# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
# Distributed under the terms of the GNU General Public License v2

CROS_WORKON_PROJECT=chromiumos/third_party/binutils

inherit eutils libtool flag-o-matic gnuconfig multilib versionator cros-workon

KEYWORDS="~*"

BVER=${PV}

# Version names
if [[ "${PV}" == "9999" ]] ; then
	BINUTILS_VERSION="binutils-2.22"
else
	BINUTILS_VERSION="${P}"
fi

BINUTILS_PKG_VERSION="${BINUTILS_VERSION}_cos_gg"

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/"
LICENSE="|| ( GPL-3 LGPL-3 )"
IUSE="hardened mounted_binutils multislot multitarget nls 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_BINUTILS="${WORKDIR}/${BINUTILS_VERSION}"

RESTRICT="fetch strip"

MY_BUILDDIR_BINUTILS="${WORKDIR}/build"

GITDIR=${WORKDIR}/gitdir

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

src_unpack() {
	if use mounted_binutils ; then
		BINUTILS_DIR="/usr/local/toolchain_root/binutils"
		if [[ ! -d ${BINUTILS_DIR} ]] ; then
			die "binutils dirs not mounted at: ${BINUTILS_DIR}"
		fi
	else
		cros-workon_src_unpack
		mv "${S}" "${GITDIR}"
		BINUTILS_DIR="${GITDIR}"
		if [ -d "${GITDIR}/.git" ]; then
			CL=$(cd "${BINUTILS_DIR}"; git log --pretty=format:%s -n1 | egrep -o '[0-9]+')
		fi
	fi
	if [[ ! -z ${CL} ]] ; then
		BINUTILS_PKG_VERSION="${BINUTILS_PKG_VERSION}_${CL}"
	fi
	ln -s ${BINUTILS_DIR} ${S_BINUTILS}

	mkdir -p "${MY_BUILDDIR_BINUTILS}"
}


src_compile() {
	# 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 "${MY_BUILDDIR_BINUTILS}"
	local myconf=""
	is_cross && myconf="${myconf} --with-sysroot=/usr/${CTARGET}"
	myconf="--prefix=/usr \
		--host=${CHOST} \
		--target=${CTARGET} \
		--datadir=${DATAPATH} \
		--infodir=${DATAPATH}/info \
		--mandir=${DATAPATH}/man \
		--bindir=${BINPATH} \
		--libdir=${LIBPATH} \
		--libexecdir=${LIBPATH} \
		--includedir=${INCPATH} \
		--enable-64-bit-bfd \
		--enable-gold \
		--enable-threads \
		--enable-shared \
		--disable-werror \
		--enable-secureplt \
		--enable-plugins \
		--without-included-gettext \
		--build=${CBUILD} \
		--with-bugurl=http://code.google.com/p/chromium-os/issues/entry \
		${myconf} ${EXTRA_ECONF}"

	binutils_conf="${myconf} --with-pkgversion=${BINUTILS_PKG_VERSION}"

	echo ./configure ${binutils_conf}
	"${S_BINUTILS}"/configure ${binutils_conf} || 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
}

src_test() {
	cd "${MY_BUILDDIR_BINUTILS}"
	make check || die "check failed :("
}

src_install() {
	local x d

	cd "${MY_BUILDDIR_BINUTILS}"
	emake DESTDIR="${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_BINUTILS}/include/libiberty.h"
	if [[ -d ${D}/${LIBPATH}/lib ]] ; then
		mv "${D}"/${LIBPATH}/lib/* "${D}"/${LIBPATH}/
		rm -r "${D}"/${LIBPATH}/lib
	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
	insinto /etc/env.d/binutils
	cat <<-EOF > "${T}"/env.d
	TARGET="${CTARGET}"
	VER="${BVER}"
	LIBPATH="${LIBPATH}"
	FAKE_TARGETS="${FAKE_TARGETS}"
	EOF
	newins "${T}"/env.d ${CTARGET}-${BVER}

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

	if use hardened ; then
		LDWRAPPER=ldwrapper.hardened
	else
		LDWRAPPER=ldwrapper
	fi

	mv "${D}/${BINPATH}/ld.bfd" "${D}/${BINPATH}/ld.bfd.real" || die
	exeinto "${BINPATH}"
	newexe "${FILESDIR}/${LDWRAPPER}" "ld.bfd" || die
	if [[ ${CTARGET} == mips* ]] ; then
		# For mips targets, GNU hash cannot work due to ABI constraints.
		sed -i \
			-e 's:--hash-style=gnu:--hash-style=sysv:' \
			"${D}/${BINPATH}/ld.bfd" || die
	fi

	# Set default to be ld.bfd in regular installation
	dosym ld.bfd "${BINPATH}/ld"

	# Require gold for targets we know support gold, but auto-detect others.
	local gold=false
	case ${CTARGET} in
	arm*|i?86-*|powerpc*|sparc*|x86_64-*)
		gold=true
		;;
	*)
		[[ -e ${D}/${BINPATH}/ld.gold ]] && gold=true
		;;
	esac

	if ${gold} ; then
		mv "${D}/${BINPATH}/ld.gold" "${D}/${BINPATH}/ld.gold.real" || die
		exeinto "${BINPATH}"
		newexe "${FILESDIR}/${LDWRAPPER}" "ld.gold" || die

		# Make a fake installation for gold with gold as the default linker
		# so we can turn gold on/off with binutils-config
		LASTDIR=${LIBPATH##/*/}
		dosym "${LASTDIR}" "${LIBPATH}-gold"
		LASTDIR=${DATAPATH##/*/}
		dosym "${LASTDIR}" "${DATAPATH}-gold"

		mkdir "${D}/${BINPATH}-gold"
		cd "${D}"/${BINPATH}
		LASTDIR=${BINPATH##/*/}
		for x in * ; do
			dosym "../${LASTDIR}/${x}" "${BINPATH}-gold/${x}"
		done
		dosym ld.gold "${BINPATH}-gold/ld"

		# Install gold binutils-config configuration file
		insinto /etc/env.d/binutils
		cat <<-EOF > "${T}"/env.d
		TARGET="${CTARGET}"
		VER="${BVER}-gold"
		LIBPATH="${LIBPATH}-gold"
		FAKE_TARGETS="${FAKE_TARGETS}"
		EOF
		newins "${T}"/env.d ${CTARGET}-${BVER}-gold
	fi

	# Move the locale directory to where it is supposed to be
	mv "${D}/usr/share/locale" "${D}/${DATAPATH}/"
}

pkg_postinst() {
	binutils-config ${CTARGET}-${BVER}
}

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
}