/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2005 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 1.42 2005/08/02 13:26:59 azarah Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.135 2015/03/16 21:12:27 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.
15
16if [[ -z ${_TOOLCHAIN_FUNCS_ECLASS} ]]; then
17_TOOLCHAIN_FUNCS_ECLASS=1
9 18
10inherit multilib 19inherit multilib
11 20
12 21# tc-getPROG <VAR [search vars]> <default> [tuple]
13DESCRIPTION="Based on the ${ECLASS} eclass"
14
15tc-getPROG() { 22_tc-getPROG() {
16 local var=$1 23 local tuple=$1
24 local v var vars=$2
17 local prog=$2 25 local prog=$3
18 26
27 var=${vars%% *}
28 for v in ${vars} ; do
19 if [[ -n ${!var} ]] ; then 29 if [[ -n ${!v} ]] ; then
30 export ${var}="${!v}"
20 echo "${!var}" 31 echo "${!v}"
21 return 0 32 return 0
22 fi 33 fi
34 done
23 35
24 local search= 36 local search=
25 [[ -n $3 ]] && search=$(type -p "$3-${prog}") 37 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
26 [[ -z ${search} && -n $(get_abi_CHOST) ]] && search=$(type -p "$(get_abi_CHOST)-${prog}")
27 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}") 38 [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
28 [[ -n ${search} ]] && prog=${search##*/} 39 [[ -n ${search} ]] && prog=${search##*/}
29 40
30 export ${var}=${prog} 41 export ${var}=${prog}
31 echo "${!var}" 42 echo "${!var}"
32} 43}
44tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
45tc-getPROG() { _tc-getPROG CHOST "$@"; }
33 46
34# Returns the name of the archiver 47# @FUNCTION: tc-getAR
48# @USAGE: [toolchain prefix]
49# @RETURN: name of the archiver
35tc-getAR() { tc-getPROG AR ar "$@"; } 50tc-getAR() { tc-getPROG AR ar "$@"; }
36# Returns the name of the assembler 51# @FUNCTION: tc-getAS
52# @USAGE: [toolchain prefix]
53# @RETURN: name of the assembler
37tc-getAS() { tc-getPROG AS as "$@"; } 54tc-getAS() { tc-getPROG AS as "$@"; }
55# @FUNCTION: tc-getCC
56# @USAGE: [toolchain prefix]
38# Returns the name of the C compiler 57# @RETURN: name of the C compiler
39tc-getCC() { tc-getPROG CC gcc "$@"; } 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]
40# Returns the name of the C++ compiler 65# @RETURN: name of the C++ compiler
41tc-getCXX() { tc-getPROG CXX g++ "$@"; } 66tc-getCXX() { tc-getPROG CXX g++ "$@"; }
42# Returns the name of the linker 67# @FUNCTION: tc-getLD
68# @USAGE: [toolchain prefix]
69# @RETURN: name of the linker
43tc-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 "$@"; }
75# @FUNCTION: tc-getNM
76# @USAGE: [toolchain prefix]
44# Returns the name of the symbol/object thingy 77# @RETURN: name of the symbol/object thingy
45tc-getNM() { tc-getPROG NM nm "$@"; } 78tc-getNM() { tc-getPROG NM nm "$@"; }
79# @FUNCTION: tc-getRANLIB
80# @USAGE: [toolchain prefix]
46# Returns the name of the archiver indexer 81# @RETURN: name of the archiver indexer
47tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } 82tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
48# Returns the name of the fortran compiler 83# @FUNCTION: tc-getOBJCOPY
84# @USAGE: [toolchain prefix]
85# @RETURN: name of the object copier
86tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
87# @FUNCTION: tc-getOBJDUMP
88# @USAGE: [toolchain prefix]
89# @RETURN: name of the object dumper
90tc-getOBJDUMP() { tc-getPROG OBJDUMP objdump "$@"; }
91# @FUNCTION: tc-getF77
92# @USAGE: [toolchain prefix]
93# @RETURN: name of the Fortran 77 compiler
49tc-getF77() { tc-getPROG F77 f77 "$@"; } 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]
50# Returns the name of the java compiler 101# @RETURN: name of the java compiler
51tc-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 "$@"; }
52 115
53# Returns the name of the C compiler for build 116# @FUNCTION: tc-getBUILD_AR
54tc-getBUILD_CC() { 117# @USAGE: [toolchain prefix]
55 if [[ -n ${CC_FOR_BUILD} ]] ; then 118# @RETURN: name of the archiver for building binaries to run on the build machine
56 export BUILD_CC=${CC_FOR_BUILD} 119tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
57 echo "${CC_FOR_BUILD}" 120# @FUNCTION: tc-getBUILD_AS
58 return 0 121# @USAGE: [toolchain prefix]
59 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 "$@"; }
156# @FUNCTION: tc-getBUILD_PKG_CONFIG
157# @USAGE: [toolchain prefix]
158# @RETURN: name of the pkg-config tool for building binaries to run on the build machine
159tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
60 160
61 local search= 161# @FUNCTION: tc-export
62 if [[ -n ${CBUILD} ]] ; then 162# @USAGE: <list of toolchain variables>
63 search=$(type -p ${CBUILD}-gcc) 163# @DESCRIPTION:
64 search=${search##*/}
65 else
66 search=gcc
67 fi
68
69 export BUILD_CC=${search}
70 echo "${search}"
71}
72
73# Quick way to export a bunch of vars at once 164# Quick way to export a bunch of compiler vars at once.
