/[gentoo-x86]/eclass/toolchain-funcs.eclass
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Revision 1.99 - (hide annotations) (download)
Thu Apr 22 18:28:11 2010 UTC (4 years, 2 months ago) by armin76
Branch: MAIN
Changes since 1.98: +15 -2 lines
Add tc-is-hardfloat function, rename 'no' of tc-is-softfloat to 'target doesn't support softfloat', acked by vapier, bug #315987

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 armin76 1.99 # $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.98 2010/03/15 23:51:14 vapier 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 1.96 # @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 "$@"; }
95 vapier 1.98 # @FUNCTION: tc-getRC
96     # @USAGE: [toolchain prefix]
97     # @RETURN: name of the Windows resource compiler
98     tc-getRC() { tc-getPROG RC windres "$@"; }
99     # @FUNCTION: tc-getDLLWRAP
100     # @USAGE: [toolchain prefix]
101     # @RETURN: name of the Windows dllwrap utility
102     tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
103 vapier 1.1
104 vapier 1.74 # @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 vapier 1.4 tc-getBUILD_CC() {
108 vapier 1.43 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 vapier 1.4
117 vapier 1.9 local search=
118 vapier 1.17 if [[ -n ${CBUILD} ]] ; then
119 vapier 1.21 search=$(type -p ${CBUILD}-gcc)
120 vapier 1.17 search=${search##*/}
121 vapier 1.9 fi
122 vapier 1.45 search=${search:-gcc}
123 vapier 1.11
124 vapier 1.17 export BUILD_CC=${search}
125 vapier 1.11 echo "${search}"
126 vapier 1.4 }
127 vapier 1.1
128 vapier 1.74 # @FUNCTION: tc-export
129     # @USAGE: <list of toolchain variables>
130     # @DESCRIPTION:
131     # Quick way to export a bunch of compiler vars at once.
132 vapier 1.10 tc-export() {
133     local var
134     for var in "$@" ; do
135 vapier 1.79 [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'"
136 vapier 1.36 eval tc-get${var} > /dev/null
137 vapier 1.10 done
138     }
139    
140 vapier 1.74 # @FUNCTION: tc-is-cross-compiler
141     # @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
142 vapier 1.12 tc-is-cross-compiler() {
143 vapier 1.43 return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
144 vapier 1.12 }
145    
146 vapier 1.74 # @FUNCTION: tc-is-softfloat
147     # @DESCRIPTION:
148 vapier 1.65 # See if this toolchain is a softfloat based one.
149 vapier 1.74 # @CODE
150 vapier 1.65 # The possible return values:
151     # - only: the target is always softfloat (never had fpu)
152     # - yes: the target should support softfloat
153 armin76 1.99 # - no: the target doesn't support softfloat
154 vapier 1.74 # @CODE
155 vapier 1.65 # 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 vapier 1.66 bfin*|h8300*)
161 vapier 1.65 echo "only" ;;
162     *)
163     [[ ${CTARGET//_/-} == *-softfloat-* ]] \
164     && echo "yes" \
165     || echo "no"
166     ;;
167     esac
168     }
169 vapier 1.1
170 armin76 1.99 # @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     [[ ${CTARGET//_/-} == *-hardfloat-* ]] \
179     && echo "yes" \
180     || echo "no"
181     }
182    
183 grobian 1.91 # @FUNCTION: tc-is-static-only
184     # @DESCRIPTION:
185     # Return shell true if the target does not support shared libs, shell false
186     # otherwise.
187     tc-is-static-only() {
188     local host=${CTARGET:-${CHOST}}
189    
190     # *MiNT doesn't have shared libraries, only platform so far
191     return $([[ ${host} == *-mint* ]])
192     }
193    
194 vapier 1.97 # @FUNCTION: tc-has-tls
195     # @USAGE: [-s|-c|-l] [toolchain prefix]
196     # @DESCRIPTION:
197     # See if the toolchain supports thread local storage (TLS). Use -s to test the
198     # compiler, -c to also test the assembler, and -l to also test the C library
199     # (the default).
