[gentoo-commits] proj/riscv:master commit in: eclass/

["Andreas K. Hüttel" <dilfridge@gentoo.org>]

commit:     52d3837d7233aadb8f1c79ed9bc17c38a27e5388
Author:     Andreas K. Hüttel <dilfridge <AT> gentoo <DOT> org>
AuthorDate: Wed Sep  2 19:36:05 2020 +0000
Commit:     Andreas K. Hüttel <dilfridge <AT> gentoo <DOT> org>
CommitDate: Wed Sep  2 19:36:05 2020 +0000
URL:        https://gitweb.gentoo.org/proj/riscv.git/commit/?id=52d3837d

multilib.eclass: Copy from main tree

Signed-off-by: Andreas K. Hüttel <dilfridge <AT> gentoo.org>

 eclass/multilib.eclass | 530 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 530 insertions(+)

diff --git a/eclass/multilib.eclass b/eclass/multilib.eclass
new file mode 100644
index 0000000..342d21a
--- /dev/null
+++ b/eclass/multilib.eclass
@@ -0,0 +1,530 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: multilib.eclass
+# @MAINTAINER:
+# amd64@gentoo.org
+# toolchain@gentoo.org
+# @BLURB: This eclass is for all functions pertaining to handling multilib configurations.
+# @DESCRIPTION:
+# This eclass is for all functions pertaining to handling multilib configurations.
+
+if [[ -z ${_MULTILIB_ECLASS} ]]; then
+_MULTILIB_ECLASS=1
+
+inherit toolchain-funcs
+
+# Defaults:
+export MULTILIB_ABIS=${MULTILIB_ABIS:-"default"}
+export DEFAULT_ABI=${DEFAULT_ABI:-"default"}
+export CFLAGS_default
+export LDFLAGS_default
+export CHOST_default=${CHOST_default:-${CHOST}}
+export CTARGET_default=${CTARGET_default:-${CTARGET:-${CHOST_default}}}
+export LIBDIR_default=${CONF_LIBDIR:-"lib"}
+export KERNEL_ABI=${KERNEL_ABI:-${DEFAULT_ABI}}
+
+# @FUNCTION: has_multilib_profile
+# @DESCRIPTION:
+# Return true if the current profile is a multilib profile and lists more than
+# one abi in ${MULTILIB_ABIS}.  When has_multilib_profile returns true, that
+# profile should enable the 'multilib' use flag. This is so you can DEPEND on
+# a package only for multilib or not multilib.
+has_multilib_profile() {
+	[ -n "${MULTILIB_ABIS}" -a "${MULTILIB_ABIS}" != "${MULTILIB_ABIS/ /}" ]
+}
+
+# @FUNCTION: get_libdir
+# @RETURN: the libdir for the selected ABI
+# @DESCRIPTION:
+# This function simply returns the desired lib directory. With portage
+# 2.0.51, we now have support for installing libraries to lib32/lib64
+# to accomidate the needs of multilib systems. It's no longer a good idea
+# to assume all libraries will end up in lib. Replace any (sane) instances
+# where lib is named directly with $(get_libdir) if possible.
+#
+# Jeremy Huddleston <eradicator@gentoo.org> (23 Dec 2004):
+#   Added support for ${ABI} and ${DEFAULT_ABI}.  If they're both not set,
+#   fall back on old behavior.  Any profile that has these set should also
+#   depend on a newer version of portage (not yet released) which uses these
+#   over CONF_LIBDIR in econf, dolib, etc...
+if has "${EAPI:-0}" 0 1 2 3 4 5; then
+	get_libdir() {
+		local CONF_LIBDIR
+		if [ -n  "${CONF_LIBDIR_OVERRIDE}" ] ; then
+			# if there is an override, we want to use that... always.
+			echo ${CONF_LIBDIR_OVERRIDE}
+		else
+			get_abi_LIBDIR
+		fi
+	}
+fi
+
+# @FUNCTION: get_abi_var
+# @USAGE: <VAR> [ABI]
+# @RETURN: returns the value of ${<VAR>_<ABI>} which should be set in make.defaults
+# @INTERNAL
+# @DESCRIPTION:
+# ex:
+# CFLAGS=$(get_abi_var CFLAGS sparc32) # CFLAGS=-m32
+#
+# Note that the prefered method is to set CC="$(tc-getCC) $(get_abi_CFLAGS)"
+# This will hopefully be added to portage soon...
+#
+# If <ABI> is not specified, ${ABI} is used.
+# If <ABI> is not specified and ${ABI} is not defined, ${DEFAULT_ABI} is used.
