/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.93 - (hide annotations) (download)
Sat Aug 15 15:12:56 2009 UTC (4 years, 11 months ago) by grobian
Branch: MAIN
Changes since 1.92: +27 -2 lines
add HPUX support for gen_usr_ldscript from Prefix

1 vapier 1.67 # Copyright 1999-2007 Gentoo Foundation
2 vapier 1.1 # Distributed under the terms of the GNU General Public License v2
3 grobian 1.93 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.92 2009/08/15 15:11:17 grobian Exp $
4 vapier 1.74
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 vapier 1.1
16 vapier 1.69 ___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes"
17     [[ -z ${___ECLASS_RECUR_MULTILIB} ]] && inherit multilib
18 eradicator 1.34
19 vapier 1.1 DESCRIPTION="Based on the ${ECLASS} eclass"
20    
21     tc-getPROG() {
22 vapier 1.33 local var=$1
23     local prog=$2
24 vapier 1.1
25 vapier 1.17 if [[ -n ${!var} ]] ; then
26 vapier 1.1 echo "${!var}"
27     return 0
28     fi
29    
30 eradicator 1.35 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 vapier 1.1
35 vapier 1.17 export ${var}=${prog}
36 vapier 1.1 echo "${!var}"
37     }
38    
39 vapier 1.74 # @FUNCTION: tc-getAR
40     # @USAGE: [toolchain prefix]
41     # @RETURN: name of the archiver
42 vapier 1.33 tc-getAR() { tc-getPROG AR ar "$@"; }
43 vapier 1.74 # @FUNCTION: tc-getAS
44     # @USAGE: [toolchain prefix]
45     # @RETURN: name of the assembler
46 vapier 1.33 tc-getAS() { tc-getPROG AS as "$@"; }
47 vapier 1.74 # @FUNCTION: tc-getCC
48     # @USAGE: [toolchain prefix]
49     # @RETURN: name of the C compiler
50 vapier 1.33 tc-getCC() { tc-getPROG CC gcc "$@"; }
51 vapier 1.74 # @FUNCTION: tc-getCPP
52     # @USAGE: [toolchain prefix]
53     # @RETURN: name of the C preprocessor
54 robbat2 1.58 tc-getCPP() { tc-getPROG CPP cpp "$@"; }
55 vapier 1.74 # @FUNCTION: tc-getCXX
56     # @USAGE: [toolchain prefix]
57     # @RETURN: name of the C++ compiler
58 vapier 1.33 tc-getCXX() { tc-getPROG CXX g++ "$@"; }
59 vapier 1.74 # @FUNCTION: tc-getLD
60     # @USAGE: [toolchain prefix]
61     # @RETURN: name of the linker
62 vapier 1.33 tc-getLD() { tc-getPROG LD ld "$@"; }
63 vapier 1.74 # @FUNCTION: tc-getSTRIP
64     # @USAGE: [toolchain prefix]
65     # @RETURN: name of the strip program
66 kanaka 1.59 tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
67 vapier 1.74 # @FUNCTION: tc-getNM
68     # @USAGE: [toolchain prefix]
69     # @RETURN: name of the symbol/object thingy
70 vapier 1.33 tc-getNM() { tc-getPROG NM nm "$@"; }
71 vapier 1.74 # @FUNCTION: tc-getRANLIB
72     # @USAGE: [toolchain prefix]
73     # @RETURN: name of the archiver indexer
74 vapier 1.33 tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
75 kumba 1.86 # @FUNCTION: tc-getOBJCOPY
76     # @USAGE: [toolchain prefix]
77     # @RETURN: name of the object copier
78     tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
79 vapier 1.74 # @FUNCTION: tc-getF77
80     # @USAGE: [toolchain prefix]
81     # @RETURN: name of the Fortran 77 compiler
82 kanaka 1.59 tc-getF77() { tc-getPROG F77 f77 "$@"; }
83 dberkholz 1.78 # @FUNCTION: tc-getFC
84 vapier 1.74 # @USAGE: [toolchain prefix]
85     # @RETURN: name of the Fortran 90 compiler
86 dberkholz 1.78 tc-getFC() { tc-getPROG FC gfortran "$@"; }
87 vapier 1.74 # @FUNCTION: tc-getGCJ
88     # @USAGE: [toolchain prefix]
89     # @RETURN: name of the java compiler
90 vapier 1.33 tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
91 vapier 1.1
92 vapier 1.74 # @FUNCTION: tc-getBUILD_CC
93     # @USAGE: [toolchain prefix]
94     # @RETURN: name of the C compiler for building binaries to run on the build machine
95 vapier 1.4 tc-getBUILD_CC() {
96 vapier 1.43 local v
97     for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do
98     if [[ -n ${!v} ]] ; then
99     export BUILD_CC=${!v}
100     echo "${!v}"
101     return 0
102     fi
103     done
104 vapier 1.4
105 vapier 1.9 local search=
106 vapier 1.17 if [[ -n ${CBUILD} ]] ; then
107 vapier 1.21 search=$(type -p ${CBUILD}-gcc)
108 vapier 1.17 search=${search##*/}
109 vapier 1.9 fi
110 vapier 1.45 search=${search:-gcc}
111 vapier 1.11
112 vapier 1.17 export BUILD_CC=${search}
113 vapier 1.11 echo "${search}"
114 vapier 1.4 }
115 vapier 1.1
116 vapier 1.74 # @FUNCTION: tc-export
117     # @USAGE: <list of toolchain variables>
118     # @DESCRIPTION:
119     # Quick way to export a bunch of compiler vars at once.
