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

Contents of /eclass/toolchain-funcs.eclass

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1.111 - (show annotations) (download)
Sat Jun 9 06:56:14 2012 UTC (2 years, 4 months ago) by vapier
Branch: MAIN
Changes since 1.110: +12 -20 lines
add *-softfp-* support to the vendor field for people who want this for binary compat with closed sourced drivers #416727 by Raúl Porcel; merge the tc-is-hardfloat helper into the one place where it is called in the whole tree to avoid further confusion between when the return values of tc-is-softfloat and tc-is-hardfloat

1 # Copyright 1999-2011 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.110 2012/05/10 03:31:22 vapier Exp $
4
5 # @ECLASS: toolchain-funcs.eclass
6 # @MAINTAINER:
7 # Toolchain Ninjas <toolchain@gentoo.org>
8 # @BLURB: functions to query common info about the toolchain
9 # @DESCRIPTION:
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
16 if [[ ${___ECLASS_ONCE_TOOLCHAIN_FUNCS} != "recur -_+^+_- spank" ]] ; then
17 ___ECLASS_ONCE_TOOLCHAIN_FUNCS="recur -_+^+_- spank"
18
19 inherit multilib
20
21 DESCRIPTION="Based on the ${ECLASS} eclass"
22
23 # tc-getPROG <VAR [search vars]> <default> [tuple]
24 _tc-getPROG() {
25 local tuple=$1
26 local v var vars=$2
27 local prog=$3
28
29 var=${vars%% *}
30 for v in ${vars} ; do
31 if [[ -n ${!v} ]] ; then
32 export ${var}="${!v}"
33 echo "${!v}"
34 return 0
35 fi
36 done
37
38 local search=
39 [[ -n $4 ]] && search=$(type -p "$4-${prog}")
40 [[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}")
41 [[ -n ${search} ]] && prog=${search##*/}
42
43 export ${var}=${prog}
44 echo "${!var}"
45 }
46 tc-getBUILD_PROG() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; }
47 tc-getPROG() { _tc-getPROG CHOST "$@"; }
48
49 # @FUNCTION: tc-getAR
50 # @USAGE: [toolchain prefix]
51 # @RETURN: name of the archiver
52 tc-getAR() { tc-getPROG AR ar "$@"; }
53 # @FUNCTION: tc-getAS
54 # @USAGE: [toolchain prefix]
55 # @RETURN: name of the assembler
56 tc-getAS() { tc-getPROG AS as "$@"; }
57 # @FUNCTION: tc-getCC
58 # @USAGE: [toolchain prefix]
59 # @RETURN: name of the C compiler
60 tc-getCC() { tc-getPROG CC gcc "$@"; }
61 # @FUNCTION: tc-getCPP
62 # @USAGE: [toolchain prefix]
63 # @RETURN: name of the C preprocessor
64 tc-getCPP() { tc-getPROG CPP cpp "$@"; }
65 # @FUNCTION: tc-getCXX
66 # @USAGE: [toolchain prefix]
67 # @RETURN: name of the C++ compiler
68 tc-getCXX() { tc-getPROG CXX g++ "$@"; }
69 # @FUNCTION: tc-getLD
70 # @USAGE: [toolchain prefix]
71 # @RETURN: name of the linker
72 tc-getLD() { tc-getPROG LD ld "$@"; }
73 # @FUNCTION: tc-getSTRIP
74 # @USAGE: [toolchain prefix]
75 # @RETURN: name of the strip program
76 tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
77 # @FUNCTION: tc-getNM
78 # @USAGE: [toolchain prefix]
79 # @RETURN: name of the symbol/object thingy
80 tc-getNM() { tc-getPROG NM nm "$@"; }
81 # @FUNCTION: tc-getRANLIB
82 # @USAGE: [toolchain prefix]
83 # @RETURN: name of the archiver indexer
84 tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
85 # @FUNCTION: tc-getOBJCOPY
86 # @USAGE: [toolchain prefix]
87 # @RETURN: name of the object copier
88 tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
89 # @FUNCTION: tc-getF77
90 # @USAGE: [toolchain prefix]
91 # @RETURN: name of the Fortran 77 compiler
92 tc-getF77() { tc-getPROG F77 gfortran "$@"; }
93 # @FUNCTION: tc-getFC
94 # @USAGE: [toolchain prefix]
95 # @RETURN: name of the Fortran 90 compiler
96 tc-getFC() { tc-getPROG FC gfortran "$@"; }
97 # @FUNCTION: tc-getGCJ
98 # @USAGE: [toolchain prefix]
99 # @RETURN: name of the java compiler
100 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
101 # @FUNCTION: tc-getPKG_CONFIG
102 # @USAGE: [toolchain prefix]
103 # @RETURN: name of the pkg-config tool
104 tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
105 # @FUNCTION: tc-getRC
106 # @USAGE: [toolchain prefix]
107 # @RETURN: name of the Windows resource compiler
108 tc-getRC() { tc-getPROG RC windres "$@"; }
109 # @FUNCTION: tc-getDLLWRAP
