/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.104 - (show annotations) (download)
Tue Jul 12 14:29:41 2011 UTC (2 years, 11 months ago) by aballier
Branch: MAIN
Changes since 1.103: +2 -1 lines
output correct kernel directory for amd64-fbsd in tc-arch-kernel, bug #374893

1 # Copyright 1999-2007 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 1.103 2010/10/28 04:16:27 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 ___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
17 [[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
18
19 DESCRIPTION="Based on the ${ECLASS} eclass"
20
21 tc-getPROG() {
22 local var=$1
23 local prog=$2
24
25 if [[ -n ${!var} ]] ; then
26 echo "${!var}"
27 return 0
28 fi
29
30 local search=
31 [[ -n $3 ]] && search=$(type -p "$3-${prog}")
32 [[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${prog}")
33 [[ -n ${search} ]] && prog=${search##*/}
34
35 export ${var}=${prog}
36 echo "${!var}"
37 }
38
39 # @FUNCTION: tc-getAR
40 # @USAGE: [toolchain prefix]
41 # @RETURN: name of the archiver
42 tc-getAR() { tc-getPROG AR ar "$@"; }
43 # @FUNCTION: tc-getAS
44 # @USAGE: [toolchain prefix]
45 # @RETURN: name of the assembler
46 tc-getAS() { tc-getPROG AS as "$@"; }
47 # @FUNCTION: tc-getCC
48 # @USAGE: [toolchain prefix]
49 # @RETURN: name of the C compiler
50 tc-getCC() { tc-getPROG CC gcc "$@"; }
51 # @FUNCTION: tc-getCPP
52 # @USAGE: [toolchain prefix]
53 # @RETURN: name of the C preprocessor
54 tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55 # @FUNCTION: tc-getCXX
56 # @USAGE: [toolchain prefix]
57 # @RETURN: name of the C++ compiler
58 tc-getCXX() { tc-getPROG CXX g++ "$@"; }
59 # @FUNCTION: tc-getLD
60 # @USAGE: [toolchain prefix]
61 # @RETURN: name of the linker
62 tc-getLD() { tc-getPROG LD ld "$@"; }
63 # @FUNCTION: tc-getSTRIP
64 # @USAGE: [toolchain prefix]
65 # @RETURN: name of the strip program
66 tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67 # @FUNCTION: tc-getNM
68 # @USAGE: [toolchain prefix]
69 # @RETURN: name of the symbol/object thingy
70 tc-getNM() { tc-getPROG NM nm "$@"; }
71 # @FUNCTION: tc-getRANLIB
72 # @USAGE: [toolchain prefix]
73 # @RETURN: name of the archiver indexer
74 tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
75 # @FUNCTION: tc-getOBJCOPY
76 # @USAGE: [toolchain prefix]
77 # @RETURN: name of the object copier
78 tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
79 # @FUNCTION: tc-getF77
80 # @USAGE: [toolchain prefix]
81 # @RETURN: name of the Fortran 77 compiler
82 tc-getF77() { tc-getPROG F77 gfortran "$@"; }
83 # @FUNCTION: tc-getFC
84 # @USAGE: [toolchain prefix]
85 # @RETURN: name of the Fortran 90 compiler
86 tc-getFC() { tc-getPROG FC gfortran "$@"; }
87 # @FUNCTION: tc-getGCJ
88 # @USAGE: [toolchain prefix]
89 # @RETURN: name of the java compiler
90 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
91 # @FUNCTION: tc-getPKG_CONFIG
92 # @USAGE: [toolchain prefix]
93 # @RETURN: name of the pkg-config tool
94 tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
95 # @FUNCTION: tc-getRC
96 # @USAGE: [toolchain prefix]
97 # @RETURN: name of the Windows resource compiler
98 tc-getRC() { tc-getPROG RC windres "$@"; }
99 # @FUNCTION: tc-getDLLWRAP
100 # @USAGE: [toolchain prefix]
101 # @RETURN: name of the Windows dllwrap utility
102 tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
103
104 # @FUNCTION: tc-getBUILD_CC
105 # @USAGE: [toolchain prefix]
106 # @RETURN: name of the C compiler for building binaries to run on the build machine
107 tc-getBUILD_CC() {
108 local v
109 for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
110 if [[ -n ${!v} ]] ; then
111 export BUILD_CC=${!v}
112 echo "${!v}"
113 return 0
114 fi
115 done
116
117 local search=
118 if [[ -n ${CBUILD} ]] ; then
119 search=$(type -p ${CBUILD}-gcc)
120 search=${search##*/}
121 fi
122 search=${search:-gcc}
123
124 export BUILD_CC=${search}
125 echo "${search}"
126 }
127
128 # @FUNCTION: tc-export
129 # @USAGE: <list of toolchain variables>
130 # @DESCRIPTION:
131 # Quick way to export a bunch of compiler vars at once.
