/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2014 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 1.132 2015/02/27 06:08:39 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 "$@"; }
87# @FUNCTION: tc-getF77
88# @USAGE: [toolchain prefix]
89# @RETURN: name of the Fortran 77 compiler
50tc-getF77() { tc-getPROG F77 f77; } 90tc-getF77() { tc-getPROG F77 gfortran "$@"; }
91# @FUNCTION: tc-getFC
92# @USAGE: [toolchain prefix]
93# @RETURN: name of the Fortran 90 compiler
94tc-getFC() { tc-getPROG FC gfortran "$@"; }
95# @FUNCTION: tc-getGCJ
96# @USAGE: [toolchain prefix]
51# Returns the name of the java compiler 97# @RETURN: name of the java compiler
52tc-getGCJ() { tc-getPROG GCJ gcj; } 98tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
99# @FUNCTION: tc-getPKG_CONFIG
100# @USAGE: [toolchain prefix]
101# @RETURN: name of the pkg-config tool
102tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
103# @FUNCTION: tc-getRC
104# @USAGE: [toolchain prefix]
105# @RETURN: name of the Windows resource compiler
106tc-getRC() { tc-getPROG RC windres "$@"; }
107# @FUNCTION: tc-getDLLWRAP
108# @USAGE: [toolchain prefix]
109# @RETURN: name of the Windows dllwrap utility
110tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
53 111
54# Returns the name of the C compiler for build 112# @FUNCTION: tc-getBUILD_AR
55tc-getBUILD_CC() { 113# @USAGE: [toolchain prefix]
56 if [[ -n ${CC_FOR_BUILD} ]] ; then 114# @RETURN: name of the archiver for building binaries to run on the build machine
57 export BUILD_CC=${CC_FOR_BUILD} 115tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
58 echo "${CC_FOR_BUILD}" 116# @FUNCTION: tc-getBUILD_AS
59 return 0 117# @USAGE: [toolchain prefix]
60 fi 118# @RETURN: name of the assembler for building binaries to run on the build machine
119tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
120# @FUNCTION: tc-getBUILD_CC
121# @USAGE: [toolchain prefix]
122# @RETURN: name of the C compiler for building binaries to run on the build machine
123tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
124# @FUNCTION: tc-getBUILD_CPP
125# @USAGE: [toolchain prefix]
126# @RETURN: name of the C preprocessor for building binaries to run on the build machine
127tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; }
128# @FUNCTION: tc-getBUILD_CXX
129# @USAGE: [toolchain prefix]
130# @RETURN: name of the C++ compiler for building binaries to run on the build machine
131tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
132# @FUNCTION: tc-getBUILD_LD
133# @USAGE: [toolchain prefix]
134# @RETURN: name of the linker for building binaries to run on the build machine
135tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
136# @FUNCTION: tc-getBUILD_STRIP
137# @USAGE: [toolchain prefix]
138# @RETURN: name of the strip program for building binaries to run on the build machine
139tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
140# @FUNCTION: tc-getBUILD_NM
141# @USAGE: [toolchain prefix]
142# @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
143tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
144# @FUNCTION: tc-getBUILD_RANLIB
145# @USAGE: [toolchain prefix]
146# @RETURN: name of the archiver indexer for building binaries to run on the build machine
147tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
148# @FUNCTION: tc-getBUILD_OBJCOPY
149# @USAGE: [toolchain prefix]
150# @RETURN: name of the object copier for building binaries to run on the build machine
151tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
152# @FUNCTION: tc-getBUILD_PKG_CONFIG
153# @USAGE: [toolchain prefix]
154# @RETURN: name of the pkg-config tool for building binaries to run on the build machine
155tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
61 156
62 local search= 157# @FUNCTION: tc-export
63 if [[ -n ${CBUILD} ]] ; then 158# @USAGE: <list of toolchain variables>
64 search=$(type -p "${CBUILD}-gcc") 159# @DESCRIPTION:
65 search=${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 160# Quick way to export a bunch of compiler vars at once.
