gentoo-x86/eclass/multilib-build.eclass

# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/autotools-multilib.eclass,v 1.7 2013/01/26 11:39:41 mgorny Exp $

# @ECLASS: multilib-build.eclass
# @MAINTAINER:
# Michał Górny <mgorny@gentoo.org>
# @BLURB: flags and utility functions for building multilib packages
# @DESCRIPTION:
# The multilib-build.eclass exports USE flags and utility functions
# necessary to build packages for multilib in a clean and uniform
# manner.
#
# Please note that dependency specifications for multilib-capable
# dependencies shall use the USE dependency string in ${MULTILIB_USEDEP}
# to properly request multilib enabled.

if [[ ! ${_MULTILIB_BUILD} ]]; then

# EAPI=5 is required for meaningful MULTILIB_USEDEP.
case ${EAPI:-0} in
        5) ;;
        *) die "EAPI=${EAPI} is not supported" ;;
esac

inherit multilib multiprocessing

# @ECLASS-VARIABLE: _MULTILIB_FLAGS
# @INTERNAL
# @DESCRIPTION:
# The list of multilib flags and corresponding ABI values.
_MULTILIB_FLAGS=(
        abi_x86_32:x86
        abi_x86_64:amd64
)

# @ECLASS-VARIABLE: MULTILIB_USEDEP
# @DESCRIPTION:
# The USE-dependency to be used on dependencies (libraries) needing
# to support multilib as well.
#
# Example use:
# @CODE
# RDEPEND="dev-libs/libfoo[${MULTILIB_USEDEP}]
#       net-libs/libbar[ssl,${MULTILIB_USEDEP}]"
# @CODE

_multilib_build_set_globals() {
        local flags=( "${_MULTILIB_FLAGS[@]%:*}" )
        local usedeps=${flags[@]/%/(-)?}

        IUSE=${flags[*]}
        MULTILIB_USEDEP=${usedeps// /,}
}
_multilib_build_set_globals

# @FUNCTION: multilib_get_enabled_abis
# @DESCRIPTION:
# Return the ordered list of enabled ABIs if multilib builds
# are enabled. The best (most preferred) ABI will come last.
#
# If multilib is disabled, the default ABI will be returned
# in order to enforce consistent testing with multilib code.
multilib_get_enabled_abis() {
        debug-print-function ${FUNCNAME} "${@}"

        local abis=( $(get_all_abis) )

        local abi i found
        for abi in "${abis[@]}"; do
                for i in "${_MULTILIB_FLAGS[@]}"; do
                        local m_abi=${i#*:}
                        local m_flag=${i%:*}

                        if [[ ${m_abi} == ${abi} ]] && use "${m_flag}"; then
                                echo "${abi}"
                                found=1
                        fi
                done
        done

        if [[ ! ${found} ]]; then
                debug-print "${FUNCNAME}: no ABIs enabled, fallback to ${DEFAULT_ABI}"
                echo ${DEFAULT_ABI}
        fi
}

# @FUNCTION: multilib_foreach_abi
# @USAGE: <argv>...
# @DESCRIPTION:
# If multilib support is enabled, sets the toolchain up for each
# supported ABI along with the ABI variable and correct BUILD_DIR,
# and runs the given commands with them.
#
# If multilib support is disabled, it just runs the commands. No setup
# is done.
multilib_foreach_abi() {
        local initial_dir=${BUILD_DIR:-${S}}

        local ABI
        for ABI in $(multilib_get_enabled_abis); do
                multilib_toolchain_setup "${ABI}"
                BUILD_DIR=${initial_dir%%/}-${ABI} "${@}"
        done
}

# @FUNCTION: multilib_parallel_foreach_abi
# @USAGE: <argv>...
# @DESCRIPTION:
# If multilib support is enabled, sets the toolchain up for each
# supported ABI along with the ABI variable and correct BUILD_DIR,
# and runs the given commands with them. The commands are run
# in parallel with number of jobs being determined from MAKEOPTS.
#
# If multilib support is disabled, it just runs the commands. No setup
# is done.
#
# Useful for running configure scripts.
multilib_parallel_foreach_abi() {
        local initial_dir=${BUILD_DIR:-${S}}

        multijob_init

        local ABI
        for ABI in $(multilib_get_enabled_abis); do
                (
                        multijob_child_init

                        multilib_toolchain_setup "${ABI}"
                        BUILD_DIR=${initial_dir%%/}-${ABI}
                        "${@}"
                ) &

                multijob_post_fork
        done

        multijob_finish
}

_MULTILIB_BUILD=1
fi
1	# Copyright 1999-2013 Gentoo Foundation
2	# Distributed under the terms of the GNU General Public License v2
3	# $Header: /var/cvsroot/gentoo-x86/eclass/autotools-multilib.eclass,v 1.7 2013/01/26 11:39:41 mgorny Exp $
4
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	_MULTILIB_BUILD=1
141	fi