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Revision 1.48 - (hide annotations) (download)
Mon May 12 21:56:17 2014 UTC (5 months, 1 week ago) by mgorny
Branch: MAIN
Changes since 1.47: +8 -8 lines
Do not install wrapper headers when no ABI provides a particular header.

1 mgorny 1.26 # Copyright 1999-2014 Gentoo Foundation
2 mgorny 1.1 # Distributed under the terms of the GNU General Public License v2
3 mgorny 1.48 # $Header: /var/cvsroot/gentoo-x86/eclass/multilib-build.eclass,v 1.47 2014/05/07 17:33:49 mgorny Exp $
4 mgorny 1.1
5     # @ECLASS: multilib-build.eclass
6     # @MAINTAINER:
7 mgorny 1.34 # gx86-multilib team <multilib@gentoo.org>
8     # @AUTHOR:
9     # Author: Michał Górny <mgorny@gentoo.org>
10 mgorny 1.1 # @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 mgorny 1.12 # EAPI=4 is required for meaningful MULTILIB_USEDEP.
23 mgorny 1.1 case ${EAPI:-0} in
24 mgorny 1.12 4|5) ;;
25 mgorny 1.1 *) die "EAPI=${EAPI} is not supported" ;;
26     esac
27    
28 mgorny 1.8 inherit multibuild multilib
29 mgorny 1.1
30     # @ECLASS-VARIABLE: _MULTILIB_FLAGS
31     # @INTERNAL
32     # @DESCRIPTION:
33 mgorny 1.21 # 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 mgorny 1.33 #
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 mgorny 1.1 _MULTILIB_FLAGS=(
41 mgorny 1.21 abi_x86_32:x86,x86_fbsd
42     abi_x86_64:amd64,amd64_fbsd
43 mgorny 1.6 abi_x86_x32:x32
44 mattst88 1.17 abi_mips_n32:n32
45     abi_mips_n64:n64
46     abi_mips_o32:o32
47 mgorny 1.1 )
48    
49 mgorny 1.46 # @ECLASS-VARIABLE: MULTILIB_COMPAT
50     # @DEFAULT_UNSET
51     # @DESCRIPTION:
52     # List of multilib ABIs supported by the ebuild. If unset, defaults to
53     # all ABIs supported by the eclass.
54     #
55     # This variable is intended for use in prebuilt multilib packages that
56     # can provide binaries only for a limited set of ABIs. If ABIs need to
57     # be limited due to a bug in source code, package.use.mask is
58     # recommended instead.
59     #
60     # Example use:
61     # @CODE
62     # # Upstream provides binaries for x86 & amd64 only
63     # MULTILIB_COMPAT=( abi_x86_{32,64} )
64     # @CODE
65    
66 mgorny 1.1 # @ECLASS-VARIABLE: MULTILIB_USEDEP
67     # @DESCRIPTION:
68     # The USE-dependency to be used on dependencies (libraries) needing
69     # to support multilib as well.
70     #
71     # Example use:
72     # @CODE
73     # RDEPEND="dev-libs/libfoo[${MULTILIB_USEDEP}]
74     # net-libs/libbar[ssl,${MULTILIB_USEDEP}]"
75     # @CODE
76    
77     _multilib_build_set_globals() {
78     local flags=( "${_MULTILIB_FLAGS[@]%:*}" )
79 mgorny 1.46
80     if [[ ${MULTILIB_COMPAT[@]} ]]; then
81     # Validate MULTILIB_COMPAT and filter out the flags.
82     local f
83     for f in "${MULTILIB_COMPAT[@]}"; do
84     if ! has "${f}" "${flags[@]}"; then
85     die "Invalid value in MULTILIB_COMPAT: ${f}"
86     fi
87     done
88    
89     flags=( "${MULTILIB_COMPAT[@]}" )
90     fi
91    
92 mgorny 1.1 local usedeps=${flags[@]/%/(-)?}
93    
94     IUSE=${flags[*]}
95     MULTILIB_USEDEP=${usedeps// /,}
96     }
97     _multilib_build_set_globals
98    
99     # @FUNCTION: multilib_get_enabled_abis
100     # @DESCRIPTION:
101     # Return the ordered list of enabled ABIs if multilib builds
102     # are enabled. The best (most preferred) ABI will come last.
