/[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 1.71 2007/07/11 04:06:29 robbat2 Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.85 2009/01/27 23:35:04 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-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
… …
122 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 161 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
123 162
124 case ${host} in 163 case ${host} in
125 alpha*) echo alpha;; 164 alpha*) echo alpha;;
126 arm*) echo arm;; 165 arm*) echo arm;;
166 avr*) ninj avr32 avr;;
127 bfin*) ninj blackfin bfin;; 167 bfin*) ninj blackfin bfin;;
128 cris*) echo cris;; 168 cris*) echo cris;;
129 hppa*) ninj parisc hppa;; 169 hppa*) ninj parisc hppa;;
130 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 ;;
131 ia64*) echo ia64;; 180 ia64*) echo ia64;;
132 m68*) echo m68k;; 181 m68*) echo m68k;;
133 mips*) echo mips;; 182 mips*) echo mips;;
134 nios2*) echo nios2;; 183 nios2*) echo nios2;;
135 nios*) echo nios;; 184 nios*) echo nios;;
… …
160 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 209 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
161 && ninj sparc64 sparc \ 210 && ninj sparc64 sparc \
162 || echo sparc 211 || echo sparc
163 ;; 212 ;;
164 vax*) echo vax;; 213 vax*) echo vax;;
165 x86_64*) ninj x86_64 amd64;; 214 x86_64*)
166 *) echo ${ARCH};; 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 ;;
223
224 # since our usage of tc-arch is largely concerned with
225 # normalizing inputs for testing ${CTARGET}, let's filter
226 # other cross targets (mingw and such) into the unknown.
227 *) echo unknown;;
167 esac 228 esac
168} 229}
230# @FUNCTION: tc-arch-kernel
231# @USAGE: [toolchain prefix]
232# @RETURN: name of the kernel arch according to the compiler target
169tc-arch-kernel() { 233tc-arch-kernel() {
170 tc-ninja_magic_to_arch kern $@ 234 tc-ninja_magic_to_arch kern "$@"
171} 235}
236# @FUNCTION: tc-arch
237# @USAGE: [toolchain prefix]
238# @RETURN: name of the portage arch according to the compiler target
172tc-arch() { 239tc-arch() {
173 tc-ninja_magic_to_arch portage $@ 240 tc-ninja_magic_to_arch portage "$@"
174} 241}
242
175tc-endian() { 243tc-endian() {
176 local host=$1 244 local host=$1
177 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 245 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
178 host=${host%%-*} 246 host=${host%%-*}
179 247
… …
196 x86_64*) echo little;; 264 x86_64*) echo little;;
197 *) echo wtf;; 265 *) echo wtf;;
198 esac 266 esac
199} 267}
200 268
201# Returns the version as by `$CC -dumpversion` 269# @FUNCTION: gcc-fullversion
270# @RETURN: compiler version (major.minor.micro: [3.4.6])
202gcc-fullversion() { 271gcc-fullversion() {
203 $(tc-getCC "$@") -dumpversion 272 $(tc-getCC "$@") -dumpversion
204} 273}
205# Returns the version, but only the <major>.<minor> 274# @FUNCTION: gcc-version
275# @RETURN: compiler version (major.minor: [3.4].6)
206gcc-version() { 276gcc-version() {
207 gcc-fullversion "$@" | cut -f1,2 -d. 277 gcc-fullversion "$@" | cut -f1,2 -d.
208} 278}
209# Returns the Major version 279# @FUNCTION: gcc-major-version
280# @RETURN: major compiler version (major: [3].4.6)
210gcc-major-version() { 281gcc-major-version() {
211 gcc-version "$@" | cut -f1 -d. 282 gcc-version "$@" | cut -f1 -d.
212} 283}
213# Returns the Minor version 284# @FUNCTION: gcc-minor-version
285# @RETURN: minor compiler version (minor: 3.[4].6)
214gcc-minor-version() { 286gcc-minor-version() {
215 gcc-version "$@" | cut -f2 -d. 287 gcc-version "$@" | cut -f2 -d.
216} 288}
217# Returns the Micro version 289# @FUNCTION: gcc-micro-version
290# @RETURN: micro compiler version (micro: 3.4.[6])
218gcc-micro-version() { 291gcc-micro-version() {
219 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- 292 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
220} 293}
294
221# Returns the installation directory - internal toolchain 295# Returns the installation directory - internal toolchain
222# function for use by _gcc-specs-exists (for flag-o-matic). 296# function for use by _gcc-specs-exists (for flag-o-matic).
223_gcc-install-dir() { 297_gcc-install-dir() {
224 echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\ 298 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
225 awk '$1=="install:" {print $2}')" 299 awk '$1=="install:" {print $2}')"
226} 300}
227# Returns true if the indicated specs file exists - internal toolchain 301# Returns true if the indicated specs file exists - internal toolchain
228# function for use by flag-o-matic. 302# function for use by flag-o-matic.