74tc-export() { 165tc-export() {
75 local var 166 local var
76 for var in "$@" ; do 167 for var in "$@" ; do
168 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
77 eval tc-get${var} > /dev/null 169 eval tc-get${var} > /dev/null
78 done 170 done
79} 171}
80 172
81# 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
82tc-is-cross-compiler() { 175tc-is-cross-compiler() {
83 if [[ -n ${CBUILD} ]] ; then 176 [[ ${CBUILD:-${CHOST}} != ${CHOST} ]]
84 return $([[ ${CBUILD} != ${CHOST} ]]) 177}
178
179# @FUNCTION: tc-is-softfloat
180# @DESCRIPTION:
181# See if this toolchain is a softfloat based one.
182# @CODE
183# The possible return values:
184# - only: the target is always softfloat (never had fpu)
185# - yes: the target should support softfloat
186# - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
187# - no: the target doesn't support softfloat
188# @CODE
189# This allows us to react differently where packages accept
190# softfloat flags in the case where support is optional, but
191# rejects softfloat flags where the target always lacks an fpu.
192tc-is-softfloat() {
193 local CTARGET=${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 : ${BUILD_CFLAGS:=-O1 -pipe}
227 : ${BUILD_CXXFLAGS:=-O1 -pipe}
228 : ${BUILD_CPPFLAGS:=}
229 : ${BUILD_LDFLAGS:=}
230 export BUILD_{C,CXX,CPP,LD}FLAGS
231
232 # Some packages use XXX_FOR_BUILD.
233 local v
234 for v in BUILD_{C,CXX,CPP,LD}FLAGS ; do
235 export ${v#BUILD_}_FOR_BUILD="${!v}"
236 done
237}
238
239# @FUNCTION: tc-env_build
240# @USAGE: <command> [command args]
241# @INTERNAL
242# @DESCRIPTION:
243# Setup the compile environment to the build tools and then execute the
244# specified command. We use tc-getBUILD_XX here so that we work with
245# all of the semi-[non-]standard env vars like $BUILD_CC which often
246# the target build system does not check.
247tc-env_build() {
248 tc-export_build_env
249 CFLAGS=${BUILD_CFLAGS} \
250 CXXFLAGS=${BUILD_CXXFLAGS} \
251 CPPFLAGS=${BUILD_CPPFLAGS} \
252 LDFLAGS=${BUILD_LDFLAGS} \
253 AR=$(tc-getBUILD_AR) \
254 AS=$(tc-getBUILD_AS) \
255 CC=$(tc-getBUILD_CC) \
256 CPP=$(tc-getBUILD_CPP) \
257 CXX=$(tc-getBUILD_CXX) \
258 LD=$(tc-getBUILD_LD) \
259 NM=$(tc-getBUILD_NM) \
260 PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
261 RANLIB=$(tc-getBUILD_RANLIB) \
262 "$@"
263}
264
265# @FUNCTION: econf_build
266# @USAGE: [econf flags]
267# @DESCRIPTION:
268# Sometimes we need to locally build up some tools to run on CBUILD because
269# the package has helper utils which are compiled+executed when compiling.
270# This won't work when cross-compiling as the CHOST is set to a target which
271# we cannot natively execute.
272#
273# For example, the python package will build up a local python binary using
274# a portable build system (configure+make), but then use that binary to run
275# local python scripts to build up other components of the overall python.
