/[gentoo-x86]/eclass/toolchain-funcs.eclass
Gentoo

Diff of /eclass/toolchain-funcs.eclass

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

Revision 1.13 Revision 1.133
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 1.13 2004/12/14 05:04:09 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.133 2015/03/10 17:56:30 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=$3
20 local search=""
21 26
27 var=${vars%% *}
28 for v in ${vars} ; do
22 if [ -n "${!var}" ] ; then 29 if [[ -n ${!v} ]] ; then
30 export ${var}="${!v}"
23 echo "${!var}" 31 echo "${!v}"
24 return 0 32 return 0
25 fi 33 fi
34 done
26 35
27 if [ -n "${CTARGET}" ] ; then 36 local search=
28 search="$(type -p "${CTARGET}-${prog}")" 37 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
29 elif [ -n "${CHOST}" ] ; then 38 [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
30 search="$(type -p "${CHOST}-${prog}")" 39 [[ -n ${search} ]] && prog=${search##*/}
31 fi
32 40
33 if [ -n "${search}" ] ; then
34 prog="${search##*/}"
35 fi
36 export ${var}="${prog}" 41 export ${var}=${prog}
37 echo "${!var}" 42 echo "${!var}"
38} 43}
44tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
45tc-getPROG() { _tc-getPROG CHOST "$@"; }
39 46
40# Returns the name of the archiver 47# @FUNCTION: tc-getAR
48# @USAGE: [toolchain prefix]
49# @RETURN: name of the archiver
41tc-getAR() { tc-getPROG AR ar; } 50tc-getAR() { tc-getPROG AR ar "$@"; }
42# Returns the name of the assembler 51# @FUNCTION: tc-getAS
52# @USAGE: [toolchain prefix]
53# @RETURN: name of the assembler
43tc-getAS() { tc-getPROG AS as; } 54tc-getAS() { tc-getPROG AS as "$@"; }
55# @FUNCTION: tc-getCC
56# @USAGE: [toolchain prefix]
44# Returns the name of the C compiler 57# @RETURN: name of the C compiler
45tc-getCC() { tc-getPROG CC gcc; } 58tc-getCC() { tc-getPROG CC gcc "$@"; }
59# @FUNCTION: tc-getCPP
60# @USAGE: [toolchain prefix]
61# @RETURN: name of the C preprocessor
62tc-getCPP() { tc-getPROG CPP cpp "$@"; }
63# @FUNCTION: tc-getCXX
64# @USAGE: [toolchain prefix]
46# Returns the name of the C++ compiler 65# @RETURN: name of the C++ compiler
47tc-getCXX() { tc-getPROG CXX g++; } 66tc-getCXX() { tc-getPROG CXX g++ "$@"; }
48# Returns the name of the linker 67# @FUNCTION: tc-getLD
68# @USAGE: [toolchain prefix]
69# @RETURN: name of the linker
49tc-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]
50# Returns the name of the symbol/object thingy 77# @RETURN: name of the symbol/object thingy
51tc-getNM() { tc-getPROG NM nm; } 78tc-getNM() { tc-getPROG NM nm "$@"; }
79# @FUNCTION: tc-getRANLIB
80# @USAGE: [toolchain prefix]
52# Returns the name of the archiver indexer 81# @RETURN: name of the archiver indexer
53tc-getRANLIB() { tc-getPROG RANLIB ranlib; } 82tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
54# 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 "$@"; }
87# @FUNCTION: tc-getF77
88# @USAGE: [toolchain prefix]
89# @RETURN: name of the Fortran 77 compiler
55tc-getF77() { tc-getPROG F77 f77; } 90tc-getF77() { tc-getPROG F77 gfortran "$@"; }
91# @FUNCTION: tc-getFC
92# @USAGE: [toolchain prefix]
93# @RETURN: name of the Fortran 90 compiler
94tc-getFC() { tc-getPROG FC gfortran "$@"; }
95# @FUNCTION: tc-getGCJ
96# @USAGE: [toolchain prefix]
56# Returns the name of the java compiler 97# @RETURN: name of the java compiler
57tc-getGCJ() { tc-getPROG GCJ gcj; } 98tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
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 "$@"; }
58 111
59# Returns the name of the C compiler for build 112# @FUNCTION: tc-getBUILD_AR
60tc-getBUILD_CC() { 113# @USAGE: [toolchain prefix]
61 if [ -n "${CC_FOR_BUILD}" ] ; then 114# @RETURN: name of the archiver for building binaries to run on the build machine
62 export BUILD_CC="${CC_FOR_BUILD}" 115tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
63 echo "${CC_FOR_BUILD}" 116# @FUNCTION: tc-getBUILD_AS
64 return 0 117# @USAGE: [toolchain prefix]
65 fi 118# @RETURN: name of the assembler for building binaries to run on the build machine
119tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
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 "$@"; }
66 156
67 local search= 157# @FUNCTION: tc-export
68 if [ -n "${CBUILD}" ] ; then 158# @USAGE: <list of toolchain variables>
69 search="$(type -p "${CBUILD}-gcc")" 159# @DESCRIPTION:
70 fi
71
72 if [ -n "${search}" ] ; then
73 search="${search##*/}"
74 else
75 search="gcc"
76 fi
77
78 export BUILD_CC="${search}"
79 echo "${search}"
80}
81
82# Quick way to export a bunch of vars at once 160# Quick way to export a bunch of compiler vars at once.
