/[gentoo-x86]/eclass/multilib-build.eclass
Gentoo

Contents of /eclass/multilib-build.eclass

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1.14 - (hide annotations) (download)
Fri Jun 28 02:37:52 2013 UTC (17 months, 3 weeks ago) by mgorny
Branch: MAIN
Changes since 1.13: +2 -2 lines
Fix redundant slashes in header-wrapping include paths, bug #475046. Thanks to Arfrever for the patch.

1 mgorny 1.1 # Copyright 1999-2013 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3 mgorny 1.14 # $Header: /var/cvsroot/gentoo-x86/eclass/multilib-build.eclass,v 1.13 2013/05/31 17:50:33 mgorny 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     # The list of multilib flags and corresponding ABI values.
32     _MULTILIB_FLAGS=(
33     abi_x86_32:x86
34     abi_x86_64:amd64
35 mgorny 1.6 abi_x86_x32:x32
36 mgorny 1.1 )
37    
38     # @ECLASS-VARIABLE: MULTILIB_USEDEP
39     # @DESCRIPTION:
40     # The USE-dependency to be used on dependencies (libraries) needing
41     # to support multilib as well.
42     #
43     # Example use:
44     # @CODE
45     # RDEPEND="dev-libs/libfoo[${MULTILIB_USEDEP}]
46     # net-libs/libbar[ssl,${MULTILIB_USEDEP}]"
47     # @CODE
48    
49     _multilib_build_set_globals() {
50     local flags=( "${_MULTILIB_FLAGS[@]%:*}" )
51     local usedeps=${flags[@]/%/(-)?}
52    
53     IUSE=${flags[*]}
54     MULTILIB_USEDEP=${usedeps// /,}
55     }
56     _multilib_build_set_globals
57    
58     # @FUNCTION: multilib_get_enabled_abis
59     # @DESCRIPTION:
60     # Return the ordered list of enabled ABIs if multilib builds
61     # are enabled. The best (most preferred) ABI will come last.
62     #
63     # If multilib is disabled, the default ABI will be returned
64     # in order to enforce consistent testing with multilib code.
65     multilib_get_enabled_abis() {
66     debug-print-function ${FUNCNAME} "${@}"
67    
68     local abis=( $(get_all_abis) )
69    
70     local abi i found
71     for abi in "${abis[@]}"; do
72     for i in "${_MULTILIB_FLAGS[@]}"; do
73     local m_abi=${i#*:}
74     local m_flag=${i%:*}
75    
76     if [[ ${m_abi} == ${abi} ]] && use "${m_flag}"; then
77     echo "${abi}"
78     found=1
79     fi
80     done
81     done
82    
83     if [[ ! ${found} ]]; then
84 mgorny 1.7 # ${ABI} can be used to override the fallback (multilib-portage),
85     # ${DEFAULT_ABI} is the safe fallback.
86     local abi=${ABI:-${DEFAULT_ABI}}
87    
88     debug-print "${FUNCNAME}: no ABIs enabled, fallback to ${abi}"
89     debug-print "${FUNCNAME}: ABI=${ABI}, DEFAULT_ABI=${DEFAULT_ABI}"
90     echo ${abi}
91 mgorny 1.1 fi
92     }
93    
94 mgorny 1.8 # @FUNCTION: _multilib_multibuild_wrapper
95     # @USAGE: <argv>...
96     # @INTERNAL
97     # @DESCRIPTION:
98     # Initialize the environment for ABI selected for multibuild.
99     _multilib_multibuild_wrapper() {
100     debug-print-function ${FUNCNAME} "${@}"
101    
102     local ABI=${MULTIBUILD_VARIANT}
103     multilib_toolchain_setup "${ABI}"
104     "${@}"
105     }
106    
107 mgorny 1.1 # @FUNCTION: multilib_foreach_abi
108     # @USAGE: <argv>...
109     # @DESCRIPTION:
110     # If multilib support is enabled, sets the toolchain up for each
111     # supported ABI along with the ABI variable and correct BUILD_DIR,
112     # and runs the given commands with them.
113     #
114     # If multilib support is disabled, it just runs the commands. No setup
115     # is done.
116     multilib_foreach_abi() {
117 mgorny 1.8 debug-print-function ${FUNCNAME} "${@}"
118 mgorny 1.1
119 mgorny 1.8 local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
120     multibuild_foreach_variant _multilib_multibuild_wrapper "${@}"
121 mgorny 1.1 }
122    
123     # @FUNCTION: multilib_parallel_foreach_abi
124     # @USAGE: <argv>...