132 tc-export() {
133 local var
134 for var in "$@" ; do
135 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
136 eval tc-get${var} > /dev/null
137 done
138 }
139
140 # @FUNCTION: tc-is-cross-compiler
141 # @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
142 tc-is-cross-compiler() {
143 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
144 }
145
146 # @FUNCTION: tc-is-softfloat
147 # @DESCRIPTION:
148 # See if this toolchain is a softfloat based one.
149 # @CODE
150 # The possible return values:
151 # - only: the target is always softfloat (never had fpu)
152 # - yes: the target should support softfloat
153 # - no: the target doesn't support softfloat
154 # @CODE
155 # This allows us to react differently where packages accept
156 # softfloat flags in the case where support is optional, but
157 # rejects softfloat flags where the target always lacks an fpu.
158 tc-is-softfloat() {
159 case ${CTARGET} in
160 bfin*|h8300*)
161 echo "only" ;;
162 *)
163 [[ ${CTARGET//_/-} == *-softfloat-* ]] \
164 && echo "yes" \
165 || echo "no"
166 ;;
167 esac
168 }
169
170 # @FUNCTION: tc-is-hardfloat
171 # @DESCRIPTION:
172 # See if this toolchain is a hardfloat based one.
173 # @CODE
174 # The possible return values:
175 # - yes: the target should support hardfloat
176 # - no: the target doesn't support hardfloat
177 tc-is-hardfloat() {
178 [[ ${CTARGET//_/-} == *-hardfloat-* ]] \
179 && echo "yes" \
180 || echo "no"
181 }
182
183 # @FUNCTION: tc-is-static-only
184 # @DESCRIPTION:
185 # Return shell true if the target does not support shared libs, shell false
186 # otherwise.
187 tc-is-static-only() {
188 local host=${CTARGET:-${CHOST}}
189
190 # *MiNT doesn't have shared libraries, only platform so far
191 return $([[ ${host} == *-mint* ]])
192 }
193
194 # @FUNCTION: tc-has-openmp
195 # @USAGE: [toolchain prefix]
196 # @DESCRIPTION:
197 # See if the toolchain supports OpenMP.
198 tc-has-openmp() {
199 local base="${T}/test-tc-openmp"
200 cat <<-EOF > "${base}.c"
201 #include <omp.h>
202 int main() {
203 int nthreads, tid, ret = 0;
204 #pragma omp parallel private(nthreads, tid)
205 {
206 tid = omp_get_thread_num();
207 nthreads = omp_get_num_threads(); ret += tid + nthreads;
208 }
209 return ret;
210 }
211 EOF
212 $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
213 local ret=$?
214 rm -f "${base}"*
215 return ${ret}
216 }
217
218 # @FUNCTION: tc-has-tls
219 # @USAGE: [-s|-c|-l] [toolchain prefix]
220 # @DESCRIPTION:
221 # See if the toolchain supports thread local storage (TLS). Use -s to test the
222 # compiler, -c to also test the assembler, and -l to also test the C library
223 # (the default).
224 tc-has-tls() {
225 local base="${T}/test-tc-tls"
226 cat <<-EOF > "${base}.c"
227 int foo(int *i) {
228 static __thread int j = 0;
229 return *i ? j : *i;
230 }
231 EOF
232 local flags
233 case $1 in
234 -s) flags="-S";;
235 -c) flags="-c";;
236 -l) ;;
237 -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
238 esac
239 : ${flags:=-fPIC -shared -Wl,-z,defs}
240 [[ $1 == -* ]] && shift
241 $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
242 local ret=$?
243 rm -f "${base}"*
244 return ${ret}
245 }
246
247
248 # Parse information from CBUILD/CHOST/CTARGET rather than
249 # use external variables from the profile.
250 tc-ninja_magic_to_arch() {
251 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
252
253 local type=$1
254 local host=$2
255 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
256
257 case ${host} in
258 alpha*) echo alpha;;
259 arm*) echo arm;;
260 avr*) ninj avr32 avr;;
261 bfin*) ninj blackfin bfin;;
262 cris*) echo cris;;
263 hppa*) ninj parisc hppa;;
264 i?86*)
265 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
266 # trees have been unified into 'x86'.
