# $Header: /magellan-cvs/smage/glibc-nptl/glibc-nptl-2.7.0-r3.smage2,v 1.1 2008/10/06 18:35:31 niro Exp $

PNAME="glibc-nptl"
PVER="2.7.0"
PBUILD="r3"

PCATEGORIE="sys-libs"
STATE="unstable"

DESCRIPTION="GNU libc6 (also called glibc2) C library with NPTL Threads."
HOMEPAGE="http://www.gnu.org/software/libc/libc.html"

DEPEND=">= sys-libs/libstdc++-4.2
	>= sys-apps/base-files-0.1"

# we force headers to one specific version
# (for x86_64 2.6.12.0-r2 bi-arch headers are needed!)
SDEPEND="== sys-kernel/linux-libc-headers-2.6.24"
PROVIDE="virtual/glibc"

# functions to include in the mage file
SPECIAL_FUNCTIONS="fix_db_files"

SRCFILE="glibc-${PVER/.0/}.tar.bz2"
SRCDIR="${BUILDDIR}/glibc-${PVER/.0/}"

GLIBC_LIBIDN="glibc-libidn-${PVER/.0/}.tar.bz2"
GLIBC_LIBIDN_SRCDIR="${BUILDDIR}/glibc-libidn-${PVER/.0/}"

sminclude mtools

SRC_URI=(
	gnu://glibc/${SRCFILE}
	mirror://glibc/${SRCFILE}
	gnu://glibc/${GLIBC_LIBIDN}
	mirror://glibc/${GLIBC_LIBIDN}
	mirror://glibc/nsswitch.conf
	mirror://glibc/nscd.conf
	mirror://glibc/glibc.envd
	mirror://glibc/locale-gen
	mirror://glibc/locale.gen
	mirror://glibc/glibc-2.3.5-localedef_segfault-1.patch
	mirror://glibc/glibc-2.7.0-static__vdso_clock_gettime.patch
)

# glibc don't like strong CFLAGS
export CFLAGS="${CFLAGS//-O?} -O2"
# glibc -> nptl thread don't like striping
NOSTRIP=true
# gcc 3.0 - 3.3 needs this:
export CFLAGS="${CFLAGS} -finline-limit=2000"
export CXXFLAGS="${CFLAGS}"
export LDFLAGS="${LDFLAGS//-Wl,--relax}"

# hack to fix NPTL issues with xen, only required on 32bit arches
if [[ ${ARCH} = i*86 ]]
then
	export CFLAGS="${CFLAGS} -mno-tls-direct-seg-refs"
fi

# glibc-2.6.1 and above needs march CFLAGS: -march=${ARCH} -mtune=generic
# first filter -mtune and -march from flags
for flag in ${CFLAGS}
do
	case ${flag} in
		-mtune=*) continue ;;
		-march=*) continue ;;
	esac
	newflags="${newflags} ${flag}"
done
# than add our defaults for glibc
[[ ${ARCH} = i*86 ]] && export CFLAGS="${CFLAGS} -march=${ARCH}" # only i*86
export CFLAGS="${CFLAGS} -mtune=generic" # all arches
export CXXFLAGS="${CFLAGS}"

# use other linux-headers
[[ -z ${ALT_HEADERS} ]] && export ALT_HEADERS="/usr/include"

src_prepare()
{
	munpack ${SRCFILE} || die
	# use the full libidn library not the bundled addon
	# many apps that rely on libidn needs the full lib
	munpack ${GLIBC_LIBIDN} || die
	mv ${GLIBC_LIBIDN_SRCDIR} ${SRCDIR}/libidn || die
	cd ${SRCDIR}

	# disable binutils -as-needed
	sed -i 's/^have-as-needed.*/have-as-needed = no/' ${SRCDIR}/config.make.in || die

	# fix segfault of localdef on arches beside x86-32
	mpatch glibc-2.3.5-localedef_segfault-1.patch || die

	# fixes errors with the __vdso_clock_gettime symbol
	# while compiling static linked code.
	# see: http://bbs.archlinux.org/viewtopic.php?pid=297346
	# and http://sourceware.org/ml/glibc-bugs/2008-01/msg00006.html
	mpatch glibc-2.7.0-static__vdso_clock_gettime.patch || die

	# fix permissions on some of the scripts
	chmod u+x ${SRCDIR}/scripts/*.sh || die

	install -d ${SRCDIR}/build || die
	cd ${SRCDIR}/build

	if [ ! -f /etc/ld.so.conf ]
	then
		touch /etc/ld.so.conf || die
	fi
}

src_compile()
{
	# support multilib lib64 dir (x86_64 only)
	if [[ ${ARCH} = x86_64 ]]
	then
		# first build a -m32 version
		install -d ${SRCDIR}/build-m32
		cd ${SRCDIR}/build-m32

