/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2015 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 1.14 2004/12/14 05:31:32 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.137 2015/04/13 05:38:17 vapier Exp $
4# 4
5# @ECLASS: toolchain-funcs.eclass
6# @MAINTAINER:
5# Author: Toolchain Ninjas <ninjas@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
16if [[ -z ${_TOOLCHAIN_FUNCS_ECLASS} ]]; then
17_TOOLCHAIN_FUNCS_ECLASS=1
18
10inherit eutils 19inherit multilib
11 20
12ECLASS=toolchain-funcs 21# tc-getPROG <VAR [search vars]> <default> [tuple]
13INHERITED="$INHERITED $ECLASS"
14
15DESCRIPTION="Based on the ${ECLASS} eclass"
16
17tc-getPROG() { 22_tc-getPROG() {
18 local var="$1" 23 local tuple=$1
24 local v var vars=$2
19 local prog="$2" 25 local prog=$3
20 local search=""
21 26
27 var=${vars%% *}
28 for v in ${vars} ; do
22 if [ -n "${!var}" ] ; then 29 if [[ -n ${!v} ]] ; then
30 export ${var}="${!v}"
23 echo "${!var}" 31 echo "${!v}"
24 return 0 32 return 0
25 fi 33 fi
34 done
26 35
27 if [ -n "${CTARGET}" ] ; then 36 local search=
28 search="$(type -p "${CTARGET}-${prog}")" 37 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
29 elif [ -n "${CHOST}" ] ; then 38 [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
30 search="$(type -p "${CHOST}-${prog}")" 39 [[ -n ${search} ]] && prog=${search##*/}
31 fi
32 40
33 if [ -n "${search}" ] ; then
34 prog="${search##*/}"
35 fi
36 export ${var}="${prog}" 41 export ${var}=${prog}
37 echo "${!var}" 42 echo "${!var}"
38} 43}
44tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
45tc-getPROG() { _tc-getPROG CHOST "$@"; }
39 46
40# Returns the name of the archiver 47# @FUNCTION: tc-getAR
48# @USAGE: [toolchain prefix]
49# @RETURN: name of the archiver
41tc-getAR() { tc-getPROG AR ar; } 50tc-getAR() { tc-getPROG AR ar "$@"; }
42# Returns the name of the assembler 51# @FUNCTION: tc-getAS
52# @USAGE: [toolchain prefix]
53# @RETURN: name of the assembler
43tc-getAS() { tc-getPROG AS as; } 54tc-getAS() { tc-getPROG AS as "$@"; }
55# @FUNCTION: tc-getCC
56# @USAGE: [toolchain prefix]
44# Returns the name of the C compiler 57# @RETURN: name of the C compiler
45tc-getCC() { tc-getPROG CC gcc; } 58tc-getCC() { tc-getPROG CC gcc "$@"; }
59# @FUNCTION: tc-getCPP
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the C preprocessor
62tc-getCPP() { tc-getPROG CPP cpp "$@"; }
63# @FUNCTION: tc-getCXX
64# @USAGE: [toolchain prefix]
46# Returns the name of the C++ compiler 65# @RETURN: name of the C++ compiler
47tc-getCXX() { tc-getPROG CXX g++; } 66tc-getCXX() { tc-getPROG CXX g++ "$@"; }
48# Returns the name of the linker 67# @FUNCTION: tc-getLD
68# @USAGE: [toolchain prefix]
69# @RETURN: name of the linker
49tc-getLD() { tc-getPROG LD ld; } 70tc-getLD() { tc-getPROG LD ld "$@"; }
71# @FUNCTION: tc-getSTRIP
72# @USAGE: [toolchain prefix]
73# @RETURN: name of the strip program
74tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
75# @FUNCTION: tc-getNM
76# @USAGE: [toolchain prefix]
50# Returns the name of the symbol/object thingy 77# @RETURN: name of the symbol/object thingy
51tc-getNM() { tc-getPROG NM nm; } 78tc-getNM() { tc-getPROG NM nm "$@"; }
79# @FUNCTION: tc-getRANLIB
80# @USAGE: [toolchain prefix]
52# Returns the name of the archiver indexer 81# @RETURN: name of the archiver indexer
53tc-getRANLIB() { tc-getPROG RANLIB ranlib; } 82tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
54# Returns the name of the fortran compiler 83# @FUNCTION: tc-getOBJCOPY
84# @USAGE: [toolchain prefix]
85# @RETURN: name of the object copier
86tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
87# @FUNCTION: tc-getOBJDUMP
88# @USAGE: [toolchain prefix]
89# @RETURN: name of the object dumper
90tc-getOBJDUMP() { tc-getPROG OBJDUMP objdump "$@"; }
91# @FUNCTION: tc-getF77
92# @USAGE: [toolchain prefix]
93# @RETURN: name of the Fortran 77 compiler