75tc-export() { 161tc-export() {
76 local var 162 local var
77 for var in "$@" ; do 163 for var in "$@" ; do
164 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
78 eval tc-get${var} 165 eval tc-get${var} > /dev/null
79 done 166 done
80} 167}
81 168
82# A simple way to see if we're using a cross-compiler ... 169# @FUNCTION: tc-is-cross-compiler
170# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
83tc-is-cross-compiler() { 171tc-is-cross-compiler() {
84 if [[ -n ${CBUILD} ]] ; then 172 [[ ${CBUILD:-${CHOST}} != ${CHOST} ]]
85 return $([[ ${CBUILD} != ${CHOST} ]]) 173}
174
175# @FUNCTION: tc-is-softfloat
176# @DESCRIPTION:
177# See if this toolchain is a softfloat based one.
178# @CODE
179# The possible return values:
180# - only: the target is always softfloat (never had fpu)
181# - yes: the target should support softfloat
182# - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
183# - no: the target doesn't support softfloat
184# @CODE
185# This allows us to react differently where packages accept
186# softfloat flags in the case where support is optional, but
187# rejects softfloat flags where the target always lacks an fpu.
188tc-is-softfloat() {
189 local CTARGET=${CTARGET:-${CHOST}}
190 case ${CTARGET} in
191 bfin*|h8300*)
192 echo "only" ;;
193 *)
194 if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then
195 echo "yes"
196 elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
197 echo "softfp"
198 else
199 echo "no"
86 fi 200 fi
87 return 1 201 ;;
202 esac
88} 203}
89 204
205# @FUNCTION: tc-is-static-only
206# @DESCRIPTION:
207# Return shell true if the target does not support shared libs, shell false
208# otherwise.
209tc-is-static-only() {
210 local host=${CTARGET:-${CHOST}}
90 211
212 # *MiNT doesn't have shared libraries, only platform so far
213 [[ ${host} == *-mint* ]]
214}
215
216# @FUNCTION: tc-export_build_env
217# @USAGE: [compiler variables]
218# @DESCRIPTION:
219# Export common build related compiler settings.
220tc-export_build_env() {
221 tc-export "$@"
222 : ${BUILD_CFLAGS:=-O1 -pipe}
223 : ${BUILD_CXXFLAGS:=-O1 -pipe}
224 : ${BUILD_CPPFLAGS:=}
225 : ${BUILD_LDFLAGS:=}
226 export BUILD_{C,CXX,CPP,LD}FLAGS
227
228 # Some packages use XXX_FOR_BUILD.
229 local v
230 for v in BUILD_{C,CXX,CPP,LD}FLAGS ; do
231 export ${v#BUILD_}_FOR_BUILD="${!v}"
232 done
233}
234
235# @FUNCTION: tc-env_build
236# @USAGE: <command> [command args]
237# @INTERNAL
238# @DESCRIPTION:
239# Setup the compile environment to the build tools and then execute the
240# specified command. We use tc-getBUILD_XX here so that we work with
241# all of the semi-[non-]standard env vars like $BUILD_CC which often
242# the target build system does not check.
243tc-env_build() {
244 tc-export_build_env
245 CFLAGS=${BUILD_CFLAGS} \
246 CXXFLAGS=${BUILD_CXXFLAGS} \
247 CPPFLAGS=${BUILD_CPPFLAGS} \
248 LDFLAGS=${BUILD_LDFLAGS} \
249 AR=$(tc-getBUILD_AR) \
250 AS=$(tc-getBUILD_AS) \
251 CC=$(tc-getBUILD_CC) \
252 CPP=$(tc-getBUILD_CPP) \
253 CXX=$(tc-getBUILD_CXX) \
254 LD=$(tc-getBUILD_LD) \
255 NM=$(tc-getBUILD_NM) \
256 PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
257 RANLIB=$(tc-getBUILD_RANLIB) \
258 "$@"
259}
260
261# @FUNCTION: econf_build
262# @USAGE: [econf flags]
263# @DESCRIPTION:
264# Sometimes we need to locally build up some tools to run on CBUILD because
265# the package has helper utils which are compiled+executed when compiling.
266# This won't work when cross-compiling as the CHOST is set to a target which
267# we cannot natively execute.
268#
269# For example, the python package will build up a local python binary using
270# a portable build system (configure+make), but then use that binary to run
271# local python scripts to build up other components of the overall python.
272# We cannot rely on the python binary in $PATH as that often times will be
273# a different version, or not even installed in the first place. Instead,
274# we compile the code in a different directory to run on CBUILD, and then
275# use that binary when compiling the main package to run on CHOST.
