/[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 1.20 2005/01/11 01:07:49 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.134 2015/03/16 19:26:39 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=$3
20 26
27 var=${vars%% *}
28 for v in ${vars} ; do
21 if [[ -n ${!var} ]] ; then 29 if [[ -n ${!v} ]] ; then
30 export ${var}="${!v}"
22 echo "${!var}" 31 echo "${!v}"
23 return 0 32 return 0
24 fi 33 fi
34 done
25 35
26 if [[ -n ${CHOST} ]] ; then 36 local search=
27 local search=$(type -p "${CHOST}-${prog}") 37 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
38 [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
28 [[ -n ${search} ]] && prog=${search##*/} 39 [[ -n ${search} ]] && prog=${search##*/}
29 fi
30 40
31 export ${var}=${prog} 41 export ${var}=${prog}
32 echo "${!var}" 42 echo "${!var}"
33} 43}
44tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
45tc-getPROG() { _tc-getPROG CHOST "$@"; }
34 46
35# Returns the name of the archiver 47# @FUNCTION: tc-getAR
48# @USAGE: [toolchain prefix]
49# @RETURN: name of the archiver
36tc-getAR() { tc-getPROG AR ar; } 50tc-getAR() { tc-getPROG AR ar "$@"; }
37# Returns the name of the assembler 51# @FUNCTION: tc-getAS
52# @USAGE: [toolchain prefix]
53# @RETURN: name of the assembler
38tc-getAS() { tc-getPROG AS as; } 54tc-getAS() { tc-getPROG AS as "$@"; }
55# @FUNCTION: tc-getCC
56# @USAGE: [toolchain prefix]
39# Returns the name of the C compiler 57# @RETURN: name of the C compiler
40tc-getCC() { tc-getPROG CC gcc; } 58tc-getCC() { tc-getPROG CC gcc "$@"; }
59# @FUNCTION: tc-getCPP
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the C preprocessor
62tc-getCPP() { tc-getPROG CPP cpp "$@"; }
63# @FUNCTION: tc-getCXX
64# @USAGE: [toolchain prefix]
41# Returns the name of the C++ compiler 65# @RETURN: name of the C++ compiler
42tc-getCXX() { tc-getPROG CXX g++; } 66tc-getCXX() { tc-getPROG CXX g++ "$@"; }
43# Returns the name of the linker 67# @FUNCTION: tc-getLD
68# @USAGE: [toolchain prefix]
69# @RETURN: name of the linker
44tc-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]
45# Returns the name of the symbol/object thingy 77# @RETURN: name of the symbol/object thingy
46tc-getNM() { tc-getPROG NM nm; } 78tc-getNM() { tc-getPROG NM nm "$@"; }
79# @FUNCTION: tc-getRANLIB
80# @USAGE: [toolchain prefix]
47# Returns the name of the archiver indexer 81# @RETURN: name of the archiver indexer
48tc-getRANLIB() { tc-getPROG RANLIB ranlib; } 82tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
49# 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
50tc-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]
51# Returns the name of the java compiler 101# @RETURN: name of the java compiler
52tc-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 "$@"; }
111# @FUNCTION: tc-getDLLWRAP
112# @USAGE: [toolchain prefix]
113# @RETURN: name of the Windows dllwrap utility
114tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
53 115
54# Returns the name of the C compiler for build 116# @FUNCTION: tc-getBUILD_AR
55tc-getBUILD_CC() { 117# @USAGE: [toolchain prefix]
56 if [[ -n ${CC_FOR_BUILD} ]] ; then 118# @RETURN: name of the archiver for building binaries to run on the build machine
57 export BUILD_CC=${CC_FOR_BUILD} 119tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
58 echo "${CC_FOR_BUILD}" 120# @FUNCTION: tc-getBUILD_AS
59 return 0 121# @USAGE: [toolchain prefix]
60 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 "$@"; }
156# @FUNCTION: tc-getBUILD_PKG_CONFIG
157# @USAGE: [toolchain prefix]
158# @RETURN: name of the pkg-config tool for building binaries to run on the build machine
159tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
61 160
62 local search= 161# @FUNCTION: tc-export
63 if [[ -n ${CBUILD} ]] ; then 162# @USAGE: <list of toolchain variables>
64 search=$(type -p "${CBUILD}-gcc") 163# @DESCRIPTION:
65 search=${search##*/}
66 else
67 search=gcc
68 fi
69
70 export BUILD_CC=${search}
71 echo "${search}"
72}
73
74# Quick way to export a bunch of vars at once 164# Quick way to export a bunch of compiler vars at once.