83tc-export() { 161tc-export() {
84 local var 162 local var
85 for var in "$@" ; do 163 for var in "$@" ; do
164 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
86 eval tc-get${var} 165 eval tc-get${var} > /dev/null
87 done 166 done
88} 167}
89 168
90# A simple way to see if we're using a cross-compiler ... 169# @FUNCTION: tc-is-cross-compiler
170# @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
91tc-is-cross-compiler() { 171tc-is-cross-compiler() {
92 local ret tmpfile=$(emktemp).c 172 [[ ${CBUILD:-${CHOST}} != ${CHOST} ]]
93 echo 'int main(){return 0;}' > "${tmpfile}" 173}
94 $(tc-getCC) "${tmpfile}" -o "${tmpfile}".bin 174
95 "${tmpfile}".bin &>/dev/null 175# @FUNCTION: tc-is-softfloat
96 ret=$? 176# @DESCRIPTION:
97 rm -f "${tmpfile}" "${tmpfile}".bin 177# See if this toolchain is a softfloat based one.
178# @CODE
179# The possible return values:
180# - only: the target is always softfloat (never had fpu)
181# - yes: the target should support softfloat
182# - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
183# - no: the target doesn't support softfloat
184# @CODE
185# This allows us to react differently where packages accept
186# softfloat flags in the case where support is optional, but
187# rejects softfloat flags where the target always lacks an fpu.
188tc-is-softfloat() {
189 local CTARGET=${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 [[ ${host} == *-mint* ]]
214}
215
216# @FUNCTION: tc-export_build_env
217# @USAGE: [compiler variables]
218# @DESCRIPTION:
219# Export common build related compiler settings.
220tc-export_build_env() {
221 tc-export "$@"
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 ${S}/
294# popd >/dev/null
295# fi
296# ... normal build paths ...
297# }
298# @CODE
299econf_build() {
300 local CBUILD=${CBUILD:-${CHOST}}
301 tc-env_build econf --build=${CBUILD} --host=${CBUILD} "$@"
302}
303
304# @FUNCTION: tc-has-openmp
305# @USAGE: [toolchain prefix]
306# @DESCRIPTION:
307# See if the toolchain supports OpenMP.
308tc-has-openmp() {
309 local base="${T}/test-tc-openmp"
310 cat <<-EOF > "${base}.c"
311 #include <omp.h>
312 int main() {
313 int nthreads, tid, ret = 0;
314 #pragma omp parallel private(nthreads, tid)
315 {
316 tid = omp_get_thread_num();
317 nthreads = omp_get_num_threads(); ret += tid + nthreads;
318 }
319 return ret;
320 }
321 EOF
322 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
323 local ret=$?
324 rm -f "${base}"*
98 return ${ret} 325 return ${ret}
99} 326}
100 327
328# @FUNCTION: tc-has-tls
329# @USAGE: [-s|-c|-l] [toolchain prefix]
330# @DESCRIPTION:
331# See if the toolchain supports thread local storage (TLS). Use -s to test the
332# compiler, -c to also test the assembler, and -l to also test the C library
333# (the default).
334tc-has-tls() {
335 local base="${T}/test-tc-tls"
336 cat <<-EOF > "${base}.c"
337 int foo(int *i) {
338 static __thread int j = 0;
339 return *i ? j : *i;
340 }
341 EOF
342 local flags
343 case $1 in
344 -s) flags="-S";;
345 -c) flags="-c";;
346 -l) ;;
347 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
348 esac
349 : ${flags:=-fPIC -shared -Wl,-z,defs}
350 [[ $1 == -* ]] && shift
351 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
352 local ret=$?
