/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.1.1.1 Revision 1.127
1# Copyright 1999-2005 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 1.1.1.1 2005/11/30 09:59:25 chriswhite Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.127 2014/07/11 08:21:58 ulm 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 "$@"; }
87# @FUNCTION: tc-getF77
88# @USAGE: [toolchain prefix]
89# @RETURN: name of the Fortran 77 compiler
90tc-getF77() { tc-getPROG F77 gfortran "$@"; }
91# @FUNCTION: tc-getFC
92# @USAGE: [toolchain prefix]
93# @RETURN: name of the Fortran 90 compiler
94tc-getFC() { tc-getPROG FC gfortran "$@"; }
95# @FUNCTION: tc-getGCJ
96# @USAGE: [toolchain prefix]
97# @RETURN: name of the java compiler
98tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
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 "$@"; }
111
112# @FUNCTION: tc-getBUILD_AR
113# @USAGE: [toolchain prefix]
114# @RETURN: name of the archiver for building binaries to run on the build machine
115tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
116# @FUNCTION: tc-getBUILD_AS
117# @USAGE: [toolchain prefix]
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 "$@"; }
152# @FUNCTION: tc-getBUILD_PKG_CONFIG
153# @USAGE: [toolchain prefix]
154# @RETURN: name of the pkg-config tool for building binaries to run on the build machine
155tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
156
157# @FUNCTION: tc-export
158# @USAGE: <list of toolchain variables>
159# @DESCRIPTION:
73# Quick way to export a bunch of vars at once 160# Quick way to export a bunch of compiler vars at once.
74tc-export() { 161tc-export() {
75 local var 162 local var
76 for var in "$@" ; do 163 for var in "$@" ; do
164 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
77 eval tc-get${var} > /dev/null 165 eval tc-get${var} > /dev/null
78 done 166 done
79} 167}
80 168
81# 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
82tc-is-cross-compiler() { 171tc-is-cross-compiler() {
83 return $([[ ${CBUILD:-${CHOST}} != ${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 [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
197 echo "softfp"
198 else
199 echo "no"
200 fi
201 ;;
202 esac
203}
204
205# @FUNCTION: tc-is-static-only
206# @DESCRIPTION:
207# Return shell true if the target does not support shared libs, shell false
208# otherwise.
209tc-is-static-only() {
210 local host=${CTARGET:-${CHOST}}
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 # 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}
84} 354}
85 355
86 356
87# Parse information from CBUILD/CHOST/CTARGET rather than 357# Parse information from CBUILD/CHOST/CTARGET rather than
88# use external variables from the profile. 358# use external variables from the profile.
91 361
92 local type=$1 362 local type=$1
93 local host=$2 363 local host=$2
94 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 364 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
95 365
366 local KV=${KV:-${KV_FULL}}
367 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
368 ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
369
96 case ${host} in 370 case ${host} in
371 aarch64*) echo arm64;;
97 alpha*) echo alpha;; 372 alpha*) echo alpha;;
98 arm*) echo arm;; 373 arm*) echo arm;;
374 avr*) ninj avr32 avr;;
375 bfin*) ninj blackfin bfin;;
376 c6x) echo c6x;;
99 cris*) echo cris;; 377 cris*) echo cris;;
378 frv) echo frv;;
379 hexagon) echo hexagon;;
100 hppa*) ninj parisc hppa;; 380 hppa*) ninj parisc hppa;;
101 i?86*) ninj i386 x86;; 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 ;;
102 ia64*) echo ia64;; 391 ia64*) echo ia64;;
103 m68*) echo m68k;; 392 m68*) echo m68k;;
393 metag) echo metag;;
104 mips*) echo mips;; 394 mips*) echo mips;;
105 powerpc64*) echo ppc64;; 395 nios2*) echo nios2;;
106 powerpc*) [[ ${PROFILE_ARCH} == "ppc64" ]] \ 396 nios*) echo nios;;
107 && ninj ppc64 ppc \ 397 or32) echo openrisc;;
398 powerpc*)
399 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
400 # have been unified into simply 'powerpc', but until 2.6.16,
401 # ppc32 is still using ARCH="ppc" as default
402 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
403 echo powerpc
404 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
405 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
406 echo powerpc
407 else
108 || echo ppc 408 echo ppc
409 fi
410 elif [[ ${host} == powerpc64* ]] ; then
411 echo ppc64
412 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
413 ninj ppc64 ppc
414 else
415 echo ppc
416 fi
109 ;; 417 ;;
110 s390*) echo s390;; 418 s390*) echo s390;;
419 score) echo score;;
111 sh64*) ninj sh64 sh;; 420 sh64*) ninj sh64 sh;;
112 sh*) echo sh;; 421 sh*) echo sh;;
113 sparc64*) ninj sparc64 sparc;; 422 sparc64*) ninj sparc64 sparc;;
114 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ 423 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
115 && ninj sparc64 sparc \ 424 && ninj sparc64 sparc \
116 || echo sparc 425 || echo sparc
117 ;; 426 ;;
427 tile*) echo tile;;
118 vax*) echo vax;; 428 vax*) echo vax;;
119 x86_64*) ninj x86_64 amd64;; 429 x86_64*freebsd*) echo amd64;;
120 *) echo ${ARCH};; 430 x86_64*)
431 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
432 # trees have been unified into 'x86'.
