/[gentoo-x86]/eclass/toolchain-funcs.eclass
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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2012 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 1.22 2005/01/11 14:49:02 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.117 2012/09/15 16:16:53 zmedico 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
10ECLASS=toolchain-funcs 16if [[ ${___ECLASS_ONCE_TOOLCHAIN_FUNCS} != "recur -_+^+_- spank" ]] ; then
11INHERITED="$INHERITED $ECLASS" 17___ECLASS_ONCE_TOOLCHAIN_FUNCS="recur -_+^+_- spank"
12 18
13DESCRIPTION="Based on the ${ECLASS} eclass" 19inherit multilib
14 20
21# tc-getPROG <VAR [search vars]> <default> [tuple]
15tc-getPROG() { 22_tc-getPROG() {
16 local var=$1 23 local tuple=$1
24 local v var vars=$2
17 local prog=$2 25 local prog=$3
18 26
27 var=${vars%% *}
28 for v in ${vars} ; do
19 if [[ -n ${!var} ]] ; then 29 if [[ -n ${!v} ]] ; then
30 export ${var}="${!v}"
20 echo "${!var}" 31 echo "${!v}"
21 return 0 32 return 0
22 fi 33 fi
34 done
23 35
24 if [[ -n ${CHOST} ]] ; then 36 local search=
25 local search=$(type -p "${CHOST}-${prog}") 37 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
38 [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
26 [[ -n ${search} ]] && prog=${search##*/} 39 [[ -n ${search} ]] && prog=${search##*/}
27 fi
28 40
29 export ${var}=${prog} 41 export ${var}=${prog}
30 echo "${!var}" 42 echo "${!var}"
31} 43}
44tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
45tc-getPROG() { _tc-getPROG CHOST "$@"; }
32 46
33# Returns the name of the archiver 47# @FUNCTION: tc-getAR
48# @USAGE: [toolchain prefix]
49# @RETURN: name of the archiver
34tc-getAR() { tc-getPROG AR ar; } 50tc-getAR() { tc-getPROG AR ar "$@"; }
35# Returns the name of the assembler 51# @FUNCTION: tc-getAS
52# @USAGE: [toolchain prefix]
53# @RETURN: name of the assembler
36tc-getAS() { tc-getPROG AS as; } 54tc-getAS() { tc-getPROG AS as "$@"; }
55# @FUNCTION: tc-getCC
56# @USAGE: [toolchain prefix]
37# Returns the name of the C compiler 57# @RETURN: name of the C compiler
38tc-getCC() { tc-getPROG CC gcc; } 58tc-getCC() { tc-getPROG CC gcc "$@"; }
59# @FUNCTION: tc-getCPP
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the C preprocessor
62tc-getCPP() { tc-getPROG CPP cpp "$@"; }
63# @FUNCTION: tc-getCXX
64# @USAGE: [toolchain prefix]
39# Returns the name of the C++ compiler 65# @RETURN: name of the C++ compiler
40tc-getCXX() { tc-getPROG CXX g++; } 66tc-getCXX() { tc-getPROG CXX g++ "$@"; }
41# Returns the name of the linker 67# @FUNCTION: tc-getLD
68# @USAGE: [toolchain prefix]
69# @RETURN: name of the linker
42tc-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]
43# Returns the name of the symbol/object thingy 77# @RETURN: name of the symbol/object thingy
44tc-getNM() { tc-getPROG NM nm; } 78tc-getNM() { tc-getPROG NM nm "$@"; }
79# @FUNCTION: tc-getRANLIB
80# @USAGE: [toolchain prefix]
45# Returns the name of the archiver indexer 81# @RETURN: name of the archiver indexer
46tc-getRANLIB() { tc-getPROG RANLIB ranlib; } 82tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
47# 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 "$@"; }
87# @FUNCTION: tc-getF77
88# @USAGE: [toolchain prefix]
89# @RETURN: name of the Fortran 77 compiler
48tc-getF77() { tc-getPROG F77 f77; } 90tc-getF77() { tc-getPROG F77 gfortran "$@"; }
91# @FUNCTION: tc-getFC
92# @USAGE: [toolchain prefix]
93# @RETURN: name of the Fortran 90 compiler
94tc-getFC() { tc-getPROG FC gfortran "$@"; }
95# @FUNCTION: tc-getGCJ
96# @USAGE: [toolchain prefix]
49# Returns the name of the java compiler 97# @RETURN: name of the java compiler
50tc-getGCJ() { tc-getPROG GCJ gcj; } 98tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
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 "$@"; }
51 111
52# Returns the name of the C compiler for build 112# @FUNCTION: tc-getBUILD_AR
53tc-getBUILD_CC() { 113# @USAGE: [toolchain prefix]
54 if [[ -n ${CC_FOR_BUILD} ]] ; then 114# @RETURN: name of the archiver for building binaries to run on the build machine
