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Revision 1.65 - (show annotations) (download)
Sun Jun 1 01:37:29 2008 UTC (6 years, 2 months ago) by vapier
Branch: MAIN
Changes since 1.64: +108 -35 lines
add eclass documentation by mren #210521

1 # Copyright 1999-2008 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/multilib.eclass,v 1.64 2008/05/02 04:07:38 vapier Exp $
4
5 # @ECLASS: multilib.eclass
6 # @MAINTAINER:
7 # amd64@gentoo.org
8 # toolchain@gentoo.org
9 # @BLURB: This eclass is for all functions pertaining to handling multilib configurations.
10 # @DESCRIPTION:
11 # This eclass is for all functions pertaining to handling multilib configurations.
12
13 ___ECLASS_RECUR_MULTILIB="yes"
14 [[ -z ${___ECLASS_RECUR_TOOLCHAIN_FUNCS} ]] && inherit toolchain-funcs
15
16 # is_final_abi:
17 # Return true if ${ABI} is the final abi to be installed (and thus we are
18 # on our last run through a src_* function.
19
20 # number_abis:
21 # echo the number of ABIs we will be installing for
22
23 # get_install_abis:
24 # Return a list of the ABIs we want to install for with
25 # the last one in the list being the default.
26
27 # get_all_abis:
28 # Return a list of the ABIs supported by this profile.
29 # the last one in the list being the default.
30
31 # get_all_libdirs:
32 # Returns a list of all the libdirs used by this profile. This includes
33 # those that might not be touched by the current ebuild and always includes
34 # "lib".
35
36 # get_libdir:
37 # Returns the libdir for the selected ABI. This is backwards compatible
38 # and simply calls get_abi_LIBDIR() on newer profiles. You should use this
39 # to determine where to install shared objects (ex: /usr/$(get_libdir))
40
41 # get_abi_var <VAR> [<ABI>]:
42 # returns the value of ${<VAR>_<ABI>} which should be set in make.defaults
43 #
44 # get_abi_CFLAGS:
45 # get_abi_CDEFINE:
46 # get_abi_LIBDIR:
47 # Aliases for 'get_abi_var CFLAGS', etc.
48
49 # get_ml_incdir [<include dir> [<ABI>]]
50 # include dir defaults to /usr/include
51 # ABI defaults to ${ABI} or ${DEFAULT_ABI}
52 #
53 # If a multilib include dir is associated with the passed include dir, then
54 # we return it, otherwise, we just echo back the include dir. This is
55 # neccessary when a built script greps header files rather than testing them
56 # via #include (like perl) to figure out features.
57
58 # prep_ml_includes:
59 # Some includes (include/asm, glibc, etc) are ABI dependent. In this case,
60 # We can install them in different locations for each ABI and create a common
61 # header which includes the right one based on CDEFINE_${ABI}. If your
62 # package installs ABI-specific headers, just add 'prep_ml_includes' to the
63 # end of your src_install(). It takes a list of directories that include
64 # files are installed in (default is /usr/include if none are passed).
65 #
66 # Example:
67 # src_install() {
68 # ...
69 # prep_ml_includes /usr/qt/3/include
70 # }
71
72 # create_ml_includes <include dir> <symbol 1>:<dir 1> [<symbol 2>:<dir 2> ...]
73 # If you need more control than prep_ml_includes can offer (like linux-headers
74 # for the asm-* dirs, then use create_ml_includes. The firs argument is the
75 # common dir. The remaining args are of the form <symbol>:<dir> where
76 # <symbol> is what is put in the #ifdef for choosing that dir.
77 #
78 # Ideas for this code came from debian's sparc-linux headers package.