120 vapier 1.10 tc-export() {
121     local var
122     for var in "$@" ; do
123 vapier 1.79 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
124 vapier 1.36 eval tc-get${var} > /dev/null
125 vapier 1.10 done
126     }
127    
128 vapier 1.74 # @FUNCTION: tc-is-cross-compiler
129     # @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
130 vapier 1.12 tc-is-cross-compiler() {
131 vapier 1.43 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
132 vapier 1.12 }
133    
134 vapier 1.74 # @FUNCTION: tc-is-softfloat
135     # @DESCRIPTION:
136 vapier 1.65 # See if this toolchain is a softfloat based one.
137 vapier 1.74 # @CODE
138 vapier 1.65 # The possible return values:
139     # - only: the target is always softfloat (never had fpu)
140     # - yes: the target should support softfloat
141     # - no: the target should support hardfloat
142 vapier 1.74 # @CODE
143 vapier 1.65 # This allows us to react differently where packages accept
144     # softfloat flags in the case where support is optional, but
145     # rejects softfloat flags where the target always lacks an fpu.
146     tc-is-softfloat() {
147     case ${CTARGET} in
148 vapier 1.66 bfin*|h8300*)
149 vapier 1.65 echo "only" ;;
150     *)
151     [[ ${CTARGET//_/-} == *-softfloat-* ]] \
152     && echo "yes" \
153     || echo "no"
154     ;;
155     esac
156     }
157 vapier 1.1
158 grobian 1.91 # @FUNCTION: tc-is-static-only
159     # @DESCRIPTION:
160     # Return shell true if the target does not support shared libs, shell false
161     # otherwise.
162     tc-is-static-only() {
163     local host=${CTARGET:-${CHOST}}
164    
165     # *MiNT doesn't have shared libraries, only platform so far
166     return $([[ ${host} == *-mint* ]])
167     }
168    
169    
170 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
171 vapier 1.20 # use external variables from the profile.
172     tc-ninja_magic_to_arch() {
173 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
174 vapier 1.19
175     local type=$1
176     local host=$2
177 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
178 vapier 1.19
179     case ${host} in
180     alpha*) echo alpha;;
181     arm*) echo arm;;
182 vapier 1.72 avr*) ninj avr32 avr;;
183 vapier 1.53 bfin*) ninj blackfin bfin;;
184 vapier 1.47 cris*) echo cris;;
185 vapier 1.19 hppa*) ninj parisc hppa;;
186 vapier 1.75 i?86*)
187     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
188     # trees have been unified into 'x86'.
189 aballier 1.77 # FreeBSD still uses i386
190     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
191 vapier 1.75 echo i386
192     else
193     echo x86
194     fi
195     ;;
196 vapier 1.19 ia64*) echo ia64;;
197 vapier 1.23 m68*) echo m68k;;
198 vapier 1.19 mips*) echo mips;;
199 vapier 1.52 nios2*) echo nios2;;
200     nios*) echo nios;;
201 vapier 1.49 powerpc*)
202     # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
203 josejx 1.54 # have been unified into simply 'powerpc', but until 2.6.16,
204     # ppc32 is still using ARCH="ppc" as default
205     if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
206 vapier 1.49 echo powerpc
207 josejx 1.54 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
208 dostrow 1.55 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
209 josejx 1.54 echo powerpc
210     else
211     echo ppc
212 swegener 1.56 fi
213 vapier 1.49 elif [[ ${host} == powerpc64* ]] ; then
214     echo ppc64
215 dostrow 1.51 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
216     ninj ppc64 ppc
217 vapier 1.49 else
218     echo ppc
219     fi
220 dostrow 1.37 ;;
221 vapier 1.47 s390*) echo s390;;
222     sh64*) ninj sh64 sh;;
223     sh*) echo sh;;
224 vapier 1.19 sparc64*) ninj sparc64 sparc;;
225 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
226     && ninj sparc64 sparc \
227     || echo sparc
228     ;;
229 vapier 1.47 vax*) echo vax;;
230 vapier 1.75 x86_64*)
231     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
232     # trees have been unified into 'x86'.