55 export BUILD_CC=${CC_FOR_BUILD} 115tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
56 echo "${CC_FOR_BUILD}" 116# @FUNCTION: tc-getBUILD_AS
57 return 0 117# @USAGE: [toolchain prefix]
58 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 "$@"; }
152# @FUNCTION: tc-getBUILD_PKG_CONFIG
153# @USAGE: [toolchain prefix]
154# @RETURN: name of the pkg-config tool for building binaries to run on the build machine
155tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
59 156
60 local search= 157# @FUNCTION: tc-export
61 if [[ -n ${CBUILD} ]] ; then 158# @USAGE: <list of toolchain variables>
62 search=$(type -p ${CBUILD}-gcc) 159# @DESCRIPTION:
63 search=${search##*/}
64 else
65 search=gcc
66 fi
67
68 export BUILD_CC=${search}
69 echo "${search}"
70}
71
72# Quick way to export a bunch of vars at once 160# Quick way to export a bunch of compiler vars at once.
73tc-export() { 161tc-export() {
74 local var 162 local var
75 for var in "$@" ; do 163 for var in "$@" ; do
164 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
76 eval tc-get${var} 165 eval tc-get${var} > /dev/null
77 done 166 done
78} 167}
79 168
80# 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
81tc-is-cross-compiler() { 171tc-is-cross-compiler() {
82 if [[ -n ${CBUILD} ]] ; then
83 return $([[ ${CBUILD} != ${CHOST} ]]) 172 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
173}
174
175# @FUNCTION: tc-is-softfloat
176# @DESCRIPTION:
177# See if this toolchain is a softfloat based one.
178# @CODE
179# The possible return values:
180# - only: the target is always softfloat (never had fpu)
181# - yes: the target should support softfloat
182# - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
183# - no: the target doesn't support softfloat
184# @CODE
185# This allows us to react differently where packages accept
186# softfloat flags in the case where support is optional, but
187# rejects softfloat flags where the target always lacks an fpu.
188tc-is-softfloat() {
189 local CTARGET=${CTARGET:-${CHOST}}
190 case ${CTARGET} in
191 bfin*|h8300*)
192 echo "only" ;;
193 *)
194 if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then
195 echo "yes"
196 elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
197 echo "softfp"
198 else
199 echo "no"
84 fi 200 fi
85 return 1 201 ;;
202 esac
86} 203}
87 204
205# @FUNCTION: tc-is-static-only
206# @DESCRIPTION:
207# Return shell true if the target does not support shared libs, shell false
208# otherwise.
209tc-is-static-only() {
210 local host=${CTARGET:-${CHOST}}
88 211
212 # *MiNT doesn't have shared libraries, only platform so far
213 return $([[ ${host} == *-mint* ]])
214}
215
216# @FUNCTION: tc-export_build_env
217# @USAGE: [compiler variables]
218# @DESCRIPTION:
219# Export common build related compiler settings.
220tc-export_build_env() {
221 tc-export "$@"
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
229# @FUNCTION: tc-env_build
230# @USAGE: <command> [command args]
231# @INTERNAL
232# @DESCRIPTION:
233# Setup the compile environment to the build tools and then execute the
234# specified command. We use tc-getBUILD_XX here so that we work with
235# all of the semi-[non-]standard env vars like $BUILD_CC which often
236# the target build system does not check.
237tc-env_build() {
238 tc-export_build_env
239 CFLAGS=${BUILD_CFLAGS} \
240 CXXFLAGS=${BUILD_CXXFLAGS} \
241 CPPFLAGS=${BUILD_CPPFLAGS} \
242 LDFLAGS=${BUILD_LDFLAGS} \
243 AR=$(tc-getBUILD_AR) \
244 AS=$(tc-getBUILD_AS) \
245 CC=$(tc-getBUILD_CC) \
246 CPP=$(tc-getBUILD_CPP) \
247 CXX=$(tc-getBUILD_CXX) \
248 LD=$(tc-getBUILD_LD) \
249 NM=$(tc-getBUILD_NM) \
250 PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
251 RANLIB=$(tc-getBUILD_RANLIB) \
252 "$@"
253}
254
255# @FUNCTION: econf_build
256# @USAGE: [econf flags]
257# @DESCRIPTION:
258# Sometimes we need to locally build up some tools to run on CBUILD because
259# the package has helper utils which are compiled+executed when compiling.
