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Revision 1.60 - (show annotations) (download)
Thu Jul 3 07:48:49 2014 UTC (3 years, 11 months ago) by mgorny
Branch: MAIN
Changes since 1.59: +3 -1 lines
Re-enable multilib flags for s390.

1 # Copyright 1999-2014 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/multilib-build.eclass,v 1.59 2014/06/29 08:32:46 mgorny Exp $
4
5 # @ECLASS: multilib-build.eclass
6 # @MAINTAINER:
7 # gx86-multilib team <multilib@gentoo.org>
8 # @AUTHOR:
9 # Author: Michał Górny <mgorny@gentoo.org>
10 # @BLURB: flags and utility functions for building multilib packages
11 # @DESCRIPTION:
12 # The multilib-build.eclass exports USE flags and utility functions
13 # necessary to build packages for multilib in a clean and uniform
14 # manner.
15 #
16 # Please note that dependency specifications for multilib-capable
17 # dependencies shall use the USE dependency string in ${MULTILIB_USEDEP}
18 # to properly request multilib enabled.
19
20 if [[ ! ${_MULTILIB_BUILD} ]]; then
21
22 # EAPI=4 is required for meaningful MULTILIB_USEDEP.
23 case ${EAPI:-0} in
24 4|5) ;;
25 *) die "EAPI=${EAPI} is not supported" ;;
26 esac
27
28 inherit multibuild multilib
29
30 # @ECLASS-VARIABLE: _MULTILIB_FLAGS
31 # @INTERNAL
32 # @DESCRIPTION:
33 # The list of multilib flags and corresponding ABI values. If the same
34 # flag is reused for multiple ABIs (e.g. x86 on Linux&FreeBSD), multiple
35 # ABIs may be separated by commas.
36 #
37 # Please contact multilib before modifying this list. This way we can
38 # ensure that every *preliminary* work is done and the multilib can be
39 # extended safely.
40 _MULTILIB_FLAGS=(
41 abi_x86_32:x86,x86_fbsd
42 abi_x86_64:amd64,amd64_fbsd
43 abi_x86_x32:x32
44 abi_mips_n32:n32
45 abi_mips_n64:n64
46 abi_mips_o32:o32
47 abi_ppc_32:ppc
48 abi_ppc_64:ppc64
49 abi_s390_32:s390
50 abi_s390_64:s390x
51 )
52
53 # @ECLASS-VARIABLE: MULTILIB_COMPAT
54 # @DEFAULT_UNSET
55 # @DESCRIPTION:
56 # List of multilib ABIs supported by the ebuild. If unset, defaults to
57 # all ABIs supported by the eclass.
58 #
59 # This variable is intended for use in prebuilt multilib packages that
60 # can provide binaries only for a limited set of ABIs. If ABIs need to
61 # be limited due to a bug in source code, package.use.mask is
62 # recommended instead.
63 #
64 # Example use:
65 # @CODE
66 # # Upstream provides binaries for x86 & amd64 only
67 # MULTILIB_COMPAT=( abi_x86_{32,64} )
68 # @CODE
69
70 # @ECLASS-VARIABLE: MULTILIB_USEDEP
71 # @DESCRIPTION:
72 # The USE-dependency to be used on dependencies (libraries) needing
73 # to support multilib as well.
74 #
75 # Example use:
76 # @CODE
77 # RDEPEND="dev-libs/libfoo[${MULTILIB_USEDEP}]
78 # net-libs/libbar[ssl,${MULTILIB_USEDEP}]"
79 # @CODE
80
81 # @ECLASS-VARIABLE: MULTILIB_ABI_FLAG
82 # @DEFAULT_UNSET
83 # @DESCRIPTION:
84 # The complete ABI name. Resembles the USE flag name.
85 #
86 # This is set within multilib_foreach_abi(),
87 # multilib_parallel_foreach_abi() and multilib-minimal sub-phase
88 # functions.
89 #
90 # It may be null (empty) when the build is done on ABI not controlled
91 # by a USE flag (e.g. on non-multilib arch or when using multilib
92 # portage). The build will always be done for a single ABI then.
93 #
94 # Example value:
95 # @CODE
96 # abi_x86_64
97 # @CODE
98
99 _multilib_build_set_globals() {
100 local flags=( "${_MULTILIB_FLAGS[@]%:*}" )
101
102 if [[ ${MULTILIB_COMPAT[@]} ]]; then
103 # Validate MULTILIB_COMPAT and filter out the flags.