55tc-getF77() { tc-getPROG F77 f77; } 94tc-getF77() { tc-getPROG F77 gfortran "$@"; }
95# @FUNCTION: tc-getFC
96# @USAGE: [toolchain prefix]
97# @RETURN: name of the Fortran 90 compiler
98tc-getFC() { tc-getPROG FC gfortran "$@"; }
99# @FUNCTION: tc-getGCJ
100# @USAGE: [toolchain prefix]
56# Returns the name of the java compiler 101# @RETURN: name of the java compiler
57tc-getGCJ() { tc-getPROG GCJ gcj; } 102tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
103# @FUNCTION: tc-getPKG_CONFIG
104# @USAGE: [toolchain prefix]
105# @RETURN: name of the pkg-config tool
106tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
107# @FUNCTION: tc-getRC
108# @USAGE: [toolchain prefix]
109# @RETURN: name of the Windows resource compiler
110tc-getRC() { tc-getPROG RC windres "$@"; }
111# @FUNCTION: tc-getDLLWRAP
112# @USAGE: [toolchain prefix]
113# @RETURN: name of the Windows dllwrap utility
114tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
58 115
59# Returns the name of the C compiler for build 116# @FUNCTION: tc-getBUILD_AR
60tc-getBUILD_CC() { 117# @USAGE: [toolchain prefix]
61 if [ -n "${CC_FOR_BUILD}" ] ; then 118# @RETURN: name of the archiver for building binaries to run on the build machine
62 export BUILD_CC="${CC_FOR_BUILD}" 119tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
63 echo "${CC_FOR_BUILD}" 120# @FUNCTION: tc-getBUILD_AS
64 return 0 121# @USAGE: [toolchain prefix]
65 fi 122# @RETURN: name of the assembler for building binaries to run on the build machine
123tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
124# @FUNCTION: tc-getBUILD_CC
125# @USAGE: [toolchain prefix]
126# @RETURN: name of the C compiler for building binaries to run on the build machine
127tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
128# @FUNCTION: tc-getBUILD_CPP
129# @USAGE: [toolchain prefix]
130# @RETURN: name of the C preprocessor for building binaries to run on the build machine
131tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; }
132# @FUNCTION: tc-getBUILD_CXX
133# @USAGE: [toolchain prefix]
134# @RETURN: name of the C++ compiler for building binaries to run on the build machine
135tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
136# @FUNCTION: tc-getBUILD_LD
137# @USAGE: [toolchain prefix]
138# @RETURN: name of the linker for building binaries to run on the build machine
139tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
140# @FUNCTION: tc-getBUILD_STRIP
141# @USAGE: [toolchain prefix]
142# @RETURN: name of the strip program for building binaries to run on the build machine
143tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
144# @FUNCTION: tc-getBUILD_NM
145# @USAGE: [toolchain prefix]
146# @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
147tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
148# @FUNCTION: tc-getBUILD_RANLIB
149# @USAGE: [toolchain prefix]
150# @RETURN: name of the archiver indexer for building binaries to run on the build machine
151tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
152# @FUNCTION: tc-getBUILD_OBJCOPY
153# @USAGE: [toolchain prefix]
154# @RETURN: name of the object copier for building binaries to run on the build machine
155tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
156# @FUNCTION: tc-getBUILD_PKG_CONFIG
157# @USAGE: [toolchain prefix]
158# @RETURN: name of the pkg-config tool for building binaries to run on the build machine
159tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
66 160
67 local search= 161# @FUNCTION: tc-export
68 if [ -n "${CBUILD}" ] ; then 162# @USAGE: <list of toolchain variables>
69 search="$(type -p "${CBUILD}-gcc")" 163# @DESCRIPTION:
70 fi
71
72 if [ -n "${search}" ] ; then
73 search="${search##*/}"
74 else
75 search="gcc"
76 fi
77
78 export BUILD_CC="${search}"
79 echo "${search}"
80}
81
82# Quick way to export a bunch of vars at once 164# Quick way to export a bunch of compiler vars at once.