79 #
80 # Example:
81 # create_ml_includes /usr/include/asm __sparc__:/usr/include/asm-sparc __sparc64__:/usr/include/asm-sparc64
82 # create_ml_includes /usr/include/asm __i386__:/usr/include/asm-i386 __x86_64__:/usr/include/asm-x86_64
83
84 # get_libname [version]
85 # returns libname with proper suffix {.so,.dylib} and optionally supplied version
86 # for ELF/MACH-O shared objects
87 #
88 # Example:
89 # get_libname libfoo ${PV}
90 # Returns: libfoo.so.${PV} (ELF) || libfoo.${PV}.dylib (MACH)
91
92 ### END DOCUMENTATION ###
93
94 # Defaults:
95 export MULTILIB_ABIS=${MULTILIB_ABIS:-"default"}
96 export DEFAULT_ABI=${DEFAULT_ABI:-"default"}
97 export CFLAGS_default
98 export LDFLAGS_default
99 export CHOST_default=${CHOST_default:-${CHOST}}
100 export CTARGET_default=${CTARGET_default:-${CTARGET:-${CHOST_default}}}
101 export LIBDIR_default=${CONF_LIBDIR:-"lib"}
102 export CDEFINE_default="__unix__"
103 export KERNEL_ABI=${KERNEL_ABI:-${DEFAULT_ABI}}
104
105 # @FUNCTION: has_multilib_profile
106 # @DESCRIPTION:
107 # Return true if the current profile is a multilib profile and lists more than
108 # one abi in ${MULTILIB_ABIS}. When has_multilib_profile returns true, that
109 # profile should enable the 'multilib' use flag. This is so you can DEPEND on
110 # a package only for multilib or not multilib.
111 has_multilib_profile() {
112 [ -n "${MULTILIB_ABIS}" -a "${MULTILIB_ABIS}" != "${MULTILIB_ABIS/ /}" ]
113 }
114
115 # @FUNCTION: get_libdir
116 # @RETURN: the libdir for the selected ABI
117 # @DESCRIPTION:
118 # This function simply returns the desired lib directory. With portage
119 # 2.0.51, we now have support for installing libraries to lib32/lib64
120 # to accomidate the needs of multilib systems. It's no longer a good idea
121 # to assume all libraries will end up in lib. Replace any (sane) instances
122 # where lib is named directly with $(get_libdir) if possible.
123 #
124 # Jeremy Huddleston <eradicator@gentoo.org> (23 Dec 2004):
125 # Added support for ${ABI} and ${DEFAULT_ABI}. If they're both not set,
126 # fall back on old behavior. Any profile that has these set should also
127 # depend on a newer version of portage (not yet released) which uses these
128 # over CONF_LIBDIR in econf, dolib, etc...
129 get_libdir() {
130 local CONF_LIBDIR
131 if [ -n "${CONF_LIBDIR_OVERRIDE}" ] ; then
132 # if there is an override, we want to use that... always.
133 echo ${CONF_LIBDIR_OVERRIDE}
134 else
135 get_abi_LIBDIR
136 fi
137 }
138
139 # @FUNCTION: get_multilibdir
140 # @RETURN: Returns the multilibdir
141 get_multilibdir() {
142 if has_multilib_profile; then
143 eerror "get_multilibdir called, but it shouldn't be needed with the new multilib approach. Please file a bug at http://bugs.gentoo.org and assign it to eradicator@gentoo.org"
144 exit 1
145 fi
146 echo ${CONF_MULTILIBDIR:=lib32}
147 }
148
149 # @FUNCTION: get_libdir_override
150 # @DESCRIPTION:
151 # Sometimes you need to override the value returned by get_libdir. A good
152 # example of this is xorg-x11, where lib32 isnt a supported configuration,
153 # and where lib64 -must- be used on amd64 (for applications that need lib
154 # to be 32bit, such as adobe acrobat). Note that this override also bypasses
155 # portage version sanity checking.
156 # get_libdir_override expects one argument, the result get_libdir should
157 # return:
158 #
159 # get_libdir_override lib64
160 get_libdir_override() {
161 if has_multilib_profile; then
162 eerror "get_libdir_override called, but it shouldn't be needed with the new multilib approach. Please file a bug at http://bugs.gentoo.org and assign it to eradicator@gentoo.org"
163 exit 1
164 fi
165 CONF_LIBDIR="$1"
166 CONF_LIBDIR_OVERRIDE="$1"
167 LIBDIR_default="$1"
168 }
169
170 # @FUNCTION: get_abi_var
171 # @USAGE: <VAR> [ABI]
172 # @RETURN: returns the value of ${<VAR>_<ABI>} which should be set in make.defaults
173 # @DESCRIPTION:
174 # ex:
175 # CFLAGS=$(get_abi_var CFLAGS sparc32) # CFLAGS=-m32
176 #
177 # Note that the prefered method is to set CC="$(tc-getCC) $(get_abi_CFLAGS)"
178 # This will hopefully be added to portage soon...