110 # @USAGE: [toolchain prefix]
111 # @RETURN: name of the Windows dllwrap utility
112 tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
113
114 # @FUNCTION: tc-getBUILD_AR
115 # @USAGE: [toolchain prefix]
116 # @RETURN: name of the archiver for building binaries to run on the build machine
117 tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
118 # @FUNCTION: tc-getBUILD_AS
119 # @USAGE: [toolchain prefix]
120 # @RETURN: name of the assembler for building binaries to run on the build machine
121 tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
122 # @FUNCTION: tc-getBUILD_CC
123 # @USAGE: [toolchain prefix]
124 # @RETURN: name of the C compiler for building binaries to run on the build machine
125 tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
126 # @FUNCTION: tc-getBUILD_CPP
127 # @USAGE: [toolchain prefix]
128 # @RETURN: name of the C preprocessor for building binaries to run on the build machine
129 tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; }
130 # @FUNCTION: tc-getBUILD_CXX
131 # @USAGE: [toolchain prefix]
132 # @RETURN: name of the C++ compiler for building binaries to run on the build machine
133 tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
134 # @FUNCTION: tc-getBUILD_LD
135 # @USAGE: [toolchain prefix]
136 # @RETURN: name of the linker for building binaries to run on the build machine
137 tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
138 # @FUNCTION: tc-getBUILD_STRIP
139 # @USAGE: [toolchain prefix]
140 # @RETURN: name of the strip program for building binaries to run on the build machine
141 tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
142 # @FUNCTION: tc-getBUILD_NM
143 # @USAGE: [toolchain prefix]
144 # @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
145 tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
146 # @FUNCTION: tc-getBUILD_RANLIB
147 # @USAGE: [toolchain prefix]
148 # @RETURN: name of the archiver indexer for building binaries to run on the build machine
149 tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
150 # @FUNCTION: tc-getBUILD_OBJCOPY
151 # @USAGE: [toolchain prefix]
152 # @RETURN: name of the object copier for building binaries to run on the build machine
153 tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
154 # @FUNCTION: tc-getBUILD_PKG_CONFIG
155 # @USAGE: [toolchain prefix]
156 # @RETURN: name of the pkg-config tool for building binaries to run on the build machine
157 tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
158
159 # @FUNCTION: tc-export
160 # @USAGE: <list of toolchain variables>
161 # @DESCRIPTION:
162 # Quick way to export a bunch of compiler vars at once.
163 tc-export() {
164 local var
165 for var in "$@" ; do
166 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
167 eval tc-get${var} > /dev/null
168 done
169 }
170
171 # @FUNCTION: tc-is-cross-compiler
172 # @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
173 tc-is-cross-compiler() {
174 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
175 }
176
177 # @FUNCTION: tc-is-softfloat
178 # @DESCRIPTION:
179 # See if this toolchain is a softfloat based one.
180 # @CODE
181 # The possible return values:
182 # - only: the target is always softfloat (never had fpu)
183 # - yes: the target should support softfloat
184 # - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
185 # - no: the target doesn't support softfloat
186 # @CODE
187 # This allows us to react differently where packages accept
188 # softfloat flags in the case where support is optional, but
189 # rejects softfloat flags where the target always lacks an fpu.
190 tc-is-softfloat() {
191 local CTARGET=${CTARGET:-${CHOST}}
192 case ${CTARGET} in
193 bfin*|h8300*)
194 echo "only" ;;
195 *)
196 if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then
197 echo "yes"
198 elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then
199 echo "softfp"
200 else
201 echo "no"
202 fi
203 ;;
204 esac
205 }
206
207 # @FUNCTION: tc-is-static-only
208 # @DESCRIPTION:
209 # Return shell true if the target does not support shared libs, shell false
210 # otherwise.