260# This won't work when cross-compiling as the CHOST is set to a target which
261# we cannot natively execute.
262#
263# For example, the python package will build up a local python binary using
264# a portable build system (configure+make), but then use that binary to run
265# local python scripts to build up other components of the overall python.
266# We cannot rely on the python binary in $PATH as that often times will be
267# a different version, or not even installed in the first place. Instead,
268# we compile the code in a different directory to run on CBUILD, and then
269# use that binary when compiling the main package to run on CHOST.
270#
271# For example, with newer EAPIs, you'd do something like:
272# @CODE
273# src_configure() {
274# ECONF_SOURCE=${S}
275# if tc-is-cross-compiler ; then
276# mkdir "${WORKDIR}"/${CBUILD}
277# pushd "${WORKDIR}"/${CBUILD} >/dev/null
278# econf_build --disable-some-unused-stuff
279# popd >/dev/null
280# fi
281# ... normal build paths ...
282# }
283# src_compile() {
284# if tc-is-cross-compiler ; then
285# pushd "${WORKDIR}"/${CBUILD} >/dev/null
286# emake one-or-two-build-tools
287# ln/mv build-tools to normal build paths in ${S}/
288# popd >/dev/null
289# fi
290# ... normal build paths ...
291# }
292# @CODE
293econf_build() {
294 tc-env_build econf --build=${CBUILD:-${CHOST}} "$@"
295}
296
297# @FUNCTION: tc-has-openmp
298# @USAGE: [toolchain prefix]
299# @DESCRIPTION:
300# See if the toolchain supports OpenMP.
301tc-has-openmp() {
302 local base="${T}/test-tc-openmp"
303 cat <<-EOF > "${base}.c"
304 #include <omp.h>
305 int main() {
306 int nthreads, tid, ret = 0;
307 #pragma omp parallel private(nthreads, tid)
308 {
309 tid = omp_get_thread_num();
310 nthreads = omp_get_num_threads(); ret += tid + nthreads;
311 }
312 return ret;
313 }
314 EOF
315 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
316 local ret=$?
317 rm -f "${base}"*
318 return ${ret}
319}
320
321# @FUNCTION: tc-has-tls
322# @USAGE: [-s|-c|-l] [toolchain prefix]
323# @DESCRIPTION:
324# See if the toolchain supports thread local storage (TLS). Use -s to test the
325# compiler, -c to also test the assembler, and -l to also test the C library
326# (the default).
327tc-has-tls() {
328 local base="${T}/test-tc-tls"
329 cat <<-EOF > "${base}.c"
330 int foo(int *i) {
331 static __thread int j = 0;
332 return *i ? j : *i;
333 }
334 EOF
335 local flags
336 case $1 in
337 -s) flags="-S";;
338 -c) flags="-c";;
339 -l) ;;
340 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
341 esac
342 : ${flags:=-fPIC -shared -Wl,-z,defs}
343 [[ $1 == -* ]] && shift
344 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
345 local ret=$?
346 rm -f "${base}"*
347 return ${ret}
348}
349
350
89# Parse information from CBUILD/CHOST/CTARGET rather than 351# Parse information from CBUILD/CHOST/CTARGET rather than
90# use external variables from the profile. 352# use external variables from the profile.
91tc-ninja_magic_to_arch() { 353tc-ninja_magic_to_arch() {
92ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } 354ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
93 355
94 local type=$1 356 local type=$1
95 local host=$2 357 local host=$2
96 [[ -z ${host} ]] && arg=${CHOST} 358 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
97 359
98 case ${host} in 360 case ${host} in
361 aarch64*) ninj aarch64 arm;;
99 alpha*) echo alpha;; 362 alpha*) echo alpha;;
100 x86_64*) ninj x86_64 amd64;;
101 arm*) echo arm;; 363 arm*) echo arm;;
364 avr*) ninj avr32 avr;;
365 bfin*) ninj blackfin bfin;;
366 cris*) echo cris;;
102 hppa*) ninj parisc hppa;; 367 hppa*) ninj parisc hppa;;
368 i?86*)
369 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
370 # trees have been unified into 'x86'.