75tc-export() { 165tc-export() {
76 local var 166 local var
77 for var in "$@" ; do 167 for var in "$@" ; do
168 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
78 eval tc-get${var} 169 eval tc-get${var} > /dev/null
79 done 170 done
80} 171}
81 172
82# 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
83tc-is-cross-compiler() { 175tc-is-cross-compiler() {
84 if [[ -n ${CBUILD} ]] ; then 176 [[ ${CBUILD:-${CHOST}} != ${CHOST} ]]
85 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 [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
201 echo "softfp"
202 else
203 echo "no"
86 fi 204 fi
87 return 1 205 ;;
206 esac
88} 207}
89 208
209# @FUNCTION: tc-is-static-only
210# @DESCRIPTION:
211# Return shell true if the target does not support shared libs, shell false
212# otherwise.
213tc-is-static-only() {
214 local host=${CTARGET:-${CHOST}}
90 215
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-has-openmp
309# @USAGE: [toolchain prefix]
310# @DESCRIPTION:
311# See if the toolchain supports OpenMP.
312tc-has-openmp() {
313 local base="${T}/test-tc-openmp"
314 cat <<-EOF > "${base}.c"
315 #include <omp.h>
316 int main() {
317 int nthreads, tid, ret = 0;
318 #pragma omp parallel private(nthreads, tid)
319 {
320 tid = omp_get_thread_num();
321 nthreads = omp_get_num_threads(); ret += tid + nthreads;
322 }
323 return ret;
324 }
325 EOF
326 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
327 local ret=$?
328 rm -f "${base}"*
329 return ${ret}
330}
331
332# @FUNCTION: tc-has-tls
333# @USAGE: [-s|-c|-l] [toolchain prefix]
334# @DESCRIPTION:
335# See if the toolchain supports thread local storage (TLS). Use -s to test the
336# compiler, -c to also test the assembler, and -l to also test the C library
337# (the default).
338tc-has-tls() {
339 local base="${T}/test-tc-tls"
340 cat <<-EOF > "${base}.c"
341 int foo(int *i) {
342 static __thread int j = 0;
343 return *i ? j : *i;
344 }
345 EOF
346 local flags
347 case $1 in
348 -s) flags="-S";;
349 -c) flags="-c";;
350 -l) ;;
351 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
352 esac
353 : ${flags:=-fPIC -shared -Wl,-z,defs}
354 [[ $1 == -* ]] && shift
355 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
356 local ret=$?
357 rm -f "${base}"*
358 return ${ret}
359}
360
361
91# Parse information from CBUILD/CHOST/CTARGET rather than 362# Parse information from CBUILD/CHOST/CTARGET rather than
92# use external variables from the profile. 363# use external variables from the profile.
93tc-ninja_magic_to_arch() { 364tc-ninja_magic_to_arch() {
94ninj() { [[ ${type} = "kern" ]] && echo $1 || echo $2 ; } 365ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
95 366
96 local type=$1 367 local type=$1
97 local host=$2 368 local host=$2
98 [[ -z ${host} ]] && arg=${CHOST} 369 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
370
371 local KV=${KV:-${KV_FULL}}
372 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
373 ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
99 374
100 case ${host} in 375 case ${host} in
376 aarch64*) echo arm64;;
101 alpha*) echo alpha;; 377 alpha*) echo alpha;;
102 x86_64*) ninj x86_64 amd64;;
103 arm*) echo arm;; 378 arm*) echo arm;;
379 avr*) ninj avr32 avr;;
380 bfin*) ninj blackfin bfin;;
381 c6x*) echo c6x;;
382 cris*) echo cris;;
383 frv*) echo frv;;
384 hexagon*) echo hexagon;;
104 hppa*) ninj parisc hppa;; 385 hppa*) ninj parisc hppa;;
386 i?86*)
387 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
388 # trees have been unified into 'x86'.