83tc-export() { 165tc-export() {
84 local var 166 local var
85 for var in "$@" ; do 167 for var in "$@" ; do
168 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
86 eval tc-get${var} 169 eval tc-get${var} > /dev/null
87 done 170 done
88} 171}
89 172
90# A simple way to see if we're using a cross-compiler ... 173# @FUNCTION: tc-is-cross-compiler
174# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
91tc-is-cross-compiler() { 175tc-is-cross-compiler() {
92 local ret tmpfile=$(emktemp).c 176 [[ ${CBUILD:-${CHOST}} != ${CHOST} ]]
93 echo 'int main(){return 0;}' > "${tmpfile}" 177}
94 $(tc-getCC) "${tmpfile}" -o "${tmpfile}".bin 178
95 ! "${tmpfile}".bin &>/dev/null 179# @FUNCTION: tc-is-softfloat
96 ret=$? 180# @DESCRIPTION:
97 rm -f "${tmpfile}" "${tmpfile}".bin 181# See if this toolchain is a softfloat based one.
182# @CODE
183# The possible return values:
184# - only: the target is always softfloat (never had fpu)
185# - yes: the target should support softfloat
186# - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
187# - no: the target doesn't support softfloat
188# @CODE
189# This allows us to react differently where packages accept
190# softfloat flags in the case where support is optional, but
191# rejects softfloat flags where the target always lacks an fpu.
192tc-is-softfloat() {
193 local CTARGET=${CTARGET:-${CHOST}}
194 case ${CTARGET} in
195 bfin*|h8300*)
196 echo "only" ;;
197 *)
198 if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then
199 echo "yes"
200 elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
201 echo "softfp"
202 else
203 echo "no"
204 fi
205 ;;
206 esac
207}
208
209# @FUNCTION: tc-is-static-only
210# @DESCRIPTION:
211# Return shell true if the target does not support shared libs, shell false
212# otherwise.
213tc-is-static-only() {
214 local host=${CTARGET:-${CHOST}}
215
216 # *MiNT doesn't have shared libraries, only platform so far
217 [[ ${host} == *-mint* ]]
218}
219
220# @FUNCTION: tc-export_build_env
221# @USAGE: [compiler variables]
222# @DESCRIPTION:
223# Export common build related compiler settings.
224tc-export_build_env() {
225 tc-export "$@"
226 # Some build envs will initialize vars like:
227 # : ${BUILD_LDFLAGS:-${LDFLAGS}}
228 # So make sure all variables are non-empty. #526734
229 : ${BUILD_CFLAGS:=-O1 -pipe}
230 : ${BUILD_CXXFLAGS:=-O1 -pipe}
231 : ${BUILD_CPPFLAGS:= }
232 : ${BUILD_LDFLAGS:= }
233 export BUILD_{C,CXX,CPP,LD}FLAGS
234
235 # Some packages use XXX_FOR_BUILD.
236 local v
237 for v in BUILD_{C,CXX,CPP,LD}FLAGS ; do
238 export ${v#BUILD_}_FOR_BUILD="${!v}"
239 done
240}
241
242# @FUNCTION: tc-env_build
243# @USAGE: <command> [command args]
244# @INTERNAL
245# @DESCRIPTION:
246# Setup the compile environment to the build tools and then execute the
247# specified command. We use tc-getBUILD_XX here so that we work with
248# all of the semi-[non-]standard env vars like $BUILD_CC which often
249# the target build system does not check.
