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Revision 1.21 - (hide annotations) (download)
Mon Sep 30 07:27:06 2013 UTC (11 months, 2 weeks ago) by mgorny
Branch: MAIN
Changes since 1.20: +15 -11 lines
Fix duplicate flags in MULTILIB_USEDEP. Thanks for the report and the patch to Ulrich Mueller.

1 mgorny 1.1 # Copyright 1999-2013 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3 mgorny 1.21 # $Header: /var/cvsroot/gentoo-x86/eclass/multilib-build.eclass,v 1.20 2013/09/17 13:29:19 tommy Exp $
4 mgorny 1.1
5     # @ECLASS: multilib-build.eclass
6     # @MAINTAINER:
7     # Michał Górny <mgorny@gentoo.org>
8     # @BLURB: flags and utility functions for building multilib packages
9     # @DESCRIPTION:
10     # The multilib-build.eclass exports USE flags and utility functions
11     # necessary to build packages for multilib in a clean and uniform
12     # manner.
13     #
14     # Please note that dependency specifications for multilib-capable
15     # dependencies shall use the USE dependency string in ${MULTILIB_USEDEP}
16     # to properly request multilib enabled.
17    
18     if [[ ! ${_MULTILIB_BUILD} ]]; then
19    
20 mgorny 1.12 # EAPI=4 is required for meaningful MULTILIB_USEDEP.
21 mgorny 1.1 case ${EAPI:-0} in
22 mgorny 1.12 4|5) ;;
23 mgorny 1.1 *) die "EAPI=${EAPI} is not supported" ;;
24     esac
25    
26 mgorny 1.8 inherit multibuild multilib
27 mgorny 1.1
28     # @ECLASS-VARIABLE: _MULTILIB_FLAGS
29     # @INTERNAL
30     # @DESCRIPTION:
31 mgorny 1.21 # The list of multilib flags and corresponding ABI values. If the same
32     # flag is reused for multiple ABIs (e.g. x86 on Linux&FreeBSD), multiple
33     # ABIs may be separated by commas.
34 mgorny 1.1 _MULTILIB_FLAGS=(
35 mgorny 1.21 abi_x86_32:x86,x86_fbsd
36     abi_x86_64:amd64,amd64_fbsd
37 mgorny 1.6 abi_x86_x32:x32
38 mattst88 1.17 abi_mips_n32:n32
39     abi_mips_n64:n64
40     abi_mips_o32:o32
41 mgorny 1.1 )
42    
43     # @ECLASS-VARIABLE: MULTILIB_USEDEP
44     # @DESCRIPTION:
45     # The USE-dependency to be used on dependencies (libraries) needing
46     # to support multilib as well.
47     #
48     # Example use:
49     # @CODE
50     # RDEPEND="dev-libs/libfoo[${MULTILIB_USEDEP}]
51     # net-libs/libbar[ssl,${MULTILIB_USEDEP}]"
52     # @CODE
53    
54     _multilib_build_set_globals() {
55     local flags=( "${_MULTILIB_FLAGS[@]%:*}" )
56     local usedeps=${flags[@]/%/(-)?}
57    
58     IUSE=${flags[*]}
59     MULTILIB_USEDEP=${usedeps// /,}
60     }
61     _multilib_build_set_globals
62    
63     # @FUNCTION: multilib_get_enabled_abis
64     # @DESCRIPTION:
65     # Return the ordered list of enabled ABIs if multilib builds
66     # are enabled. The best (most preferred) ABI will come last.
67     #
68     # If multilib is disabled, the default ABI will be returned
69     # in order to enforce consistent testing with multilib code.
70     multilib_get_enabled_abis() {
71     debug-print-function ${FUNCNAME} "${@}"
72    
73     local abis=( $(get_all_abis) )
74    
75 mgorny 1.21 local IFS=,
76 mgorny 1.1 local abi i found
77     for abi in "${abis[@]}"; do
78     for i in "${_MULTILIB_FLAGS[@]}"; do
79 mgorny 1.21 local m_abis=${i#*:} m_abi
80 mgorny 1.1 local m_flag=${i%:*}
81    
82 mgorny 1.21 for m_abi in ${m_abis}; do
83     if [[ ${m_abi} == ${abi} ]] && use "${m_flag}"; then
84     echo "${abi}"
85     found=1
86     break 2
87     fi
88     done
89 mgorny 1.1 done
90     done
91    
92     if [[ ! ${found} ]]; then
93 mgorny 1.7 # ${ABI} can be used to override the fallback (multilib-portage),
94     # ${DEFAULT_ABI} is the safe fallback.