389 # FreeBSD still uses i386
390 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
391 echo i386
392 else
393 echo x86
394 fi
395 ;;
105 ia64*) echo ia64;; 396 ia64*) echo ia64;;
397 m68*) echo m68k;;
398 metag*) echo metag;;
399 microblaze*) echo microblaze;;
106 mips*) echo mips;; 400 mips*) echo mips;;
107 powerpc64*) echo ppc64;; 401 nios2*) echo nios2;;
108 powerpc*) echo ppc;; 402 nios*) echo nios;;
109 sparc64*) ninj sparc64 sparc;; 403 or32*) echo openrisc;;
110 sparc*) echo sparc;; 404 powerpc*)
405 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
406 # have been unified into simply 'powerpc', but until 2.6.16,
407 # ppc32 is still using ARCH="ppc" as default
408 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
409 echo powerpc
410 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
411 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
412 echo powerpc
413 else
414 echo ppc
415 fi
416 elif [[ ${host} == powerpc64* ]] ; then
417 echo ppc64
418 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
419 ninj ppc64 ppc
420 else
421 echo ppc
422 fi
423 ;;
424 riscv*) echo riscv;;
111 s390*) echo s390;; 425 s390*) echo s390;;
426 score*) echo score;;
112 sh64*) ninj sh64 sh;; 427 sh64*) ninj sh64 sh;;
113 sh*) echo sh;; 428 sh*) echo sh;;
429 sparc64*) ninj sparc64 sparc;;
430 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
431 && ninj sparc64 sparc \
432 || echo sparc
433 ;;
434 tile*) echo tile;;
435 vax*) echo vax;;
436 x86_64*freebsd*) echo amd64;;
437 x86_64*)
438 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
439 # trees have been unified into 'x86'.
440 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
441 echo x86
442 else
443 ninj x86_64 amd64
444 fi
445 ;;
446 xtensa*) echo xtensa;;
447
448 # since our usage of tc-arch is largely concerned with
449 # normalizing inputs for testing ${CTARGET}, let's filter
450 # other cross targets (mingw and such) into the unknown.
451 *) echo unknown;;
452 esac
453}
454# @FUNCTION: tc-arch-kernel
455# @USAGE: [toolchain prefix]
456# @RETURN: name of the kernel arch according to the compiler target
457tc-arch-kernel() {
458 tc-ninja_magic_to_arch kern "$@"
459}
460# @FUNCTION: tc-arch
461# @USAGE: [toolchain prefix]
462# @RETURN: name of the portage arch according to the compiler target
463tc-arch() {
464 tc-ninja_magic_to_arch portage "$@"
465}
466
467tc-endian() {
468 local host=$1
469 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
470 host=${host%%-*}
471
472 case ${host} in
473 aarch64*be) echo big;;
474 aarch64) echo little;;
475 alpha*) echo big;;
476 arm*b*) echo big;;
477 arm*) echo little;;
478 cris*) echo little;;
479 hppa*) echo big;;
114 i?86*) echo x86;; 480 i?86*) echo little;;
481 ia64*) echo little;;
482 m68*) echo big;;
483 mips*l*) echo little;;
484 mips*) echo big;;
485 powerpc*le) echo little;;
486 powerpc*) echo big;;
487 s390*) echo big;;
488 sh*b*) echo big;;
489 sh*) echo little;;
490 sparc*) echo big;;
491 x86_64*) echo little;;
115 *) echo wtf;; 492 *) echo wtf;;
116 esac 493 esac
117} 494}
118tc-arch-kernel() {
119 tc-ninja_magic_to_arch kern $@
120}
121tc-arch() {
122 tc-ninja_magic_to_arch portage $@
123}
124tc-endian() {
125 local host=$1
126 [[ -z ${host} ]] && host=${CHOST}
127 495
128 case ${host} in 496# Internal func. The first argument is the version info to expand.
129 alpha*) echo big;; 497# Query the preprocessor to improve compatibility across different
130 x86_64*) echo little;; 498# compilers rather than maintaining a --version flag matrix. #335943
131 arm*eb-*) echo big;; 499_gcc_fullversion() {
132 arm*) echo little;; 500 local ver="$1"; shift
133 hppa*) echo big;; 501 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
134 ia64*) echo little;; 502 eval echo "$ver"
135 m68k*) echo big;; 503}
136 mips*el-*) echo little;; 504
137 mips*) echo big;; 505# @FUNCTION: gcc-fullversion
138 powerpc*) echo big;; 506# @RETURN: compiler version (major.minor.micro: [3.4.6])
139 sparc*) echo big;; 507gcc-fullversion() {
140 s390*) echo big;; 508 _gcc_fullversion '$1.$2.$3' "$@"
141 sh*el-) echo little;; 509}
142 sh*) echo big;; 510# @FUNCTION: gcc-version
143 i?86*) echo little;; 511# @RETURN: compiler version (major.minor: [3.4].6)
144 *) echo wtf;; 512gcc-version() {
513 _gcc_fullversion '$1.$2' "$@"
514}
515# @FUNCTION: gcc-major-version
516# @RETURN: major compiler version (major: [3].4.6)
517gcc-major-version() {
518 _gcc_fullversion '$1' "$@"
519}
520# @FUNCTION: gcc-minor-version
521# @RETURN: minor compiler version (minor: 3.[4].6)
522gcc-minor-version() {
523 _gcc_fullversion '$2' "$@"
524}
525# @FUNCTION: gcc-micro-version
526# @RETURN: micro compiler version (micro: 3.4.[6])
527gcc-micro-version() {
528 _gcc_fullversion '$3' "$@"
529}
530
531# Returns the installation directory - internal toolchain
532# function for use by _gcc-specs-exists (for flag-o-matic).