103     #
104     # If multilib is disabled, the default ABI will be returned
105     # in order to enforce consistent testing with multilib code.
106     multilib_get_enabled_abis() {
107     debug-print-function ${FUNCNAME} "${@}"
108    
109     local abis=( $(get_all_abis) )
110    
111     local abi i found
112     for abi in "${abis[@]}"; do
113     for i in "${_MULTILIB_FLAGS[@]}"; do
114 mgorny 1.21 local m_abis=${i#*:} m_abi
115 mgorny 1.1 local m_flag=${i%:*}
116    
117 mgorny 1.22 # split on ,; we can't switch IFS for function scope because
118     # paludis is broken (bug #486592), and switching it locally
119 mgorny 1.23 # for the split is more complex than cheating like this
120     for m_abi in ${m_abis//,/ }; do
121 mgorny 1.21 if [[ ${m_abi} == ${abi} ]] && use "${m_flag}"; then
122     echo "${abi}"
123     found=1
124     break 2
125     fi
126     done
127 mgorny 1.1 done
128     done
129    
130     if [[ ! ${found} ]]; then
131 mgorny 1.7 # ${ABI} can be used to override the fallback (multilib-portage),
132     # ${DEFAULT_ABI} is the safe fallback.
133     local abi=${ABI:-${DEFAULT_ABI}}
134    
135     debug-print "${FUNCNAME}: no ABIs enabled, fallback to ${abi}"
136     debug-print "${FUNCNAME}: ABI=${ABI}, DEFAULT_ABI=${DEFAULT_ABI}"
137     echo ${abi}
138 mgorny 1.1 fi
139     }
140    
141 mgorny 1.8 # @FUNCTION: _multilib_multibuild_wrapper
142     # @USAGE: <argv>...
143     # @INTERNAL
144     # @DESCRIPTION:
145     # Initialize the environment for ABI selected for multibuild.
146     _multilib_multibuild_wrapper() {
147     debug-print-function ${FUNCNAME} "${@}"
148    
149     local ABI=${MULTIBUILD_VARIANT}
150     multilib_toolchain_setup "${ABI}"
151     "${@}"
152     }
153    
154 mgorny 1.1 # @FUNCTION: multilib_foreach_abi
155     # @USAGE: <argv>...
156     # @DESCRIPTION:
157     # If multilib support is enabled, sets the toolchain up for each
158     # supported ABI along with the ABI variable and correct BUILD_DIR,
159     # and runs the given commands with them.
160     #
161     # If multilib support is disabled, it just runs the commands. No setup
162     # is done.
163     multilib_foreach_abi() {
164 mgorny 1.8 debug-print-function ${FUNCNAME} "${@}"
165 mgorny 1.1
166 mgorny 1.8 local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
167     multibuild_foreach_variant _multilib_multibuild_wrapper "${@}"
168 mgorny 1.1 }
169    
170     # @FUNCTION: multilib_parallel_foreach_abi
171     # @USAGE: <argv>...
172     # @DESCRIPTION:
173     # If multilib support is enabled, sets the toolchain up for each
174     # supported ABI along with the ABI variable and correct BUILD_DIR,
175     # and runs the given commands with them. The commands are run
176     # in parallel with number of jobs being determined from MAKEOPTS.
177     #
178     # If multilib support is disabled, it just runs the commands. No setup
179     # is done.
180     #
181     # Useful for running configure scripts.
182     multilib_parallel_foreach_abi() {
183 mgorny 1.8 debug-print-function ${FUNCNAME} "${@}"
184 mgorny 1.1
185 mgorny 1.8 local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
186     multibuild_parallel_foreach_variant _multilib_multibuild_wrapper "${@}"
187 mgorny 1.1 }
188    
189 mgorny 1.9 # @FUNCTION: multilib_for_best_abi
190     # @USAGE: <argv>...
191     # @DESCRIPTION:
192     # Runs the given command with setup for the 'best' (usually native) ABI.