276# We cannot rely on the python binary in $PATH as that often times will be
277# a different version, or not even installed in the first place. Instead,
278# we compile the code in a different directory to run on CBUILD, and then
279# use that binary when compiling the main package to run on CHOST.
280#
281# For example, with newer EAPIs, you'd do something like:
282# @CODE
283# src_configure() {
284# ECONF_SOURCE=${S}
285# if tc-is-cross-compiler ; then
286# mkdir "${WORKDIR}"/${CBUILD}
287# pushd "${WORKDIR}"/${CBUILD} >/dev/null
288# econf_build --disable-some-unused-stuff
289# popd >/dev/null
290# fi
291# ... normal build paths ...
292# }
293# src_compile() {
294# if tc-is-cross-compiler ; then
295# pushd "${WORKDIR}"/${CBUILD} >/dev/null
296# emake one-or-two-build-tools
297# ln/mv build-tools to normal build paths in ${S}/
298# popd >/dev/null
299# fi
300# ... normal build paths ...
301# }
302# @CODE
303econf_build() {
304 local CBUILD=${CBUILD:-${CHOST}}
305 tc-env_build econf --build=${CBUILD} --host=${CBUILD} "$@"
306}
307
308# @FUNCTION: tc-ld-is-gold
309# @USAGE: [toolchain prefix]
310# @DESCRIPTION:
311# Return true if the current linker is set to gold.
312tc-ld-is-gold() {
313 local out
314
315 # First check the linker directly.
316 out=$($(tc-getLD "$@") --version 2>&1)
317 if [[ ${out} == *"GNU gold"* ]] ; then
318 return 0
85 fi 319 fi
320
321 # Then see if they're selecting gold via compiler flags.
322 # Note: We're assuming they're using LDFLAGS to hold the
323 # options and not CFLAGS/CXXFLAGS.
324 local base="${T}/test-tc-gold"
325 cat <<-EOF > "${base}.c"
326 int main() { return 0; }
327 EOF
328 out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version "${base}.c" -o "${base}" 2>&1)
329 rm -f "${base}"*
330 if [[ ${out} == *"GNU gold"* ]] ; then
331 return 0
332 fi
333
334 # No gold here!
86 return 1 335 return 1
336}
337
338# @FUNCTION: tc-ld-disable-gold
339# @USAGE: [toolchain prefix]
340# @DESCRIPTION:
341# If the gold linker is currently selected, configure the compilation
342# settings so that we use the older bfd linker instead.
343tc-ld-disable-gold() {
344 if ! tc-ld-is-gold "$@" ; then
345 # They aren't using gold, so nothing to do!
346 return
347 fi
348
349 ewarn "Forcing usage of the BFD linker instead of GOLD"
350
351 # Set up LD to point directly to bfd if it's available.
352 local bfd_ld="$(tc-getLD "$@").bfd"
353 local path_ld=$(which "${bfd_ld}" 2>/dev/null)
354 [[ -e ${path_ld} ]] && export LD=${bfd_ld}
355
356 # Set up LDFLAGS to select gold based on the gcc version.
357 local major=$(gcc-major-version "$@")
358 local minor=$(gcc-minor-version "$@")
359 if [[ ${major} -lt 4 ]] || [[ ${major} -eq 4 && ${minor} -lt 8 ]] ; then
360 # <=gcc-4.7 requires some coercion. Only works if bfd exists.
361 if [[ -e ${path_ld} ]] ; then
362 local d="${T}/bfd-linker"
363 mkdir -p "${d}"
364 ln -sf "${path_ld}" "${d}"/ld
365 export LDFLAGS="${LDFLAGS} -B${d}"
366 else
367 die "unable to locate a BFD linker to bypass gold"
368 fi
369 else
370 # gcc-4.8+ supports -fuse-ld directly.
371 export LDFLAGS="${LDFLAGS} -fuse-ld=bfd"
372 fi
373}
374
375# @FUNCTION: tc-has-openmp
376# @USAGE: [toolchain prefix]
377# @DESCRIPTION:
378# See if the toolchain supports OpenMP.
379tc-has-openmp() {
380 local base="${T}/test-tc-openmp"
381 cat <<-EOF > "${base}.c"
382 #include <omp.h>
383 int main() {
384 int nthreads, tid, ret = 0;
385 #pragma omp parallel private(nthreads, tid)
386 {
387 tid = omp_get_thread_num();
388 nthreads = omp_get_num_threads(); ret += tid + nthreads;
389 }
390 return ret;
391 }
392 EOF
393 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
394 local ret=$?