267 # FreeBSD still uses i386
268 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
269 echo i386
270 else
271 echo x86
272 fi
273 ;;
274 ia64*) echo ia64;;
275 m68*) echo m68k;;
276 mips*) echo mips;;
277 nios2*) echo nios2;;
278 nios*) echo nios;;
279 powerpc*)
280 # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
281 # have been unified into simply 'powerpc', but until 2.6.16,
282 # ppc32 is still using ARCH="ppc" as default
283 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then
284 echo powerpc
285 elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then
286 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
287 echo powerpc
288 else
289 echo ppc
290 fi
291 elif [[ ${host} == powerpc64* ]] ; then
292 echo ppc64
293 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
294 ninj ppc64 ppc
295 else
296 echo ppc
297 fi
298 ;;
299 s390*) echo s390;;
300 sh64*) ninj sh64 sh;;
301 sh*) echo sh;;
302 sparc64*) ninj sparc64 sparc;;
303 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
304 && ninj sparc64 sparc \
305 || echo sparc
306 ;;
307 vax*) echo vax;;
308 x86_64*freebsd*) echo amd64;;
309 x86_64*)
310 # Starting with linux-2.6.24, the 'x86_64' and 'i386'
311 # trees have been unified into 'x86'.
312 if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
313 echo x86
314 else
315 ninj x86_64 amd64
316 fi
317 ;;
318
319 # since our usage of tc-arch is largely concerned with
320 # normalizing inputs for testing ${CTARGET}, let's filter
321 # other cross targets (mingw and such) into the unknown.
322 *) echo unknown;;
323 esac
324 }
325 # @FUNCTION: tc-arch-kernel
326 # @USAGE: [toolchain prefix]
327 # @RETURN: name of the kernel arch according to the compiler target
328 tc-arch-kernel() {
329 tc-ninja_magic_to_arch kern "$@"
330 }
331 # @FUNCTION: tc-arch
332 # @USAGE: [toolchain prefix]
333 # @RETURN: name of the portage arch according to the compiler target
334 tc-arch() {
335 tc-ninja_magic_to_arch portage "$@"
336 }
337
338 tc-endian() {
339 local host=$1
340 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
341 host=${host%%-*}
342
343 case ${host} in
344 alpha*) echo big;;
345 arm*b*) echo big;;
346 arm*) echo little;;
347 cris*) echo little;;
348 hppa*) echo big;;
349 i?86*) echo little;;
350 ia64*) echo little;;
351 m68*) echo big;;
352 mips*l*) echo little;;
353 mips*) echo big;;
354 powerpc*) echo big;;
355 s390*) echo big;;
356 sh*b*) echo big;;
357 sh*) echo little;;
358 sparc*) echo big;;
359 x86_64*) echo little;;
360 *) echo wtf;;
361 esac
362 }
363
364 # Internal func. The first argument is the version info to expand.
365 # Query the preprocessor to improve compatibility across different
366 # compilers rather than maintaining a --version flag matrix. #335943
367 _gcc_fullversion() {
368 local ver="$1"; shift
369 set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"`
370 eval echo "$ver"
371 }
372
373 # @FUNCTION: gcc-fullversion
374 # @RETURN: compiler version (major.minor.micro: [3.4.6])
375 gcc-fullversion() {
376 _gcc_fullversion '$1.$2.$3' "$@"
377 }
378 # @FUNCTION: gcc-version
379 # @RETURN: compiler version (major.minor: [3.4].6)
380 gcc-version() {
381 _gcc_fullversion '$1.$2' "$@"
382 }
383 # @FUNCTION: gcc-major-version
384 # @RETURN: major compiler version (major: [3].4.6)
385 gcc-major-version() {
386 _gcc_fullversion '$1' "$@"
387 }
388 # @FUNCTION: gcc-minor-version
389 # @RETURN: minor compiler version (minor: 3.[4].6)
390 gcc-minor-version() {
391 _gcc_fullversion '$2' "$@"
392 }
393 # @FUNCTION: gcc-micro-version
394 # @RETURN: micro compiler version (micro: 3.4.[6])
395 gcc-micro-version() {
396 _gcc_fullversion '$3' "$@"
397 }
398
399 # Returns the installation directory - internal toolchain
400 # function for use by _gcc-specs-exists (for flag-o-matic).