211 tc-is-static-only() {
212 local host=${CTARGET:-${CHOST}}
213
214 # *MiNT doesn't have shared libraries, only platform so far
215 return $([[ ${host} == *-mint* ]])
216 }
217
218 # @FUNCTION: tc-env_build
219 # @USAGE: <command> [command args]
220 # @INTERNAL
221 # @DESCRIPTION:
222 # Setup the compile environment to the build tools and then execute the
223 # specified command. We use tc-getBUILD_XX here so that we work with
224 # all of the semi-[non-]standard env vars like $BUILD_CC which often
225 # the target build system does not check.
226 tc-env_build() {
227 CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \
228 CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} \
229 CPPFLAGS=${BUILD_CPPFLAGS} \
230 LDFLAGS=${BUILD_LDFLAGS} \
231 AR=$(tc-getBUILD_AR) \
232 AS=$(tc-getBUILD_AS) \
233 CC=$(tc-getBUILD_CC) \
234 CPP=$(tc-getBUILD_CPP) \
235 CXX=$(tc-getBUILD_CXX) \
236 LD=$(tc-getBUILD_LD) \
237 NM=$(tc-getBUILD_NM) \
238 PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
239 RANLIB=$(tc-getBUILD_RANLIB) \
240 "$@"
241 }
242
243 # @FUNCTION: econf_build
244 # @USAGE: [econf flags]
245 # @DESCRIPTION:
246 # Sometimes we need to locally build up some tools to run on CBUILD because
247 # the package has helper utils which are compiled+executed when compiling.
248 # This won't work when cross-compiling as the CHOST is set to a target which
249 # we cannot natively execute.
250 #
251 # For example, the python package will build up a local python binary using
252 # a portable build system (configure+make), but then use that binary to run
253 # local python scripts to build up other components of the overall python.
254 # We cannot rely on the python binary in $PATH as that often times will be
255 # a different version, or not even installed in the first place. Instead,
256 # we compile the code in a different directory to run on CBUILD, and then
257 # use that binary when compiling the main package to run on CHOST.
258 #
259 # For example, with newer EAPIs, you'd do something like:
260 # @CODE
261 # src_configure() {
262 # ECONF_SOURCE=${S}
263 # if tc-is-cross-compiler ; then
264 # mkdir "${WORKDIR}"/${CBUILD}
265 # pushd "${WORKDIR}"/${CBUILD} >/dev/null
266 # econf_build --disable-some-unused-stuff
267 # popd >/dev/null
268 # fi
269 # ... normal build paths ...
270 # }
271 # src_compile() {
272 # if tc-is-cross-compiler ; then
273 # pushd "${WORKDIR}"/${CBUILD} >/dev/null
274 # emake one-or-two-build-tools
275 # ln/mv build-tools to normal build paths in ${S}/
276 # popd >/dev/null
277 # fi
278 # ... normal build paths ...
279 # }
280 # @CODE
281 econf_build() {
282 tc-env_build econf --build=${CBUILD:-${CHOST}} "$@"
283 }
284
285 # @FUNCTION: tc-has-openmp
286 # @USAGE: [toolchain prefix]
287 # @DESCRIPTION:
288 # See if the toolchain supports OpenMP.
289 tc-has-openmp() {
290 local base="${T}/test-tc-openmp"
291 cat <<-EOF > "${base}.c"
292 #include <omp.h>
293 int main() {
294 int nthreads, tid, ret = 0;
295 #pragma omp parallel private(nthreads, tid)
296 {
297 tid = omp_get_thread_num();
298 nthreads = omp_get_num_threads(); ret += tid + nthreads;
299 }
300 return ret;
301 }
302 EOF
303 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
304 local ret=$?
305 rm -f "${base}"*
306 return ${ret}
307 }
308
309 # @FUNCTION: tc-has-tls
310 # @USAGE: [-s|-c|-l] [toolchain prefix]
311 # @DESCRIPTION:
312 # See if the toolchain supports thread local storage (TLS). Use -s to test the
313 # compiler, -c to also test the assembler, and -l to also test the C library
314 # (the default).