+# If <ABI> is not specified and ${ABI} and ${DEFAULT_ABI} are not defined, we return an empty string.
+get_abi_var() {
+	local flag=$1
+	local abi=${2:-${ABI:-${DEFAULT_ABI:-default}}}
+	local var="${flag}_${abi}"
+	echo ${!var}
+}
+
+# @FUNCTION: get_abi_CFLAGS
+# @USAGE: [ABI]
+# @DESCRIPTION:
+# Alias for 'get_abi_var CFLAGS'
+get_abi_CFLAGS() { get_abi_var CFLAGS "$@"; }
+
+# @FUNCTION: get_abi_LDFLAGS
+# @USAGE: [ABI]
+# @DESCRIPTION:
+# Alias for 'get_abi_var LDFLAGS'
+get_abi_LDFLAGS() { get_abi_var LDFLAGS "$@"; }
+
+# @FUNCTION: get_abi_CHOST
+# @USAGE: [ABI]
+# @DESCRIPTION:
+# Alias for 'get_abi_var CHOST'
+get_abi_CHOST() { get_abi_var CHOST "$@"; }
+
+# @FUNCTION: get_abi_CTARGET
+# @USAGE: [ABI]
+# @DESCRIPTION:
+# Alias for 'get_abi_var CTARGET'
+get_abi_CTARGET() { get_abi_var CTARGET "$@"; }
+
+# @FUNCTION: get_abi_FAKE_TARGETS
+# @USAGE: [ABI]
+# @DESCRIPTION:
+# Alias for 'get_abi_var FAKE_TARGETS'
+get_abi_FAKE_TARGETS() { get_abi_var FAKE_TARGETS "$@"; }
+
+# @FUNCTION: get_abi_LIBDIR
+# @USAGE: [ABI]
+# @DESCRIPTION:
+# Alias for 'get_abi_var LIBDIR'
+get_abi_LIBDIR() { get_abi_var LIBDIR "$@"; }
+
+# @FUNCTION: get_install_abis
+# @DESCRIPTION:
+# Return a list of the ABIs we want to install for with
+# the last one in the list being the default.
+get_install_abis() {
+	local x order=""
+
+	if [[ -z ${MULTILIB_ABIS} ]] ; then
+		echo "default"
+		return 0
+	fi
+
+	if [[ ${EMULTILIB_PKG} == "true" ]] ; then
+		for x in ${MULTILIB_ABIS} ; do
+			if [[ ${x} != "${DEFAULT_ABI}" ]] ; then
+				has ${x} ${ABI_DENY} || order="${order} ${x}"
+			fi
+		done
+		has ${DEFAULT_ABI} ${ABI_DENY} || order="${order} ${DEFAULT_ABI}"
+
+		if [[ -n ${ABI_ALLOW} ]] ; then
+			local ordera=""
+			for x in ${order} ; do
+				if has ${x} ${ABI_ALLOW} ; then
+					ordera="${ordera} ${x}"
+				fi
+			done
+			order=${ordera}
+		fi
+	else
+		order=${DEFAULT_ABI}
+	fi
+
+	if [[ -z ${order} ]] ; then
+		die "The ABI list is empty.  Are you using a proper multilib profile?  Perhaps your USE flags or MULTILIB_ABIS are too restrictive for this package."
+	fi
+
+	echo ${order}
+	return 0
+}
+
+# @FUNCTION: get_all_abis
+# @DESCRIPTION:
+# Return a list of the ABIs supported by this profile.
+# the last one in the list being the default.
+get_all_abis() {
+	local x order="" mvar dvar
+
+	mvar="MULTILIB_ABIS"
+	dvar="DEFAULT_ABI"
+	if [[ -n $1 ]] ; then
+		mvar="$1_${mvar}"
+		dvar="$1_${dvar}"
+	fi
+
+	if [[ -z ${!mvar} ]] ; then
+		echo "default"
+		return 0
+	fi
+
+	for x in ${!mvar}; do
+		if [[ ${x} != ${!dvar} ]] ; then
+			order="${order:+${order} }${x}"
+		fi
+	done
+	order="${order:+${order} }${!dvar}"
+
+	echo ${order}
+	return 0
+}
+
+# @FUNCTION: get_all_libdirs
+# @DESCRIPTION:
+# Returns a list of all the libdirs used by this profile.  This includes
+# those that might not be touched by the current ebuild and always includes
+# "lib".