250tc-env_build() {
251 tc-export_build_env
252 CFLAGS=${BUILD_CFLAGS} \
253 CXXFLAGS=${BUILD_CXXFLAGS} \
254 CPPFLAGS=${BUILD_CPPFLAGS} \
255 LDFLAGS=${BUILD_LDFLAGS} \
256 AR=$(tc-getBUILD_AR) \
257 AS=$(tc-getBUILD_AS) \
258 CC=$(tc-getBUILD_CC) \
259 CPP=$(tc-getBUILD_CPP) \
260 CXX=$(tc-getBUILD_CXX) \
261 LD=$(tc-getBUILD_LD) \
262 NM=$(tc-getBUILD_NM) \
263 PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
264 RANLIB=$(tc-getBUILD_RANLIB) \
265 "$@"
266}
267
268# @FUNCTION: econf_build
269# @USAGE: [econf flags]
270# @DESCRIPTION:
271# Sometimes we need to locally build up some tools to run on CBUILD because
272# the package has helper utils which are compiled+executed when compiling.
273# This won't work when cross-compiling as the CHOST is set to a target which
274# we cannot natively execute.
275#
276# For example, the python package will build up a local python binary using
277# a portable build system (configure+make), but then use that binary to run
278# local python scripts to build up other components of the overall python.
279# We cannot rely on the python binary in $PATH as that often times will be
280# a different version, or not even installed in the first place. Instead,
281# we compile the code in a different directory to run on CBUILD, and then
282# use that binary when compiling the main package to run on CHOST.
283#
284# For example, with newer EAPIs, you'd do something like:
285# @CODE
286# src_configure() {
287# ECONF_SOURCE=${S}
288# if tc-is-cross-compiler ; then
289# mkdir "${WORKDIR}"/${CBUILD}
290# pushd "${WORKDIR}"/${CBUILD} >/dev/null
291# econf_build --disable-some-unused-stuff
292# popd >/dev/null
293# fi
294# ... normal build paths ...
295# }
296# src_compile() {
297# if tc-is-cross-compiler ; then
298# pushd "${WORKDIR}"/${CBUILD} >/dev/null
299# emake one-or-two-build-tools
300# ln/mv build-tools to normal build paths in ${S}/
301# popd >/dev/null
302# fi
303# ... normal build paths ...
304# }
305# @CODE
306econf_build() {
307 local CBUILD=${CBUILD:-${CHOST}}
308 tc-env_build econf --build=${CBUILD} --host=${CBUILD} "$@"
309}
310
311# @FUNCTION: tc-ld-is-gold
312# @USAGE: [toolchain prefix]
313# @DESCRIPTION:
314# Return true if the current linker is set to gold.
315tc-ld-is-gold() {
316 local out
317
318 # First check the linker directly.
319 out=$($(tc-getLD "$@") --version 2>&1)
320 if [[ ${out} == *"GNU gold"* ]] ; then
321 return 0
322 fi
323
324 # Then see if they're selecting gold via compiler flags.
325 # Note: We're assuming they're using LDFLAGS to hold the
326 # options and not CFLAGS/CXXFLAGS.
327 local base="${T}/test-tc-gold"
328 cat <<-EOF > "${base}.c"
329 int main() { return 0; }
330 EOF
331 out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version "${base}.c" -o "${base}" 2>&1)
332 rm -f "${base}"*
333 if [[ ${out} == *"GNU gold"* ]] ; then
334 return 0
335 fi
336
337 # No gold here!
338 return 1
339}
340
341# @FUNCTION: tc-ld-disable-gold
342# @USAGE: [toolchain prefix]
343# @DESCRIPTION:
344# If the gold linker is currently selected, configure the compilation
345# settings so that we use the older bfd linker instead.
346tc-ld-disable-gold() {
347 if ! tc-ld-is-gold "$@" ; then
348 # They aren't using gold, so nothing to do!
349 return
350 fi
351
352 ewarn "Forcing usage of the BFD linker instead of GOLD"
353
354 # Set up LD to point directly to bfd if it's available.