179 #
180 # If <ABI> is not specified, ${ABI} is used.
181 # If <ABI> is not specified and ${ABI} is not defined, ${DEFAULT_ABI} is used.
182 # If <ABI> is not specified and ${ABI} and ${DEFAULT_ABI} are not defined, we return an empty string.
183 get_abi_var() {
184 local flag=$1
185 local abi
186 if [ $# -gt 1 ]; then
187 abi=${2}
188 elif [ -n "${ABI}" ]; then
189 abi=${ABI}
190 elif [ -n "${DEFAULT_ABI}" ]; then
191 abi=${DEFAULT_ABI}
192 else
193 abi="default"
194 fi
195
196 local var="${flag}_${abi}"
197 echo ${!var}
198 }
199
200 # @FUNCTION: get_abi_CFLAGS
201 # @USAGE: [ABI]
202 # @DESCRIPTION:
203 # Alias for 'get_abi_var CFLAGS'
204 get_abi_CFLAGS() { get_abi_var CFLAGS "$@"; }
205
206 # @FUNCTION: get_abi_ASFLAGS
207 # @USAGE: [ABI]
208 # @DESCRIPTION:
209 # Alias for 'get_abi_var ASFLAGS'
210 get_abi_ASFLAGS() { get_abi_var ASFLAGS "$@"; }
211
212 # @FUNCTION: get_abi_LDFLAGS
213 # @USAGE: [ABI]
214 # @DESCRIPTION:
215 # Alias for 'get_abi_var LDFLAGS'
216 get_abi_LDFLAGS() { get_abi_var LDFLAGS "$@"; }
217
218 # @FUNCTION: get_abi_CHOST
219 # @USAGE: [ABI]
220 # @DESCRIPTION:
221 # Alias for 'get_abi_var CHOST'
222 get_abi_CHOST() { get_abi_var CHOST "$@"; }
223
224 # @FUNCTION: get_abi_CTARGET
225 # @USAGE: [ABI]
226 # @DESCRIPTION:
227 # Alias for 'get_abi_var CTARGET'
228 get_abi_CTARGET() { get_abi_var CTARGET "$@"; }
229
230 # @FUNCTION: get_abi_FAKE_TARGETS
231 # @USAGE: [ABI]
232 # @DESCRIPTION:
233 # Alias for 'get_abi_var FAKE_TARGETS'
234 get_abi_FAKE_TARGETS() { get_abi_var FAKE_TARGETS "$@"; }
235
236 # @FUNCTION: get_abi_CDEFINE
237 # @USAGE: [ABI]
238 # @DESCRIPTION:
239 # Alias for 'get_abi_var CDEFINE'
240 get_abi_CDEFINE() { get_abi_var CDEFINE "$@"; }
241
242 # @FUNCTION: get_abi_LIBDIR
243 # @USAGE: [ABI]
244 # @DESCRIPTION:
245 # Alias for 'get_abi_var LIBDIR'
246 get_abi_LIBDIR() { get_abi_var LIBDIR "$@"; }
247
248 # @FUNCTION: get_install_abis
249 # @DESCRIPTION:
250 # Return a list of the ABIs we want to install for with
251 # the last one in the list being the default.
252 get_install_abis() {
253 local order=""
254
255 if [[ -z ${MULTILIB_ABIS} ]] ; then
256 echo "default"
257 return 0
258 fi
259
260 if [[ ${EMULTILIB_PKG} == "true" ]] ; then
261 for x in ${MULTILIB_ABIS} ; do
262 if [[ ${x} != "${DEFAULT_ABI}" ]] ; then
263 hasq ${x} ${ABI_DENY} || ordera="${ordera} ${x}"
264 fi
265 done
266 hasq ${DEFAULT_ABI} ${ABI_DENY} || order="${ordera} ${DEFAULT_ABI}"
267
268 if [[ -n ${ABI_ALLOW} ]] ; then
269 local ordera=""
270 for x in ${order} ; do
271 if hasq ${x} ${ABI_ALLOW} ; then
272 ordera="${ordera} ${x}"
273 fi
274 done
275 order=${ordera}
276 fi
277 else
278 order=${DEFAULT_ABI}
279 fi
280
281 if [[ -z ${order} ]] ; then
282 die "The ABI list is empty. Are you using a proper multilib profile? Perhaps your USE flags or MULTILIB_ABIS are too restrictive for this package."