193     multilib_for_best_abi() {
194     debug-print-function ${FUNCNAME} "${@}"
195    
196     local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
197    
198     multibuild_for_best_variant _multilib_multibuild_wrapper "${@}"
199     }
200    
201 mgorny 1.2 # @FUNCTION: multilib_check_headers
202     # @DESCRIPTION:
203     # Check whether the header files are consistent between ABIs.
204     #
205     # This function needs to be called after each ABI's installation phase.
206     # It obtains the header file checksums and compares them with previous
207     # runs (if any). Dies if header files differ.
208     multilib_check_headers() {
209     _multilib_header_cksum() {
210 mgorny 1.4 [[ -d ${ED}usr/include ]] && \
211 mgorny 1.2 find "${ED}"usr/include -type f \
212     -exec cksum {} + | sort -k2
213     }
214    
215     local cksum=$(_multilib_header_cksum)
216     local cksum_file=${T}/.multilib_header_cksum
217    
218     if [[ -f ${cksum_file} ]]; then
219     local cksum_prev=$(< "${cksum_file}")
220    
221     if [[ ${cksum} != ${cksum_prev} ]]; then
222     echo "${cksum}" > "${cksum_file}.new"
223    
224     eerror "Header files have changed between ABIs."
225    
226     if type -p diff &>/dev/null; then
227     eerror "$(diff -du "${cksum_file}" "${cksum_file}.new")"
228     else
229     eerror "Old checksums in: ${cksum_file}"
230     eerror "New checksums in: ${cksum_file}.new"
231     fi
232    
233     die "Header checksum mismatch, aborting."
234     fi
235     else
236     echo "${cksum}" > "${cksum_file}"
237     fi
238     }
239    
240 mgorny 1.10 # @FUNCTION: multilib_copy_sources
241     # @DESCRIPTION:
242     # Create a single copy of the package sources for each enabled ABI.
243     #
244     # The sources are always copied from initial BUILD_DIR (or S if unset)
245     # to ABI-specific build directory matching BUILD_DIR used by
246     # multilib_foreach_abi().
247     multilib_copy_sources() {
248     debug-print-function ${FUNCNAME} "${@}"
249    
250     local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
251     multibuild_copy_sources
252     }
253    
254 mgorny 1.11 # @ECLASS-VARIABLE: MULTILIB_WRAPPED_HEADERS
255     # @DESCRIPTION:
256     # A list of headers to wrap for multilib support. The listed headers
257     # will be moved to a non-standard location and replaced with a file
258     # including them conditionally to current ABI.
259     #
260     # This variable has to be a bash array. Paths shall be relative to
261     # installation root (${ED}), and name regular files. Recursive wrapping
262     # is not supported.
263     #
264     # Please note that header wrapping is *discouraged*. It is preferred to
265     # install all headers in a subdirectory of libdir and use pkg-config to
266     # locate the headers. Some C preprocessors will not work with wrapped
267     # headers.
268     #
269     # Example:
270     # @CODE
271     # MULTILIB_WRAPPED_HEADERS=(
272     # /usr/include/foobar/config.h
273     # )
274     # @CODE
275    
276 mgorny 1.26 # @ECLASS-VARIABLE: MULTILIB_CHOST_TOOLS
277     # @DESCRIPTION:
278     # A list of tool executables to preserve for each multilib ABI.
279     # The listed executables will be renamed to ${CHOST}-${basename},
280     # and the native variant will be symlinked to the generic name.
281     #
282     # This variable has to be a bash array. Paths shall be relative to
283 mgorny 1.29 # installation root (${ED}), and name regular files or symbolic
284     # links to regular files. Recursive wrapping is not supported.
285     #
286     # If symbolic link is passed, both symlink path and symlink target
287     # will be changed. As a result, the symlink target is expected
288     # to be wrapped as well (either by listing in MULTILIB_CHOST_TOOLS
289     # or externally).
290 mgorny 1.26 #
291     # Please note that tool wrapping is *discouraged*. It is preferred to
292     # install pkg-config files for each ABI, and require reverse
293     # dependencies to use that.
294     #
295     # Packages that search for tools properly (e.g. using AC_PATH_TOOL
296     # macro) will find the wrapper executables automatically. Other packages
297     # will need explicit override of tool paths.