276#
277# For example, with newer EAPIs, you'd do something like:
278# @CODE
279# src_configure() {
280# ECONF_SOURCE=${S}
281# if tc-is-cross-compiler ; then
282# mkdir "${WORKDIR}"/${CBUILD}
283# pushd "${WORKDIR}"/${CBUILD} >/dev/null
284# econf_build --disable-some-unused-stuff
285# popd >/dev/null
286# fi
287# ... normal build paths ...
288# }
289# src_compile() {
290# if tc-is-cross-compiler ; then
291# pushd "${WORKDIR}"/${CBUILD} >/dev/null
292# emake one-or-two-build-tools
293# ln/mv build-tools to normal build paths in ${S}/
294# popd >/dev/null
295# fi
296# ... normal build paths ...
297# }
298# @CODE
299econf_build() {
300 tc-env_build econf --build=${CBUILD:-${CHOST}} "$@"
301}
302
303# @FUNCTION: tc-has-openmp
304# @USAGE: [toolchain prefix]
305# @DESCRIPTION:
306# See if the toolchain supports OpenMP.
307tc-has-openmp() {
308 local base="${T}/test-tc-openmp"
309 cat <<-EOF > "${base}.c"
310 #include <omp.h>
311 int main() {
312 int nthreads, tid, ret = 0;
313 #pragma omp parallel private(nthreads, tid)
314 {
315 tid = omp_get_thread_num();
316 nthreads = omp_get_num_threads(); ret += tid + nthreads;
317 }
318 return ret;
319 }
320 EOF
321 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
322 local ret=$?
323 rm -f "${base}"*
324 return ${ret}
325}
326
327# @FUNCTION: tc-has-tls
328# @USAGE: [-s|-c|-l] [toolchain prefix]
329# @DESCRIPTION:
330# See if the toolchain supports thread local storage (TLS). Use -s to test the
331# compiler, -c to also test the assembler, and -l to also test the C library
332# (the default).
333tc-has-tls() {
334 local base="${T}/test-tc-tls"
335 cat <<-EOF > "${base}.c"
336 int foo(int *i) {
337 static __thread int j = 0;
338 return *i ? j : *i;
339 }
340 EOF
341 local flags
342 case $1 in
343 -s) flags="-S";;
344 -c) flags="-c";;
345 -l) ;;
346 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
347 esac
348 : ${flags:=-fPIC -shared -Wl,-z,defs}
349 [[ $1 == -* ]] && shift
350 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
351 local ret=$?
352 rm -f "${base}"*
353 return ${ret}
354}
355
356
91# Parse information from CBUILD/CHOST/CTARGET rather than 357# Parse information from CBUILD/CHOST/CTARGET rather than
92# use external variables from the profile. 358# use external variables from the profile.
93tc-ninja_magic_to_arch() { 359tc-ninja_magic_to_arch() {
94ninj() { [[ ${type} = "kern" ]] && echo $1 || echo $2 ; } 360ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
95 361
96 local type=$1 362 local type=$1
97 local host=$2 363 local host=$2
98 [[ -z ${host} ]] && arg=${CHOST} 364 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
365
366 local KV=${KV:-${KV_FULL}}
367 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
368 ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
99 369
100 case ${host} in 370 case ${host} in
371 aarch64*) echo arm64;;
101 alpha*) echo alpha;; 372 alpha*) echo alpha;;
102 x86_64*) ninj x86_64 amd64;;
103 arm*) echo arm;; 373 arm*) echo arm;;
374 avr*) ninj avr32 avr;;
375 bfin*) ninj blackfin bfin;;
376 c6x*) echo c6x;;
377 cris*) echo cris;;
378 frv*) echo frv;;
379 hexagon*) echo hexagon;;
104 hppa*) ninj parisc hppa;; 380 hppa*) ninj parisc hppa;;
381 i?86*)
382 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
383 # trees have been unified into 'x86'.