283 fi
284
285 echo ${order}
286 return 0
287 }
288
289 # @FUNCTION: get_all_abis
290 # @DESCRIPTION:
291 # Return a list of the ABIs supported by this profile.
292 # the last one in the list being the default.
293 get_all_abis() {
294 local order=""
295
296 if [[ -z ${MULTILIB_ABIS} ]] ; then
297 echo "default"
298 return 0
299 fi
300
301 for x in ${MULTILIB_ABIS}; do
302 if [[ ${x} != ${DEFAULT_ABI} ]] ; then
303 order="${order:+${order} }${x}"
304 fi
305 done
306 order="${order:+${order} }${DEFAULT_ABI}"
307
308 echo ${order}
309 return 0
310 }
311
312 # @FUNCTION: get_all_libdirs
313 # @DESCRIPTION:
314 # Returns a list of all the libdirs used by this profile. This includes
315 # those that might not be touched by the current ebuild and always includes
316 # "lib".
317 get_all_libdirs() {
318 local libdirs="lib"
319 local abi
320 local dir
321
322 for abi in ${MULTILIB_ABIS}; do
323 [ "$(get_abi_LIBDIR ${abi})" != "lib" ] && libdirs="${libdirs} $(get_abi_LIBDIR ${abi})"
324 done
325
326 echo "${libdirs}"
327 }
328
329 # @FUNCTION: is_final_abi
330 # @DESCRIPTION:
331 # Return true if ${ABI} is the last ABI on our list (or if we're not
332 # using the new multilib configuration. This can be used to determine
333 # if we're in the last (or only) run through src_{unpack,compile,install}
334 is_final_abi() {
335 has_multilib_profile || return 0
336 local ALL_ABIS=$(get_install_abis)
337 local LAST_ABI=${ALL_ABIS/* /}
338 [[ ${LAST_ABI} == ${ABI} ]]
339 }
340
341 # @FUNCTION: number_abis
342 # @DESCRIPTION:
343 # echo the number of ABIs we will be installing for
344 number_abis() {
345 get_install_abis | wc -w
346 }
347
348 # @FUNCTION: get_ml_incdir
349 # @USAGE: [include_dir] [ABI]
350 # @DESCRIPTION:
351 # include dir defaults to /usr/include
352 # ABI defaults to ${ABI} or ${DEFAULT_ABI}
353 #
354 # If a multilib include dir is associated with the passed include dir, then
355 # we return it, otherwise, we just echo back the include dir. This is
356 # neccessary when a built script greps header files rather than testing them
357 # via #include (like perl) to figure out features.
358 get_ml_incdir() {
359 local dir=/usr/include
360
361 if [[ $# -gt 0 ]]; then
362 incdir=$1
363 shift
364 fi
365
366 if [[ -z "${MULTILIB_ABIS}" ]]; then
367 echo ${incdir}
368 return 0
369 fi
370
371 local abi=${ABI-${DEFAULT_ABI}}
372 if [[ $# -gt 0 ]]; then
373 abi=$1
374 shift
375 fi
376
377 if [[ -d "${dir}/gentoo-multilib/${abi}" ]]; then
378 echo ${dir}/gentoo-multilib/${abi}
379 else
380 echo ${dir}
381 fi
382 }
383
384 # @FUNCTION: prep_ml_includes
385 # @DESCRIPTION:
386 # Some includes (include/asm, glibc, etc) are ABI dependent. In this case,
387 # We can install them in different locations for each ABI and create a common
388 # header which includes the right one based on CDEFINE_${ABI}. If your
389 # package installs ABI-specific headers, just add 'prep_ml_includes' to the
390 # end of your src_install(). It takes a list of directories that include
391 # files are installed in (default is /usr/include if none are passed).
392 #
393 # Example:
394 # src_install() {
395 # ...