395 rm -f "${base}"*
396 return ${ret}
397}
398
399# @FUNCTION: tc-has-tls
400# @USAGE: [-s|-c|-l] [toolchain prefix]
401# @DESCRIPTION:
402# See if the toolchain supports thread local storage (TLS). Use -s to test the
403# compiler, -c to also test the assembler, and -l to also test the C library
404# (the default).
405tc-has-tls() {
406 local base="${T}/test-tc-tls"
407 cat <<-EOF > "${base}.c"
408 int foo(int *i) {
409 static __thread int j = 0;
410 return *i ? j : *i;
411 }
412 EOF
413 local flags
414 case $1 in
415 -s) flags="-S";;
416 -c) flags="-c";;
417 -l) ;;
418 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
419 esac
420 : ${flags:=-fPIC -shared -Wl,-z,defs}
421 [[ $1 == -* ]] && shift
422 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
423 local ret=$?
424 rm -f "${base}"*
425 return ${ret}
87} 426}
88 427
89 428
90# Parse information from CBUILD/CHOST/CTARGET rather than 429# Parse information from CBUILD/CHOST/CTARGET rather than
91# use external variables from the profile. 430# use external variables from the profile.
94 433
95 local type=$1 434 local type=$1
96 local host=$2 435 local host=$2
97 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 436 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
98 437
438 local KV=${KV:-${KV_FULL}}
439 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
440 ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
441
99 case ${host} in 442 case ${host} in
443 aarch64*) echo arm64;;
100 alpha*) echo alpha;; 444 alpha*) echo alpha;;
101 x86_64*) ninj x86_64 amd64;;
102 arm*) echo arm;; 445 arm*) echo arm;;
446 avr*) ninj avr32 avr;;
447 bfin*) ninj blackfin bfin;;
448 c6x*) echo c6x;;
449 cris*) echo cris;;
450 frv*) echo frv;;
451 hexagon*) echo hexagon;;
103 hppa*) ninj parisc hppa;; 452 hppa*) ninj parisc hppa;;
453 i?86*)
454 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
455 # trees have been unified into 'x86'.
456 # FreeBSD still uses i386
457 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
458 echo i386
459 else
460 echo x86
461 fi
462 ;;
104 ia64*) echo ia64;; 463 ia64*) echo ia64;;
105 m68*) echo m68k;; 464 m68*) echo m68k;;
465 metag*) echo metag;;
466 microblaze*) echo microblaze;;
106 mips*) echo mips;; 467 mips*) echo mips;;
107 powerpc64*) echo ppc64;; 468 nios2*) echo nios2;;
108 powerpc*) [[ ${PROFILE_ARCH} == "ppc64" ]] \ 469 nios*) echo nios;;
109 && ninj ppc64 ppc \ 470 or32*) echo openrisc;;
471 powerpc*)
472 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
473 # have been unified into simply 'powerpc', but until 2.6.16,
474 # ppc32 is still using ARCH="ppc" as default
475 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
476 echo powerpc
477 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
478 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
479 echo powerpc
480 else
110 || echo ppc 481 echo ppc
482 fi
483 elif [[ ${host} == powerpc64* ]] ; then
484 echo ppc64
485 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
486 ninj ppc64 ppc
487 else
488 echo ppc
489 fi
111 ;; 490 ;;
491 riscv*) echo riscv;;
492 s390*) echo s390;;
493 score*) echo score;;
494 sh64*) ninj sh64 sh;;
495 sh*) echo sh;;
112 sparc64*) ninj sparc64 sparc;; 496 sparc64*) ninj sparc64 sparc;;
113 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 497 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
114 && ninj sparc64 sparc \ 498 && ninj sparc64 sparc \
115 || echo sparc 499 || echo sparc
116 ;; 500 ;;
117 s390*) echo s390;; 501 tile*) echo tile;;
118 sh64*) ninj sh64 sh;; 502 vax*) echo vax;;
119 sh*) echo sh;; 503 x86_64*freebsd*) echo amd64;;
120 i?86*) ninj i386 x86;; 504 x86_64*)
121 *) echo ${ARCH};; 505 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
506 # trees have been unified into 'x86'.