233     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
234     echo x86
235     else
236     ninj x86_64 amd64
237     fi
238     ;;
239 vapier 1.73
240     # since our usage of tc-arch is largely concerned with
241     # normalizing inputs for testing ${CTARGET}, let's filter
242     # other cross targets (mingw and such) into the unknown.
243     *) echo unknown;;
244 vapier 1.19 esac
245     }
246 vapier 1.74 # @FUNCTION: tc-arch-kernel
247     # @USAGE: [toolchain prefix]
248     # @RETURN: name of the kernel arch according to the compiler target
249 vapier 1.20 tc-arch-kernel() {
250 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
251 vapier 1.19 }
252 vapier 1.74 # @FUNCTION: tc-arch
253     # @USAGE: [toolchain prefix]
254     # @RETURN: name of the portage arch according to the compiler target
255 vapier 1.20 tc-arch() {
256 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
257 vapier 1.19 }
258 vapier 1.74
259 robbat2 1.71 tc-endian() {
260     local host=$1
261     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
262     host=${host%%-*}
263    
264     case ${host} in
265     alpha*) echo big;;
266     arm*b*) echo big;;
267     arm*) echo little;;
268     cris*) echo little;;
269     hppa*) echo big;;
270     i?86*) echo little;;
271     ia64*) echo little;;
272     m68*) echo big;;
273     mips*l*) echo little;;
274     mips*) echo big;;
275     powerpc*) echo big;;
276     s390*) echo big;;
277     sh*b*) echo big;;
278     sh*) echo little;;
279     sparc*) echo big;;
280     x86_64*) echo little;;
281     *) echo wtf;;
282     esac
283     }
284 vapier 1.19
285 vapier 1.74 # @FUNCTION: gcc-fullversion
286     # @RETURN: compiler version (major.minor.micro: [3.4.6])
287 vapier 1.1 gcc-fullversion() {
288 vapier 1.63 $(tc-getCC "$@") -dumpversion
289 vapier 1.1 }
290 vapier 1.74 # @FUNCTION: gcc-version
291     # @RETURN: compiler version (major.minor: [3.4].6)
292 vapier 1.1 gcc-version() {
293 vapier 1.63 gcc-fullversion "$@" | cut -f1,2 -d.
294 vapier 1.1 }
295 vapier 1.74 # @FUNCTION: gcc-major-version
296     # @RETURN: major compiler version (major: [3].4.6)
297 vapier 1.1 gcc-major-version() {
298 vapier 1.63 gcc-version "$@" | cut -f1 -d.
299 vapier 1.1 }
300 vapier 1.74 # @FUNCTION: gcc-minor-version
301     # @RETURN: minor compiler version (minor: 3.[4].6)
302 vapier 1.1 gcc-minor-version() {
303 vapier 1.63 gcc-version "$@" | cut -f2 -d.
304 vapier 1.1 }
305 vapier 1.74 # @FUNCTION: gcc-micro-version
306     # @RETURN: micro compiler version (micro: 3.4.[6])
307 vapier 1.1 gcc-micro-version() {
308 vapier 1.63 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
309 vapier 1.1 }
310 vapier 1.74
311 kevquinn 1.68 # Returns the installation directory - internal toolchain
312     # function for use by _gcc-specs-exists (for flag-o-matic).
313     _gcc-install-dir() {
314 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
315 kevquinn 1.68 awk '$1=="install:" {print $2}')"
316     }
317     # Returns true if the indicated specs file exists - internal toolchain
318     # function for use by flag-o-matic.
319     _gcc-specs-exists() {
320     [[ -f $(_gcc-install-dir)/$1 ]]
321     }
322 kevquinn 1.41
323 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
324     # gcc-specs-directive()
325 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
326     # spec starts with '+' then it appends.