355 # We need to extract the first word in case there are flags appended
356 # to its value (like multilib). #545218
357 local ld=$(tc-getLD "$@")
358 local bfd_ld="${ld%% *}.bfd"
359 local path_ld=$(which "${bfd_ld}" 2>/dev/null)
360 [[ -e ${path_ld} ]] && export LD=${bfd_ld}
361
362 # Set up LDFLAGS to select gold based on the gcc version.
363 local major=$(gcc-major-version "$@")
364 local minor=$(gcc-minor-version "$@")
365 if [[ ${major} -lt 4 ]] || [[ ${major} -eq 4 && ${minor} -lt 8 ]] ; then
366 # <=gcc-4.7 requires some coercion. Only works if bfd exists.
367 if [[ -e ${path_ld} ]] ; then
368 local d="${T}/bfd-linker"
369 mkdir -p "${d}"
370 ln -sf "${path_ld}" "${d}"/ld
371 export LDFLAGS="${LDFLAGS} -B${d}"
372 else
373 die "unable to locate a BFD linker to bypass gold"
374 fi
375 else
376 # gcc-4.8+ supports -fuse-ld directly.
377 export LDFLAGS="${LDFLAGS} -fuse-ld=bfd"
378 fi
379}
380
381# @FUNCTION: tc-has-openmp
382# @USAGE: [toolchain prefix]
383# @DESCRIPTION:
384# See if the toolchain supports OpenMP.
385tc-has-openmp() {
386 local base="${T}/test-tc-openmp"
387 cat <<-EOF > "${base}.c"
388 #include <omp.h>
389 int main() {
390 int nthreads, tid, ret = 0;
391 #pragma omp parallel private(nthreads, tid)
392 {
393 tid = omp_get_thread_num();
394 nthreads = omp_get_num_threads(); ret += tid + nthreads;
395 }
396 return ret;
397 }
398 EOF
399 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
400 local ret=$?
401 rm -f "${base}"*
98 return ${ret} 402 return ${ret}
99} 403}
100 404
405# @FUNCTION: tc-has-tls
406# @USAGE: [-s|-c|-l] [toolchain prefix]
407# @DESCRIPTION:
408# See if the toolchain supports thread local storage (TLS). Use -s to test the
409# compiler, -c to also test the assembler, and -l to also test the C library
410# (the default).
411tc-has-tls() {
412 local base="${T}/test-tc-tls"
413 cat <<-EOF > "${base}.c"
414 int foo(int *i) {
415 static __thread int j = 0;
416 return *i ? j : *i;
417 }
418 EOF
419 local flags
420 case $1 in
421 -s) flags="-S";;
422 -c) flags="-c";;
423 -l) ;;
424 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
425 esac
426 : ${flags:=-fPIC -shared -Wl,-z,defs}
427 [[ $1 == -* ]] && shift
428 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
429 local ret=$?
430 rm -f "${base}"*
431 return ${ret}
432}
101 433
102# Returns the version as by `$CC -dumpversion` 434
435# Parse information from CBUILD/CHOST/CTARGET rather than
436# use external variables from the profile.
437tc-ninja_magic_to_arch() {
438ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
439
440 local type=$1
441 local host=$2
442 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
443
444 local KV=${KV:-${KV_FULL}}
445 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
446 ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
447
448 case ${host} in
449 aarch64*) echo arm64;;
450 alpha*) echo alpha;;
451 arm*) echo arm;;
452 avr*) ninj avr32 avr;;
453 bfin*) ninj blackfin bfin;;
454 c6x*) echo c6x;;
455 cris*) echo cris;;
456 frv*) echo frv;;
457 hexagon*) echo hexagon;;
458 hppa*) ninj parisc hppa;;
459 i?86*)
460 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
461 # trees have been unified into 'x86'.