353 rm -f "${base}"*
354 return ${ret}
355}
101 356
102# Returns the version as by `$CC -dumpversion` 357
358# Parse information from CBUILD/CHOST/CTARGET rather than
359# use external variables from the profile.
360tc-ninja_magic_to_arch() {
361ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
362
363 local type=$1
364 local host=$2
365 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
366
367 local KV=${KV:-${KV_FULL}}
368 [[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \
369 ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info"
370
371 case ${host} in
372 aarch64*) echo arm64;;
373 alpha*) echo alpha;;
374 arm*) echo arm;;
375 avr*) ninj avr32 avr;;
376 bfin*) ninj blackfin bfin;;
377 c6x*) echo c6x;;
378 cris*) echo cris;;
379 frv*) echo frv;;
380 hexagon*) echo hexagon;;
381 hppa*) ninj parisc hppa;;
382 i?86*)
383 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
384 # trees have been unified into 'x86'.
385 # FreeBSD still uses i386
386 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
387 echo i386
388 else
389 echo x86
390 fi
391 ;;
392 ia64*) echo ia64;;
393 m68*) echo m68k;;
394 metag*) echo metag;;
395 microblaze*) echo microblaze;;
396 mips*) echo mips;;
397 nios2*) echo nios2;;
398 nios*) echo nios;;
399 or32*) echo openrisc;;
400 powerpc*)
401 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
402 # have been unified into simply 'powerpc', but until 2.6.16,
403 # ppc32 is still using ARCH="ppc" as default
404 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
405 echo powerpc
406 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
407 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
408 echo powerpc
409 else
410 echo ppc
411 fi
412 elif [[ ${host} == powerpc64* ]] ; then
413 echo ppc64
414 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
415 ninj ppc64 ppc
416 else
417 echo ppc
418 fi
419 ;;
420 riscv*) echo riscv;;
421 s390*) echo s390;;
422 score*) echo score;;
423 sh64*) ninj sh64 sh;;
424 sh*) echo sh;;
425 sparc64*) ninj sparc64 sparc;;
426 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
427 && ninj sparc64 sparc \
428 || echo sparc
429 ;;
430 tile*) echo tile;;
431 vax*) echo vax;;
432 x86_64*freebsd*) echo amd64;;
433 x86_64*)
434 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
435 # trees have been unified into 'x86'.
436 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
437 echo x86
438 else
439 ninj x86_64 amd64
440 fi
441 ;;
442 xtensa*) echo xtensa;;
443
444 # since our usage of tc-arch is largely concerned with
445 # normalizing inputs for testing ${CTARGET}, let's filter
446 # other cross targets (mingw and such) into the unknown.
447 *) echo unknown;;
448 esac
449}
450# @FUNCTION: tc-arch-kernel
451# @USAGE: [toolchain prefix]
452# @RETURN: name of the kernel arch according to the compiler target
453tc-arch-kernel() {
454 tc-ninja_magic_to_arch kern "$@"
455}
456# @FUNCTION: tc-arch
457# @USAGE: [toolchain prefix]
458# @RETURN: name of the portage arch according to the compiler target
459tc-arch() {
460 tc-ninja_magic_to_arch portage "$@"
461}
462
463tc-endian() {
464 local host=$1
465 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
466 host=${host%%-*}
467
468 case ${host} in
469 aarch64*be) echo big;;
470 aarch64) echo little;;
471 alpha*) echo big;;
472 arm*b*) echo big;;
473 arm*) echo little;;
474 cris*) echo little;;
475 hppa*) echo big;;
476 i?86*) echo little;;
477 ia64*) echo little;;
478 m68*) echo big;;
479 mips*l*) echo little;;
480 mips*) echo big;;
481 powerpc*le) echo little;;
482 powerpc*) echo big;;
483 s390*) echo big;;
484 sh*b*) echo big;;
485 sh*) echo little;;
486 sparc*) echo big;;
487 x86_64*) echo little;;
488 *) echo wtf;;
489 esac
490}
491
492# Internal func. The first argument is the version info to expand.
