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# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-binutils.eclass,v 1.91 2010/04/19 23:02:56 vapier Exp $
#
# Maintainer: Toolchain Ninjas <toolchain@gentoo.org>
#
# We install binutils into CTARGET-VERSION specific directories.  This lets
# us easily merge multiple versions for multiple targets (if we wish) and
# then switch the versions on the fly (with `binutils-config`).
#
# binutils-9999           -> live cvs
# binutils-9999_preYYMMDD -> nightly snapshot date YYMMDD
# binutils-#              -> normal release

extra_eclass=""
if [[ -n ${BINUTILS_TYPE} ]] ; then
	BTYPE=${BINUTILS_TYPE}
else
	case ${PV} in
	9999)      BTYPE="cvs";;
	9999_pre*) BTYPE="snap";;
	*)         BTYPE="rel";;
	esac
fi

if [[ ${BTYPE} == "cvs" ]] ; then
	extra_eclass="cvs"
	ECVS_SERVER="sourceware.org:/cvs/src"
	ECVS_MODULE="binutils"
	ECVS_USER="anoncvs"
	ECVS_PASS="anoncvs"
	BVER="cvs"
elif [[ ${BTYPE} == "snap" ]] ; then
	BVER=${PV/9999_pre}
elif [[ ${BTYPE} == "rel" ]] ; then
	BVER=${PV}
else
	BVER=${BINUTILS_VER}
fi

inherit eutils libtool flag-o-matic gnuconfig multilib versionator ${extra_eclass}
EXPORT_FUNCTIONS src_unpack src_compile src_test src_install pkg_postinst pkg_postrm

export CTARGET=${CTARGET:-${CHOST}}
if [[ ${CTARGET} == ${CHOST} ]] ; then
	if [[ ${CATEGORY/cross-} != ${CATEGORY} ]] ; then
		export CTARGET=${CATEGORY/cross-}
	fi
fi
is_cross() { [[ ${CHOST} != ${CTARGET} ]] ; }

DESCRIPTION="Tools necessary to build programs"
HOMEPAGE="http://sources.redhat.com/binutils/"

case ${BTYPE} in
	cvs)  SRC_URI="";;
	snap) SRC_URI="ftp://gcc.gnu.org/pub/binutils/snapshots/binutils-${BVER}.tar.bz2";;
	rel)
		SRC_URI="mirror://kernel/linux/devel/binutils/binutils-${PV}.tar.bz2
			mirror://kernel/linux/devel/binutils/test/binutils-${PV}.tar.bz2
			mirror://gnu/binutils/binutils-${PV}.tar.bz2"
esac
add_src_uri() {
	[[ -z $2 ]] && return
	local a=$1
	set -- mirror://gentoo http://dev.gentoo.org/~vapier/dist
	SRC_URI="${SRC_URI} ${@/%//${a}}"
}
add_src_uri binutils-${PV}-patches-${PATCHVER}.tar.bz2 ${PATCHVER}
add_src_uri binutils-${PV}-uclibc-patches-${UCLIBC_PATCHVER}.tar.bz2 ${UCLIBC_PATCHVER}
add_src_uri elf2flt-${ELF2FLT_VER}.tar.bz2 ${ELF2FLT_VER}

if version_is_at_least 2.18 ; then
	LICENSE="|| ( GPL-3 LGPL-3 )"
else
	LICENSE="|| ( GPL-2 LGPL-2 )"
fi
IUSE="nls multitarget multislot test vanilla"
if use multislot ; then
	SLOT="${CTARGET}-${BVER}"
elif is_cross ; then
	SLOT="${CTARGET}"
else
	SLOT="0"
fi

RDEPEND=">=sys-devel/binutils-config-1.9"
DEPEND="${RDEPEND}
	test? ( dev-util/dejagnu )
	nls? ( sys-devel/gettext )
	sys-devel/flex"