125     # @DESCRIPTION:
126     # If multilib support is enabled, sets the toolchain up for each
127     # supported ABI along with the ABI variable and correct BUILD_DIR,
128     # and runs the given commands with them. The commands are run
129     # in parallel with number of jobs being determined from MAKEOPTS.
130     #
131     # If multilib support is disabled, it just runs the commands. No setup
132     # is done.
133     #
134     # Useful for running configure scripts.
135     multilib_parallel_foreach_abi() {
136 mgorny 1.8 debug-print-function ${FUNCNAME} "${@}"
137 mgorny 1.1
138 mgorny 1.8 local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
139     multibuild_parallel_foreach_variant _multilib_multibuild_wrapper "${@}"
140 mgorny 1.1 }
141    
142 mgorny 1.9 # @FUNCTION: multilib_for_best_abi
143     # @USAGE: <argv>...
144     # @DESCRIPTION:
145     # Runs the given command with setup for the 'best' (usually native) ABI.
146     multilib_for_best_abi() {
147     debug-print-function ${FUNCNAME} "${@}"
148    
149     local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
150    
151     multibuild_for_best_variant _multilib_multibuild_wrapper "${@}"
152     }
153    
154 mgorny 1.2 # @FUNCTION: multilib_check_headers
155     # @DESCRIPTION:
156     # Check whether the header files are consistent between ABIs.
157     #
158     # This function needs to be called after each ABI's installation phase.
159     # It obtains the header file checksums and compares them with previous
160     # runs (if any). Dies if header files differ.
161     multilib_check_headers() {
162     _multilib_header_cksum() {
163 mgorny 1.4 [[ -d ${ED}usr/include ]] && \
164 mgorny 1.2 find "${ED}"usr/include -type f \
165     -exec cksum {} + | sort -k2
166     }
167    
168     local cksum=$(_multilib_header_cksum)
169     local cksum_file=${T}/.multilib_header_cksum
170    
171     if [[ -f ${cksum_file} ]]; then
172     local cksum_prev=$(< "${cksum_file}")
173    
174     if [[ ${cksum} != ${cksum_prev} ]]; then
175     echo "${cksum}" > "${cksum_file}.new"
176    
177     eerror "Header files have changed between ABIs."
178    
179     if type -p diff &>/dev/null; then
180     eerror "$(diff -du "${cksum_file}" "${cksum_file}.new")"
181     else
182     eerror "Old checksums in: ${cksum_file}"
183     eerror "New checksums in: ${cksum_file}.new"
184     fi
185    
186     die "Header checksum mismatch, aborting."
187     fi
188     else
189     echo "${cksum}" > "${cksum_file}"
190     fi
191     }
192    
193 mgorny 1.10 # @FUNCTION: multilib_copy_sources
194     # @DESCRIPTION:
195     # Create a single copy of the package sources for each enabled ABI.
196     #
197     # The sources are always copied from initial BUILD_DIR (or S if unset)
198     # to ABI-specific build directory matching BUILD_DIR used by
199     # multilib_foreach_abi().
200     multilib_copy_sources() {
201     debug-print-function ${FUNCNAME} "${@}"
202    
203     local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) )
204     multibuild_copy_sources
205     }
206    
207 mgorny 1.11 # @ECLASS-VARIABLE: MULTILIB_WRAPPED_HEADERS
208     # @DESCRIPTION:
209     # A list of headers to wrap for multilib support. The listed headers
210     # will be moved to a non-standard location and replaced with a file
211     # including them conditionally to current ABI.
212     #
213     # This variable has to be a bash array. Paths shall be relative to
214     # installation root (${ED}), and name regular files. Recursive wrapping
215     # is not supported.
216     #
217     # Please note that header wrapping is *discouraged*. It is preferred to
218     # install all headers in a subdirectory of libdir and use pkg-config to
219     # locate the headers. Some C preprocessors will not work with wrapped
220     # headers.
221     #
222     # Example:
223     # @CODE
224     # MULTILIB_WRAPPED_HEADERS=(
225     # /usr/include/foobar/config.h
226     # )
227     # @CODE
228    
229     # @FUNCTION: multilib_prepare_wrappers
230     # @USAGE: [<install-root>]
231     # @DESCRIPTION:
232     # Perform the preparation of all kinds of wrappers for the current ABI.
233     # This function shall be called once per each ABI, after installing
234     # the files to be wrapped.