104 local f
105 for f in "${MULTILIB_COMPAT[@]}"; do
106 if ! has "${f}" "${flags[@]}"; then
107 die "Invalid value in MULTILIB_COMPAT: ${f}"
108 fi
109 done
110
111 flags=( "${MULTILIB_COMPAT[@]}" )
112 fi
113
114 local usedeps=${flags[@]/%/(-)?}
115
116 IUSE=${flags[*]}
117 MULTILIB_USEDEP=${usedeps// /,}
118 }
119 _multilib_build_set_globals
120
121 # @FUNCTION: multilib_get_enabled_abis
122 # @DESCRIPTION:
123 # Return the ordered list of enabled ABIs if multilib builds
124 # are enabled. The best (most preferred) ABI will come last.
125 #
126 # If multilib is disabled, the default ABI will be returned
127 # in order to enforce consistent testing with multilib code.
128 multilib_get_enabled_abis() {
129 debug-print-function ${FUNCNAME} "${@}"
130
131 local pairs=( $(multilib_get_enabled_abi_pairs) )
132 echo "${pairs[@]#*.}"
133 }
134
135 # @FUNCTION: multilib_get_enabled_abi_pairs
136 # @DESCRIPTION:
137 # Return the ordered list of enabled <use-flag>.<ABI> pairs
138 # if multilib builds are enabled. The best (most preferred)
139 # ABI will come last.
140 #
141 # If multilib is disabled, the default ABI will be returned
142 # along with empty <use-flag>.
143 multilib_get_enabled_abi_pairs() {
144 debug-print-function ${FUNCNAME} "${@}"
145
146 local abis=( $(get_all_abis) )
147
148 local abi i found
149 for abi in "${abis[@]}"; do
150 for i in "${_MULTILIB_FLAGS[@]}"; do
151 local m_abis=${i#*:} m_abi
152 local m_flag=${i%:*}
153
154 # split on ,; we can't switch IFS for function scope because
155 # paludis is broken (bug #486592), and switching it locally
156 # for the split is more complex than cheating like this
157 for m_abi in ${m_abis//,/ }; do
158 if [[ ${m_abi} == ${abi} ]] \
159 && { [[ ! "${MULTILIB_COMPAT[@]}" ]] || has "${m_flag}" "${MULTILIB_COMPAT[@]}"; } \
160 && use "${m_flag}"
161 then
162 echo "${m_flag}.${abi}"
163 found=1
164 break 2
165 fi
166 done
167 done
168 done
169
170 if [[ ! ${found} ]]; then
171 # ${ABI} can be used to override the fallback (multilib-portage),
172 # ${DEFAULT_ABI} is the safe fallback.
173 local abi=${ABI:-${DEFAULT_ABI}}
174
175 debug-print "${FUNCNAME}: no ABIs enabled, fallback to ${abi}"
176 debug-print "${FUNCNAME}: ABI=${ABI}, DEFAULT_ABI=${DEFAULT_ABI}"
177 echo ".${abi}"
178 fi
179 }
180
181 # @FUNCTION: _multilib_multibuild_wrapper
182 # @USAGE: <argv>...
183 # @INTERNAL
184 # @DESCRIPTION:
185 # Initialize the environment for ABI selected for multibuild.
186 _multilib_multibuild_wrapper() {
187 debug-print-function ${FUNCNAME} "${@}"
188
189 local ABI=${MULTIBUILD_VARIANT#*.}
190 local MULTILIB_ABI_FLAG=${MULTIBUILD_VARIANT%.*}
191
192 multilib_toolchain_setup "${ABI}"
193 "${@}"
194 }
195
196 # @FUNCTION: multilib_foreach_abi
197 # @USAGE: <argv>...
198 # @DESCRIPTION:
199 # If multilib support is enabled, sets the toolchain up for each
200 # supported ABI along with the ABI variable and correct BUILD_DIR,
201 # and runs the given commands with them.
202 #
203 # If multilib support is disabled, it just runs the commands. No setup
204 # is done.