S=${WORKDIR}/binutils
[[ ${BVER} != "cvs" ]] && S=${S}-${BVER}

LIBPATH=/usr/$(get_libdir)/binutils/${CTARGET}/${BVER}
INCPATH=${LIBPATH}/include
DATAPATH=/usr/share/binutils-data/${CTARGET}/${BVER}
MY_BUILDDIR=${WORKDIR}/build
if is_cross ; then
	BINPATH=/usr/${CHOST}/${CTARGET}/binutils-bin/${BVER}
else
	BINPATH=/usr/${CTARGET}/binutils-bin/${BVER}
fi

tc-binutils_unpack() {
	unpack ${A}
	mkdir -p "${MY_BUILDDIR}"
	[[ -d ${WORKDIR}/patch ]] && mkdir "${WORKDIR}"/patch/skip
}

tc-binutils_apply_patches() {
	cd "${S}"

	if ! use vanilla ; then
		if [[ -n ${PATCHVER} ]] ; then
			EPATCH_SOURCE=${WORKDIR}/patch
			if [[ ${CTARGET} == mips* ]] ; then
				# remove gnu-hash for mips (bug #233233)
				EPATCH_EXCLUDE="77_all_generate-gnu-hash.patch"
			fi
			[[ -n $(ls "${EPATCH_SOURCE}"/*.bz2 2>/dev/null) ]] \
				&& EPATCH_SUFFIX="patch.bz2" \
				|| EPATCH_SUFFIX="patch"
			epatch
		fi
		if [[ -n ${UCLIBC_PATCHVER} ]] ; then
			EPATCH_SOURCE=${WORKDIR}/uclibc-patches
			[[ -n $(ls "${EPATCH_SOURCE}"/*.bz2 2>/dev/null) ]] \
				&& EPATCH_SUFFIX="patch.bz2" \
				|| EPATCH_SUFFIX="patch"
			EPATCH_MULTI_MSG="Applying uClibc fixes ..." \
			epatch
		elif [[ ${CTARGET} == *-uclibc* ]] ; then
			# starting with binutils-2.17.50.0.17, we no longer need
			# uClibc patchsets :D
			if grep -qs 'linux-gnu' "${S}"/ltconfig ; then
				die "sorry, but this binutils doesn't yet support uClibc :("
			fi
		fi
		epatch_user
	fi

	# fix locale issues if possible #122216
	if [[ -e ${FILESDIR}/binutils-configure-LANG.patch ]] ; then
		einfo "Fixing misc issues in configure files"
		for f in $(grep -l 'autoconf version 2.13' $(find "${S}" -name configure)) ; do
			ebegin "  Updating ${f/${S}\/}"
			patch "${f}" "${FILESDIR}"/binutils-configure-LANG.patch >& "${T}"/configure-patch.log \
				|| eerror "Please file a bug about this"
			eend $?
		done
	fi
	# fix conflicts with newer glibc #272594
	if [[ -e libiberty/testsuite/test-demangle.c ]] ; then
		sed -i 's:\<getline\>:get_line:g' libiberty/testsuite/test-demangle.c
	fi

	# Fix po Makefile generators
	sed -i \
		-e '/^datadir = /s:$(prefix)/@DATADIRNAME@:@datadir@:' \
		-e '/^gnulocaledir = /s:$(prefix)/share:$(datadir):' \
		*/po/Make-in || die "sed po's failed"

	# Run misc portage update scripts
	gnuconfig_update
	elibtoolize --portage --no-uclibc
}

toolchain-binutils_src_unpack() {
	tc-binutils_unpack
	tc-binutils_apply_patches
}

toolchain-binutils_src_compile() {
	# prevent makeinfo from running in releases.  it may not always be
	# installed, and older binutils may fail with newer texinfo.
	# besides, we never patch the doc files anyways, so regenerating
	# in the first place is useless. #193364
	find . '(' -name '*.info' -o -name '*.texi' ')' -print0 | xargs -0 touch -r .

	# make sure we filter $LINGUAS so that only ones that
	# actually work make it through #42033
	strip-linguas -u */po

	# keep things sane
	strip-flags

	local x
	echo
	for x in CATEGORY CBUILD CHOST CTARGET CFLAGS LDFLAGS ; do
		einfo "$(printf '%10s' ${x}:) ${!x}"
	done
	echo