327     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
328 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
329     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
330     # the same token anything from 'gcc -dumpspecs' is overridden by
331     # the contents of $(gcc_install_dir)/specs so the result is the
332     # same either way.
333     _gcc-specs-directive_raw() {
334 kevquinn 1.57 local cc=$(tc-getCC)
335     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
336     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
337 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
338     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
339 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
340 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
341     { spec=spec $0 }
342     END { print spec }'
343     return 0
344 kevquinn 1.41 }
345    
346 kevquinn 1.68 # Return the requested gcc specs directive, with all included
347     # specs expanded.
348     # Note, it does not check for inclusion loops, which cause it
349     # to never finish - but such loops are invalid for gcc and we're
350     # assuming gcc is operational.
351     gcc-specs-directive() {
352     local directive subdname subdirective
353     directive="$(_gcc-specs-directive_raw $1)"
354     while [[ ${directive} == *%\(*\)* ]]; do
355     subdname=${directive/*%\(}
356     subdname=${subdname/\)*}
357     subdirective="$(_gcc-specs-directive_raw ${subdname})"
358     directive="${directive//\%(${subdname})/${subdirective}}"
359     done
360     echo "${directive}"
361     return 0
362     }
363    
364 kevquinn 1.41 # Returns true if gcc sets relro
365     gcc-specs-relro() {
366     local directive
367     directive=$(gcc-specs-directive link_command)
368 gengor 1.84 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
369 kevquinn 1.41 }
370     # Returns true if gcc sets now
371     gcc-specs-now() {
372     local directive
373     directive=$(gcc-specs-directive link_command)
374 gengor 1.84 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
375 kevquinn 1.41 }
376     # Returns true if gcc builds PIEs
377     gcc-specs-pie() {
378     local directive
379     directive=$(gcc-specs-directive cc1)
380 gengor 1.84 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
381 kevquinn 1.41 }
382     # Returns true if gcc builds with the stack protector
383     gcc-specs-ssp() {
384     local directive
385     directive=$(gcc-specs-directive cc1)
386 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
387 kevquinn 1.41 }
388 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
389     gcc-specs-ssp-to-all() {
390     local directive
391     directive=$(gcc-specs-directive cc1)
392 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
393 kevquinn 1.46 }
394 gengor 1.80 # Returns true if gcc builds with fno-strict-overflow
395     gcc-specs-nostrict() {
396     local directive
397     directive=$(gcc-specs-directive cc1)
398 gengor 1.84 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
399 gengor 1.80 }
400 vapier 1.60
401    
402 vapier 1.74 # @FUNCTION: gen_usr_ldscript
403 vapier 1.85 # @USAGE: [-a] <list of libs to create linker scripts for>
404 vapier 1.74 # @DESCRIPTION:
405 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
406     # libs in /lib. This is to fix linking problems when you have
407     # the .so in /lib, and the .a in /usr/lib. What happens is that
408     # in some cases when linking dynamic, the .a in /usr/lib is used
409     # instead of the .so in /lib due to gcc/libtool tweaking ld's
410 vapier 1.74 # library search path. This causes many builds to fail.
411 vapier 1.60 # See bug #4411 for more info.
412     #
413     # Note that you should in general use the unversioned name of
414 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
415     # correctly to point to the latest version of the library present.
416 vapier 1.70 gen_usr_ldscript() {
417 vapier 1.85 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
418 grobian 1.91 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
419    
420     tc-is-static-only && return
421    
422 vapier 1.60 # Just make sure it exists
423     dodir /usr/${libdir}
424    
425 vapier 1.85 if [[ $1 == "-a" ]] ; then
426     auto=true
427     shift
428     dodir /${libdir}
429     fi
430    
431 vapier 1.60 # OUTPUT_FORMAT gives hints to the linker as to what binary format
432     # is referenced ... makes multilib saner
433     output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
434     [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
435    
436     for lib in "$@" ; do
437 grobian 1.91 local tlib
438     if ${auto} ; then
439     lib="lib${lib}${suffix}"
440 grobian 1.90 else
441 grobian 1.91 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
442     # This especially is for AIX where $(get_libname) can return ".a",
443     # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
444     [[ -r ${ED}/${libdir}/${lib} ]] || continue
445     #TODO: better die here?
446     fi
447    
448     case ${CTARGET:-${CHOST}} in
449     *-darwin*)
450 vapier 1.85 if ${auto} ; then
451 grobian 1.91 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
452     else
453     tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
454     fi
455     [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
456     tlib=${tlib##*/}
457    
458     if ${auto} ; then
459     mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
460 grobian 1.92 # some install_names are funky: they encode a version
461     if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
462     mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
463     fi
464 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
465     fi
466    
467     # Mach-O files have an id, which is like a soname, it tells how
468     # another object linking against this lib should reference it.