371 # FreeBSD still uses i386
372 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
373 echo i386
374 else
375 echo x86
376 fi
377 ;;
103 ia64*) echo ia64;; 378 ia64*) echo ia64;;
379 m68*) echo m68k;;
104 mips*) echo mips;; 380 mips*) echo mips;;
105 powerpc64*) echo ppc64;; 381 nios2*) echo nios2;;
106 powerpc*) echo ppc;; 382 nios*) echo nios;;
107 sparc64*) ninj sparc64 sparc;; 383 powerpc*)
108 sparc*) echo sparc;; 384 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
385 # have been unified into simply 'powerpc', but until 2.6.16,
386 # ppc32 is still using ARCH="ppc" as default
387 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
388 echo powerpc
389 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
390 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
391 echo powerpc
392 else
393 echo ppc
394 fi
395 elif [[ ${host} == powerpc64* ]] ; then
396 echo ppc64
397 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
398 ninj ppc64 ppc
399 else
400 echo ppc
401 fi
402 ;;
109 s390*) echo s390;; 403 s390*) echo s390;;
110 sh64*) ninj sh64 sh;; 404 sh64*) ninj sh64 sh;;
111 sh*) echo sh;; 405 sh*) echo sh;;
112 i?86*) ninj i386 x86;; 406 sparc64*) ninj sparc64 sparc;;
407 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
408 && ninj sparc64 sparc \
409 || echo sparc
410 ;;
411 vax*) echo vax;;
412 x86_64*freebsd*) echo amd64;;
413 x86_64*)
414 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
415 # trees have been unified into 'x86'.
416 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
417 echo x86
418 else
419 ninj x86_64 amd64
420 fi
421 ;;
422
423 # since our usage of tc-arch is largely concerned with
424 # normalizing inputs for testing ${CTARGET}, let's filter
425 # other cross targets (mingw and such) into the unknown.
426 *) echo unknown;;
427 esac
428}
429# @FUNCTION: tc-arch-kernel
430# @USAGE: [toolchain prefix]
431# @RETURN: name of the kernel arch according to the compiler target
432tc-arch-kernel() {
433 tc-ninja_magic_to_arch kern "$@"
434}
435# @FUNCTION: tc-arch
436# @USAGE: [toolchain prefix]
437# @RETURN: name of the portage arch according to the compiler target
438tc-arch() {
439 tc-ninja_magic_to_arch portage "$@"
440}
441
442tc-endian() {
443 local host=$1
444 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
445 host=${host%%-*}
446
447 case ${host} in
448 aarch64*be) echo big;;
449 aarch64) echo little;;
450 alpha*) echo big;;
451 arm*b*) echo big;;
452 arm*) echo little;;
453 cris*) echo little;;
454 hppa*) echo big;;
455 i?86*) echo little;;
456 ia64*) echo little;;
457 m68*) echo big;;
458 mips*l*) echo little;;
459 mips*) echo big;;
460 powerpc*) echo big;;
461 s390*) echo big;;
462 sh*b*) echo big;;
463 sh*) echo little;;
464 sparc*) echo big;;
465 x86_64*) echo little;;
113 *) echo wtf;; 466 *) echo wtf;;
114 esac 467 esac
115} 468}
116tc-arch-kernel() {
117 tc-ninja_magic_to_arch kern $@
118}
119tc-arch() {
120 tc-ninja_magic_to_arch portage $@
121}
122tc-endian() {
123 local host=$1
124 [[ -z ${host} ]] && host=${CHOST}
125 469
126 case ${host} in 470# Internal func. The first argument is the version info to expand.