462 # FreeBSD still uses i386
463 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
464 echo i386
465 else
466 echo x86
467 fi
468 ;;
469 ia64*) echo ia64;;
470 m68*) echo m68k;;
471 metag*) echo metag;;
472 microblaze*) echo microblaze;;
473 mips*) echo mips;;
474 nios2*) echo nios2;;
475 nios*) echo nios;;
476 or32*) echo openrisc;;
477 powerpc*)
478 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
479 # have been unified into simply 'powerpc', but until 2.6.16,
480 # ppc32 is still using ARCH="ppc" as default
481 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
482 echo powerpc
483 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
484 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
485 echo powerpc
486 else
487 echo ppc
488 fi
489 elif [[ ${host} == powerpc64* ]] ; then
490 echo ppc64
491 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
492 ninj ppc64 ppc
493 else
494 echo ppc
495 fi
496 ;;
497 riscv*) echo riscv;;
498 s390*) echo s390;;
499 score*) echo score;;
500 sh64*) ninj sh64 sh;;
501 sh*) echo sh;;
502 sparc64*) ninj sparc64 sparc;;
503 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
504 && ninj sparc64 sparc \
505 || echo sparc
506 ;;
507 tile*) echo tile;;
508 vax*) echo vax;;
509 x86_64*freebsd*) echo amd64;;
510 x86_64*)
511 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
512 # trees have been unified into 'x86'.
513 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
514 echo x86
515 else
516 ninj x86_64 amd64
517 fi
518 ;;
519 xtensa*) echo xtensa;;
520
521 # since our usage of tc-arch is largely concerned with
522 # normalizing inputs for testing ${CTARGET}, let's filter
523 # other cross targets (mingw and such) into the unknown.
524 *) echo unknown;;
525 esac
526}
527# @FUNCTION: tc-arch-kernel
528# @USAGE: [toolchain prefix]
529# @RETURN: name of the kernel arch according to the compiler target
530tc-arch-kernel() {
531 tc-ninja_magic_to_arch kern "$@"
532}
533# @FUNCTION: tc-arch
534# @USAGE: [toolchain prefix]
535# @RETURN: name of the portage arch according to the compiler target
536tc-arch() {
537 tc-ninja_magic_to_arch portage "$@"
538}
539
540tc-endian() {
541 local host=$1
542 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
543 host=${host%%-*}
544
545 case ${host} in
546 aarch64*be) echo big;;
547 aarch64) echo little;;
548 alpha*) echo big;;
549 arm*b*) echo big;;
550 arm*) echo little;;
551 cris*) echo little;;
552 hppa*) echo big;;
553 i?86*) echo little;;
554 ia64*) echo little;;
555 m68*) echo big;;
556 mips*l*) echo little;;
557 mips*) echo big;;
558 powerpc*le) echo little;;
559 powerpc*) echo big;;
560 s390*) echo big;;
561 sh*b*) echo big;;
562 sh*) echo little;;
563 sparc*) echo big;;
564 x86_64*) echo little;;
565 *) echo wtf;;
566 esac
567}
568
569# Internal func. The first argument is the version info to expand.
570# Query the preprocessor to improve compatibility across different
571# compilers rather than maintaining a --version flag matrix. #335943
572_gcc_fullversion() {
573 local ver="$1"; shift
574 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
575 eval echo "$ver"
576}
577
578# @FUNCTION: gcc-fullversion
579# @RETURN: compiler version (major.minor.micro: [3.4.6])
103gcc-fullversion() { 580gcc-fullversion() {
104 echo "$($(tc-getCC) -dumpversion)" 581 _gcc_fullversion '$1.$2.$3' "$@"
105} 582}
106# Returns the version, but only the <major>.<minor> 583# @FUNCTION: gcc-version
584# @RETURN: compiler version (major.minor: [3.4].6)
107gcc-version() { 585gcc-version() {
108 echo "$(gcc-fullversion | cut -f1,2 -d.)" 586 _gcc_fullversion '$1.$2' "$@"
109} 587}
110# Returns the Major version 588# @FUNCTION: gcc-major-version
589# @RETURN: major compiler version (major: [3].4.6)
111gcc-major-version() { 590gcc-major-version() {
112 echo "$(gcc-version | cut -f1 -d.)" 591 _gcc_fullversion '$1' "$@"
113} 592}
114# Returns the Minor version 593# @FUNCTION: gcc-minor-version
594# @RETURN: minor compiler version (minor: 3.[4].6)
115gcc-minor-version() { 595gcc-minor-version() {
116 echo "$(gcc-version | cut -f2 -d.)" 596 _gcc_fullversion '$2' "$@"
117} 597}
118# Returns the Micro version 598# @FUNCTION: gcc-micro-version
599# @RETURN: micro compiler version (micro: 3.4.[6])
119gcc-micro-version() { 600gcc-micro-version() {
120 echo "$(gcc-fullversion | cut -f3 -d.)" 601 _gcc_fullversion '$3' "$@"
121} 602}
603
604# Returns the installation directory - internal toolchain
605# function for use by _gcc-specs-exists (for flag-o-matic).