315 tc-has-tls() {
316 local base="${T}/test-tc-tls"
317 cat <<-EOF > "${base}.c"
318 int foo(int *i) {
319 static __thread int j = 0;
320 return *i ? j : *i;
321 }
322 EOF
323 local flags
324 case $1 in
325 -s) flags="-S";;
326 -c) flags="-c";;
327 -l) ;;
328 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
329 esac
330 : ${flags:=-fPIC -shared -Wl,-z,defs}
331 [[ $1 == -* ]] && shift
332 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
333 local ret=$?
334 rm -f "${base}"*
335 return ${ret}
336 }
337
338
339 # Parse information from CBUILD/CHOST/CTARGET rather than
340 # use external variables from the profile.
341 tc-ninja_magic_to_arch() {
342 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
343
344 local type=$1
345 local host=$2
346 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
347
348 case ${host} in
349 alpha*) echo alpha;;
350 arm*) echo arm;;
351 avr*) ninj avr32 avr;;
352 bfin*) ninj blackfin bfin;;
353 cris*) echo cris;;
354 hppa*) ninj parisc hppa;;
355 i?86*)
356 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
357 # trees have been unified into 'x86'.
358 # FreeBSD still uses i386
359 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
360 echo i386
361 else
362 echo x86
363 fi
364 ;;
365 ia64*) echo ia64;;
366 m68*) echo m68k;;
367 mips*) echo mips;;
368 nios2*) echo nios2;;
369 nios*) echo nios;;
370 powerpc*)
371 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
372 # have been unified into simply 'powerpc', but until 2.6.16,
373 # ppc32 is still using ARCH="ppc" as default
374 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
375 echo powerpc
376 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
377 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
378 echo powerpc
379 else
380 echo ppc
381 fi
382 elif [[ ${host} == powerpc64* ]] ; then
383 echo ppc64
384 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
385 ninj ppc64 ppc
386 else
387 echo ppc
388 fi
389 ;;
390 s390*) echo s390;;
391 sh64*) ninj sh64 sh;;
392 sh*) echo sh;;
393 sparc64*) ninj sparc64 sparc;;
394 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
395 && ninj sparc64 sparc \
396 || echo sparc
397 ;;
398 vax*) echo vax;;
399 x86_64*freebsd*) echo amd64;;
400 x86_64*)
401 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
402 # trees have been unified into 'x86'.
403 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
404 echo x86
405 else
406 ninj x86_64 amd64
407 fi
408 ;;
409
410 # since our usage of tc-arch is largely concerned with
411 # normalizing inputs for testing ${CTARGET}, let's filter
412 # other cross targets (mingw and such) into the unknown.
413 *) echo unknown;;
414 esac
415 }
416 # @FUNCTION: tc-arch-kernel
417 # @USAGE: [toolchain prefix]
418 # @RETURN: name of the kernel arch according to the compiler target
419 tc-arch-kernel() {
420 tc-ninja_magic_to_arch kern "$@"
421 }
422 # @FUNCTION: tc-arch
423 # @USAGE: [toolchain prefix]
424 # @RETURN: name of the portage arch according to the compiler target
425 tc-arch() {
426 tc-ninja_magic_to_arch portage "$@"
427 }
428
429 tc-endian() {
430 local host=$1
431 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
432 host=${host%%-*}
433
434 case ${host} in
435 alpha*) echo big;;
436 arm*b*) echo big;;
437 arm*) echo little;;
438 cris*) echo little;;
439 hppa*) echo big;;
440 i?86*) echo little;;
441 ia64*) echo little;;
442 m68*) echo big;;
443 mips*l*) echo little;;
444 mips*) echo big;;
445 powerpc*) echo big;;
446 s390*) echo big;;
447 sh*b*) echo big;;
448 sh*) echo little;;
449 sparc*) echo big;;
450 x86_64*) echo little;;
451 *) echo wtf;;
452 esac
453 }
454
455 # Internal func. The first argument is the version info to expand.