205 multilib_foreach_abi() {
206 debug-print-function ${FUNCNAME} "${@}"
207
208 local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abi_pairs) )
209 multibuild_foreach_variant _multilib_multibuild_wrapper "${@}"
210 }
211
212 # @FUNCTION: multilib_parallel_foreach_abi
213 # @USAGE: <argv>...
214 # @DESCRIPTION:
215 # If multilib support is enabled, sets the toolchain up for each
216 # supported ABI along with the ABI variable and correct BUILD_DIR,
217 # and runs the given commands with them. The commands are run
218 # in parallel with number of jobs being determined from MAKEOPTS.
219 #
220 # If multilib support is disabled, it just runs the commands. No setup
221 # is done.
222 #
223 # Useful for running configure scripts.
224 multilib_parallel_foreach_abi() {
225 debug-print-function ${FUNCNAME} "${@}"
226
227 local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abi_pairs) )
228 multibuild_parallel_foreach_variant _multilib_multibuild_wrapper "${@}"
229 }
230
231 # @FUNCTION: multilib_for_best_abi
232 # @USAGE: <argv>...
233 # @DESCRIPTION:
234 # Runs the given command with setup for the 'best' (usually native) ABI.
235 multilib_for_best_abi() {
236 debug-print-function ${FUNCNAME} "${@}"
237
238 eqawarn "QA warning: multilib_for_best_abi() function is deprecated and should"
239 eqawarn "not be used. The multilib_is_native_abi() check may be used instead."
240
241 local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abi_pairs) )
242
243 multibuild_for_best_variant _multilib_multibuild_wrapper "${@}"
244 }
245
246 # @FUNCTION: multilib_check_headers
247 # @DESCRIPTION:
248 # Check whether the header files are consistent between ABIs.
249 #
250 # This function needs to be called after each ABI's installation phase.
251 # It obtains the header file checksums and compares them with previous
252 # runs (if any). Dies if header files differ.
253 multilib_check_headers() {
254 _multilib_header_cksum() {
255 [[ -d ${ED}usr/include ]] && \
256 find "${ED}"usr/include -type f \
257 -exec cksum {} + | sort -k2
258 }
259
260 local cksum=$(_multilib_header_cksum)
261 local cksum_file=${T}/.multilib_header_cksum
262
263 if [[ -f ${cksum_file} ]]; then
264 local cksum_prev=$(< "${cksum_file}")
265
266 if [[ ${cksum} != ${cksum_prev} ]]; then
267 echo "${cksum}" > "${cksum_file}.new"
268
269 eerror "Header files have changed between ABIs."
270
271 if type -p diff &>/dev/null; then
272 eerror "$(diff -du "${cksum_file}" "${cksum_file}.new")"
273 else
274 eerror "Old checksums in: ${cksum_file}"
275 eerror "New checksums in: ${cksum_file}.new"
276 fi
277
278 die "Header checksum mismatch, aborting."
279 fi
280 else
281 echo "${cksum}" > "${cksum_file}"
282 fi
283 }
284
285 # @FUNCTION: multilib_copy_sources
286 # @DESCRIPTION:
287 # Create a single copy of the package sources for each enabled ABI.
288 #
289 # The sources are always copied from initial BUILD_DIR (or S if unset)
290 # to ABI-specific build directory matching BUILD_DIR used by
291 # multilib_foreach_abi().
292 multilib_copy_sources() {
293 debug-print-function ${FUNCNAME} "${@}"
294
295 local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abi_pairs) )
296 multibuild_copy_sources
297 }
298
299 # @ECLASS-VARIABLE: MULTILIB_WRAPPED_HEADERS
300 # @DESCRIPTION:
301 # A list of headers to wrap for multilib support. The listed headers
302 # will be moved to a non-standard location and replaced with a file
303 # including them conditionally to current ABI.
304 #
305 # This variable has to be a bash array. Paths shall be relative to
306 # installation root (${ED}), and name regular files. Recursive wrapping
307 # is not supported.
308 #
309 # Please note that header wrapping is *discouraged*. It is preferred to
310 # install all headers in a subdirectory of libdir and use pkg-config to
311 # locate the headers. Some C preprocessors will not work with wrapped
312 # headers.
313 #
314 # Example:
315 # @CODE
316 # MULTILIB_WRAPPED_HEADERS=(
317 # /usr/include/foobar/config.h
318 # )
319 # @CODE
320
321 # @ECLASS-VARIABLE: MULTILIB_CHOST_TOOLS
322 # @DESCRIPTION:
323 # A list of tool executables to preserve for each multilib ABI.