606_gcc-install-dir() {
607 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
608 awk '$1=="install:" {print $2}')"
609}
610# Returns true if the indicated specs file exists - internal toolchain
611# function for use by flag-o-matic.
612_gcc-specs-exists() {
613 [[ -f $(_gcc-install-dir)/$1 ]]
614}
615
616# Returns requested gcc specs directive unprocessed - for used by
617# gcc-specs-directive()
618# Note; later specs normally overwrite earlier ones; however if a later
619# spec starts with '+' then it appends.
620# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
621# as "Reading <file>", in order. Strictly speaking, if there's a
622# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
623# the same token anything from 'gcc -dumpspecs' is overridden by
624# the contents of $(gcc_install_dir)/specs so the result is the
625# same either way.
626_gcc-specs-directive_raw() {
627 local cc=$(tc-getCC)
628 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
629 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
630'BEGIN { pspec=""; spec=""; outside=1 }
631$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
632 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
633 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
634 { spec=spec $0 }
635END { print spec }'
636 return 0
637}
638
639# Return the requested gcc specs directive, with all included
640# specs expanded.
641# Note, it does not check for inclusion loops, which cause it
642# to never finish - but such loops are invalid for gcc and we're
643# assuming gcc is operational.
644gcc-specs-directive() {
645 local directive subdname subdirective
646 directive="$(_gcc-specs-directive_raw $1)"
647 while [[ ${directive} == *%\(*\)* ]]; do
648 subdname=${directive/*%\(}
649 subdname=${subdname/\)*}
650 subdirective="$(_gcc-specs-directive_raw ${subdname})"
651 directive="${directive//\%(${subdname})/${subdirective}}"
652 done
653 echo "${directive}"
654 return 0
655}
656
657# Returns true if gcc sets relro
658gcc-specs-relro() {
659 local directive
660 directive=$(gcc-specs-directive link_command)
661 [[ "${directive/\{!norelro:}" != "${directive}" ]]
662}
663# Returns true if gcc sets now
664gcc-specs-now() {
665 local directive
666 directive=$(gcc-specs-directive link_command)
667 [[ "${directive/\{!nonow:}" != "${directive}" ]]
668}
669# Returns true if gcc builds PIEs
670gcc-specs-pie() {
671 local directive
672 directive=$(gcc-specs-directive cc1)
673 [[ "${directive/\{!nopie:}" != "${directive}" ]]
674}
675# Returns true if gcc builds with the stack protector
676gcc-specs-ssp() {
677 local directive
678 directive=$(gcc-specs-directive cc1)
679 [[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
680}
681# Returns true if gcc upgrades fstack-protector to fstack-protector-all
682gcc-specs-ssp-to-all() {
683 local directive
684 directive=$(gcc-specs-directive cc1)
685 [[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
686}
687# Returns true if gcc builds with fno-strict-overflow
688gcc-specs-nostrict() {
689 local directive
690 directive=$(gcc-specs-directive cc1)
691 [[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
692}
693# Returns true if gcc builds with fstack-check
694gcc-specs-stack-check() {
695 local directive
696 directive=$(gcc-specs-directive cc1)
697 [[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
698}
699
700
701# @FUNCTION: gen_usr_ldscript
702# @USAGE: [-a] <list of libs to create linker scripts for>
703# @DESCRIPTION:
704# This function generate linker scripts in /usr/lib for dynamic
705# libs in /lib. This is to fix linking problems when you have
706# the .so in /lib, and the .a in /usr/lib. What happens is that
707# in some cases when linking dynamic, the .a in /usr/lib is used
708# instead of the .so in /lib due to gcc/libtool tweaking ld's
709# library search path. This causes many builds to fail.
