/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2006 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 1.55 2006/01/24 22:35:10 dostrow Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.136 2015/03/31 04:27:29 vapier Exp $
4# 4
5# @ECLASS: toolchain-funcs.eclass
6# @MAINTAINER:
5# Author: 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.
15
16if [[ -z ${_TOOLCHAIN_FUNCS_ECLASS} ]]; then
17_TOOLCHAIN_FUNCS_ECLASS=1
9 18
10inherit multilib 19inherit multilib
11 20
12DESCRIPTION="Based on the ${ECLASS} eclass" 21# tc-getPROG <VAR [search vars]> <default> [tuple]
13
14tc-getPROG() { 22_tc-getPROG() {
15 local var=$1 23 local tuple=$1
24 local v var vars=$2
16 local prog=$2 25 local prog=$3
17 26
18 if [[ -n ${!var} ]] ; then 27 var=${vars%% *}
19 echo "${!var}" 28 for v in ${vars} ; do
20 return 0
21 fi
22
23 local search=
24 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
25 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
26 [[ -n ${search} ]] && prog=${search##*/}
27
28 export ${var}=${prog}
29 echo "${!var}"
30}
31
32# Returns the name of the archiver
33tc-getAR() { tc-getPROG AR ar "$@"; }
34# Returns the name of the assembler
35tc-getAS() { tc-getPROG AS as "$@"; }
36# Returns the name of the C compiler
37tc-getCC() { tc-getPROG CC gcc "$@"; }
38# Returns the name of the C++ compiler
39tc-getCXX() { tc-getPROG CXX g++ "$@"; }
40# Returns the name of the linker
41tc-getLD() { tc-getPROG LD ld "$@"; }
42# Returns the name of the symbol/object thingy
43tc-getNM() { tc-getPROG NM nm "$@"; }
44# Returns the name of the archiver indexer
45tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
46# Returns the name of the fortran compiler
47tc-getF77() { tc-getPROG F77 f77 "$@"; }
48# Returns the name of the java compiler
49tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
50
51# Returns the name of the C compiler for build
52tc-getBUILD_CC() {
53 local v
54 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
55 if [[ -n ${!v} ]] ; then 29 if [[ -n ${!v} ]] ; then
56 export BUILD_CC=${!v} 30 export ${var}="${!v}"
57 echo "${!v}" 31 echo "${!v}"
58 return 0 32 return 0
59 fi 33 fi
60 done 34 done
61 35
62 local search= 36 local search=
63 if [[ -n ${CBUILD} ]] ; then 37 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
64 search=$(type -p ${CBUILD}-gcc) 38 [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
65 search=${search##*/} 39 [[ -n ${search} ]] && prog=${search##*/}
66 fi
67 search=${search:-gcc}
68 40
69 export BUILD_CC=${search} 41 export ${var}=${prog}
70 echo "${search}" 42 echo "${!var}"
71} 43}
44tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
45tc-getPROG() { _tc-getPROG CHOST "$@"; }
72 46
47# @FUNCTION: tc-getAR
48# @USAGE: [toolchain prefix]
49# @RETURN: name of the archiver
50tc-getAR() { tc-getPROG AR ar "$@"; }
51# @FUNCTION: tc-getAS
52# @USAGE: [toolchain prefix]
53# @RETURN: name of the assembler
54tc-getAS() { tc-getPROG AS as "$@"; }
55# @FUNCTION: tc-getCC
56# @USAGE: [toolchain prefix]
57# @RETURN: name of the C compiler
58tc-getCC() { tc-getPROG CC gcc "$@"; }
59# @FUNCTION: tc-getCPP
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the C preprocessor
62tc-getCPP() { tc-getPROG CPP cpp "$@"; }
63# @FUNCTION: tc-getCXX
64# @USAGE: [toolchain prefix]
65# @RETURN: name of the C++ compiler
66tc-getCXX() { tc-getPROG CXX g++ "$@"; }
67# @FUNCTION: tc-getLD
68# @USAGE: [toolchain prefix]
69# @RETURN: name of the linker
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]
77# @RETURN: name of the symbol/object thingy
78tc-getNM() { tc-getPROG NM nm "$@"; }
79# @FUNCTION: tc-getRANLIB
80# @USAGE: [toolchain prefix]
81# @RETURN: name of the archiver indexer
82tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
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
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]
101# @RETURN: name of the java compiler
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 "$@"; }
111# @FUNCTION: tc-getDLLWRAP
112# @USAGE: [toolchain prefix]
113# @RETURN: name of the Windows dllwrap utility
114tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
115
116# @FUNCTION: tc-getBUILD_AR
117# @USAGE: [toolchain prefix]
118# @RETURN: name of the archiver for building binaries to run on the build machine
119tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
120# @FUNCTION: tc-getBUILD_AS
121# @USAGE: [toolchain prefix]
122# @RETURN: name of the assembler for building binaries to run on the build machine
123tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
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 "$@"; }
160
161# @FUNCTION: tc-export
162# @USAGE: <list of toolchain variables>
163# @DESCRIPTION:
73# Quick way to export a bunch of vars at once 164# Quick way to export a bunch of compiler vars at once.