95     local abi=${ABI:-${DEFAULT_ABI}}
96    
97     debug-print "${FUNCNAME}: no ABIs enabled, fallback to ${abi}"
98     debug-print "${FUNCNAME}: ABI=${ABI}, DEFAULT_ABI=${DEFAULT_ABI}"
99     echo ${abi}
100 mgorny 1.1 fi
101     }
102    
103 mgorny 1.8 # @FUNCTION: _multilib_multibuild_wrapper
104     # @USAGE: <argv>...
105     # @INTERNAL
106     # @DESCRIPTION:
107     # Initialize the environment for ABI selected for multibuild.
108     _multilib_multibuild_wrapper() {
109     debug-print-function ${FUNCNAME} "${@}"
110    
111     local ABI=${MULTIBUILD_VARIANT}
112     multilib_toolchain_setup "${ABI}"
113     "${@}"
114     }
115    
116 mgorny 1.1 # @FUNCTION: multilib_foreach_abi
117     # @USAGE: <argv>...
118     # @DESCRIPTION:
119     # If multilib support is enabled, sets the toolchain up for each
120     # supported ABI along with the ABI variable and correct BUILD_DIR,
121     # and runs the given commands with them.
122     #
123     # If multilib support is disabled, it just runs the commands. No setup
124     # is done.
125     multilib_foreach_abi() {
126 mgorny 1.8 debug-print-function ${FUNCNAME} "${@}"
127 mgorny 1.1
128 mgorny 1.8 local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
129     multibuild_foreach_variant _multilib_multibuild_wrapper "${@}"
130 mgorny 1.1 }
131    
132     # @FUNCTION: multilib_parallel_foreach_abi
133     # @USAGE: <argv>...
134     # @DESCRIPTION:
135     # If multilib support is enabled, sets the toolchain up for each
136     # supported ABI along with the ABI variable and correct BUILD_DIR,
137     # and runs the given commands with them. The commands are run
138     # in parallel with number of jobs being determined from MAKEOPTS.
139     #
140     # If multilib support is disabled, it just runs the commands. No setup
141     # is done.
142     #
143     # Useful for running configure scripts.
144     multilib_parallel_foreach_abi() {
145 mgorny 1.8 debug-print-function ${FUNCNAME} "${@}"
146 mgorny 1.1
147 mgorny 1.8 local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
148     multibuild_parallel_foreach_variant _multilib_multibuild_wrapper "${@}"
149 mgorny 1.1 }
150    
151 mgorny 1.9 # @FUNCTION: multilib_for_best_abi
152     # @USAGE: <argv>...
153     # @DESCRIPTION:
154     # Runs the given command with setup for the 'best' (usually native) ABI.
155     multilib_for_best_abi() {
156     debug-print-function ${FUNCNAME} "${@}"
157    
158     local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
159    
160     multibuild_for_best_variant _multilib_multibuild_wrapper "${@}"
161     }
162    
163 mgorny 1.2 # @FUNCTION: multilib_check_headers
164     # @DESCRIPTION:
165     # Check whether the header files are consistent between ABIs.
166     #
167     # This function needs to be called after each ABI's installation phase.
168     # It obtains the header file checksums and compares them with previous
169     # runs (if any). Dies if header files differ.
170     multilib_check_headers() {
171     _multilib_header_cksum() {
172 mgorny 1.4 [[ -d ${ED}usr/include ]] && \
173 mgorny 1.2 find "${ED}"usr/include -type f \
174     -exec cksum {} + | sort -k2
175     }
176    
177     local cksum=$(_multilib_header_cksum)
178     local cksum_file=${T}/.multilib_header_cksum
179    
180     if [[ -f ${cksum_file} ]]; then
181     local cksum_prev=$(< "${cksum_file}")
182    
183     if [[ ${cksum} != ${cksum_prev} ]]; then
184     echo "${cksum}" > "${cksum_file}.new"
185    
186     eerror "Header files have changed between ABIs."
187    
188     if type -p diff &>/dev/null; then
189     eerror "$(diff -du "${cksum_file}" "${cksum_file}.new")"
190     else
191     eerror "Old checksums in: ${cksum_file}"
192     eerror "New checksums in: ${cksum_file}.new"
193     fi
194    
195     die "Header checksum mismatch, aborting."