493# Query the preprocessor to improve compatibility across different
494# compilers rather than maintaining a --version flag matrix. #335943
495_gcc_fullversion() {
496 local ver="$1"; shift
497 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
498 eval echo "$ver"
499}
500
501# @FUNCTION: gcc-fullversion
502# @RETURN: compiler version (major.minor.micro: [3.4.6])
103gcc-fullversion() { 503gcc-fullversion() {
104 echo "$($(tc-getCC) -dumpversion)" 504 _gcc_fullversion '$1.$2.$3' "$@"
105} 505}
106# Returns the version, but only the <major>.<minor> 506# @FUNCTION: gcc-version
507# @RETURN: compiler version (major.minor: [3.4].6)
107gcc-version() { 508gcc-version() {
108 echo "$(gcc-fullversion | cut -f1,2 -d.)" 509 _gcc_fullversion '$1.$2' "$@"
109} 510}
110# Returns the Major version 511# @FUNCTION: gcc-major-version
512# @RETURN: major compiler version (major: [3].4.6)
111gcc-major-version() { 513gcc-major-version() {
112 echo "$(gcc-version | cut -f1 -d.)" 514 _gcc_fullversion '$1' "$@"
113} 515}
114# Returns the Minor version 516# @FUNCTION: gcc-minor-version
517# @RETURN: minor compiler version (minor: 3.[4].6)
115gcc-minor-version() { 518gcc-minor-version() {
116 echo "$(gcc-version | cut -f2 -d.)" 519 _gcc_fullversion '$2' "$@"
117} 520}
118# Returns the Micro version 521# @FUNCTION: gcc-micro-version
522# @RETURN: micro compiler version (micro: 3.4.[6])
119gcc-micro-version() { 523gcc-micro-version() {
120 echo "$(gcc-fullversion | cut -f3 -d.)" 524 _gcc_fullversion '$3' "$@"
121} 525}
526
527# Returns the installation directory - internal toolchain
528# function for use by _gcc-specs-exists (for flag-o-matic).
529_gcc-install-dir() {
530 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
531 awk '$1=="install:" {print $2}')"
532}
533# Returns true if the indicated specs file exists - internal toolchain
534# function for use by flag-o-matic.
535_gcc-specs-exists() {
536 [[ -f $(_gcc-install-dir)/$1 ]]
537}
538
539# Returns requested gcc specs directive unprocessed - for used by
540# gcc-specs-directive()
541# Note; later specs normally overwrite earlier ones; however if a later
542# spec starts with '+' then it appends.
543# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
544# as "Reading <file>", in order. Strictly speaking, if there's a
545# $(gcc_install_dir)/specs, the built-in specs aren't read, however by
546# the same token anything from 'gcc -dumpspecs' is overridden by
547# the contents of $(gcc_install_dir)/specs so the result is the
548# same either way.
549_gcc-specs-directive_raw() {
550 local cc=$(tc-getCC)
551 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
552 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
553'BEGIN { pspec=""; spec=""; outside=1 }
554$1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
555 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
556 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
557 { spec=spec $0 }
558END { print spec }'
559 return 0
560}
561
562# Return the requested gcc specs directive, with all included
563# specs expanded.
564# Note, it does not check for inclusion loops, which cause it
565# to never finish - but such loops are invalid for gcc and we're
566# assuming gcc is operational.
567gcc-specs-directive() {
568 local directive subdname subdirective
569 directive="$(_gcc-specs-directive_raw $1)"
570 while [[ ${directive} == *%\(*\)* ]]; do
571 subdname=${directive/*%\(}
572 subdname=${subdname/\)*}
573 subdirective="$(_gcc-specs-directive_raw ${subdname})"
574 directive="${directive//\%(${subdname})/${subdirective}}"
575 done
576 echo "${directive}"
577 return 0
578}
579
580# Returns true if gcc sets relro
581gcc-specs-relro() {
582 local directive
583 directive=$(gcc-specs-directive link_command)
584 [[ "${directive/\{!norelro:}" != "${directive}" ]]
585}
586# Returns true if gcc sets now
587gcc-specs-now() {
588 local directive
589 directive=$(gcc-specs-directive link_command)
590 [[ "${directive/\{!nonow:}" != "${directive}" ]]
591}
592# Returns true if gcc builds PIEs
593gcc-specs-pie() {
594 local directive
595 directive=$(gcc-specs-directive cc1)
596 [[ "${directive/\{!nopie:}" != "${directive}" ]]
597}
598# Returns true if gcc builds with the stack protector
599gcc-specs-ssp() {
600 local directive
601 directive=$(gcc-specs-directive cc1)
602 [[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
603}
604# Returns true if gcc upgrades fstack-protector to fstack-protector-all
605gcc-specs-ssp-to-all() {
606 local directive
607 directive=$(gcc-specs-directive cc1)
608 [[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
609}
610# Returns true if gcc builds with fno-strict-overflow
611gcc-specs-nostrict() {
612 local directive
613 directive=$(gcc-specs-directive cc1)
614 [[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
615}
616# Returns true if gcc builds with fstack-check
617gcc-specs-stack-check() {
618 local directive
619 directive=$(gcc-specs-directive cc1)
620 [[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
621}
622
623
624# @FUNCTION: gen_usr_ldscript
625# @USAGE: [-a] <list of libs to create linker scripts for>
626# @DESCRIPTION:
627# This function generate linker scripts in /usr/lib for dynamic
628# libs in /lib. This is to fix linking problems when you have
629# the .so in /lib, and the .a in /usr/lib. What happens is that
630# in some cases when linking dynamic, the .a in /usr/lib is used
631# instead of the .so in /lib due to gcc/libtool tweaking ld's
632# library search path. This causes many builds to fail.