200     tc-has-tls() {
201     local base="${T}/test-tc-tls"
202     cat <<-EOF > "${base}.c"
203     int foo(int *i) {
204     static __thread int j = 0;
205     return *i ? j : *i;
206     }
207     EOF
208     local flags
209     case $1 in
210     -s) flags="-S";;
211     -c) flags="-c";;
212     -l) ;;
213     -*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
214     esac
215     : ${flags:=-fPIC -shared -Wl,-z,defs}
216     [[ $1 == -* ]] && shift
217     $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
218     local ret=$?
219     rm -f "${base}"*
220     return ${ret}
221     }
222    
223 grobian 1.91
224 swegener 1.40 # Parse information from CBUILD/CHOST/CTARGET rather than
225 vapier 1.20 # use external variables from the profile.
226     tc-ninja_magic_to_arch() {
227 vapier 1.21 ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
228 vapier 1.19
229     local type=$1
230     local host=$2
231 eradicator 1.25 [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
232 vapier 1.19
233     case ${host} in
234     alpha*) echo alpha;;
235     arm*) echo arm;;
236 vapier 1.72 avr*) ninj avr32 avr;;
237 vapier 1.53 bfin*) ninj blackfin bfin;;
238 vapier 1.47 cris*) echo cris;;
239 vapier 1.19 hppa*) ninj parisc hppa;;
240 vapier 1.75 i?86*)
241     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
242     # trees have been unified into 'x86'.
243 aballier 1.77 # FreeBSD still uses i386
244     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then
245 vapier 1.75 echo i386
246     else
247     echo x86
248     fi
249     ;;
250 vapier 1.19 ia64*) echo ia64;;
251 vapier 1.23 m68*) echo m68k;;
252 vapier 1.19 mips*) echo mips;;
253 vapier 1.52 nios2*) echo nios2;;
254     nios*) echo nios;;
255 vapier 1.49 powerpc*)
256     # Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
257 josejx 1.54 # have been unified into simply 'powerpc', but until 2.6.16,
258     # ppc32 is still using ARCH="ppc" as default
259     if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then
260 vapier 1.49 echo powerpc
261 josejx 1.54 elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then
262 dostrow 1.55 if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
263 josejx 1.54 echo powerpc
264     else
265     echo ppc
266 swegener 1.56 fi
267 vapier 1.49 elif [[ ${host} == powerpc64* ]] ; then
268     echo ppc64
269 dostrow 1.51 elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then
270     ninj ppc64 ppc
271 vapier 1.49 else
272     echo ppc
273     fi
274 dostrow 1.37 ;;
275 vapier 1.47 s390*) echo s390;;
276     sh64*) ninj sh64 sh;;
277     sh*) echo sh;;
278 vapier 1.19 sparc64*) ninj sparc64 sparc;;
279 vapier 1.28 sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \
280     && ninj sparc64 sparc \
281     || echo sparc
282     ;;
283 vapier 1.47 vax*) echo vax;;
284 vapier 1.75 x86_64*)
285     # Starting with linux-2.6.24, the 'x86_64' and 'i386'
286     # trees have been unified into 'x86'.
287     if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then
288     echo x86
289     else
290     ninj x86_64 amd64
291     fi
292     ;;
293 vapier 1.73
294     # since our usage of tc-arch is largely concerned with
295     # normalizing inputs for testing ${CTARGET}, let's filter
296     # other cross targets (mingw and such) into the unknown.
297     *) echo unknown;;
298 vapier 1.19 esac
299     }
300 vapier 1.74 # @FUNCTION: tc-arch-kernel
301     # @USAGE: [toolchain prefix]
302     # @RETURN: name of the kernel arch according to the compiler target
303 vapier 1.20 tc-arch-kernel() {
304 vapier 1.74 tc-ninja_magic_to_arch kern "$@"
305 vapier 1.19 }
306 vapier 1.74 # @FUNCTION: tc-arch
307     # @USAGE: [toolchain prefix]
308     # @RETURN: name of the portage arch according to the compiler target
309 vapier 1.20 tc-arch() {
310 vapier 1.74 tc-ninja_magic_to_arch portage "$@"
311 vapier 1.19 }
312 vapier 1.74
313 robbat2 1.71 tc-endian() {
314     local host=$1
315     [[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
316     host=${host%%-*}
317    
318     case ${host} in
319     alpha*) echo big;;
320     arm*b*) echo big;;
321     arm*) echo little;;
322     cris*) echo little;;
323     hppa*) echo big;;
324     i?86*) echo little;;
325     ia64*) echo little;;
326     m68*) echo big;;
327     mips*l*) echo little;;
328     mips*) echo big;;
329     powerpc*) echo big;;
330     s390*) echo big;;
331     sh*b*) echo big;;
332     sh*) echo little;;
333     sparc*) echo big;;
334     x86_64*) echo little;;
335     *) echo wtf;;
336     esac
337     }
338 vapier 1.19
339 vapier 1.74 # @FUNCTION: gcc-fullversion
340     # @RETURN: compiler version (major.minor.micro: [3.4.6])
341 vapier 1.1 gcc-fullversion() {
342 vapier 1.63 $(tc-getCC "$@") -dumpversion
343 vapier 1.1 }
344 vapier 1.74 # @FUNCTION: gcc-version
345     # @RETURN: compiler version (major.minor: [3.4].6)
346 vapier 1.1 gcc-version() {
347 vapier 1.63 gcc-fullversion "$@" | cut -f1,2 -d.