384 # FreeBSD still uses i386
385 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
386 echo i386
387 else
388 echo x86
389 fi
390 ;;
105 ia64*) echo ia64;; 391 ia64*) echo ia64;;
392 m68*) echo m68k;;
393 metag*) echo metag;;
394 microblaze*) echo microblaze;;
106 mips*) echo mips;; 395 mips*) echo mips;;
107 powerpc64*) echo ppc64;; 396 nios2*) echo nios2;;
108 powerpc*) echo ppc;; 397 nios*) echo nios;;
109 sparc64*) ninj sparc64 sparc;; 398 or32*) echo openrisc;;
110 sparc*) echo sparc;; 399 powerpc*)
400 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
401 # have been unified into simply 'powerpc', but until 2.6.16,
402 # ppc32 is still using ARCH="ppc" as default
403 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
404 echo powerpc
405 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
406 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
407 echo powerpc
408 else
409 echo ppc
410 fi
411 elif [[ ${host} == powerpc64* ]] ; then
412 echo ppc64
413 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
414 ninj ppc64 ppc
415 else
416 echo ppc
417 fi
418 ;;
419 riscv*) echo riscv;;
111 s390*) echo s390;; 420 s390*) echo s390;;
421 score*) echo score;;
112 sh64*) ninj sh64 sh;; 422 sh64*) ninj sh64 sh;;
113 sh*) echo sh;; 423 sh*) echo sh;;
424 sparc64*) ninj sparc64 sparc;;
425 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
426 && ninj sparc64 sparc \
427 || echo sparc
428 ;;
429 tile*) echo tile;;
430 vax*) echo vax;;
431 x86_64*freebsd*) echo amd64;;
432 x86_64*)
433 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
434 # trees have been unified into 'x86'.
435 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
436 echo x86
437 else
438 ninj x86_64 amd64
439 fi
440 ;;
441 xtensa*) echo xtensa;;
442
443 # since our usage of tc-arch is largely concerned with
444 # normalizing inputs for testing ${CTARGET}, let's filter
445 # other cross targets (mingw and such) into the unknown.
446 *) echo unknown;;
447 esac
448}
449# @FUNCTION: tc-arch-kernel
450# @USAGE: [toolchain prefix]
451# @RETURN: name of the kernel arch according to the compiler target
452tc-arch-kernel() {
453 tc-ninja_magic_to_arch kern "$@"
454}
455# @FUNCTION: tc-arch
456# @USAGE: [toolchain prefix]
457# @RETURN: name of the portage arch according to the compiler target
458tc-arch() {
459 tc-ninja_magic_to_arch portage "$@"
460}
461
462tc-endian() {
463 local host=$1
464 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
465 host=${host%%-*}
466
467 case ${host} in
468 aarch64*be) echo big;;
469 aarch64) echo little;;
470 alpha*) echo big;;
471 arm*b*) echo big;;
472 arm*) echo little;;
473 cris*) echo little;;
474 hppa*) echo big;;
114 i?86*) echo x86;; 475 i?86*) echo little;;
476 ia64*) echo little;;
477 m68*) echo big;;
478 mips*l*) echo little;;
479 mips*) echo big;;
480 powerpc*le) echo little;;
481 powerpc*) echo big;;
482 s390*) echo big;;
483 sh*b*) echo big;;
484 sh*) echo little;;
485 sparc*) echo big;;
486 x86_64*) echo little;;
115 *) echo wtf;; 487 *) echo wtf;;
116 esac 488 esac
117} 489}
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}
127 490
128 case ${host} in 491# Internal func. The first argument is the version info to expand.
129 alpha*) echo big;; 492# Query the preprocessor to improve compatibility across different
130 x86_64*) echo little;; 493# compilers rather than maintaining a --version flag matrix. #335943
131 arm*eb-*) echo big;; 494_gcc_fullversion() {
132 arm*) echo little;; 495 local ver="$1"; shift
133 hppa*) echo big;; 496 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
134 ia64*) echo little;; 497 eval echo "$ver"
135 m68k*) echo big;; 498}
136 mips*el-*) echo little;; 499
137 mips*) echo big;; 500# @FUNCTION: gcc-fullversion
138 powerpc*) echo big;; 501# @RETURN: compiler version (major.minor.micro: [3.4.6])
139 sparc*) echo big;; 502gcc-fullversion() {
140 s390*) echo big;; 503 _gcc_fullversion '$1.$2.$3' "$@"
141 sh*el-) echo little;; 504}
142 sh*) echo big;; 505# @FUNCTION: gcc-version
143 i?86*) echo little;; 506# @RETURN: compiler version (major.minor: [3.4].6)
144 *) echo wtf;; 507gcc-version() {
508 _gcc_fullversion '$1.$2' "$@"
509}
510# @FUNCTION: gcc-major-version
511# @RETURN: major compiler version (major: [3].4.6)
512gcc-major-version() {
513 _gcc_fullversion '$1' "$@"
514}
515# @FUNCTION: gcc-minor-version
516# @RETURN: minor compiler version (minor: 3.[4].6)
517gcc-minor-version() {
518 _gcc_fullversion '$2' "$@"
519}
520# @FUNCTION: gcc-micro-version
521# @RETURN: micro compiler version (micro: 3.4.[6])
522gcc-micro-version() {
523 _gcc_fullversion '$3' "$@"
524}
525
526# Returns the installation directory - internal toolchain
527# function for use by _gcc-specs-exists (for flag-o-matic).