74tc-export() { 165tc-export() {
75 local var 166 local var
76 for var in "$@" ; 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 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) 176 [[ ${CBUILD:-${CHOST}} != ${CHOST} ]]
177}
178
179# @FUNCTION: tc-is-softfloat
180# @DESCRIPTION:
181# See if this toolchain is a softfloat based one.
182# @CODE
183# The possible return values:
184# - only: the target is always softfloat (never had fpu)
185# - yes: the target should support softfloat
186# - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
187# - no: the target doesn't support softfloat
188# @CODE
189# This allows us to react differently where packages accept
190# softfloat flags in the case where support is optional, but
191# rejects softfloat flags where the target always lacks an fpu.
192tc-is-softfloat() {
193 local CTARGET=${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 # 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 local bfd_ld="$(tc-getLD "$@").bfd"
356 local path_ld=$(which "${bfd_ld}" 2>/dev/null)
357 [[ -e ${path_ld} ]] && export LD=${bfd_ld}
358
359 # Set up LDFLAGS to select gold based on the gcc version.
360 local major=$(gcc-major-version "$@")
361 local minor=$(gcc-minor-version "$@")
362 if [[ ${major} -lt 4 ]] || [[ ${major} -eq 4 && ${minor} -lt 8 ]] ; then
363 # <=gcc-4.7 requires some coercion. Only works if bfd exists.
364 if [[ -e ${path_ld} ]] ; then
365 local d="${T}/bfd-linker"
366 mkdir -p "${d}"
367 ln -sf "${path_ld}" "${d}"/ld
368 export LDFLAGS="${LDFLAGS} -B${d}"
369 else
370 die "unable to locate a BFD linker to bypass gold"
371 fi
372 else
373 # gcc-4.8+ supports -fuse-ld directly.
374 export LDFLAGS="${LDFLAGS} -fuse-ld=bfd"
375 fi
376}
377
378# @FUNCTION: tc-has-openmp
379# @USAGE: [toolchain prefix]
380# @DESCRIPTION:
381# See if the toolchain supports OpenMP.
382tc-has-openmp() {
383 local base="${T}/test-tc-openmp"
384 cat <<-EOF > "${base}.c"
385 #include <omp.h>
386 int main() {
387 int nthreads, tid, ret = 0;
388 #pragma omp parallel private(nthreads, tid)
389 {
390 tid = omp_get_thread_num();
391 nthreads = omp_get_num_threads(); ret += tid + nthreads;
392 }
393 return ret;
394 }
395 EOF
396 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
397 local ret=$?
398 rm -f "${base}"*
399 return ${ret}
400}
401
402# @FUNCTION: tc-has-tls
403# @USAGE: [-s|-c|-l] [toolchain prefix]
404# @DESCRIPTION:
405# See if the toolchain supports thread local storage (TLS). Use -s to test the
406# compiler, -c to also test the assembler, and -l to also test the C library
407# (the default).
408tc-has-tls() {
409 local base="${T}/test-tc-tls"
410 cat <<-EOF > "${base}.c"
411 int foo(int *i) {
412 static __thread int j = 0;
413 return *i ? j : *i;
414 }
415 EOF
416 local flags
417 case $1 in
418 -s) flags="-S";;
419 -c) flags="-c";;
420 -l) ;;
421 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
422 esac
423 : ${flags:=-fPIC -shared -Wl,-z,defs}
424 [[ $1 == -* ]] && shift
425 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
426 local ret=$?