		CC="gcc -m32" CXX="g++ -m32" \
		CFLAGS="${CFLAGS//-march=${ARCH}} -march=i686" \
		CXXFLAGS="${CXXFLAGS//-march=${ARCH}} -march=i686" \
		../configure \
			--build=${CHOST} \
			--host=i686-pc-linux-gnu \
			--prefix=/usr \
			--mandir=/usr/share/man \
			--infodir=/usr/share/info \
			--disable-profile \
			--enable-add-ons=nptl,libidn \
			--with-tls \
			--with-__thread \
			--enable-kernel=2.6.0 \
			--without-cvs \
			--without-gd \
			--libdir=/usr/lib \
			--libexecdir=/usr/lib/glibc \
			--with-headers=${ALT_HEADERS} \
			|| die

		make PARALLELMFLAGS="${MAKEOPTS}" || die
	fi

	cd ${SRCDIR}/build

	if [[ ${ARCH} = x86_64 ]]; then
		# make sure the -m64 libs goes really to /lib64
		echo "slibdir=/$(mlibdir)" >> ${SRCDIR}/build/configparms || die
	fi

	# kernel-2.6 with nptl needs this
	../configure \
		--build=${CHOST} \
		--host=${CHOST} \
		--prefix=/usr \
		--mandir=/usr/share/man \
		--infodir=/usr/share/info \
		--disable-profile \
		--enable-add-ons=nptl,libidn \
		--with-tls \
		--with-__thread \
		--enable-kernel=2.6.0 \
		--without-cvs \
		--without-gd \
		--libdir=/usr/$(mlibdir) \
		--libexecdir=/usr/$(mlibdir)/glibc \
		--with-headers=${ALT_HEADERS} \
		|| die

	make PARALLELMFLAGS="${MAKEOPTS}" || die
}

src_install()
{
	if [[ ${ARCH} = x86_64 ]]
	then
		# install -m32 libs
		cd ${SRCDIR}/build-m32
		make PARALLELMFLAGS="${MAKEOPTS}" install_root=${BINDIR} install || die
	fi

	cd ${SRCDIR}/build
	make PARALLELMFLAGS="${MAKEOPTS}" install_root=${BINDIR} install || die

# do not generate the locales here, let it the user do with the locale-gen tool
#	make PARALLELMFLAGS="${MAKEOPTS}" install_root=${BINDIR} localedata/install-locales || die

	# install locales list and generate tools
	# to generate this listing see the glibc-2.5/localedata/SUPPORTED file
	minstalletc locale.gen || die
	minstalldir /usr/sbin || die
	minstallexec -s locale-gen /usr/sbin || die

	# nsswitch configuration file
	minstalletc nsswitch.conf || die

	# nscd configuration file
	minstalletc nscd.conf || die

	# we use Berlin as default
	cp --remove-destination ${BINDIR}/usr/share/zoneinfo/Europe/Berlin ${BINDIR}/etc/localtime || die
	[ -f ${BINDIR}/etc/ld.so.conf ] && { rm -f ${BINDIR}/etc/ld.so.conf || die; }
	[ -e ${BINDIR}/etc/ld.so.cache ] && { rm -rf ${BINDIR}/etc/ld.so.cache || die; }

	# base environment
	minstallenv glibc.envd 00glibc || die
	if [[ ${ARCH} = x86_64 ]]
	then
		echo "LDPATH=\"/usr/local/$(mlibdir)\"" >> ${BINDIR}/etc/env.d/00glibc || die
		echo "LDPATH=\"/opt/$(mlibdir)\"" >> ${BINDIR}/etc/env.d/00glibc || die
	fi

	# move some libs and tools to proper locations
	# will suppress some ldconfig errors too
	mv ${BINDIR}/$(mlibdir)/libmemusage.so ${BINDIR}/usr/$(mlibdir) || die
	mv ${BINDIR}/$(mlibdir)/libpcprofile.so ${BINDIR}/usr/$(mlibdir) || die
	mlink ../usr/$(mlibdir)/libmemusage.so /$(mlibdir)/libmemusage.so || die
	mlink ../usr/$(mlibdir)/libpcprofile.so /$(mlibdir)/libpcprofile.so || die

	# strip all binaries
	find ${BINDIR} | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded || die

	# strip all libraries
	# want to be safe here; --strip-unneeded seems to cause pthread problems
	# strip all but libpthread
	install -d ${BUILDDIR}/thread-backup || die
	mv ${BINDIR}/$(mlibdir)/lib{pthread,thread_db}* ${BUILDDIR}/thread-backup/ || die

	# now strip
	find ${BINDIR} | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded || die
	mv -f ${BUILDDIR}/thread-backup/* ${BINDIR}/$(mlibdir)/ || die
	# remove stale directory
	rm -rf ${BUILDDIR}/thread-backup || die

	# prepare glibc for installation; slackware method
	minstalldir /incoming || die
	mv ${BINDIR}/$(mlibdir)/* ${BINDIR}/incoming || die
	mv ${BINDIR}/incoming ${BINDIR}/$(mlibdir)/incoming || die
	mv ${BINDIR}/$(mlibdir)/incoming/libSegFault.so ${BINDIR}/$(mlibdir) || die
}

fix_db_files()
{
	local i
	local DB_ENTRY="${BUILDDIR}/${PKGNAME}"

	for i in .files .symlinks .dirs
	do
		[ ! -f ${DB_ENTRY}/${i} ] && continue
		[[ -z $(< ${DB_ENTRY}/${i}) ]] && continue

		echo "     fixing /$(mlibdir)/incoming from db-entry '${i}' ..."

