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# Copyright 1999-2014 Gentoo Foundation |
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# Distributed under the terms of the GNU General Public License v2 |
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# $Header: /var/cvsroot/gentoo-x86/eclass/multilib-build.eclass,v 1.34 2014/04/03 22:09:36 mgorny Exp $ |
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|
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# @ECLASS: multilib-build.eclass |
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# @MAINTAINER: |
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# gx86-multilib team <multilib@gentoo.org> |
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# @AUTHOR: |
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# Author: Michał Górny <mgorny@gentoo.org> |
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# @BLURB: flags and utility functions for building multilib packages |
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# @DESCRIPTION: |
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# The multilib-build.eclass exports USE flags and utility functions |
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# necessary to build packages for multilib in a clean and uniform |
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# manner. |
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# |
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# Please note that dependency specifications for multilib-capable |
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# dependencies shall use the USE dependency string in ${MULTILIB_USEDEP} |
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# to properly request multilib enabled. |
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|
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if [[ ! ${_MULTILIB_BUILD} ]]; then |
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|
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# EAPI=4 is required for meaningful MULTILIB_USEDEP. |
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case ${EAPI:-0} in |
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4|5) ;; |
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*) die "EAPI=${EAPI} is not supported" ;; |
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esac |
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|
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inherit multibuild multilib |
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|
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# @ECLASS-VARIABLE: _MULTILIB_FLAGS |
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# @INTERNAL |
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# @DESCRIPTION: |
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# The list of multilib flags and corresponding ABI values. If the same |
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# flag is reused for multiple ABIs (e.g. x86 on Linux&FreeBSD), multiple |
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# ABIs may be separated by commas. |
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# |
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# Please contact multilib before modifying this list. This way we can |
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# ensure that every *preliminary* work is done and the multilib can be |
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# extended safely. |
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_MULTILIB_FLAGS=( |
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abi_x86_32:x86,x86_fbsd |
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abi_x86_64:amd64,amd64_fbsd |
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abi_x86_x32:x32 |
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abi_mips_n32:n32 |
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abi_mips_n64:n64 |
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abi_mips_o32:o32 |
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) |
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|
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# @ECLASS-VARIABLE: MULTILIB_USEDEP |
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# @DESCRIPTION: |
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# The USE-dependency to be used on dependencies (libraries) needing |
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# to support multilib as well. |
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# |
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# Example use: |
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# @CODE |
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# RDEPEND="dev-libs/libfoo[${MULTILIB_USEDEP}] |
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# net-libs/libbar[ssl,${MULTILIB_USEDEP}]" |
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# @CODE |
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|
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_multilib_build_set_globals() { |
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local flags=( "${_MULTILIB_FLAGS[@]%:*}" ) |
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local usedeps=${flags[@]/%/(-)?} |
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|
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IUSE=${flags[*]} |
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MULTILIB_USEDEP=${usedeps// /,} |
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} |
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_multilib_build_set_globals |
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|
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# @FUNCTION: multilib_get_enabled_abis |
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# @DESCRIPTION: |
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# Return the ordered list of enabled ABIs if multilib builds |
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# are enabled. The best (most preferred) ABI will come last. |
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# |
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# If multilib is disabled, the default ABI will be returned |
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# in order to enforce consistent testing with multilib code. |
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multilib_get_enabled_abis() { |
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debug-print-function ${FUNCNAME} "${@}" |
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|
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local abis=( $(get_all_abis) ) |
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|
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local abi i found |
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for abi in "${abis[@]}"; do |
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for i in "${_MULTILIB_FLAGS[@]}"; do |
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local m_abis=${i#*:} m_abi |
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local m_flag=${i%:*} |
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|
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# split on ,; we can't switch IFS for function scope because |
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# paludis is broken (bug #486592), and switching it locally |