427 rm -f "${base}"*
428 return ${ret}
84} 429}
85 430
86 431
87# Parse information from CBUILD/CHOST/CTARGET rather than 432# Parse information from CBUILD/CHOST/CTARGET rather than
88# use external variables from the profile. 433# use external variables from the profile.
91 436
92 local type=$1 437 local type=$1
93 local host=$2 438 local host=$2
94 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 439 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
95 440
441 local KV=${KV:-${KV_FULL}}
442 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
443 ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
444
96 case ${host} in 445 case ${host} in
446 aarch64*) echo arm64;;
97 alpha*) echo alpha;; 447 alpha*) echo alpha;;
98 arm*) echo arm;; 448 arm*) echo arm;;
449 avr*) ninj avr32 avr;;
99 bfin*) ninj blackfin bfin;; 450 bfin*) ninj blackfin bfin;;
451 c6x*) echo c6x;;
100 cris*) echo cris;; 452 cris*) echo cris;;
453 frv*) echo frv;;
454 hexagon*) echo hexagon;;
101 hppa*) ninj parisc hppa;; 455 hppa*) ninj parisc hppa;;
102 i?86*) ninj i386 x86;; 456 i?86*)
457 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
458 # trees have been unified into 'x86'.
459 # FreeBSD still uses i386
460 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
461 echo i386
462 else
463 echo x86
464 fi
465 ;;
103 ia64*) echo ia64;; 466 ia64*) echo ia64;;
104 m68*) echo m68k;; 467 m68*) echo m68k;;
468 metag*) echo metag;;
469 microblaze*) echo microblaze;;
105 mips*) echo mips;; 470 mips*) echo mips;;
106 nios2*) echo nios2;; 471 nios2*) echo nios2;;
107 nios*) echo nios;; 472 nios*) echo nios;;
473 or32*) echo openrisc;;
108 powerpc*) 474 powerpc*)
109 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees 475 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
110 # have been unified into simply 'powerpc', but until 2.6.16, 476 # have been unified into simply 'powerpc', but until 2.6.16,
111 # ppc32 is still using ARCH="ppc" as default 477 # ppc32 is still using ARCH="ppc" as default
112 if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then 478 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
113 echo powerpc 479 echo powerpc
114 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then 480 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
115 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then 481 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
116 echo powerpc 482 echo powerpc
117 else 483 else
118 echo ppc 484 echo ppc
119 fi 485 fi
120 elif [[ ${host} == powerpc64* ]] ; then 486 elif [[ ${host} == powerpc64* ]] ; then
121 echo ppc64 487 echo ppc64
122 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then 488 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
123 ninj ppc64 ppc 489 ninj ppc64 ppc
124 else 490 else
125 echo ppc 491 echo ppc
126 fi 492 fi
127 ;; 493 ;;
494 riscv*) echo riscv;;
128 s390*) echo s390;; 495 s390*) echo s390;;
496 score*) echo score;;
129 sh64*) ninj sh64 sh;; 497 sh64*) ninj sh64 sh;;
130 sh*) echo sh;; 498 sh*) echo sh;;
131 sparc64*) ninj sparc64 sparc;; 499 sparc64*) ninj sparc64 sparc;;
132 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 500 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
133 && ninj sparc64 sparc \ 501 && ninj sparc64 sparc \
134 || echo sparc 502 || echo sparc
135 ;; 503 ;;
504 tile*) echo tile;;
136 vax*) echo vax;; 505 vax*) echo vax;;
137 x86_64*) ninj x86_64 amd64;; 506 x86_64*freebsd*) echo amd64;;
138 *) echo ${ARCH};; 507 x86_64*)
508 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
509 # trees have been unified into 'x86'.
510 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
511 echo x86
512 else
513 ninj x86_64 amd64
514 fi
515 ;;
516 xtensa*) echo xtensa;;
517
518 # since our usage of tc-arch is largely concerned with
519 # normalizing inputs for testing ${CTARGET}, let's filter
520 # other cross targets (mingw and such) into the unknown.