469     # Since we moved the lib from usr/lib into lib this reference is
470     # wrong. Hence, we update it here. We don't configure with
471     # libdir=/lib because that messes up libtool files.
472     # Make sure we don't lose the specific version, so just modify the
473     # existing install_name
474     install_name_tool \
475     -id "${EPREFIX}"/${libdir}/${tlib} \
476     "${ED}"/${libdir}/${tlib}
477     # Now as we don't use GNU binutils and our linker doesn't
478     # understand linker scripts, just create a symlink.
479     pushd "${ED}/usr/${libdir}" > /dev/null
480     ln -snf "../../${libdir}/${tlib}" "${lib}"
481     popd > /dev/null
482     ;;
483 grobian 1.93 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
484 grobian 1.91 if ${auto} ; then
485     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
486     # no way to retrieve soname on these platforms (?)
487     tlib=$(readlink "${ED}"/${libdir}/${lib})
488     tlib=${tlib##*/}
489     if [[ -z ${tlib} ]] ; then
490     # ok, apparently was not a symlink, don't remove it and
491     # just link to it
492     tlib=${lib}
493     else
494     rm -f "${ED}"/${libdir}/${lib}
495     fi
496     else
497     tlib=${lib}
498     fi
499    
500     # we don't have GNU binutils on these platforms, so we symlink
501     # instead, which seems to work fine. Keep it relative, otherwise
502     # we break some QA checks in Portage
503     # on interix, the linker scripts would work fine in _most_
504     # situations. if a library links to such a linker script the
505     # absolute path to the correct library is inserted into the binary,
506     # which is wrong, since anybody linking _without_ libtool will miss
507     # some dependencies, since the stupid linker cannot find libraries
508     # hardcoded with absolute paths (as opposed to the loader, which
509     # seems to be able to do this).
510     # this has been seen while building shared-mime-info which needs
511     # libxml2, but links without libtool (and does not add libz to the
512     # command line by itself).
513     pushd "${ED}/usr/${libdir}" > /dev/null
514     ln -snf "../../${libdir}/${tlib}" "${lib}"
515     popd > /dev/null
516     ;;
517 grobian 1.93 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
518     if ${auto} ; then
519     tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
520     [[ -z ${tlib} ]] && tlib=${lib}
521     tlib=${tlib##*/} # 'internal name' can have a path component
522     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
523     # some SONAMEs are funky: they encode a version before the .so
524     if [[ ${tlib} != ${lib}* ]] ; then
525     mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
526     fi
527     [[ ${tlib} != ${lib} ]] &&
528     rm -f "${ED}"/${libdir}/${lib}
529     else
530     tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
531     [[ -z ${tlib} ]] && tlib=${lib}
532     tlib=${tlib##*/} # 'internal name' can have a path component
533     fi
534     pushd "${ED}"/usr/${libdir} >/dev/null
535     ln -snf "../../${libdir}/${tlib}" "${lib}"
536     # need the internal name in usr/lib too, to be available at runtime
537     # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
538     [[ ${tlib} != ${lib} ]] &&
539     ln -snf "../../${libdir}/${tlib}" "${tlib}"
540     popd >/dev/null
541     ;;
542 grobian 1.91 *)
543     if ${auto} ; then
544     tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
545     [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
546     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
547 vapier 1.88 # some SONAMEs are funky: they encode a version before the .so
548     if [[ ${tlib} != ${lib}* ]] ; then
549 grobian 1.91 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
550 vapier 1.88 fi
551 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
552 vapier 1.85 else
553     tlib=${lib}
554     fi
555 grobian 1.91 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
556 grobian 1.61 /* GNU ld script
557 vapier 1.87 Since Gentoo has critical dynamic libraries in /lib, and the static versions
558     in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
559     run into linking problems. This "fake" dynamic lib is a linker script that
560     redirects the linker to the real lib. And yes, this works in the cross-
561     compiling scenario as the sysroot-ed linker will prepend the real path.
562 grobian 1.61
563     See bug http://bugs.gentoo.org/4411 for more info.
564     */
565     ${output_format}
566 grobian 1.91 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
567 grobian 1.61 END_LDSCRIPT
568 grobian 1.91 ;;
569     esac
570     fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
571 vapier 1.60 done
572     }

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