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# for the split is more complex than cheating like this |
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for m_abi in ${m_abis//,/ }; do |
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if [[ ${m_abi} == ${abi} ]] && use "${m_flag}"; then |
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echo "${abi}" |
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found=1 |
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break 2 |
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fi |
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done |
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done |
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done |
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|
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if [[ ! ${found} ]]; then |
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# ${ABI} can be used to override the fallback (multilib-portage), |
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# ${DEFAULT_ABI} is the safe fallback. |
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local abi=${ABI:-${DEFAULT_ABI}} |
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|
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debug-print "${FUNCNAME}: no ABIs enabled, fallback to ${abi}" |
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debug-print "${FUNCNAME}: ABI=${ABI}, DEFAULT_ABI=${DEFAULT_ABI}" |
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echo ${abi} |
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fi |
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} |
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|
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# @FUNCTION: _multilib_multibuild_wrapper |
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# @USAGE: <argv>... |
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# @INTERNAL |
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# @DESCRIPTION: |
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# Initialize the environment for ABI selected for multibuild. |
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_multilib_multibuild_wrapper() { |
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debug-print-function ${FUNCNAME} "${@}" |
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|
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local ABI=${MULTIBUILD_VARIANT} |
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multilib_toolchain_setup "${ABI}" |
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"${@}" |
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} |
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|
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# @FUNCTION: multilib_foreach_abi |
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# @USAGE: <argv>... |
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# @DESCRIPTION: |
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# If multilib support is enabled, sets the toolchain up for each |
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# supported ABI along with the ABI variable and correct BUILD_DIR, |
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# and runs the given commands with them. |
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# |
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# If multilib support is disabled, it just runs the commands. No setup |
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# is done. |
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multilib_foreach_abi() { |
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debug-print-function ${FUNCNAME} "${@}" |
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|
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local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) ) |
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multibuild_foreach_variant _multilib_multibuild_wrapper "${@}" |
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} |
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|
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# @FUNCTION: multilib_parallel_foreach_abi |
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# @USAGE: <argv>... |
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# @DESCRIPTION: |
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# If multilib support is enabled, sets the toolchain up for each |
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# supported ABI along with the ABI variable and correct BUILD_DIR, |
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# and runs the given commands with them. The commands are run |
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# in parallel with number of jobs being determined from MAKEOPTS. |
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# |
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# If multilib support is disabled, it just runs the commands. No setup |
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# is done. |
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# |
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# Useful for running configure scripts. |
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multilib_parallel_foreach_abi() { |
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debug-print-function ${FUNCNAME} "${@}" |
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|
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local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) ) |
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multibuild_parallel_foreach_variant _multilib_multibuild_wrapper "${@}" |
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} |
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|
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# @FUNCTION: multilib_for_best_abi |
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# @USAGE: <argv>... |
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# @DESCRIPTION: |
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# Runs the given command with setup for the 'best' (usually native) ABI. |
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multilib_for_best_abi() { |
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debug-print-function ${FUNCNAME} "${@}" |
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|
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local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) ) |
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|
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multibuild_for_best_variant _multilib_multibuild_wrapper "${@}" |
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} |
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|
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# @FUNCTION: multilib_check_headers |
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# @DESCRIPTION: |
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# Check whether the header files are consistent between ABIs. |
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# |
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# This function needs to be called after each ABI's installation phase. |
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# It obtains the header file checksums and compares them with previous |
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# runs (if any). Dies if header files differ. |