		# /lib/incoming -> empty line; sed2 removes all empty lines
		#sed -i -e "s:/$(mlibdir)/incoming.*::g" -e '/^$/d' ${DB_ENTRY}/${i}
		# do not simply emtpy the line, but change it the the correct path,
		# so no stale libs are around if the package gets updated!
		sed -i -e "s:/$(mlibdir)/incoming:/$(mlibdir):g" \
			-e "s:/$(mlibdir)/incoming.*::g" -e '/^$/d' ${DB_ENTRY}/${i}
	done
}

preinstall()
{
	# remove libmemusage and libpcprofile as these libs now
	# resides in /usr/lib and are symlinked to /lib
	if [[ -f ${MROOT}/$(mlibdir)/libmemusage.so ]]
	then
		rm ${MROOT}/$(mlibdir)/libmemusage.so
	fi

	if [[ -f ${MROOT}/$(mlibdir)/libpcprofile.so ]]
	then
		rm ${MROOT}/$(mlibdir)/libpcprofile.so
	fi
}

postinstall()
{
	# first save the old libpthread.so.0;
	# it will later used to determinate that there are no stale
	# libpthreads that breaks ldconfig
	local OLD_PTHREAD
	OLD_PTHREAD="$(readlink ${MROOT}/$(mlibdir)/libpthread.so.0)"

	# slackware install method

	# we cannot easily install the glibc libs,
	# because our tools for cp etc needs them to run

	local file

	echo "     Switching to new glibc ..."
	# swap libraries on the fly:
	if [ -x /sbin/ldconfig -a -d /$(mlibdir)/incoming ] && [[ -z ${MROOT} ]]
	then
		# first create copies of the incoming libraries:
		cd /$(mlibdir)/incoming
		for file in $(find /$(mlibdir)/incoming -type f)
		do
			if [ ! -r "../$(basename ${file}).incoming" ]
			then
				cp -a ${file} ../$(basename ${file}).incoming
			fi
		done

		# then switch to them all at once:
		/sbin/ldconfig -l /$(mlibdir)/*.incoming 2> /dev/null

		# finally, rename them and clean up:
		cd /$(mlibdir)
		for file in *.incoming
		do
			rm -f $(basename ${file} .incoming)
			cp -a ${file} $(basename ${file} .incoming)
			/sbin/ldconfig -l $(basename ${file} .incoming)
			rm -f ${file}
		done

	# no ldconfig?
	# good, it's safe to just jam it on home (and make links below):
	else
		(
			cd ${MROOT}/$(mlibdir)/incoming
			for file in *
			do
				cp -a ${file} ..
			done

			local my_sym
			local my_dest

			# rebuild symlinks
			echo "     Recreating Symlinks:"
			for i in $(find ${MROOT}/$(mlibdir)/incoming -type l)
			do
				my_sym="$(readlink ${i})"
				my_dest="$(basename ${i})"

				echo "       ${my_dest} -> ${my_dest}"

				# assure to remove the old ones;
				[ -L ${MROOT}/$(mlibdir)/"${my_dest}" ] && \
					rm ${MROOT}/$(mlibdir)/"${my_dest}"

				ln -snf "${my_sym}" ${MROOT}/$(mlibdir)/"${my_dest}"
			done
		)
	fi

	# now, get rid of the temporary directory:
	rm -rf ${MROOT}/$(mlibdir)/incoming

	# remove stale nptl libpthread-2.?.?.so,
	# fix only needed for glibc with linuxthreads;
	# prevent reloc errors such as:
	#    ls: error while loading shared libraries: libpthread.so.0: cannot open shared object file: No such file or directory

	# get our new libpthread.so.0
	local NEW_PTHREAD
	NEW_PTHREAD="$(readlink ${MROOT}/$(mlibdir)/libpthread.so.0)"

	if [ "${NEW_PTHREAD}" != "${OLD_PTHREAD}" ]
	then
		echo "     Removing stale libpthread libraries ..."
		for file in ${MROOT}/$(mlibdir)/libpthread-*
		do
			if [ "$(basename ${file})" != "${NEW_PTHREAD}" ]
			then
				rm -f ${file}
			fi
		done

		#rm -f /lib/${OLD_PTHREAD}

		ln -snf ${NEW_PTHREAD} ${MROOT}/$(mlibdir)/libpthread.so.0
	fi

	if [ -x /usr/sbin/iconvconfig ]
	then
		# generate fastloading iconv module configuration file.
		echo "     Generate iconv module config ..."
		/usr/sbin/iconvconfig --prefix=${MROOT}/
	fi

	# reloading init
	echo "     Reloading init ..."
	[[ -z ${MROOT} ]] && /sbin/init U &> /dev/null

	# generating user def locales
	echo "     Generating user defined locales ..."
	[[ -z ${MROOT} ]] && /usr/sbin/locale-gen

	# now we must fix the mage db files
	# to stop the annoying errors messages
	fix_db_files
}