324 # The listed executables will be renamed to ${CHOST}-${basename},
325 # and the native variant will be symlinked to the generic name.
326 #
327 # This variable has to be a bash array. Paths shall be relative to
328 # installation root (${ED}), and name regular files or symbolic
329 # links to regular files. Recursive wrapping is not supported.
330 #
331 # If symbolic link is passed, both symlink path and symlink target
332 # will be changed. As a result, the symlink target is expected
333 # to be wrapped as well (either by listing in MULTILIB_CHOST_TOOLS
334 # or externally).
335 #
336 # Please note that tool wrapping is *discouraged*. It is preferred to
337 # install pkg-config files for each ABI, and require reverse
338 # dependencies to use that.
339 #
340 # Packages that search for tools properly (e.g. using AC_PATH_TOOL
341 # macro) will find the wrapper executables automatically. Other packages
342 # will need explicit override of tool paths.
343 #
344 # Example:
345 # @CODE
346 # MULTILIB_CHOST_TOOLS=(
347 # /usr/bin/foo-config
348 # )
349
350 # @CODE
351 # @FUNCTION: multilib_prepare_wrappers
352 # @USAGE: [<install-root>]
353 # @DESCRIPTION:
354 # Perform the preparation of all kinds of wrappers for the current ABI.
355 # This function shall be called once per each ABI, after installing
356 # the files to be wrapped.
357 #
358 # Takes an optional custom <install-root> from which files will be
359 # used. If no root is specified, uses ${ED}.
360 #
361 # The files to be wrapped are specified using separate variables,
362 # e.g. MULTILIB_WRAPPED_HEADERS. Those variables shall not be changed
363 # between the successive calls to multilib_prepare_wrappers
364 # and multilib_install_wrappers.
365 #
366 # After all wrappers are prepared, multilib_install_wrappers shall
367 # be called to commit them to the installation tree.
368 multilib_prepare_wrappers() {
369 debug-print-function ${FUNCNAME} "${@}"
370
371 [[ ${#} -le 1 ]] || die "${FUNCNAME}: too many arguments"
372
373 local root=${1:-${ED}}
374 local f
375
376 if [[ ${COMPLETE_MULTILIB} == yes ]]; then
377 # symlink '${CHOST}-foo -> foo' to support abi-wrapper while
378 # keeping ${CHOST}-foo calls correct.
379
380 for f in "${MULTILIB_CHOST_TOOLS[@]}"; do
381 # drop leading slash if it's there
382 f=${f#/}
383
384 local dir=${f%/*}
385 local fn=${f##*/}
386
387 ln -s "${fn}" "${root}/${dir}/${CHOST}-${fn}" || die
388 done
389
390 return
391 fi
392
393 for f in "${MULTILIB_CHOST_TOOLS[@]}"; do
394 # drop leading slash if it's there
395 f=${f#/}
396
397 local dir=${f%/*}
398 local fn=${f##*/}
399
400 if [[ -L ${root}/${f} ]]; then
401 # rewrite the symlink target
402 local target=$(readlink "${root}/${f}")
403 local target_dir
404 local target_fn=${target##*/}
405
406 [[ ${target} == */* ]] && target_dir=${target%/*}
407
408 ln -f -s "${target_dir+${target_dir}/}${CHOST}-${target_fn}" \
409 "${root}/${f}" || die
410 fi
411
412 mv "${root}/${f}" "${root}/${dir}/${CHOST}-${fn}" || die
413
414 # symlink the native one back
415 if multilib_is_native_abi; then
416 ln -s "${CHOST}-${fn}" "${root}/${f}" || die
417 fi
418 done
419
420 if [[ ${MULTILIB_WRAPPED_HEADERS[@]} ]]; then
421 # If abi_flag is unset, then header wrapping is unsupported on
422 # this ABI. This means the arch doesn't support multilib at all
423 # -- in this case, the headers are not wrapped and everything
424 # works as expected.
425
426 if [[ ${MULTILIB_ABI_FLAG} ]]; then
427 for f in "${MULTILIB_WRAPPED_HEADERS[@]}"; do
428 # drop leading slash if it's there
429 f=${f#/}
430
431 if [[ ${f} != usr/include/* ]]; then
432 die "Wrapping headers outside of /usr/include is not supported at the moment."