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multilib_check_headers() { |
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_multilib_header_cksum() { |
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[[ -d ${ED}usr/include ]] && \ |
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find "${ED}"usr/include -type f \ |
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-exec cksum {} + | sort -k2 |
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} |
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|
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local cksum=$(_multilib_header_cksum) |
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local cksum_file=${T}/.multilib_header_cksum |
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|
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if [[ -f ${cksum_file} ]]; then |
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local cksum_prev=$(< "${cksum_file}") |
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|
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if [[ ${cksum} != ${cksum_prev} ]]; then |
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echo "${cksum}" > "${cksum_file}.new" |
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|
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eerror "Header files have changed between ABIs." |
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|
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if type -p diff &>/dev/null; then |
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eerror "$(diff -du "${cksum_file}" "${cksum_file}.new")" |
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else |
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eerror "Old checksums in: ${cksum_file}" |
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eerror "New checksums in: ${cksum_file}.new" |
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fi |
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|
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die "Header checksum mismatch, aborting." |
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fi |
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else |
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echo "${cksum}" > "${cksum_file}" |
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fi |
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} |
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|
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# @FUNCTION: multilib_copy_sources |
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# @DESCRIPTION: |
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# Create a single copy of the package sources for each enabled ABI. |
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# |
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# The sources are always copied from initial BUILD_DIR (or S if unset) |
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# to ABI-specific build directory matching BUILD_DIR used by |
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# multilib_foreach_abi(). |
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multilib_copy_sources() { |
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debug-print-function ${FUNCNAME} "${@}" |
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|
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local MULTIBUILD_VARIANTS=( $(multilib_get_enabled_abis) ) |
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multibuild_copy_sources |
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} |
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|
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# @ECLASS-VARIABLE: MULTILIB_WRAPPED_HEADERS |
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# @DESCRIPTION: |
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# A list of headers to wrap for multilib support. The listed headers |
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# will be moved to a non-standard location and replaced with a file |
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# including them conditionally to current ABI. |
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# |
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# This variable has to be a bash array. Paths shall be relative to |
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# installation root (${ED}), and name regular files. Recursive wrapping |
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# is not supported. |
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# |
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# Please note that header wrapping is *discouraged*. It is preferred to |
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# install all headers in a subdirectory of libdir and use pkg-config to |
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# locate the headers. Some C preprocessors will not work with wrapped |
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# headers. |
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# |
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# Example: |
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# @CODE |
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# MULTILIB_WRAPPED_HEADERS=( |
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# /usr/include/foobar/config.h |
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# ) |
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# @CODE |
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|
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# @ECLASS-VARIABLE: MULTILIB_CHOST_TOOLS |
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# @DESCRIPTION: |
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# A list of tool executables to preserve for each multilib ABI. |
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# The listed executables will be renamed to ${CHOST}-${basename}, |
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# and the native variant will be symlinked to the generic name. |
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# |
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# This variable has to be a bash array. Paths shall be relative to |
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# installation root (${ED}), and name regular files or symbolic |
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# links to regular files. Recursive wrapping is not supported. |
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# |
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# If symbolic link is passed, both symlink path and symlink target |
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# will be changed. As a result, the symlink target is expected |
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# to be wrapped as well (either by listing in MULTILIB_CHOST_TOOLS |
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# or externally). |
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# |
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# Please note that tool wrapping is *discouraged*. It is preferred to |
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# install pkg-config files for each ABI, and require reverse |
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# dependencies to use that. |
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# |