521 *) echo unknown;;
139 esac 522 esac
140} 523}
524# @FUNCTION: tc-arch-kernel
525# @USAGE: [toolchain prefix]
526# @RETURN: name of the kernel arch according to the compiler target
141tc-arch-kernel() { 527tc-arch-kernel() {
142 tc-ninja_magic_to_arch kern $@ 528 tc-ninja_magic_to_arch kern "$@"
143} 529}
530# @FUNCTION: tc-arch
531# @USAGE: [toolchain prefix]
532# @RETURN: name of the portage arch according to the compiler target
144tc-arch() { 533tc-arch() {
145 tc-ninja_magic_to_arch portage $@ 534 tc-ninja_magic_to_arch portage "$@"
146} 535}
536
147tc-endian() { 537tc-endian() {
148 local host=$1 538 local host=$1
149 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 539 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
150 host=${host%%-*} 540 host=${host%%-*}
151 541
152 case ${host} in 542 case ${host} in
543 aarch64*be) echo big;;
544 aarch64) echo little;;
153 alpha*) echo big;; 545 alpha*) echo big;;
154 arm*b*) echo big;; 546 arm*b*) echo big;;
155 arm*) echo little;; 547 arm*) echo little;;
156 cris*) echo little;; 548 cris*) echo little;;
157 hppa*) echo big;; 549 hppa*) echo big;;
158 i?86*) echo little;; 550 i?86*) echo little;;
159 ia64*) echo little;; 551 ia64*) echo little;;
160 m68*) echo big;; 552 m68*) echo big;;
161 mips*l*) echo little;; 553 mips*l*) echo little;;
162 mips*) echo big;; 554 mips*) echo big;;
555 powerpc*le) echo little;;
163 powerpc*) echo big;; 556 powerpc*) echo big;;
164 s390*) echo big;; 557 s390*) echo big;;
165 sh*b*) echo big;; 558 sh*b*) echo big;;
166 sh*) echo little;; 559 sh*) echo little;;
167 sparc*) echo big;; 560 sparc*) echo big;;
168 x86_64*) echo little;; 561 x86_64*) echo little;;
169 *) echo wtf;; 562 *) echo wtf;;
170 esac 563 esac
171} 564}
172 565
173# Returns the version as by `$CC -dumpversion` 566# Internal func. The first argument is the version info to expand.
567# Query the preprocessor to improve compatibility across different
568# compilers rather than maintaining a --version flag matrix. #335943
569_gcc_fullversion() {
570 local ver="$1"; shift
571 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
572 eval echo "$ver"
573}
574
575# @FUNCTION: gcc-fullversion
576# @RETURN: compiler version (major.minor.micro: [3.4.6])
174gcc-fullversion() { 577gcc-fullversion() {
175 echo "$($(tc-getCC) -dumpversion)" 578 _gcc_fullversion '$1.$2.$3' "$@"
176} 579}
177# Returns the version, but only the <major>.<minor> 580# @FUNCTION: gcc-version
581# @RETURN: compiler version (major.minor: [3.4].6)
178gcc-version() { 582gcc-version() {
179 echo "$(gcc-fullversion | cut -f1,2 -d.)" 583 _gcc_fullversion '$1.$2' "$@"
180} 584}
181# Returns the Major version 585# @FUNCTION: gcc-major-version
586# @RETURN: major compiler version (major: [3].4.6)
182gcc-major-version() { 587gcc-major-version() {
183 echo "$(gcc-version | cut -f1 -d.)" 588 _gcc_fullversion '$1' "$@"
184} 589}
185# Returns the Minor version 590# @FUNCTION: gcc-minor-version
591# @RETURN: minor compiler version (minor: 3.[4].6)
186gcc-minor-version() { 592gcc-minor-version() {
187 echo "$(gcc-version | cut -f2 -d.)" 593 _gcc_fullversion '$2' "$@"
188} 594}
189# Returns the Micro version 595# @FUNCTION: gcc-micro-version
596# @RETURN: micro compiler version (micro: 3.4.[6])
190gcc-micro-version() { 597gcc-micro-version() {
191 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 598 _gcc_fullversion '$3' "$@"
192} 599}
193 600
601# Returns the installation directory - internal toolchain
602# function for use by _gcc-specs-exists (for flag-o-matic).
603_gcc-install-dir() {
604 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
605 awk '$1=="install:" {print $2}')"
606}
607# Returns true if the indicated specs file exists - internal toolchain
608# function for use by flag-o-matic.