433 fi
434 # and then usr/include
435 f=${f#usr/include}
436
437 local dir=${f%/*}
438
439 # Some ABIs may have install less files than others.
440 if [[ -f ${root}/usr/include${f} ]]; then
441 local wrapper=${ED}/tmp/multilib-include${f}
442
443 if [[ ! -f ${ED}/tmp/multilib-include${f} ]]; then
444 dodir "/tmp/multilib-include${dir}"
445 # a generic template
446 cat > "${wrapper}" <<_EOF_
447 /* This file is auto-generated by multilib-build.eclass
448 * as a multilib-friendly wrapper. For the original content,
449 * please see the files that are #included below.
450 */
451
452 #if defined(__x86_64__) /* amd64 */
453 # if defined(__ILP32__) /* x32 ABI */
454 # error "abi_x86_x32 not supported by the package."
455 # else /* 64-bit ABI */
456 # error "abi_x86_64 not supported by the package."
457 # endif
458 #elif defined(__i386__) /* plain x86 */
459 # error "abi_x86_32 not supported by the package."
460 #elif defined(__mips__)
461 # if(_MIPS_SIM == _ABIN32) /* n32 */
462 # error "abi_mips_n32 not supported by the package."
463 # elif(_MIPS_SIM == _ABI64) /* n64 */
464 # error "abi_mips_n64 not supported by the package."
465 # elif(_MIPS_SIM == _ABIO32) /* o32 */
466 # error "abi_mips_o32 not supported by the package."
467 # endif
468 #elif defined(__sparc__)
469 # if defined(__arch64__)
470 # error "abi_sparc_64 not supported by the package."
471 # else
472 # error "abi_sparc_32 not supported by the package."
473 # endif
474 #elif defined(__s390__)
475 # if defined(__s390x__)
476 # error "abi_s390_64 not supported by the package."
477 # else
478 # error "abi_s390_32 not supported by the package."
479 # endif
480 #elif defined(__powerpc__)
481 # if defined(__powerpc64__)
482 # error "abi_ppc_64 not supported by the package."
483 # else
484 # error "abi_ppc_32 not supported by the package."
485 # endif
486 #elif defined(SWIG) /* https://sourceforge.net/p/swig/bugs/799/ */
487 # error "Native ABI not supported by the package."
488 #else
489 # error "No ABI matched, please report a bug to bugs.gentoo.org"
490 #endif
491 _EOF_
492 fi
493
494 if ! grep -q "${MULTILIB_ABI_FLAG} " "${wrapper}"
495 then
496 die "Flag ${MULTILIB_ABI_FLAG} not listed in wrapper template. Please report a bug to https://bugs.gentoo.org."
497 fi
498
499 # $CHOST shall be set by multilib_toolchain_setup
500 dodir "/tmp/multilib-include/${CHOST}${dir}"
501 mv "${root}/usr/include${f}" "${ED}/tmp/multilib-include/${CHOST}${dir}/" || die
502
503 # Note: match a space afterwards to avoid collision potential.
504 sed -e "/${MULTILIB_ABI_FLAG} /s&error.*&include <${CHOST}${f}>&" \
505 -i "${wrapper}" || die
506
507 # Hack for emul-linux-x86 compatibility.
508 # It assumes amd64 will come after x86, and will use amd64
509 # headers if no specific x86 headers were installed.
510 if [[ ${ABI} == amd64 ]]; then
511 sed -e "/abi_x86_32 /s&error.*&include <${CHOST}${f}>&" \
512 -i "${wrapper}" || die
513 fi
514
515 # Needed for swig.
516 if multilib_is_native_abi; then
517 sed -e "/Native ABI/s&error.*&include <${CHOST}${f}>&" \
518 -i "${wrapper}" || die
519 fi
520 fi
521 done
522 fi
523 fi
524 }
525
526 # @FUNCTION: multilib_install_wrappers
527 # @USAGE: [<install-root>]
528 # @DESCRIPTION:
529 # Install the previously-prepared wrappers. This function shall
530 # be called once, after all wrappers were prepared.
531 #
532 # Takes an optional custom <install-root> to which the wrappers will be
533 # installed. If no root is specified, uses ${ED}. There is no need to
534 # use the same root as when preparing the wrappers.