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# Packages that search for tools properly (e.g. using AC_PATH_TOOL |
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# macro) will find the wrapper executables automatically. Other packages |
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# will need explicit override of tool paths. |
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# |
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# Example: |
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# @CODE |
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# MULTILIB_CHOST_TOOLS=( |
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# /usr/bin/foo-config |
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# ) |
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|
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# @CODE |
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# @FUNCTION: multilib_prepare_wrappers |
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# @USAGE: [<install-root>] |
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# @DESCRIPTION: |
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# Perform the preparation of all kinds of wrappers for the current ABI. |
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# This function shall be called once per each ABI, after installing |
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# the files to be wrapped. |
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# |
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# Takes an optional custom <install-root> from which files will be |
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# used. If no root is specified, uses ${ED}. |
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# |
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# The files to be wrapped are specified using separate variables, |
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# e.g. MULTILIB_WRAPPED_HEADERS. Those variables shall not be changed |
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# between the successive calls to multilib_prepare_wrappers |
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# and multilib_install_wrappers. |
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# |
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# After all wrappers are prepared, multilib_install_wrappers shall |
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# be called to commit them to the installation tree. |
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multilib_prepare_wrappers() { |
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debug-print-function ${FUNCNAME} "${@}" |
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|
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[[ ${#} -le 1 ]] || die "${FUNCNAME}: too many arguments" |
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|
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local root=${1:-${ED}} |
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local f |
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|
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for f in "${MULTILIB_WRAPPED_HEADERS[@]}"; do |
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# drop leading slash if it's there |
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f=${f#/} |
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|
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if [[ ${f} != usr/include/* ]]; then |
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die "Wrapping headers outside of /usr/include is not supported at the moment." |
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fi |
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# and then usr/include |
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f=${f#usr/include} |
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|
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local dir=${f%/*} |
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|
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if [[ ! -f ${ED}/tmp/multilib-include${f} ]]; then |
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dodir "/tmp/multilib-include${dir}" |
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# a generic template |
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cat > "${ED}/tmp/multilib-include${f}" <<_EOF_ |
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/* This file is auto-generated by multilib-build.eclass |
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* as a multilib-friendly wrapper. For the original content, |
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* please see the files that are #included below. |
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*/ |
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|
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#if defined(__x86_64__) /* amd64 */ |
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# if defined(__ILP32__) /* x32 ABI */ |
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# error "abi_x86_x32 not supported by the package." |
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# else /* 64-bit ABI */ |
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# error "abi_x86_64 not supported by the package." |
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# endif |
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#elif defined(__i386__) /* plain x86 */ |
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# error "abi_x86_32 not supported by the package." |
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#elif defined(__mips__) |
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# if(_MIPS_SIM == _ABIN32) /* n32 */ |
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# error "abi_mips_n32 not supported by the package." |
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# elif(_MIPS_SIM == _ABI64) /* n64 */ |
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# error "abi_mips_n64 not supported by the package." |
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# elif(_MIPS_SIM == _ABIO32) /* o32 */ |
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# error "abi_mips_o32 not supported by the package." |
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# endif |
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#else |
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# error "No ABI matched, please report a bug to bugs.gentoo.org" |
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#endif |
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_EOF_ |
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fi |
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|
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# Some ABIs may have install less files than others. |
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if [[ -f ${root}/usr/include${f} ]]; then |
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# $CHOST shall be set by multilib_toolchain_setup |
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dodir "/tmp/multilib-include/${CHOST}${dir}" |
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mv "${root}/usr/include${f}" "${ED}/tmp/multilib-include/${CHOST}${dir}/" || die |
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|
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# XXX: get abi_* directly |