	cd "${MY_BUILDDIR}"
	local myconf=""
	# new versions allow gold and ld; screw older versions
	if grep -q 'enable-gold=both/ld' "${S}"/configure ; then
		myconf="${myconf} --enable-gold=both/ld"
	elif grep -q 'enable-gold=both/bfd' "${S}"/configure ; then
		myconf="${myconf} --enable-gold=both/bfd"
	fi
	use nls \
		&& myconf="${myconf} --without-included-gettext" \
		|| myconf="${myconf} --disable-nls"
	use multitarget && myconf="${myconf} --enable-targets=all"
	[[ -n ${CBUILD} ]] && myconf="${myconf} --build=${CBUILD}"
	is_cross && myconf="${myconf} --with-sysroot=/usr/${CTARGET}"
	# glibc-2.3.6 lacks support for this ... so rather than force glibc-2.5+
	# on everyone in alpha (for now), we'll just enable it when possible
	has_version ">=${CATEGORY}/glibc-2.5" && myconf="${myconf} --enable-secureplt"
	has_version ">=sys-libs/glibc-2.5" && myconf="${myconf} --enable-secureplt"
	myconf="--prefix=/usr \
		--host=${CHOST} \
		--target=${CTARGET} \
		--datadir=${DATAPATH} \
		--infodir=${DATAPATH}/info \
		--mandir=${DATAPATH}/man \
		--bindir=${BINPATH} \
		--libdir=${LIBPATH} \
		--libexecdir=${LIBPATH} \
		--includedir=${INCPATH} \
		--enable-64-bit-bfd \
		--enable-shared \
		--disable-werror \
		${myconf} ${EXTRA_ECONF}"
	echo ./configure ${myconf}
	"${S}"/configure ${myconf} || die "configure failed"

	emake all || die "emake failed"

	# only build info pages if we user wants them, and if
	# we have makeinfo (may not exist when we bootstrap)
	if type -p makeinfo > /dev/null ; then
		emake info || die "make info failed"
	fi
	# we nuke the manpages when we're left with junk
	# (like when we bootstrap, no perl -> no manpages)
	find . -name '*.1' -a -size 0 | xargs rm -f

	# elf2flt only works on some arches / targets
	if [[ -n ${ELF2FLT_VER} ]] && [[ ${CTARGET} == *linux* || ${CTARGET} == *-elf* ]] ; then
		cd "${WORKDIR}"/elf2flt-${ELF2FLT_VER}

		local x supported_arches=$(sed -n '/defined(TARGET_/{s:^.*TARGET_::;s:)::;p}' elf2flt.c | sort -u)
		for x in ${supported_arches} UNSUPPORTED ; do
			[[ ${CTARGET} == ${x}* ]] && break
		done

		if [[ ${x} != "UNSUPPORTED" ]] ; then
			append-flags -I"${S}"/include
			myconf="--with-bfd-include-dir=${MY_BUILDDIR}/bfd \
				--with-libbfd=${MY_BUILDDIR}/bfd/libbfd.a \
				--with-libiberty=${MY_BUILDDIR}/libiberty/libiberty.a \
				--with-binutils-ldscript-dir=${LIBPATH}/ldscripts \
				${myconf}"
			echo ./configure ${myconf}
			./configure ${myconf} || die "configure elf2flt failed"
			emake || die "make elf2flt failed"
		fi
	fi
}

toolchain-binutils_src_test() {
	cd "${MY_BUILDDIR}"
	make check || die "check failed :("
}

toolchain-binutils_src_install() {
	local x d

	cd "${MY_BUILDDIR}"
	emake DESTDIR="${D}" tooldir="${LIBPATH}" install || die
	rm -rf "${D}"/${LIBPATH}/bin

	# Newer versions of binutils get fancy with ${LIBPATH} #171905
	cd "${D}"/${LIBPATH}
	for d in ../* ; do
		[[ ${d} == ../${BVER} ]] && continue
		mv ${d}/* . || die
		rmdir ${d} || die
	done

	# Now we collect everything intp the proper SLOT-ed dirs
	# When something is built to cross-compile, it installs into
	# /usr/$CHOST/ by default ... we have to 'fix' that :)
	if is_cross ; then
		cd "${D}"/${BINPATH}
		for x in * ; do
			mv ${x} ${x/${CTARGET}-}
		done

		if [[ -d ${D}/usr/${CHOST}/${CTARGET} ]] ; then
			mv "${D}"/usr/${CHOST}/${CTARGET}/include "${D}"/${INCPATH}
			mv "${D}"/usr/${CHOST}/${CTARGET}/lib/* "${D}"/${LIBPATH}/
			rm -r "${D}"/usr/${CHOST}/{include,lib}
		fi
	fi
	insinto ${INCPATH}
	doins "${S}/include/libiberty.h"
	if [[ -d ${D}/${LIBPATH}/lib ]] ; then
		mv "${D}"/${LIBPATH}/lib/* "${D}"/${LIBPATH}/
		rm -r "${D}"/${LIBPATH}/lib
	fi