433 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
434 echo x86
435 else
436 ninj x86_64 amd64
437 fi
438 ;;
439 xtensa*) echo xtensa;;
440
441 # since our usage of tc-arch is largely concerned with
442 # normalizing inputs for testing ${CTARGET}, let's filter
443 # other cross targets (mingw and such) into the unknown.
444 *) echo unknown;;
121 esac 445 esac
122} 446}
447# @FUNCTION: tc-arch-kernel
448# @USAGE: [toolchain prefix]
449# @RETURN: name of the kernel arch according to the compiler target
123tc-arch-kernel() { 450tc-arch-kernel() {
124 tc-ninja_magic_to_arch kern $@ 451 tc-ninja_magic_to_arch kern "$@"
125} 452}
453# @FUNCTION: tc-arch
454# @USAGE: [toolchain prefix]
455# @RETURN: name of the portage arch according to the compiler target
126tc-arch() { 456tc-arch() {
127 tc-ninja_magic_to_arch portage $@ 457 tc-ninja_magic_to_arch portage "$@"
128} 458}
459
129tc-endian() { 460tc-endian() {
130 local host=$1 461 local host=$1
131 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}} 462 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
132 host=${host%%-*} 463 host=${host%%-*}
133 464
134 case ${host} in 465 case ${host} in
466 aarch64*be) echo big;;
467 aarch64) echo little;;
135 alpha*) echo big;; 468 alpha*) echo big;;
136 arm*b*) echo big;; 469 arm*b*) echo big;;
137 arm*) echo little;; 470 arm*) echo little;;
138 cris*) echo little;; 471 cris*) echo little;;
139 hppa*) echo big;; 472 hppa*) echo big;;
140 i?86*) echo little;; 473 i?86*) echo little;;
141 ia64*) echo little;; 474 ia64*) echo little;;
142 m68*) echo big;; 475 m68*) echo big;;
143 mips*l*) echo little;; 476 mips*l*) echo little;;
144 mips*) echo big;; 477 mips*) echo big;;
478 powerpc*le) echo little;;
145 powerpc*) echo big;; 479 powerpc*) echo big;;
146 s390*) echo big;; 480 s390*) echo big;;
147 sh*b*) echo big;; 481 sh*b*) echo big;;
148 sh*) echo little;; 482 sh*) echo little;;
149 sparc*) echo big;; 483 sparc*) echo big;;
150 x86_64*) echo little;; 484 x86_64*) echo little;;
151 *) echo wtf;; 485 *) echo wtf;;
152 esac 486 esac
153} 487}
154 488
155# Returns the version as by `$CC -dumpversion` 489# Internal func. The first argument is the version info to expand.
490# Query the preprocessor to improve compatibility across different
491# compilers rather than maintaining a --version flag matrix. #335943
492_gcc_fullversion() {
493 local ver="$1"; shift
494 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
495 eval echo "$ver"
496}
497
498# @FUNCTION: gcc-fullversion
499# @RETURN: compiler version (major.minor.micro: [3.4.6])
156gcc-fullversion() { 500gcc-fullversion() {
157 echo "$($(tc-getCC) -dumpversion)" 501 _gcc_fullversion '$1.$2.$3' "$@"
158} 502}
159# Returns the version, but only the <major>.<minor> 503# @FUNCTION: gcc-version
504# @RETURN: compiler version (major.minor: [3.4].6)
160gcc-version() { 505gcc-version() {
161 echo "$(gcc-fullversion | cut -f1,2 -d.)" 506 _gcc_fullversion '$1.$2' "$@"
162} 507}
163# Returns the Major version 508# @FUNCTION: gcc-major-version
509# @RETURN: major compiler version (major: [3].4.6)
164gcc-major-version() { 510gcc-major-version() {
165 echo "$(gcc-version | cut -f1 -d.)" 511 _gcc_fullversion '$1' "$@"
166} 512}
167# Returns the Minor version 513# @FUNCTION: gcc-minor-version
514# @RETURN: minor compiler version (minor: 3.[4].6)
168gcc-minor-version() { 515gcc-minor-version() {
169 echo "$(gcc-version | cut -f2 -d.)" 516 _gcc_fullversion '$2' "$@"
170} 517}
171# Returns the Micro version 518# @FUNCTION: gcc-micro-version
519# @RETURN: micro compiler version (micro: 3.4.[6])
172gcc-micro-version() { 520gcc-micro-version() {
173 echo "$(gcc-fullversion | cut -f3 -d. | cut -f1 -d-)" 521 _gcc_fullversion '$3' "$@"
174} 522}
175 523
524# Returns the installation directory - internal toolchain
525# function for use by _gcc-specs-exists (for flag-o-matic).