298     #
299     # Example:
300     # @CODE
301     # MULTILIB_CHOST_TOOLS=(
302     # /usr/bin/foo-config
303     # )
304    
305     # @CODE
306 mgorny 1.11 # @FUNCTION: multilib_prepare_wrappers
307     # @USAGE: [<install-root>]
308     # @DESCRIPTION:
309     # Perform the preparation of all kinds of wrappers for the current ABI.
310     # This function shall be called once per each ABI, after installing
311     # the files to be wrapped.
312     #
313     # Takes an optional custom <install-root> from which files will be
314     # used. If no root is specified, uses ${ED}.
315     #
316     # The files to be wrapped are specified using separate variables,
317     # e.g. MULTILIB_WRAPPED_HEADERS. Those variables shall not be changed
318     # between the successive calls to multilib_prepare_wrappers
319     # and multilib_install_wrappers.
320     #
321     # After all wrappers are prepared, multilib_install_wrappers shall
322     # be called to commit them to the installation tree.
323     multilib_prepare_wrappers() {
324     debug-print-function ${FUNCNAME} "${@}"
325    
326     [[ ${#} -le 1 ]] || die "${FUNCNAME}: too many arguments"
327    
328     local root=${1:-${ED}}
329     local f
330    
331 mgorny 1.43 if [[ ${COMPLETE_MULTILIB} == yes ]]; then
332     # symlink '${CHOST}-foo -> foo' to support abi-wrapper while
333     # keeping ${CHOST}-foo calls correct.
334    
335     for f in "${MULTILIB_CHOST_TOOLS[@]}"; do
336     # drop leading slash if it's there
337     f=${f#/}
338    
339     local dir=${f%/*}
340     local fn=${f##*/}
341    
342     ln -s "${fn}" "${root}/${dir}/${CHOST}-${fn}" || die
343     done
344    
345     return
346     fi
347    
348 mgorny 1.44 for f in "${MULTILIB_CHOST_TOOLS[@]}"; do
349     # drop leading slash if it's there
350     f=${f#/}
351    
352     local dir=${f%/*}
353     local fn=${f##*/}
354    
355     if [[ -L ${root}/${f} ]]; then
356     # rewrite the symlink target
357     local target=$(readlink "${root}/${f}")
358     local target_dir
359     local target_fn=${target##*/}
360    
361     [[ ${target} == */* ]] && target_dir=${target%/*}
362    
363     ln -f -s "${target_dir+${target_dir}/}${CHOST}-${target_fn}" \
364     "${root}/${f}" || die
365     fi
366    
367     mv "${root}/${f}" "${root}/${dir}/${CHOST}-${fn}" || die
368    
369     # symlink the native one back
370     if multilib_is_native_abi; then
371     ln -s "${CHOST}-${fn}" "${root}/${f}" || die
372     fi
373     done
374    
375 mgorny 1.45 if [[ ${MULTILIB_WRAPPED_HEADERS[@]} ]]; then
376     # XXX: get abi_* directly
377     local abi_flag
378     case "${ABI}" in
379     amd64|amd64_fbsd)
380     abi_flag=abi_x86_64;;
381     x86|x86_fbsd)
382     abi_flag=abi_x86_32;;
383     x32)
384     abi_flag=abi_x86_x32;;
385     n32)
386     abi_flag=abi_mips_n32;;
387     n64)
388     abi_flag=abi_mips_n64;;
389     o32)
390     abi_flag=abi_mips_o32;;
391     esac
392    
393     # If abi_flag is unset, then header wrapping is unsupported
394     # on this ABI. This could mean either that:
395     #
396     # 1) the arch doesn't support multilib at all -- in this case,
397     # the headers are not wrapped and everything works as expected,
398     #
399     # 2) someone added new ABI and forgot to update the function --
400     # in this case, the header consistency check will notice one of
401     # those ABIs has an extra header (compared to the header moved
402     # for wrapping) and will fail.
403    
404     if [[ ${abi_flag} ]]; then
405     for f in "${MULTILIB_WRAPPED_HEADERS[@]}"; do
406     # drop leading slash if it's there
407     f=${f#/}
408 mgorny 1.11
409 mgorny 1.45 if [[ ${f} != usr/include/* ]]; then
410     die "Wrapping headers outside of /usr/include is not supported at the moment."