229_gcc-specs-exists() { 303_gcc-specs-exists() {
… …
273 347
274# Returns true if gcc sets relro 348# Returns true if gcc sets relro
275gcc-specs-relro() { 349gcc-specs-relro() {
276 local directive 350 local directive
277 directive=$(gcc-specs-directive link_command) 351 directive=$(gcc-specs-directive link_command)
278 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 352 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
279} 353}
280# Returns true if gcc sets now 354# Returns true if gcc sets now
281gcc-specs-now() { 355gcc-specs-now() {
282 local directive 356 local directive
283 directive=$(gcc-specs-directive link_command) 357 directive=$(gcc-specs-directive link_command)
284 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 358 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
285} 359}
286# Returns true if gcc builds PIEs 360# Returns true if gcc builds PIEs
287gcc-specs-pie() { 361gcc-specs-pie() {
288 local directive 362 local directive
289 directive=$(gcc-specs-directive cc1) 363 directive=$(gcc-specs-directive cc1)
290 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 364 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
291} 365}
292# Returns true if gcc builds with the stack protector 366# Returns true if gcc builds with the stack protector
293gcc-specs-ssp() { 367gcc-specs-ssp() {
294 local directive 368 local directive
295 directive=$(gcc-specs-directive cc1) 369 directive=$(gcc-specs-directive cc1)
296 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 370 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
297} 371}
298# Returns true if gcc upgrades fstack-protector to fstack-protector-all 372# Returns true if gcc upgrades fstack-protector to fstack-protector-all
299gcc-specs-ssp-to-all() { 373gcc-specs-ssp-to-all() {
300 local directive 374 local directive
301 directive=$(gcc-specs-directive cc1) 375 directive=$(gcc-specs-directive cc1)
302 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 376 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
303} 377}
378# Returns true if gcc builds with fno-strict-overflow
379gcc-specs-nostrict() {
380 local directive
381 directive=$(gcc-specs-directive cc1)
382 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
383}
304 384
305 385
386# @FUNCTION: gen_usr_ldscript
387# @USAGE: [-a] <list of libs to create linker scripts for>
388# @DESCRIPTION:
306# This function generate linker scripts in /usr/lib for dynamic 389# This function generate linker scripts in /usr/lib for dynamic
307# libs in /lib. This is to fix linking problems when you have 390# libs in /lib. This is to fix linking problems when you have
308# the .so in /lib, and the .a in /usr/lib. What happens is that 391# the .so in /lib, and the .a in /usr/lib. What happens is that
309# in some cases when linking dynamic, the .a in /usr/lib is used 392# in some cases when linking dynamic, the .a in /usr/lib is used
310# instead of the .so in /lib due to gcc/libtool tweaking ld's 393# instead of the .so in /lib due to gcc/libtool tweaking ld's
311# library search path. This cause many builds to fail. 394# library search path. This causes many builds to fail.
312# See bug #4411 for more info. 395# See bug #4411 for more info.
313# 396#
314# To use, simply call:
315#
316# gen_usr_ldscript libfoo.so
317#
318# Note that you should in general use the unversioned name of 397# Note that you should in general use the unversioned name of
319# the library, as ldconfig should usually update it correctly 398# the library (libfoo.so), as ldconfig should usually update it
320# to point to the latest version of the library present. 399# correctly to point to the latest version of the library present.
321gen_usr_ldscript() { 400gen_usr_ldscript() {
322 local lib libdir=$(get_libdir) output_format="" 401 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
323 # Just make sure it exists 402 # Just make sure it exists
324 dodir /usr/${libdir} 403 dodir /usr/${libdir}
404
405 if [[ $1 == "-a" ]] ; then
406 auto=true
407 shift
408 dodir /${libdir}
409 fi
325 410
326 # OUTPUT_FORMAT gives hints to the linker as to what binary format 411 # OUTPUT_FORMAT gives hints to the linker as to what binary format
327 # is referenced ... makes multilib saner 412 # is referenced ... makes multilib saner
328 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') 413 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
329 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" 414 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
… …
332 if [[ ${USERLAND} == "Darwin" ]] ; then 417 if [[ ${USERLAND} == "Darwin" ]] ; then
333 ewarn "Not creating fake dynamic library for $lib on Darwin;" 418 ewarn "Not creating fake dynamic library for $lib on Darwin;"
334 ewarn "making a symlink instead." 419 ewarn "making a symlink instead."
335 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}" 420 dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}"
336 else 421 else
422 local tlib
423 if ${auto} ; then
424 lib="lib${lib}${suffix}"
425 mv "${D}"/usr/${libdir}/${lib}* "${D}"/${libdir}/ || die
426 tlib=$(scanelf -qF'%S#F' "${D}"/${libdir}/${lib})
427 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
428 rm -f "${D}"/${libdir}/${lib}
429 else
430 tlib=${lib}
431 fi
337 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT 432 cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
338 /* GNU ld script 433 /* GNU ld script
339 Since Gentoo has critical dynamic libraries 434 Since Gentoo has critical dynamic libraries
340 in /lib, and the static versions in /usr/lib, 435 in /lib, and the static versions in /usr/lib,
341 we need to have a "fake" dynamic lib in /usr/lib, 436 we need to have a "fake" dynamic lib in /usr/lib,
342 otherwise we run into linking problems. 437 otherwise we run into linking problems.
343 438
344 See bug http://bugs.gentoo.org/4411 for more info. 439 See bug http://bugs.gentoo.org/4411 for more info.
345 */ 440 */
346 ${output_format} 441 ${output_format}
347 GROUP ( /${libdir}/${lib} ) 442 GROUP ( /${libdir}/${tlib} )
348 END_LDSCRIPT 443 END_LDSCRIPT
444 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
349 fi 445 fi
350 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
351 done 446 done
352} 447}
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