	# Insert elf2flt where appropriate
	if [[ -x ${WORKDIR}/elf2flt-${ELF2FLT_VER}/elf2flt ]] ; then
		cd "${WORKDIR}"/elf2flt-${ELF2FLT_VER}
		insinto ${LIBPATH}/ldscripts
		doins elf2flt.ld || die "doins elf2flt.ld failed"
		exeinto ${BINPATH}
		doexe elf2flt flthdr || die "doexe elf2flt flthdr failed"
		mv "${D}"/${BINPATH}/{ld,ld.real} || die
		newexe ld-elf2flt ld || die "doexe ld-elf2flt failed"
		newdoc README README.elf2flt
	fi

	# Now, some binutils are tricky and actually provide
	# for multiple TARGETS.  Really, we're talking just
	# 32bit/64bit support (like mips/ppc/sparc).  Here
	# we want to tell binutils-config that it's cool if
	# it generates multiple sets of binutil symlinks.
	# e.g. sparc gets {sparc,sparc64}-unknown-linux-gnu
	local targ=${CTARGET/-*} src="" dst=""
	local FAKE_TARGETS=${CTARGET}
	case ${targ} in
		mips*)    src="mips"    dst="mips64";;
		powerpc*) src="powerpc" dst="powerpc64";;
		s390*)    src="s390"    dst="s390x";;
		sparc*)   src="sparc"   dst="sparc64";;
	esac
	case ${targ} in
		mips64*|powerpc64*|s390x*|sparc64*) targ=${src} src=${dst} dst=${targ};;
	esac
	[[ -n ${src}${dst} ]] && FAKE_TARGETS="${FAKE_TARGETS} ${CTARGET/${src}/${dst}}"

	# Generate an env.d entry for this binutils
	cd "${S}"
	insinto /etc/env.d/binutils
	cat <<-EOF > env.d
		TARGET="${CTARGET}"
		VER="${BVER}"
		LIBPATH="${LIBPATH}"
		FAKE_TARGETS="${FAKE_TARGETS}"
	EOF
	newins env.d ${CTARGET}-${BVER}

	# Handle documentation
	if ! is_cross ; then
		cd "${S}"
		dodoc README
		docinto bfd
		dodoc bfd/ChangeLog* bfd/README bfd/PORTING bfd/TODO
		docinto binutils
		dodoc binutils/ChangeLog binutils/NEWS binutils/README
		docinto gas
		dodoc gas/ChangeLog* gas/CONTRIBUTORS gas/NEWS gas/README*
		docinto gprof
		dodoc gprof/ChangeLog* gprof/TEST gprof/TODO gprof/bbconv.pl
		docinto ld
		dodoc ld/ChangeLog* ld/README ld/NEWS ld/TODO
		docinto libiberty
		dodoc libiberty/ChangeLog* libiberty/README
		docinto opcodes
		dodoc opcodes/ChangeLog*
	fi
	# Remove shared info pages
	rm -f "${D}"/${DATAPATH}/info/{dir,configure.info,standards.info}
	# Trim all empty dirs
	find "${D}" -type d | xargs rmdir >& /dev/null
}

toolchain-binutils_pkg_postinst() {
	# Make sure this ${CTARGET} has a binutils version selected
	[[ -e ${ROOT}/etc/env.d/binutils/config-${CTARGET} ]] && return 0
	binutils-config ${CTARGET}-${BVER}
}

toolchain-binutils_pkg_postrm() {
	local current_profile=$(binutils-config -c ${CTARGET})

	# If no other versions exist, then uninstall for this
	# target ... otherwise, switch to the newest version
	# Note: only do this if this version is unmerged.  We
	#       rerun binutils-config if this is a remerge, as
	#       we want the mtimes on the symlinks updated (if
	#       it is the same as the current selected profile)
	if [[ ! -e ${BINPATH}/ld ]] && [[ ${current_profile} == ${CTARGET}-${BVER} ]] ; then
		local choice=$(binutils-config -l | grep ${CTARGET} | awk '{print $2}')
		choice=${choice//$'\n'/ }
		choice=${choice/* }
		if [[ -z ${choice} ]] ; then
			env -i binutils-config -u ${CTARGET}
		else
			binutils-config ${choice}
		fi
	elif [[ $(CHOST=${CTARGET} binutils-config -c) == ${CTARGET}-${BVER} ]] ; then
		binutils-config ${CTARGET}-${BVER}
	fi
}