533_gcc-install-dir() {
534 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
535 awk '$1=="install:" {print $2}')"
536}
537# Returns true if the indicated specs file exists - internal toolchain
538# function for use by flag-o-matic.
539_gcc-specs-exists() {
540 [[ -f $(_gcc-install-dir)/$1 ]]
541}
542
543# Returns requested gcc specs directive unprocessed - for used by
544# gcc-specs-directive()
545# Note; later specs normally overwrite earlier ones; however if a later
546# spec starts with '+' then it appends.
547# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
548# as "Reading <file>", in order. Strictly speaking, if there's a
549# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
550# the same token anything from 'gcc -dumpspecs' is overridden by
551# the contents of $(gcc_install_dir)/specs so the result is the
552# same either way.
553_gcc-specs-directive_raw() {
554 local cc=$(tc-getCC)
555 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
556 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
557'BEGIN { pspec=""; spec=""; outside=1 }
558$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
559 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
560 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
561 { spec=spec $0 }
562END { print spec }'
563 return 0
564}
565
566# Return the requested gcc specs directive, with all included
567# specs expanded.
568# Note, it does not check for inclusion loops, which cause it
569# to never finish - but such loops are invalid for gcc and we're
570# assuming gcc is operational.
571gcc-specs-directive() {
572 local directive subdname subdirective
573 directive="$(_gcc-specs-directive_raw $1)"
574 while [[ ${directive} == *%\(*\)* ]]; do
575 subdname=${directive/*%\(}
576 subdname=${subdname/\)*}
577 subdirective="$(_gcc-specs-directive_raw ${subdname})"
578 directive="${directive//\%(${subdname})/${subdirective}}"
579 done
580 echo "${directive}"
581 return 0
582}
583
584# Returns true if gcc sets relro
585gcc-specs-relro() {
586 local directive
587 directive=$(gcc-specs-directive link_command)
588 [[ "${directive/\{!norelro:}" != "${directive}" ]]
589}
590# Returns true if gcc sets now
591gcc-specs-now() {
592 local directive
593 directive=$(gcc-specs-directive link_command)
594 [[ "${directive/\{!nonow:}" != "${directive}" ]]
595}
596# Returns true if gcc builds PIEs
597gcc-specs-pie() {
598 local directive
599 directive=$(gcc-specs-directive cc1)
600 [[ "${directive/\{!nopie:}" != "${directive}" ]]
601}
602# Returns true if gcc builds with the stack protector
603gcc-specs-ssp() {
604 local directive
605 directive=$(gcc-specs-directive cc1)
606 [[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
607}
608# Returns true if gcc upgrades fstack-protector to fstack-protector-all
609gcc-specs-ssp-to-all() {
610 local directive
611 directive=$(gcc-specs-directive cc1)
612 [[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
613}
614# Returns true if gcc builds with fno-strict-overflow
615gcc-specs-nostrict() {
616 local directive
617 directive=$(gcc-specs-directive cc1)
618 [[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
619}
620# Returns true if gcc builds with fstack-check
621gcc-specs-stack-check() {
622 local directive
623 directive=$(gcc-specs-directive cc1)
624 [[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
625}
626
627
628# @FUNCTION: gen_usr_ldscript
629# @USAGE: [-a] <list of libs to create linker scripts for>
630# @DESCRIPTION:
631# This function generate linker scripts in /usr/lib for dynamic
632# libs in /lib. This is to fix linking problems when you have
633# the .so in /lib, and the .a in /usr/lib. What happens is that
634# in some cases when linking dynamic, the .a in /usr/lib is used
635# instead of the .so in /lib due to gcc/libtool tweaking ld's
636# library search path. This causes many builds to fail.