196     fi
197     else
198     echo "${cksum}" > "${cksum_file}"
199     fi
200     }
201    
202 mgorny 1.10 # @FUNCTION: multilib_copy_sources
203     # @DESCRIPTION:
204     # Create a single copy of the package sources for each enabled ABI.
205     #
206     # The sources are always copied from initial BUILD_DIR (or S if unset)
207     # to ABI-specific build directory matching BUILD_DIR used by
208     # multilib_foreach_abi().
209     multilib_copy_sources() {
210     debug-print-function ${FUNCNAME} "${@}"
211    
212     local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
213     multibuild_copy_sources
214     }
215    
216 mgorny 1.11 # @ECLASS-VARIABLE: MULTILIB_WRAPPED_HEADERS
217     # @DESCRIPTION:
218     # A list of headers to wrap for multilib support. The listed headers
219     # will be moved to a non-standard location and replaced with a file
220     # including them conditionally to current ABI.
221     #
222     # This variable has to be a bash array. Paths shall be relative to
223     # installation root (${ED}), and name regular files. Recursive wrapping
224     # is not supported.
225     #
226     # Please note that header wrapping is *discouraged*. It is preferred to
227     # install all headers in a subdirectory of libdir and use pkg-config to
228     # locate the headers. Some C preprocessors will not work with wrapped
229     # headers.
230     #
231     # Example:
232     # @CODE
233     # MULTILIB_WRAPPED_HEADERS=(
234     # /usr/include/foobar/config.h
235     # )
236     # @CODE
237    
238     # @FUNCTION: multilib_prepare_wrappers
239     # @USAGE: [<install-root>]
240     # @DESCRIPTION:
241     # Perform the preparation of all kinds of wrappers for the current ABI.
242     # This function shall be called once per each ABI, after installing
243     # the files to be wrapped.
244     #
245     # Takes an optional custom <install-root> from which files will be
246     # used. If no root is specified, uses ${ED}.
247     #
248     # The files to be wrapped are specified using separate variables,
249     # e.g. MULTILIB_WRAPPED_HEADERS. Those variables shall not be changed
250     # between the successive calls to multilib_prepare_wrappers
251     # and multilib_install_wrappers.
252     #
253     # After all wrappers are prepared, multilib_install_wrappers shall
254     # be called to commit them to the installation tree.
255     multilib_prepare_wrappers() {
256     debug-print-function ${FUNCNAME} "${@}"
257    
258     [[ ${#} -le 1 ]] || die "${FUNCNAME}: too many arguments"
259    
260     local root=${1:-${ED}}
261     local f
262    
263     for f in "${MULTILIB_WRAPPED_HEADERS[@]}"; do
264     # drop leading slash if it's there
265     f=${f#/}
266    
267     if [[ ${f} != usr/include/* ]]; then
268     die "Wrapping headers outside of /usr/include is not supported at the moment."
269     fi
270     # and then usr/include
271     f=${f#usr/include}
272    
273     local dir=${f%/*}
274    
275     if [[ ! -f ${ED}/tmp/multilib-include${f} ]]; then
276     dodir "/tmp/multilib-include${dir}"
277     # a generic template
278 mgorny 1.13 cat > "${ED}/tmp/multilib-include${f}" <<_EOF_
279 mgorny 1.11 /* This file is auto-generated by multilib-build.eclass
280     * as a multilib-friendly wrapper. For the original content,
281     * please see the files that are #included below.
282     */
283    
284     #if defined(__x86_64__) /* amd64 */
285     # if defined(__ILP32__) /* x32 ABI */
286     # error "abi_x86_x32 not supported by the package."
287     # else /* 64-bit ABI */
288     # error "abi_x86_64 not supported by the package."
289     # endif
290     #elif defined(__i386__) /* plain x86 */
291     # error "abi_x86_32 not supported by the package."
292 mattst88 1.17 #elif defined(__mips__)
293     # if(_MIPS_SIM == _ABIN32) /* n32 */
294     # error "abi_mips_n32 not supported by the package."
295     # elif(_MIPS_SIM == _ABI64) /* n64 */
296     # error "abi_mips_n64 not supported by the package."
297     # elif(_MIPS_SIM == _ABIO32) /* o32 */
298     # error "abi_mips_o32 not supported by the package."