710# See bug #4411 for more info.
711#
712# Note that you should in general use the unversioned name of
713# the library (libfoo.so), as ldconfig should usually update it
714# correctly to point to the latest version of the library present.
715gen_usr_ldscript() {
716 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
717 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
718
719 tc-is-static-only && return
720
721 # Eventually we'd like to get rid of this func completely #417451
722 case ${CTARGET:-${CHOST}} in
723 *-darwin*) ;;
724 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
725 use prefix && return 0 ;;
726 *) return 0 ;;
727 esac
728
729 # Just make sure it exists
730 dodir /usr/${libdir}
731
732 if [[ $1 == "-a" ]] ; then
733 auto=true
734 shift
735 dodir /${libdir}
736 fi
737
738 # OUTPUT_FORMAT gives hints to the linker as to what binary format
739 # is referenced ... makes multilib saner
740 local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
741 if $(tc-getLD) --version | grep -q 'GNU gold' ; then
742 # If they're using gold, manually invoke the old bfd. #487696
743 local d="${T}/bfd-linker"
744 mkdir -p "${d}"
745 ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
746 flags+=( -B"${d}" )
747 fi
748 output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
749 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
750
751 for lib in "$@" ; do
752 local tlib
753 if ${auto} ; then
754 lib="lib${lib}${suffix}"
755 else
756 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
757 # This especially is for AIX where $(get_libname) can return ".a",
758 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
759 [[ -r ${ED}/${libdir}/${lib} ]] || continue
760 #TODO: better die here?
761 fi
762
763 case ${CTARGET:-${CHOST}} in
764 *-darwin*)
765 if ${auto} ; then
766 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
767 else
768 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
769 fi
770 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
771 tlib=${tlib##*/}
772
773 if ${auto} ; then
774 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
775 # some install_names are funky: they encode a version
776 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
777 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
778 fi
779 rm -f "${ED}"/${libdir}/${lib}
780 fi
781
782 # Mach-O files have an id, which is like a soname, it tells how
783 # another object linking against this lib should reference it.
784 # Since we moved the lib from usr/lib into lib this reference is
785 # wrong. Hence, we update it here. We don't configure with
786 # libdir=/lib because that messes up libtool files.
787 # Make sure we don't lose the specific version, so just modify the
788 # existing install_name
789 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
790 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
791 local nowrite=yes
792 fi
793 install_name_tool \
794 -id "${EPREFIX}"/${libdir}/${tlib} \
795 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
796 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
797 # Now as we don't use GNU binutils and our linker doesn't
798 # understand linker scripts, just create a symlink.
799 pushd "${ED}/usr/${libdir}" > /dev/null
800 ln -snf "../../${libdir}/${tlib}" "${lib}"
801 popd > /dev/null
802 ;;
803 *)
804 if ${auto} ; then
805 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
806 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
807 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
808 # some SONAMEs are funky: they encode a version before the .so
809 if [[ ${tlib} != ${lib}* ]] ; then
810 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
811 fi
812 rm -f "${ED}"/${libdir}/${lib}
813 else
814 tlib=${lib}
815 fi
816 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
817 /* GNU ld script
818 Since Gentoo has critical dynamic libraries in /lib, and the static versions
819 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
820 run into linking problems. This "fake" dynamic lib is a linker script that
821 redirects the linker to the real lib. And yes, this works in the cross-
822 compiling scenario as the sysroot-ed linker will prepend the real path.
823
824 See bug http://bugs.gentoo.org/4411 for more info.
825 */
826 ${output_format}
827 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
828 END_LDSCRIPT
829 ;;
830 esac
831 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
832 done
833}
834
835fi

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