396 # prep_ml_includes /usr/qt/3/include
397 # }
398 prep_ml_includes() {
399 if [[ $(number_abis) -gt 1 ]] ; then
400 local dir
401 local dirs
402 local base
403
404 if [[ $# -eq 0 ]] ; then
405 dirs=/usr/include
406 else
407 dirs="$@"
408 fi
409
410 for dir in ${dirs} ; do
411 base=${T}/gentoo-multilib/${dir}/gentoo-multilib
412 mkdir -p "${base}"
413 [[ -d ${base}/${ABI} ]] && rm -rf "${base}/${ABI}"
414 mv "${D}/${dir}" "${base}/${ABI}"
415 done
416
417 if is_final_abi; then
418 base=${T}/gentoo-multilib
419 pushd "${base}"
420 find . | tar -c -T - -f - | tar -x --no-same-owner -f - -C ${D}
421 popd
422
423 # This 'set' stuff is required by mips profiles to properly pass
424 # CDEFINE's (which have spaces) to sub-functions
425 set --
426 for dir in ${dirs} ; do
427 set -- "$@" "${dir}"
428 local abi
429 for abi in $(get_install_abis); do
430 set -- "$@" "$(get_abi_CDEFINE ${abi}):${dir}/gentoo-multilib/${abi}"
431 done
432 create_ml_includes "$@"
433 done
434 fi
435 fi
436 }
437
438 # @FUNCTION: create_ml_includes
439 # @USAGE: <include_dir> <symbol_1>:<dir_1> [<symbol_2>:<dir_2>...]
440 # @DESCRIPTION:
441 # If you need more control than prep_ml_includes can offer (like linux-headers
442 # for the asm-* dirs, then use create_ml_includes. The firs argument is the
443 # common dir. The remaining args are of the form <symbol>:<dir> where
444 # <symbol> is what is put in the #ifdef for choosing that dir.
445 #
446 # Ideas for this code came from debian's sparc-linux headers package.
447 #
448 # Example:
449 # create_ml_includes /usr/include/asm __sparc__:/usr/include/asm-sparc __sparc64__:/usr/include/asm-sparc64
450 # create_ml_includes /usr/include/asm __i386__:/usr/include/asm-i386 __x86_64__:/usr/include/asm-x86_64
451 #
452 # Warning: Be careful with the ordering here. The default ABI has to be the
453 # last, because it is always defined (by GCC)
454 create_ml_includes() {
455 local dest=$1
456 shift
457 local basedirs=$(create_ml_includes-listdirs "$@")
458
459 create_ml_includes-makedestdirs ${dest} ${basedirs}
460
461 local file
462 for file in $(create_ml_includes-allfiles ${basedirs}) ; do
463 #local name=$(echo ${file} | tr '[:lower:]' '[:upper:]' | sed 's:[^[:upper:]]:_:g')
464 (
465 echo "/* Autogenerated by create_ml_includes() in multilib.eclass */"
466
467 local dir
468 for dir in ${basedirs}; do
469 if [[ -f ${D}/${dir}/${file} ]] ; then
470 echo ""
471 local sym=$(create_ml_includes-sym_for_dir ${dir} "$@")
472 if [[ ${sym/=} != "${sym}" ]] ; then
473 echo "#if ${sym}"
474 elif [[ ${sym::1} == "!" ]] ; then
475 echo "#ifndef ${sym:1}"
476 else
477 echo "#ifdef ${sym}"
478 fi
479 echo "# include <$(create_ml_includes-absolute ${dir}/${file})>"
480 echo "#endif /* ${sym} */"
481 fi
482 done
483
484 #echo "#endif /* __CREATE_ML_INCLUDES_STUB_${name}__ */"
485 ) > "${D}/${dest}/${file}"
486 done
487 }
488
489 # Helper function for create_ml_includes
490 create_ml_includes-absolute() {
491 local dst="$(create_ml_includes-tidy_path $1)"
492
493 dst=(${dst//\// })
494
495 local i
496 for ((i=0; i<${#dst[*]}; i++)); do
497 [ "${dst[i]}" == "include" ] && break
498 done
499
500 local strip_upto=$i
501
502 for ((i=strip_upto+1; i<${#dst[*]}-1; i++)); do
503 echo -n ${dst[i]}/
504 done
505
506 echo -n ${dst[i]}
507 }
508
509 # Helper function for create_ml_includes
510 create_ml_includes-tidy_path() {
511 local removed=$1
512
513 if [ -n "${removed}" ]; then
514 # Remove multiple slashes
515 while [ "${removed}" != "${removed/\/\//\/}" ]; do
516 removed=${removed/\/\//\/}
517 done
518
519 # Remove . directories
520 while [ "${removed}" != "${removed//\/.\//\/}" ]; do
521 removed=${removed//\/.\//\/}
522 done
523 [ "${removed##*/}" = "." ] && removed=${removed%/*}
524
525 # Removed .. directories
526 while [ "${removed}" != "${removed//\/..\/}" ]; do
527 local p1="${removed%%\/..\/*}"
528 local p2="${removed#*\/..\/}"
529
530 removed="${p1%\/*}/${p2}"
531 done
532
533 # Remove trailing ..