507 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
508 echo x86
509 else
510 ninj x86_64 amd64
511 fi
512 ;;
513 xtensa*) echo xtensa;;
514
515 # since our usage of tc-arch is largely concerned with
516 # normalizing inputs for testing ${CTARGET}, let's filter
517 # other cross targets (mingw and such) into the unknown.
518 *) echo unknown;;
122 esac 519 esac
123} 520}
521# @FUNCTION: tc-arch-kernel
522# @USAGE: [toolchain prefix]
523# @RETURN: name of the kernel arch according to the compiler target
124tc-arch-kernel() { 524tc-arch-kernel() {
125 tc-ninja_magic_to_arch kern $@ 525 tc-ninja_magic_to_arch kern "$@"
126} 526}
527# @FUNCTION: tc-arch
528# @USAGE: [toolchain prefix]
529# @RETURN: name of the portage arch according to the compiler target
127tc-arch() { 530tc-arch() {
128 tc-ninja_magic_to_arch portage $@ 531 tc-ninja_magic_to_arch portage "$@"
129} 532}
533
130tc-endian() { 534tc-endian() {
131 local host=$1 535 local host=$1
132 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 536 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
133 host=${host%%-*} 537 host=${host%%-*}
134 538
135 case ${host} in 539 case ${host} in
540 aarch64*be) echo big;;
541 aarch64) echo little;;
136 alpha*) echo big;; 542 alpha*) echo big;;
137 x86_64*) echo little;;
138 arm*b*) echo big;; 543 arm*b*) echo big;;
139 arm*) echo little;; 544 arm*) echo little;;
545 cris*) echo little;;
140 hppa*) echo big;; 546 hppa*) echo big;;
547 i?86*) echo little;;
141 ia64*) echo little;; 548 ia64*) echo little;;
142 m68*) echo big;; 549 m68*) echo big;;
143 mips*l*) echo little;; 550 mips*l*) echo little;;
144 mips*) echo big;; 551 mips*) echo big;;
552 powerpc*le) echo little;;
145 powerpc*) echo big;; 553 powerpc*) echo big;;
146 sparc*) echo big;;
147 s390*) echo big;; 554 s390*) echo big;;
148 sh*b*) echo big;; 555 sh*b*) echo big;;
149 sh*) echo little;; 556 sh*) echo little;;
557 sparc*) echo big;;
150 i?86*) echo little;; 558 x86_64*) echo little;;
151 *) echo wtf;; 559 *) echo wtf;;
152 esac 560 esac
153} 561}
154 562
155# Returns the version as by `$CC -dumpversion` 563# Internal func. The first argument is the version info to expand.
564# Query the preprocessor to improve compatibility across different
565# compilers rather than maintaining a --version flag matrix. #335943
566_gcc_fullversion() {
567 local ver="$1"; shift
568 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
569 eval echo "$ver"
570}
571
572# @FUNCTION: gcc-fullversion
573# @RETURN: compiler version (major.minor.micro: [3.4.6])
156gcc-fullversion() { 574gcc-fullversion() {
157 echo "$($(tc-getCC) -dumpversion)" 575 _gcc_fullversion '$1.$2.$3' "$@"
158} 576}
159# Returns the version, but only the <major>.<minor> 577# @FUNCTION: gcc-version
578# @RETURN: compiler version (major.minor: [3.4].6)
160gcc-version() { 579gcc-version() {
161 echo "$(gcc-fullversion | cut -f1,2 -d.)" 580 _gcc_fullversion '$1.$2' "$@"
162} 581}
163# Returns the Major version 582# @FUNCTION: gcc-major-version
583# @RETURN: major compiler version (major: [3].4.6)
164gcc-major-version() { 584gcc-major-version() {
165 echo "$(gcc-version | cut -f1 -d.)" 585 _gcc_fullversion '$1' "$@"
166} 586}
167# Returns the Minor version 587# @FUNCTION: gcc-minor-version
588# @RETURN: minor compiler version (minor: 3.[4].6)
168gcc-minor-version() { 589gcc-minor-version() {
169 echo "$(gcc-version | cut -f2 -d.)" 590 _gcc_fullversion '$2' "$@"
170} 591}
171# Returns the Micro version 592# @FUNCTION: gcc-micro-version
593# @RETURN: micro compiler version (micro: 3.4.[6])
172gcc-micro-version() { 594gcc-micro-version() {
173 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 595 _gcc_fullversion '$3' "$@"
174} 596}
175 597
598# Returns the installation directory - internal toolchain
599# function for use by _gcc-specs-exists (for flag-o-matic).