609_gcc-specs-exists() {
610 [[ -f $(_gcc-install-dir)/$1 ]]
611}
612
194# Returns requested gcc specs directive 613# Returns requested gcc specs directive unprocessed - for used by
614# gcc-specs-directive()
195# Note; later specs normally overwrite earlier ones; however if a later 615# Note; later specs normally overwrite earlier ones; however if a later
196# spec starts with '+' then it appends. 616# spec starts with '+' then it appends.
197# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" 617# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
198# as "Reading <file>", in order. 618# as "Reading <file>", in order. Strictly speaking, if there's a
619# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
620# the same token anything from 'gcc -dumpspecs' is overridden by
621# the contents of $(gcc_install_dir)/specs so the result is the
622# same either way.
199gcc-specs-directive() { 623_gcc-specs-directive_raw() {
624 local cc=$(tc-getCC)
200 local specfiles=$($(tc-getCC) -v 2>&1 | awk '$1=="Reading" {print $NF}') 625 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
201 $(tc-getCC) -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ 626 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
202'BEGIN { pspec=""; spec=""; outside=1 } 627'BEGIN { pspec=""; spec=""; outside=1 }
203$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 628$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
204 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next } 629 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
205 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next } 630 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
206 { spec=spec $0 } 631 { spec=spec $0 }
207END { print spec }' 632END { print spec }'
208 return 0 633 return 0
209} 634}
210 635
636# Return the requested gcc specs directive, with all included
637# specs expanded.
638# Note, it does not check for inclusion loops, which cause it
639# to never finish - but such loops are invalid for gcc and we're
640# assuming gcc is operational.
641gcc-specs-directive() {
642 local directive subdname subdirective
643 directive="$(_gcc-specs-directive_raw $1)"
644 while [[ ${directive} == *%\(*\)* ]]; do
645 subdname=${directive/*%\(}
646 subdname=${subdname/\)*}
647 subdirective="$(_gcc-specs-directive_raw ${subdname})"
648 directive="${directive//\%(${subdname})/${subdirective}}"
649 done
650 echo "${directive}"
651 return 0
652}
653
211# Returns true if gcc sets relro 654# Returns true if gcc sets relro
212gcc-specs-relro() { 655gcc-specs-relro() {
213 local directive 656 local directive
214 directive=$(gcc-specs-directive link_command) 657 directive=$(gcc-specs-directive link_command)
215 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 658 [[ "${directive/\{!norelro:}" != "${directive}" ]]
216} 659}
217# Returns true if gcc sets now 660# Returns true if gcc sets now
218gcc-specs-now() { 661gcc-specs-now() {
219 local directive 662 local directive
220 directive=$(gcc-specs-directive link_command) 663 directive=$(gcc-specs-directive link_command)
221 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 664 [[ "${directive/\{!nonow:}" != "${directive}" ]]
222} 665}
223# Returns true if gcc builds PIEs 666# Returns true if gcc builds PIEs
224gcc-specs-pie() { 667gcc-specs-pie() {
225 local directive 668 local directive
226 directive=$(gcc-specs-directive cc1) 669 directive=$(gcc-specs-directive cc1)
227 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 670 [[ "${directive/\{!nopie:}" != "${directive}" ]]
228} 671}
229# Returns true if gcc builds with the stack protector 672# Returns true if gcc builds with the stack protector
230gcc-specs-ssp() { 673gcc-specs-ssp() {
231 local directive 674 local directive
232 directive=$(gcc-specs-directive cc1) 675 directive=$(gcc-specs-directive cc1)
233 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 676 [[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
234} 677}
235# Returns true if gcc upgrades fstack-protector to fstack-protector-all 678# Returns true if gcc upgrades fstack-protector to fstack-protector-all
236gcc-specs-ssp-to-all() { 679gcc-specs-ssp-to-all() {
237 local directive 680 local directive
238 directive=$(gcc-specs-directive cc1) 681 directive=$(gcc-specs-directive cc1)
239 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 682 [[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
240} 683}
684# Returns true if gcc builds with fno-strict-overflow
685gcc-specs-nostrict() {
686 local directive
687 directive=$(gcc-specs-directive cc1)
688 [[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
689}
690# Returns true if gcc builds with fstack-check
691gcc-specs-stack-check() {
692 local directive
693 directive=$(gcc-specs-directive cc1)
694 [[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
695}
696
697
698# @FUNCTION: gen_usr_ldscript
699# @USAGE: [-a] <list of libs to create linker scripts for>
700# @DESCRIPTION:
701# This function generate linker scripts in /usr/lib for dynamic
702# libs in /lib. This is to fix linking problems when you have
703# the .so in /lib, and the .a in /usr/lib. What happens is that
704# in some cases when linking dynamic, the .a in /usr/lib is used
705# instead of the .so in /lib due to gcc/libtool tweaking ld's
706# library search path. This causes many builds to fail.