528_gcc-install-dir() {
529 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
530 awk '$1=="install:" {print $2}')"
531}
532# Returns true if the indicated specs file exists - internal toolchain
533# function for use by flag-o-matic.
534_gcc-specs-exists() {
535 [[ -f $(_gcc-install-dir)/$1 ]]
536}
537
538# Returns requested gcc specs directive unprocessed - for used by
539# gcc-specs-directive()
540# Note; later specs normally overwrite earlier ones; however if a later
541# spec starts with '+' then it appends.
542# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
543# as "Reading <file>", in order. Strictly speaking, if there's a
544# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
545# the same token anything from 'gcc -dumpspecs' is overridden by
546# the contents of $(gcc_install_dir)/specs so the result is the
547# same either way.
548_gcc-specs-directive_raw() {
549 local cc=$(tc-getCC)
550 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
551 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
552'BEGIN { pspec=""; spec=""; outside=1 }
553$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
554 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
555 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
556 { spec=spec $0 }
557END { print spec }'
558 return 0
559}
560
561# Return the requested gcc specs directive, with all included
562# specs expanded.
563# Note, it does not check for inclusion loops, which cause it
564# to never finish - but such loops are invalid for gcc and we're
565# assuming gcc is operational.
566gcc-specs-directive() {
567 local directive subdname subdirective
568 directive="$(_gcc-specs-directive_raw $1)"
569 while [[ ${directive} == *%\(*\)* ]]; do
570 subdname=${directive/*%\(}
571 subdname=${subdname/\)*}
572 subdirective="$(_gcc-specs-directive_raw ${subdname})"
573 directive="${directive//\%(${subdname})/${subdirective}}"
574 done
575 echo "${directive}"
576 return 0
577}
578
579# Returns true if gcc sets relro
580gcc-specs-relro() {
581 local directive
582 directive=$(gcc-specs-directive link_command)
583 [[ "${directive/\{!norelro:}" != "${directive}" ]]
584}
585# Returns true if gcc sets now
586gcc-specs-now() {
587 local directive
588 directive=$(gcc-specs-directive link_command)
589 [[ "${directive/\{!nonow:}" != "${directive}" ]]
590}
591# Returns true if gcc builds PIEs
592gcc-specs-pie() {
593 local directive
594 directive=$(gcc-specs-directive cc1)
595 [[ "${directive/\{!nopie:}" != "${directive}" ]]
596}
597# Returns true if gcc builds with the stack protector
598gcc-specs-ssp() {
599 local directive
600 directive=$(gcc-specs-directive cc1)
601 [[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
602}
603# Returns true if gcc upgrades fstack-protector to fstack-protector-all
604gcc-specs-ssp-to-all() {
605 local directive
606 directive=$(gcc-specs-directive cc1)
607 [[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
608}
609# Returns true if gcc builds with fno-strict-overflow
610gcc-specs-nostrict() {
611 local directive
612 directive=$(gcc-specs-directive cc1)
613 [[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
614}
615# Returns true if gcc builds with fstack-check
616gcc-specs-stack-check() {
617 local directive
618 directive=$(gcc-specs-directive cc1)
619 [[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
620}
621
622
623# @FUNCTION: gen_usr_ldscript
624# @USAGE: [-a] <list of libs to create linker scripts for>
625# @DESCRIPTION:
626# This function generate linker scripts in /usr/lib for dynamic
627# libs in /lib. This is to fix linking problems when you have
628# the .so in /lib, and the .a in /usr/lib. What happens is that
629# in some cases when linking dynamic, the .a in /usr/lib is used
630# instead of the .so in /lib due to gcc/libtool tweaking ld's
631# library search path. This causes many builds to fail.