348 vapier 1.1 }
349 vapier 1.74 # @FUNCTION: gcc-major-version
350     # @RETURN: major compiler version (major: [3].4.6)
351 vapier 1.1 gcc-major-version() {
352 vapier 1.63 gcc-version "$@" | cut -f1 -d.
353 vapier 1.1 }
354 vapier 1.74 # @FUNCTION: gcc-minor-version
355     # @RETURN: minor compiler version (minor: 3.[4].6)
356 vapier 1.1 gcc-minor-version() {
357 vapier 1.63 gcc-version "$@" | cut -f2 -d.
358 vapier 1.1 }
359 vapier 1.74 # @FUNCTION: gcc-micro-version
360     # @RETURN: micro compiler version (micro: 3.4.[6])
361 vapier 1.1 gcc-micro-version() {
362 vapier 1.63 gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d-
363 vapier 1.1 }
364 vapier 1.74
365 kevquinn 1.68 # Returns the installation directory - internal toolchain
366     # function for use by _gcc-specs-exists (for flag-o-matic).
367     _gcc-install-dir() {
368 vapier 1.76 echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
369 kevquinn 1.68 awk '$1=="install:" {print $2}')"
370     }
371     # Returns true if the indicated specs file exists - internal toolchain
372     # function for use by flag-o-matic.
373     _gcc-specs-exists() {
374     [[ -f $(_gcc-install-dir)/$1 ]]
375     }
376 kevquinn 1.41
377 kevquinn 1.68 # Returns requested gcc specs directive unprocessed - for used by
378     # gcc-specs-directive()
379 kevquinn 1.46 # Note; later specs normally overwrite earlier ones; however if a later
380     # spec starts with '+' then it appends.
381     # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
382 kevquinn 1.68 # as "Reading <file>", in order. Strictly speaking, if there's a
383     # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
384     # the same token anything from 'gcc -dumpspecs' is overridden by
385     # the contents of $(gcc_install_dir)/specs so the result is the
386     # same either way.
387     _gcc-specs-directive_raw() {
388 kevquinn 1.57 local cc=$(tc-getCC)
389     local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
390     ${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
391 kevquinn 1.46 'BEGIN { pspec=""; spec=""; outside=1 }
392     $1=="*"directive":" { pspec=spec; spec=""; outside=0; next }
393 kevquinn 1.41 outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
394 kevquinn 1.46 spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
395     { spec=spec $0 }
396     END { print spec }'
397     return 0
398 kevquinn 1.41 }
399    
400 kevquinn 1.68 # Return the requested gcc specs directive, with all included
401     # specs expanded.
402     # Note, it does not check for inclusion loops, which cause it
403     # to never finish - but such loops are invalid for gcc and we're
404     # assuming gcc is operational.