411     fi
412     # and then usr/include
413     f=${f#usr/include}
414 mgorny 1.11
415 mgorny 1.45 local dir=${f%/*}
416 mgorny 1.11
417 mgorny 1.48 # Some ABIs may have install less files than others.
418     if [[ -f ${root}/usr/include${f} ]]; then
419     if [[ ! -f ${ED}/tmp/multilib-include${f} ]]; then
420     dodir "/tmp/multilib-include${dir}"
421     # a generic template
422     cat > "${ED}/tmp/multilib-include${f}" <<_EOF_
423 mgorny 1.11 /* This file is auto-generated by multilib-build.eclass
424     * as a multilib-friendly wrapper. For the original content,
425     * please see the files that are #included below.
426     */
427    
428     #if defined(__x86_64__) /* amd64 */
429     # if defined(__ILP32__) /* x32 ABI */
430     # error "abi_x86_x32 not supported by the package."
431     # else /* 64-bit ABI */
432     # error "abi_x86_64 not supported by the package."
433     # endif
434     #elif defined(__i386__) /* plain x86 */
435     # error "abi_x86_32 not supported by the package."
436 mattst88 1.17 #elif defined(__mips__)
437     # if(_MIPS_SIM == _ABIN32) /* n32 */
438     # error "abi_mips_n32 not supported by the package."
439     # elif(_MIPS_SIM == _ABI64) /* n64 */
440     # error "abi_mips_n64 not supported by the package."
441     # elif(_MIPS_SIM == _ABIO32) /* o32 */
442     # error "abi_mips_o32 not supported by the package."
443     # endif
444 mgorny 1.11 #else
445     # error "No ABI matched, please report a bug to bugs.gentoo.org"
446     #endif
447     _EOF_
448 mgorny 1.48 fi
449 mgorny 1.11
450 mgorny 1.45 # $CHOST shall be set by multilib_toolchain_setup
451     dodir "/tmp/multilib-include/${CHOST}${dir}"
452     mv "${root}/usr/include${f}" "${ED}/tmp/multilib-include/${CHOST}${dir}/" || die
453    
454     # Note: match a space afterwards to avoid collision potential.
455     sed -e "/${abi_flag} /s&error.*&include <${CHOST}${f}>&" \
456     -i "${ED}/tmp/multilib-include${f}" || die
457 mgorny 1.47
458     # Hack for emul-linux-x86 compatibility.
459     # It assumes amd64 will come after x86, and will use amd64
460     # headers if no specific x86 headers were installed.
461     if [[ ${ABI} == amd64 ]]; then
462     sed -e "/abi_x86_32 /s&error.*&include <${CHOST}${f}>&" \
463     -i "${ED}/tmp/multilib-include${f}" || die
464     fi
465 mgorny 1.45 fi
466     done
467 mgorny 1.18 fi
468 mgorny 1.45 fi
469 mgorny 1.11 }
470    
471     # @FUNCTION: multilib_install_wrappers
472     # @USAGE: [<install-root>]
473     # @DESCRIPTION:
474     # Install the previously-prepared wrappers. This function shall
475     # be called once, after all wrappers were prepared.
476     #
477     # Takes an optional custom <install-root> to which the wrappers will be
478     # installed. If no root is specified, uses ${ED}. There is no need to
479     # use the same root as when preparing the wrappers.
480     #
481     # The files to be wrapped are specified using separate variables,
482     # e.g. MULTILIB_WRAPPED_HEADERS. Those variables shall not be changed
483     # between the calls to multilib_prepare_wrappers
484     # and multilib_install_wrappers.
485     multilib_install_wrappers() {
486     debug-print-function ${FUNCNAME} "${@}"
487    
488     [[ ${#} -le 1 ]] || die "${FUNCNAME}: too many arguments"
489    
490 mgorny 1.42 [[ ${COMPLETE_MULTILIB} == yes ]] && return
491 mgorny 1.41
492 mgorny 1.11 local root=${1:-${ED}}
493    
494     if [[ -d "${ED}"/tmp/multilib-include ]]; then
495     multibuild_merge_root \
496     "${ED}"/tmp/multilib-include "${root}"/usr/include
497     # it can fail if something else uses /tmp
498     rmdir "${ED}"/tmp &>/dev/null
499     fi
500     }
501    
502 mgorny 1.15 # @FUNCTION: multilib_is_native_abi
503     # @DESCRIPTION:
504     # Determine whether the currently built ABI is the profile native.