456 # Query the preprocessor to improve compatibility across different
457 # compilers rather than maintaining a --version flag matrix. #335943
458 _gcc_fullversion() {
459 local ver="$1"; shift
460 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
461 eval echo "$ver"
462 }
463
464 # @FUNCTION: gcc-fullversion
465 # @RETURN: compiler version (major.minor.micro: [3.4.6])
466 gcc-fullversion() {
467 _gcc_fullversion '$1.$2.$3' "$@"
468 }
469 # @FUNCTION: gcc-version
470 # @RETURN: compiler version (major.minor: [3.4].6)
471 gcc-version() {
472 _gcc_fullversion '$1.$2' "$@"
473 }
474 # @FUNCTION: gcc-major-version
475 # @RETURN: major compiler version (major: [3].4.6)
476 gcc-major-version() {
477 _gcc_fullversion '$1' "$@"
478 }
479 # @FUNCTION: gcc-minor-version
480 # @RETURN: minor compiler version (minor: 3.[4].6)
481 gcc-minor-version() {
482 _gcc_fullversion '$2' "$@"
483 }
484 # @FUNCTION: gcc-micro-version
485 # @RETURN: micro compiler version (micro: 3.4.[6])
486 gcc-micro-version() {
487 _gcc_fullversion '$3' "$@"
488 }
489
490 # Returns the installation directory - internal toolchain
491 # function for use by _gcc-specs-exists (for flag-o-matic).
492 _gcc-install-dir() {
493 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
494 awk '$1=="install:" {print $2}')"
495 }
496 # Returns true if the indicated specs file exists - internal toolchain
497 # function for use by flag-o-matic.
498 _gcc-specs-exists() {
499 [[ -f $(_gcc-install-dir)/$1 ]]
500 }
501
502 # Returns requested gcc specs directive unprocessed - for used by
503 # gcc-specs-directive()
504 # Note; later specs normally overwrite earlier ones; however if a later
505 # spec starts with '+' then it appends.
506 # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
507 # as "Reading <file>", in order. Strictly speaking, if there's a
508 # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
509 # the same token anything from 'gcc -dumpspecs' is overridden by
510 # the contents of $(gcc_install_dir)/specs so the result is the
511 # same either way.
512 _gcc-specs-directive_raw() {
513 local cc=$(tc-getCC)
514 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
515 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
516 'BEGIN { pspec=""; spec=""; outside=1 }
517 $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
518 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
519 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
520 { spec=spec $0 }
521 END { print spec }'
522 return 0
523 }
524
525 # Return the requested gcc specs directive, with all included
526 # specs expanded.
527 # Note, it does not check for inclusion loops, which cause it
528 # to never finish - but such loops are invalid for gcc and we're
529 # assuming gcc is operational.
530 gcc-specs-directive() {
531 local directive subdname subdirective
532 directive="$(_gcc-specs-directive_raw $1)"
533 while [[ ${directive} == *%\(*\)* ]]; do
534 subdname=${directive/*%\(}
535 subdname=${subdname/\)*}
536 subdirective="$(_gcc-specs-directive_raw ${subdname})"
537 directive="${directive//\%(${subdname})/${subdirective}}"
538 done
539 echo "${directive}"
540 return 0
541 }
542
543 # Returns true if gcc sets relro
544 gcc-specs-relro() {
545 local directive
546 directive=$(gcc-specs-directive link_command)
547 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
548 }
549 # Returns true if gcc sets now
550 gcc-specs-now() {
551 local directive
552 directive=$(gcc-specs-directive link_command)
553 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
554 }
555 # Returns true if gcc builds PIEs
556 gcc-specs-pie() {
557 local directive
558 directive=$(gcc-specs-directive cc1)
559 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
560 }
561 # Returns true if gcc builds with the stack protector
562 gcc-specs-ssp() {
563 local directive
564 directive=$(gcc-specs-directive cc1)
565 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
566 }
567 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
568 gcc-specs-ssp-to-all() {
569 local directive
570 directive=$(gcc-specs-directive cc1)
571 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
572 }
573 # Returns true if gcc builds with fno-strict-overflow
574 gcc-specs-nostrict() {
575 local directive
576 directive=$(gcc-specs-directive cc1)
577 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
578 }
579
580
581 # @FUNCTION: gen_usr_ldscript
582 # @USAGE: [-a] <list of libs to create linker scripts for>
583 # @DESCRIPTION:
584 # This function generate linker scripts in /usr/lib for dynamic
585 # libs in /lib. This is to fix linking problems when you have
586 # the .so in /lib, and the .a in /usr/lib. What happens is that
587 # in some cases when linking dynamic, the .a in /usr/lib is used
588 # instead of the .so in /lib due to gcc/libtool tweaking ld's
589 # library search path. This causes many builds to fail.
590 # See bug #4411 for more info.
591 #
592 # Note that you should in general use the unversioned name of
593 # the library (libfoo.so), as ldconfig should usually update it
594 # correctly to point to the latest version of the library present.