401 _gcc-install-dir() {
402 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
403 awk '$1=="install:" {print $2}')"
404 }
405 # Returns true if the indicated specs file exists - internal toolchain
406 # function for use by flag-o-matic.
407 _gcc-specs-exists() {
408 [[ -f $(_gcc-install-dir)/$1 ]]
409 }
410
411 # Returns requested gcc specs directive unprocessed - for used by
412 # gcc-specs-directive()
413 # Note; later specs normally overwrite earlier ones; however if a later
414 # spec starts with '+' then it appends.
415 # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
416 # as "Reading <file>", in order. Strictly speaking, if there's a
417 # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
418 # the same token anything from 'gcc -dumpspecs' is overridden by
419 # the contents of $(gcc_install_dir)/specs so the result is the
420 # same either way.
421 _gcc-specs-directive_raw() {
422 local cc=$(tc-getCC)
423 local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
424 ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
425 'BEGIN { pspec=""; spec=""; outside=1 }
426 $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
427 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
428 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
429 { spec=spec $0 }
430 END { print spec }'
431 return 0
432 }
433
434 # Return the requested gcc specs directive, with all included
435 # specs expanded.
436 # Note, it does not check for inclusion loops, which cause it
437 # to never finish - but such loops are invalid for gcc and we're
438 # assuming gcc is operational.
439 gcc-specs-directive() {
440 local directive subdname subdirective
441 directive="$(_gcc-specs-directive_raw $1)"
442 while [[ ${directive} == *%\(*\)* ]]; do
443 subdname=${directive/*%\(}
444 subdname=${subdname/\)*}
445 subdirective="$(_gcc-specs-directive_raw ${subdname})"
446 directive="${directive//\%(${subdname})/${subdirective}}"
447 done
448 echo "${directive}"
449 return 0
450 }
451
452 # Returns true if gcc sets relro
453 gcc-specs-relro() {
454 local directive
455 directive=$(gcc-specs-directive link_command)
456 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
457 }
458 # Returns true if gcc sets now
459 gcc-specs-now() {
460 local directive
461 directive=$(gcc-specs-directive link_command)
462 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
463 }
464 # Returns true if gcc builds PIEs
465 gcc-specs-pie() {
466 local directive
467 directive=$(gcc-specs-directive cc1)
468 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
469 }
470 # Returns true if gcc builds with the stack protector
471 gcc-specs-ssp() {
472 local directive
473 directive=$(gcc-specs-directive cc1)
474 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
475 }
476 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
477 gcc-specs-ssp-to-all() {
478 local directive
479 directive=$(gcc-specs-directive cc1)
480 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
481 }
482 # Returns true if gcc builds with fno-strict-overflow
483 gcc-specs-nostrict() {
484 local directive
485 directive=$(gcc-specs-directive cc1)
486 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
487 }
488
489
490 # @FUNCTION: gen_usr_ldscript
491 # @USAGE: [-a] <list of libs to create linker scripts for>
492 # @DESCRIPTION:
493 # This function generate linker scripts in /usr/lib for dynamic
494 # libs in /lib. This is to fix linking problems when you have
495 # the .so in /lib, and the .a in /usr/lib. What happens is that
496 # in some cases when linking dynamic, the .a in /usr/lib is used
497 # instead of the .so in /lib due to gcc/libtool tweaking ld's
498 # library search path. This causes many builds to fail.
499 # See bug #4411 for more info.
500 #
501 # Note that you should in general use the unversioned name of
502 # the library (libfoo.so), as ldconfig should usually update it
503 # correctly to point to the latest version of the library present.
504 gen_usr_ldscript() {
505 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
506 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
507
508 tc-is-static-only && return
509
510 # Just make sure it exists
511 dodir /usr/${libdir}
512
513 if [[ $1 == "-a" ]] ; then
514 auto=true
515 shift
516 dodir /${libdir}
517 fi
518
519 # OUTPUT_FORMAT gives hints to the linker as to what binary format
520 # is referenced ... makes multilib saner
521 output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
522 [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
523
524 for lib in "$@" ; do
525 local tlib
526 if ${auto} ; then
527 lib="lib${lib}${suffix}"
528 else
529 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
530 # This especially is for AIX where $(get_libname) can return ".a",
531 # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
532 [[ -r ${ED}/${libdir}/${lib} ]] || continue
533 #TODO: better die here?
