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Revision 1.2 - (hide annotations) (download)
Sun Feb 10 11:44:00 2013 UTC (22 months ago) by mgorny
Branch: MAIN
Changes since 1.1: +39 -1 lines
Move header checking function into multilib-build for wider reuse.

1 mgorny 1.1 # Copyright 1999-2013 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3 mgorny 1.2 # $Header: /var/cvsroot/gentoo-x86/eclass/multilib-build.eclass,v 1.1 2013/02/01 21:39:50 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     # EAPI=5 is required for meaningful MULTILIB_USEDEP.
21     case ${EAPI:-0} in
22     5) ;;
23     *) die "EAPI=${EAPI} is not supported" ;;
24     esac
25    
26     inherit multilib multiprocessing
27    
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     )
36    
37     # @ECLASS-VARIABLE: MULTILIB_USEDEP
38     # @DESCRIPTION:
39     # The USE-dependency to be used on dependencies (libraries) needing
40     # to support multilib as well.
41     #
42     # Example use:
43     # @CODE
44     # RDEPEND="dev-libs/libfoo[${MULTILIB_USEDEP}]
45     # net-libs/libbar[ssl,${MULTILIB_USEDEP}]"
46     # @CODE
47    
48     _multilib_build_set_globals() {
49     local flags=( "${_MULTILIB_FLAGS[@]%:*}" )
50     local usedeps=${flags[@]/%/(-)?}
51    
52     IUSE=${flags[*]}
53     MULTILIB_USEDEP=${usedeps// /,}
54     }
55     _multilib_build_set_globals
56    
57     # @FUNCTION: multilib_get_enabled_abis
58     # @DESCRIPTION:
59     # Return the ordered list of enabled ABIs if multilib builds
60     # are enabled. The best (most preferred) ABI will come last.
61     #
62     # If multilib is disabled, the default ABI will be returned
63     # in order to enforce consistent testing with multilib code.
64     multilib_get_enabled_abis() {
65     debug-print-function ${FUNCNAME} "${@}"
66    
67     local abis=( $(get_all_abis) )
68    
69     local abi i found
70     for abi in "${abis[@]}"; do
71     for i in "${_MULTILIB_FLAGS[@]}"; do
72     local m_abi=${i#*:}
73     local m_flag=${i%:*}
74    
75     if [[ ${m_abi} == ${abi} ]] && use "${m_flag}"; then
76     echo "${abi}"
77     found=1
78     fi
79     done
80     done
81    
82     if [[ ! ${found} ]]; then
83     debug-print "${FUNCNAME}: no ABIs enabled, fallback to ${DEFAULT_ABI}"
84     echo ${DEFAULT_ABI}
85     fi
86     }
87    
88     # @FUNCTION: multilib_foreach_abi
89     # @USAGE: <argv>...
90     # @DESCRIPTION:
91     # If multilib support is enabled, sets the toolchain up for each
92     # supported ABI along with the ABI variable and correct BUILD_DIR,
93     # and runs the given commands with them.
94     #
95     # If multilib support is disabled, it just runs the commands. No setup
96     # is done.
97     multilib_foreach_abi() {
98     local initial_dir=${BUILD_DIR:-${S}}
99    
100     local ABI
101     for ABI in $(multilib_get_enabled_abis); do
102     multilib_toolchain_setup "${ABI}"
103     BUILD_DIR=${initial_dir%%/}-${ABI} "${@}"
104     done
105     }
106    
107     # @FUNCTION: multilib_parallel_foreach_abi
108     # @USAGE: <argv>...
109     # @DESCRIPTION:
110     # If multilib support is enabled, sets the toolchain up for each
111     # supported ABI along with the ABI variable and correct BUILD_DIR,
112     # and runs the given commands with them. The commands are run
113     # in parallel with number of jobs being determined from MAKEOPTS.
114     #
115     # If multilib support is disabled, it just runs the commands. No setup
116     # is done.
117     #
118     # Useful for running configure scripts.
119     multilib_parallel_foreach_abi() {
120     local initial_dir=${BUILD_DIR:-${S}}
121    
122     multijob_init
123    
124     local ABI
125     for ABI in $(multilib_get_enabled_abis); do
126     (
127     multijob_child_init
128    
129     multilib_toolchain_setup "${ABI}"
130     BUILD_DIR=${initial_dir%%/}-${ABI}
131     "${@}"
132     ) &
133    
134     multijob_post_fork
135     done
136    
137     multijob_finish
138     }
139    
140 mgorny 1.2 # @FUNCTION: multilib_check_headers
141     # @DESCRIPTION:
142     # Check whether the header files are consistent between ABIs.
143     #
144     # This function needs to be called after each ABI's installation phase.
145     # It obtains the header file checksums and compares them with previous
146     # runs (if any). Dies if header files differ.
147     multilib_check_headers() {
148     _multilib_header_cksum() {
149     find "${ED}"usr/include -type f \
150     -exec cksum {} + | sort -k2
151     }
152    
153     local cksum=$(_multilib_header_cksum)
154     local cksum_file=${T}/.multilib_header_cksum
155    
156     if [[ -f ${cksum_file} ]]; then
157     local cksum_prev=$(< "${cksum_file}")
158    
159     if [[ ${cksum} != ${cksum_prev} ]]; then
160     echo "${cksum}" > "${cksum_file}.new"
161    
162     eerror "Header files have changed between ABIs."
163    
164     if type -p diff &>/dev/null; then
165     eerror "$(diff -du "${cksum_file}" "${cksum_file}.new")"
166     else
167     eerror "Old checksums in: ${cksum_file}"
168     eerror "New checksums in: ${cksum_file}.new"
169     fi
170    
171     die "Header checksum mismatch, aborting."
172     fi
173     else
174     echo "${cksum}" > "${cksum_file}"
175     fi
176     }
177    
178 mgorny 1.1 _MULTILIB_BUILD=1
179     fi

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