535 #
536 # The files to be wrapped are specified using separate variables,
537 # e.g. MULTILIB_WRAPPED_HEADERS. Those variables shall not be changed
538 # between the calls to multilib_prepare_wrappers
539 # and multilib_install_wrappers.
540 multilib_install_wrappers() {
541 debug-print-function ${FUNCNAME} "${@}"
542
543 [[ ${#} -le 1 ]] || die "${FUNCNAME}: too many arguments"
544
545 [[ ${COMPLETE_MULTILIB} == yes ]] && return
546
547 local root=${1:-${ED}}
548
549 if [[ -d "${ED}"/tmp/multilib-include ]]; then
550 multibuild_merge_root \
551 "${ED}"/tmp/multilib-include "${root}"/usr/include
552 # it can fail if something else uses /tmp
553 rmdir "${ED}"/tmp &>/dev/null
554 fi
555 }
556
557 # @FUNCTION: multilib_is_native_abi
558 # @DESCRIPTION:
559 # Determine whether the currently built ABI is the profile native.
560 # Return true status (0) if that is true, otherwise false (1).
561 #
562 # This function is not intended to be used directly. Please use
563 # multilib_build_binaries instead.
564 multilib_is_native_abi() {
565 debug-print-function ${FUNCNAME} "${@}"
566
567 [[ ${#} -eq 0 ]] || die "${FUNCNAME}: too many arguments"
568
569 [[ ${COMPLETE_MULTILIB} == yes || ${ABI} == ${DEFAULT_ABI} ]]
570 }
571
572 # @FUNCTION: multilib_build_binaries
573 # @DESCRIPTION:
574 # Determine whether to build binaries for the currently built ABI.
575 # Returns true status (0) if the currently built ABI is the profile
576 # native or COMPLETE_MULTILIB variable is set to 'yes', otherwise
577 # false (1).
578 #
579 # This is often useful for configure calls when some of the options are
580 # supposed to be disabled for multilib ABIs (like those used for
581 # executables only).
582 multilib_build_binaries() {
583 debug-print-function ${FUNCNAME} "${@}"
584
585 eqawarn "QA warning: multilib_build_binaries is deprecated. Please use the equivalent"
586 eqawarn "multilib_is_native_abi function instead."
587
588 multilib_is_native_abi "${@}"
589 }
590
591 # @FUNCTION: multilib_native_use_with
592 # @USAGE: <flag> [<opt-name> [<opt-value>]]
593 # @DESCRIPTION:
594 # Output --with configure option alike use_with if USE <flag> is enabled
595 # and executables are being built (multilib_is_native_abi is true).
596 # Otherwise, outputs --without configure option. Arguments are the same
597 # as for use_with in the EAPI.
598 multilib_native_use_with() {
599 if multilib_is_native_abi; then
600 use_with "${@}"
601 else
602 echo "--without-${2:-${1}}"
603 fi
604 }
605
606 # @FUNCTION: multilib_native_use_enable
607 # @USAGE: <flag> [<opt-name> [<opt-value>]]
608 # @DESCRIPTION:
609 # Output --enable configure option alike use_with if USE <flag>
610 # is enabled and executables are being built (multilib_is_native_abi
611 # is true). Otherwise, outputs --disable configure option. Arguments are
612 # the same as for use_enable in the EAPI.
613 multilib_native_use_enable() {
614 if multilib_is_native_abi; then
615 use_enable "${@}"
616 else
617 echo "--disable-${2:-${1}}"
618 fi
619 }
620
621 # @FUNCTION: multilib_native_usex
622 # @USAGE: <flag> [<true1> [<false1> [<true2> [<false2>]]]]
623 # @DESCRIPTION:
624 # Output the concatenation of <true1> (or 'yes' if unspecified)
625 # and <true2> if USE <flag> is enabled and executables are being built
626 # (multilib_is_native_abi is true). Otherwise, output the concatenation
627 # of <false1> (or 'no' if unspecified) and <false2>. Arguments
628 # are the same as for usex in the EAPI.
629 #
630 # Note: in EAPI 4 you need to inherit eutils to use this function.
631 multilib_native_usex() {
632 if multilib_is_native_abi; then
633 usex "${@}"
634 else
635 echo "${3-no}${5}"
636 fi
637 }
638
639 _MULTILIB_BUILD=1
640 fi

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