600_gcc-install-dir() {
601 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
602 awk '$1=="install:" {print $2}')"
603}
604# Returns true if the indicated specs file exists - internal toolchain
605# function for use by flag-o-matic.
606_gcc-specs-exists() {
607 [[ -f $(_gcc-install-dir)/$1 ]]
608}
609
610# Returns requested gcc specs directive unprocessed - for used by
611# gcc-specs-directive()
612# Note; later specs normally overwrite earlier ones; however if a later
613# spec starts with '+' then it appends.
614# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
615# as "Reading <file>", in order. Strictly speaking, if there's a
616# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
617# the same token anything from 'gcc -dumpspecs' is overridden by
618# the contents of $(gcc_install_dir)/specs so the result is the
619# same either way.
620_gcc-specs-directive_raw() {
621 local cc=$(tc-getCC)
622 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
623 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
624'BEGIN { pspec=""; spec=""; outside=1 }
625$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
626 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
627 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
628 { spec=spec $0 }
629END { print spec }'
630 return 0
631}
632
176# Returns requested gcc specs directive 633# Return the requested gcc specs directive, with all included
177# Note; if a spec exists more than once (e.g. in more than one specs file) 634# specs expanded.
178# the last one read is the active definition - i.e. they do not accumulate, 635# Note, it does not check for inclusion loops, which cause it
179# each new definition replaces any previous definition. 636# to never finish - but such loops are invalid for gcc and we're
637# assuming gcc is operational.
180gcc-specs-directive() { 638gcc-specs-directive() {
181 local specfiles=$($(tc-getCC) -v 2>&1 | grep "^Reading" | awk '{print $NF}') 639 local directive subdname subdirective
182 [[ -z ${specfiles} ]] && return 0 640 directive="$(_gcc-specs-directive_raw $1)"
183 awk -v spec=$1 \ 641 while [[ ${directive} == *%\(*\)* ]]; do
184'BEGIN { sstr=""; outside=1 } 642 subdname=${directive/*%\(}
185 $1=="*"spec":" { sstr=""; outside=0; next } 643 subdname=${subdname/\)*}
186 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next } 644 subdirective="$(_gcc-specs-directive_raw ${subdname})"
187 { sstr=sstr $0 } 645 directive="${directive//\%(${subdname})/${subdirective}}"
188END { print sstr }' ${specfiles} 646 done
647 echo "${directive}"
648 return 0
189} 649}
190 650
191# Returns true if gcc sets relro 651# Returns true if gcc sets relro
192gcc-specs-relro() { 652gcc-specs-relro() {
193 local directive 653 local directive
194 directive=$(gcc-specs-directive link_command) 654 directive=$(gcc-specs-directive link_command)
195 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 655 [[ "${directive/\{!norelro:}" != "${directive}" ]]
196} 656}
197# Returns true if gcc sets now 657# Returns true if gcc sets now
198gcc-specs-now() { 658gcc-specs-now() {
199 local directive 659 local directive
200 directive=$(gcc-specs-directive link_command) 660 directive=$(gcc-specs-directive link_command)
201 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 661 [[ "${directive/\{!nonow:}" != "${directive}" ]]
202} 662}
203# Returns true if gcc builds PIEs 663# Returns true if gcc builds PIEs
204gcc-specs-pie() { 664gcc-specs-pie() {
205 local directive 665 local directive
206 directive=$(gcc-specs-directive cc1) 666 directive=$(gcc-specs-directive cc1)
207 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 667 [[ "${directive/\{!nopie:}" != "${directive}" ]]
208} 668}
209# Returns true if gcc builds with the stack protector 669# Returns true if gcc builds with the stack protector
210gcc-specs-ssp() { 670gcc-specs-ssp() {
211 local directive 671 local directive
212 directive=$(gcc-specs-directive cc1) 672 directive=$(gcc-specs-directive cc1)
213 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 673 [[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
214} 674}
675# Returns true if gcc upgrades fstack-protector to fstack-protector-all
676gcc-specs-ssp-to-all() {
677 local directive
678 directive=$(gcc-specs-directive cc1)
679 [[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
680}
681# Returns true if gcc builds with fno-strict-overflow
682gcc-specs-nostrict() {
683 local directive
684 directive=$(gcc-specs-directive cc1)
685 [[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
686}
687# Returns true if gcc builds with fstack-check
688gcc-specs-stack-check() {
689 local directive
690 directive=$(gcc-specs-directive cc1)
691 [[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
692}
215 693
694
695# @FUNCTION: gen_usr_ldscript
696# @USAGE: [-a] <list of libs to create linker scripts for>
697# @DESCRIPTION:
698# This function generate linker scripts in /usr/lib for dynamic
699# libs in /lib. This is to fix linking problems when you have
700# the .so in /lib, and the .a in /usr/lib. What happens is that
701# in some cases when linking dynamic, the .a in /usr/lib is used
702# instead of the .so in /lib due to gcc/libtool tweaking ld's
703# library search path. This causes many builds to fail.