+get_all_libdirs() {
+	local libdirs abi
+
+	for abi in ${MULTILIB_ABIS}; do
+		libdirs+=" $(get_abi_LIBDIR ${abi})"
+	done
+	[[ " ${libdirs} " != *" lib "* ]] && libdirs+=" lib"
+
+	echo "${libdirs}"
+}
+
+# @FUNCTION: is_final_abi
+# @DESCRIPTION:
+# Return true if ${ABI} is the last ABI on our list (or if we're not
+# using the new multilib configuration.  This can be used to determine
+# if we're in the last (or only) run through src_{unpack,compile,install}
+is_final_abi() {
+	has_multilib_profile || return 0
+	set -- $(get_install_abis)
+	local LAST_ABI=$#
+	[[ ${!LAST_ABI} == ${ABI} ]]
+}
+
+# @FUNCTION: number_abis
+# @DESCRIPTION:
+# echo the number of ABIs we will be installing for
+number_abis() {
+	set -- `get_install_abis`
+	echo $#
+}
+
+# @FUNCTION: get_exeext
+# @DESCRIPTION:
+# Returns standard executable program suffix (null, .exe, etc.)
+# for the current platform identified by CHOST.
+#
+# Example:
+#     get_exeext
+#     Returns: null string (almost everywhere) || .exe (mingw*) || ...
+get_exeext() {
+	case ${CHOST} in
+		*-cygwin*|mingw*|*-mingw*)  echo ".exe";;
+	esac
+}
+
+# @FUNCTION: get_libname
+# @USAGE: [version]
+# @DESCRIPTION:
+# Returns libname with proper suffix {.so,.dylib,.dll,etc} and optionally
+# supplied version for the current platform identified by CHOST.
+#
+# Example:
+#     get_libname ${PV}
+#     Returns: .so.${PV} (ELF) || .${PV}.dylib (MACH) || ...
+get_libname() {
+	local libname
+	local ver=$1
+	case ${CHOST} in
+		*-cygwin*)       libname="dll.a";; # import lib
+		mingw*|*-mingw*) libname="dll";;
+		*-darwin*)       libname="dylib";;
+		*-mint*)         libname="irrelevant";;
+		hppa*-hpux*)     libname="sl";;
+		*)               libname="so";;
+	esac
+
+	if [[ -z $* ]] ; then
+		echo ".${libname}"
+	else
+		for ver in "$@" ; do
+			case ${CHOST} in
+				*-cygwin*) echo ".${ver}.${libname}";;
+				*-darwin*) echo ".${ver}.${libname}";;
+				*-mint*)   echo ".${libname}";;
+				*)         echo ".${libname}.${ver}";;
+			esac
+		done
+	fi
+}
+
+# @FUNCTION: get_modname
+# @USAGE:
+# @DESCRIPTION:
+# Returns modulename with proper suffix {.so,.bundle,etc} for the current
+# platform identified by CHOST.
+#
+# Example:
+#     libfoo$(get_modname)
+#     Returns: libfoo.so (ELF) || libfoo.bundle (MACH) || ...
+get_modname() {
+	local modname
+	local ver=$1
+	case ${CHOST} in
+		*-darwin*)                modname="bundle";;
+		*)                        modname="so";;
+	esac
+
+	echo ".${modname}"
+}
+
+# This is for the toolchain to setup profile variables when pulling in
+# a crosscompiler (and thus they aren't set in the profile).
+multilib_env() {
+	local CTARGET=${1:-${CTARGET}}
+	local cpu=${CTARGET%%*-}
+
+	if [[ ${CTARGET} = *-musl* ]]; then
+		# musl has no multilib support and can run only in 'lib':
+		# - https://bugs.gentoo.org/675954
+		# - https://gcc.gnu.org/PR90077
+		# - https://github.com/gentoo/musl/issues/245
+		: ${MULTILIB_ABIS=default}
+		: ${DEFAULT_ABI=default}
+		export MULTILIB_ABIS DEFAULT_ABI
+		return
+	fi
+
+	case ${cpu} in
+		aarch64*)
+			# Not possible to do multilib with aarch64 and a single toolchain.