299     # endif
300 mgorny 1.11 #else
301     # error "No ABI matched, please report a bug to bugs.gentoo.org"
302     #endif
303     _EOF_
304     fi
305    
306 mgorny 1.18 # Some ABIs may have install less files than others.
307     if [[ -f ${root}/usr/include${f} ]]; then
308     # $CHOST shall be set by multilib_toolchain_setup
309     dodir "/tmp/multilib-include/${CHOST}${dir}"
310     mv "${root}/usr/include${f}" "${ED}/tmp/multilib-include/${CHOST}${dir}/" || die
311    
312     # XXX: get abi_* directly
313     local abi_flag
314     case "${ABI}" in
315     amd64|amd64_fbsd)
316     abi_flag=abi_x86_64;;
317     x86|x86_fbsd)
318     abi_flag=abi_x86_32;;
319     x32)
320     abi_flag=abi_x86_x32;;
321     n32)
322     abi_flag=abi_mips_n32;;
323     n64)
324     abi_flag=abi_mips_n64;;
325     o32)
326     abi_flag=abi_mips_o32;;
327     *)
328     die "Header wrapping for ${ABI} not supported yet";;
329     esac
330    
331     # Note: match a space afterwards to avoid collision potential.
332     sed -e "/${abi_flag} /s&error.*&include <${CHOST}${f}>&" \
333     -i "${ED}/tmp/multilib-include${f}" || die
334     fi
335 mgorny 1.11 done
336     }
337    
338     # @FUNCTION: multilib_install_wrappers
339     # @USAGE: [<install-root>]
340     # @DESCRIPTION:
341     # Install the previously-prepared wrappers. This function shall
342     # be called once, after all wrappers were prepared.
343     #
344     # Takes an optional custom <install-root> to which the wrappers will be
345     # installed. If no root is specified, uses ${ED}. There is no need to
346     # use the same root as when preparing the wrappers.
347     #
348     # The files to be wrapped are specified using separate variables,
349     # e.g. MULTILIB_WRAPPED_HEADERS. Those variables shall not be changed
350     # between the calls to multilib_prepare_wrappers
351     # and multilib_install_wrappers.
352     multilib_install_wrappers() {
353     debug-print-function ${FUNCNAME} "${@}"
354    
355     [[ ${#} -le 1 ]] || die "${FUNCNAME}: too many arguments"
356    
357     local root=${1:-${ED}}
358    
359     if [[ -d "${ED}"/tmp/multilib-include ]]; then
360     multibuild_merge_root \
361     "${ED}"/tmp/multilib-include "${root}"/usr/include
362     # it can fail if something else uses /tmp
363     rmdir "${ED}"/tmp &>/dev/null
364     fi
365     }
366    
367 mgorny 1.15 # @FUNCTION: multilib_is_native_abi
368     # @DESCRIPTION:
369     # Determine whether the currently built ABI is the profile native.
370     # Return true status (0) if that is true, otherwise false (1).
371     #
372     # This is often useful for configure calls when some of the options are
373     # supposed to be disabled for multilib ABIs (like those used for
374     # executables only).
375     multilib_is_native_abi() {
376     debug-print-function ${FUNCNAME} "${@}"
377    
378     [[ ${#} -eq 0 ]] || die "${FUNCNAME}: too many arguments"
379    
380     [[ ${ABI} == ${DEFAULT_ABI} ]]
381     }
382    
383 tommy 1.20 # @FUNCTION: multilib_build_binaries
384     # @DESCRIPTION:
385     # Determine wheter to build binaries for the current build ABI.
386     # Returns true status (0) if the current built ABI is the profile
387     # native or COMPLETE_MULTILIB variable is set to yes, otherwise
388     # false (1).
389     #
390     # The COMPLETE_MULTILIB variable can be set by users or profiles
391     # when they want to build binaries for none-default ABI so e.g.
392     # 32bit binaries on amd64.
393 tommy 1.19 multilib_build_binaries() {
394     debug-print-function ${FUNCNAME} "${@}"
395    
396     [[ ${#} -eq 0 ]] || die "${FUNCNAME}: too many arguments"
397    
398     [[ ${COMPLETE_MULTILIB} == yes ]] || multilib_is_native_abi
399     }
400 tommy 1.20
401 mgorny 1.1 _MULTILIB_BUILD=1
402     fi

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