633# See bug #4411 for more info.
634#
635# Note that you should in general use the unversioned name of
636# the library (libfoo.so), as ldconfig should usually update it
637# correctly to point to the latest version of the library present.
638gen_usr_ldscript() {
639 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
640 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
641
642 tc-is-static-only && return
643
644 # Eventually we'd like to get rid of this func completely #417451
645 case ${CTARGET:-${CHOST}} in
646 *-darwin*) ;;
647 *linux*|*-freebsd*|*-openbsd*|*-netbsd*)
648 use prefix && return 0 ;;
649 *) return 0 ;;
650 esac
651
652 # Just make sure it exists
653 dodir /usr/${libdir}
654
655 if [[ $1 == "-a" ]] ; then
656 auto=true
657 shift
658 dodir /${libdir}
659 fi
660
661 # OUTPUT_FORMAT gives hints to the linker as to what binary format
662 # is referenced ... makes multilib saner
663 local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
664 if $(tc-getLD) --version | grep -q 'GNU gold' ; then
665 # If they're using gold, manually invoke the old bfd. #487696
666 local d="${T}/bfd-linker"
667 mkdir -p "${d}"
668 ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
669 flags+=( -B"${d}" )
670 fi
671 output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
672 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
673
674 for lib in "$@" ; do
675 local tlib
676 if ${auto} ; then
677 lib="lib${lib}${suffix}"
678 else
679 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
680 # This especially is for AIX where $(get_libname) can return ".a",
681 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
682 [[ -r ${ED}/${libdir}/${lib} ]] || continue
683 #TODO: better die here?
684 fi
685
686 case ${CTARGET:-${CHOST}} in
687 *-darwin*)
688 if ${auto} ; then
689 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
690 else
691 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
692 fi
693 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
694 tlib=${tlib##*/}
695
696 if ${auto} ; then
697 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
698 # some install_names are funky: they encode a version
699 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
700 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
701 fi
702 rm -f "${ED}"/${libdir}/${lib}
703 fi
704
705 # Mach-O files have an id, which is like a soname, it tells how
706 # another object linking against this lib should reference it.
707 # Since we moved the lib from usr/lib into lib this reference is
708 # wrong. Hence, we update it here. We don't configure with
709 # libdir=/lib because that messes up libtool files.
710 # Make sure we don't lose the specific version, so just modify the
711 # existing install_name
712 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
713 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
714 local nowrite=yes
715 fi
716 install_name_tool \
717 -id "${EPREFIX}"/${libdir}/${tlib} \
718 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
719 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
720 # Now as we don't use GNU binutils and our linker doesn't
721 # understand linker scripts, just create a symlink.
722 pushd "${ED}/usr/${libdir}" > /dev/null
723 ln -snf "../../${libdir}/${tlib}" "${lib}"
724 popd > /dev/null
725 ;;
726 *)
727 if ${auto} ; then
728 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
729 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
730 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
731 # some SONAMEs are funky: they encode a version before the .so
732 if [[ ${tlib} != ${lib}* ]] ; then
733 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
734 fi
735 rm -f "${ED}"/${libdir}/${lib}
736 else
737 tlib=${lib}
738 fi
739 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
740 /* GNU ld script
741 Since Gentoo has critical dynamic libraries in /lib, and the static versions
742 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
743 run into linking problems. This "fake" dynamic lib is a linker script that
744 redirects the linker to the real lib. And yes, this works in the cross-
745 compiling scenario as the sysroot-ed linker will prepend the real path.
746
747 See bug http://bugs.gentoo.org/4411 for more info.
748 */
749 ${output_format}
750 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
751 END_LDSCRIPT
752 ;;
753 esac
754 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
755 done
756}
757
758fi

Legend:
Removed from v.1.13  
changed lines
  Added in v.1.133

  ViewVC Help
Powered by ViewVC 1.1.20