595 gen_usr_ldscript() {
596 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
597 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
598
599 tc-is-static-only && return
600
601 # Just make sure it exists
602 dodir /usr/${libdir}
603
604 if [[ $1 == "-a" ]] ; then
605 auto=true
606 shift
607 dodir /${libdir}
608 fi
609
610 # OUTPUT_FORMAT gives hints to the linker as to what binary format
611 # is referenced ... makes multilib saner
612 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
613 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
614
615 for lib in "$@" ; do
616 local tlib
617 if ${auto} ; then
618 lib="lib${lib}${suffix}"
619 else
620 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
621 # This especially is for AIX where $(get_libname) can return ".a",
622 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
623 [[ -r ${ED}/${libdir}/${lib} ]] || continue
624 #TODO: better die here?
625 fi
626
627 case ${CTARGET:-${CHOST}} in
628 *-darwin*)
629 if ${auto} ; then
630 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
631 else
632 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
633 fi
634 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
635 tlib=${tlib##*/}
636
637 if ${auto} ; then
638 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
639 # some install_names are funky: they encode a version
640 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
641 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
642 fi
643 rm -f "${ED}"/${libdir}/${lib}
644 fi
645
646 # Mach-O files have an id, which is like a soname, it tells how
647 # another object linking against this lib should reference it.
648 # Since we moved the lib from usr/lib into lib this reference is
649 # wrong. Hence, we update it here. We don't configure with
650 # libdir=/lib because that messes up libtool files.
651 # Make sure we don't lose the specific version, so just modify the
652 # existing install_name
653 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
654 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
655 local nowrite=yes
656 fi
657 install_name_tool \
658 -id "${EPREFIX}"/${libdir}/${tlib} \
659 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
660 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
661 # Now as we don't use GNU binutils and our linker doesn't
662 # understand linker scripts, just create a symlink.
663 pushd "${ED}/usr/${libdir}" > /dev/null
664 ln -snf "../../${libdir}/${tlib}" "${lib}"
665 popd > /dev/null
666 ;;
667 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
668 if ${auto} ; then
669 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
670 # no way to retrieve soname on these platforms (?)
671 tlib=$(readlink "${ED}"/${libdir}/${lib})
672 tlib=${tlib##*/}
673 if [[ -z ${tlib} ]] ; then
674 # ok, apparently was not a symlink, don't remove it and
675 # just link to it
676 tlib=${lib}
677 else
678 rm -f "${ED}"/${libdir}/${lib}
679 fi
680 else
681 tlib=${lib}
682 fi
683
684 # we don't have GNU binutils on these platforms, so we symlink
685 # instead, which seems to work fine. Keep it relative, otherwise
686 # we break some QA checks in Portage
687 # on interix, the linker scripts would work fine in _most_
688 # situations. if a library links to such a linker script the
689 # absolute path to the correct library is inserted into the binary,
690 # which is wrong, since anybody linking _without_ libtool will miss
691 # some dependencies, since the stupid linker cannot find libraries
692 # hardcoded with absolute paths (as opposed to the loader, which
693 # seems to be able to do this).
694 # this has been seen while building shared-mime-info which needs
695 # libxml2, but links without libtool (and does not add libz to the
696 # command line by itself).
697 pushd "${ED}/usr/${libdir}" > /dev/null
698 ln -snf "../../${libdir}/${tlib}" "${lib}"
699 popd > /dev/null
700 ;;
701 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
702 if ${auto} ; then
703 tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
704 [[ -z ${tlib} ]] && tlib=${lib}
705 tlib=${tlib##*/} # 'internal name' can have a path component
706 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
707 # some SONAMEs are funky: they encode a version before the .so
708 if [[ ${tlib} != ${lib}* ]] ; then
709 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
710 fi
711 [[ ${tlib} != ${lib} ]] &&
712 rm -f "${ED}"/${libdir}/${lib}
713 else
714 tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
715 [[ -z ${tlib} ]] && tlib=${lib}
716 tlib=${tlib##*/} # 'internal name' can have a path component
717 fi
718 pushd "${ED}"/usr/${libdir} >/dev/null
719 ln -snf "../../${libdir}/${tlib}" "${lib}"
720 # need the internal name in usr/lib too, to be available at runtime
721 # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
722 [[ ${tlib} != ${lib} ]] &&
723 ln -snf "../../${libdir}/${tlib}" "${tlib}"
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
758 fi

  ViewVC Help
Powered by ViewVC 1.1.20