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local abi_flag |
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case "${ABI}" in |
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amd64|amd64_fbsd) |
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abi_flag=abi_x86_64;; |
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x86|x86_fbsd) |
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abi_flag=abi_x86_32;; |
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x32) |
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abi_flag=abi_x86_x32;; |
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n32) |
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abi_flag=abi_mips_n32;; |
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n64) |
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abi_flag=abi_mips_n64;; |
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o32) |
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abi_flag=abi_mips_o32;; |
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*) |
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die "Header wrapping for ${ABI} not supported yet";; |
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esac |
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|
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# Note: match a space afterwards to avoid collision potential. |
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sed -e "/${abi_flag} /s&error.*&include <${CHOST}${f}>&" \ |
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-i "${ED}/tmp/multilib-include${f}" || die |
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fi |
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done |
| 374 |
|
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for f in "${MULTILIB_CHOST_TOOLS[@]}"; do |
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# drop leading slash if it's there |
| 377 |
f=${f#/} |
| 378 |
|
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local dir=${f%/*} |
| 380 |
local fn=${f##*/} |
| 381 |
|
| 382 |
if [[ -L ${root}/${f} ]]; then |
| 383 |
# rewrite the symlink target |
| 384 |
local target=$(readlink "${root}/${f}") |
| 385 |
local target_dir |
| 386 |
local target_fn=${target##*/} |
| 387 |
|
| 388 |
[[ ${target} == */* ]] && target_dir=${target%/*} |
| 389 |
|
| 390 |
ln -f -s "${target_dir+${target_dir}/}${CHOST}-${target_fn}" \ |
| 391 |
"${root}/${f}" || die |
| 392 |
fi |
| 393 |
|
| 394 |
mv "${root}/${f}" "${root}/${dir}/${CHOST}-${fn}" || die |
| 395 |
|
| 396 |
# symlink the native one back |
| 397 |
if multilib_build_binaries; then |
| 398 |
ln -s "${CHOST}-${fn}" "${root}/${f}" || die |
| 399 |
fi |
| 400 |
done |
| 401 |
} |
| 402 |
|
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# @FUNCTION: multilib_install_wrappers |
| 404 |
# @USAGE: [<install-root>] |
| 405 |
# @DESCRIPTION: |
| 406 |
# Install the previously-prepared wrappers. This function shall |
| 407 |
# be called once, after all wrappers were prepared. |
| 408 |
# |
| 409 |
# Takes an optional custom <install-root> to which the wrappers will be |
| 410 |
# installed. If no root is specified, uses ${ED}. There is no need to |
| 411 |
# use the same root as when preparing the wrappers. |
| 412 |
# |
| 413 |
# The files to be wrapped are specified using separate variables, |
| 414 |
# e.g. MULTILIB_WRAPPED_HEADERS. Those variables shall not be changed |
| 415 |
# between the calls to multilib_prepare_wrappers |
| 416 |
# and multilib_install_wrappers. |
| 417 |
multilib_install_wrappers() { |
| 418 |
debug-print-function ${FUNCNAME} "${@}" |
| 419 |
|
| 420 |
[[ ${#} -le 1 ]] || die "${FUNCNAME}: too many arguments" |
| 421 |
|
| 422 |
local root=${1:-${ED}} |
| 423 |
|
| 424 |
if [[ -d "${ED}"/tmp/multilib-include ]]; then |
| 425 |
multibuild_merge_root \ |
| 426 |
"${ED}"/tmp/multilib-include "${root}"/usr/include |
| 427 |
# it can fail if something else uses /tmp |
| 428 |
rmdir "${ED}"/tmp &>/dev/null |
| 429 |
fi |
| 430 |
} |
| 431 |
|
| 432 |
# @FUNCTION: multilib_is_native_abi |
| 433 |
# @DESCRIPTION: |
| 434 |
# Determine whether the currently built ABI is the profile native. |
| 435 |
# Return true status (0) if that is true, otherwise false (1). |
| 436 |
# |
| 437 |
# This function is not intended to be used directly. Please use |
| 438 |
# multilib_build_binaries instead. |
| 439 |
multilib_is_native_abi() { |
| 440 |
debug-print-function ${FUNCNAME} "${@}" |
| 441 |
|
| 442 |
[[ ${#} -eq 0 ]] || die "${FUNCNAME}: too many arguments" |
| 443 |
|
| 444 |
[[ ${ABI} == ${DEFAULT_ABI} ]] |
| 445 |
} |
| 446 |
|
| 447 |
# @FUNCTION: multilib_build_binaries |
| 448 |
# @DESCRIPTION: |
| 449 |
# Determine whether to build binaries for the currently built ABI. |
| 450 |
# Returns true status (0) if the currently built ABI is the profile |
| 451 |
# native or COMPLETE_MULTILIB variable is set to 'yes', otherwise |
| 452 |
# false (1). |
| 453 |
# |
| 454 |
# This is often useful for configure calls when some of the options are |
| 455 |
# supposed to be disabled for multilib ABIs (like those used for |
| 456 |
# executables only). |
| 457 |
multilib_build_binaries() { |
| 458 |
debug-print-function ${FUNCNAME} "${@}" |
| 459 |
|
| 460 |
[[ ${#} -eq 0 ]] || die "${FUNCNAME}: too many arguments" |
| 461 |
|
| 462 |
[[ ${COMPLETE_MULTILIB} == yes ]] || multilib_is_native_abi |
| 463 |
} |
| 464 |
|
| 465 |
# @FUNCTION: multilib_native_use_with |
| 466 |
# @USAGE: <flag> [<opt-name> [<opt-value>]] |
| 467 |
# @DESCRIPTION: |
| 468 |
# Output --with configure option alike use_with if USE <flag> is enabled |
| 469 |
# and executables are being built (multilib_build_binaries is true). |
| 470 |
# Otherwise, outputs --without configure option. Arguments are the same |
| 471 |
# as for use_with in the EAPI. |
| 472 |
multilib_native_use_with() { |
| 473 |
if multilib_build_binaries; then |
| 474 |
use_with "${@}" |
| 475 |
else |
| 476 |
echo "--without-${2:-${1}}" |
| 477 |
fi |
| 478 |
} |
| 479 |
|
| 480 |
# @FUNCTION: multilib_native_use_enable |
| 481 |
# @USAGE: <flag> [<opt-name> [<opt-value>]] |
| 482 |
# @DESCRIPTION: |
| 483 |
# Output --enable configure option alike use_with if USE <flag> |
| 484 |
# is enabled and executables are being built (multilib_build_binaries |
| 485 |
# is true). Otherwise, outputs --disable configure option. Arguments are |
| 486 |
# the same as for use_enable in the EAPI. |
| 487 |
multilib_native_use_enable() { |
| 488 |
if multilib_build_binaries; then |
| 489 |
use_enable "${@}" |
| 490 |
else |
| 491 |
echo "--disable-${2:-${1}}" |
| 492 |
fi |
| 493 |
} |
| 494 |
|
| 495 |
# @FUNCTION: multilib_native_usex |
| 496 |
# @USAGE: <flag> [<true1> [<false1> [<true2> [<false2>]]]] |
| 497 |
# @DESCRIPTION: |
| 498 |
# Output the concatenation of <true1> (or 'yes' if unspecified) |
| 499 |
# and <true2> if USE <flag> is enabled and executables are being built |
| 500 |
# (multilib_build_binaries is true). Otherwise, output the concatenation |
| 501 |
# of <false1> (or 'no' if unspecified) and <false2>. Arguments |
| 502 |
# are the same as for usex in the EAPI. |
| 503 |
# |
| 504 |
# Note: in EAPI 4 you need to inherit eutils to use this function. |
| 505 |
multilib_native_usex() { |
| 506 |
if multilib_build_binaries; then |
| 507 |
usex "${@}" |
| 508 |
else |
| 509 |
echo "${3-no}${5}" |
| 510 |
fi |
| 511 |
} |
| 512 |
|
| 513 |
_MULTILIB_BUILD=1 |
| 514 |
fi |
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