405     gcc-specs-directive() {
406     local directive subdname subdirective
407     directive="$(_gcc-specs-directive_raw $1)"
408     while [[ ${directive} == *%\(*\)* ]]; do
409     subdname=${directive/*%\(}
410     subdname=${subdname/\)*}
411     subdirective="$(_gcc-specs-directive_raw ${subdname})"
412     directive="${directive//\%(${subdname})/${subdirective}}"
413     done
414     echo "${directive}"
415     return 0
416     }
417    
418 kevquinn 1.41 # Returns true if gcc sets relro
419     gcc-specs-relro() {
420     local directive
421     directive=$(gcc-specs-directive link_command)
422 gengor 1.84 return $([[ "${directive/\{!norelro:}" != "${directive}" ]])
423 kevquinn 1.41 }
424     # Returns true if gcc sets now
425     gcc-specs-now() {
426     local directive
427     directive=$(gcc-specs-directive link_command)
428 gengor 1.84 return $([[ "${directive/\{!nonow:}" != "${directive}" ]])
429 kevquinn 1.41 }
430     # Returns true if gcc builds PIEs
431     gcc-specs-pie() {
432     local directive
433     directive=$(gcc-specs-directive cc1)
434 gengor 1.84 return $([[ "${directive/\{!nopie:}" != "${directive}" ]])
435 kevquinn 1.41 }
436     # Returns true if gcc builds with the stack protector
437     gcc-specs-ssp() {
438     local directive
439     directive=$(gcc-specs-directive cc1)
440 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]])
441 kevquinn 1.41 }
442 kevquinn 1.46 # Returns true if gcc upgrades fstack-protector to fstack-protector-all
443     gcc-specs-ssp-to-all() {
444     local directive
445     directive=$(gcc-specs-directive cc1)
446 gengor 1.84 return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]])
447 kevquinn 1.46 }
448 gengor 1.80 # Returns true if gcc builds with fno-strict-overflow
449     gcc-specs-nostrict() {
450     local directive
451     directive=$(gcc-specs-directive cc1)
452 gengor 1.84 return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]])
453 gengor 1.80 }
454 vapier 1.60
455    
456 vapier 1.74 # @FUNCTION: gen_usr_ldscript
457 vapier 1.85 # @USAGE: [-a] <list of libs to create linker scripts for>
458 vapier 1.74 # @DESCRIPTION:
459 vapier 1.60 # This function generate linker scripts in /usr/lib for dynamic
460     # libs in /lib. This is to fix linking problems when you have
461     # the .so in /lib, and the .a in /usr/lib. What happens is that
462     # in some cases when linking dynamic, the .a in /usr/lib is used
463     # instead of the .so in /lib due to gcc/libtool tweaking ld's
464 vapier 1.74 # library search path. This causes many builds to fail.
465 vapier 1.60 # See bug #4411 for more info.
466     #
467     # Note that you should in general use the unversioned name of
468 vapier 1.74 # the library (libfoo.so), as ldconfig should usually update it
469     # correctly to point to the latest version of the library present.
470 vapier 1.70 gen_usr_ldscript() {
471 vapier 1.85 local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
472 grobian 1.91 [[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
473    
474     tc-is-static-only && return
475    
476 vapier 1.60 # Just make sure it exists
477     dodir /usr/${libdir}
478    
479 vapier 1.85 if [[ $1 == "-a" ]] ; then
480     auto=true
481     shift
482     dodir /${libdir}
483     fi
484    
485 vapier 1.60 # OUTPUT_FORMAT gives hints to the linker as to what binary format
486     # is referenced ... makes multilib saner
487     output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
488     [[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
489    
490     for lib in "$@" ; do
491 grobian 1.91 local tlib
492     if ${auto} ; then
493     lib="lib${lib}${suffix}"
494 grobian 1.90 else
495 grobian 1.91 # Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
496     # This especially is for AIX where $(get_libname) can return ".a",
497     # so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
498     [[ -r ${ED}/${libdir}/${lib} ]] || continue
499     #TODO: better die here?
500     fi
501    
502     case ${CTARGET:-${CHOST}} in
503     *-darwin*)
504 vapier 1.85 if ${auto} ; then
505 grobian 1.91 tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
506     else
507     tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
508     fi
509     [[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
510     tlib=${tlib##*/}
511    
512     if ${auto} ; then
513     mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
514 grobian 1.92 # some install_names are funky: they encode a version
515     if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
516     mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
517     fi
518 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
519     fi
520    
521     # Mach-O files have an id, which is like a soname, it tells how
522     # another object linking against this lib should reference it.
523     # Since we moved the lib from usr/lib into lib this reference is
524     # wrong. Hence, we update it here. We don't configure with
525     # libdir=/lib because that messes up libtool files.