534 [ "${removed##*/}" = ".." ] && removed=${removed%/*/*}
535
536 # Remove trailing /
537 [ "${removed##*/}" = "" ] && removed=${removed%/*}
538
539 echo ${removed}
540 fi
541 }
542
543 # Helper function for create_ml_includes
544 create_ml_includes-listdirs() {
545 local dirs
546 local data
547 for data in "$@"; do
548 dirs="${dirs} ${data/*:/}"
549 done
550 echo ${dirs:1}
551 }
552
553 # Helper function for create_ml_includes
554 create_ml_includes-makedestdirs() {
555 local dest=$1
556 shift
557 local basedirs=$@
558
559 dodir ${dest}
560
561 local basedir
562 for basedir in ${basedirs}; do
563 local dir
564 for dir in $(find ${D}/${basedir} -type d); do
565 dodir ${dest}/${dir/${D}\/${basedir}/}
566 done
567 done
568 }
569
570 # Helper function for create_ml_includes
571 create_ml_includes-allfiles() {
572 local basedir file
573 for basedir in "$@" ; do
574 for file in $(find "${D}"/${basedir} -type f); do
575 echo ${file/${D}\/${basedir}\//}
576 done
577 done | sort | uniq
578 }
579
580 # Helper function for create_ml_includes
581 create_ml_includes-sym_for_dir() {
582 local dir=$1
583 shift
584 local data
585 for data in "$@"; do
586 if [[ ${data} == *:${dir} ]] ; then
587 echo ${data/:*/}
588 return 0
589 fi
590 done
591 echo "Shouldn't be here -- create_ml_includes-sym_for_dir $1 $@"
592 # exit because we'll likely be called from a subshell
593 exit 1
594 }
595
596 # @FUNCTION: get_libname
597 # @USAGE: [version]
598 # @DESCRIPTION:
599 # Returns libname with proper suffix {.so,.dylib} and optionally supplied version
600 # for ELF/MACH-O shared objects
601 #
602 # Example:
603 # get_libname libfoo ${PV}
604 # Returns: libfoo.so.${PV} (ELF) || libfoo.${PV}.dylib (MACH)
605 get_libname() {
606 local libname
607 local ver=$1
608 case ${CHOST} in
609 mingw*|*-mingw*) libname="dll";;
610 *-darwin*) libname="dylib";;
611 *) libname="so";;
612 esac
613
614 if [[ -z $* ]] ; then
615 echo ".${libname}"
616 else
617 for ver in "$@" ; do
618 case ${CHOST} in
619 *-darwin*) echo ".${ver}.${libname}";;
620 *) echo ".${libname}.${ver}";;
621 esac
622 done
623 fi
624 }
625
626 # This is for the toolchain to setup profile variables when pulling in
627 # a crosscompiler (and thus they aren't set in the profile)
628 multilib_env() {
629 local CTARGET=${1:-${CTARGET}}
630
631 case ${CTARGET} in
632 x86_64*)
633 export CFLAGS_x86=${CFLAGS_x86--m32}
634 export CHOST_x86=${CTARGET/x86_64/i686}
635 export CTARGET_x86=${CHOST_x86}
636 export CDEFINE_x86="__i386__"
637 export LIBDIR_x86="lib"
638
639 export CFLAGS_amd64=${CFLAGS_amd64--m64}
640 export CHOST_amd64=${CTARGET}
641 export CTARGET_amd64=${CHOST_amd64}
642 export CDEFINE_amd64="__x86_64__"
643 export LIBDIR_amd64="lib64"
644
645 export MULTILIB_ABIS="amd64 x86"
646 export DEFAULT_ABI="amd64"
647 ;;
648 mips64*)
649 export CFLAGS_o32=${CFLAGS_o32--mabi=32}
650 export CHOST_o32=${CTARGET/mips64/mips}