+			export CFLAGS_arm=${CFLAGS_arm-}
+			case ${cpu} in
+			aarch64*be) export CHOST_arm="armv8b-${CTARGET#*-}";;
+			*)          export CHOST_arm="armv8l-${CTARGET#*-}";;
+			esac
+			CHOST_arm=${CHOST_arm/%-gnu/-gnueabi}
+			export CTARGET_arm=${CHOST_arm}
+			export LIBDIR_arm="lib"
+
+			export CFLAGS_arm64=${CFLAGS_arm64-}
+			export CHOST_arm64=${CTARGET}
+			export CTARGET_arm64=${CHOST_arm64}
+			export LIBDIR_arm64="lib64"
+
+			: ${MULTILIB_ABIS=arm64}
+			: ${DEFAULT_ABI=arm64}
+		;;
+		x86_64*)
+			export CFLAGS_x86=${CFLAGS_x86--m32}
+			export CHOST_x86=${CTARGET/x86_64/i686}
+			CHOST_x86=${CHOST_x86/%-gnux32/-gnu}
+			export CTARGET_x86=${CHOST_x86}
+			if [[ ${SYMLINK_LIB} == "yes" ]] ; then
+				export LIBDIR_x86="lib32"
+			else
+				export LIBDIR_x86="lib"
+			fi
+
+			export CFLAGS_amd64=${CFLAGS_amd64--m64}
+			export CHOST_amd64=${CTARGET/%-gnux32/-gnu}
+			export CTARGET_amd64=${CHOST_amd64}
+			export LIBDIR_amd64="lib64"
+
+			export CFLAGS_x32=${CFLAGS_x32--mx32}
+			export CHOST_x32=${CTARGET/%-gnu/-gnux32}
+			export CTARGET_x32=${CHOST_x32}
+			export LIBDIR_x32="libx32"
+
+			case ${CTARGET} in
+			*-gnux32)
+				: ${MULTILIB_ABIS=x32 amd64 x86}
+				: ${DEFAULT_ABI=x32}
+				;;
+			*)
+				: ${MULTILIB_ABIS=amd64 x86}
+				: ${DEFAULT_ABI=amd64}
+				;;
+			esac
+		;;
+		mips64*|mipsisa64*)
+			export CFLAGS_o32=${CFLAGS_o32--mabi=32}
+			export CHOST_o32=${CTARGET/mips64/mips}
+			export CHOST_o32=${CHOST_o32/mipsisa64/mipsisa32}
+			export CTARGET_o32=${CHOST_o32}
+			export LIBDIR_o32="lib"
+
+			export CFLAGS_n32=${CFLAGS_n32--mabi=n32}
+			export CHOST_n32=${CTARGET}
+			export CTARGET_n32=${CHOST_n32}
+			export LIBDIR_n32="lib32"
+
+			export CFLAGS_n64=${CFLAGS_n64--mabi=64}
+			export CHOST_n64=${CTARGET}
+			export CTARGET_n64=${CHOST_n64}
+			export LIBDIR_n64="lib64"
+
+			: ${MULTILIB_ABIS=n64 n32 o32}
+			: ${DEFAULT_ABI=n32}
+		;;
+		powerpc64*)
+			export CFLAGS_ppc=${CFLAGS_ppc--m32}
+			export CHOST_ppc=${CTARGET/powerpc64/powerpc}
+			export CTARGET_ppc=${CHOST_ppc}
+			export LIBDIR_ppc="lib"
+
+			export CFLAGS_ppc64=${CFLAGS_ppc64--m64}
+			export CHOST_ppc64=${CTARGET}
+			export CTARGET_ppc64=${CHOST_ppc64}
+			export LIBDIR_ppc64="lib64"
+
+			: ${MULTILIB_ABIS=ppc64 ppc}
+			: ${DEFAULT_ABI=ppc64}
+		;;
+		riscv64*)
+			export CFLAGS_lp64d=${CFLAGS_lp64d--mabi=lp64d}
+			export CHOST_lp64d=${CTARGET}
+			export CTARGET_lp64d=${CTARGET}
+			export LIBDIR_lp64d="lib64/lp64d"
+
+			export CFLAGS_lp64=${CFLAGS_lp64--mabi=lp64}
+			export CHOST_lp64=${CTARGET}
+			export CTARGET_lp64=${CTARGET}
+			export LIBDIR_lp64="lib64/lp64"
+
+			: ${MULTILIB_ABIS=lp64d lp64}
+			: ${DEFAULT_ABI=lp64d}
+		;;
+		s390x*)
+			export CFLAGS_s390=${CFLAGS_s390--m31} # the 31 is not a typo
+			export CHOST_s390=${CTARGET/s390x/s390}
+			export CTARGET_s390=${CHOST_s390}
+			export LIBDIR_s390="lib"
+
+			export CFLAGS_s390x=${CFLAGS_s390x--m64}
+			export CHOST_s390x=${CTARGET}
+			export CTARGET_s390x=${CHOST_s390x}
+			export LIBDIR_s390x="lib64"
+
+			: ${MULTILIB_ABIS=s390x s390}