637# See bug #4411 for more info.
638#
639# Note that you should in general use the unversioned name of
640# the library (libfoo.so), as ldconfig should usually update it
641# correctly to point to the latest version of the library present.
642gen_usr_ldscript() {
643 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
644 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
645
646 tc-is-static-only && return
647
648 # Eventually we'd like to get rid of this func completely #417451
649 case ${CTARGET:-${CHOST}} in
650 *-darwin*) ;;
651 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
652 use prefix && return 0 ;;
653 *) return 0 ;;
145 esac 654 esac
146}
147 655
148# Returns the version as by `$CC -dumpversion` 656 # Just make sure it exists
149gcc-fullversion() { 657 dodir /usr/${libdir}
150 echo "$($(tc-getCC) -dumpversion)" 658
659 if [[ $1 == "-a" ]] ; then
660 auto=true
661 shift
662 dodir /${libdir}
663 fi
664
665 # OUTPUT_FORMAT gives hints to the linker as to what binary format
666 # is referenced ... makes multilib saner
667 local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
668 if $(tc-getLD) --version | grep -q 'GNU gold' ; then
669 # If they're using gold, manually invoke the old bfd. #487696
670 local d="${T}/bfd-linker"
671 mkdir -p "${d}"
672 ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
673 flags+=( -B"${d}" )
674 fi
675 output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
676 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
677
678 for lib in "$@" ; do
679 local tlib
680 if ${auto} ; then
681 lib="lib${lib}${suffix}"
682 else
683 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
684 # This especially is for AIX where $(get_libname) can return ".a",
685 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
686 [[ -r ${ED}/${libdir}/${lib} ]] || continue
687 #TODO: better die here?
688 fi
689
690 case ${CTARGET:-${CHOST}} in
691 *-darwin*)
692 if ${auto} ; then
693 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
694 else
695 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
696 fi
697 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
698 tlib=${tlib##*/}
699
700 if ${auto} ; then
701 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
702 # some install_names are funky: they encode a version
703 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
704 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
705 fi
706 rm -f "${ED}"/${libdir}/${lib}
707 fi
708
709 # Mach-O files have an id, which is like a soname, it tells how
710 # another object linking against this lib should reference it.
711 # Since we moved the lib from usr/lib into lib this reference is
712 # wrong. Hence, we update it here. We don't configure with
713 # libdir=/lib because that messes up libtool files.
714 # Make sure we don't lose the specific version, so just modify the
715 # existing install_name
716 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
717 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
718 local nowrite=yes
719 fi
720 install_name_tool \
721 -id "${EPREFIX}"/${libdir}/${tlib} \
722 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
723 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
724 # Now as we don't use GNU binutils and our linker doesn't
725 # understand linker scripts, just create a symlink.
726 pushd "${ED}/usr/${libdir}" > /dev/null
727 ln -snf "../../${libdir}/${tlib}" "${lib}"
728 popd > /dev/null
729 ;;
730 *)
731 if ${auto} ; then
732 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
733 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
734 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
735 # some SONAMEs are funky: they encode a version before the .so
736 if [[ ${tlib} != ${lib}* ]] ; then
737 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
738 fi
739 rm -f "${ED}"/${libdir}/${lib}
740 else
741 tlib=${lib}
742 fi
743 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
744 /* GNU ld script
745 Since Gentoo has critical dynamic libraries in /lib, and the static versions
746 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
747 run into linking problems. This "fake" dynamic lib is a linker script that
748 redirects the linker to the real lib. And yes, this works in the cross-
749 compiling scenario as the sysroot-ed linker will prepend the real path.
750
751 See bug http://bugs.gentoo.org/4411 for more info.
752 */
753 ${output_format}
754 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
755 END_LDSCRIPT
756 ;;
757 esac
758 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
759 done
151} 760}
152# Returns the version, but only the <major>.<minor> 761
153gcc-version() { 762fi
154 echo "$(gcc-fullversion | cut -f1,2 -d.)"
155}
156# Returns the Major version
157gcc-major-version() {
158 echo "$(gcc-version | cut -f1 -d.)"
159}
160# Returns the Minor version
161gcc-minor-version() {
162 echo "$(gcc-version | cut -f2 -d.)"
163}
164# Returns the Micro version
165gcc-micro-version() {
166 echo "$(gcc-fullversion | cut -f3 -d.)"
167}

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