127 alpha*) echo big;; 471# Query the preprocessor to improve compatibility across different
128 x86_64*) echo little;; 472# compilers rather than maintaining a --version flag matrix. #335943
129 arm*eb-*) echo big;; 473_gcc_fullversion() {
130 arm*) echo little;; 474 local ver="$1"; shift
131 hppa*) echo big;; 475 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
132 ia64*) echo little;; 476 eval echo "$ver"
133 m68k*) echo big;; 477}
134 mips*el-*) echo little;; 478
135 mips*) echo big;; 479# @FUNCTION: gcc-fullversion
136 powerpc*) echo big;; 480# @RETURN: compiler version (major.minor.micro: [3.4.6])
137 sparc*) echo big;; 481gcc-fullversion() {
138 s390*) echo big;; 482 _gcc_fullversion '$1.$2.$3' "$@"
139 sh*el-) echo little;; 483}
140 sh*) echo big;; 484# @FUNCTION: gcc-version
141 i?86*) echo little;; 485# @RETURN: compiler version (major.minor: [3.4].6)
142 *) echo wtf;; 486gcc-version() {
487 _gcc_fullversion '$1.$2' "$@"
488}
489# @FUNCTION: gcc-major-version
490# @RETURN: major compiler version (major: [3].4.6)
491gcc-major-version() {
492 _gcc_fullversion '$1' "$@"
493}
494# @FUNCTION: gcc-minor-version
495# @RETURN: minor compiler version (minor: 3.[4].6)
496gcc-minor-version() {
497 _gcc_fullversion '$2' "$@"
498}
499# @FUNCTION: gcc-micro-version
500# @RETURN: micro compiler version (micro: 3.4.[6])
501gcc-micro-version() {
502 _gcc_fullversion '$3' "$@"
503}
504
505# Returns the installation directory - internal toolchain
506# function for use by _gcc-specs-exists (for flag-o-matic).
507_gcc-install-dir() {
508 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
509 awk '$1=="install:" {print $2}')"
510}
511# Returns true if the indicated specs file exists - internal toolchain
512# function for use by flag-o-matic.
513_gcc-specs-exists() {
514 [[ -f $(_gcc-install-dir)/$1 ]]
515}
516
517# Returns requested gcc specs directive unprocessed - for used by
518# gcc-specs-directive()
519# Note; later specs normally overwrite earlier ones; however if a later
520# spec starts with '+' then it appends.
521# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
522# as "Reading <file>", in order. Strictly speaking, if there's a
523# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
524# the same token anything from 'gcc -dumpspecs' is overridden by
525# the contents of $(gcc_install_dir)/specs so the result is the
526# same either way.
527_gcc-specs-directive_raw() {
528 local cc=$(tc-getCC)
529 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
530 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
531'BEGIN { pspec=""; spec=""; outside=1 }
532$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
533 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
534 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
535 { spec=spec $0 }
536END { print spec }'
537 return 0
538}
539
540# Return the requested gcc specs directive, with all included
541# specs expanded.
542# Note, it does not check for inclusion loops, which cause it
543# to never finish - but such loops are invalid for gcc and we're
544# assuming gcc is operational.
545gcc-specs-directive() {
546 local directive subdname subdirective
547 directive="$(_gcc-specs-directive_raw $1)"
548 while [[ ${directive} == *%\(*\)* ]]; do
549 subdname=${directive/*%\(}
550 subdname=${subdname/\)*}
551 subdirective="$(_gcc-specs-directive_raw ${subdname})"
552 directive="${directive//\%(${subdname})/${subdirective}}"
553 done
554 echo "${directive}"
555 return 0
556}
557
558# Returns true if gcc sets relro
559gcc-specs-relro() {
560 local directive
561 directive=$(gcc-specs-directive link_command)
562 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
563}
564# Returns true if gcc sets now
565gcc-specs-now() {
566 local directive
567 directive=$(gcc-specs-directive link_command)
568 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
569}
570# Returns true if gcc builds PIEs
571gcc-specs-pie() {
572 local directive
573 directive=$(gcc-specs-directive cc1)
574 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
575}
576# Returns true if gcc builds with the stack protector
577gcc-specs-ssp() {
578 local directive
579 directive=$(gcc-specs-directive cc1)
580 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
581}
582# Returns true if gcc upgrades fstack-protector to fstack-protector-all
583gcc-specs-ssp-to-all() {
584 local directive
585 directive=$(gcc-specs-directive cc1)
586 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
587}
588# Returns true if gcc builds with fno-strict-overflow
589gcc-specs-nostrict() {
590 local directive
591 directive=$(gcc-specs-directive cc1)
592 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
593}
594
595
596# @FUNCTION: gen_usr_ldscript
597# @USAGE: [-a] <list of libs to create linker scripts for>
598# @DESCRIPTION:
599# This function generate linker scripts in /usr/lib for dynamic
600# libs in /lib. This is to fix linking problems when you have
601# the .so in /lib, and the .a in /usr/lib. What happens is that
602# in some cases when linking dynamic, the .a in /usr/lib is used
603# instead of the .so in /lib due to gcc/libtool tweaking ld's
604# library search path. This causes many builds to fail.