526_gcc-install-dir() {
527 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
528 awk '$1=="install:" {print $2}')"
529}
530# Returns true if the indicated specs file exists - internal toolchain
531# function for use by flag-o-matic.
532_gcc-specs-exists() {
533 [[ -f $(_gcc-install-dir)/$1 ]]
534}
535
176# Returns requested gcc specs directive 536# Returns requested gcc specs directive unprocessed - for used by
537# gcc-specs-directive()
177# Note; later specs normally overwrite earlier ones; however if a later 538# Note; later specs normally overwrite earlier ones; however if a later
178# spec starts with '+' then it appends. 539# spec starts with '+' then it appends.
179# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" 540# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
180# as "Reading <file>", in order. 541# as "Reading <file>", in order. Strictly speaking, if there's a
542# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
543# the same token anything from 'gcc -dumpspecs' is overridden by
544# the contents of $(gcc_install_dir)/specs so the result is the
545# same either way.
181gcc-specs-directive() { 546_gcc-specs-directive_raw() {
547 local cc=$(tc-getCC)
182 local specfiles=$($(tc-getCC) -v 2>&1 | awk '$1=="Reading" {print $NF}') 548 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
183 $(tc-getCC) -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ 549 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
184'BEGIN { pspec=""; spec=""; outside=1 } 550'BEGIN { pspec=""; spec=""; outside=1 }
185$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } 551$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
186 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next } 552 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
187 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next } 553 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
188 { spec=spec $0 } 554 { spec=spec $0 }
189END { print spec }' 555END { print spec }'
190 return 0 556 return 0
191} 557}
192 558
559# Return the requested gcc specs directive, with all included
560# specs expanded.
561# Note, it does not check for inclusion loops, which cause it
562# to never finish - but such loops are invalid for gcc and we're
563# assuming gcc is operational.
564gcc-specs-directive() {
565 local directive subdname subdirective
566 directive="$(_gcc-specs-directive_raw $1)"
567 while [[ ${directive} == *%\(*\)* ]]; do
568 subdname=${directive/*%\(}
569 subdname=${subdname/\)*}
570 subdirective="$(_gcc-specs-directive_raw ${subdname})"
571 directive="${directive//\%(${subdname})/${subdirective}}"
572 done
573 echo "${directive}"
574 return 0
575}
576
193# Returns true if gcc sets relro 577# Returns true if gcc sets relro
194gcc-specs-relro() { 578gcc-specs-relro() {
195 local directive 579 local directive
196 directive=$(gcc-specs-directive link_command) 580 directive=$(gcc-specs-directive link_command)
197 return $([[ ${directive/\{!norelro:} != ${directive} ]]) 581 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
198} 582}
199# Returns true if gcc sets now 583# Returns true if gcc sets now
200gcc-specs-now() { 584gcc-specs-now() {
201 local directive 585 local directive
202 directive=$(gcc-specs-directive link_command) 586 directive=$(gcc-specs-directive link_command)
203 return $([[ ${directive/\{!nonow:} != ${directive} ]]) 587 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
204} 588}
205# Returns true if gcc builds PIEs 589# Returns true if gcc builds PIEs
206gcc-specs-pie() { 590gcc-specs-pie() {
207 local directive 591 local directive
208 directive=$(gcc-specs-directive cc1) 592 directive=$(gcc-specs-directive cc1)
209 return $([[ ${directive/\{!nopie:} != ${directive} ]]) 593 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
210} 594}
211# Returns true if gcc builds with the stack protector 595# Returns true if gcc builds with the stack protector
212gcc-specs-ssp() { 596gcc-specs-ssp() {
213 local directive 597 local directive
214 directive=$(gcc-specs-directive cc1) 598 directive=$(gcc-specs-directive cc1)
215 return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) 599 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
216} 600}
217# Returns true if gcc upgrades fstack-protector to fstack-protector-all 601# Returns true if gcc upgrades fstack-protector to fstack-protector-all
218gcc-specs-ssp-to-all() { 602gcc-specs-ssp-to-all() {
219 local directive 603 local directive
220 directive=$(gcc-specs-directive cc1) 604 directive=$(gcc-specs-directive cc1)
221 return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) 605 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
222} 606}
607# Returns true if gcc builds with fno-strict-overflow
608gcc-specs-nostrict() {
609 local directive
610 directive=$(gcc-specs-directive cc1)
611 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
612}
613
614
615# @FUNCTION: gen_usr_ldscript
616# @USAGE: [-a] <list of libs to create linker scripts for>
617# @DESCRIPTION:
618# This function generate linker scripts in /usr/lib for dynamic
619# libs in /lib. This is to fix linking problems when you have
620# the .so in /lib, and the .a in /usr/lib. What happens is that
621# in some cases when linking dynamic, the .a in /usr/lib is used
622# instead of the .so in /lib due to gcc/libtool tweaking ld's
623# library search path. This causes many builds to fail.