505     # Return true status (0) if that is true, otherwise false (1).
506     #
507 mgorny 1.25 # This function is not intended to be used directly. Please use
508     # multilib_build_binaries instead.
509 mgorny 1.15 multilib_is_native_abi() {
510     debug-print-function ${FUNCNAME} "${@}"
511    
512 mgorny 1.40 [[ ${#} -eq 0 ]] || die "${FUNCNAME}: too many arguments"
513    
514     [[ ${COMPLETE_MULTILIB} == yes || ${ABI} == ${DEFAULT_ABI} ]]
515 mgorny 1.15 }
516    
517 tommy 1.20 # @FUNCTION: multilib_build_binaries
518     # @DESCRIPTION:
519 mgorny 1.27 # Determine whether to build binaries for the currently built ABI.
520 mgorny 1.25 # Returns true status (0) if the currently built ABI is the profile
521     # native or COMPLETE_MULTILIB variable is set to 'yes', otherwise
522 tommy 1.20 # false (1).
523     #
524 mgorny 1.25 # This is often useful for configure calls when some of the options are
525     # supposed to be disabled for multilib ABIs (like those used for
526     # executables only).
527 tommy 1.19 multilib_build_binaries() {
528     debug-print-function ${FUNCNAME} "${@}"
529    
530 mgorny 1.40 eqawarn "QA warning: multilib_build_binaries is deprecated. Please use the equivalent"
531     eqawarn "multilib_is_native_abi function instead."
532 tommy 1.19
533 mgorny 1.40 multilib_is_native_abi "${@}"
534 tommy 1.19 }
535 tommy 1.20
536 mgorny 1.35 # @FUNCTION: multilib_native_use_with
537     # @USAGE: <flag> [<opt-name> [<opt-value>]]
538     # @DESCRIPTION:
539     # Output --with configure option alike use_with if USE <flag> is enabled
540 mgorny 1.40 # and executables are being built (multilib_is_native_abi is true).
541 mgorny 1.35 # Otherwise, outputs --without configure option. Arguments are the same
542     # as for use_with in the EAPI.
543     multilib_native_use_with() {
544 mgorny 1.40 if multilib_is_native_abi; then
545 mgorny 1.35 use_with "${@}"
546     else
547     echo "--without-${2:-${1}}"
548     fi
549     }
550    
551     # @FUNCTION: multilib_native_use_enable
552     # @USAGE: <flag> [<opt-name> [<opt-value>]]
553     # @DESCRIPTION:
554     # Output --enable configure option alike use_with if USE <flag>
555 mgorny 1.40 # is enabled and executables are being built (multilib_is_native_abi
556 mgorny 1.35 # is true). Otherwise, outputs --disable configure option. Arguments are
557     # the same as for use_enable in the EAPI.
558     multilib_native_use_enable() {
559 mgorny 1.40 if multilib_is_native_abi; then
560 mgorny 1.35 use_enable "${@}"
561     else
562     echo "--disable-${2:-${1}}"
563     fi
564     }
565    
566     # @FUNCTION: multilib_native_usex
567     # @USAGE: <flag> [<true1> [<false1> [<true2> [<false2>]]]]
568     # @DESCRIPTION:
569     # Output the concatenation of <true1> (or 'yes' if unspecified)
570     # and <true2> if USE <flag> is enabled and executables are being built
571 mgorny 1.40 # (multilib_is_native_abi is true). Otherwise, output the concatenation
572 mgorny 1.35 # of <false1> (or 'no' if unspecified) and <false2>. Arguments
573     # are the same as for usex in the EAPI.
574     #
575     # Note: in EAPI 4 you need to inherit eutils to use this function.
576     multilib_native_usex() {
577 mgorny 1.40 if multilib_is_native_abi; then
578 mgorny 1.35 usex "${@}"
579     else
580     echo "${3-no}${5}"
581     fi
582     }
583    
584 mgorny 1.1 _MULTILIB_BUILD=1
585     fi

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