632# See bug #4411 for more info.
633#
634# Note that you should in general use the unversioned name of
635# the library (libfoo.so), as ldconfig should usually update it
636# correctly to point to the latest version of the library present.
637gen_usr_ldscript() {
638 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
639 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
640
641 tc-is-static-only && return
642
643 # Eventually we'd like to get rid of this func completely #417451
644 case ${CTARGET:-${CHOST}} in
645 *-darwin*) ;;
646 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
647 use prefix && return 0 ;;
648 *) return 0 ;;
145 esac 649 esac
146}
147 650
148# Returns the version as by `$CC -dumpversion` 651 # Just make sure it exists
149gcc-fullversion() { 652 dodir /usr/${libdir}
150 echo "$($(tc-getCC) -dumpversion)" 653
654 if [[ $1 == "-a" ]] ; then
655 auto=true
656 shift
657 dodir /${libdir}
658 fi
659
660 # OUTPUT_FORMAT gives hints to the linker as to what binary format
661 # is referenced ... makes multilib saner
662 local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
663 if $(tc-getLD) --version | grep -q 'GNU gold' ; then
664 # If they're using gold, manually invoke the old bfd. #487696
665 local d="${T}/bfd-linker"
666 mkdir -p "${d}"
667 ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
668 flags+=( -B"${d}" )
669 fi
670 output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
671 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
672
673 for lib in "$@" ; do
674 local tlib
675 if ${auto} ; then
676 lib="lib${lib}${suffix}"
677 else
678 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
679 # This especially is for AIX where $(get_libname) can return ".a",
680 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
681 [[ -r ${ED}/${libdir}/${lib} ]] || continue
682 #TODO: better die here?
683 fi
684
685 case ${CTARGET:-${CHOST}} in
686 *-darwin*)
687 if ${auto} ; then
688 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
689 else
690 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
691 fi
692 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
693 tlib=${tlib##*/}
694
695 if ${auto} ; then
696 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
697 # some install_names are funky: they encode a version
698 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
699 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
700 fi
701 rm -f "${ED}"/${libdir}/${lib}
702 fi
703
704 # Mach-O files have an id, which is like a soname, it tells how
705 # another object linking against this lib should reference it.
706 # Since we moved the lib from usr/lib into lib this reference is
707 # wrong. Hence, we update it here. We don't configure with
708 # libdir=/lib because that messes up libtool files.
709 # Make sure we don't lose the specific version, so just modify the
710 # existing install_name
711 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
712 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
713 local nowrite=yes
714 fi
715 install_name_tool \
716 -id "${EPREFIX}"/${libdir}/${tlib} \
717 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
718 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
719 # Now as we don't use GNU binutils and our linker doesn't
720 # understand linker scripts, just create a symlink.
721 pushd "${ED}/usr/${libdir}" > /dev/null
722 ln -snf "../../${libdir}/${tlib}" "${lib}"
723 popd > /dev/null
724 ;;
725 *)
726 if ${auto} ; then
727 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
728 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
729 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
730 # some SONAMEs are funky: they encode a version before the .so
731 if [[ ${tlib} != ${lib}* ]] ; then
732 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
733 fi
734 rm -f "${ED}"/${libdir}/${lib}
735 else
736 tlib=${lib}
737 fi
738 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
739 /* GNU ld script
740 Since Gentoo has critical dynamic libraries in /lib, and the static versions
741 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
742 run into linking problems. This "fake" dynamic lib is a linker script that
743 redirects the linker to the real lib. And yes, this works in the cross-
744 compiling scenario as the sysroot-ed linker will prepend the real path.
745
746 See bug http://bugs.gentoo.org/4411 for more info.
747 */
748 ${output_format}
749 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
750 END_LDSCRIPT
751 ;;
752 esac
753 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
754 done
151} 755}
152# Returns the version, but only the <major>.<minor> 756
153gcc-version() { 757fi
154 echo "$(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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