707# See bug #4411 for more info.
708#
709# Note that you should in general use the unversioned name of
710# the library (libfoo.so), as ldconfig should usually update it
711# correctly to point to the latest version of the library present.
712gen_usr_ldscript() {
713 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
714 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
715
716 tc-is-static-only && return
717
718 # Eventually we'd like to get rid of this func completely #417451
719 case ${CTARGET:-${CHOST}} in
720 *-darwin*) ;;
721 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
722 use prefix && return 0 ;;
723 *) return 0 ;;
724 esac
725
726 # Just make sure it exists
727 dodir /usr/${libdir}
728
729 if [[ $1 == "-a" ]] ; then
730 auto=true
731 shift
732 dodir /${libdir}
733 fi
734
735 # OUTPUT_FORMAT gives hints to the linker as to what binary format
736 # is referenced ... makes multilib saner
737 local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
738 if $(tc-getLD) --version | grep -q 'GNU gold' ; then
739 # If they're using gold, manually invoke the old bfd. #487696
740 local d="${T}/bfd-linker"
741 mkdir -p "${d}"
742 ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
743 flags+=( -B"${d}" )
744 fi
745 output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
746 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
747
748 for lib in "$@" ; do
749 local tlib
750 if ${auto} ; then
751 lib="lib${lib}${suffix}"
752 else
753 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
754 # This especially is for AIX where $(get_libname) can return ".a",
755 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
756 [[ -r ${ED}/${libdir}/${lib} ]] || continue
757 #TODO: better die here?
758 fi
759
760 case ${CTARGET:-${CHOST}} in
761 *-darwin*)
762 if ${auto} ; then
763 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
764 else
765 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
766 fi
767 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
768 tlib=${tlib##*/}
769
770 if ${auto} ; then
771 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
772 # some install_names are funky: they encode a version
773 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
774 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
775 fi
776 rm -f "${ED}"/${libdir}/${lib}
777 fi
778
779 # Mach-O files have an id, which is like a soname, it tells how
780 # another object linking against this lib should reference it.
781 # Since we moved the lib from usr/lib into lib this reference is
782 # wrong. Hence, we update it here. We don't configure with
783 # libdir=/lib because that messes up libtool files.
784 # Make sure we don't lose the specific version, so just modify the
785 # existing install_name
786 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
787 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
788 local nowrite=yes
789 fi
790 install_name_tool \
791 -id "${EPREFIX}"/${libdir}/${tlib} \
792 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
793 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
794 # Now as we don't use GNU binutils and our linker doesn't
795 # understand linker scripts, just create a symlink.
796 pushd "${ED}/usr/${libdir}" > /dev/null
797 ln -snf "../../${libdir}/${tlib}" "${lib}"
798 popd > /dev/null
799 ;;
800 *)
801 if ${auto} ; then
802 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
803 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
804 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
805 # some SONAMEs are funky: they encode a version before the .so
806 if [[ ${tlib} != ${lib}* ]] ; then
807 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
808 fi
809 rm -f "${ED}"/${libdir}/${lib}
810 else
811 tlib=${lib}
812 fi
813 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
814 /* GNU ld script
815 Since Gentoo has critical dynamic libraries in /lib, and the static versions
816 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
817 run into linking problems. This "fake" dynamic lib is a linker script that
818 redirects the linker to the real lib. And yes, this works in the cross-
819 compiling scenario as the sysroot-ed linker will prepend the real path.
820
821 See bug http://bugs.gentoo.org/4411 for more info.
822 */
823 ${output_format}
824 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
825 END_LDSCRIPT
826 ;;
827 esac
828 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
829 done
830}
831
832fi

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