script
314 Since Gentoo has critical dynamic libraries 442 Since Gentoo has critical dynamic libraries in /lib, and the static versions
315 in /lib, and the static versions in /usr/lib, 443 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
316 we need to have a "fake" dynamic lib in /usr/lib, 444 run into linking problems. This "fake" dynamic lib is a linker script that
317 otherwise we run into linking problems. 445 redirects the linker to the real lib. And yes, this works in the cross-
446 compiling scenario as the sysroot-ed linker will prepend the real path.
318 447
319 See bug http://bugs.gentoo.org/4411 for more info. 448 See bug http://bugs.gentoo.org/4411 for more info.
320 */ 449 */
321 ${output_format} 450 ${output_format}
322 GROUP ( /${libdir}/${lib} ) 451 GROUP ( /${libdir}/${tlib} )
323 END_LDSCRIPT 452 END_LDSCRIPT
453 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
324 fi 454 fi
325 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
326 done 455 done
327} 456}
328gen_usr_ldscript() { _tc_gen_usr_ldscript "$@" ; }

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