605# See bug #4411 for more info.
606#
607# Note that you should in general use the unversioned name of
608# the library (libfoo.so), as ldconfig should usually update it
609# correctly to point to the latest version of the library present.
610gen_usr_ldscript() {
611 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
612 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
613
614 tc-is-static-only && return
615
616 # Eventually we'd like to get rid of this func completely #417451
617 case ${CTARGET:-${CHOST}} in
618 *-darwin*) ;;
619 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
620 use prefix && return 0 ;;
621 *) return 0 ;;
143 esac 622 esac
144}
145 623
146# Returns the version as by `$CC -dumpversion` 624 # Just make sure it exists
147gcc-fullversion() { 625 dodir /usr/${libdir}
148 echo "$($(tc-getCC) -dumpversion)" 626
627 if [[ $1 == "-a" ]] ; then
628 auto=true
629 shift
630 dodir /${libdir}
631 fi
632
633 # OUTPUT_FORMAT gives hints to the linker as to what binary format
634 # is referenced ... makes multilib saner
635 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
636 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
637
638 for lib in "$@" ; do
639 local tlib
640 if ${auto} ; then
641 lib="lib${lib}${suffix}"
642 else
643 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
644 # This especially is for AIX where $(get_libname) can return ".a",
645 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
646 [[ -r ${ED}/${libdir}/${lib} ]] || continue
647 #TODO: better die here?
648 fi
649
650 case ${CTARGET:-${CHOST}} in
651 *-darwin*)
652 if ${auto} ; then
653 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
654 else
655 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
656 fi
657 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
658 tlib=${tlib##*/}
659
660 if ${auto} ; then
661 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
662 # some install_names are funky: they encode a version
663 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
664 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
665 fi
666 rm -f "${ED}"/${libdir}/${lib}
667 fi
668
669 # Mach-O files have an id, which is like a soname, it tells how
670 # another object linking against this lib should reference it.
671 # Since we moved the lib from usr/lib into lib this reference is
672 # wrong. Hence, we update it here. We don't configure with
673 # libdir=/lib because that messes up libtool files.
674 # Make sure we don't lose the specific version, so just modify the
675 # existing install_name
676 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
677 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
678 local nowrite=yes
679 fi
680 install_name_tool \
681 -id "${EPREFIX}"/${libdir}/${tlib} \
682 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
683 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
684 # Now as we don't use GNU binutils and our linker doesn't
685 # understand linker scripts, just create a symlink.
686 pushd "${ED}/usr/${libdir}" > /dev/null
687 ln -snf "../../${libdir}/${tlib}" "${lib}"
688 popd > /dev/null
689 ;;
690 *)
691 if ${auto} ; then
692 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
693 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
694 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
695 # some SONAMEs are funky: they encode a version before the .so
696 if [[ ${tlib} != ${lib}* ]] ; then
697 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
698 fi
699 rm -f "${ED}"/${libdir}/${lib}
700 else
701 tlib=${lib}
702 fi
703 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
704 /* GNU ld script
705 Since Gentoo has critical dynamic libraries in /lib, and the static versions
706 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
707 run into linking problems. This "fake" dynamic lib is a linker script that
708 redirects the linker to the real lib. And yes, this works in the cross-
709 compiling scenario as the sysroot-ed linker will prepend the real path.
710
711 See bug http://bugs.gentoo.org/4411 for more info.
712 */
713 ${output_format}
714 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
715 END_LDSCRIPT
716 ;;
717 esac
718 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
719 done
149} 720}
150# Returns the version, but only the <major>.<minor> 721
151gcc-version() { 722fi
152 echo "$(gcc-fullversion | cut -f1,2 -d.)"
153}
154# Returns the Major version
155gcc-major-version() {
156 echo "$(gcc-version | cut -f1 -d.)"
157}
158# Returns the Minor version
159gcc-minor-version() {
160 echo "$(gcc-version | cut -f2 -d.)"
161}
162# Returns the Micro version
163gcc-micro-version() {
164 echo "$(gcc-fullversion | cut -f3 -d.)"
165}

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