624# See bug #4411 for more info.
625#
626# Note that you should in general use the unversioned name of
627# the library (libfoo.so), as ldconfig should usually update it
628# correctly to point to the latest version of the library present.
629gen_usr_ldscript() {
630 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
631 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
632
633 tc-is-static-only && return
634
635 # Eventually we'd like to get rid of this func completely #417451
636 case ${CTARGET:-${CHOST}} in
637 *-darwin*) ;;
638 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
639 use prefix && return 0 ;;
640 *) return 0 ;;
641 esac
642
643 # Just make sure it exists
644 dodir /usr/${libdir}
645
646 if [[ $1 == "-a" ]] ; then
647 auto=true
648 shift
649 dodir /${libdir}
650 fi
651
652 # OUTPUT_FORMAT gives hints to the linker as to what binary format
653 # is referenced ... makes multilib saner
654 local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
655 if $(tc-getLD) --version | grep -q 'GNU gold' ; then
656 # If they're using gold, manually invoke the old bfd. #487696
657 local d="${T}/bfd-linker"
658 mkdir -p "${d}"
659 ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
660 flags+=( -B"${d}" )
661 fi
662 output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
663 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
664
665 for lib in "$@" ; do
666 local tlib
667 if ${auto} ; then
668 lib="lib${lib}${suffix}"
669 else
670 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
671 # This especially is for AIX where $(get_libname) can return ".a",
672 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
673 [[ -r ${ED}/${libdir}/${lib} ]] || continue
674 #TODO: better die here?
675 fi
676
677 case ${CTARGET:-${CHOST}} in
678 *-darwin*)
679 if ${auto} ; then
680 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
681 else
682 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
683 fi
684 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
685 tlib=${tlib##*/}
686
687 if ${auto} ; then
688 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
689 # some install_names are funky: they encode a version
690 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
691 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
692 fi
693 rm -f "${ED}"/${libdir}/${lib}
694 fi
695
696 # Mach-O files have an id, which is like a soname, it tells how
697 # another object linking against this lib should reference it.
698 # Since we moved the lib from usr/lib into lib this reference is
699 # wrong. Hence, we update it here. We don't configure with
700 # libdir=/lib because that messes up libtool files.
701 # Make sure we don't lose the specific version, so just modify the
702 # existing install_name
703 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
704 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
705 local nowrite=yes
706 fi
707 install_name_tool \
708 -id "${EPREFIX}"/${libdir}/${tlib} \
709 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
710 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
711 # Now as we don't use GNU binutils and our linker doesn't
712 # understand linker scripts, just create a symlink.
713 pushd "${ED}/usr/${libdir}" > /dev/null
714 ln -snf "../../${libdir}/${tlib}" "${lib}"
715 popd > /dev/null
716 ;;
717 *)
718 if ${auto} ; then
719 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
720 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
721 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
722 # some SONAMEs are funky: they encode a version before the .so
723 if [[ ${tlib} != ${lib}* ]] ; then
724 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
725 fi
726 rm -f "${ED}"/${libdir}/${lib}
727 else
728 tlib=${lib}
729 fi
730 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
731 /* GNU ld script
732 Since Gentoo has critical dynamic libraries in /lib, and the static versions
733 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
734 run into linking problems. This "fake" dynamic lib is a linker script that
735 redirects the linker to the real lib. And yes, this works in the cross-
736 compiling scenario as the sysroot-ed linker will prepend the real path.
737
738 See bug http://bugs.gentoo.org/4411 for more info.
739 */
740 ${output_format}
741 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
742 END_LDSCRIPT
743 ;;
744 esac
745 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
746 done
747}
748
749fi

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