704# See bug #4411 for more info.
705#
706# Note that you should in general use the unversioned name of
707# the library (libfoo.so), as ldconfig should usually update it
708# correctly to point to the latest version of the library present.
709gen_usr_ldscript() {
710 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
711 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
712
713 tc-is-static-only && return
714
715 # Eventually we'd like to get rid of this func completely #417451
716 case ${CTARGET:-${CHOST}} in
717 *-darwin*) ;;
718 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
719 use prefix && return 0 ;;
720 *) return 0 ;;
721 esac
722
723 # Just make sure it exists
724 dodir /usr/${libdir}
725
726 if [[ $1 == "-a" ]] ; then
727 auto=true
728 shift
729 dodir /${libdir}
730 fi
731
732 # OUTPUT_FORMAT gives hints to the linker as to what binary format
733 # is referenced ... makes multilib saner
734 local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
735 if $(tc-getLD) --version | grep -q 'GNU gold' ; then
736 # If they're using gold, manually invoke the old bfd. #487696
737 local d="${T}/bfd-linker"
738 mkdir -p "${d}"
739 ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
740 flags+=( -B"${d}" )
741 fi
742 output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
743 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
744
745 for lib in "$@" ; do
746 local tlib
747 if ${auto} ; then
748 lib="lib${lib}${suffix}"
749 else
750 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
751 # This especially is for AIX where $(get_libname) can return ".a",
752 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
753 [[ -r ${ED}/${libdir}/${lib} ]] || continue
754 #TODO: better die here?
755 fi
756
757 case ${CTARGET:-${CHOST}} in
758 *-darwin*)
759 if ${auto} ; then
760 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
761 else
762 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
763 fi
764 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
765 tlib=${tlib##*/}
766
767 if ${auto} ; then
768 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
769 # some install_names are funky: they encode a version
770 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
771 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
772 fi
773 rm -f "${ED}"/${libdir}/${lib}
774 fi
775
776 # Mach-O files have an id, which is like a soname, it tells how
777 # another object linking against this lib should reference it.
778 # Since we moved the lib from usr/lib into lib this reference is
779 # wrong. Hence, we update it here. We don't configure with
780 # libdir=/lib because that messes up libtool files.
781 # Make sure we don't lose the specific version, so just modify the
782 # existing install_name
783 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
784 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
785 local nowrite=yes
786 fi
787 install_name_tool \
788 -id "${EPREFIX}"/${libdir}/${tlib} \
789 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
790 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
791 # Now as we don't use GNU binutils and our linker doesn't
792 # understand linker scripts, just create a symlink.
793 pushd "${ED}/usr/${libdir}" > /dev/null
794 ln -snf "../../${libdir}/${tlib}" "${lib}"
795 popd > /dev/null
796 ;;
797 *)
798 if ${auto} ; then
799 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
800 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
801 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
802 # some SONAMEs are funky: they encode a version before the .so
803 if [[ ${tlib} != ${lib}* ]] ; then
804 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
805 fi
806 rm -f "${ED}"/${libdir}/${lib}
807 else
808 tlib=${lib}
809 fi
810 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
811 /* GNU ld script
812 Since Gentoo has critical dynamic libraries in /lib, and the static versions
813 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
814 run into linking problems. This "fake" dynamic lib is a linker script that
815 redirects the linker to the real lib. And yes, this works in the cross-
816 compiling scenario as the sysroot-ed linker will prepend the real path.
817
818 See bug http://bugs.gentoo.org/4411 for more info.
819 */
820 ${output_format}
821 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
822 END_LDSCRIPT
823 ;;
824 esac
825 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
826 done
827}
828
829fi

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