+			: ${DEFAULT_ABI=s390x}
+		;;
+		sparc64*)
+			export CFLAGS_sparc32=${CFLAGS_sparc32--m32}
+			export CHOST_sparc32=${CTARGET/sparc64/sparc}
+			export CTARGET_sparc32=${CHOST_sparc32}
+			export LIBDIR_sparc32="lib"
+
+			export CFLAGS_sparc64=${CFLAGS_sparc64--m64}
+			export CHOST_sparc64=${CTARGET}
+			export CTARGET_sparc64=${CHOST_sparc64}
+			export LIBDIR_sparc64="lib64"
+
+			: ${MULTILIB_ABIS=sparc64 sparc32}
+			: ${DEFAULT_ABI=sparc64}
+		;;
+		*)
+			: ${MULTILIB_ABIS=default}
+			: ${DEFAULT_ABI=default}
+		;;
+	esac
+
+	export MULTILIB_ABIS DEFAULT_ABI
+}
+
+# @FUNCTION: multilib_toolchain_setup
+# @DESCRIPTION:
+# Hide multilib details here for packages which are forced to be compiled for a
+# specific ABI when run on another ABI (like x86-specific packages on amd64)
+multilib_toolchain_setup() {
+	local v vv
+
+	export ABI=$1
+
+	local save_restore_variables=(
+		CBUILD
+		CHOST
+		AR
+		CC
+		CXX
+		F77
+		FC
+		LD
+		NM
+		OBJDUMP
+		PKG_CONFIG
+		RANLIB
+		READELF
+		STRINGS
+		STRIP
+		PKG_CONFIG_LIBDIR
+		PKG_CONFIG_PATH
+		PKG_CONFIG_SYSTEM_LIBRARY_PATH
+	)
+
+	# First restore any saved state we have laying around.
+	if [[ ${_DEFAULT_ABI_SAVED} == "true" ]] ; then
+		for v in "${save_restore_variables[@]}" ; do
+			vv="_abi_saved_${v}"
+			[[ ${!vv+set} == "set" ]] && export ${v}="${!vv}" || unset ${v}
+			unset ${vv}
+		done
+		unset _DEFAULT_ABI_SAVED
+	fi
+
+	if [[ ${ABI} != ${DEFAULT_ABI} ]] ; then
+		# Back that multilib-ass up so we can restore it later
+		for v in "${save_restore_variables[@]}" ; do
+			vv="_abi_saved_${v}"
+			[[ ${!v+set} == "set" ]] && export ${vv}="${!v}" || unset ${vv}
+		done
+		export _DEFAULT_ABI_SAVED="true"
+
+		# Set CBUILD only if not cross-compiling.
+		if [[ ${CBUILD} == "${CHOST}" ]]; then
+			export CBUILD=$(get_abi_CHOST $1)
+		fi
+
+		# Set the CHOST native first so that we pick up the native
+		# toolchain and not a cross-compiler by accident #202811.
+		#
+		# Make sure ${save_restore_variables[@]} list matches below.
+		export CHOST=$(get_abi_CHOST ${DEFAULT_ABI})
+
+		export AR="$(tc-getAR)" # Avoid 'ar', use '${CHOST}-ar'
+		export CC="$(tc-getCC) $(get_abi_CFLAGS)"
+		export CXX="$(tc-getCXX) $(get_abi_CFLAGS)"
+		export F77="$(tc-getF77) $(get_abi_CFLAGS)"
+		export FC="$(tc-getFC) $(get_abi_CFLAGS)"
+		export LD="$(tc-getLD) $(get_abi_LDFLAGS)"
+		export NM="$(tc-getNM)" # Avoid 'nm', use '${CHOST}-nm'
+		export OBJDUMP="$(tc-getOBJDUMP)" # Avoid 'objdump', use '${CHOST}-objdump'
+		export PKG_CONFIG="$(tc-getPKG_CONFIG)"
+		export RANLIB="$(tc-getRANLIB)" # Avoid 'ranlib', use '${CHOST}-ranlib'
+		export READELF="$(tc-getREADELF)" # Avoid 'readelf', use '${CHOST}-readelf'
+		export STRINGS="$(tc-getSTRINGS)" # Avoid 'strings', use '${CHOST}-strings'
+		export STRIP="$(tc-getSTRIP)" # Avoid 'strip', use '${CHOST}-strip'
+
+		export CHOST=$(get_abi_CHOST $1)
+		export PKG_CONFIG_LIBDIR=${EPREFIX}/usr/$(get_libdir)/pkgconfig
+		export PKG_CONFIG_PATH=${EPREFIX}/usr/share/pkgconfig
+		export PKG_CONFIG_SYSTEM_LIBRARY_PATH=${EPREFIX}/usr/$(get_libdir)
+	fi
+}
+
+fi