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# 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 1.14 2013/04/01 11:05:27 mgorny Exp $
# @ECLASS: autotools-multilib.eclass
# @MAINTAINER:
# Michał Górny <mgorny@gentoo.org>
# @BLURB: autotools-utils wrapper for multilib builds
# @DESCRIPTION:
# The autotools-multilib.eclass is an autotools-utils.eclass(5) wrapper
# introducing support for building for more than one ABI (multilib).
#
# Inheriting this eclass sets the USE flags and exports autotools-utils
# phase function wrappers which build the package for each supported ABI
# when the relevant flag is enabled. Other than that, it works like
# regular autotools-utils.
#
# Note that the multilib support requires out-of-source builds to be
# enabled. Thus, it is impossible to use AUTOTOOLS_IN_SOURCE_BUILD with
# it.
# EAPI=5 is required for meaningful MULTILIB_USEDEP.
case ${EAPI:-0} in
5) ;;
*) die "EAPI=${EAPI} is not supported" ;;
esac
if [[ ${AUTOTOOLS_IN_SOURCE_BUILD} ]]; then
die "${ECLASS}: multilib support requires out-of-source builds."
fi
inherit autotools-utils multilib-build
EXPORT_FUNCTIONS src_prepare src_configure src_compile src_test src_install
# @ECLASS-VARIABLE: MULTILIB_WRAPPED_HEADERS
# @DESCRIPTION:
# A list of headers to wrap for multilib support. The listed headers
# will be moved to a non-standard location and replace with a file
# including them conditionally to current ABI.
#
# This variable has to be a bash array. Paths shall be relative to
# installation root (${ED}), and name regular files. Recursive wrapping
# is not supported.
#
# Please note that header wrapping is *discouraged*. It is preferred to
# install all headers in a subdirectory of libdir and use pkg-config to
# locate the headers. Some C preprocessors will not work with wrapped
# headers.
#
# Example:
# @CODE
# MULTILIB_WRAPPED_HEADERS=(
# /usr/include/foobar/config.h
# )
# @CODE
autotools-multilib_src_prepare() {
autotools-utils_src_prepare "${@}"
}
autotools-multilib_src_configure() {
multilib_parallel_foreach_abi autotools-utils_src_configure "${@}"
}
autotools-multilib_src_compile() {
multilib_foreach_abi autotools-utils_src_compile "${@}"
}
autotools-multilib_src_test() {
multilib_foreach_abi autotools-utils_src_test "${@}"
}
_autotools-multilib_wrap_headers() {
debug-print-function ${FUNCNAME} "$@"
local f
for f in "${MULTILIB_WRAPPED_HEADERS[@]}"; do
# drop leading slash if it's there
f=${f#/}
if [[ ${f} != usr/include/* ]]; then
die "Wrapping headers outside of /usr/include is not supported at the moment."
fi
# and then usr/include
f=${f#usr/include}
local dir=${f%/*}
# $CHOST shall be set by multilib_toolchain_setup
dodir "/tmp/multilib-include/${CHOST}${dir}"
mv "${ED}/usr/include${f}" "${ED}/tmp/multilib-include/${CHOST}${dir}/" || die
if [[ ! -f ${ED}/tmp/multilib-include${f} ]]; then
dodir "/tmp/multilib-include${dir}"
# a generic template
cat > "${ED}/tmp/multilib-include${f}" <<_EOF_ || die
/* This file is auto-generated by autotools-multilib.eclass
* as a multilib-friendly wrapper. For the original content,
* please see the files that are #included below.
*/
#if defined(__x86_64__) /* amd64 */
# if defined(__ILP32__) /* x32 ABI */
# error "abi_x86_x32 not supported by the package."
# else /* 64-bit ABI */
# error "abi_x86_64 not supported by the package."
# endif
#elif defined(__i386__) /* plain x86 */
# error "abi_x86_32 not supported by the package."
#else
# error "No ABI matched, please report a bug to bugs.gentoo.org"
#endif
_EOF_
fi
# XXX: get abi_* directly
local abi_flag
case "${ABI}" in
amd64)
abi_flag=abi_x86_64;;
x86)
abi_flag=abi_x86_32;;
x32)
abi_flag=abi_x86_x32;;
*)
die "Header wrapping for ${ABI} not supported yet";;
esac
# Note: match a space afterwards to avoid collision potential.
sed -e "/${abi_flag} /s&error.*&include <${CHOST}/${f}>&" \
-i "${ED}/tmp/multilib-include${f}" || die
done
}
autotools-multilib_src_install() {
autotools-multilib_secure_install() {
autotools-utils_src_install "${@}"
_autotools-multilib_wrap_headers
# Make sure all headers are the same for each ABI.
multilib_check_headers
}
multilib_foreach_abi autotools-multilib_secure_install "${@}"
# merge the wrapped headers
if [[ -d "${ED}"/tmp/multilib-include ]]; then
multibuild_merge_root \
"${ED}"/tmp/multilib-include "${ED}"/usr/include
# it can fail if something else uses /tmp
rmdir "${ED}"/tmp &>/dev/null
fi
}
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