534 fi
535
536 case ${CTARGET:-${CHOST}} in
537 *-darwin*)
538 if ${auto} ; then
539 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
540 else
541 tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
542 fi
543 [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
544 tlib=${tlib##*/}
545
546 if ${auto} ; then
547 mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
548 # some install_names are funky: they encode a version
549 if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
550 mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
551 fi
552 rm -f "${ED}"/${libdir}/${lib}
553 fi
554
555 # Mach-O files have an id, which is like a soname, it tells how
556 # another object linking against this lib should reference it.
557 # Since we moved the lib from usr/lib into lib this reference is
558 # wrong. Hence, we update it here. We don't configure with
559 # libdir=/lib because that messes up libtool files.
560 # Make sure we don't lose the specific version, so just modify the
561 # existing install_name
562 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
563 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
564 local nowrite=yes
565 fi
566 install_name_tool \
567 -id "${EPREFIX}"/${libdir}/${tlib} \
568 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
569 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
570 # Now as we don't use GNU binutils and our linker doesn't
571 # understand linker scripts, just create a symlink.
572 pushd "${ED}/usr/${libdir}" > /dev/null
573 ln -snf "../../${libdir}/${tlib}" "${lib}"
574 popd > /dev/null
575 ;;
576 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
577 if ${auto} ; then
578 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
579 # no way to retrieve soname on these platforms (?)
580 tlib=$(readlink "${ED}"/${libdir}/${lib})
581 tlib=${tlib##*/}
582 if [[ -z ${tlib} ]] ; then
583 # ok, apparently was not a symlink, don't remove it and
584 # just link to it
585 tlib=${lib}
586 else
587 rm -f "${ED}"/${libdir}/${lib}
588 fi
589 else
590 tlib=${lib}
591 fi
592
593 # we don't have GNU binutils on these platforms, so we symlink
594 # instead, which seems to work fine. Keep it relative, otherwise
595 # we break some QA checks in Portage
596 # on interix, the linker scripts would work fine in _most_
597 # situations. if a library links to such a linker script the
598 # absolute path to the correct library is inserted into the binary,
599 # which is wrong, since anybody linking _without_ libtool will miss
600 # some dependencies, since the stupid linker cannot find libraries
601 # hardcoded with absolute paths (as opposed to the loader, which
602 # seems to be able to do this).
603 # this has been seen while building shared-mime-info which needs
604 # libxml2, but links without libtool (and does not add libz to the
605 # command line by itself).
606 pushd "${ED}/usr/${libdir}" > /dev/null
607 ln -snf "../../${libdir}/${tlib}" "${lib}"
608 popd > /dev/null
609 ;;
610 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
611 if ${auto} ; then
612 tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
613 [[ -z ${tlib} ]] && tlib=${lib}
614 tlib=${tlib##*/} # 'internal name' can have a path component
615 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
616 # some SONAMEs are funky: they encode a version before the .so
617 if [[ ${tlib} != ${lib}* ]] ; then
618 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
619 fi
620 [[ ${tlib} != ${lib} ]] &&
621 rm -f "${ED}"/${libdir}/${lib}
622 else
623 tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
624 [[ -z ${tlib} ]] && tlib=${lib}
625 tlib=${tlib##*/} # 'internal name' can have a path component
626 fi
627 pushd "${ED}"/usr/${libdir} >/dev/null
628 ln -snf "../../${libdir}/${tlib}" "${lib}"
629 # need the internal name in usr/lib too, to be available at runtime
630 # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
631 [[ ${tlib} != ${lib} ]] &&
632 ln -snf "../../${libdir}/${tlib}" "${tlib}"
633 popd >/dev/null
634 ;;
635 *)
636 if ${auto} ; then
637 tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
638 [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
639 mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
640 # some SONAMEs are funky: they encode a version before the .so
641 if [[ ${tlib} != ${lib}* ]] ; then
642 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
643 fi
644 rm -f "${ED}"/${libdir}/${lib}
645 else
646 tlib=${lib}
647 fi
648 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
649 /* GNU ld script
650 Since Gentoo has critical dynamic libraries in /lib, and the static versions
651 in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
652 run into linking problems. This "fake" dynamic lib is a linker script that
653 redirects the linker to the real lib. And yes, this works in the cross-
654 compiling scenario as the sysroot-ed linker will prepend the real path.
655
656 See bug http://bugs.gentoo.org/4411 for more info.
657 */
658 ${output_format}
659 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
660 END_LDSCRIPT
661 ;;
662 esac
663 fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
664 done
665 }

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