526     # Make sure we don't lose the specific version, so just modify the
527     # existing install_name
528 grobian 1.94 if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
529 grobian 1.95 chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
530 grobian 1.94 local nowrite=yes
531     fi
532 grobian 1.91 install_name_tool \
533     -id "${EPREFIX}"/${libdir}/${tlib} \
534 grobian 1.94 "${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
535 grobian 1.95 [[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
536 grobian 1.91 # Now as we don't use GNU binutils and our linker doesn't
537     # understand linker scripts, just create a symlink.
538     pushd "${ED}/usr/${libdir}" > /dev/null
539     ln -snf "../../${libdir}/${tlib}" "${lib}"
540     popd > /dev/null
541     ;;
542 grobian 1.93 *-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*)
543 grobian 1.91 if ${auto} ; then
544     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
545     # no way to retrieve soname on these platforms (?)
546     tlib=$(readlink "${ED}"/${libdir}/${lib})
547     tlib=${tlib##*/}
548     if [[ -z ${tlib} ]] ; then
549     # ok, apparently was not a symlink, don't remove it and
550     # just link to it
551     tlib=${lib}
552     else
553     rm -f "${ED}"/${libdir}/${lib}
554     fi
555     else
556     tlib=${lib}
557     fi
558    
559     # we don't have GNU binutils on these platforms, so we symlink
560     # instead, which seems to work fine. Keep it relative, otherwise
561     # we break some QA checks in Portage
562     # on interix, the linker scripts would work fine in _most_
563     # situations. if a library links to such a linker script the
564     # absolute path to the correct library is inserted into the binary,
565     # which is wrong, since anybody linking _without_ libtool will miss
566     # some dependencies, since the stupid linker cannot find libraries
567     # hardcoded with absolute paths (as opposed to the loader, which
568     # seems to be able to do this).
569     # this has been seen while building shared-mime-info which needs
570     # libxml2, but links without libtool (and does not add libz to the
571     # command line by itself).
572     pushd "${ED}/usr/${libdir}" > /dev/null
573     ln -snf "../../${libdir}/${tlib}" "${lib}"
574     popd > /dev/null
575     ;;
576 grobian 1.93 hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above.
577     if ${auto} ; then
578     tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
579     [[ -z ${tlib} ]] && tlib=${lib}
580     tlib=${tlib##*/} # 'internal name' can have a path component
581     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
582     # some SONAMEs are funky: they encode a version before the .so
583     if [[ ${tlib} != ${lib}* ]] ; then
584     mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
585     fi
586     [[ ${tlib} != ${lib} ]] &&
587     rm -f "${ED}"/${libdir}/${lib}
588     else
589     tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}')
590     [[ -z ${tlib} ]] && tlib=${lib}
591     tlib=${tlib##*/} # 'internal name' can have a path component
592     fi
593     pushd "${ED}"/usr/${libdir} >/dev/null
594     ln -snf "../../${libdir}/${tlib}" "${lib}"
595     # need the internal name in usr/lib too, to be available at runtime
596     # when linked with /path/to/lib.sl (hardcode_direct_absolute=yes)
597     [[ ${tlib} != ${lib} ]] &&
598     ln -snf "../../${libdir}/${tlib}" "${tlib}"
599     popd >/dev/null
600     ;;
601 grobian 1.91 *)
602     if ${auto} ; then
603     tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
604     [[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
605     mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
606 vapier 1.88 # some SONAMEs are funky: they encode a version before the .so
607     if [[ ${tlib} != ${lib}* ]] ; then
608 grobian 1.91 mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
609 vapier 1.88 fi
610 grobian 1.91 rm -f "${ED}"/${libdir}/${lib}
611 vapier 1.85 else
612     tlib=${lib}
613     fi
614 grobian 1.91 cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
615 grobian 1.61 /* GNU ld script
616 vapier 1.87 Since Gentoo has critical dynamic libraries in /lib, and the static versions
617     in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
618     run into linking problems. This "fake" dynamic lib is a linker script that
619     redirects the linker to the real lib. And yes, this works in the cross-
620     compiling scenario as the sysroot-ed linker will prepend the real path.
621 grobian 1.61
622     See bug http://bugs.gentoo.org/4411 for more info.
623     */
624     ${output_format}
625 grobian 1.91 GROUP ( ${EPREFIX}/${libdir}/${tlib} )
626 grobian 1.61 END_LDSCRIPT
627 grobian 1.91 ;;
628     esac
629     fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
630 vapier 1.60 done
631     }

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