651 export CTARGET_o32=${CHOST_o32}
652 export CDEFINE_o32="_MIPS_SIM == _ABIO32"
653 export LIBDIR_o32="lib"
654
655 export CFLAGS_n32=${CFLAGS_n32--mabi=n32}
656 export CHOST_n32=${CTARGET}
657 export CTARGET_n32=${CHOST_n32}
658 export CDEFINE_n32="_MIPS_SIM == _ABIN32"
659 export LIBDIR_n32="lib32"
660
661 export CFLAGS_n64=${CFLAGS_n64--mabi=64}
662 export CHOST_n64=${CTARGET}
663 export CTARGET_n64=${CHOST_n64}
664 export CDEFINE_n64="_MIPS_SIM == _ABI64"
665 export LIBDIR_n64="lib64"
666
667 export MULTILIB_ABIS="n64 n32 o32"
668 export DEFAULT_ABI="n32"
669 ;;
670 powerpc64*)
671 export CFLAGS_ppc=${CFLAGS_ppc--m32}
672 export CHOST_ppc=${CTARGET/powerpc64/powerpc}
673 export CTARGET_ppc=${CHOST_ppc}
674 export CDEFINE_ppc="!__powerpc64__"
675 export LIBDIR_ppc="lib"
676
677 export CFLAGS_ppc64=${CFLAGS_ppc64--m64}
678 export CHOST_ppc64=${CTARGET}
679 export CTARGET_ppc64=${CHOST_ppc64}
680 export CDEFINE_ppc64="__powerpc64__"
681 export LIBDIR_ppc64="lib64"
682
683 export MULTILIB_ABIS="ppc64 ppc"
684 export DEFAULT_ABI="ppc64"
685 ;;
686 s390x*)
687 export CFLAGS_s390=${CFLAGS_s390--m31} # the 31 is not a typo
688 export CHOST_s390=${CTARGET/s390x/s390}
689 export CTARGET_s390=${CHOST_s390}
690 export CDEFINE_s390="!__s390x__"
691 export LIBDIR_s390="lib"
692
693 export CFLAGS_s390x=${CFLAGS_s390x--m64}
694 export CHOST_s390x=${CTARGET}
695 export CTARGET_s390x=${CHOST_s390x}
696 export CDEFINE_s390x="__s390x__"
697 export LIBDIR_s390x="lib64"
698
699 export MULTILIB_ABIS="s390x s390"
700 export DEFAULT_ABI="s390x"
701 ;;
702 sparc64*)
703 export CFLAGS_sparc32=${CFLAGS_sparc32--m32}
704 export CHOST_sparc32=${CTARGET/sparc64/sparc}
705 export CTARGET_sparc32=${CHOST_sparc32}
706 export CDEFINE_sparc32="!__arch64__"
707 export LIBDIR_sparc32="lib"
708
709 export CFLAGS_sparc64=${CFLAGS_sparc64--m64}
710 export CHOST_sparc64=${CTARGET}
711 export CTARGET_sparc64=${CHOST_sparc64}
712 export CDEFINE_sparc64="__arch64__"
713 export LIBDIR_sparc64="lib64"
714
715 export MULTILIB_ABIS="sparc64 sparc32"
716 export DEFAULT_ABI="sparc64"
717 ;;
718 *)
719 export MULTILIB_ABIS="default"
720 export DEFAULT_ABI="default"
721 ;;
722 esac
723 }
724
725 # @FUNCTION: multilib_toolchain_setup
726 # @DESCRIPTION:
727 # Hide multilib details here for packages which are forced to be compiled for a
728 # specific ABI when run on another ABI (like x86-specific packages on amd64)
729 multilib_toolchain_setup() {
730 export ABI=$1
731
732 if has_version app-admin/eselect-compiler ; then
733 # Binutils doesn't have wrappers for ld and as (yet). Eventually it
734 # will, and all this can just be handled with CHOST.
735 export LD="ld $(get_abi_LDFLAGS $1)"
736 export AS="as $(get_abi_ASFLAGS $1)"
737
738 export CHOST=$(get_abi_CHOST $1)
739 export CBUILD=$(get_abi_CHOST $1)
740 else
741 tc-export CC
742 fi
743 }

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