235     #
236     # Takes an optional custom <install-root> from which files will be
237     # used. If no root is specified, uses ${ED}.
238     #
239     # The files to be wrapped are specified using separate variables,
240     # e.g. MULTILIB_WRAPPED_HEADERS. Those variables shall not be changed
241     # between the successive calls to multilib_prepare_wrappers
242     # and multilib_install_wrappers.
243     #
244     # After all wrappers are prepared, multilib_install_wrappers shall
245     # be called to commit them to the installation tree.
246     multilib_prepare_wrappers() {
247     debug-print-function ${FUNCNAME} "${@}"
248    
249     [[ ${#} -le 1 ]] || die "${FUNCNAME}: too many arguments"
250    
251     local root=${1:-${ED}}
252     local f
253    
254     for f in "${MULTILIB_WRAPPED_HEADERS[@]}"; do
255     # drop leading slash if it's there
256     f=${f#/}
257    
258     if [[ ${f} != usr/include/* ]]; then
259     die "Wrapping headers outside of /usr/include is not supported at the moment."
260     fi
261     # and then usr/include
262     f=${f#usr/include}
263    
264     local dir=${f%/*}
265    
266     # $CHOST shall be set by multilib_toolchain_setup
267     dodir "/tmp/multilib-include/${CHOST}${dir}"
268     mv "${root}/usr/include${f}" "${ED}/tmp/multilib-include/${CHOST}${dir}/" || die
269    
270     if [[ ! -f ${ED}/tmp/multilib-include${f} ]]; then
271     dodir "/tmp/multilib-include${dir}"
272     # a generic template
273 mgorny 1.13 cat > "${ED}/tmp/multilib-include${f}" <<_EOF_
274 mgorny 1.11 /* This file is auto-generated by multilib-build.eclass
275     * as a multilib-friendly wrapper. For the original content,
276     * please see the files that are #included below.
277     */
278    
279     #if defined(__x86_64__) /* amd64 */
280     # if defined(__ILP32__) /* x32 ABI */
281     # error "abi_x86_x32 not supported by the package."
282     # else /* 64-bit ABI */
283     # error "abi_x86_64 not supported by the package."
284     # endif
285     #elif defined(__i386__) /* plain x86 */
286     # error "abi_x86_32 not supported by the package."
287     #else
288     # error "No ABI matched, please report a bug to bugs.gentoo.org"
289     #endif
290     _EOF_
291     fi
292    
293     # XXX: get abi_* directly
294     local abi_flag
295     case "${ABI}" in
296     amd64)
297     abi_flag=abi_x86_64;;
298     x86)
299     abi_flag=abi_x86_32;;
300     x32)
301     abi_flag=abi_x86_x32;;
302     *)
303     die "Header wrapping for ${ABI} not supported yet";;
304     esac
305    
306     # Note: match a space afterwards to avoid collision potential.
307 mgorny 1.14 sed -e "/${abi_flag} /s&error.*&include <${CHOST}${f}>&" \
308 mgorny 1.11 -i "${ED}/tmp/multilib-include${f}" || die
309     done
310     }
311    
312     # @FUNCTION: multilib_install_wrappers
313     # @USAGE: [<install-root>]
314     # @DESCRIPTION:
315     # Install the previously-prepared wrappers. This function shall
316     # be called once, after all wrappers were prepared.
317     #
318     # Takes an optional custom <install-root> to which the wrappers will be
319     # installed. If no root is specified, uses ${ED}. There is no need to
320     # use the same root as when preparing the wrappers.
321     #
322     # The files to be wrapped are specified using separate variables,
323     # e.g. MULTILIB_WRAPPED_HEADERS. Those variables shall not be changed
324     # between the calls to multilib_prepare_wrappers
325     # and multilib_install_wrappers.
326     multilib_install_wrappers() {
327     debug-print-function ${FUNCNAME} "${@}"
328    
329     [[ ${#} -le 1 ]] || die "${FUNCNAME}: too many arguments"
330    
331     local root=${1:-${ED}}
332    
333     if [[ -d "${ED}"/tmp/multilib-include ]]; then
334     multibuild_merge_root \
335     "${ED}"/tmp/multilib-include "${root}"/usr/include
336     # it can fail if something else uses /tmp
337     rmdir "${ED}"/tmp &>/dev/null
338     fi
339     }
340    
341 mgorny 1.1 _MULTILIB_BUILD=1
342     fi

  ViewVC Help
Powered by ViewVC 1.1.20